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9542cb1f | 1 | /* Coding system handler (conversion, detection, etc). |
aaef169d | 2 | Copyright (C) 2001, 2002, 2003, 2004, 2005, |
76b6f707 | 3 | 2006, 2007, 2008, 2009 Free Software Foundation, Inc. |
7976eda0 | 4 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
76b6f707 | 5 | 2005, 2006, 2007, 2008, 2009 |
ce03bf76 KH |
6 | National Institute of Advanced Industrial Science and Technology (AIST) |
7 | Registration Number H14PRO021 | |
8f924df7 | 8 | Copyright (C) 2003 |
df7492f9 KH |
9 | National Institute of Advanced Industrial Science and Technology (AIST) |
10 | Registration Number H13PRO009 | |
4ed46869 | 11 | |
369314dc KH |
12 | This file is part of GNU Emacs. |
13 | ||
9ec0b715 | 14 | GNU Emacs is free software: you can redistribute it and/or modify |
369314dc | 15 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
16 | the Free Software Foundation, either version 3 of the License, or |
17 | (at your option) any later version. | |
4ed46869 | 18 | |
369314dc KH |
19 | GNU Emacs is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
4ed46869 | 23 | |
369314dc | 24 | You should have received a copy of the GNU General Public License |
9ec0b715 | 25 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
4ed46869 KH |
26 | |
27 | /*** TABLE OF CONTENTS *** | |
28 | ||
b73bfc1c | 29 | 0. General comments |
4ed46869 | 30 | 1. Preamble |
df7492f9 KH |
31 | 2. Emacs' internal format (emacs-utf-8) handlers |
32 | 3. UTF-8 handlers | |
33 | 4. UTF-16 handlers | |
34 | 5. Charset-base coding systems handlers | |
35 | 6. emacs-mule (old Emacs' internal format) handlers | |
36 | 7. ISO2022 handlers | |
37 | 8. Shift-JIS and BIG5 handlers | |
38 | 9. CCL handlers | |
39 | 10. C library functions | |
40 | 11. Emacs Lisp library functions | |
41 | 12. Postamble | |
4ed46869 KH |
42 | |
43 | */ | |
44 | ||
df7492f9 | 45 | /*** 0. General comments *** |
b73bfc1c KH |
46 | |
47 | ||
df7492f9 | 48 | CODING SYSTEM |
4ed46869 | 49 | |
5bad0796 DL |
50 | A coding system is an object for an encoding mechanism that contains |
51 | information about how to convert byte sequences to character | |
e19c3639 KH |
52 | sequences and vice versa. When we say "decode", it means converting |
53 | a byte sequence of a specific coding system into a character | |
54 | sequence that is represented by Emacs' internal coding system | |
55 | `emacs-utf-8', and when we say "encode", it means converting a | |
56 | character sequence of emacs-utf-8 to a byte sequence of a specific | |
0ef69138 | 57 | coding system. |
4ed46869 | 58 | |
e19c3639 KH |
59 | In Emacs Lisp, a coding system is represented by a Lisp symbol. In |
60 | C level, a coding system is represented by a vector of attributes | |
5bad0796 | 61 | stored in the hash table Vcharset_hash_table. The conversion from |
e19c3639 KH |
62 | coding system symbol to attributes vector is done by looking up |
63 | Vcharset_hash_table by the symbol. | |
4ed46869 | 64 | |
e19c3639 | 65 | Coding systems are classified into the following types depending on |
5bad0796 | 66 | the encoding mechanism. Here's a brief description of the types. |
4ed46869 | 67 | |
df7492f9 KH |
68 | o UTF-8 |
69 | ||
70 | o UTF-16 | |
71 | ||
72 | o Charset-base coding system | |
73 | ||
74 | A coding system defined by one or more (coded) character sets. | |
5bad0796 | 75 | Decoding and encoding are done by a code converter defined for each |
df7492f9 KH |
76 | character set. |
77 | ||
5bad0796 | 78 | o Old Emacs internal format (emacs-mule) |
df7492f9 | 79 | |
5bad0796 | 80 | The coding system adopted by old versions of Emacs (20 and 21). |
4ed46869 | 81 | |
df7492f9 | 82 | o ISO2022-base coding system |
4ed46869 KH |
83 | |
84 | The most famous coding system for multiple character sets. X's | |
df7492f9 KH |
85 | Compound Text, various EUCs (Extended Unix Code), and coding systems |
86 | used in the Internet communication such as ISO-2022-JP are all | |
87 | variants of ISO2022. | |
4ed46869 | 88 | |
df7492f9 | 89 | o SJIS (or Shift-JIS or MS-Kanji-Code) |
93dec019 | 90 | |
4ed46869 KH |
91 | A coding system to encode character sets: ASCII, JISX0201, and |
92 | JISX0208. Widely used for PC's in Japan. Details are described in | |
df7492f9 | 93 | section 8. |
4ed46869 | 94 | |
df7492f9 | 95 | o BIG5 |
4ed46869 | 96 | |
df7492f9 | 97 | A coding system to encode character sets: ASCII and Big5. Widely |
cfb43547 | 98 | used for Chinese (mainly in Taiwan and Hong Kong). Details are |
df7492f9 KH |
99 | described in section 8. In this file, when we write "big5" (all |
100 | lowercase), we mean the coding system, and when we write "Big5" | |
101 | (capitalized), we mean the character set. | |
4ed46869 | 102 | |
df7492f9 | 103 | o CCL |
27901516 | 104 | |
5bad0796 | 105 | If a user wants to decode/encode text encoded in a coding system |
df7492f9 KH |
106 | not listed above, he can supply a decoder and an encoder for it in |
107 | CCL (Code Conversion Language) programs. Emacs executes the CCL | |
108 | program while decoding/encoding. | |
27901516 | 109 | |
df7492f9 | 110 | o Raw-text |
4ed46869 | 111 | |
5a936b46 | 112 | A coding system for text containing raw eight-bit data. Emacs |
5bad0796 | 113 | treats each byte of source text as a character (except for |
df7492f9 | 114 | end-of-line conversion). |
4ed46869 | 115 | |
df7492f9 KH |
116 | o No-conversion |
117 | ||
118 | Like raw text, but don't do end-of-line conversion. | |
4ed46869 | 119 | |
4ed46869 | 120 | |
df7492f9 | 121 | END-OF-LINE FORMAT |
4ed46869 | 122 | |
5bad0796 | 123 | How text end-of-line is encoded depends on operating system. For |
df7492f9 | 124 | instance, Unix's format is just one byte of LF (line-feed) code, |
f4dee582 | 125 | whereas DOS's format is two-byte sequence of `carriage-return' and |
d46c5b12 KH |
126 | `line-feed' codes. MacOS's format is usually one byte of |
127 | `carriage-return'. | |
4ed46869 | 128 | |
cfb43547 | 129 | Since text character encoding and end-of-line encoding are |
df7492f9 KH |
130 | independent, any coding system described above can take any format |
131 | of end-of-line (except for no-conversion). | |
4ed46869 | 132 | |
e19c3639 KH |
133 | STRUCT CODING_SYSTEM |
134 | ||
135 | Before using a coding system for code conversion (i.e. decoding and | |
136 | encoding), we setup a structure of type `struct coding_system'. | |
137 | This structure keeps various information about a specific code | |
5bad0796 | 138 | conversion (e.g. the location of source and destination data). |
4ed46869 KH |
139 | |
140 | */ | |
141 | ||
df7492f9 KH |
142 | /* COMMON MACROS */ |
143 | ||
144 | ||
4ed46869 KH |
145 | /*** GENERAL NOTES on `detect_coding_XXX ()' functions *** |
146 | ||
df7492f9 | 147 | These functions check if a byte sequence specified as a source in |
ff0dacd7 KH |
148 | CODING conforms to the format of XXX, and update the members of |
149 | DETECT_INFO. | |
df7492f9 | 150 | |
ff0dacd7 | 151 | Return 1 if the byte sequence conforms to XXX, otherwise return 0. |
df7492f9 KH |
152 | |
153 | Below is the template of these functions. */ | |
154 | ||
4ed46869 | 155 | #if 0 |
df7492f9 | 156 | static int |
ff0dacd7 | 157 | detect_coding_XXX (coding, detect_info) |
df7492f9 | 158 | struct coding_system *coding; |
ff0dacd7 | 159 | struct coding_detection_info *detect_info; |
4ed46869 | 160 | { |
f1d34bca MB |
161 | const unsigned char *src = coding->source; |
162 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
df7492f9 | 163 | int multibytep = coding->src_multibyte; |
ff0dacd7 | 164 | int consumed_chars = 0; |
df7492f9 KH |
165 | int found = 0; |
166 | ...; | |
167 | ||
168 | while (1) | |
169 | { | |
170 | /* Get one byte from the source. If the souce is exausted, jump | |
171 | to no_more_source:. */ | |
172 | ONE_MORE_BYTE (c); | |
ff0dacd7 KH |
173 | |
174 | if (! __C_conforms_to_XXX___ (c)) | |
175 | break; | |
176 | if (! __C_strongly_suggests_XXX__ (c)) | |
177 | found = CATEGORY_MASK_XXX; | |
df7492f9 | 178 | } |
ff0dacd7 KH |
179 | /* The byte sequence is invalid for XXX. */ |
180 | detect_info->rejected |= CATEGORY_MASK_XXX; | |
df7492f9 | 181 | return 0; |
ff0dacd7 | 182 | |
df7492f9 | 183 | no_more_source: |
ff0dacd7 KH |
184 | /* The source exausted successfully. */ |
185 | detect_info->found |= found; | |
df7492f9 | 186 | return 1; |
4ed46869 KH |
187 | } |
188 | #endif | |
189 | ||
190 | /*** GENERAL NOTES on `decode_coding_XXX ()' functions *** | |
191 | ||
df7492f9 KH |
192 | These functions decode a byte sequence specified as a source by |
193 | CODING. The resulting multibyte text goes to a place pointed to by | |
194 | CODING->charbuf, the length of which should not exceed | |
195 | CODING->charbuf_size; | |
d46c5b12 | 196 | |
df7492f9 KH |
197 | These functions set the information of original and decoded texts in |
198 | CODING->consumed, CODING->consumed_char, and CODING->charbuf_used. | |
199 | They also set CODING->result to one of CODING_RESULT_XXX indicating | |
200 | how the decoding is finished. | |
d46c5b12 | 201 | |
df7492f9 | 202 | Below is the template of these functions. */ |
d46c5b12 | 203 | |
4ed46869 | 204 | #if 0 |
b73bfc1c | 205 | static void |
df7492f9 | 206 | decode_coding_XXXX (coding) |
4ed46869 | 207 | struct coding_system *coding; |
4ed46869 | 208 | { |
f1d34bca MB |
209 | const unsigned char *src = coding->source + coding->consumed; |
210 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
df7492f9 KH |
211 | /* SRC_BASE remembers the start position in source in each loop. |
212 | The loop will be exited when there's not enough source code, or | |
213 | when there's no room in CHARBUF for a decoded character. */ | |
f1d34bca | 214 | const unsigned char *src_base; |
df7492f9 | 215 | /* A buffer to produce decoded characters. */ |
69a80ea3 KH |
216 | int *charbuf = coding->charbuf + coding->charbuf_used; |
217 | int *charbuf_end = coding->charbuf + coding->charbuf_size; | |
df7492f9 KH |
218 | int multibytep = coding->src_multibyte; |
219 | ||
220 | while (1) | |
221 | { | |
222 | src_base = src; | |
223 | if (charbuf < charbuf_end) | |
224 | /* No more room to produce a decoded character. */ | |
225 | break; | |
226 | ONE_MORE_BYTE (c); | |
227 | /* Decode it. */ | |
228 | } | |
229 | ||
230 | no_more_source: | |
231 | if (src_base < src_end | |
232 | && coding->mode & CODING_MODE_LAST_BLOCK) | |
233 | /* If the source ends by partial bytes to construct a character, | |
234 | treat them as eight-bit raw data. */ | |
235 | while (src_base < src_end && charbuf < charbuf_end) | |
236 | *charbuf++ = *src_base++; | |
237 | /* Remember how many bytes and characters we consumed. If the | |
238 | source is multibyte, the bytes and chars are not identical. */ | |
239 | coding->consumed = coding->consumed_char = src_base - coding->source; | |
240 | /* Remember how many characters we produced. */ | |
241 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
242 | } |
243 | #endif | |
244 | ||
245 | /*** GENERAL NOTES on `encode_coding_XXX ()' functions *** | |
246 | ||
df7492f9 KH |
247 | These functions encode SRC_BYTES length text at SOURCE of Emacs' |
248 | internal multibyte format by CODING. The resulting byte sequence | |
b73bfc1c KH |
249 | goes to a place pointed to by DESTINATION, the length of which |
250 | should not exceed DST_BYTES. | |
d46c5b12 | 251 | |
df7492f9 KH |
252 | These functions set the information of original and encoded texts in |
253 | the members produced, produced_char, consumed, and consumed_char of | |
254 | the structure *CODING. They also set the member result to one of | |
255 | CODING_RESULT_XXX indicating how the encoding finished. | |
d46c5b12 | 256 | |
df7492f9 KH |
257 | DST_BYTES zero means that source area and destination area are |
258 | overlapped, which means that we can produce a encoded text until it | |
259 | reaches at the head of not-yet-encoded source text. | |
d46c5b12 | 260 | |
df7492f9 | 261 | Below is a template of these functions. */ |
4ed46869 | 262 | #if 0 |
b73bfc1c | 263 | static void |
df7492f9 | 264 | encode_coding_XXX (coding) |
4ed46869 | 265 | struct coding_system *coding; |
4ed46869 | 266 | { |
df7492f9 KH |
267 | int multibytep = coding->dst_multibyte; |
268 | int *charbuf = coding->charbuf; | |
269 | int *charbuf_end = charbuf->charbuf + coding->charbuf_used; | |
270 | unsigned char *dst = coding->destination + coding->produced; | |
271 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
272 | unsigned char *adjusted_dst_end = dst_end - _MAX_BYTES_PRODUCED_IN_LOOP_; | |
273 | int produced_chars = 0; | |
274 | ||
275 | for (; charbuf < charbuf_end && dst < adjusted_dst_end; charbuf++) | |
276 | { | |
277 | int c = *charbuf; | |
278 | /* Encode C into DST, and increment DST. */ | |
279 | } | |
280 | label_no_more_destination: | |
281 | /* How many chars and bytes we produced. */ | |
282 | coding->produced_char += produced_chars; | |
283 | coding->produced = dst - coding->destination; | |
4ed46869 KH |
284 | } |
285 | #endif | |
286 | ||
4ed46869 KH |
287 | \f |
288 | /*** 1. Preamble ***/ | |
289 | ||
68c45bf0 | 290 | #include <config.h> |
4ed46869 | 291 | #include <stdio.h> |
d7306fe6 | 292 | #include <setjmp.h> |
4ed46869 | 293 | |
4ed46869 KH |
294 | #include "lisp.h" |
295 | #include "buffer.h" | |
df7492f9 | 296 | #include "character.h" |
4ed46869 KH |
297 | #include "charset.h" |
298 | #include "ccl.h" | |
df7492f9 | 299 | #include "composite.h" |
4ed46869 KH |
300 | #include "coding.h" |
301 | #include "window.h" | |
b8299c66 KL |
302 | #include "frame.h" |
303 | #include "termhooks.h" | |
4ed46869 | 304 | |
df7492f9 | 305 | Lisp_Object Vcoding_system_hash_table; |
4ed46869 | 306 | |
df7492f9 | 307 | Lisp_Object Qcoding_system, Qcoding_aliases, Qeol_type; |
1965cb73 DL |
308 | Lisp_Object Qunix, Qdos; |
309 | extern Lisp_Object Qmac; /* frame.c */ | |
4ed46869 KH |
310 | Lisp_Object Qbuffer_file_coding_system; |
311 | Lisp_Object Qpost_read_conversion, Qpre_write_conversion; | |
df7492f9 | 312 | Lisp_Object Qdefault_char; |
27901516 | 313 | Lisp_Object Qno_conversion, Qundecided; |
df7492f9 | 314 | Lisp_Object Qcharset, Qiso_2022, Qutf_8, Qutf_16, Qshift_jis, Qbig5; |
b49a1807 | 315 | Lisp_Object Qbig, Qlittle; |
bb0115a2 | 316 | Lisp_Object Qcoding_system_history; |
1397dc18 | 317 | Lisp_Object Qvalid_codes; |
2133e2d1 | 318 | Lisp_Object QCcategory, QCmnemonic, QCdefault_char; |
a6f87d34 KH |
319 | Lisp_Object QCdecode_translation_table, QCencode_translation_table; |
320 | Lisp_Object QCpost_read_conversion, QCpre_write_conversion; | |
35befdaa | 321 | Lisp_Object QCascii_compatible_p; |
4ed46869 KH |
322 | |
323 | extern Lisp_Object Qinsert_file_contents, Qwrite_region; | |
387f6ba5 | 324 | Lisp_Object Qcall_process, Qcall_process_region; |
4ed46869 KH |
325 | Lisp_Object Qstart_process, Qopen_network_stream; |
326 | Lisp_Object Qtarget_idx; | |
327 | ||
065e3595 KH |
328 | Lisp_Object Qinsufficient_source, Qinconsistent_eol, Qinvalid_source; |
329 | Lisp_Object Qinterrupted, Qinsufficient_memory; | |
330 | ||
c7183fb8 GM |
331 | extern Lisp_Object Qcompletion_ignore_case; |
332 | ||
44e8490d KH |
333 | /* If a symbol has this property, evaluate the value to define the |
334 | symbol as a coding system. */ | |
335 | static Lisp_Object Qcoding_system_define_form; | |
336 | ||
5d5bf4d8 KH |
337 | int coding_system_require_warning; |
338 | ||
d46c5b12 KH |
339 | Lisp_Object Vselect_safe_coding_system_function; |
340 | ||
7722baf9 EZ |
341 | /* Mnemonic string for each format of end-of-line. */ |
342 | Lisp_Object eol_mnemonic_unix, eol_mnemonic_dos, eol_mnemonic_mac; | |
343 | /* Mnemonic string to indicate format of end-of-line is not yet | |
4ed46869 | 344 | decided. */ |
7722baf9 | 345 | Lisp_Object eol_mnemonic_undecided; |
4ed46869 | 346 | |
fcbcfb64 KH |
347 | /* Format of end-of-line decided by system. This is Qunix on |
348 | Unix and Mac, Qdos on DOS/Windows. | |
349 | This has an effect only for external encoding (i.e. for output to | |
350 | file and process), not for in-buffer or Lisp string encoding. */ | |
351 | static Lisp_Object system_eol_type; | |
352 | ||
4ed46869 KH |
353 | #ifdef emacs |
354 | ||
4608c386 KH |
355 | Lisp_Object Vcoding_system_list, Vcoding_system_alist; |
356 | ||
357 | Lisp_Object Qcoding_system_p, Qcoding_system_error; | |
4ed46869 | 358 | |
d46c5b12 KH |
359 | /* Coding system emacs-mule and raw-text are for converting only |
360 | end-of-line format. */ | |
361 | Lisp_Object Qemacs_mule, Qraw_text; | |
8f924df7 | 362 | Lisp_Object Qutf_8_emacs; |
ecf488bc | 363 | |
4ed46869 KH |
364 | /* Coding-systems are handed between Emacs Lisp programs and C internal |
365 | routines by the following three variables. */ | |
366 | /* Coding-system for reading files and receiving data from process. */ | |
367 | Lisp_Object Vcoding_system_for_read; | |
368 | /* Coding-system for writing files and sending data to process. */ | |
369 | Lisp_Object Vcoding_system_for_write; | |
370 | /* Coding-system actually used in the latest I/O. */ | |
371 | Lisp_Object Vlast_coding_system_used; | |
065e3595 KH |
372 | /* Set to non-nil when an error is detected while code conversion. */ |
373 | Lisp_Object Vlast_code_conversion_error; | |
c4825358 | 374 | /* A vector of length 256 which contains information about special |
94487c4e | 375 | Latin codes (especially for dealing with Microsoft codes). */ |
3f003981 | 376 | Lisp_Object Vlatin_extra_code_table; |
c4825358 | 377 | |
9ce27fde KH |
378 | /* Flag to inhibit code conversion of end-of-line format. */ |
379 | int inhibit_eol_conversion; | |
380 | ||
74383408 KH |
381 | /* Flag to inhibit ISO2022 escape sequence detection. */ |
382 | int inhibit_iso_escape_detection; | |
383 | ||
97b1b294 EZ |
384 | /* Flag to inhibit detection of binary files through null bytes. */ |
385 | int inhibit_null_byte_detection; | |
386 | ||
ed29121d EZ |
387 | /* Flag to make buffer-file-coding-system inherit from process-coding. */ |
388 | int inherit_process_coding_system; | |
389 | ||
c4825358 KH |
390 | /* Coding system to be used to encode text for terminal display when |
391 | terminal coding system is nil. */ | |
392 | struct coding_system safe_terminal_coding; | |
393 | ||
02ba4723 KH |
394 | Lisp_Object Vfile_coding_system_alist; |
395 | Lisp_Object Vprocess_coding_system_alist; | |
396 | Lisp_Object Vnetwork_coding_system_alist; | |
4ed46869 | 397 | |
68c45bf0 PE |
398 | Lisp_Object Vlocale_coding_system; |
399 | ||
4ed46869 KH |
400 | #endif /* emacs */ |
401 | ||
f967223b KH |
402 | /* Flag to tell if we look up translation table on character code |
403 | conversion. */ | |
84fbb8a0 | 404 | Lisp_Object Venable_character_translation; |
f967223b KH |
405 | /* Standard translation table to look up on decoding (reading). */ |
406 | Lisp_Object Vstandard_translation_table_for_decode; | |
407 | /* Standard translation table to look up on encoding (writing). */ | |
408 | Lisp_Object Vstandard_translation_table_for_encode; | |
84fbb8a0 | 409 | |
f967223b KH |
410 | Lisp_Object Qtranslation_table; |
411 | Lisp_Object Qtranslation_table_id; | |
412 | Lisp_Object Qtranslation_table_for_decode; | |
413 | Lisp_Object Qtranslation_table_for_encode; | |
4ed46869 KH |
414 | |
415 | /* Alist of charsets vs revision number. */ | |
df7492f9 | 416 | static Lisp_Object Vcharset_revision_table; |
4ed46869 | 417 | |
02ba4723 KH |
418 | /* Default coding systems used for process I/O. */ |
419 | Lisp_Object Vdefault_process_coding_system; | |
420 | ||
002fdb44 DL |
421 | /* Char table for translating Quail and self-inserting input. */ |
422 | Lisp_Object Vtranslation_table_for_input; | |
423 | ||
df7492f9 KH |
424 | /* Two special coding systems. */ |
425 | Lisp_Object Vsjis_coding_system; | |
426 | Lisp_Object Vbig5_coding_system; | |
427 | ||
df7492f9 KH |
428 | /* ISO2022 section */ |
429 | ||
430 | #define CODING_ISO_INITIAL(coding, reg) \ | |
431 | (XINT (AREF (AREF (CODING_ID_ATTRS ((coding)->id), \ | |
432 | coding_attr_iso_initial), \ | |
433 | reg))) | |
434 | ||
435 | ||
1b3b981b AS |
436 | #define CODING_ISO_REQUEST(coding, charset_id) \ |
437 | (((charset_id) <= (coding)->max_charset_id \ | |
438 | ? ((coding)->safe_charsets[charset_id] != 255 \ | |
439 | ? (coding)->safe_charsets[charset_id] \ | |
440 | : -1) \ | |
df7492f9 KH |
441 | : -1)) |
442 | ||
443 | ||
444 | #define CODING_ISO_FLAGS(coding) \ | |
445 | ((coding)->spec.iso_2022.flags) | |
446 | #define CODING_ISO_DESIGNATION(coding, reg) \ | |
447 | ((coding)->spec.iso_2022.current_designation[reg]) | |
448 | #define CODING_ISO_INVOCATION(coding, plane) \ | |
449 | ((coding)->spec.iso_2022.current_invocation[plane]) | |
450 | #define CODING_ISO_SINGLE_SHIFTING(coding) \ | |
451 | ((coding)->spec.iso_2022.single_shifting) | |
452 | #define CODING_ISO_BOL(coding) \ | |
453 | ((coding)->spec.iso_2022.bol) | |
454 | #define CODING_ISO_INVOKED_CHARSET(coding, plane) \ | |
455 | CODING_ISO_DESIGNATION ((coding), CODING_ISO_INVOCATION ((coding), (plane))) | |
e951386e KH |
456 | #define CODING_ISO_CMP_STATUS(coding) \ |
457 | (&(coding)->spec.iso_2022.cmp_status) | |
458 | #define CODING_ISO_EXTSEGMENT_LEN(coding) \ | |
459 | ((coding)->spec.iso_2022.ctext_extended_segment_len) | |
460 | #define CODING_ISO_EMBEDDED_UTF_8(coding) \ | |
461 | ((coding)->spec.iso_2022.embedded_utf_8) | |
df7492f9 KH |
462 | |
463 | /* Control characters of ISO2022. */ | |
464 | /* code */ /* function */ | |
465 | #define ISO_CODE_LF 0x0A /* line-feed */ | |
466 | #define ISO_CODE_CR 0x0D /* carriage-return */ | |
467 | #define ISO_CODE_SO 0x0E /* shift-out */ | |
468 | #define ISO_CODE_SI 0x0F /* shift-in */ | |
469 | #define ISO_CODE_SS2_7 0x19 /* single-shift-2 for 7-bit code */ | |
470 | #define ISO_CODE_ESC 0x1B /* escape */ | |
471 | #define ISO_CODE_SS2 0x8E /* single-shift-2 */ | |
472 | #define ISO_CODE_SS3 0x8F /* single-shift-3 */ | |
473 | #define ISO_CODE_CSI 0x9B /* control-sequence-introducer */ | |
474 | ||
475 | /* All code (1-byte) of ISO2022 is classified into one of the | |
476 | followings. */ | |
477 | enum iso_code_class_type | |
478 | { | |
479 | ISO_control_0, /* Control codes in the range | |
480 | 0x00..0x1F and 0x7F, except for the | |
481 | following 5 codes. */ | |
df7492f9 KH |
482 | ISO_shift_out, /* ISO_CODE_SO (0x0E) */ |
483 | ISO_shift_in, /* ISO_CODE_SI (0x0F) */ | |
484 | ISO_single_shift_2_7, /* ISO_CODE_SS2_7 (0x19) */ | |
485 | ISO_escape, /* ISO_CODE_SO (0x1B) */ | |
486 | ISO_control_1, /* Control codes in the range | |
487 | 0x80..0x9F, except for the | |
488 | following 3 codes. */ | |
489 | ISO_single_shift_2, /* ISO_CODE_SS2 (0x8E) */ | |
490 | ISO_single_shift_3, /* ISO_CODE_SS3 (0x8F) */ | |
491 | ISO_control_sequence_introducer, /* ISO_CODE_CSI (0x9B) */ | |
492 | ISO_0x20_or_0x7F, /* Codes of the values 0x20 or 0x7F. */ | |
493 | ISO_graphic_plane_0, /* Graphic codes in the range 0x21..0x7E. */ | |
494 | ISO_0xA0_or_0xFF, /* Codes of the values 0xA0 or 0xFF. */ | |
495 | ISO_graphic_plane_1 /* Graphic codes in the range 0xA1..0xFE. */ | |
496 | }; | |
05e6f5dc | 497 | |
df7492f9 KH |
498 | /** The macros CODING_ISO_FLAG_XXX defines a flag bit of the |
499 | `iso-flags' attribute of an iso2022 coding system. */ | |
05e6f5dc | 500 | |
df7492f9 KH |
501 | /* If set, produce long-form designation sequence (e.g. ESC $ ( A) |
502 | instead of the correct short-form sequence (e.g. ESC $ A). */ | |
503 | #define CODING_ISO_FLAG_LONG_FORM 0x0001 | |
93dec019 | 504 | |
df7492f9 KH |
505 | /* If set, reset graphic planes and registers at end-of-line to the |
506 | initial state. */ | |
507 | #define CODING_ISO_FLAG_RESET_AT_EOL 0x0002 | |
05e6f5dc | 508 | |
df7492f9 KH |
509 | /* If set, reset graphic planes and registers before any control |
510 | characters to the initial state. */ | |
511 | #define CODING_ISO_FLAG_RESET_AT_CNTL 0x0004 | |
05e6f5dc | 512 | |
df7492f9 KH |
513 | /* If set, encode by 7-bit environment. */ |
514 | #define CODING_ISO_FLAG_SEVEN_BITS 0x0008 | |
4ed46869 | 515 | |
df7492f9 KH |
516 | /* If set, use locking-shift function. */ |
517 | #define CODING_ISO_FLAG_LOCKING_SHIFT 0x0010 | |
b73bfc1c | 518 | |
df7492f9 KH |
519 | /* If set, use single-shift function. Overwrite |
520 | CODING_ISO_FLAG_LOCKING_SHIFT. */ | |
521 | #define CODING_ISO_FLAG_SINGLE_SHIFT 0x0020 | |
b73bfc1c | 522 | |
df7492f9 KH |
523 | /* If set, use designation escape sequence. */ |
524 | #define CODING_ISO_FLAG_DESIGNATION 0x0040 | |
b73bfc1c | 525 | |
df7492f9 KH |
526 | /* If set, produce revision number sequence. */ |
527 | #define CODING_ISO_FLAG_REVISION 0x0080 | |
b73bfc1c | 528 | |
df7492f9 KH |
529 | /* If set, produce ISO6429's direction specifying sequence. */ |
530 | #define CODING_ISO_FLAG_DIRECTION 0x0100 | |
f4dee582 | 531 | |
df7492f9 KH |
532 | /* If set, assume designation states are reset at beginning of line on |
533 | output. */ | |
534 | #define CODING_ISO_FLAG_INIT_AT_BOL 0x0200 | |
4ed46869 | 535 | |
df7492f9 KH |
536 | /* If set, designation sequence should be placed at beginning of line |
537 | on output. */ | |
538 | #define CODING_ISO_FLAG_DESIGNATE_AT_BOL 0x0400 | |
aa72b389 | 539 | |
df7492f9 KH |
540 | /* If set, do not encode unsafe charactes on output. */ |
541 | #define CODING_ISO_FLAG_SAFE 0x0800 | |
aa72b389 | 542 | |
df7492f9 KH |
543 | /* If set, extra latin codes (128..159) are accepted as a valid code |
544 | on input. */ | |
545 | #define CODING_ISO_FLAG_LATIN_EXTRA 0x1000 | |
aa72b389 | 546 | |
df7492f9 | 547 | #define CODING_ISO_FLAG_COMPOSITION 0x2000 |
aa72b389 | 548 | |
df7492f9 | 549 | #define CODING_ISO_FLAG_EUC_TW_SHIFT 0x4000 |
aa72b389 | 550 | |
bf16eb23 | 551 | #define CODING_ISO_FLAG_USE_ROMAN 0x8000 |
aa72b389 | 552 | |
bf16eb23 | 553 | #define CODING_ISO_FLAG_USE_OLDJIS 0x10000 |
aa72b389 | 554 | |
bf16eb23 | 555 | #define CODING_ISO_FLAG_FULL_SUPPORT 0x100000 |
aa72b389 | 556 | |
df7492f9 KH |
557 | /* A character to be produced on output if encoding of the original |
558 | character is prohibited by CODING_ISO_FLAG_SAFE. */ | |
559 | #define CODING_INHIBIT_CHARACTER_SUBSTITUTION '?' | |
aa72b389 | 560 | |
a470d443 KH |
561 | /* UTF-8 section */ |
562 | #define CODING_UTF_8_BOM(coding) \ | |
563 | ((coding)->spec.utf_8_bom) | |
4ed46869 | 564 | |
df7492f9 KH |
565 | /* UTF-16 section */ |
566 | #define CODING_UTF_16_BOM(coding) \ | |
567 | ((coding)->spec.utf_16.bom) | |
4ed46869 | 568 | |
df7492f9 KH |
569 | #define CODING_UTF_16_ENDIAN(coding) \ |
570 | ((coding)->spec.utf_16.endian) | |
4ed46869 | 571 | |
df7492f9 KH |
572 | #define CODING_UTF_16_SURROGATE(coding) \ |
573 | ((coding)->spec.utf_16.surrogate) | |
4ed46869 | 574 | |
4ed46869 | 575 | |
df7492f9 KH |
576 | /* CCL section */ |
577 | #define CODING_CCL_DECODER(coding) \ | |
578 | AREF (CODING_ID_ATTRS ((coding)->id), coding_attr_ccl_decoder) | |
579 | #define CODING_CCL_ENCODER(coding) \ | |
580 | AREF (CODING_ID_ATTRS ((coding)->id), coding_attr_ccl_encoder) | |
581 | #define CODING_CCL_VALIDS(coding) \ | |
8f924df7 | 582 | (SDATA (AREF (CODING_ID_ATTRS ((coding)->id), coding_attr_ccl_valids))) |
4ed46869 | 583 | |
5a936b46 | 584 | /* Index for each coding category in `coding_categories' */ |
4ed46869 | 585 | |
df7492f9 KH |
586 | enum coding_category |
587 | { | |
588 | coding_category_iso_7, | |
589 | coding_category_iso_7_tight, | |
590 | coding_category_iso_8_1, | |
591 | coding_category_iso_8_2, | |
592 | coding_category_iso_7_else, | |
593 | coding_category_iso_8_else, | |
a470d443 KH |
594 | coding_category_utf_8_auto, |
595 | coding_category_utf_8_nosig, | |
596 | coding_category_utf_8_sig, | |
df7492f9 KH |
597 | coding_category_utf_16_auto, |
598 | coding_category_utf_16_be, | |
599 | coding_category_utf_16_le, | |
600 | coding_category_utf_16_be_nosig, | |
601 | coding_category_utf_16_le_nosig, | |
602 | coding_category_charset, | |
603 | coding_category_sjis, | |
604 | coding_category_big5, | |
605 | coding_category_ccl, | |
606 | coding_category_emacs_mule, | |
607 | /* All above are targets of code detection. */ | |
608 | coding_category_raw_text, | |
609 | coding_category_undecided, | |
610 | coding_category_max | |
611 | }; | |
612 | ||
613 | /* Definitions of flag bits used in detect_coding_XXXX. */ | |
614 | #define CATEGORY_MASK_ISO_7 (1 << coding_category_iso_7) | |
615 | #define CATEGORY_MASK_ISO_7_TIGHT (1 << coding_category_iso_7_tight) | |
616 | #define CATEGORY_MASK_ISO_8_1 (1 << coding_category_iso_8_1) | |
617 | #define CATEGORY_MASK_ISO_8_2 (1 << coding_category_iso_8_2) | |
618 | #define CATEGORY_MASK_ISO_7_ELSE (1 << coding_category_iso_7_else) | |
619 | #define CATEGORY_MASK_ISO_8_ELSE (1 << coding_category_iso_8_else) | |
a470d443 KH |
620 | #define CATEGORY_MASK_UTF_8_AUTO (1 << coding_category_utf_8_auto) |
621 | #define CATEGORY_MASK_UTF_8_NOSIG (1 << coding_category_utf_8_nosig) | |
622 | #define CATEGORY_MASK_UTF_8_SIG (1 << coding_category_utf_8_sig) | |
b49a1807 | 623 | #define CATEGORY_MASK_UTF_16_AUTO (1 << coding_category_utf_16_auto) |
df7492f9 KH |
624 | #define CATEGORY_MASK_UTF_16_BE (1 << coding_category_utf_16_be) |
625 | #define CATEGORY_MASK_UTF_16_LE (1 << coding_category_utf_16_le) | |
626 | #define CATEGORY_MASK_UTF_16_BE_NOSIG (1 << coding_category_utf_16_be_nosig) | |
627 | #define CATEGORY_MASK_UTF_16_LE_NOSIG (1 << coding_category_utf_16_le_nosig) | |
628 | #define CATEGORY_MASK_CHARSET (1 << coding_category_charset) | |
629 | #define CATEGORY_MASK_SJIS (1 << coding_category_sjis) | |
630 | #define CATEGORY_MASK_BIG5 (1 << coding_category_big5) | |
631 | #define CATEGORY_MASK_CCL (1 << coding_category_ccl) | |
632 | #define CATEGORY_MASK_EMACS_MULE (1 << coding_category_emacs_mule) | |
ff0dacd7 | 633 | #define CATEGORY_MASK_RAW_TEXT (1 << coding_category_raw_text) |
df7492f9 KH |
634 | |
635 | /* This value is returned if detect_coding_mask () find nothing other | |
636 | than ASCII characters. */ | |
637 | #define CATEGORY_MASK_ANY \ | |
638 | (CATEGORY_MASK_ISO_7 \ | |
639 | | CATEGORY_MASK_ISO_7_TIGHT \ | |
640 | | CATEGORY_MASK_ISO_8_1 \ | |
641 | | CATEGORY_MASK_ISO_8_2 \ | |
642 | | CATEGORY_MASK_ISO_7_ELSE \ | |
643 | | CATEGORY_MASK_ISO_8_ELSE \ | |
a470d443 KH |
644 | | CATEGORY_MASK_UTF_8_AUTO \ |
645 | | CATEGORY_MASK_UTF_8_NOSIG \ | |
646 | | CATEGORY_MASK_UTF_8_SIG \ | |
2f3cbb32 | 647 | | CATEGORY_MASK_UTF_16_AUTO \ |
df7492f9 KH |
648 | | CATEGORY_MASK_UTF_16_BE \ |
649 | | CATEGORY_MASK_UTF_16_LE \ | |
650 | | CATEGORY_MASK_UTF_16_BE_NOSIG \ | |
651 | | CATEGORY_MASK_UTF_16_LE_NOSIG \ | |
652 | | CATEGORY_MASK_CHARSET \ | |
653 | | CATEGORY_MASK_SJIS \ | |
654 | | CATEGORY_MASK_BIG5 \ | |
655 | | CATEGORY_MASK_CCL \ | |
656 | | CATEGORY_MASK_EMACS_MULE) | |
657 | ||
658 | ||
659 | #define CATEGORY_MASK_ISO_7BIT \ | |
660 | (CATEGORY_MASK_ISO_7 | CATEGORY_MASK_ISO_7_TIGHT) | |
661 | ||
662 | #define CATEGORY_MASK_ISO_8BIT \ | |
663 | (CATEGORY_MASK_ISO_8_1 | CATEGORY_MASK_ISO_8_2) | |
664 | ||
665 | #define CATEGORY_MASK_ISO_ELSE \ | |
666 | (CATEGORY_MASK_ISO_7_ELSE | CATEGORY_MASK_ISO_8_ELSE) | |
667 | ||
668 | #define CATEGORY_MASK_ISO_ESCAPE \ | |
669 | (CATEGORY_MASK_ISO_7 \ | |
670 | | CATEGORY_MASK_ISO_7_TIGHT \ | |
671 | | CATEGORY_MASK_ISO_7_ELSE \ | |
672 | | CATEGORY_MASK_ISO_8_ELSE) | |
673 | ||
674 | #define CATEGORY_MASK_ISO \ | |
675 | ( CATEGORY_MASK_ISO_7BIT \ | |
676 | | CATEGORY_MASK_ISO_8BIT \ | |
677 | | CATEGORY_MASK_ISO_ELSE) | |
678 | ||
679 | #define CATEGORY_MASK_UTF_16 \ | |
2f3cbb32 KH |
680 | (CATEGORY_MASK_UTF_16_AUTO \ |
681 | | CATEGORY_MASK_UTF_16_BE \ | |
df7492f9 KH |
682 | | CATEGORY_MASK_UTF_16_LE \ |
683 | | CATEGORY_MASK_UTF_16_BE_NOSIG \ | |
684 | | CATEGORY_MASK_UTF_16_LE_NOSIG) | |
685 | ||
a470d443 KH |
686 | #define CATEGORY_MASK_UTF_8 \ |
687 | (CATEGORY_MASK_UTF_8_AUTO \ | |
688 | | CATEGORY_MASK_UTF_8_NOSIG \ | |
689 | | CATEGORY_MASK_UTF_8_SIG) | |
df7492f9 KH |
690 | |
691 | /* List of symbols `coding-category-xxx' ordered by priority. This | |
692 | variable is exposed to Emacs Lisp. */ | |
693 | static Lisp_Object Vcoding_category_list; | |
694 | ||
695 | /* Table of coding categories (Lisp symbols). This variable is for | |
696 | internal use oly. */ | |
697 | static Lisp_Object Vcoding_category_table; | |
698 | ||
699 | /* Table of coding-categories ordered by priority. */ | |
700 | static enum coding_category coding_priorities[coding_category_max]; | |
701 | ||
702 | /* Nth element is a coding context for the coding system bound to the | |
703 | Nth coding category. */ | |
704 | static struct coding_system coding_categories[coding_category_max]; | |
705 | ||
df7492f9 KH |
706 | /*** Commonly used macros and functions ***/ |
707 | ||
708 | #ifndef min | |
709 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
710 | #endif | |
711 | #ifndef max | |
712 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
713 | #endif | |
4ed46869 | 714 | |
24a73b0a KH |
715 | #define CODING_GET_INFO(coding, attrs, charset_list) \ |
716 | do { \ | |
717 | (attrs) = CODING_ID_ATTRS ((coding)->id); \ | |
718 | (charset_list) = CODING_ATTR_CHARSET_LIST (attrs); \ | |
df7492f9 | 719 | } while (0) |
4ed46869 | 720 | |
4ed46869 | 721 | |
df7492f9 KH |
722 | /* Safely get one byte from the source text pointed by SRC which ends |
723 | at SRC_END, and set C to that byte. If there are not enough bytes | |
065e3595 KH |
724 | in the source, it jumps to `no_more_source'. If multibytep is |
725 | nonzero, and a multibyte character is found at SRC, set C to the | |
726 | negative value of the character code. The caller should declare | |
727 | and set these variables appropriately in advance: | |
728 | src, src_end, multibytep */ | |
aa72b389 | 729 | |
065e3595 KH |
730 | #define ONE_MORE_BYTE(c) \ |
731 | do { \ | |
732 | if (src == src_end) \ | |
733 | { \ | |
734 | if (src_base < src) \ | |
735 | record_conversion_result \ | |
736 | (coding, CODING_RESULT_INSUFFICIENT_SRC); \ | |
737 | goto no_more_source; \ | |
738 | } \ | |
739 | c = *src++; \ | |
740 | if (multibytep && (c & 0x80)) \ | |
741 | { \ | |
742 | if ((c & 0xFE) == 0xC0) \ | |
743 | c = ((c & 1) << 6) | *src++; \ | |
744 | else \ | |
745 | { \ | |
35befdaa KH |
746 | src--; \ |
747 | c = - string_char (src, &src, NULL); \ | |
065e3595 KH |
748 | record_conversion_result \ |
749 | (coding, CODING_RESULT_INVALID_SRC); \ | |
750 | } \ | |
751 | } \ | |
752 | consumed_chars++; \ | |
aa72b389 KH |
753 | } while (0) |
754 | ||
f56a4450 | 755 | /* Safely get two bytes from the source text pointed by SRC which ends |
220eeac9 KH |
756 | at SRC_END, and set C1 and C2 to those bytes while skipping the |
757 | heading multibyte characters. If there are not enough bytes in the | |
758 | source, it jumps to `no_more_source'. If multibytep is nonzero and | |
759 | a multibyte character is found for C2, set C2 to the negative value | |
760 | of the character code. The caller should declare and set these | |
761 | variables appropriately in advance: | |
f56a4450 KH |
762 | src, src_end, multibytep |
763 | It is intended that this macro is used in detect_coding_utf_16. */ | |
764 | ||
220eeac9 KH |
765 | #define TWO_MORE_BYTES(c1, c2) \ |
766 | do { \ | |
767 | do { \ | |
768 | if (src == src_end) \ | |
769 | goto no_more_source; \ | |
770 | c1 = *src++; \ | |
771 | if (multibytep && (c1 & 0x80)) \ | |
772 | { \ | |
773 | if ((c1 & 0xFE) == 0xC0) \ | |
774 | c1 = ((c1 & 1) << 6) | *src++; \ | |
775 | else \ | |
776 | { \ | |
777 | src += BYTES_BY_CHAR_HEAD (c1) - 1; \ | |
778 | c1 = -1; \ | |
779 | } \ | |
780 | } \ | |
781 | } while (c1 < 0); \ | |
782 | if (src == src_end) \ | |
783 | goto no_more_source; \ | |
784 | c2 = *src++; \ | |
785 | if (multibytep && (c2 & 0x80)) \ | |
786 | { \ | |
787 | if ((c2 & 0xFE) == 0xC0) \ | |
788 | c2 = ((c2 & 1) << 6) | *src++; \ | |
789 | else \ | |
790 | c2 = -1; \ | |
791 | } \ | |
f56a4450 KH |
792 | } while (0) |
793 | ||
aa72b389 | 794 | |
065e3595 KH |
795 | #define ONE_MORE_BYTE_NO_CHECK(c) \ |
796 | do { \ | |
797 | c = *src++; \ | |
798 | if (multibytep && (c & 0x80)) \ | |
799 | { \ | |
800 | if ((c & 0xFE) == 0xC0) \ | |
801 | c = ((c & 1) << 6) | *src++; \ | |
802 | else \ | |
803 | { \ | |
35befdaa KH |
804 | src--; \ |
805 | c = - string_char (src, &src, NULL); \ | |
065e3595 KH |
806 | record_conversion_result \ |
807 | (coding, CODING_RESULT_INVALID_SRC); \ | |
808 | } \ | |
809 | } \ | |
810 | consumed_chars++; \ | |
aa72b389 KH |
811 | } while (0) |
812 | ||
aa72b389 | 813 | |
df7492f9 KH |
814 | /* Store a byte C in the place pointed by DST and increment DST to the |
815 | next free point, and increment PRODUCED_CHARS. The caller should | |
816 | assure that C is 0..127, and declare and set the variable `dst' | |
817 | appropriately in advance. | |
818 | */ | |
aa72b389 KH |
819 | |
820 | ||
df7492f9 KH |
821 | #define EMIT_ONE_ASCII_BYTE(c) \ |
822 | do { \ | |
823 | produced_chars++; \ | |
824 | *dst++ = (c); \ | |
b6871cc7 | 825 | } while (0) |
aa72b389 KH |
826 | |
827 | ||
df7492f9 | 828 | /* Like EMIT_ONE_ASCII_BYTE byt store two bytes; C1 and C2. */ |
aa72b389 | 829 | |
df7492f9 KH |
830 | #define EMIT_TWO_ASCII_BYTES(c1, c2) \ |
831 | do { \ | |
832 | produced_chars += 2; \ | |
833 | *dst++ = (c1), *dst++ = (c2); \ | |
834 | } while (0) | |
aa72b389 KH |
835 | |
836 | ||
df7492f9 KH |
837 | /* Store a byte C in the place pointed by DST and increment DST to the |
838 | next free point, and increment PRODUCED_CHARS. If MULTIBYTEP is | |
839 | nonzero, store in an appropriate multibyte from. The caller should | |
840 | declare and set the variables `dst' and `multibytep' appropriately | |
841 | in advance. */ | |
842 | ||
843 | #define EMIT_ONE_BYTE(c) \ | |
844 | do { \ | |
845 | produced_chars++; \ | |
846 | if (multibytep) \ | |
847 | { \ | |
848 | int ch = (c); \ | |
849 | if (ch >= 0x80) \ | |
850 | ch = BYTE8_TO_CHAR (ch); \ | |
851 | CHAR_STRING_ADVANCE (ch, dst); \ | |
852 | } \ | |
853 | else \ | |
854 | *dst++ = (c); \ | |
aa72b389 | 855 | } while (0) |
aa72b389 | 856 | |
aa72b389 | 857 | |
df7492f9 | 858 | /* Like EMIT_ONE_BYTE, but emit two bytes; C1 and C2. */ |
aa72b389 | 859 | |
e19c3639 KH |
860 | #define EMIT_TWO_BYTES(c1, c2) \ |
861 | do { \ | |
862 | produced_chars += 2; \ | |
863 | if (multibytep) \ | |
864 | { \ | |
865 | int ch; \ | |
866 | \ | |
867 | ch = (c1); \ | |
868 | if (ch >= 0x80) \ | |
869 | ch = BYTE8_TO_CHAR (ch); \ | |
870 | CHAR_STRING_ADVANCE (ch, dst); \ | |
871 | ch = (c2); \ | |
872 | if (ch >= 0x80) \ | |
873 | ch = BYTE8_TO_CHAR (ch); \ | |
874 | CHAR_STRING_ADVANCE (ch, dst); \ | |
875 | } \ | |
876 | else \ | |
877 | { \ | |
878 | *dst++ = (c1); \ | |
879 | *dst++ = (c2); \ | |
880 | } \ | |
aa72b389 KH |
881 | } while (0) |
882 | ||
883 | ||
df7492f9 KH |
884 | #define EMIT_THREE_BYTES(c1, c2, c3) \ |
885 | do { \ | |
886 | EMIT_ONE_BYTE (c1); \ | |
887 | EMIT_TWO_BYTES (c2, c3); \ | |
888 | } while (0) | |
aa72b389 | 889 | |
aa72b389 | 890 | |
df7492f9 KH |
891 | #define EMIT_FOUR_BYTES(c1, c2, c3, c4) \ |
892 | do { \ | |
893 | EMIT_TWO_BYTES (c1, c2); \ | |
894 | EMIT_TWO_BYTES (c3, c4); \ | |
895 | } while (0) | |
aa72b389 | 896 | |
aa72b389 | 897 | |
f6cbaf43 KH |
898 | /* Prototypes for static functions. */ |
899 | static void record_conversion_result P_ ((struct coding_system *coding, | |
900 | enum coding_result_code result)); | |
901 | static int detect_coding_utf_8 P_ ((struct coding_system *, | |
902 | struct coding_detection_info *info)); | |
903 | static void decode_coding_utf_8 P_ ((struct coding_system *)); | |
904 | static int encode_coding_utf_8 P_ ((struct coding_system *)); | |
905 | ||
906 | static int detect_coding_utf_16 P_ ((struct coding_system *, | |
907 | struct coding_detection_info *info)); | |
908 | static void decode_coding_utf_16 P_ ((struct coding_system *)); | |
909 | static int encode_coding_utf_16 P_ ((struct coding_system *)); | |
910 | ||
911 | static int detect_coding_iso_2022 P_ ((struct coding_system *, | |
912 | struct coding_detection_info *info)); | |
913 | static void decode_coding_iso_2022 P_ ((struct coding_system *)); | |
914 | static int encode_coding_iso_2022 P_ ((struct coding_system *)); | |
915 | ||
916 | static int detect_coding_emacs_mule P_ ((struct coding_system *, | |
917 | struct coding_detection_info *info)); | |
918 | static void decode_coding_emacs_mule P_ ((struct coding_system *)); | |
919 | static int encode_coding_emacs_mule P_ ((struct coding_system *)); | |
920 | ||
921 | static int detect_coding_sjis P_ ((struct coding_system *, | |
922 | struct coding_detection_info *info)); | |
923 | static void decode_coding_sjis P_ ((struct coding_system *)); | |
924 | static int encode_coding_sjis P_ ((struct coding_system *)); | |
925 | ||
926 | static int detect_coding_big5 P_ ((struct coding_system *, | |
927 | struct coding_detection_info *info)); | |
928 | static void decode_coding_big5 P_ ((struct coding_system *)); | |
929 | static int encode_coding_big5 P_ ((struct coding_system *)); | |
930 | ||
931 | static int detect_coding_ccl P_ ((struct coding_system *, | |
932 | struct coding_detection_info *info)); | |
933 | static void decode_coding_ccl P_ ((struct coding_system *)); | |
934 | static int encode_coding_ccl P_ ((struct coding_system *)); | |
935 | ||
936 | static void decode_coding_raw_text P_ ((struct coding_system *)); | |
937 | static int encode_coding_raw_text P_ ((struct coding_system *)); | |
938 | ||
939 | static void coding_set_source P_ ((struct coding_system *)); | |
940 | static void coding_set_destination P_ ((struct coding_system *)); | |
941 | static void coding_alloc_by_realloc P_ ((struct coding_system *, EMACS_INT)); | |
942 | static void coding_alloc_by_making_gap P_ ((struct coding_system *, | |
287c57d7 | 943 | EMACS_INT, EMACS_INT)); |
f6cbaf43 KH |
944 | static unsigned char *alloc_destination P_ ((struct coding_system *, |
945 | EMACS_INT, unsigned char *)); | |
946 | static void setup_iso_safe_charsets P_ ((Lisp_Object)); | |
947 | static unsigned char *encode_designation_at_bol P_ ((struct coding_system *, | |
948 | int *, int *, | |
949 | unsigned char *)); | |
950 | static int detect_eol P_ ((const unsigned char *, | |
951 | EMACS_INT, enum coding_category)); | |
952 | static Lisp_Object adjust_coding_eol_type P_ ((struct coding_system *, int)); | |
953 | static void decode_eol P_ ((struct coding_system *)); | |
954 | static Lisp_Object get_translation_table P_ ((Lisp_Object, int, int *)); | |
e951386e | 955 | static Lisp_Object get_translation P_ ((Lisp_Object, int *, int *)); |
f6cbaf43 | 956 | static int produce_chars P_ ((struct coding_system *, Lisp_Object, int)); |
f6cbaf43 KH |
957 | static INLINE void produce_charset P_ ((struct coding_system *, int *, |
958 | EMACS_INT)); | |
959 | static void produce_annotation P_ ((struct coding_system *, EMACS_INT)); | |
960 | static int decode_coding P_ ((struct coding_system *)); | |
961 | static INLINE int *handle_composition_annotation P_ ((EMACS_INT, EMACS_INT, | |
3ed051d4 | 962 | struct coding_system *, |
f6cbaf43 KH |
963 | int *, EMACS_INT *)); |
964 | static INLINE int *handle_charset_annotation P_ ((EMACS_INT, EMACS_INT, | |
965 | struct coding_system *, | |
966 | int *, EMACS_INT *)); | |
967 | static void consume_chars P_ ((struct coding_system *, Lisp_Object, int)); | |
968 | static int encode_coding P_ ((struct coding_system *)); | |
969 | static Lisp_Object make_conversion_work_buffer P_ ((int)); | |
970 | static Lisp_Object code_conversion_restore P_ ((Lisp_Object)); | |
971 | static INLINE int char_encodable_p P_ ((int, Lisp_Object)); | |
972 | static Lisp_Object make_subsidiaries P_ ((Lisp_Object)); | |
973 | ||
065e3595 KH |
974 | static void |
975 | record_conversion_result (struct coding_system *coding, | |
976 | enum coding_result_code result) | |
977 | { | |
978 | coding->result = result; | |
979 | switch (result) | |
980 | { | |
981 | case CODING_RESULT_INSUFFICIENT_SRC: | |
982 | Vlast_code_conversion_error = Qinsufficient_source; | |
983 | break; | |
984 | case CODING_RESULT_INCONSISTENT_EOL: | |
985 | Vlast_code_conversion_error = Qinconsistent_eol; | |
986 | break; | |
987 | case CODING_RESULT_INVALID_SRC: | |
988 | Vlast_code_conversion_error = Qinvalid_source; | |
989 | break; | |
990 | case CODING_RESULT_INTERRUPT: | |
991 | Vlast_code_conversion_error = Qinterrupted; | |
992 | break; | |
993 | case CODING_RESULT_INSUFFICIENT_MEM: | |
994 | Vlast_code_conversion_error = Qinsufficient_memory; | |
995 | break; | |
409ea3a1 AS |
996 | case CODING_RESULT_SUCCESS: |
997 | break; | |
35befdaa KH |
998 | default: |
999 | Vlast_code_conversion_error = intern ("Unknown error"); | |
065e3595 KH |
1000 | } |
1001 | } | |
1002 | ||
df7492f9 KH |
1003 | #define CODING_DECODE_CHAR(coding, src, src_base, src_end, charset, code, c) \ |
1004 | do { \ | |
1005 | charset_map_loaded = 0; \ | |
1006 | c = DECODE_CHAR (charset, code); \ | |
1007 | if (charset_map_loaded) \ | |
1008 | { \ | |
8f924df7 | 1009 | const unsigned char *orig = coding->source; \ |
df7492f9 KH |
1010 | EMACS_INT offset; \ |
1011 | \ | |
1012 | coding_set_source (coding); \ | |
1013 | offset = coding->source - orig; \ | |
1014 | src += offset; \ | |
1015 | src_base += offset; \ | |
1016 | src_end += offset; \ | |
1017 | } \ | |
aa72b389 KH |
1018 | } while (0) |
1019 | ||
1020 | ||
119852e7 KH |
1021 | /* If there are at least BYTES length of room at dst, allocate memory |
1022 | for coding->destination and update dst and dst_end. We don't have | |
1023 | to take care of coding->source which will be relocated. It is | |
1024 | handled by calling coding_set_source in encode_coding. */ | |
1025 | ||
df7492f9 KH |
1026 | #define ASSURE_DESTINATION(bytes) \ |
1027 | do { \ | |
1028 | if (dst + (bytes) >= dst_end) \ | |
1029 | { \ | |
1030 | int more_bytes = charbuf_end - charbuf + (bytes); \ | |
1031 | \ | |
1032 | dst = alloc_destination (coding, more_bytes, dst); \ | |
1033 | dst_end = coding->destination + coding->dst_bytes; \ | |
1034 | } \ | |
1035 | } while (0) | |
aa72b389 | 1036 | |
aa72b389 | 1037 | |
db274c7a KH |
1038 | /* Store multibyte form of the character C in P, and advance P to the |
1039 | end of the multibyte form. This is like CHAR_STRING_ADVANCE but it | |
1040 | never calls MAYBE_UNIFY_CHAR. */ | |
1041 | ||
1042 | #define CHAR_STRING_ADVANCE_NO_UNIFY(c, p) \ | |
1043 | do { \ | |
1044 | if ((c) <= MAX_1_BYTE_CHAR) \ | |
1045 | *(p)++ = (c); \ | |
1046 | else if ((c) <= MAX_2_BYTE_CHAR) \ | |
1047 | *(p)++ = (0xC0 | ((c) >> 6)), \ | |
1048 | *(p)++ = (0x80 | ((c) & 0x3F)); \ | |
1049 | else if ((c) <= MAX_3_BYTE_CHAR) \ | |
1050 | *(p)++ = (0xE0 | ((c) >> 12)), \ | |
1051 | *(p)++ = (0x80 | (((c) >> 6) & 0x3F)), \ | |
1052 | *(p)++ = (0x80 | ((c) & 0x3F)); \ | |
1053 | else if ((c) <= MAX_4_BYTE_CHAR) \ | |
1054 | *(p)++ = (0xF0 | (c >> 18)), \ | |
1055 | *(p)++ = (0x80 | ((c >> 12) & 0x3F)), \ | |
1056 | *(p)++ = (0x80 | ((c >> 6) & 0x3F)), \ | |
1057 | *(p)++ = (0x80 | (c & 0x3F)); \ | |
1058 | else if ((c) <= MAX_5_BYTE_CHAR) \ | |
1059 | *(p)++ = 0xF8, \ | |
1060 | *(p)++ = (0x80 | ((c >> 18) & 0x0F)), \ | |
1061 | *(p)++ = (0x80 | ((c >> 12) & 0x3F)), \ | |
1062 | *(p)++ = (0x80 | ((c >> 6) & 0x3F)), \ | |
1063 | *(p)++ = (0x80 | (c & 0x3F)); \ | |
1064 | else \ | |
1065 | (p) += BYTE8_STRING ((c) - 0x3FFF80, p); \ | |
1066 | } while (0) | |
1067 | ||
1068 | ||
1069 | /* Return the character code of character whose multibyte form is at | |
1070 | P, and advance P to the end of the multibyte form. This is like | |
1071 | STRING_CHAR_ADVANCE, but it never calls MAYBE_UNIFY_CHAR. */ | |
1072 | ||
1073 | #define STRING_CHAR_ADVANCE_NO_UNIFY(p) \ | |
1074 | (!((p)[0] & 0x80) \ | |
1075 | ? *(p)++ \ | |
1076 | : ! ((p)[0] & 0x20) \ | |
1077 | ? ((p) += 2, \ | |
1078 | ((((p)[-2] & 0x1F) << 6) \ | |
1079 | | ((p)[-1] & 0x3F) \ | |
1080 | | ((unsigned char) ((p)[-2]) < 0xC2 ? 0x3FFF80 : 0))) \ | |
1081 | : ! ((p)[0] & 0x10) \ | |
1082 | ? ((p) += 3, \ | |
1083 | ((((p)[-3] & 0x0F) << 12) \ | |
1084 | | (((p)[-2] & 0x3F) << 6) \ | |
1085 | | ((p)[-1] & 0x3F))) \ | |
1086 | : ! ((p)[0] & 0x08) \ | |
1087 | ? ((p) += 4, \ | |
1088 | ((((p)[-4] & 0xF) << 18) \ | |
1089 | | (((p)[-3] & 0x3F) << 12) \ | |
1090 | | (((p)[-2] & 0x3F) << 6) \ | |
1091 | | ((p)[-1] & 0x3F))) \ | |
1092 | : ((p) += 5, \ | |
1093 | ((((p)[-4] & 0x3F) << 18) \ | |
1094 | | (((p)[-3] & 0x3F) << 12) \ | |
1095 | | (((p)[-2] & 0x3F) << 6) \ | |
1096 | | ((p)[-1] & 0x3F)))) | |
1097 | ||
aa72b389 | 1098 | |
df7492f9 KH |
1099 | static void |
1100 | coding_set_source (coding) | |
aa72b389 | 1101 | struct coding_system *coding; |
aa72b389 | 1102 | { |
df7492f9 KH |
1103 | if (BUFFERP (coding->src_object)) |
1104 | { | |
2cb26057 | 1105 | struct buffer *buf = XBUFFER (coding->src_object); |
aa72b389 | 1106 | |
df7492f9 | 1107 | if (coding->src_pos < 0) |
2cb26057 | 1108 | coding->source = BUF_GAP_END_ADDR (buf) + coding->src_pos_byte; |
df7492f9 | 1109 | else |
2cb26057 | 1110 | coding->source = BUF_BYTE_ADDRESS (buf, coding->src_pos_byte); |
aa72b389 | 1111 | } |
df7492f9 | 1112 | else if (STRINGP (coding->src_object)) |
aa72b389 | 1113 | { |
8f924df7 | 1114 | coding->source = SDATA (coding->src_object) + coding->src_pos_byte; |
aa72b389 | 1115 | } |
df7492f9 KH |
1116 | else |
1117 | /* Otherwise, the source is C string and is never relocated | |
1118 | automatically. Thus we don't have to update anything. */ | |
1119 | ; | |
1120 | } | |
aa72b389 | 1121 | |
df7492f9 KH |
1122 | static void |
1123 | coding_set_destination (coding) | |
1124 | struct coding_system *coding; | |
1125 | { | |
1126 | if (BUFFERP (coding->dst_object)) | |
aa72b389 | 1127 | { |
df7492f9 | 1128 | if (coding->src_pos < 0) |
aa72b389 | 1129 | { |
13818c30 | 1130 | coding->destination = BEG_ADDR + coding->dst_pos_byte - BEG_BYTE; |
28f67a95 KH |
1131 | coding->dst_bytes = (GAP_END_ADDR |
1132 | - (coding->src_bytes - coding->consumed) | |
1133 | - coding->destination); | |
aa72b389 | 1134 | } |
df7492f9 | 1135 | else |
28f67a95 KH |
1136 | { |
1137 | /* We are sure that coding->dst_pos_byte is before the gap | |
1138 | of the buffer. */ | |
1139 | coding->destination = (BUF_BEG_ADDR (XBUFFER (coding->dst_object)) | |
13818c30 | 1140 | + coding->dst_pos_byte - BEG_BYTE); |
28f67a95 KH |
1141 | coding->dst_bytes = (BUF_GAP_END_ADDR (XBUFFER (coding->dst_object)) |
1142 | - coding->destination); | |
1143 | } | |
df7492f9 KH |
1144 | } |
1145 | else | |
1146 | /* Otherwise, the destination is C string and is never relocated | |
1147 | automatically. Thus we don't have to update anything. */ | |
1148 | ; | |
1149 | } | |
1150 | ||
1151 | ||
1152 | static void | |
1153 | coding_alloc_by_realloc (coding, bytes) | |
1154 | struct coding_system *coding; | |
1155 | EMACS_INT bytes; | |
1156 | { | |
1157 | coding->destination = (unsigned char *) xrealloc (coding->destination, | |
1158 | coding->dst_bytes + bytes); | |
1159 | coding->dst_bytes += bytes; | |
1160 | } | |
1161 | ||
1162 | static void | |
db274c7a | 1163 | coding_alloc_by_making_gap (coding, gap_head_used, bytes) |
df7492f9 | 1164 | struct coding_system *coding; |
db274c7a | 1165 | EMACS_INT gap_head_used, bytes; |
df7492f9 | 1166 | { |
db274c7a | 1167 | if (EQ (coding->src_object, coding->dst_object)) |
df7492f9 | 1168 | { |
db274c7a KH |
1169 | /* The gap may contain the produced data at the head and not-yet |
1170 | consumed data at the tail. To preserve those data, we at | |
1171 | first make the gap size to zero, then increase the gap | |
1172 | size. */ | |
1173 | EMACS_INT add = GAP_SIZE; | |
1174 | ||
1175 | GPT += gap_head_used, GPT_BYTE += gap_head_used; | |
1176 | GAP_SIZE = 0; ZV += add; Z += add; ZV_BYTE += add; Z_BYTE += add; | |
df7492f9 KH |
1177 | make_gap (bytes); |
1178 | GAP_SIZE += add; ZV -= add; Z -= add; ZV_BYTE -= add; Z_BYTE -= add; | |
db274c7a | 1179 | GPT -= gap_head_used, GPT_BYTE -= gap_head_used; |
df7492f9 | 1180 | } |
730fff51 | 1181 | else |
df7492f9 | 1182 | { |
2c78b7e1 KH |
1183 | Lisp_Object this_buffer; |
1184 | ||
1185 | this_buffer = Fcurrent_buffer (); | |
df7492f9 KH |
1186 | set_buffer_internal (XBUFFER (coding->dst_object)); |
1187 | make_gap (bytes); | |
1188 | set_buffer_internal (XBUFFER (this_buffer)); | |
aa72b389 | 1189 | } |
df7492f9 | 1190 | } |
8f924df7 | 1191 | |
df7492f9 KH |
1192 | |
1193 | static unsigned char * | |
1194 | alloc_destination (coding, nbytes, dst) | |
1195 | struct coding_system *coding; | |
3e139625 | 1196 | EMACS_INT nbytes; |
df7492f9 KH |
1197 | unsigned char *dst; |
1198 | { | |
1199 | EMACS_INT offset = dst - coding->destination; | |
1200 | ||
1201 | if (BUFFERP (coding->dst_object)) | |
db274c7a KH |
1202 | { |
1203 | struct buffer *buf = XBUFFER (coding->dst_object); | |
1204 | ||
1205 | coding_alloc_by_making_gap (coding, dst - BUF_GPT_ADDR (buf), nbytes); | |
1206 | } | |
aa72b389 | 1207 | else |
df7492f9 | 1208 | coding_alloc_by_realloc (coding, nbytes); |
df7492f9 KH |
1209 | coding_set_destination (coding); |
1210 | dst = coding->destination + offset; | |
1211 | return dst; | |
1212 | } | |
aa72b389 | 1213 | |
ff0dacd7 KH |
1214 | /** Macros for annotations. */ |
1215 | ||
ff0dacd7 KH |
1216 | /* An annotation data is stored in the array coding->charbuf in this |
1217 | format: | |
69a80ea3 | 1218 | [ -LENGTH ANNOTATION_MASK NCHARS ... ] |
ff0dacd7 KH |
1219 | LENGTH is the number of elements in the annotation. |
1220 | ANNOTATION_MASK is one of CODING_ANNOTATE_XXX_MASK. | |
69a80ea3 | 1221 | NCHARS is the number of characters in the text annotated. |
ff0dacd7 KH |
1222 | |
1223 | The format of the following elements depend on ANNOTATION_MASK. | |
1224 | ||
1225 | In the case of CODING_ANNOTATE_COMPOSITION_MASK, these elements | |
1226 | follows: | |
e951386e KH |
1227 | ... NBYTES METHOD [ COMPOSITION-COMPONENTS ... ] |
1228 | ||
1229 | NBYTES is the number of bytes specified in the header part of | |
1230 | old-style emacs-mule encoding, or 0 for the other kind of | |
1231 | composition. | |
1232 | ||
ff0dacd7 | 1233 | METHOD is one of enum composition_method. |
e951386e | 1234 | |
ff0dacd7 KH |
1235 | Optionnal COMPOSITION-COMPONENTS are characters and composition |
1236 | rules. | |
1237 | ||
1238 | In the case of CODING_ANNOTATE_CHARSET_MASK, one element CHARSET-ID | |
e951386e KH |
1239 | follows. |
1240 | ||
1241 | If ANNOTATION_MASK is 0, this annotation is just a space holder to | |
1242 | recover from an invalid annotation, and should be skipped by | |
1243 | produce_annotation. */ | |
1244 | ||
1245 | /* Maximum length of the header of annotation data. */ | |
1246 | #define MAX_ANNOTATION_LENGTH 5 | |
ff0dacd7 | 1247 | |
69a80ea3 | 1248 | #define ADD_ANNOTATION_DATA(buf, len, mask, nchars) \ |
ff0dacd7 KH |
1249 | do { \ |
1250 | *(buf)++ = -(len); \ | |
1251 | *(buf)++ = (mask); \ | |
69a80ea3 | 1252 | *(buf)++ = (nchars); \ |
ff0dacd7 KH |
1253 | coding->annotated = 1; \ |
1254 | } while (0); | |
1255 | ||
e951386e | 1256 | #define ADD_COMPOSITION_DATA(buf, nchars, nbytes, method) \ |
69a80ea3 | 1257 | do { \ |
e951386e KH |
1258 | ADD_ANNOTATION_DATA (buf, 5, CODING_ANNOTATE_COMPOSITION_MASK, nchars); \ |
1259 | *buf++ = nbytes; \ | |
69a80ea3 | 1260 | *buf++ = method; \ |
ff0dacd7 KH |
1261 | } while (0) |
1262 | ||
1263 | ||
69a80ea3 KH |
1264 | #define ADD_CHARSET_DATA(buf, nchars, id) \ |
1265 | do { \ | |
1266 | ADD_ANNOTATION_DATA (buf, 4, CODING_ANNOTATE_CHARSET_MASK, nchars); \ | |
1267 | *buf++ = id; \ | |
ff0dacd7 KH |
1268 | } while (0) |
1269 | ||
df7492f9 KH |
1270 | \f |
1271 | /*** 2. Emacs' internal format (emacs-utf-8) ***/ | |
1272 | ||
1273 | ||
1274 | ||
1275 | \f | |
1276 | /*** 3. UTF-8 ***/ | |
1277 | ||
1278 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
ff0dacd7 KH |
1279 | Check if a text is encoded in UTF-8. If it is, return 1, else |
1280 | return 0. */ | |
df7492f9 KH |
1281 | |
1282 | #define UTF_8_1_OCTET_P(c) ((c) < 0x80) | |
1283 | #define UTF_8_EXTRA_OCTET_P(c) (((c) & 0xC0) == 0x80) | |
1284 | #define UTF_8_2_OCTET_LEADING_P(c) (((c) & 0xE0) == 0xC0) | |
1285 | #define UTF_8_3_OCTET_LEADING_P(c) (((c) & 0xF0) == 0xE0) | |
1286 | #define UTF_8_4_OCTET_LEADING_P(c) (((c) & 0xF8) == 0xF0) | |
1287 | #define UTF_8_5_OCTET_LEADING_P(c) (((c) & 0xFC) == 0xF8) | |
1288 | ||
a470d443 KH |
1289 | #define UTF_BOM 0xFEFF |
1290 | #define UTF_8_BOM_1 0xEF | |
1291 | #define UTF_8_BOM_2 0xBB | |
1292 | #define UTF_8_BOM_3 0xBF | |
1293 | ||
df7492f9 | 1294 | static int |
ff0dacd7 | 1295 | detect_coding_utf_8 (coding, detect_info) |
df7492f9 | 1296 | struct coding_system *coding; |
ff0dacd7 | 1297 | struct coding_detection_info *detect_info; |
df7492f9 | 1298 | { |
065e3595 | 1299 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 1300 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
1301 | int multibytep = coding->src_multibyte; |
1302 | int consumed_chars = 0; | |
a470d443 | 1303 | int bom_found = 0; |
df7492f9 KH |
1304 | int found = 0; |
1305 | ||
ff0dacd7 | 1306 | detect_info->checked |= CATEGORY_MASK_UTF_8; |
df7492f9 KH |
1307 | /* A coding system of this category is always ASCII compatible. */ |
1308 | src += coding->head_ascii; | |
1309 | ||
1310 | while (1) | |
aa72b389 | 1311 | { |
df7492f9 | 1312 | int c, c1, c2, c3, c4; |
aa72b389 | 1313 | |
065e3595 | 1314 | src_base = src; |
df7492f9 | 1315 | ONE_MORE_BYTE (c); |
065e3595 | 1316 | if (c < 0 || UTF_8_1_OCTET_P (c)) |
df7492f9 KH |
1317 | continue; |
1318 | ONE_MORE_BYTE (c1); | |
065e3595 | 1319 | if (c1 < 0 || ! UTF_8_EXTRA_OCTET_P (c1)) |
df7492f9 KH |
1320 | break; |
1321 | if (UTF_8_2_OCTET_LEADING_P (c)) | |
aa72b389 | 1322 | { |
a470d443 | 1323 | found = 1; |
df7492f9 | 1324 | continue; |
aa72b389 | 1325 | } |
df7492f9 | 1326 | ONE_MORE_BYTE (c2); |
065e3595 | 1327 | if (c2 < 0 || ! UTF_8_EXTRA_OCTET_P (c2)) |
df7492f9 KH |
1328 | break; |
1329 | if (UTF_8_3_OCTET_LEADING_P (c)) | |
aa72b389 | 1330 | { |
a470d443 KH |
1331 | found = 1; |
1332 | if (src_base == coding->source | |
1333 | && c == UTF_8_BOM_1 && c1 == UTF_8_BOM_2 && c2 == UTF_8_BOM_3) | |
1334 | bom_found = 1; | |
df7492f9 | 1335 | continue; |
aa72b389 | 1336 | } |
df7492f9 | 1337 | ONE_MORE_BYTE (c3); |
065e3595 | 1338 | if (c3 < 0 || ! UTF_8_EXTRA_OCTET_P (c3)) |
df7492f9 KH |
1339 | break; |
1340 | if (UTF_8_4_OCTET_LEADING_P (c)) | |
aa72b389 | 1341 | { |
a470d443 | 1342 | found = 1; |
df7492f9 KH |
1343 | continue; |
1344 | } | |
1345 | ONE_MORE_BYTE (c4); | |
065e3595 | 1346 | if (c4 < 0 || ! UTF_8_EXTRA_OCTET_P (c4)) |
df7492f9 KH |
1347 | break; |
1348 | if (UTF_8_5_OCTET_LEADING_P (c)) | |
1349 | { | |
a470d443 | 1350 | found = 1; |
df7492f9 KH |
1351 | continue; |
1352 | } | |
1353 | break; | |
aa72b389 | 1354 | } |
ff0dacd7 | 1355 | detect_info->rejected |= CATEGORY_MASK_UTF_8; |
df7492f9 | 1356 | return 0; |
aa72b389 | 1357 | |
df7492f9 | 1358 | no_more_source: |
065e3595 | 1359 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
aa72b389 | 1360 | { |
ff0dacd7 | 1361 | detect_info->rejected |= CATEGORY_MASK_UTF_8; |
89528eb3 | 1362 | return 0; |
aa72b389 | 1363 | } |
a470d443 KH |
1364 | if (bom_found) |
1365 | { | |
1366 | /* The first character 0xFFFE doesn't necessarily mean a BOM. */ | |
1367 | detect_info->found |= CATEGORY_MASK_UTF_8_SIG | CATEGORY_MASK_UTF_8_NOSIG; | |
1368 | } | |
1369 | else | |
1370 | { | |
1371 | detect_info->rejected |= CATEGORY_MASK_UTF_8_SIG; | |
0e17387a KH |
1372 | if (found) |
1373 | detect_info->found |= CATEGORY_MASK_UTF_8_NOSIG; | |
a470d443 | 1374 | } |
ff0dacd7 | 1375 | return 1; |
aa72b389 KH |
1376 | } |
1377 | ||
4ed46869 | 1378 | |
b73bfc1c | 1379 | static void |
df7492f9 | 1380 | decode_coding_utf_8 (coding) |
b73bfc1c | 1381 | struct coding_system *coding; |
b73bfc1c | 1382 | { |
8f924df7 KH |
1383 | const unsigned char *src = coding->source + coding->consumed; |
1384 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
1385 | const unsigned char *src_base; | |
69a80ea3 KH |
1386 | int *charbuf = coding->charbuf + coding->charbuf_used; |
1387 | int *charbuf_end = coding->charbuf + coding->charbuf_size; | |
453b38f0 | 1388 | int consumed_chars = 0, consumed_chars_base = 0; |
df7492f9 | 1389 | int multibytep = coding->src_multibyte; |
a470d443 | 1390 | enum utf_bom_type bom = CODING_UTF_8_BOM (coding); |
24a73b0a | 1391 | Lisp_Object attr, charset_list; |
0a9564cb EZ |
1392 | int eol_crlf = |
1393 | !inhibit_eol_conversion && EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); | |
119852e7 | 1394 | int byte_after_cr = -1; |
4ed46869 | 1395 | |
24a73b0a | 1396 | CODING_GET_INFO (coding, attr, charset_list); |
df7492f9 | 1397 | |
a470d443 KH |
1398 | if (bom != utf_without_bom) |
1399 | { | |
1400 | int c1, c2, c3; | |
1401 | ||
1402 | src_base = src; | |
1403 | ONE_MORE_BYTE (c1); | |
1404 | if (! UTF_8_3_OCTET_LEADING_P (c1)) | |
1405 | src = src_base; | |
1406 | else | |
1407 | { | |
159bd5a2 | 1408 | ONE_MORE_BYTE (c2); |
a470d443 KH |
1409 | if (! UTF_8_EXTRA_OCTET_P (c2)) |
1410 | src = src_base; | |
1411 | else | |
1412 | { | |
159bd5a2 | 1413 | ONE_MORE_BYTE (c3); |
a470d443 KH |
1414 | if (! UTF_8_EXTRA_OCTET_P (c3)) |
1415 | src = src_base; | |
1416 | else | |
1417 | { | |
1418 | if ((c1 != UTF_8_BOM_1) | |
1419 | || (c2 != UTF_8_BOM_2) || (c3 != UTF_8_BOM_3)) | |
1420 | src = src_base; | |
1421 | else | |
1422 | CODING_UTF_8_BOM (coding) = utf_without_bom; | |
1423 | } | |
1424 | } | |
1425 | } | |
1426 | } | |
1427 | CODING_UTF_8_BOM (coding) = utf_without_bom; | |
1428 | ||
1429 | ||
1430 | ||
df7492f9 | 1431 | while (1) |
b73bfc1c | 1432 | { |
df7492f9 | 1433 | int c, c1, c2, c3, c4, c5; |
ec6d2bb8 | 1434 | |
df7492f9 KH |
1435 | src_base = src; |
1436 | consumed_chars_base = consumed_chars; | |
4af310db | 1437 | |
df7492f9 | 1438 | if (charbuf >= charbuf_end) |
b71f6f73 KH |
1439 | { |
1440 | if (byte_after_cr >= 0) | |
1441 | src_base--; | |
1442 | break; | |
1443 | } | |
df7492f9 | 1444 | |
119852e7 KH |
1445 | if (byte_after_cr >= 0) |
1446 | c1 = byte_after_cr, byte_after_cr = -1; | |
1447 | else | |
1448 | ONE_MORE_BYTE (c1); | |
065e3595 KH |
1449 | if (c1 < 0) |
1450 | { | |
1451 | c = - c1; | |
1452 | } | |
1453 | else if (UTF_8_1_OCTET_P(c1)) | |
df7492f9 | 1454 | { |
119852e7 KH |
1455 | if (eol_crlf && c1 == '\r') |
1456 | ONE_MORE_BYTE (byte_after_cr); | |
df7492f9 | 1457 | c = c1; |
4af310db | 1458 | } |
df7492f9 | 1459 | else |
4af310db | 1460 | { |
df7492f9 | 1461 | ONE_MORE_BYTE (c2); |
065e3595 | 1462 | if (c2 < 0 || ! UTF_8_EXTRA_OCTET_P (c2)) |
df7492f9 KH |
1463 | goto invalid_code; |
1464 | if (UTF_8_2_OCTET_LEADING_P (c1)) | |
4af310db | 1465 | { |
b0edb2c5 DL |
1466 | c = ((c1 & 0x1F) << 6) | (c2 & 0x3F); |
1467 | /* Reject overlong sequences here and below. Encoders | |
1468 | producing them are incorrect, they can be misleading, | |
1469 | and they mess up read/write invariance. */ | |
1470 | if (c < 128) | |
1471 | goto invalid_code; | |
4af310db | 1472 | } |
df7492f9 | 1473 | else |
aa72b389 | 1474 | { |
df7492f9 | 1475 | ONE_MORE_BYTE (c3); |
065e3595 | 1476 | if (c3 < 0 || ! UTF_8_EXTRA_OCTET_P (c3)) |
df7492f9 KH |
1477 | goto invalid_code; |
1478 | if (UTF_8_3_OCTET_LEADING_P (c1)) | |
b0edb2c5 DL |
1479 | { |
1480 | c = (((c1 & 0xF) << 12) | |
1481 | | ((c2 & 0x3F) << 6) | (c3 & 0x3F)); | |
72fe1301 DL |
1482 | if (c < 0x800 |
1483 | || (c >= 0xd800 && c < 0xe000)) /* surrogates (invalid) */ | |
b0edb2c5 DL |
1484 | goto invalid_code; |
1485 | } | |
df7492f9 KH |
1486 | else |
1487 | { | |
1488 | ONE_MORE_BYTE (c4); | |
065e3595 | 1489 | if (c4 < 0 || ! UTF_8_EXTRA_OCTET_P (c4)) |
df7492f9 KH |
1490 | goto invalid_code; |
1491 | if (UTF_8_4_OCTET_LEADING_P (c1)) | |
b0edb2c5 | 1492 | { |
df7492f9 KH |
1493 | c = (((c1 & 0x7) << 18) | ((c2 & 0x3F) << 12) |
1494 | | ((c3 & 0x3F) << 6) | (c4 & 0x3F)); | |
b0edb2c5 DL |
1495 | if (c < 0x10000) |
1496 | goto invalid_code; | |
1497 | } | |
df7492f9 KH |
1498 | else |
1499 | { | |
1500 | ONE_MORE_BYTE (c5); | |
065e3595 | 1501 | if (c5 < 0 || ! UTF_8_EXTRA_OCTET_P (c5)) |
df7492f9 KH |
1502 | goto invalid_code; |
1503 | if (UTF_8_5_OCTET_LEADING_P (c1)) | |
1504 | { | |
1505 | c = (((c1 & 0x3) << 24) | ((c2 & 0x3F) << 18) | |
1506 | | ((c3 & 0x3F) << 12) | ((c4 & 0x3F) << 6) | |
1507 | | (c5 & 0x3F)); | |
b0edb2c5 | 1508 | if ((c > MAX_CHAR) || (c < 0x200000)) |
df7492f9 KH |
1509 | goto invalid_code; |
1510 | } | |
1511 | else | |
1512 | goto invalid_code; | |
1513 | } | |
1514 | } | |
aa72b389 | 1515 | } |
b73bfc1c | 1516 | } |
df7492f9 KH |
1517 | |
1518 | *charbuf++ = c; | |
1519 | continue; | |
1520 | ||
1521 | invalid_code: | |
1522 | src = src_base; | |
1523 | consumed_chars = consumed_chars_base; | |
1524 | ONE_MORE_BYTE (c); | |
1525 | *charbuf++ = ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); | |
1526 | coding->errors++; | |
aa72b389 KH |
1527 | } |
1528 | ||
df7492f9 KH |
1529 | no_more_source: |
1530 | coding->consumed_char += consumed_chars_base; | |
1531 | coding->consumed = src_base - coding->source; | |
1532 | coding->charbuf_used = charbuf - coding->charbuf; | |
1533 | } | |
1534 | ||
1535 | ||
1536 | static int | |
1537 | encode_coding_utf_8 (coding) | |
1538 | struct coding_system *coding; | |
1539 | { | |
1540 | int multibytep = coding->dst_multibyte; | |
1541 | int *charbuf = coding->charbuf; | |
1542 | int *charbuf_end = charbuf + coding->charbuf_used; | |
1543 | unsigned char *dst = coding->destination + coding->produced; | |
1544 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
e19c3639 | 1545 | int produced_chars = 0; |
df7492f9 KH |
1546 | int c; |
1547 | ||
a470d443 KH |
1548 | if (CODING_UTF_8_BOM (coding) == utf_with_bom) |
1549 | { | |
1550 | ASSURE_DESTINATION (3); | |
1551 | EMIT_THREE_BYTES (UTF_8_BOM_1, UTF_8_BOM_2, UTF_8_BOM_3); | |
1552 | CODING_UTF_8_BOM (coding) = utf_without_bom; | |
1553 | } | |
1554 | ||
df7492f9 | 1555 | if (multibytep) |
aa72b389 | 1556 | { |
df7492f9 KH |
1557 | int safe_room = MAX_MULTIBYTE_LENGTH * 2; |
1558 | ||
1559 | while (charbuf < charbuf_end) | |
b73bfc1c | 1560 | { |
df7492f9 | 1561 | unsigned char str[MAX_MULTIBYTE_LENGTH], *p, *pend = str; |
8f924df7 | 1562 | |
df7492f9 KH |
1563 | ASSURE_DESTINATION (safe_room); |
1564 | c = *charbuf++; | |
28f67a95 KH |
1565 | if (CHAR_BYTE8_P (c)) |
1566 | { | |
1567 | c = CHAR_TO_BYTE8 (c); | |
1568 | EMIT_ONE_BYTE (c); | |
1569 | } | |
1570 | else | |
1571 | { | |
db274c7a | 1572 | CHAR_STRING_ADVANCE_NO_UNIFY (c, pend); |
28f67a95 KH |
1573 | for (p = str; p < pend; p++) |
1574 | EMIT_ONE_BYTE (*p); | |
1575 | } | |
b73bfc1c | 1576 | } |
aa72b389 | 1577 | } |
df7492f9 KH |
1578 | else |
1579 | { | |
1580 | int safe_room = MAX_MULTIBYTE_LENGTH; | |
1581 | ||
1582 | while (charbuf < charbuf_end) | |
b73bfc1c | 1583 | { |
df7492f9 KH |
1584 | ASSURE_DESTINATION (safe_room); |
1585 | c = *charbuf++; | |
f03caae0 KH |
1586 | if (CHAR_BYTE8_P (c)) |
1587 | *dst++ = CHAR_TO_BYTE8 (c); | |
1588 | else | |
db274c7a | 1589 | CHAR_STRING_ADVANCE_NO_UNIFY (c, dst); |
df7492f9 | 1590 | produced_chars++; |
4ed46869 KH |
1591 | } |
1592 | } | |
065e3595 | 1593 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
1594 | coding->produced_char += produced_chars; |
1595 | coding->produced = dst - coding->destination; | |
1596 | return 0; | |
4ed46869 KH |
1597 | } |
1598 | ||
b73bfc1c | 1599 | |
df7492f9 | 1600 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". |
ff0dacd7 KH |
1601 | Check if a text is encoded in one of UTF-16 based coding systems. |
1602 | If it is, return 1, else return 0. */ | |
aa72b389 | 1603 | |
df7492f9 KH |
1604 | #define UTF_16_HIGH_SURROGATE_P(val) \ |
1605 | (((val) & 0xFC00) == 0xD800) | |
1606 | ||
1607 | #define UTF_16_LOW_SURROGATE_P(val) \ | |
1608 | (((val) & 0xFC00) == 0xDC00) | |
93dec019 | 1609 | |
df7492f9 KH |
1610 | #define UTF_16_INVALID_P(val) \ |
1611 | (((val) == 0xFFFE) \ | |
1612 | || ((val) == 0xFFFF) \ | |
1613 | || UTF_16_LOW_SURROGATE_P (val)) | |
aa72b389 | 1614 | |
aa72b389 | 1615 | |
df7492f9 | 1616 | static int |
ff0dacd7 | 1617 | detect_coding_utf_16 (coding, detect_info) |
aa72b389 | 1618 | struct coding_system *coding; |
ff0dacd7 | 1619 | struct coding_detection_info *detect_info; |
aa72b389 | 1620 | { |
8f924df7 KH |
1621 | const unsigned char *src = coding->source, *src_base = src; |
1622 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
df7492f9 KH |
1623 | int multibytep = coding->src_multibyte; |
1624 | int consumed_chars = 0; | |
1625 | int c1, c2; | |
aa72b389 | 1626 | |
ff0dacd7 | 1627 | detect_info->checked |= CATEGORY_MASK_UTF_16; |
ff0dacd7 | 1628 | if (coding->mode & CODING_MODE_LAST_BLOCK |
24a73b0a | 1629 | && (coding->src_chars & 1)) |
ff0dacd7 KH |
1630 | { |
1631 | detect_info->rejected |= CATEGORY_MASK_UTF_16; | |
1632 | return 0; | |
1633 | } | |
24a73b0a | 1634 | |
f56a4450 | 1635 | TWO_MORE_BYTES (c1, c2); |
df7492f9 | 1636 | if ((c1 == 0xFF) && (c2 == 0xFE)) |
aa72b389 | 1637 | { |
b49a1807 KH |
1638 | detect_info->found |= (CATEGORY_MASK_UTF_16_LE |
1639 | | CATEGORY_MASK_UTF_16_AUTO); | |
24a73b0a KH |
1640 | detect_info->rejected |= (CATEGORY_MASK_UTF_16_BE |
1641 | | CATEGORY_MASK_UTF_16_BE_NOSIG | |
1642 | | CATEGORY_MASK_UTF_16_LE_NOSIG); | |
aa72b389 | 1643 | } |
df7492f9 | 1644 | else if ((c1 == 0xFE) && (c2 == 0xFF)) |
ff0dacd7 | 1645 | { |
b49a1807 KH |
1646 | detect_info->found |= (CATEGORY_MASK_UTF_16_BE |
1647 | | CATEGORY_MASK_UTF_16_AUTO); | |
24a73b0a KH |
1648 | detect_info->rejected |= (CATEGORY_MASK_UTF_16_LE |
1649 | | CATEGORY_MASK_UTF_16_BE_NOSIG | |
1650 | | CATEGORY_MASK_UTF_16_LE_NOSIG); | |
1651 | } | |
220eeac9 | 1652 | else if (c2 < 0) |
f56a4450 KH |
1653 | { |
1654 | detect_info->rejected |= CATEGORY_MASK_UTF_16; | |
1655 | return 0; | |
1656 | } | |
2f3cbb32 | 1657 | else |
24a73b0a | 1658 | { |
2f3cbb32 KH |
1659 | /* We check the dispersion of Eth and Oth bytes where E is even and |
1660 | O is odd. If both are high, we assume binary data.*/ | |
1661 | unsigned char e[256], o[256]; | |
1662 | unsigned e_num = 1, o_num = 1; | |
1663 | ||
1664 | memset (e, 0, 256); | |
1665 | memset (o, 0, 256); | |
1666 | e[c1] = 1; | |
1667 | o[c2] = 1; | |
1668 | ||
cc13543e KH |
1669 | detect_info->rejected |= (CATEGORY_MASK_UTF_16_AUTO |
1670 | |CATEGORY_MASK_UTF_16_BE | |
1671 | | CATEGORY_MASK_UTF_16_LE); | |
2f3cbb32 | 1672 | |
7f1faf1c KH |
1673 | while ((detect_info->rejected & CATEGORY_MASK_UTF_16) |
1674 | != CATEGORY_MASK_UTF_16) | |
2f3cbb32 | 1675 | { |
f56a4450 | 1676 | TWO_MORE_BYTES (c1, c2); |
220eeac9 | 1677 | if (c2 < 0) |
f56a4450 | 1678 | break; |
2f3cbb32 KH |
1679 | if (! e[c1]) |
1680 | { | |
1681 | e[c1] = 1; | |
1682 | e_num++; | |
cc13543e KH |
1683 | if (e_num >= 128) |
1684 | detect_info->rejected |= CATEGORY_MASK_UTF_16_BE_NOSIG; | |
2f3cbb32 KH |
1685 | } |
1686 | if (! o[c2]) | |
1687 | { | |
977b85f4 | 1688 | o[c2] = 1; |
2f3cbb32 | 1689 | o_num++; |
cc13543e KH |
1690 | if (o_num >= 128) |
1691 | detect_info->rejected |= CATEGORY_MASK_UTF_16_LE_NOSIG; | |
2f3cbb32 KH |
1692 | } |
1693 | } | |
2f3cbb32 | 1694 | return 0; |
ff0dacd7 | 1695 | } |
2f3cbb32 | 1696 | |
df7492f9 | 1697 | no_more_source: |
ff0dacd7 | 1698 | return 1; |
df7492f9 | 1699 | } |
aa72b389 | 1700 | |
df7492f9 KH |
1701 | static void |
1702 | decode_coding_utf_16 (coding) | |
1703 | struct coding_system *coding; | |
1704 | { | |
8f924df7 KH |
1705 | const unsigned char *src = coding->source + coding->consumed; |
1706 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
1707 | const unsigned char *src_base; | |
69a80ea3 | 1708 | int *charbuf = coding->charbuf + coding->charbuf_used; |
df80c7f0 KH |
1709 | /* We may produces at most 3 chars in one loop. */ |
1710 | int *charbuf_end = coding->charbuf + coding->charbuf_size - 2; | |
3a8406e1 | 1711 | int consumed_chars = 0, consumed_chars_base = 0; |
df7492f9 | 1712 | int multibytep = coding->src_multibyte; |
a470d443 | 1713 | enum utf_bom_type bom = CODING_UTF_16_BOM (coding); |
df7492f9 KH |
1714 | enum utf_16_endian_type endian = CODING_UTF_16_ENDIAN (coding); |
1715 | int surrogate = CODING_UTF_16_SURROGATE (coding); | |
24a73b0a | 1716 | Lisp_Object attr, charset_list; |
0a9564cb EZ |
1717 | int eol_crlf = |
1718 | !inhibit_eol_conversion && EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); | |
119852e7 | 1719 | int byte_after_cr1 = -1, byte_after_cr2 = -1; |
df7492f9 | 1720 | |
24a73b0a | 1721 | CODING_GET_INFO (coding, attr, charset_list); |
df7492f9 | 1722 | |
a470d443 | 1723 | if (bom == utf_with_bom) |
aa72b389 | 1724 | { |
df7492f9 | 1725 | int c, c1, c2; |
4af310db | 1726 | |
aa72b389 | 1727 | src_base = src; |
df7492f9 KH |
1728 | ONE_MORE_BYTE (c1); |
1729 | ONE_MORE_BYTE (c2); | |
e19c3639 | 1730 | c = (c1 << 8) | c2; |
aa72b389 | 1731 | |
b49a1807 KH |
1732 | if (endian == utf_16_big_endian |
1733 | ? c != 0xFEFF : c != 0xFFFE) | |
aa72b389 | 1734 | { |
b49a1807 KH |
1735 | /* The first two bytes are not BOM. Treat them as bytes |
1736 | for a normal character. */ | |
1737 | src = src_base; | |
1738 | coding->errors++; | |
aa72b389 | 1739 | } |
a470d443 | 1740 | CODING_UTF_16_BOM (coding) = utf_without_bom; |
b49a1807 | 1741 | } |
a470d443 | 1742 | else if (bom == utf_detect_bom) |
b49a1807 KH |
1743 | { |
1744 | /* We have already tried to detect BOM and failed in | |
1745 | detect_coding. */ | |
a470d443 | 1746 | CODING_UTF_16_BOM (coding) = utf_without_bom; |
df7492f9 | 1747 | } |
aa72b389 | 1748 | |
df7492f9 KH |
1749 | while (1) |
1750 | { | |
1751 | int c, c1, c2; | |
1752 | ||
1753 | src_base = src; | |
1754 | consumed_chars_base = consumed_chars; | |
1755 | ||
df80c7f0 | 1756 | if (charbuf >= charbuf_end) |
b71f6f73 KH |
1757 | { |
1758 | if (byte_after_cr1 >= 0) | |
1759 | src_base -= 2; | |
1760 | break; | |
1761 | } | |
df7492f9 | 1762 | |
119852e7 KH |
1763 | if (byte_after_cr1 >= 0) |
1764 | c1 = byte_after_cr1, byte_after_cr1 = -1; | |
1765 | else | |
1766 | ONE_MORE_BYTE (c1); | |
065e3595 KH |
1767 | if (c1 < 0) |
1768 | { | |
1769 | *charbuf++ = -c1; | |
1770 | continue; | |
1771 | } | |
119852e7 KH |
1772 | if (byte_after_cr2 >= 0) |
1773 | c2 = byte_after_cr2, byte_after_cr2 = -1; | |
1774 | else | |
1775 | ONE_MORE_BYTE (c2); | |
065e3595 KH |
1776 | if (c2 < 0) |
1777 | { | |
1778 | *charbuf++ = ASCII_BYTE_P (c1) ? c1 : BYTE8_TO_CHAR (c1); | |
1779 | *charbuf++ = -c2; | |
1780 | continue; | |
1781 | } | |
df7492f9 | 1782 | c = (endian == utf_16_big_endian |
e19c3639 | 1783 | ? ((c1 << 8) | c2) : ((c2 << 8) | c1)); |
119852e7 | 1784 | |
df7492f9 | 1785 | if (surrogate) |
fd3ae0b9 | 1786 | { |
df7492f9 | 1787 | if (! UTF_16_LOW_SURROGATE_P (c)) |
fd3ae0b9 | 1788 | { |
df7492f9 KH |
1789 | if (endian == utf_16_big_endian) |
1790 | c1 = surrogate >> 8, c2 = surrogate & 0xFF; | |
1791 | else | |
1792 | c1 = surrogate & 0xFF, c2 = surrogate >> 8; | |
1793 | *charbuf++ = c1; | |
1794 | *charbuf++ = c2; | |
1795 | coding->errors++; | |
1796 | if (UTF_16_HIGH_SURROGATE_P (c)) | |
1797 | CODING_UTF_16_SURROGATE (coding) = surrogate = c; | |
fd3ae0b9 | 1798 | else |
df7492f9 | 1799 | *charbuf++ = c; |
fd3ae0b9 KH |
1800 | } |
1801 | else | |
df7492f9 KH |
1802 | { |
1803 | c = ((surrogate - 0xD800) << 10) | (c - 0xDC00); | |
1804 | CODING_UTF_16_SURROGATE (coding) = surrogate = 0; | |
29f7ffd0 | 1805 | *charbuf++ = 0x10000 + c; |
df7492f9 | 1806 | } |
fd3ae0b9 | 1807 | } |
aa72b389 | 1808 | else |
df7492f9 KH |
1809 | { |
1810 | if (UTF_16_HIGH_SURROGATE_P (c)) | |
1811 | CODING_UTF_16_SURROGATE (coding) = surrogate = c; | |
1812 | else | |
119852e7 KH |
1813 | { |
1814 | if (eol_crlf && c == '\r') | |
1815 | { | |
1816 | ONE_MORE_BYTE (byte_after_cr1); | |
1817 | ONE_MORE_BYTE (byte_after_cr2); | |
1818 | } | |
1819 | *charbuf++ = c; | |
1820 | } | |
8f924df7 | 1821 | } |
aa72b389 | 1822 | } |
df7492f9 KH |
1823 | |
1824 | no_more_source: | |
1825 | coding->consumed_char += consumed_chars_base; | |
1826 | coding->consumed = src_base - coding->source; | |
1827 | coding->charbuf_used = charbuf - coding->charbuf; | |
aa72b389 | 1828 | } |
b73bfc1c | 1829 | |
df7492f9 KH |
1830 | static int |
1831 | encode_coding_utf_16 (coding) | |
1832 | struct coding_system *coding; | |
1833 | { | |
1834 | int multibytep = coding->dst_multibyte; | |
1835 | int *charbuf = coding->charbuf; | |
1836 | int *charbuf_end = charbuf + coding->charbuf_used; | |
1837 | unsigned char *dst = coding->destination + coding->produced; | |
1838 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
1839 | int safe_room = 8; | |
a470d443 | 1840 | enum utf_bom_type bom = CODING_UTF_16_BOM (coding); |
df7492f9 KH |
1841 | int big_endian = CODING_UTF_16_ENDIAN (coding) == utf_16_big_endian; |
1842 | int produced_chars = 0; | |
24a73b0a | 1843 | Lisp_Object attrs, charset_list; |
df7492f9 | 1844 | int c; |
4ed46869 | 1845 | |
24a73b0a | 1846 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 | 1847 | |
a470d443 | 1848 | if (bom != utf_without_bom) |
df7492f9 KH |
1849 | { |
1850 | ASSURE_DESTINATION (safe_room); | |
1851 | if (big_endian) | |
df7492f9 | 1852 | EMIT_TWO_BYTES (0xFE, 0xFF); |
880cf180 KH |
1853 | else |
1854 | EMIT_TWO_BYTES (0xFF, 0xFE); | |
a470d443 | 1855 | CODING_UTF_16_BOM (coding) = utf_without_bom; |
df7492f9 KH |
1856 | } |
1857 | ||
1858 | while (charbuf < charbuf_end) | |
1859 | { | |
1860 | ASSURE_DESTINATION (safe_room); | |
1861 | c = *charbuf++; | |
60afa08d | 1862 | if (c > MAX_UNICODE_CHAR) |
e19c3639 | 1863 | c = coding->default_char; |
df7492f9 KH |
1864 | |
1865 | if (c < 0x10000) | |
1866 | { | |
1867 | if (big_endian) | |
1868 | EMIT_TWO_BYTES (c >> 8, c & 0xFF); | |
1869 | else | |
1870 | EMIT_TWO_BYTES (c & 0xFF, c >> 8); | |
1871 | } | |
1872 | else | |
1873 | { | |
1874 | int c1, c2; | |
1875 | ||
1876 | c -= 0x10000; | |
1877 | c1 = (c >> 10) + 0xD800; | |
1878 | c2 = (c & 0x3FF) + 0xDC00; | |
1879 | if (big_endian) | |
1880 | EMIT_FOUR_BYTES (c1 >> 8, c1 & 0xFF, c2 >> 8, c2 & 0xFF); | |
1881 | else | |
1882 | EMIT_FOUR_BYTES (c1 & 0xFF, c1 >> 8, c2 & 0xFF, c2 >> 8); | |
1883 | } | |
1884 | } | |
065e3595 | 1885 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
1886 | coding->produced = dst - coding->destination; |
1887 | coding->produced_char += produced_chars; | |
1888 | return 0; | |
1889 | } | |
1890 | ||
1891 | \f | |
1892 | /*** 6. Old Emacs' internal format (emacs-mule) ***/ | |
1893 | ||
1894 | /* Emacs' internal format for representation of multiple character | |
1895 | sets is a kind of multi-byte encoding, i.e. characters are | |
1896 | represented by variable-length sequences of one-byte codes. | |
1897 | ||
1898 | ASCII characters and control characters (e.g. `tab', `newline') are | |
1899 | represented by one-byte sequences which are their ASCII codes, in | |
1900 | the range 0x00 through 0x7F. | |
1901 | ||
1902 | 8-bit characters of the range 0x80..0x9F are represented by | |
1903 | two-byte sequences of LEADING_CODE_8_BIT_CONTROL and (their 8-bit | |
1904 | code + 0x20). | |
1905 | ||
1906 | 8-bit characters of the range 0xA0..0xFF are represented by | |
1907 | one-byte sequences which are their 8-bit code. | |
1908 | ||
1909 | The other characters are represented by a sequence of `base | |
1910 | leading-code', optional `extended leading-code', and one or two | |
1911 | `position-code's. The length of the sequence is determined by the | |
1912 | base leading-code. Leading-code takes the range 0x81 through 0x9D, | |
1913 | whereas extended leading-code and position-code take the range 0xA0 | |
1914 | through 0xFF. See `charset.h' for more details about leading-code | |
1915 | and position-code. | |
1916 | ||
1917 | --- CODE RANGE of Emacs' internal format --- | |
1918 | character set range | |
1919 | ------------- ----- | |
1920 | ascii 0x00..0x7F | |
1921 | eight-bit-control LEADING_CODE_8_BIT_CONTROL + 0xA0..0xBF | |
1922 | eight-bit-graphic 0xA0..0xBF | |
1923 | ELSE 0x81..0x9D + [0xA0..0xFF]+ | |
1924 | --------------------------------------------- | |
1925 | ||
1926 | As this is the internal character representation, the format is | |
1927 | usually not used externally (i.e. in a file or in a data sent to a | |
1928 | process). But, it is possible to have a text externally in this | |
1929 | format (i.e. by encoding by the coding system `emacs-mule'). | |
1930 | ||
1931 | In that case, a sequence of one-byte codes has a slightly different | |
1932 | form. | |
1933 | ||
1934 | At first, all characters in eight-bit-control are represented by | |
1935 | one-byte sequences which are their 8-bit code. | |
1936 | ||
1937 | Next, character composition data are represented by the byte | |
1938 | sequence of the form: 0x80 METHOD BYTES CHARS COMPONENT ..., | |
1939 | where, | |
e951386e | 1940 | METHOD is 0xF2 plus one of composition method (enum |
df7492f9 KH |
1941 | composition_method), |
1942 | ||
1943 | BYTES is 0xA0 plus a byte length of this composition data, | |
1944 | ||
e951386e | 1945 | CHARS is 0xA0 plus a number of characters composed by this |
df7492f9 KH |
1946 | data, |
1947 | ||
1948 | COMPONENTs are characters of multibye form or composition | |
1949 | rules encoded by two-byte of ASCII codes. | |
1950 | ||
1951 | In addition, for backward compatibility, the following formats are | |
1952 | also recognized as composition data on decoding. | |
1953 | ||
1954 | 0x80 MSEQ ... | |
1955 | 0x80 0xFF MSEQ RULE MSEQ RULE ... MSEQ | |
1956 | ||
1957 | Here, | |
1958 | MSEQ is a multibyte form but in these special format: | |
1959 | ASCII: 0xA0 ASCII_CODE+0x80, | |
1960 | other: LEADING_CODE+0x20 FOLLOWING-BYTE ..., | |
1961 | RULE is a one byte code of the range 0xA0..0xF0 that | |
1962 | represents a composition rule. | |
1963 | */ | |
1964 | ||
1965 | char emacs_mule_bytes[256]; | |
1966 | ||
e951386e KH |
1967 | |
1968 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
1969 | Check if a text is encoded in `emacs-mule'. If it is, return 1, | |
1970 | else return 0. */ | |
1971 | ||
1972 | static int | |
1973 | detect_coding_emacs_mule (coding, detect_info) | |
1974 | struct coding_system *coding; | |
1975 | struct coding_detection_info *detect_info; | |
1976 | { | |
1977 | const unsigned char *src = coding->source, *src_base; | |
1978 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
1979 | int multibytep = coding->src_multibyte; | |
1980 | int consumed_chars = 0; | |
1981 | int c; | |
1982 | int found = 0; | |
1983 | ||
1984 | detect_info->checked |= CATEGORY_MASK_EMACS_MULE; | |
1985 | /* A coding system of this category is always ASCII compatible. */ | |
1986 | src += coding->head_ascii; | |
1987 | ||
1988 | while (1) | |
1989 | { | |
1990 | src_base = src; | |
1991 | ONE_MORE_BYTE (c); | |
1992 | if (c < 0) | |
1993 | continue; | |
1994 | if (c == 0x80) | |
1995 | { | |
1996 | /* Perhaps the start of composite character. We simply skip | |
1997 | it because analyzing it is too heavy for detecting. But, | |
1998 | at least, we check that the composite character | |
1999 | constitutes of more than 4 bytes. */ | |
2000 | const unsigned char *src_base; | |
2001 | ||
2002 | repeat: | |
2003 | src_base = src; | |
2004 | do | |
2005 | { | |
2006 | ONE_MORE_BYTE (c); | |
2007 | } | |
2008 | while (c >= 0xA0); | |
2009 | ||
2010 | if (src - src_base <= 4) | |
2011 | break; | |
2012 | found = CATEGORY_MASK_EMACS_MULE; | |
2013 | if (c == 0x80) | |
2014 | goto repeat; | |
2015 | } | |
2016 | ||
2017 | if (c < 0x80) | |
2018 | { | |
2019 | if (c < 0x20 | |
2020 | && (c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO)) | |
2021 | break; | |
2022 | } | |
2023 | else | |
2024 | { | |
2025 | int more_bytes = emacs_mule_bytes[*src_base] - 1; | |
2026 | ||
2027 | while (more_bytes > 0) | |
2028 | { | |
2029 | ONE_MORE_BYTE (c); | |
2030 | if (c < 0xA0) | |
2031 | { | |
2032 | src--; /* Unread the last byte. */ | |
2033 | break; | |
2034 | } | |
2035 | more_bytes--; | |
2036 | } | |
2037 | if (more_bytes != 0) | |
2038 | break; | |
2039 | found = CATEGORY_MASK_EMACS_MULE; | |
2040 | } | |
2041 | } | |
2042 | detect_info->rejected |= CATEGORY_MASK_EMACS_MULE; | |
2043 | return 0; | |
2044 | ||
2045 | no_more_source: | |
2046 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) | |
2047 | { | |
2048 | detect_info->rejected |= CATEGORY_MASK_EMACS_MULE; | |
2049 | return 0; | |
2050 | } | |
2051 | detect_info->found |= found; | |
2052 | return 1; | |
2053 | } | |
2054 | ||
2055 | ||
2056 | /* Parse emacs-mule multibyte sequence at SRC and return the decoded | |
2057 | character. If CMP_STATUS indicates that we must expect MSEQ or | |
2058 | RULE described above, decode it and return the negative value of | |
2059 | the deocded character or rule. If an invalid byte is found, return | |
2060 | -1. If SRC is too short, return -2. */ | |
2061 | ||
df7492f9 | 2062 | int |
e951386e | 2063 | emacs_mule_char (coding, src, nbytes, nchars, id, cmp_status) |
df7492f9 | 2064 | struct coding_system *coding; |
065e3595 | 2065 | const unsigned char *src; |
ff0dacd7 | 2066 | int *nbytes, *nchars, *id; |
e951386e | 2067 | struct composition_status *cmp_status; |
df7492f9 | 2068 | { |
8f924df7 KH |
2069 | const unsigned char *src_end = coding->source + coding->src_bytes; |
2070 | const unsigned char *src_base = src; | |
df7492f9 | 2071 | int multibytep = coding->src_multibyte; |
df7492f9 KH |
2072 | struct charset *charset; |
2073 | unsigned code; | |
2074 | int c; | |
2075 | int consumed_chars = 0; | |
e951386e | 2076 | int mseq_found = 0; |
df7492f9 KH |
2077 | |
2078 | ONE_MORE_BYTE (c); | |
065e3595 | 2079 | if (c < 0) |
df7492f9 | 2080 | { |
065e3595 KH |
2081 | c = -c; |
2082 | charset = emacs_mule_charset[0]; | |
2083 | } | |
2084 | else | |
2085 | { | |
4d41e8b7 KH |
2086 | if (c >= 0xA0) |
2087 | { | |
e951386e KH |
2088 | if (cmp_status->state != COMPOSING_NO |
2089 | && cmp_status->old_form) | |
4d41e8b7 | 2090 | { |
e951386e KH |
2091 | if (cmp_status->state == COMPOSING_CHAR) |
2092 | { | |
2093 | if (c == 0xA0) | |
2094 | { | |
2095 | ONE_MORE_BYTE (c); | |
2096 | c -= 0x80; | |
2097 | if (c < 0) | |
2098 | goto invalid_code; | |
2099 | } | |
2100 | else | |
2101 | c -= 0x20; | |
2102 | mseq_found = 1; | |
2103 | } | |
2104 | else | |
2105 | { | |
2106 | *nbytes = src - src_base; | |
2107 | *nchars = consumed_chars; | |
2108 | return -c; | |
2109 | } | |
4d41e8b7 KH |
2110 | } |
2111 | else | |
e951386e | 2112 | goto invalid_code; |
4d41e8b7 KH |
2113 | } |
2114 | ||
065e3595 | 2115 | switch (emacs_mule_bytes[c]) |
b73bfc1c | 2116 | { |
065e3595 | 2117 | case 2: |
df7492f9 KH |
2118 | if (! (charset = emacs_mule_charset[c])) |
2119 | goto invalid_code; | |
2120 | ONE_MORE_BYTE (c); | |
9ffd559c | 2121 | if (c < 0xA0) |
065e3595 | 2122 | goto invalid_code; |
df7492f9 | 2123 | code = c & 0x7F; |
065e3595 KH |
2124 | break; |
2125 | ||
2126 | case 3: | |
2127 | if (c == EMACS_MULE_LEADING_CODE_PRIVATE_11 | |
2128 | || c == EMACS_MULE_LEADING_CODE_PRIVATE_12) | |
2129 | { | |
2130 | ONE_MORE_BYTE (c); | |
9ffd559c | 2131 | if (c < 0xA0 || ! (charset = emacs_mule_charset[c])) |
065e3595 KH |
2132 | goto invalid_code; |
2133 | ONE_MORE_BYTE (c); | |
9ffd559c | 2134 | if (c < 0xA0) |
065e3595 KH |
2135 | goto invalid_code; |
2136 | code = c & 0x7F; | |
2137 | } | |
2138 | else | |
2139 | { | |
2140 | if (! (charset = emacs_mule_charset[c])) | |
2141 | goto invalid_code; | |
2142 | ONE_MORE_BYTE (c); | |
9ffd559c | 2143 | if (c < 0xA0) |
065e3595 KH |
2144 | goto invalid_code; |
2145 | code = (c & 0x7F) << 8; | |
2146 | ONE_MORE_BYTE (c); | |
9ffd559c | 2147 | if (c < 0xA0) |
065e3595 KH |
2148 | goto invalid_code; |
2149 | code |= c & 0x7F; | |
2150 | } | |
2151 | break; | |
2152 | ||
2153 | case 4: | |
2154 | ONE_MORE_BYTE (c); | |
2155 | if (c < 0 || ! (charset = emacs_mule_charset[c])) | |
df7492f9 KH |
2156 | goto invalid_code; |
2157 | ONE_MORE_BYTE (c); | |
9ffd559c | 2158 | if (c < 0xA0) |
065e3595 | 2159 | goto invalid_code; |
781d7a48 | 2160 | code = (c & 0x7F) << 8; |
df7492f9 | 2161 | ONE_MORE_BYTE (c); |
9ffd559c | 2162 | if (c < 0xA0) |
065e3595 | 2163 | goto invalid_code; |
df7492f9 | 2164 | code |= c & 0x7F; |
065e3595 | 2165 | break; |
df7492f9 | 2166 | |
065e3595 KH |
2167 | case 1: |
2168 | code = c; | |
2169 | charset = CHARSET_FROM_ID (ASCII_BYTE_P (code) | |
2170 | ? charset_ascii : charset_eight_bit); | |
2171 | break; | |
df7492f9 | 2172 | |
065e3595 KH |
2173 | default: |
2174 | abort (); | |
2175 | } | |
2176 | c = DECODE_CHAR (charset, code); | |
2177 | if (c < 0) | |
2178 | goto invalid_code; | |
df7492f9 | 2179 | } |
df7492f9 KH |
2180 | *nbytes = src - src_base; |
2181 | *nchars = consumed_chars; | |
ff0dacd7 KH |
2182 | if (id) |
2183 | *id = charset->id; | |
e951386e | 2184 | return (mseq_found ? -c : c); |
df7492f9 KH |
2185 | |
2186 | no_more_source: | |
2187 | return -2; | |
2188 | ||
2189 | invalid_code: | |
2190 | return -1; | |
2191 | } | |
2192 | ||
2193 | ||
e951386e | 2194 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". */ |
df7492f9 | 2195 | |
e951386e KH |
2196 | /* Handle these composition sequence ('|': the end of header elements, |
2197 | BYTES and CHARS >= 0xA0): | |
df7492f9 | 2198 | |
e951386e KH |
2199 | (1) relative composition: 0x80 0xF2 BYTES CHARS | CHAR ... |
2200 | (2) altchar composition: 0x80 0xF4 BYTES CHARS | ALT ... ALT CHAR ... | |
2201 | (3) alt&rule composition: 0x80 0xF5 BYTES CHARS | ALT RULE ... ALT CHAR ... | |
df7492f9 | 2202 | |
e951386e KH |
2203 | and these old form: |
2204 | ||
2205 | (4) relative composition: 0x80 | MSEQ ... MSEQ | |
2206 | (5) rulebase composition: 0x80 0xFF | MSEQ MRULE ... MSEQ | |
df7492f9 | 2207 | |
e951386e KH |
2208 | When the starter 0x80 and the following header elements are found, |
2209 | this annotation header is produced. | |
df7492f9 | 2210 | |
e951386e | 2211 | [ -LENGTH(==-5) CODING_ANNOTATE_COMPOSITION_MASK NCHARS NBYTES METHOD ] |
df7492f9 | 2212 | |
e951386e KH |
2213 | NCHARS is CHARS - 0xA0 for (1), (2), (3), and 0 for (4), (5). |
2214 | NBYTES is BYTES - 0xA0 for (1), (2), (3), and 0 for (4), (5). | |
df7492f9 | 2215 | |
e951386e KH |
2216 | Then, upon reading the following elements, these codes are produced |
2217 | until the composition end is found: | |
df7492f9 | 2218 | |
e951386e KH |
2219 | (1) CHAR ... CHAR |
2220 | (2) ALT ... ALT CHAR ... CHAR | |
2221 | (3) ALT -2 DECODED-RULE ALT -2 DECODED-RULE ... ALT CHAR ... CHAR | |
2222 | (4) CHAR ... CHAR | |
2223 | (5) CHAR -2 DECODED-RULE CHAR -2 DECODED-RULE ... CHAR | |
4ed46869 | 2224 | |
e951386e KH |
2225 | When the composition end is found, LENGTH and NCHARS in the |
2226 | annotation header is updated as below: | |
b73bfc1c | 2227 | |
e951386e KH |
2228 | (1) LENGTH: unchanged, NCHARS: unchanged |
2229 | (2) LENGTH: length of the whole sequence minus NCHARS, NCHARS: unchanged | |
2230 | (3) LENGTH: length of the whole sequence minus NCHARS, NCHARS: unchanged | |
2231 | (4) LENGTH: unchanged, NCHARS: number of CHARs | |
2232 | (5) LENGTH: unchanged, NCHARS: number of CHARs | |
df7492f9 | 2233 | |
e951386e KH |
2234 | If an error is found while composing, the annotation header is |
2235 | changed to the original composition header (plus filler -1s) as | |
2236 | below: | |
2237 | ||
2238 | (1),(2),(3) [ 0x80 0xF2+METHOD BYTES CHARS -1 ] | |
2239 | (5) [ 0x80 0xFF -1 -1- -1 ] | |
2240 | ||
2241 | and the sequence [ -2 DECODED-RULE ] is changed to the original | |
2242 | byte sequence as below: | |
2243 | o the original byte sequence is B: [ B -1 ] | |
2244 | o the original byte sequence is B1 B2: [ B1 B2 ] | |
2245 | ||
2246 | Most of the routines are implemented by macros because many | |
2247 | variables and labels in the caller decode_coding_emacs_mule must be | |
2248 | accessible, and they are usually called just once (thus doesn't | |
2249 | increase the size of compiled object). */ | |
2250 | ||
2251 | /* Decode a composition rule represented by C as a component of | |
2252 | composition sequence of Emacs 20 style. Set RULE to the decoded | |
2253 | rule. */ | |
2254 | ||
2255 | #define DECODE_EMACS_MULE_COMPOSITION_RULE_20(c, rule) \ | |
df7492f9 | 2256 | do { \ |
e951386e KH |
2257 | int gref, nref; \ |
2258 | \ | |
4d41e8b7 | 2259 | c -= 0xA0; \ |
df7492f9 KH |
2260 | if (c < 0 || c >= 81) \ |
2261 | goto invalid_code; \ | |
df7492f9 | 2262 | gref = c / 9, nref = c % 9; \ |
e951386e KH |
2263 | if (gref == 4) gref = 10; \ |
2264 | if (nref == 4) nref = 10; \ | |
2265 | rule = COMPOSITION_ENCODE_RULE (gref, nref); \ | |
df7492f9 KH |
2266 | } while (0) |
2267 | ||
2268 | ||
e951386e KH |
2269 | /* Decode a composition rule represented by C and the following byte |
2270 | at SRC as a component of composition sequence of Emacs 21 style. | |
2271 | Set RULE to the decoded rule. */ | |
781d7a48 | 2272 | |
e951386e | 2273 | #define DECODE_EMACS_MULE_COMPOSITION_RULE_21(c, rule) \ |
781d7a48 KH |
2274 | do { \ |
2275 | int gref, nref; \ | |
e951386e KH |
2276 | \ |
2277 | gref = c - 0x20; \ | |
2278 | if (gref < 0 || gref >= 81) \ | |
781d7a48 | 2279 | goto invalid_code; \ |
e951386e KH |
2280 | ONE_MORE_BYTE (c); \ |
2281 | nref = c - 0x20; \ | |
2282 | if (nref < 0 || nref >= 81) \ | |
781d7a48 | 2283 | goto invalid_code; \ |
e951386e | 2284 | rule = COMPOSITION_ENCODE_RULE (gref, nref); \ |
781d7a48 KH |
2285 | } while (0) |
2286 | ||
2287 | ||
e951386e KH |
2288 | /* Start of Emacs 21 style format. The first three bytes at SRC are |
2289 | (METHOD - 0xF2), (BYTES - 0xA0), (CHARS - 0xA0), where BYTES is the | |
2290 | byte length of this composition information, CHARS is the number of | |
2291 | characters composed by this composition. */ | |
2292 | ||
2293 | #define DECODE_EMACS_MULE_21_COMPOSITION() \ | |
aa72b389 | 2294 | do { \ |
781d7a48 KH |
2295 | enum composition_method method = c - 0xF2; \ |
2296 | int *charbuf_base = charbuf; \ | |
df7492f9 | 2297 | int nbytes, nchars; \ |
e951386e | 2298 | \ |
df7492f9 | 2299 | ONE_MORE_BYTE (c); \ |
065e3595 KH |
2300 | if (c < 0) \ |
2301 | goto invalid_code; \ | |
df7492f9 | 2302 | nbytes = c - 0xA0; \ |
e951386e | 2303 | if (nbytes < 3 || (method == COMPOSITION_RELATIVE && nbytes != 4)) \ |
df7492f9 KH |
2304 | goto invalid_code; \ |
2305 | ONE_MORE_BYTE (c); \ | |
2306 | nchars = c - 0xA0; \ | |
e951386e KH |
2307 | if (nchars <= 0 || nchars >= MAX_COMPOSITION_COMPONENTS) \ |
2308 | goto invalid_code; \ | |
2309 | cmp_status->old_form = 0; \ | |
2310 | cmp_status->method = method; \ | |
2311 | if (method == COMPOSITION_RELATIVE) \ | |
2312 | cmp_status->state = COMPOSING_CHAR; \ | |
2313 | else \ | |
2314 | cmp_status->state = COMPOSING_COMPONENT_CHAR; \ | |
2315 | cmp_status->length = MAX_ANNOTATION_LENGTH; \ | |
2316 | cmp_status->nchars = nchars; \ | |
2317 | cmp_status->ncomps = nbytes - 4; \ | |
2318 | ADD_COMPOSITION_DATA (charbuf, nchars, nbytes, method); \ | |
aa72b389 | 2319 | } while (0) |
93dec019 | 2320 | |
aa72b389 | 2321 | |
e951386e KH |
2322 | /* Start of Emacs 20 style format for relative composition. */ |
2323 | ||
2324 | #define DECODE_EMACS_MULE_20_RELATIVE_COMPOSITION() \ | |
2325 | do { \ | |
2326 | cmp_status->old_form = 1; \ | |
2327 | cmp_status->method = COMPOSITION_RELATIVE; \ | |
2328 | cmp_status->state = COMPOSING_CHAR; \ | |
2329 | cmp_status->length = MAX_ANNOTATION_LENGTH; \ | |
2330 | cmp_status->nchars = cmp_status->ncomps = 0; \ | |
2331 | ADD_COMPOSITION_DATA (charbuf, 0, 0, cmp_status->method); \ | |
2332 | } while (0) | |
2333 | ||
2334 | ||
2335 | /* Start of Emacs 20 style format for rule-base composition. */ | |
2336 | ||
2337 | #define DECODE_EMACS_MULE_20_RULEBASE_COMPOSITION() \ | |
2338 | do { \ | |
2339 | cmp_status->old_form = 1; \ | |
2340 | cmp_status->method = COMPOSITION_WITH_RULE; \ | |
2341 | cmp_status->state = COMPOSING_CHAR; \ | |
2342 | cmp_status->length = MAX_ANNOTATION_LENGTH; \ | |
2343 | cmp_status->nchars = cmp_status->ncomps = 0; \ | |
2344 | ADD_COMPOSITION_DATA (charbuf, 0, 0, cmp_status->method); \ | |
df7492f9 KH |
2345 | } while (0) |
2346 | ||
2347 | ||
e951386e KH |
2348 | #define DECODE_EMACS_MULE_COMPOSITION_START() \ |
2349 | do { \ | |
2350 | const unsigned char *current_src = src; \ | |
2351 | \ | |
2352 | ONE_MORE_BYTE (c); \ | |
2353 | if (c < 0) \ | |
2354 | goto invalid_code; \ | |
2355 | if (c - 0xF2 >= COMPOSITION_RELATIVE \ | |
2356 | && c - 0xF2 <= COMPOSITION_WITH_RULE_ALTCHARS) \ | |
2357 | DECODE_EMACS_MULE_21_COMPOSITION (); \ | |
2358 | else if (c < 0xA0) \ | |
2359 | goto invalid_code; \ | |
2360 | else if (c < 0xC0) \ | |
2361 | { \ | |
2362 | DECODE_EMACS_MULE_20_RELATIVE_COMPOSITION (); \ | |
2363 | /* Re-read C as a composition component. */ \ | |
2364 | src = current_src; \ | |
2365 | } \ | |
2366 | else if (c == 0xFF) \ | |
2367 | DECODE_EMACS_MULE_20_RULEBASE_COMPOSITION (); \ | |
2368 | else \ | |
2369 | goto invalid_code; \ | |
2370 | } while (0) | |
2371 | ||
2372 | #define EMACS_MULE_COMPOSITION_END() \ | |
df7492f9 | 2373 | do { \ |
e951386e | 2374 | int idx = - cmp_status->length; \ |
4d41e8b7 | 2375 | \ |
e951386e KH |
2376 | if (cmp_status->old_form) \ |
2377 | charbuf[idx + 2] = cmp_status->nchars; \ | |
2378 | else if (cmp_status->method > COMPOSITION_RELATIVE) \ | |
2379 | charbuf[idx] = charbuf[idx + 2] - cmp_status->length; \ | |
2380 | cmp_status->state = COMPOSING_NO; \ | |
2381 | } while (0) | |
2382 | ||
2383 | ||
2384 | static int | |
2385 | emacs_mule_finish_composition (charbuf, cmp_status) | |
2386 | int *charbuf; | |
2387 | struct composition_status *cmp_status; | |
2388 | { | |
2389 | int idx = - cmp_status->length; | |
2390 | int new_chars; | |
2391 | ||
2392 | if (cmp_status->old_form && cmp_status->nchars > 0) | |
2393 | { | |
2394 | charbuf[idx + 2] = cmp_status->nchars; | |
2395 | new_chars = 0; | |
2396 | if (cmp_status->method == COMPOSITION_WITH_RULE | |
2397 | && cmp_status->state == COMPOSING_CHAR) | |
2398 | { | |
2399 | /* The last rule was invalid. */ | |
2400 | int rule = charbuf[-1] + 0xA0; | |
2401 | ||
2402 | charbuf[-2] = BYTE8_TO_CHAR (rule); | |
2403 | charbuf[-1] = -1; | |
2404 | new_chars = 1; | |
2405 | } | |
2406 | } | |
2407 | else | |
2408 | { | |
2409 | charbuf[idx++] = BYTE8_TO_CHAR (0x80); | |
2410 | ||
2411 | if (cmp_status->method == COMPOSITION_WITH_RULE) | |
2412 | { | |
2413 | charbuf[idx++] = BYTE8_TO_CHAR (0xFF); | |
2414 | charbuf[idx++] = -3; | |
2415 | charbuf[idx++] = 0; | |
2416 | new_chars = 1; | |
2417 | } | |
2418 | else | |
2419 | { | |
2420 | int nchars = charbuf[idx + 1] + 0xA0; | |
2421 | int nbytes = charbuf[idx + 2] + 0xA0; | |
2422 | ||
2423 | charbuf[idx++] = BYTE8_TO_CHAR (0xF2 + cmp_status->method); | |
2424 | charbuf[idx++] = BYTE8_TO_CHAR (nbytes); | |
2425 | charbuf[idx++] = BYTE8_TO_CHAR (nchars); | |
2426 | charbuf[idx++] = -1; | |
2427 | new_chars = 4; | |
2428 | } | |
2429 | } | |
2430 | cmp_status->state = COMPOSING_NO; | |
2431 | return new_chars; | |
2432 | } | |
2433 | ||
2434 | #define EMACS_MULE_MAYBE_FINISH_COMPOSITION() \ | |
2435 | do { \ | |
2436 | if (cmp_status->state != COMPOSING_NO) \ | |
2437 | char_offset += emacs_mule_finish_composition (charbuf, cmp_status); \ | |
df7492f9 KH |
2438 | } while (0) |
2439 | ||
aa72b389 KH |
2440 | |
2441 | static void | |
df7492f9 | 2442 | decode_coding_emacs_mule (coding) |
aa72b389 | 2443 | struct coding_system *coding; |
aa72b389 | 2444 | { |
8f924df7 KH |
2445 | const unsigned char *src = coding->source + coding->consumed; |
2446 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
2447 | const unsigned char *src_base; | |
69a80ea3 | 2448 | int *charbuf = coding->charbuf + coding->charbuf_used; |
df80c7f0 KH |
2449 | /* We may produce two annocations (charset and composition) in one |
2450 | loop and one more charset annocation at the end. */ | |
69a80ea3 | 2451 | int *charbuf_end |
df80c7f0 | 2452 | = coding->charbuf + coding->charbuf_size - (MAX_ANNOTATION_LENGTH * 3); |
df7492f9 | 2453 | int consumed_chars = 0, consumed_chars_base; |
df7492f9 | 2454 | int multibytep = coding->src_multibyte; |
24a73b0a | 2455 | Lisp_Object attrs, charset_list; |
ff0dacd7 KH |
2456 | int char_offset = coding->produced_char; |
2457 | int last_offset = char_offset; | |
2458 | int last_id = charset_ascii; | |
0a9564cb EZ |
2459 | int eol_crlf = |
2460 | !inhibit_eol_conversion && EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); | |
119852e7 | 2461 | int byte_after_cr = -1; |
e951386e | 2462 | struct composition_status *cmp_status = &coding->spec.emacs_mule.cmp_status; |
aa72b389 | 2463 | |
24a73b0a | 2464 | CODING_GET_INFO (coding, attrs, charset_list); |
aa72b389 | 2465 | |
e951386e KH |
2466 | if (cmp_status->state != COMPOSING_NO) |
2467 | { | |
2468 | int i; | |
2469 | ||
2470 | for (i = 0; i < cmp_status->length; i++) | |
2471 | *charbuf++ = cmp_status->carryover[i]; | |
2472 | coding->annotated = 1; | |
2473 | } | |
2474 | ||
aa72b389 KH |
2475 | while (1) |
2476 | { | |
e951386e | 2477 | int c, id; |
df7492f9 | 2478 | |
aa72b389 | 2479 | src_base = src; |
df7492f9 KH |
2480 | consumed_chars_base = consumed_chars; |
2481 | ||
2482 | if (charbuf >= charbuf_end) | |
b71f6f73 KH |
2483 | { |
2484 | if (byte_after_cr >= 0) | |
2485 | src_base--; | |
2486 | break; | |
2487 | } | |
aa72b389 | 2488 | |
119852e7 KH |
2489 | if (byte_after_cr >= 0) |
2490 | c = byte_after_cr, byte_after_cr = -1; | |
2491 | else | |
2492 | ONE_MORE_BYTE (c); | |
e951386e KH |
2493 | |
2494 | if (c < 0 || c == 0x80) | |
065e3595 | 2495 | { |
e951386e KH |
2496 | EMACS_MULE_MAYBE_FINISH_COMPOSITION (); |
2497 | if (c < 0) | |
2498 | { | |
2499 | *charbuf++ = -c; | |
2500 | char_offset++; | |
2501 | } | |
2502 | else | |
2503 | DECODE_EMACS_MULE_COMPOSITION_START (); | |
2504 | continue; | |
065e3595 | 2505 | } |
e951386e KH |
2506 | |
2507 | if (c < 0x80) | |
aa72b389 | 2508 | { |
119852e7 KH |
2509 | if (eol_crlf && c == '\r') |
2510 | ONE_MORE_BYTE (byte_after_cr); | |
e951386e KH |
2511 | id = charset_ascii; |
2512 | if (cmp_status->state != COMPOSING_NO) | |
2513 | { | |
2514 | if (cmp_status->old_form) | |
2515 | EMACS_MULE_MAYBE_FINISH_COMPOSITION (); | |
2516 | else if (cmp_status->state >= COMPOSING_COMPONENT_CHAR) | |
2517 | cmp_status->ncomps--; | |
2518 | } | |
2519 | } | |
2520 | else | |
2521 | { | |
2522 | int nchars, nbytes; | |
2523 | ||
2524 | c = emacs_mule_char (coding, src_base, &nbytes, &nchars, &id, | |
2525 | cmp_status); | |
2526 | if (c < 0) | |
2527 | { | |
2528 | if (c == -1) | |
2529 | goto invalid_code; | |
2530 | if (c == -2) | |
2531 | break; | |
2532 | } | |
2533 | src = src_base + nbytes; | |
2534 | consumed_chars = consumed_chars_base + nchars; | |
2535 | if (cmp_status->state >= COMPOSING_COMPONENT_CHAR) | |
2536 | cmp_status->ncomps -= nchars; | |
2537 | } | |
2538 | ||
2539 | /* Now if C >= 0, we found a normally encoded characer, if C < | |
2540 | 0, we found an old-style composition component character or | |
2541 | rule. */ | |
2542 | ||
2543 | if (cmp_status->state == COMPOSING_NO) | |
2544 | { | |
2545 | if (last_id != id) | |
2546 | { | |
2547 | if (last_id != charset_ascii) | |
2548 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, | |
2549 | last_id); | |
2550 | last_id = id; | |
2551 | last_offset = char_offset; | |
2552 | } | |
df7492f9 KH |
2553 | *charbuf++ = c; |
2554 | char_offset++; | |
aa72b389 | 2555 | } |
e951386e | 2556 | else if (cmp_status->state == COMPOSING_CHAR) |
df7492f9 | 2557 | { |
e951386e KH |
2558 | if (cmp_status->old_form) |
2559 | { | |
2560 | if (c >= 0) | |
2561 | { | |
2562 | EMACS_MULE_MAYBE_FINISH_COMPOSITION (); | |
2563 | *charbuf++ = c; | |
2564 | char_offset++; | |
2565 | } | |
2566 | else | |
2567 | { | |
2568 | *charbuf++ = -c; | |
2569 | cmp_status->nchars++; | |
2570 | cmp_status->length++; | |
2571 | if (cmp_status->nchars == MAX_COMPOSITION_COMPONENTS) | |
2572 | EMACS_MULE_COMPOSITION_END (); | |
2573 | else if (cmp_status->method == COMPOSITION_WITH_RULE) | |
2574 | cmp_status->state = COMPOSING_RULE; | |
2575 | } | |
2576 | } | |
df7492f9 | 2577 | else |
e951386e KH |
2578 | { |
2579 | *charbuf++ = c; | |
2580 | cmp_status->length++; | |
2581 | cmp_status->nchars--; | |
2582 | if (cmp_status->nchars == 0) | |
2583 | EMACS_MULE_COMPOSITION_END (); | |
2584 | } | |
df7492f9 | 2585 | } |
e951386e | 2586 | else if (cmp_status->state == COMPOSING_RULE) |
df7492f9 | 2587 | { |
e951386e | 2588 | int rule; |
ff0dacd7 | 2589 | |
e951386e | 2590 | if (c >= 0) |
df7492f9 | 2591 | { |
e951386e KH |
2592 | EMACS_MULE_COMPOSITION_END (); |
2593 | *charbuf++ = c; | |
2594 | char_offset++; | |
df7492f9 | 2595 | } |
e951386e | 2596 | else |
ff0dacd7 | 2597 | { |
e951386e KH |
2598 | c = -c; |
2599 | DECODE_EMACS_MULE_COMPOSITION_RULE_20 (c, rule); | |
2600 | if (rule < 0) | |
2601 | goto invalid_code; | |
2602 | *charbuf++ = -2; | |
2603 | *charbuf++ = rule; | |
2604 | cmp_status->length += 2; | |
2605 | cmp_status->state = COMPOSING_CHAR; | |
ff0dacd7 | 2606 | } |
e951386e KH |
2607 | } |
2608 | else if (cmp_status->state == COMPOSING_COMPONENT_CHAR) | |
2609 | { | |
df7492f9 | 2610 | *charbuf++ = c; |
e951386e KH |
2611 | cmp_status->length++; |
2612 | if (cmp_status->ncomps == 0) | |
2613 | cmp_status->state = COMPOSING_CHAR; | |
2614 | else if (cmp_status->ncomps > 0) | |
2615 | { | |
2616 | if (cmp_status->method == COMPOSITION_WITH_RULE_ALTCHARS) | |
2617 | cmp_status->state = COMPOSING_COMPONENT_RULE; | |
2618 | } | |
2619 | else | |
2620 | EMACS_MULE_MAYBE_FINISH_COMPOSITION (); | |
df7492f9 | 2621 | } |
e951386e KH |
2622 | else /* COMPOSING_COMPONENT_RULE */ |
2623 | { | |
2624 | int rule; | |
2625 | ||
2626 | DECODE_EMACS_MULE_COMPOSITION_RULE_21 (c, rule); | |
2627 | if (rule < 0) | |
2628 | goto invalid_code; | |
2629 | *charbuf++ = -2; | |
2630 | *charbuf++ = rule; | |
2631 | cmp_status->length += 2; | |
2632 | cmp_status->ncomps--; | |
2633 | if (cmp_status->ncomps > 0) | |
2634 | cmp_status->state = COMPOSING_COMPONENT_CHAR; | |
2635 | else | |
2636 | EMACS_MULE_MAYBE_FINISH_COMPOSITION (); | |
2637 | } | |
2638 | continue; | |
2639 | ||
2640 | retry: | |
2641 | src = src_base; | |
2642 | consumed_chars = consumed_chars_base; | |
df7492f9 KH |
2643 | continue; |
2644 | ||
2645 | invalid_code: | |
e951386e | 2646 | EMACS_MULE_MAYBE_FINISH_COMPOSITION (); |
df7492f9 KH |
2647 | src = src_base; |
2648 | consumed_chars = consumed_chars_base; | |
2649 | ONE_MORE_BYTE (c); | |
2650 | *charbuf++ = ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); | |
ff0dacd7 | 2651 | char_offset++; |
df7492f9 KH |
2652 | coding->errors++; |
2653 | } | |
2654 | ||
2655 | no_more_source: | |
e951386e KH |
2656 | if (cmp_status->state != COMPOSING_NO) |
2657 | { | |
2658 | if (coding->mode & CODING_MODE_LAST_BLOCK) | |
2659 | EMACS_MULE_MAYBE_FINISH_COMPOSITION (); | |
2660 | else | |
2661 | { | |
2662 | int i; | |
2663 | ||
2664 | charbuf -= cmp_status->length; | |
2665 | for (i = 0; i < cmp_status->length; i++) | |
2666 | cmp_status->carryover[i] = charbuf[i]; | |
2667 | } | |
2668 | } | |
ff0dacd7 | 2669 | if (last_id != charset_ascii) |
69a80ea3 | 2670 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
2671 | coding->consumed_char += consumed_chars_base; |
2672 | coding->consumed = src_base - coding->source; | |
2673 | coding->charbuf_used = charbuf - coding->charbuf; | |
2674 | } | |
2675 | ||
2676 | ||
2677 | #define EMACS_MULE_LEADING_CODES(id, codes) \ | |
2678 | do { \ | |
2679 | if (id < 0xA0) \ | |
2680 | codes[0] = id, codes[1] = 0; \ | |
2681 | else if (id < 0xE0) \ | |
2682 | codes[0] = 0x9A, codes[1] = id; \ | |
2683 | else if (id < 0xF0) \ | |
2684 | codes[0] = 0x9B, codes[1] = id; \ | |
2685 | else if (id < 0xF5) \ | |
2686 | codes[0] = 0x9C, codes[1] = id; \ | |
2687 | else \ | |
2688 | codes[0] = 0x9D, codes[1] = id; \ | |
2689 | } while (0); | |
2690 | ||
aa72b389 | 2691 | |
df7492f9 KH |
2692 | static int |
2693 | encode_coding_emacs_mule (coding) | |
2694 | struct coding_system *coding; | |
2695 | { | |
2696 | int multibytep = coding->dst_multibyte; | |
2697 | int *charbuf = coding->charbuf; | |
2698 | int *charbuf_end = charbuf + coding->charbuf_used; | |
2699 | unsigned char *dst = coding->destination + coding->produced; | |
2700 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
2701 | int safe_room = 8; | |
df7492f9 | 2702 | int produced_chars = 0; |
24a73b0a | 2703 | Lisp_Object attrs, charset_list; |
df7492f9 | 2704 | int c; |
ff0dacd7 | 2705 | int preferred_charset_id = -1; |
df7492f9 | 2706 | |
24a73b0a | 2707 | CODING_GET_INFO (coding, attrs, charset_list); |
eccb6815 KH |
2708 | if (! EQ (charset_list, Vemacs_mule_charset_list)) |
2709 | { | |
2710 | CODING_ATTR_CHARSET_LIST (attrs) | |
2711 | = charset_list = Vemacs_mule_charset_list; | |
2712 | } | |
df7492f9 KH |
2713 | |
2714 | while (charbuf < charbuf_end) | |
2715 | { | |
2716 | ASSURE_DESTINATION (safe_room); | |
2717 | c = *charbuf++; | |
ff0dacd7 KH |
2718 | |
2719 | if (c < 0) | |
2720 | { | |
2721 | /* Handle an annotation. */ | |
2722 | switch (*charbuf) | |
2723 | { | |
2724 | case CODING_ANNOTATE_COMPOSITION_MASK: | |
2725 | /* Not yet implemented. */ | |
2726 | break; | |
2727 | case CODING_ANNOTATE_CHARSET_MASK: | |
2728 | preferred_charset_id = charbuf[3]; | |
2729 | if (preferred_charset_id >= 0 | |
2730 | && NILP (Fmemq (make_number (preferred_charset_id), | |
2731 | charset_list))) | |
2732 | preferred_charset_id = -1; | |
2733 | break; | |
2734 | default: | |
2735 | abort (); | |
2736 | } | |
2737 | charbuf += -c - 1; | |
2738 | continue; | |
2739 | } | |
2740 | ||
df7492f9 KH |
2741 | if (ASCII_CHAR_P (c)) |
2742 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d KH |
2743 | else if (CHAR_BYTE8_P (c)) |
2744 | { | |
2745 | c = CHAR_TO_BYTE8 (c); | |
2746 | EMIT_ONE_BYTE (c); | |
2747 | } | |
df7492f9 | 2748 | else |
aa72b389 | 2749 | { |
df7492f9 KH |
2750 | struct charset *charset; |
2751 | unsigned code; | |
2752 | int dimension; | |
2753 | int emacs_mule_id; | |
2754 | unsigned char leading_codes[2]; | |
2755 | ||
ff0dacd7 KH |
2756 | if (preferred_charset_id >= 0) |
2757 | { | |
2758 | charset = CHARSET_FROM_ID (preferred_charset_id); | |
905ca9d2 KH |
2759 | if (CHAR_CHARSET_P (c, charset)) |
2760 | code = ENCODE_CHAR (charset, c); | |
2761 | else | |
2762 | charset = char_charset (c, charset_list, &code); | |
ff0dacd7 KH |
2763 | } |
2764 | else | |
2765 | charset = char_charset (c, charset_list, &code); | |
df7492f9 KH |
2766 | if (! charset) |
2767 | { | |
2768 | c = coding->default_char; | |
2769 | if (ASCII_CHAR_P (c)) | |
2770 | { | |
2771 | EMIT_ONE_ASCII_BYTE (c); | |
2772 | continue; | |
2773 | } | |
2774 | charset = char_charset (c, charset_list, &code); | |
2775 | } | |
2776 | dimension = CHARSET_DIMENSION (charset); | |
2777 | emacs_mule_id = CHARSET_EMACS_MULE_ID (charset); | |
2778 | EMACS_MULE_LEADING_CODES (emacs_mule_id, leading_codes); | |
2779 | EMIT_ONE_BYTE (leading_codes[0]); | |
2780 | if (leading_codes[1]) | |
2781 | EMIT_ONE_BYTE (leading_codes[1]); | |
2782 | if (dimension == 1) | |
1fa663f9 | 2783 | EMIT_ONE_BYTE (code | 0x80); |
aa72b389 | 2784 | else |
df7492f9 | 2785 | { |
1fa663f9 | 2786 | code |= 0x8080; |
df7492f9 KH |
2787 | EMIT_ONE_BYTE (code >> 8); |
2788 | EMIT_ONE_BYTE (code & 0xFF); | |
2789 | } | |
aa72b389 | 2790 | } |
aa72b389 | 2791 | } |
065e3595 | 2792 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
2793 | coding->produced_char += produced_chars; |
2794 | coding->produced = dst - coding->destination; | |
2795 | return 0; | |
aa72b389 | 2796 | } |
b73bfc1c | 2797 | |
4ed46869 | 2798 | \f |
df7492f9 | 2799 | /*** 7. ISO2022 handlers ***/ |
4ed46869 KH |
2800 | |
2801 | /* The following note describes the coding system ISO2022 briefly. | |
39787efd | 2802 | Since the intention of this note is to help understand the |
5a936b46 | 2803 | functions in this file, some parts are NOT ACCURATE or are OVERLY |
39787efd | 2804 | SIMPLIFIED. For thorough understanding, please refer to the |
5a936b46 | 2805 | original document of ISO2022. This is equivalent to the standard |
cfb43547 | 2806 | ECMA-35, obtainable from <URL:http://www.ecma.ch/> (*). |
4ed46869 KH |
2807 | |
2808 | ISO2022 provides many mechanisms to encode several character sets | |
cfb43547 | 2809 | in 7-bit and 8-bit environments. For 7-bit environments, all text |
39787efd KH |
2810 | is encoded using bytes less than 128. This may make the encoded |
2811 | text a little bit longer, but the text passes more easily through | |
cfb43547 | 2812 | several types of gateway, some of which strip off the MSB (Most |
8ca3766a | 2813 | Significant Bit). |
b73bfc1c | 2814 | |
cfb43547 DL |
2815 | There are two kinds of character sets: control character sets and |
2816 | graphic character sets. The former contain control characters such | |
4ed46869 | 2817 | as `newline' and `escape' to provide control functions (control |
39787efd | 2818 | functions are also provided by escape sequences). The latter |
cfb43547 | 2819 | contain graphic characters such as 'A' and '-'. Emacs recognizes |
4ed46869 KH |
2820 | two control character sets and many graphic character sets. |
2821 | ||
2822 | Graphic character sets are classified into one of the following | |
39787efd KH |
2823 | four classes, according to the number of bytes (DIMENSION) and |
2824 | number of characters in one dimension (CHARS) of the set: | |
2825 | - DIMENSION1_CHARS94 | |
2826 | - DIMENSION1_CHARS96 | |
2827 | - DIMENSION2_CHARS94 | |
2828 | - DIMENSION2_CHARS96 | |
2829 | ||
2830 | In addition, each character set is assigned an identification tag, | |
cfb43547 | 2831 | unique for each set, called the "final character" (denoted as <F> |
39787efd KH |
2832 | hereafter). The <F> of each character set is decided by ECMA(*) |
2833 | when it is registered in ISO. The code range of <F> is 0x30..0x7F | |
2834 | (0x30..0x3F are for private use only). | |
4ed46869 KH |
2835 | |
2836 | Note (*): ECMA = European Computer Manufacturers Association | |
2837 | ||
cfb43547 | 2838 | Here are examples of graphic character sets [NAME(<F>)]: |
4ed46869 KH |
2839 | o DIMENSION1_CHARS94 -- ASCII('B'), right-half-of-JISX0201('I'), ... |
2840 | o DIMENSION1_CHARS96 -- right-half-of-ISO8859-1('A'), ... | |
2841 | o DIMENSION2_CHARS94 -- GB2312('A'), JISX0208('B'), ... | |
2842 | o DIMENSION2_CHARS96 -- none for the moment | |
2843 | ||
39787efd | 2844 | A code area (1 byte=8 bits) is divided into 4 areas, C0, GL, C1, and GR. |
4ed46869 KH |
2845 | C0 [0x00..0x1F] -- control character plane 0 |
2846 | GL [0x20..0x7F] -- graphic character plane 0 | |
2847 | C1 [0x80..0x9F] -- control character plane 1 | |
2848 | GR [0xA0..0xFF] -- graphic character plane 1 | |
2849 | ||
2850 | A control character set is directly designated and invoked to C0 or | |
39787efd KH |
2851 | C1 by an escape sequence. The most common case is that: |
2852 | - ISO646's control character set is designated/invoked to C0, and | |
2853 | - ISO6429's control character set is designated/invoked to C1, | |
2854 | and usually these designations/invocations are omitted in encoded | |
2855 | text. In a 7-bit environment, only C0 can be used, and a control | |
2856 | character for C1 is encoded by an appropriate escape sequence to | |
2857 | fit into the environment. All control characters for C1 are | |
2858 | defined to have corresponding escape sequences. | |
4ed46869 KH |
2859 | |
2860 | A graphic character set is at first designated to one of four | |
2861 | graphic registers (G0 through G3), then these graphic registers are | |
2862 | invoked to GL or GR. These designations and invocations can be | |
2863 | done independently. The most common case is that G0 is invoked to | |
39787efd KH |
2864 | GL, G1 is invoked to GR, and ASCII is designated to G0. Usually |
2865 | these invocations and designations are omitted in encoded text. | |
2866 | In a 7-bit environment, only GL can be used. | |
4ed46869 | 2867 | |
39787efd KH |
2868 | When a graphic character set of CHARS94 is invoked to GL, codes |
2869 | 0x20 and 0x7F of the GL area work as control characters SPACE and | |
2870 | DEL respectively, and codes 0xA0 and 0xFF of the GR area should not | |
2871 | be used. | |
4ed46869 KH |
2872 | |
2873 | There are two ways of invocation: locking-shift and single-shift. | |
2874 | With locking-shift, the invocation lasts until the next different | |
39787efd KH |
2875 | invocation, whereas with single-shift, the invocation affects the |
2876 | following character only and doesn't affect the locking-shift | |
2877 | state. Invocations are done by the following control characters or | |
2878 | escape sequences: | |
4ed46869 KH |
2879 | |
2880 | ---------------------------------------------------------------------- | |
39787efd | 2881 | abbrev function cntrl escape seq description |
4ed46869 | 2882 | ---------------------------------------------------------------------- |
39787efd KH |
2883 | SI/LS0 (shift-in) 0x0F none invoke G0 into GL |
2884 | SO/LS1 (shift-out) 0x0E none invoke G1 into GL | |
2885 | LS2 (locking-shift-2) none ESC 'n' invoke G2 into GL | |
2886 | LS3 (locking-shift-3) none ESC 'o' invoke G3 into GL | |
2887 | LS1R (locking-shift-1 right) none ESC '~' invoke G1 into GR (*) | |
2888 | LS2R (locking-shift-2 right) none ESC '}' invoke G2 into GR (*) | |
2889 | LS3R (locking-shift 3 right) none ESC '|' invoke G3 into GR (*) | |
2890 | SS2 (single-shift-2) 0x8E ESC 'N' invoke G2 for one char | |
2891 | SS3 (single-shift-3) 0x8F ESC 'O' invoke G3 for one char | |
4ed46869 | 2892 | ---------------------------------------------------------------------- |
39787efd KH |
2893 | (*) These are not used by any known coding system. |
2894 | ||
2895 | Control characters for these functions are defined by macros | |
2896 | ISO_CODE_XXX in `coding.h'. | |
4ed46869 | 2897 | |
39787efd | 2898 | Designations are done by the following escape sequences: |
4ed46869 KH |
2899 | ---------------------------------------------------------------------- |
2900 | escape sequence description | |
2901 | ---------------------------------------------------------------------- | |
2902 | ESC '(' <F> designate DIMENSION1_CHARS94<F> to G0 | |
2903 | ESC ')' <F> designate DIMENSION1_CHARS94<F> to G1 | |
2904 | ESC '*' <F> designate DIMENSION1_CHARS94<F> to G2 | |
2905 | ESC '+' <F> designate DIMENSION1_CHARS94<F> to G3 | |
2906 | ESC ',' <F> designate DIMENSION1_CHARS96<F> to G0 (*) | |
2907 | ESC '-' <F> designate DIMENSION1_CHARS96<F> to G1 | |
2908 | ESC '.' <F> designate DIMENSION1_CHARS96<F> to G2 | |
2909 | ESC '/' <F> designate DIMENSION1_CHARS96<F> to G3 | |
2910 | ESC '$' '(' <F> designate DIMENSION2_CHARS94<F> to G0 (**) | |
2911 | ESC '$' ')' <F> designate DIMENSION2_CHARS94<F> to G1 | |
2912 | ESC '$' '*' <F> designate DIMENSION2_CHARS94<F> to G2 | |
2913 | ESC '$' '+' <F> designate DIMENSION2_CHARS94<F> to G3 | |
2914 | ESC '$' ',' <F> designate DIMENSION2_CHARS96<F> to G0 (*) | |
2915 | ESC '$' '-' <F> designate DIMENSION2_CHARS96<F> to G1 | |
2916 | ESC '$' '.' <F> designate DIMENSION2_CHARS96<F> to G2 | |
2917 | ESC '$' '/' <F> designate DIMENSION2_CHARS96<F> to G3 | |
2918 | ---------------------------------------------------------------------- | |
2919 | ||
2920 | In this list, "DIMENSION1_CHARS94<F>" means a graphic character set | |
39787efd | 2921 | of dimension 1, chars 94, and final character <F>, etc... |
4ed46869 KH |
2922 | |
2923 | Note (*): Although these designations are not allowed in ISO2022, | |
2924 | Emacs accepts them on decoding, and produces them on encoding | |
39787efd | 2925 | CHARS96 character sets in a coding system which is characterized as |
4ed46869 KH |
2926 | 7-bit environment, non-locking-shift, and non-single-shift. |
2927 | ||
2928 | Note (**): If <F> is '@', 'A', or 'B', the intermediate character | |
df7492f9 | 2929 | '(' must be omitted. We refer to this as "short-form" hereafter. |
4ed46869 | 2930 | |
cfb43547 | 2931 | Now you may notice that there are a lot of ways of encoding the |
39787efd KH |
2932 | same multilingual text in ISO2022. Actually, there exist many |
2933 | coding systems such as Compound Text (used in X11's inter client | |
8ca3766a DL |
2934 | communication, ISO-2022-JP (used in Japanese Internet), ISO-2022-KR |
2935 | (used in Korean Internet), EUC (Extended UNIX Code, used in Asian | |
4ed46869 KH |
2936 | localized platforms), and all of these are variants of ISO2022. |
2937 | ||
2938 | In addition to the above, Emacs handles two more kinds of escape | |
2939 | sequences: ISO6429's direction specification and Emacs' private | |
2940 | sequence for specifying character composition. | |
2941 | ||
39787efd | 2942 | ISO6429's direction specification takes the following form: |
4ed46869 KH |
2943 | o CSI ']' -- end of the current direction |
2944 | o CSI '0' ']' -- end of the current direction | |
2945 | o CSI '1' ']' -- start of left-to-right text | |
2946 | o CSI '2' ']' -- start of right-to-left text | |
2947 | The control character CSI (0x9B: control sequence introducer) is | |
39787efd KH |
2948 | abbreviated to the escape sequence ESC '[' in a 7-bit environment. |
2949 | ||
2950 | Character composition specification takes the following form: | |
ec6d2bb8 KH |
2951 | o ESC '0' -- start relative composition |
2952 | o ESC '1' -- end composition | |
2953 | o ESC '2' -- start rule-base composition (*) | |
2954 | o ESC '3' -- start relative composition with alternate chars (**) | |
2955 | o ESC '4' -- start rule-base composition with alternate chars (**) | |
b73bfc1c | 2956 | Since these are not standard escape sequences of any ISO standard, |
cfb43547 | 2957 | the use of them with these meanings is restricted to Emacs only. |
ec6d2bb8 | 2958 | |
5a936b46 DL |
2959 | (*) This form is used only in Emacs 20.7 and older versions, |
2960 | but newer versions can safely decode it. | |
cfb43547 | 2961 | (**) This form is used only in Emacs 21.1 and newer versions, |
5a936b46 | 2962 | and older versions can't decode it. |
ec6d2bb8 | 2963 | |
cfb43547 | 2964 | Here's a list of example usages of these composition escape |
b73bfc1c | 2965 | sequences (categorized by `enum composition_method'). |
ec6d2bb8 | 2966 | |
b73bfc1c | 2967 | COMPOSITION_RELATIVE: |
ec6d2bb8 | 2968 | ESC 0 CHAR [ CHAR ] ESC 1 |
8ca3766a | 2969 | COMPOSITION_WITH_RULE: |
ec6d2bb8 | 2970 | ESC 2 CHAR [ RULE CHAR ] ESC 1 |
b73bfc1c | 2971 | COMPOSITION_WITH_ALTCHARS: |
ec6d2bb8 | 2972 | ESC 3 ALTCHAR [ ALTCHAR ] ESC 0 CHAR [ CHAR ] ESC 1 |
b73bfc1c | 2973 | COMPOSITION_WITH_RULE_ALTCHARS: |
ec6d2bb8 | 2974 | ESC 4 ALTCHAR [ RULE ALTCHAR ] ESC 0 CHAR [ CHAR ] ESC 1 */ |
4ed46869 KH |
2975 | |
2976 | enum iso_code_class_type iso_code_class[256]; | |
2977 | ||
df7492f9 KH |
2978 | #define SAFE_CHARSET_P(coding, id) \ |
2979 | ((id) <= (coding)->max_charset_id \ | |
1b3b981b | 2980 | && (coding)->safe_charsets[id] != 255) |
df7492f9 KH |
2981 | |
2982 | ||
2983 | #define SHIFT_OUT_OK(category) \ | |
2984 | (CODING_ISO_INITIAL (&coding_categories[category], 1) >= 0) | |
2985 | ||
2986 | static void | |
f0064e1f DL |
2987 | setup_iso_safe_charsets (attrs) |
2988 | Lisp_Object attrs; | |
df7492f9 KH |
2989 | { |
2990 | Lisp_Object charset_list, safe_charsets; | |
2991 | Lisp_Object request; | |
2992 | Lisp_Object reg_usage; | |
2993 | Lisp_Object tail; | |
2994 | int reg94, reg96; | |
2995 | int flags = XINT (AREF (attrs, coding_attr_iso_flags)); | |
2996 | int max_charset_id; | |
2997 | ||
2998 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
2999 | if ((flags & CODING_ISO_FLAG_FULL_SUPPORT) | |
3000 | && ! EQ (charset_list, Viso_2022_charset_list)) | |
3001 | { | |
3002 | CODING_ATTR_CHARSET_LIST (attrs) | |
3003 | = charset_list = Viso_2022_charset_list; | |
3004 | ASET (attrs, coding_attr_safe_charsets, Qnil); | |
3005 | } | |
3006 | ||
3007 | if (STRINGP (AREF (attrs, coding_attr_safe_charsets))) | |
3008 | return; | |
3009 | ||
3010 | max_charset_id = 0; | |
3011 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
3012 | { | |
3013 | int id = XINT (XCAR (tail)); | |
3014 | if (max_charset_id < id) | |
3015 | max_charset_id = id; | |
3016 | } | |
d46c5b12 | 3017 | |
1b3b981b AS |
3018 | safe_charsets = make_uninit_string (max_charset_id + 1); |
3019 | memset (SDATA (safe_charsets), 255, max_charset_id + 1); | |
df7492f9 KH |
3020 | request = AREF (attrs, coding_attr_iso_request); |
3021 | reg_usage = AREF (attrs, coding_attr_iso_usage); | |
3022 | reg94 = XINT (XCAR (reg_usage)); | |
3023 | reg96 = XINT (XCDR (reg_usage)); | |
3024 | ||
3025 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
3026 | { | |
3027 | Lisp_Object id; | |
3028 | Lisp_Object reg; | |
3029 | struct charset *charset; | |
3030 | ||
3031 | id = XCAR (tail); | |
3032 | charset = CHARSET_FROM_ID (XINT (id)); | |
bf16eb23 | 3033 | reg = Fcdr (Fassq (id, request)); |
df7492f9 | 3034 | if (! NILP (reg)) |
8f924df7 | 3035 | SSET (safe_charsets, XINT (id), XINT (reg)); |
df7492f9 KH |
3036 | else if (charset->iso_chars_96) |
3037 | { | |
3038 | if (reg96 < 4) | |
8f924df7 | 3039 | SSET (safe_charsets, XINT (id), reg96); |
df7492f9 KH |
3040 | } |
3041 | else | |
3042 | { | |
3043 | if (reg94 < 4) | |
8f924df7 | 3044 | SSET (safe_charsets, XINT (id), reg94); |
df7492f9 KH |
3045 | } |
3046 | } | |
3047 | ASET (attrs, coding_attr_safe_charsets, safe_charsets); | |
3048 | } | |
d46c5b12 | 3049 | |
b6871cc7 | 3050 | |
4ed46869 | 3051 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". |
ff0dacd7 KH |
3052 | Check if a text is encoded in one of ISO-2022 based codig systems. |
3053 | If it is, return 1, else return 0. */ | |
4ed46869 | 3054 | |
0a28aafb | 3055 | static int |
ff0dacd7 | 3056 | detect_coding_iso_2022 (coding, detect_info) |
df7492f9 | 3057 | struct coding_system *coding; |
ff0dacd7 | 3058 | struct coding_detection_info *detect_info; |
4ed46869 | 3059 | { |
8f924df7 KH |
3060 | const unsigned char *src = coding->source, *src_base = src; |
3061 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
df7492f9 | 3062 | int multibytep = coding->src_multibyte; |
ff0dacd7 | 3063 | int single_shifting = 0; |
df7492f9 KH |
3064 | int id; |
3065 | int c, c1; | |
3066 | int consumed_chars = 0; | |
3067 | int i; | |
ff0dacd7 KH |
3068 | int rejected = 0; |
3069 | int found = 0; | |
cee53ed4 | 3070 | int composition_count = -1; |
ff0dacd7 KH |
3071 | |
3072 | detect_info->checked |= CATEGORY_MASK_ISO; | |
df7492f9 KH |
3073 | |
3074 | for (i = coding_category_iso_7; i <= coding_category_iso_8_else; i++) | |
3075 | { | |
3076 | struct coding_system *this = &(coding_categories[i]); | |
3077 | Lisp_Object attrs, val; | |
3078 | ||
c6b278e7 KH |
3079 | if (this->id < 0) |
3080 | continue; | |
df7492f9 KH |
3081 | attrs = CODING_ID_ATTRS (this->id); |
3082 | if (CODING_ISO_FLAGS (this) & CODING_ISO_FLAG_FULL_SUPPORT | |
1b3b981b | 3083 | && ! EQ (CODING_ATTR_CHARSET_LIST (attrs), Viso_2022_charset_list)) |
df7492f9 KH |
3084 | setup_iso_safe_charsets (attrs); |
3085 | val = CODING_ATTR_SAFE_CHARSETS (attrs); | |
8f924df7 | 3086 | this->max_charset_id = SCHARS (val) - 1; |
1b3b981b | 3087 | this->safe_charsets = SDATA (val); |
df7492f9 KH |
3088 | } |
3089 | ||
3090 | /* A coding system of this category is always ASCII compatible. */ | |
3091 | src += coding->head_ascii; | |
3f003981 | 3092 | |
ff0dacd7 | 3093 | while (rejected != CATEGORY_MASK_ISO) |
4ed46869 | 3094 | { |
065e3595 | 3095 | src_base = src; |
df7492f9 | 3096 | ONE_MORE_BYTE (c); |
4ed46869 KH |
3097 | switch (c) |
3098 | { | |
3099 | case ISO_CODE_ESC: | |
74383408 KH |
3100 | if (inhibit_iso_escape_detection) |
3101 | break; | |
f46869e4 | 3102 | single_shifting = 0; |
df7492f9 | 3103 | ONE_MORE_BYTE (c); |
d46c5b12 | 3104 | if (c >= '(' && c <= '/') |
4ed46869 | 3105 | { |
bf9cdd4e | 3106 | /* Designation sequence for a charset of dimension 1. */ |
df7492f9 | 3107 | ONE_MORE_BYTE (c1); |
d46c5b12 | 3108 | if (c1 < ' ' || c1 >= 0x80 |
df7492f9 | 3109 | || (id = iso_charset_table[0][c >= ','][c1]) < 0) |
d46c5b12 KH |
3110 | /* Invalid designation sequence. Just ignore. */ |
3111 | break; | |
bf9cdd4e KH |
3112 | } |
3113 | else if (c == '$') | |
3114 | { | |
3115 | /* Designation sequence for a charset of dimension 2. */ | |
df7492f9 | 3116 | ONE_MORE_BYTE (c); |
bf9cdd4e KH |
3117 | if (c >= '@' && c <= 'B') |
3118 | /* Designation for JISX0208.1978, GB2312, or JISX0208. */ | |
ff0dacd7 | 3119 | id = iso_charset_table[1][0][c]; |
bf9cdd4e | 3120 | else if (c >= '(' && c <= '/') |
bcf26d6a | 3121 | { |
df7492f9 | 3122 | ONE_MORE_BYTE (c1); |
d46c5b12 | 3123 | if (c1 < ' ' || c1 >= 0x80 |
df7492f9 | 3124 | || (id = iso_charset_table[1][c >= ','][c1]) < 0) |
d46c5b12 KH |
3125 | /* Invalid designation sequence. Just ignore. */ |
3126 | break; | |
bcf26d6a | 3127 | } |
bf9cdd4e | 3128 | else |
ff0dacd7 | 3129 | /* Invalid designation sequence. Just ignore it. */ |
d46c5b12 KH |
3130 | break; |
3131 | } | |
ae9ff118 | 3132 | else if (c == 'N' || c == 'O') |
d46c5b12 | 3133 | { |
ae9ff118 | 3134 | /* ESC <Fe> for SS2 or SS3. */ |
ff0dacd7 KH |
3135 | single_shifting = 1; |
3136 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_8BIT; | |
d46c5b12 | 3137 | break; |
4ed46869 | 3138 | } |
cee53ed4 KH |
3139 | else if (c == '1') |
3140 | { | |
3141 | /* End of composition. */ | |
3142 | if (composition_count < 0 | |
3143 | || composition_count > MAX_COMPOSITION_COMPONENTS) | |
3144 | /* Invalid */ | |
3145 | break; | |
3146 | composition_count = -1; | |
3147 | found |= CATEGORY_MASK_ISO; | |
3148 | } | |
ec6d2bb8 KH |
3149 | else if (c >= '0' && c <= '4') |
3150 | { | |
3151 | /* ESC <Fp> for start/end composition. */ | |
cee53ed4 | 3152 | composition_count = 0; |
ec6d2bb8 KH |
3153 | break; |
3154 | } | |
bf9cdd4e | 3155 | else |
df7492f9 | 3156 | { |
ff0dacd7 | 3157 | /* Invalid escape sequence. Just ignore it. */ |
df7492f9 KH |
3158 | break; |
3159 | } | |
d46c5b12 KH |
3160 | |
3161 | /* We found a valid designation sequence for CHARSET. */ | |
ff0dacd7 | 3162 | rejected |= CATEGORY_MASK_ISO_8BIT; |
df7492f9 KH |
3163 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_7], |
3164 | id)) | |
ff0dacd7 | 3165 | found |= CATEGORY_MASK_ISO_7; |
d46c5b12 | 3166 | else |
ff0dacd7 | 3167 | rejected |= CATEGORY_MASK_ISO_7; |
df7492f9 KH |
3168 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_7_tight], |
3169 | id)) | |
ff0dacd7 | 3170 | found |= CATEGORY_MASK_ISO_7_TIGHT; |
d46c5b12 | 3171 | else |
ff0dacd7 | 3172 | rejected |= CATEGORY_MASK_ISO_7_TIGHT; |
df7492f9 KH |
3173 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_7_else], |
3174 | id)) | |
ff0dacd7 | 3175 | found |= CATEGORY_MASK_ISO_7_ELSE; |
ae9ff118 | 3176 | else |
ff0dacd7 | 3177 | rejected |= CATEGORY_MASK_ISO_7_ELSE; |
df7492f9 KH |
3178 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_8_else], |
3179 | id)) | |
ff0dacd7 | 3180 | found |= CATEGORY_MASK_ISO_8_ELSE; |
ae9ff118 | 3181 | else |
ff0dacd7 | 3182 | rejected |= CATEGORY_MASK_ISO_8_ELSE; |
4ed46869 KH |
3183 | break; |
3184 | ||
4ed46869 | 3185 | case ISO_CODE_SO: |
d46c5b12 | 3186 | case ISO_CODE_SI: |
ff0dacd7 | 3187 | /* Locking shift out/in. */ |
74383408 KH |
3188 | if (inhibit_iso_escape_detection) |
3189 | break; | |
f46869e4 | 3190 | single_shifting = 0; |
ff0dacd7 | 3191 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_8BIT; |
d46c5b12 KH |
3192 | break; |
3193 | ||
4ed46869 | 3194 | case ISO_CODE_CSI: |
ff0dacd7 | 3195 | /* Control sequence introducer. */ |
f46869e4 | 3196 | single_shifting = 0; |
ff0dacd7 KH |
3197 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_7_ELSE; |
3198 | found |= CATEGORY_MASK_ISO_8_ELSE; | |
3199 | goto check_extra_latin; | |
3200 | ||
4ed46869 KH |
3201 | case ISO_CODE_SS2: |
3202 | case ISO_CODE_SS3: | |
ff0dacd7 KH |
3203 | /* Single shift. */ |
3204 | if (inhibit_iso_escape_detection) | |
3205 | break; | |
75e2a253 | 3206 | single_shifting = 0; |
ff0dacd7 KH |
3207 | rejected |= CATEGORY_MASK_ISO_7BIT; |
3208 | if (CODING_ISO_FLAGS (&coding_categories[coding_category_iso_8_1]) | |
3209 | & CODING_ISO_FLAG_SINGLE_SHIFT) | |
75e2a253 | 3210 | found |= CATEGORY_MASK_ISO_8_1, single_shifting = 1; |
ff0dacd7 KH |
3211 | if (CODING_ISO_FLAGS (&coding_categories[coding_category_iso_8_2]) |
3212 | & CODING_ISO_FLAG_SINGLE_SHIFT) | |
75e2a253 KH |
3213 | found |= CATEGORY_MASK_ISO_8_2, single_shifting = 1; |
3214 | if (single_shifting) | |
3215 | break; | |
ff0dacd7 | 3216 | goto check_extra_latin; |
4ed46869 KH |
3217 | |
3218 | default: | |
065e3595 KH |
3219 | if (c < 0) |
3220 | continue; | |
4ed46869 | 3221 | if (c < 0x80) |
f46869e4 | 3222 | { |
cee53ed4 KH |
3223 | if (composition_count >= 0) |
3224 | composition_count++; | |
f46869e4 KH |
3225 | single_shifting = 0; |
3226 | break; | |
3227 | } | |
ff0dacd7 | 3228 | if (c >= 0xA0) |
c4825358 | 3229 | { |
ff0dacd7 KH |
3230 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_7_ELSE; |
3231 | found |= CATEGORY_MASK_ISO_8_1; | |
f46869e4 | 3232 | /* Check the length of succeeding codes of the range |
ff0dacd7 KH |
3233 | 0xA0..0FF. If the byte length is even, we include |
3234 | CATEGORY_MASK_ISO_8_2 in `found'. We can check this | |
3235 | only when we are not single shifting. */ | |
3236 | if (! single_shifting | |
3237 | && ! (rejected & CATEGORY_MASK_ISO_8_2)) | |
f46869e4 | 3238 | { |
e17de821 | 3239 | int i = 1; |
b73bfc1c KH |
3240 | while (src < src_end) |
3241 | { | |
df7492f9 | 3242 | ONE_MORE_BYTE (c); |
b73bfc1c KH |
3243 | if (c < 0xA0) |
3244 | break; | |
3245 | i++; | |
3246 | } | |
3247 | ||
3248 | if (i & 1 && src < src_end) | |
cee53ed4 KH |
3249 | { |
3250 | rejected |= CATEGORY_MASK_ISO_8_2; | |
3251 | if (composition_count >= 0) | |
3252 | composition_count += i; | |
3253 | } | |
f46869e4 | 3254 | else |
cee53ed4 KH |
3255 | { |
3256 | found |= CATEGORY_MASK_ISO_8_2; | |
3257 | if (composition_count >= 0) | |
3258 | composition_count += i / 2; | |
3259 | } | |
f46869e4 | 3260 | } |
ff0dacd7 | 3261 | break; |
4ed46869 | 3262 | } |
ff0dacd7 KH |
3263 | check_extra_latin: |
3264 | single_shifting = 0; | |
3265 | if (! VECTORP (Vlatin_extra_code_table) | |
3266 | || NILP (XVECTOR (Vlatin_extra_code_table)->contents[c])) | |
3267 | { | |
3268 | rejected = CATEGORY_MASK_ISO; | |
3269 | break; | |
3270 | } | |
3271 | if (CODING_ISO_FLAGS (&coding_categories[coding_category_iso_8_1]) | |
3272 | & CODING_ISO_FLAG_LATIN_EXTRA) | |
3273 | found |= CATEGORY_MASK_ISO_8_1; | |
3274 | else | |
3275 | rejected |= CATEGORY_MASK_ISO_8_1; | |
75e2a253 | 3276 | rejected |= CATEGORY_MASK_ISO_8_2; |
4ed46869 KH |
3277 | } |
3278 | } | |
ff0dacd7 KH |
3279 | detect_info->rejected |= CATEGORY_MASK_ISO; |
3280 | return 0; | |
4ed46869 | 3281 | |
df7492f9 | 3282 | no_more_source: |
ff0dacd7 KH |
3283 | detect_info->rejected |= rejected; |
3284 | detect_info->found |= (found & ~rejected); | |
df7492f9 | 3285 | return 1; |
4ed46869 | 3286 | } |
ec6d2bb8 | 3287 | |
4ed46869 | 3288 | |
134b9549 KH |
3289 | /* Set designation state into CODING. Set CHARS_96 to -1 if the |
3290 | escape sequence should be kept. */ | |
df7492f9 KH |
3291 | #define DECODE_DESIGNATION(reg, dim, chars_96, final) \ |
3292 | do { \ | |
3293 | int id, prev; \ | |
3294 | \ | |
3295 | if (final < '0' || final >= 128 \ | |
3296 | || ((id = ISO_CHARSET_TABLE (dim, chars_96, final)) < 0) \ | |
3297 | || !SAFE_CHARSET_P (coding, id)) \ | |
3298 | { \ | |
3299 | CODING_ISO_DESIGNATION (coding, reg) = -2; \ | |
134b9549 KH |
3300 | chars_96 = -1; \ |
3301 | break; \ | |
df7492f9 KH |
3302 | } \ |
3303 | prev = CODING_ISO_DESIGNATION (coding, reg); \ | |
bf16eb23 KH |
3304 | if (id == charset_jisx0201_roman) \ |
3305 | { \ | |
3306 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_ROMAN) \ | |
3307 | id = charset_ascii; \ | |
3308 | } \ | |
3309 | else if (id == charset_jisx0208_1978) \ | |
3310 | { \ | |
3311 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_OLDJIS) \ | |
3312 | id = charset_jisx0208; \ | |
3313 | } \ | |
df7492f9 KH |
3314 | CODING_ISO_DESIGNATION (coding, reg) = id; \ |
3315 | /* If there was an invalid designation to REG previously, and this \ | |
3316 | designation is ASCII to REG, we should keep this designation \ | |
3317 | sequence. */ \ | |
3318 | if (prev == -2 && id == charset_ascii) \ | |
134b9549 | 3319 | chars_96 = -1; \ |
4ed46869 KH |
3320 | } while (0) |
3321 | ||
d46c5b12 | 3322 | |
e951386e KH |
3323 | /* Handle these composition sequence (ALT: alternate char): |
3324 | ||
3325 | (1) relative composition: ESC 0 CHAR ... ESC 1 | |
3326 | (2) rulebase composition: ESC 2 CHAR RULE CHAR RULE ... CHAR ESC 1 | |
3327 | (3) altchar composition: ESC 3 ALT ... ALT ESC 0 CHAR ... ESC 1 | |
3328 | (4) alt&rule composition: ESC 4 ALT RULE ... ALT ESC 0 CHAR ... ESC 1 | |
3329 | ||
3330 | When the start sequence (ESC 0/2/3/4) is found, this annotation | |
3331 | header is produced. | |
3332 | ||
3333 | [ -LENGTH(==-5) CODING_ANNOTATE_COMPOSITION_MASK NCHARS(==0) 0 METHOD ] | |
3334 | ||
3335 | Then, upon reading CHAR or RULE (one or two bytes), these codes are | |
3336 | produced until the end sequence (ESC 1) is found: | |
3337 | ||
3338 | (1) CHAR ... CHAR | |
3339 | (2) CHAR -2 DECODED-RULE CHAR -2 DECODED-RULE ... CHAR | |
3340 | (3) ALT ... ALT -1 -1 CHAR ... CHAR | |
3341 | (4) ALT -2 DECODED-RULE ALT -2 DECODED-RULE ... ALT -1 -1 CHAR ... CHAR | |
3342 | ||
3343 | When the end sequence (ESC 1) is found, LENGTH and NCHARS in the | |
3344 | annotation header is updated as below: | |
3345 | ||
3346 | (1) LENGTH: unchanged, NCHARS: number of CHARs | |
3347 | (2) LENGTH: unchanged, NCHARS: number of CHARs | |
3348 | (3) LENGTH: += number of ALTs + 2, NCHARS: number of CHARs | |
3349 | (4) LENGTH: += number of ALTs * 3, NCHARS: number of CHARs | |
3350 | ||
3351 | If an error is found while composing, the annotation header is | |
3352 | changed to: | |
3353 | ||
3354 | [ ESC '0'/'2'/'3'/'4' -2 0 ] | |
3355 | ||
3356 | and the sequence [ -2 DECODED-RULE ] is changed to the original | |
3357 | byte sequence as below: | |
3358 | o the original byte sequence is B: [ B -1 ] | |
3359 | o the original byte sequence is B1 B2: [ B1 B2 ] | |
3360 | and the sequence [ -1 -1 ] is changed to the original byte | |
3361 | sequence: | |
3362 | [ ESC '0' ] | |
3363 | */ | |
3364 | ||
3365 | /* Decode a composition rule C1 and maybe one more byte from the | |
3366 | source, and set RULE to the encoded composition rule, NBYTES to the | |
3367 | length of the composition rule. If the rule is invalid, set RULE | |
3368 | to some negative value. */ | |
3369 | ||
3370 | #define DECODE_COMPOSITION_RULE(rule, nbytes) \ | |
3371 | do { \ | |
3372 | rule = c1 - 32; \ | |
3373 | if (rule < 0) \ | |
3374 | break; \ | |
3375 | if (rule < 81) /* old format (before ver.21) */ \ | |
3376 | { \ | |
3377 | int gref = (rule) / 9; \ | |
3378 | int nref = (rule) % 9; \ | |
3379 | if (gref == 4) gref = 10; \ | |
3380 | if (nref == 4) nref = 10; \ | |
3381 | rule = COMPOSITION_ENCODE_RULE (gref, nref); \ | |
3382 | nbytes = 1; \ | |
3383 | } \ | |
3384 | else /* new format (after ver.21) */ \ | |
3385 | { \ | |
3386 | int c; \ | |
3387 | \ | |
3388 | ONE_MORE_BYTE (c); \ | |
3389 | rule = COMPOSITION_ENCODE_RULE (rule - 81, c - 32); \ | |
3390 | if (rule >= 0) \ | |
3391 | rule += 0x100; /* to destinguish it from the old format */ \ | |
3392 | nbytes = 2; \ | |
3393 | } \ | |
3394 | } while (0) | |
3395 | ||
3396 | #define ENCODE_COMPOSITION_RULE(rule) \ | |
df7492f9 | 3397 | do { \ |
e951386e KH |
3398 | int gref = (rule % 0x100) / 12, nref = (rule % 0x100) % 12; \ |
3399 | \ | |
3400 | if (rule < 0x100) /* old format */ \ | |
df7492f9 | 3401 | { \ |
e951386e KH |
3402 | if (gref == 10) gref = 4; \ |
3403 | if (nref == 10) nref = 4; \ | |
3404 | charbuf[idx] = 32 + gref * 9 + nref; \ | |
3405 | charbuf[idx + 1] = -1; \ | |
3406 | new_chars++; \ | |
df7492f9 | 3407 | } \ |
e951386e | 3408 | else /* new format */ \ |
df7492f9 | 3409 | { \ |
e951386e KH |
3410 | charbuf[idx] = 32 + 81 + gref; \ |
3411 | charbuf[idx + 1] = 32 + nref; \ | |
3412 | new_chars += 2; \ | |
df7492f9 KH |
3413 | } \ |
3414 | } while (0) | |
3415 | ||
e951386e KH |
3416 | /* Finish the current composition as invalid. */ |
3417 | ||
3418 | static int finish_composition P_ ((int *, struct composition_status *)); | |
3419 | ||
3420 | static int | |
3421 | finish_composition (charbuf, cmp_status) | |
3422 | int *charbuf; | |
3423 | struct composition_status *cmp_status; | |
3424 | { | |
3425 | int idx = - cmp_status->length; | |
3426 | int new_chars; | |
3427 | ||
3428 | /* Recover the original ESC sequence */ | |
3429 | charbuf[idx++] = ISO_CODE_ESC; | |
3430 | charbuf[idx++] = (cmp_status->method == COMPOSITION_RELATIVE ? '0' | |
3431 | : cmp_status->method == COMPOSITION_WITH_RULE ? '2' | |
3432 | : cmp_status->method == COMPOSITION_WITH_ALTCHARS ? '3' | |
3433 | /* cmp_status->method == COMPOSITION_WITH_RULE_ALTCHARS */ | |
3434 | : '4'); | |
3435 | charbuf[idx++] = -2; | |
3436 | charbuf[idx++] = 0; | |
3437 | charbuf[idx++] = -1; | |
3438 | new_chars = cmp_status->nchars; | |
3439 | if (cmp_status->method >= COMPOSITION_WITH_RULE) | |
3440 | for (; idx < 0; idx++) | |
3441 | { | |
3442 | int elt = charbuf[idx]; | |
3443 | ||
3444 | if (elt == -2) | |
3445 | { | |
3446 | ENCODE_COMPOSITION_RULE (charbuf[idx + 1]); | |
3447 | idx++; | |
3448 | } | |
3449 | else if (elt == -1) | |
3450 | { | |
3451 | charbuf[idx++] = ISO_CODE_ESC; | |
3452 | charbuf[idx] = '0'; | |
3453 | new_chars += 2; | |
3454 | } | |
3455 | } | |
3456 | cmp_status->state = COMPOSING_NO; | |
3457 | return new_chars; | |
3458 | } | |
3459 | ||
3460 | /* If characers are under composition, finish the composition. */ | |
3461 | #define MAYBE_FINISH_COMPOSITION() \ | |
3462 | do { \ | |
3463 | if (cmp_status->state != COMPOSING_NO) \ | |
3464 | char_offset += finish_composition (charbuf, cmp_status); \ | |
3465 | } while (0) | |
d46c5b12 | 3466 | |
aa72b389 | 3467 | /* Handle composition start sequence ESC 0, ESC 2, ESC 3, or ESC 4. |
e951386e | 3468 | |
aa72b389 KH |
3469 | ESC 0 : relative composition : ESC 0 CHAR ... ESC 1 |
3470 | ESC 2 : rulebase composition : ESC 2 CHAR RULE CHAR RULE ... CHAR ESC 1 | |
df7492f9 KH |
3471 | ESC 3 : altchar composition : ESC 3 CHAR ... ESC 0 CHAR ... ESC 1 |
3472 | ESC 4 : alt&rule composition : ESC 4 CHAR RULE ... CHAR ESC 0 CHAR ... ESC 1 | |
ec6d2bb8 | 3473 | |
e951386e KH |
3474 | Produce this annotation sequence now: |
3475 | ||
3476 | [ -LENGTH(==-4) CODING_ANNOTATE_COMPOSITION_MASK NCHARS(==0) METHOD ] | |
3477 | */ | |
3478 | ||
3479 | #define DECODE_COMPOSITION_START(c1) \ | |
3480 | do { \ | |
3481 | if (c1 == '0' \ | |
3482 | && ((cmp_status->state == COMPOSING_COMPONENT_CHAR \ | |
3483 | && cmp_status->method == COMPOSITION_WITH_ALTCHARS) \ | |
3484 | || (cmp_status->state == COMPOSING_COMPONENT_RULE \ | |
3485 | && cmp_status->method == COMPOSITION_WITH_RULE_ALTCHARS))) \ | |
3486 | { \ | |
3487 | *charbuf++ = -1; \ | |
3488 | *charbuf++= -1; \ | |
3489 | cmp_status->state = COMPOSING_CHAR; \ | |
3490 | cmp_status->length += 2; \ | |
3491 | } \ | |
3492 | else \ | |
3493 | { \ | |
3494 | MAYBE_FINISH_COMPOSITION (); \ | |
3495 | cmp_status->method = (c1 == '0' ? COMPOSITION_RELATIVE \ | |
3496 | : c1 == '2' ? COMPOSITION_WITH_RULE \ | |
3497 | : c1 == '3' ? COMPOSITION_WITH_ALTCHARS \ | |
3498 | : COMPOSITION_WITH_RULE_ALTCHARS); \ | |
3499 | cmp_status->state \ | |
3500 | = (c1 <= '2' ? COMPOSING_CHAR : COMPOSING_COMPONENT_CHAR); \ | |
3501 | ADD_COMPOSITION_DATA (charbuf, 0, 0, cmp_status->method); \ | |
3502 | cmp_status->length = MAX_ANNOTATION_LENGTH; \ | |
3503 | cmp_status->nchars = cmp_status->ncomps = 0; \ | |
3504 | coding->annotated = 1; \ | |
3505 | } \ | |
ec6d2bb8 KH |
3506 | } while (0) |
3507 | ||
ec6d2bb8 | 3508 | |
e951386e | 3509 | /* Handle composition end sequence ESC 1. */ |
df7492f9 KH |
3510 | |
3511 | #define DECODE_COMPOSITION_END() \ | |
ec6d2bb8 | 3512 | do { \ |
e951386e KH |
3513 | if (cmp_status->nchars == 0 \ |
3514 | || ((cmp_status->state == COMPOSING_CHAR) \ | |
3515 | == (cmp_status->method == COMPOSITION_WITH_RULE))) \ | |
ec6d2bb8 | 3516 | { \ |
e951386e KH |
3517 | MAYBE_FINISH_COMPOSITION (); \ |
3518 | goto invalid_code; \ | |
ec6d2bb8 | 3519 | } \ |
e951386e KH |
3520 | if (cmp_status->method == COMPOSITION_WITH_ALTCHARS) \ |
3521 | charbuf[- cmp_status->length] -= cmp_status->ncomps + 2; \ | |
3522 | else if (cmp_status->method == COMPOSITION_WITH_RULE_ALTCHARS) \ | |
3523 | charbuf[- cmp_status->length] -= cmp_status->ncomps * 3; \ | |
3524 | charbuf[- cmp_status->length + 2] = cmp_status->nchars; \ | |
3525 | char_offset += cmp_status->nchars; \ | |
3526 | cmp_status->state = COMPOSING_NO; \ | |
ec6d2bb8 KH |
3527 | } while (0) |
3528 | ||
e951386e | 3529 | /* Store a composition rule RULE in charbuf, and update cmp_status. */ |
df7492f9 | 3530 | |
e951386e KH |
3531 | #define STORE_COMPOSITION_RULE(rule) \ |
3532 | do { \ | |
3533 | *charbuf++ = -2; \ | |
3534 | *charbuf++ = rule; \ | |
3535 | cmp_status->length += 2; \ | |
3536 | cmp_status->state--; \ | |
3537 | } while (0) | |
ec6d2bb8 | 3538 | |
e951386e KH |
3539 | /* Store a composed char or a component char C in charbuf, and update |
3540 | cmp_status. */ | |
3541 | ||
3542 | #define STORE_COMPOSITION_CHAR(c) \ | |
ec6d2bb8 | 3543 | do { \ |
e951386e KH |
3544 | *charbuf++ = (c); \ |
3545 | cmp_status->length++; \ | |
3546 | if (cmp_status->state == COMPOSING_CHAR) \ | |
3547 | cmp_status->nchars++; \ | |
df7492f9 | 3548 | else \ |
e951386e KH |
3549 | cmp_status->ncomps++; \ |
3550 | if (cmp_status->method == COMPOSITION_WITH_RULE \ | |
3551 | || (cmp_status->method == COMPOSITION_WITH_RULE_ALTCHARS \ | |
3552 | && cmp_status->state == COMPOSING_COMPONENT_CHAR)) \ | |
3553 | cmp_status->state++; \ | |
ec6d2bb8 | 3554 | } while (0) |
88993dfd | 3555 | |
d46c5b12 | 3556 | |
4ed46869 KH |
3557 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". */ |
3558 | ||
b73bfc1c | 3559 | static void |
df7492f9 | 3560 | decode_coding_iso_2022 (coding) |
4ed46869 | 3561 | struct coding_system *coding; |
4ed46869 | 3562 | { |
8f924df7 KH |
3563 | const unsigned char *src = coding->source + coding->consumed; |
3564 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
3565 | const unsigned char *src_base; | |
69a80ea3 | 3566 | int *charbuf = coding->charbuf + coding->charbuf_used; |
df80c7f0 KH |
3567 | /* We may produce two annocations (charset and composition) in one |
3568 | loop and one more charset annocation at the end. */ | |
ff0dacd7 | 3569 | int *charbuf_end |
df80c7f0 | 3570 | = coding->charbuf + coding->charbuf_size - (MAX_ANNOTATION_LENGTH * 3); |
df7492f9 | 3571 | int consumed_chars = 0, consumed_chars_base; |
df7492f9 | 3572 | int multibytep = coding->src_multibyte; |
4ed46869 | 3573 | /* Charsets invoked to graphic plane 0 and 1 respectively. */ |
df7492f9 KH |
3574 | int charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); |
3575 | int charset_id_1 = CODING_ISO_INVOKED_CHARSET (coding, 1); | |
134b9549 | 3576 | int charset_id_2, charset_id_3; |
df7492f9 KH |
3577 | struct charset *charset; |
3578 | int c; | |
e951386e | 3579 | struct composition_status *cmp_status = CODING_ISO_CMP_STATUS (coding); |
24a73b0a | 3580 | Lisp_Object attrs, charset_list; |
ff0dacd7 KH |
3581 | int char_offset = coding->produced_char; |
3582 | int last_offset = char_offset; | |
3583 | int last_id = charset_ascii; | |
0a9564cb EZ |
3584 | int eol_crlf = |
3585 | !inhibit_eol_conversion && EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); | |
119852e7 | 3586 | int byte_after_cr = -1; |
e951386e | 3587 | int i; |
df7492f9 | 3588 | |
24a73b0a | 3589 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 | 3590 | setup_iso_safe_charsets (attrs); |
287c57d7 KH |
3591 | /* Charset list may have been changed. */ |
3592 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
1b3b981b | 3593 | coding->safe_charsets = SDATA (CODING_ATTR_SAFE_CHARSETS (attrs)); |
b73bfc1c | 3594 | |
e951386e KH |
3595 | if (cmp_status->state != COMPOSING_NO) |
3596 | { | |
3597 | for (i = 0; i < cmp_status->length; i++) | |
3598 | *charbuf++ = cmp_status->carryover[i]; | |
3599 | coding->annotated = 1; | |
3600 | } | |
3601 | ||
b73bfc1c | 3602 | while (1) |
4ed46869 | 3603 | { |
cf299835 | 3604 | int c1, c2, c3; |
b73bfc1c KH |
3605 | |
3606 | src_base = src; | |
df7492f9 KH |
3607 | consumed_chars_base = consumed_chars; |
3608 | ||
3609 | if (charbuf >= charbuf_end) | |
b71f6f73 KH |
3610 | { |
3611 | if (byte_after_cr >= 0) | |
3612 | src_base--; | |
3613 | break; | |
3614 | } | |
df7492f9 | 3615 | |
119852e7 KH |
3616 | if (byte_after_cr >= 0) |
3617 | c1 = byte_after_cr, byte_after_cr = -1; | |
3618 | else | |
3619 | ONE_MORE_BYTE (c1); | |
065e3595 KH |
3620 | if (c1 < 0) |
3621 | goto invalid_code; | |
4ed46869 | 3622 | |
e951386e | 3623 | if (CODING_ISO_EXTSEGMENT_LEN (coding) > 0) |
4ed46869 | 3624 | { |
e951386e KH |
3625 | *charbuf++ = ASCII_BYTE_P (c1) ? c1 : BYTE8_TO_CHAR (c1); |
3626 | char_offset++; | |
3627 | CODING_ISO_EXTSEGMENT_LEN (coding)--; | |
3628 | continue; | |
3629 | } | |
3630 | ||
3631 | if (CODING_ISO_EMBEDDED_UTF_8 (coding)) | |
3632 | { | |
3633 | if (c1 == ISO_CODE_ESC) | |
ec6d2bb8 | 3634 | { |
e951386e KH |
3635 | if (src + 1 >= src_end) |
3636 | goto no_more_source; | |
3637 | *charbuf++ = ISO_CODE_ESC; | |
3638 | char_offset++; | |
3639 | if (src[0] == '%' && src[1] == '@') | |
df7492f9 | 3640 | { |
e951386e KH |
3641 | src += 2; |
3642 | consumed_chars += 2; | |
3643 | char_offset += 2; | |
3644 | /* We are sure charbuf can contain two more chars. */ | |
3645 | *charbuf++ = '%'; | |
3646 | *charbuf++ = '@'; | |
3647 | CODING_ISO_EMBEDDED_UTF_8 (coding) = 0; | |
df7492f9 | 3648 | } |
4ed46869 | 3649 | } |
e951386e KH |
3650 | else |
3651 | { | |
3652 | *charbuf++ = ASCII_BYTE_P (c1) ? c1 : BYTE8_TO_CHAR (c1); | |
3653 | char_offset++; | |
3654 | } | |
3655 | continue; | |
3656 | } | |
3657 | ||
3658 | if ((cmp_status->state == COMPOSING_RULE | |
3659 | || cmp_status->state == COMPOSING_COMPONENT_RULE) | |
3660 | && c1 != ISO_CODE_ESC) | |
3661 | { | |
3662 | int rule, nbytes; | |
3663 | ||
3664 | DECODE_COMPOSITION_RULE (rule, nbytes); | |
3665 | if (rule < 0) | |
3666 | goto invalid_code; | |
3667 | STORE_COMPOSITION_RULE (rule); | |
3668 | continue; | |
3669 | } | |
3670 | ||
3671 | /* We produce at most one character. */ | |
3672 | switch (iso_code_class [c1]) | |
3673 | { | |
3674 | case ISO_0x20_or_0x7F: | |
df7492f9 KH |
3675 | if (charset_id_0 < 0 |
3676 | || ! CHARSET_ISO_CHARS_96 (CHARSET_FROM_ID (charset_id_0))) | |
781d7a48 KH |
3677 | /* This is SPACE or DEL. */ |
3678 | charset = CHARSET_FROM_ID (charset_ascii); | |
3679 | else | |
3680 | charset = CHARSET_FROM_ID (charset_id_0); | |
3681 | break; | |
4ed46869 KH |
3682 | |
3683 | case ISO_graphic_plane_0: | |
134b9549 KH |
3684 | if (charset_id_0 < 0) |
3685 | charset = CHARSET_FROM_ID (charset_ascii); | |
3686 | else | |
3687 | charset = CHARSET_FROM_ID (charset_id_0); | |
4ed46869 KH |
3688 | break; |
3689 | ||
3690 | case ISO_0xA0_or_0xFF: | |
df7492f9 KH |
3691 | if (charset_id_1 < 0 |
3692 | || ! CHARSET_ISO_CHARS_96 (CHARSET_FROM_ID (charset_id_1)) | |
3693 | || CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) | |
3694 | goto invalid_code; | |
4ed46869 KH |
3695 | /* This is a graphic character, we fall down ... */ |
3696 | ||
3697 | case ISO_graphic_plane_1: | |
df7492f9 KH |
3698 | if (charset_id_1 < 0) |
3699 | goto invalid_code; | |
3700 | charset = CHARSET_FROM_ID (charset_id_1); | |
4ed46869 KH |
3701 | break; |
3702 | ||
df7492f9 | 3703 | case ISO_control_0: |
119852e7 KH |
3704 | if (eol_crlf && c1 == '\r') |
3705 | ONE_MORE_BYTE (byte_after_cr); | |
df7492f9 KH |
3706 | MAYBE_FINISH_COMPOSITION (); |
3707 | charset = CHARSET_FROM_ID (charset_ascii); | |
4ed46869 KH |
3708 | break; |
3709 | ||
df7492f9 | 3710 | case ISO_control_1: |
df7492f9 KH |
3711 | goto invalid_code; |
3712 | ||
4ed46869 | 3713 | case ISO_shift_out: |
df7492f9 KH |
3714 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT) |
3715 | || CODING_ISO_DESIGNATION (coding, 1) < 0) | |
3716 | goto invalid_code; | |
3717 | CODING_ISO_INVOCATION (coding, 0) = 1; | |
3718 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3719 | continue; |
4ed46869 KH |
3720 | |
3721 | case ISO_shift_in: | |
df7492f9 KH |
3722 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT)) |
3723 | goto invalid_code; | |
3724 | CODING_ISO_INVOCATION (coding, 0) = 0; | |
3725 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3726 | continue; |
4ed46869 KH |
3727 | |
3728 | case ISO_single_shift_2_7: | |
3729 | case ISO_single_shift_2: | |
df7492f9 KH |
3730 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT)) |
3731 | goto invalid_code; | |
4ed46869 KH |
3732 | /* SS2 is handled as an escape sequence of ESC 'N' */ |
3733 | c1 = 'N'; | |
3734 | goto label_escape_sequence; | |
3735 | ||
3736 | case ISO_single_shift_3: | |
df7492f9 KH |
3737 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT)) |
3738 | goto invalid_code; | |
4ed46869 KH |
3739 | /* SS2 is handled as an escape sequence of ESC 'O' */ |
3740 | c1 = 'O'; | |
3741 | goto label_escape_sequence; | |
3742 | ||
3743 | case ISO_control_sequence_introducer: | |
3744 | /* CSI is handled as an escape sequence of ESC '[' ... */ | |
3745 | c1 = '['; | |
3746 | goto label_escape_sequence; | |
3747 | ||
3748 | case ISO_escape: | |
3749 | ONE_MORE_BYTE (c1); | |
3750 | label_escape_sequence: | |
df7492f9 | 3751 | /* Escape sequences handled here are invocation, |
4ed46869 KH |
3752 | designation, direction specification, and character |
3753 | composition specification. */ | |
3754 | switch (c1) | |
3755 | { | |
3756 | case '&': /* revision of following character set */ | |
3757 | ONE_MORE_BYTE (c1); | |
3758 | if (!(c1 >= '@' && c1 <= '~')) | |
df7492f9 | 3759 | goto invalid_code; |
4ed46869 KH |
3760 | ONE_MORE_BYTE (c1); |
3761 | if (c1 != ISO_CODE_ESC) | |
df7492f9 | 3762 | goto invalid_code; |
4ed46869 KH |
3763 | ONE_MORE_BYTE (c1); |
3764 | goto label_escape_sequence; | |
3765 | ||
3766 | case '$': /* designation of 2-byte character set */ | |
df7492f9 KH |
3767 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATION)) |
3768 | goto invalid_code; | |
134b9549 KH |
3769 | { |
3770 | int reg, chars96; | |
3771 | ||
3772 | ONE_MORE_BYTE (c1); | |
3773 | if (c1 >= '@' && c1 <= 'B') | |
3774 | { /* designation of JISX0208.1978, GB2312.1980, | |
88993dfd | 3775 | or JISX0208.1980 */ |
134b9549 KH |
3776 | reg = 0, chars96 = 0; |
3777 | } | |
3778 | else if (c1 >= 0x28 && c1 <= 0x2B) | |
3779 | { /* designation of DIMENSION2_CHARS94 character set */ | |
3780 | reg = c1 - 0x28, chars96 = 0; | |
3781 | ONE_MORE_BYTE (c1); | |
3782 | } | |
3783 | else if (c1 >= 0x2C && c1 <= 0x2F) | |
3784 | { /* designation of DIMENSION2_CHARS96 character set */ | |
3785 | reg = c1 - 0x2C, chars96 = 1; | |
3786 | ONE_MORE_BYTE (c1); | |
3787 | } | |
3788 | else | |
3789 | goto invalid_code; | |
3790 | DECODE_DESIGNATION (reg, 2, chars96, c1); | |
3791 | /* We must update these variables now. */ | |
3792 | if (reg == 0) | |
3793 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
3794 | else if (reg == 1) | |
3795 | charset_id_1 = CODING_ISO_INVOKED_CHARSET (coding, 1); | |
3796 | if (chars96 < 0) | |
3797 | goto invalid_code; | |
3798 | } | |
b73bfc1c | 3799 | continue; |
4ed46869 KH |
3800 | |
3801 | case 'n': /* invocation of locking-shift-2 */ | |
df7492f9 KH |
3802 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT) |
3803 | || CODING_ISO_DESIGNATION (coding, 2) < 0) | |
3804 | goto invalid_code; | |
3805 | CODING_ISO_INVOCATION (coding, 0) = 2; | |
3806 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3807 | continue; |
4ed46869 KH |
3808 | |
3809 | case 'o': /* invocation of locking-shift-3 */ | |
df7492f9 KH |
3810 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT) |
3811 | || CODING_ISO_DESIGNATION (coding, 3) < 0) | |
3812 | goto invalid_code; | |
3813 | CODING_ISO_INVOCATION (coding, 0) = 3; | |
3814 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3815 | continue; |
4ed46869 KH |
3816 | |
3817 | case 'N': /* invocation of single-shift-2 */ | |
df7492f9 KH |
3818 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
3819 | || CODING_ISO_DESIGNATION (coding, 2) < 0) | |
3820 | goto invalid_code; | |
134b9549 KH |
3821 | charset_id_2 = CODING_ISO_DESIGNATION (coding, 2); |
3822 | if (charset_id_2 < 0) | |
3823 | charset = CHARSET_FROM_ID (charset_ascii); | |
3824 | else | |
3825 | charset = CHARSET_FROM_ID (charset_id_2); | |
b73bfc1c | 3826 | ONE_MORE_BYTE (c1); |
e7046a18 | 3827 | if (c1 < 0x20 || (c1 >= 0x80 && c1 < 0xA0)) |
df7492f9 | 3828 | goto invalid_code; |
4ed46869 KH |
3829 | break; |
3830 | ||
3831 | case 'O': /* invocation of single-shift-3 */ | |
df7492f9 KH |
3832 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
3833 | || CODING_ISO_DESIGNATION (coding, 3) < 0) | |
3834 | goto invalid_code; | |
134b9549 KH |
3835 | charset_id_3 = CODING_ISO_DESIGNATION (coding, 3); |
3836 | if (charset_id_3 < 0) | |
3837 | charset = CHARSET_FROM_ID (charset_ascii); | |
3838 | else | |
3839 | charset = CHARSET_FROM_ID (charset_id_3); | |
b73bfc1c | 3840 | ONE_MORE_BYTE (c1); |
e7046a18 | 3841 | if (c1 < 0x20 || (c1 >= 0x80 && c1 < 0xA0)) |
df7492f9 | 3842 | goto invalid_code; |
4ed46869 KH |
3843 | break; |
3844 | ||
ec6d2bb8 | 3845 | case '0': case '2': case '3': case '4': /* start composition */ |
df7492f9 KH |
3846 | if (! (coding->common_flags & CODING_ANNOTATE_COMPOSITION_MASK)) |
3847 | goto invalid_code; | |
e951386e KH |
3848 | if (last_id != charset_ascii) |
3849 | { | |
3850 | ADD_CHARSET_DATA (charbuf, char_offset- last_offset, last_id); | |
3851 | last_id = charset_ascii; | |
3852 | last_offset = char_offset; | |
3853 | } | |
ec6d2bb8 | 3854 | DECODE_COMPOSITION_START (c1); |
b73bfc1c | 3855 | continue; |
4ed46869 | 3856 | |
ec6d2bb8 | 3857 | case '1': /* end composition */ |
e951386e | 3858 | if (cmp_status->state == COMPOSING_NO) |
df7492f9 KH |
3859 | goto invalid_code; |
3860 | DECODE_COMPOSITION_END (); | |
b73bfc1c | 3861 | continue; |
4ed46869 KH |
3862 | |
3863 | case '[': /* specification of direction */ | |
de59072a | 3864 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DIRECTION)) |
df7492f9 | 3865 | goto invalid_code; |
4ed46869 | 3866 | /* For the moment, nested direction is not supported. |
d46c5b12 | 3867 | So, `coding->mode & CODING_MODE_DIRECTION' zero means |
df7492f9 | 3868 | left-to-right, and nozero means right-to-left. */ |
4ed46869 KH |
3869 | ONE_MORE_BYTE (c1); |
3870 | switch (c1) | |
3871 | { | |
3872 | case ']': /* end of the current direction */ | |
d46c5b12 | 3873 | coding->mode &= ~CODING_MODE_DIRECTION; |
4ed46869 KH |
3874 | |
3875 | case '0': /* end of the current direction */ | |
3876 | case '1': /* start of left-to-right direction */ | |
3877 | ONE_MORE_BYTE (c1); | |
3878 | if (c1 == ']') | |
d46c5b12 | 3879 | coding->mode &= ~CODING_MODE_DIRECTION; |
4ed46869 | 3880 | else |
df7492f9 | 3881 | goto invalid_code; |
4ed46869 KH |
3882 | break; |
3883 | ||
3884 | case '2': /* start of right-to-left direction */ | |
3885 | ONE_MORE_BYTE (c1); | |
3886 | if (c1 == ']') | |
d46c5b12 | 3887 | coding->mode |= CODING_MODE_DIRECTION; |
4ed46869 | 3888 | else |
df7492f9 | 3889 | goto invalid_code; |
4ed46869 KH |
3890 | break; |
3891 | ||
3892 | default: | |
df7492f9 | 3893 | goto invalid_code; |
4ed46869 | 3894 | } |
b73bfc1c | 3895 | continue; |
4ed46869 | 3896 | |
103e0180 | 3897 | case '%': |
103e0180 KH |
3898 | ONE_MORE_BYTE (c1); |
3899 | if (c1 == '/') | |
3900 | { | |
3901 | /* CTEXT extended segment: | |
3902 | ESC % / [0-4] M L --ENCODING-NAME-- \002 --BYTES-- | |
3903 | We keep these bytes as is for the moment. | |
3904 | They may be decoded by post-read-conversion. */ | |
3905 | int dim, M, L; | |
4776e638 | 3906 | int size; |
8f924df7 | 3907 | |
103e0180 | 3908 | ONE_MORE_BYTE (dim); |
e951386e KH |
3909 | if (dim < 0 || dim > 4) |
3910 | goto invalid_code; | |
103e0180 | 3911 | ONE_MORE_BYTE (M); |
e951386e KH |
3912 | if (M < 128) |
3913 | goto invalid_code; | |
103e0180 | 3914 | ONE_MORE_BYTE (L); |
e951386e KH |
3915 | if (L < 128) |
3916 | goto invalid_code; | |
103e0180 | 3917 | size = ((M - 128) * 128) + (L - 128); |
e951386e | 3918 | if (charbuf + 6 > charbuf_end) |
4776e638 KH |
3919 | goto break_loop; |
3920 | *charbuf++ = ISO_CODE_ESC; | |
3921 | *charbuf++ = '%'; | |
3922 | *charbuf++ = '/'; | |
3923 | *charbuf++ = dim; | |
3924 | *charbuf++ = BYTE8_TO_CHAR (M); | |
3925 | *charbuf++ = BYTE8_TO_CHAR (L); | |
e951386e | 3926 | CODING_ISO_EXTSEGMENT_LEN (coding) = size; |
103e0180 KH |
3927 | } |
3928 | else if (c1 == 'G') | |
3929 | { | |
103e0180 KH |
3930 | /* XFree86 extension for embedding UTF-8 in CTEXT: |
3931 | ESC % G --UTF-8-BYTES-- ESC % @ | |
3932 | We keep these bytes as is for the moment. | |
3933 | They may be decoded by post-read-conversion. */ | |
e951386e | 3934 | if (charbuf + 3 > charbuf_end) |
4776e638 | 3935 | goto break_loop; |
e951386e KH |
3936 | *charbuf++ = ISO_CODE_ESC; |
3937 | *charbuf++ = '%'; | |
3938 | *charbuf++ = 'G'; | |
3939 | CODING_ISO_EMBEDDED_UTF_8 (coding) = 1; | |
103e0180 KH |
3940 | } |
3941 | else | |
4776e638 | 3942 | goto invalid_code; |
103e0180 | 3943 | continue; |
4776e638 | 3944 | break; |
103e0180 | 3945 | |
4ed46869 | 3946 | default: |
df7492f9 KH |
3947 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATION)) |
3948 | goto invalid_code; | |
134b9549 KH |
3949 | { |
3950 | int reg, chars96; | |
3951 | ||
3952 | if (c1 >= 0x28 && c1 <= 0x2B) | |
3953 | { /* designation of DIMENSION1_CHARS94 character set */ | |
3954 | reg = c1 - 0x28, chars96 = 0; | |
3955 | ONE_MORE_BYTE (c1); | |
3956 | } | |
3957 | else if (c1 >= 0x2C && c1 <= 0x2F) | |
3958 | { /* designation of DIMENSION1_CHARS96 character set */ | |
3959 | reg = c1 - 0x2C, chars96 = 1; | |
3960 | ONE_MORE_BYTE (c1); | |
3961 | } | |
3962 | else | |
3963 | goto invalid_code; | |
3964 | DECODE_DESIGNATION (reg, 1, chars96, c1); | |
3965 | /* We must update these variables now. */ | |
3966 | if (reg == 0) | |
3967 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
3968 | else if (reg == 1) | |
3969 | charset_id_1 = CODING_ISO_INVOKED_CHARSET (coding, 1); | |
3970 | if (chars96 < 0) | |
3971 | goto invalid_code; | |
3972 | } | |
b73bfc1c | 3973 | continue; |
4ed46869 | 3974 | } |
b73bfc1c | 3975 | } |
4ed46869 | 3976 | |
e951386e KH |
3977 | if (cmp_status->state == COMPOSING_NO |
3978 | && charset->id != charset_ascii | |
ff0dacd7 KH |
3979 | && last_id != charset->id) |
3980 | { | |
3981 | if (last_id != charset_ascii) | |
69a80ea3 | 3982 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
ff0dacd7 KH |
3983 | last_id = charset->id; |
3984 | last_offset = char_offset; | |
3985 | } | |
3986 | ||
b73bfc1c | 3987 | /* Now we know CHARSET and 1st position code C1 of a character. |
cf299835 KH |
3988 | Produce a decoded character while getting 2nd and 3rd |
3989 | position codes C2, C3 if necessary. */ | |
df7492f9 | 3990 | if (CHARSET_DIMENSION (charset) > 1) |
b73bfc1c KH |
3991 | { |
3992 | ONE_MORE_BYTE (c2); | |
cf299835 KH |
3993 | if (c2 < 0x20 || (c2 >= 0x80 && c2 < 0xA0) |
3994 | || ((c1 & 0x80) != (c2 & 0x80))) | |
b73bfc1c | 3995 | /* C2 is not in a valid range. */ |
df7492f9 | 3996 | goto invalid_code; |
cf299835 KH |
3997 | if (CHARSET_DIMENSION (charset) == 2) |
3998 | c1 = (c1 << 8) | c2; | |
3999 | else | |
df7492f9 | 4000 | { |
cf299835 KH |
4001 | ONE_MORE_BYTE (c3); |
4002 | if (c3 < 0x20 || (c3 >= 0x80 && c3 < 0xA0) | |
4003 | || ((c1 & 0x80) != (c3 & 0x80))) | |
4004 | /* C3 is not in a valid range. */ | |
df7492f9 | 4005 | goto invalid_code; |
cf299835 | 4006 | c1 = (c1 << 16) | (c2 << 8) | c2; |
df7492f9 KH |
4007 | } |
4008 | } | |
cf299835 | 4009 | c1 &= 0x7F7F7F; |
df7492f9 KH |
4010 | CODING_DECODE_CHAR (coding, src, src_base, src_end, charset, c1, c); |
4011 | if (c < 0) | |
4012 | { | |
4013 | MAYBE_FINISH_COMPOSITION (); | |
4014 | for (; src_base < src; src_base++, char_offset++) | |
4015 | { | |
4016 | if (ASCII_BYTE_P (*src_base)) | |
4017 | *charbuf++ = *src_base; | |
4018 | else | |
4019 | *charbuf++ = BYTE8_TO_CHAR (*src_base); | |
4020 | } | |
4021 | } | |
e951386e | 4022 | else if (cmp_status->state == COMPOSING_NO) |
df7492f9 KH |
4023 | { |
4024 | *charbuf++ = c; | |
4025 | char_offset++; | |
4ed46869 | 4026 | } |
e951386e KH |
4027 | else if ((cmp_status->state == COMPOSING_CHAR |
4028 | ? cmp_status->nchars | |
4029 | : cmp_status->ncomps) | |
4030 | >= MAX_COMPOSITION_COMPONENTS) | |
781d7a48 | 4031 | { |
e951386e KH |
4032 | /* Too long composition. */ |
4033 | MAYBE_FINISH_COMPOSITION (); | |
4034 | *charbuf++ = c; | |
4035 | char_offset++; | |
4ed46869 | 4036 | } |
e951386e KH |
4037 | else |
4038 | STORE_COMPOSITION_CHAR (c); | |
4ed46869 KH |
4039 | continue; |
4040 | ||
df7492f9 KH |
4041 | invalid_code: |
4042 | MAYBE_FINISH_COMPOSITION (); | |
4ed46869 | 4043 | src = src_base; |
df7492f9 KH |
4044 | consumed_chars = consumed_chars_base; |
4045 | ONE_MORE_BYTE (c); | |
065e3595 | 4046 | *charbuf++ = c < 0 ? -c : ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 4047 | char_offset++; |
df7492f9 | 4048 | coding->errors++; |
4776e638 KH |
4049 | continue; |
4050 | ||
4051 | break_loop: | |
4052 | break; | |
4ed46869 | 4053 | } |
fb88bf2d | 4054 | |
df7492f9 | 4055 | no_more_source: |
e951386e KH |
4056 | if (cmp_status->state != COMPOSING_NO) |
4057 | { | |
4058 | if (coding->mode & CODING_MODE_LAST_BLOCK) | |
4059 | MAYBE_FINISH_COMPOSITION (); | |
4060 | else | |
4061 | { | |
4062 | charbuf -= cmp_status->length; | |
4063 | for (i = 0; i < cmp_status->length; i++) | |
4064 | cmp_status->carryover[i] = charbuf[i]; | |
4065 | } | |
4066 | } | |
4067 | else if (last_id != charset_ascii) | |
69a80ea3 | 4068 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
4069 | coding->consumed_char += consumed_chars_base; |
4070 | coding->consumed = src_base - coding->source; | |
4071 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
4072 | } |
4073 | ||
b73bfc1c | 4074 | |
f4dee582 | 4075 | /* ISO2022 encoding stuff. */ |
4ed46869 KH |
4076 | |
4077 | /* | |
f4dee582 | 4078 | It is not enough to say just "ISO2022" on encoding, we have to |
df7492f9 | 4079 | specify more details. In Emacs, each coding system of ISO2022 |
4ed46869 | 4080 | variant has the following specifications: |
df7492f9 | 4081 | 1. Initial designation to G0 thru G3. |
4ed46869 KH |
4082 | 2. Allows short-form designation? |
4083 | 3. ASCII should be designated to G0 before control characters? | |
4084 | 4. ASCII should be designated to G0 at end of line? | |
4085 | 5. 7-bit environment or 8-bit environment? | |
4086 | 6. Use locking-shift? | |
4087 | 7. Use Single-shift? | |
4088 | And the following two are only for Japanese: | |
4089 | 8. Use ASCII in place of JIS0201-1976-Roman? | |
4090 | 9. Use JISX0208-1983 in place of JISX0208-1978? | |
df7492f9 KH |
4091 | These specifications are encoded in CODING_ISO_FLAGS (coding) as flag bits |
4092 | defined by macros CODING_ISO_FLAG_XXX. See `coding.h' for more | |
f4dee582 | 4093 | details. |
4ed46869 KH |
4094 | */ |
4095 | ||
4096 | /* Produce codes (escape sequence) for designating CHARSET to graphic | |
b73bfc1c KH |
4097 | register REG at DST, and increment DST. If <final-char> of CHARSET is |
4098 | '@', 'A', or 'B' and the coding system CODING allows, produce | |
4099 | designation sequence of short-form. */ | |
4ed46869 KH |
4100 | |
4101 | #define ENCODE_DESIGNATION(charset, reg, coding) \ | |
4102 | do { \ | |
df7492f9 | 4103 | unsigned char final_char = CHARSET_ISO_FINAL (charset); \ |
4ed46869 KH |
4104 | char *intermediate_char_94 = "()*+"; \ |
4105 | char *intermediate_char_96 = ",-./"; \ | |
df7492f9 KH |
4106 | int revision = -1; \ |
4107 | int c; \ | |
4108 | \ | |
4109 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_REVISION) \ | |
c197f191 | 4110 | revision = CHARSET_ISO_REVISION (charset); \ |
df7492f9 KH |
4111 | \ |
4112 | if (revision >= 0) \ | |
70c22245 | 4113 | { \ |
df7492f9 KH |
4114 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, '&'); \ |
4115 | EMIT_ONE_BYTE ('@' + revision); \ | |
4ed46869 | 4116 | } \ |
df7492f9 | 4117 | EMIT_ONE_ASCII_BYTE (ISO_CODE_ESC); \ |
4ed46869 KH |
4118 | if (CHARSET_DIMENSION (charset) == 1) \ |
4119 | { \ | |
df7492f9 KH |
4120 | if (! CHARSET_ISO_CHARS_96 (charset)) \ |
4121 | c = intermediate_char_94[reg]; \ | |
4ed46869 | 4122 | else \ |
df7492f9 KH |
4123 | c = intermediate_char_96[reg]; \ |
4124 | EMIT_ONE_ASCII_BYTE (c); \ | |
4ed46869 KH |
4125 | } \ |
4126 | else \ | |
4127 | { \ | |
df7492f9 KH |
4128 | EMIT_ONE_ASCII_BYTE ('$'); \ |
4129 | if (! CHARSET_ISO_CHARS_96 (charset)) \ | |
4ed46869 | 4130 | { \ |
df7492f9 | 4131 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LONG_FORM \ |
b73bfc1c KH |
4132 | || reg != 0 \ |
4133 | || final_char < '@' || final_char > 'B') \ | |
df7492f9 | 4134 | EMIT_ONE_ASCII_BYTE (intermediate_char_94[reg]); \ |
4ed46869 KH |
4135 | } \ |
4136 | else \ | |
df7492f9 | 4137 | EMIT_ONE_ASCII_BYTE (intermediate_char_96[reg]); \ |
4ed46869 | 4138 | } \ |
df7492f9 KH |
4139 | EMIT_ONE_ASCII_BYTE (final_char); \ |
4140 | \ | |
4141 | CODING_ISO_DESIGNATION (coding, reg) = CHARSET_ID (charset); \ | |
4ed46869 KH |
4142 | } while (0) |
4143 | ||
df7492f9 | 4144 | |
4ed46869 KH |
4145 | /* The following two macros produce codes (control character or escape |
4146 | sequence) for ISO2022 single-shift functions (single-shift-2 and | |
4147 | single-shift-3). */ | |
4148 | ||
df7492f9 KH |
4149 | #define ENCODE_SINGLE_SHIFT_2 \ |
4150 | do { \ | |
4151 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ | |
4152 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'N'); \ | |
4153 | else \ | |
4154 | EMIT_ONE_BYTE (ISO_CODE_SS2); \ | |
4155 | CODING_ISO_SINGLE_SHIFTING (coding) = 1; \ | |
4ed46869 KH |
4156 | } while (0) |
4157 | ||
df7492f9 KH |
4158 | |
4159 | #define ENCODE_SINGLE_SHIFT_3 \ | |
4160 | do { \ | |
4161 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ | |
4162 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'O'); \ | |
4163 | else \ | |
4164 | EMIT_ONE_BYTE (ISO_CODE_SS3); \ | |
4165 | CODING_ISO_SINGLE_SHIFTING (coding) = 1; \ | |
4ed46869 KH |
4166 | } while (0) |
4167 | ||
df7492f9 | 4168 | |
4ed46869 KH |
4169 | /* The following four macros produce codes (control character or |
4170 | escape sequence) for ISO2022 locking-shift functions (shift-in, | |
4171 | shift-out, locking-shift-2, and locking-shift-3). */ | |
4172 | ||
df7492f9 KH |
4173 | #define ENCODE_SHIFT_IN \ |
4174 | do { \ | |
4175 | EMIT_ONE_ASCII_BYTE (ISO_CODE_SI); \ | |
4176 | CODING_ISO_INVOCATION (coding, 0) = 0; \ | |
4ed46869 KH |
4177 | } while (0) |
4178 | ||
df7492f9 KH |
4179 | |
4180 | #define ENCODE_SHIFT_OUT \ | |
4181 | do { \ | |
4182 | EMIT_ONE_ASCII_BYTE (ISO_CODE_SO); \ | |
4183 | CODING_ISO_INVOCATION (coding, 0) = 1; \ | |
4ed46869 KH |
4184 | } while (0) |
4185 | ||
df7492f9 KH |
4186 | |
4187 | #define ENCODE_LOCKING_SHIFT_2 \ | |
4188 | do { \ | |
4189 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'n'); \ | |
4190 | CODING_ISO_INVOCATION (coding, 0) = 2; \ | |
4ed46869 KH |
4191 | } while (0) |
4192 | ||
df7492f9 KH |
4193 | |
4194 | #define ENCODE_LOCKING_SHIFT_3 \ | |
4195 | do { \ | |
4196 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'n'); \ | |
4197 | CODING_ISO_INVOCATION (coding, 0) = 3; \ | |
4ed46869 KH |
4198 | } while (0) |
4199 | ||
df7492f9 | 4200 | |
f4dee582 RS |
4201 | /* Produce codes for a DIMENSION1 character whose character set is |
4202 | CHARSET and whose position-code is C1. Designation and invocation | |
4ed46869 KH |
4203 | sequences are also produced in advance if necessary. */ |
4204 | ||
6e85d753 KH |
4205 | #define ENCODE_ISO_CHARACTER_DIMENSION1(charset, c1) \ |
4206 | do { \ | |
df7492f9 | 4207 | int id = CHARSET_ID (charset); \ |
bf16eb23 KH |
4208 | \ |
4209 | if ((CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_ROMAN) \ | |
4210 | && id == charset_ascii) \ | |
4211 | { \ | |
4212 | id = charset_jisx0201_roman; \ | |
4213 | charset = CHARSET_FROM_ID (id); \ | |
4214 | } \ | |
4215 | \ | |
df7492f9 | 4216 | if (CODING_ISO_SINGLE_SHIFTING (coding)) \ |
6e85d753 | 4217 | { \ |
df7492f9 KH |
4218 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ |
4219 | EMIT_ONE_ASCII_BYTE (c1 & 0x7F); \ | |
6e85d753 | 4220 | else \ |
df7492f9 KH |
4221 | EMIT_ONE_BYTE (c1 | 0x80); \ |
4222 | CODING_ISO_SINGLE_SHIFTING (coding) = 0; \ | |
6e85d753 KH |
4223 | break; \ |
4224 | } \ | |
df7492f9 | 4225 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 0)) \ |
6e85d753 | 4226 | { \ |
df7492f9 | 4227 | EMIT_ONE_ASCII_BYTE (c1 & 0x7F); \ |
6e85d753 KH |
4228 | break; \ |
4229 | } \ | |
df7492f9 | 4230 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 1)) \ |
6e85d753 | 4231 | { \ |
df7492f9 | 4232 | EMIT_ONE_BYTE (c1 | 0x80); \ |
6e85d753 KH |
4233 | break; \ |
4234 | } \ | |
6e85d753 KH |
4235 | else \ |
4236 | /* Since CHARSET is not yet invoked to any graphic planes, we \ | |
4237 | must invoke it, or, at first, designate it to some graphic \ | |
4238 | register. Then repeat the loop to actually produce the \ | |
4239 | character. */ \ | |
df7492f9 KH |
4240 | dst = encode_invocation_designation (charset, coding, dst, \ |
4241 | &produced_chars); \ | |
4ed46869 KH |
4242 | } while (1) |
4243 | ||
df7492f9 | 4244 | |
f4dee582 RS |
4245 | /* Produce codes for a DIMENSION2 character whose character set is |
4246 | CHARSET and whose position-codes are C1 and C2. Designation and | |
4ed46869 KH |
4247 | invocation codes are also produced in advance if necessary. */ |
4248 | ||
6e85d753 KH |
4249 | #define ENCODE_ISO_CHARACTER_DIMENSION2(charset, c1, c2) \ |
4250 | do { \ | |
df7492f9 | 4251 | int id = CHARSET_ID (charset); \ |
bf16eb23 KH |
4252 | \ |
4253 | if ((CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_OLDJIS) \ | |
4254 | && id == charset_jisx0208) \ | |
4255 | { \ | |
4256 | id = charset_jisx0208_1978; \ | |
4257 | charset = CHARSET_FROM_ID (id); \ | |
4258 | } \ | |
4259 | \ | |
df7492f9 | 4260 | if (CODING_ISO_SINGLE_SHIFTING (coding)) \ |
6e85d753 | 4261 | { \ |
df7492f9 KH |
4262 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ |
4263 | EMIT_TWO_ASCII_BYTES ((c1) & 0x7F, (c2) & 0x7F); \ | |
6e85d753 | 4264 | else \ |
df7492f9 KH |
4265 | EMIT_TWO_BYTES ((c1) | 0x80, (c2) | 0x80); \ |
4266 | CODING_ISO_SINGLE_SHIFTING (coding) = 0; \ | |
6e85d753 KH |
4267 | break; \ |
4268 | } \ | |
df7492f9 | 4269 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 0)) \ |
6e85d753 | 4270 | { \ |
df7492f9 | 4271 | EMIT_TWO_ASCII_BYTES ((c1) & 0x7F, (c2) & 0x7F); \ |
6e85d753 KH |
4272 | break; \ |
4273 | } \ | |
df7492f9 | 4274 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 1)) \ |
6e85d753 | 4275 | { \ |
df7492f9 | 4276 | EMIT_TWO_BYTES ((c1) | 0x80, (c2) | 0x80); \ |
6e85d753 KH |
4277 | break; \ |
4278 | } \ | |
6e85d753 KH |
4279 | else \ |
4280 | /* Since CHARSET is not yet invoked to any graphic planes, we \ | |
4281 | must invoke it, or, at first, designate it to some graphic \ | |
4282 | register. Then repeat the loop to actually produce the \ | |
4283 | character. */ \ | |
df7492f9 KH |
4284 | dst = encode_invocation_designation (charset, coding, dst, \ |
4285 | &produced_chars); \ | |
4ed46869 KH |
4286 | } while (1) |
4287 | ||
05e6f5dc | 4288 | |
df7492f9 KH |
4289 | #define ENCODE_ISO_CHARACTER(charset, c) \ |
4290 | do { \ | |
4291 | int code = ENCODE_CHAR ((charset),(c)); \ | |
4292 | \ | |
4293 | if (CHARSET_DIMENSION (charset) == 1) \ | |
4294 | ENCODE_ISO_CHARACTER_DIMENSION1 ((charset), code); \ | |
4295 | else \ | |
4296 | ENCODE_ISO_CHARACTER_DIMENSION2 ((charset), code >> 8, code & 0xFF); \ | |
84fbb8a0 | 4297 | } while (0) |
bdd9fb48 | 4298 | |
05e6f5dc | 4299 | |
4ed46869 | 4300 | /* Produce designation and invocation codes at a place pointed by DST |
df7492f9 | 4301 | to use CHARSET. The element `spec.iso_2022' of *CODING is updated. |
4ed46869 KH |
4302 | Return new DST. */ |
4303 | ||
4304 | unsigned char * | |
df7492f9 KH |
4305 | encode_invocation_designation (charset, coding, dst, p_nchars) |
4306 | struct charset *charset; | |
4ed46869 KH |
4307 | struct coding_system *coding; |
4308 | unsigned char *dst; | |
df7492f9 | 4309 | int *p_nchars; |
4ed46869 | 4310 | { |
df7492f9 KH |
4311 | int multibytep = coding->dst_multibyte; |
4312 | int produced_chars = *p_nchars; | |
4ed46869 | 4313 | int reg; /* graphic register number */ |
df7492f9 | 4314 | int id = CHARSET_ID (charset); |
4ed46869 KH |
4315 | |
4316 | /* At first, check designations. */ | |
4317 | for (reg = 0; reg < 4; reg++) | |
df7492f9 | 4318 | if (id == CODING_ISO_DESIGNATION (coding, reg)) |
4ed46869 KH |
4319 | break; |
4320 | ||
4321 | if (reg >= 4) | |
4322 | { | |
4323 | /* CHARSET is not yet designated to any graphic registers. */ | |
4324 | /* At first check the requested designation. */ | |
df7492f9 KH |
4325 | reg = CODING_ISO_REQUEST (coding, id); |
4326 | if (reg < 0) | |
1ba9e4ab KH |
4327 | /* Since CHARSET requests no special designation, designate it |
4328 | to graphic register 0. */ | |
4ed46869 KH |
4329 | reg = 0; |
4330 | ||
4331 | ENCODE_DESIGNATION (charset, reg, coding); | |
4332 | } | |
4333 | ||
df7492f9 KH |
4334 | if (CODING_ISO_INVOCATION (coding, 0) != reg |
4335 | && CODING_ISO_INVOCATION (coding, 1) != reg) | |
4ed46869 KH |
4336 | { |
4337 | /* Since the graphic register REG is not invoked to any graphic | |
4338 | planes, invoke it to graphic plane 0. */ | |
4339 | switch (reg) | |
4340 | { | |
4341 | case 0: /* graphic register 0 */ | |
4342 | ENCODE_SHIFT_IN; | |
4343 | break; | |
4344 | ||
4345 | case 1: /* graphic register 1 */ | |
4346 | ENCODE_SHIFT_OUT; | |
4347 | break; | |
4348 | ||
4349 | case 2: /* graphic register 2 */ | |
df7492f9 | 4350 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
4ed46869 KH |
4351 | ENCODE_SINGLE_SHIFT_2; |
4352 | else | |
4353 | ENCODE_LOCKING_SHIFT_2; | |
4354 | break; | |
4355 | ||
4356 | case 3: /* graphic register 3 */ | |
df7492f9 | 4357 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
4ed46869 KH |
4358 | ENCODE_SINGLE_SHIFT_3; |
4359 | else | |
4360 | ENCODE_LOCKING_SHIFT_3; | |
4361 | break; | |
4362 | } | |
4363 | } | |
b73bfc1c | 4364 | |
df7492f9 | 4365 | *p_nchars = produced_chars; |
4ed46869 KH |
4366 | return dst; |
4367 | } | |
4368 | ||
df7492f9 KH |
4369 | /* The following three macros produce codes for indicating direction |
4370 | of text. */ | |
4371 | #define ENCODE_CONTROL_SEQUENCE_INTRODUCER \ | |
ec6d2bb8 | 4372 | do { \ |
df7492f9 KH |
4373 | if (CODING_ISO_FLAGS (coding) == CODING_ISO_FLAG_SEVEN_BITS) \ |
4374 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, '['); \ | |
ec6d2bb8 | 4375 | else \ |
df7492f9 | 4376 | EMIT_ONE_BYTE (ISO_CODE_CSI); \ |
ec6d2bb8 KH |
4377 | } while (0) |
4378 | ||
ec6d2bb8 | 4379 | |
df7492f9 KH |
4380 | #define ENCODE_DIRECTION_R2L() \ |
4381 | do { \ | |
4382 | ENCODE_CONTROL_SEQUENCE_INTRODUCER (dst); \ | |
4383 | EMIT_TWO_ASCII_BYTES ('2', ']'); \ | |
ec6d2bb8 KH |
4384 | } while (0) |
4385 | ||
ec6d2bb8 | 4386 | |
df7492f9 | 4387 | #define ENCODE_DIRECTION_L2R() \ |
ec6d2bb8 | 4388 | do { \ |
df7492f9 KH |
4389 | ENCODE_CONTROL_SEQUENCE_INTRODUCER (dst); \ |
4390 | EMIT_TWO_ASCII_BYTES ('0', ']'); \ | |
ec6d2bb8 | 4391 | } while (0) |
4ed46869 | 4392 | |
4ed46869 KH |
4393 | |
4394 | /* Produce codes for designation and invocation to reset the graphic | |
4395 | planes and registers to initial state. */ | |
df7492f9 KH |
4396 | #define ENCODE_RESET_PLANE_AND_REGISTER() \ |
4397 | do { \ | |
4398 | int reg; \ | |
4399 | struct charset *charset; \ | |
4400 | \ | |
4401 | if (CODING_ISO_INVOCATION (coding, 0) != 0) \ | |
4402 | ENCODE_SHIFT_IN; \ | |
4403 | for (reg = 0; reg < 4; reg++) \ | |
4404 | if (CODING_ISO_INITIAL (coding, reg) >= 0 \ | |
4405 | && (CODING_ISO_DESIGNATION (coding, reg) \ | |
4406 | != CODING_ISO_INITIAL (coding, reg))) \ | |
4407 | { \ | |
4408 | charset = CHARSET_FROM_ID (CODING_ISO_INITIAL (coding, reg)); \ | |
4409 | ENCODE_DESIGNATION (charset, reg, coding); \ | |
4410 | } \ | |
4ed46869 KH |
4411 | } while (0) |
4412 | ||
df7492f9 | 4413 | |
bdd9fb48 | 4414 | /* Produce designation sequences of charsets in the line started from |
b73bfc1c | 4415 | SRC to a place pointed by DST, and return updated DST. |
bdd9fb48 KH |
4416 | |
4417 | If the current block ends before any end-of-line, we may fail to | |
d46c5b12 KH |
4418 | find all the necessary designations. */ |
4419 | ||
b73bfc1c | 4420 | static unsigned char * |
df7492f9 | 4421 | encode_designation_at_bol (coding, charbuf, charbuf_end, dst) |
e0e989f6 | 4422 | struct coding_system *coding; |
df7492f9 KH |
4423 | int *charbuf, *charbuf_end; |
4424 | unsigned char *dst; | |
e0e989f6 | 4425 | { |
df7492f9 | 4426 | struct charset *charset; |
bdd9fb48 KH |
4427 | /* Table of charsets to be designated to each graphic register. */ |
4428 | int r[4]; | |
df7492f9 KH |
4429 | int c, found = 0, reg; |
4430 | int produced_chars = 0; | |
4431 | int multibytep = coding->dst_multibyte; | |
4432 | Lisp_Object attrs; | |
4433 | Lisp_Object charset_list; | |
4434 | ||
4435 | attrs = CODING_ID_ATTRS (coding->id); | |
4436 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
4437 | if (EQ (charset_list, Qiso_2022)) | |
4438 | charset_list = Viso_2022_charset_list; | |
bdd9fb48 KH |
4439 | |
4440 | for (reg = 0; reg < 4; reg++) | |
4441 | r[reg] = -1; | |
4442 | ||
b73bfc1c | 4443 | while (found < 4) |
e0e989f6 | 4444 | { |
df7492f9 KH |
4445 | int id; |
4446 | ||
4447 | c = *charbuf++; | |
b73bfc1c KH |
4448 | if (c == '\n') |
4449 | break; | |
df7492f9 KH |
4450 | charset = char_charset (c, charset_list, NULL); |
4451 | id = CHARSET_ID (charset); | |
4452 | reg = CODING_ISO_REQUEST (coding, id); | |
4453 | if (reg >= 0 && r[reg] < 0) | |
bdd9fb48 KH |
4454 | { |
4455 | found++; | |
df7492f9 | 4456 | r[reg] = id; |
bdd9fb48 | 4457 | } |
bdd9fb48 KH |
4458 | } |
4459 | ||
4460 | if (found) | |
4461 | { | |
4462 | for (reg = 0; reg < 4; reg++) | |
4463 | if (r[reg] >= 0 | |
df7492f9 KH |
4464 | && CODING_ISO_DESIGNATION (coding, reg) != r[reg]) |
4465 | ENCODE_DESIGNATION (CHARSET_FROM_ID (r[reg]), reg, coding); | |
e0e989f6 | 4466 | } |
b73bfc1c KH |
4467 | |
4468 | return dst; | |
e0e989f6 KH |
4469 | } |
4470 | ||
4ed46869 KH |
4471 | /* See the above "GENERAL NOTES on `encode_coding_XXX ()' functions". */ |
4472 | ||
df7492f9 KH |
4473 | static int |
4474 | encode_coding_iso_2022 (coding) | |
4ed46869 | 4475 | struct coding_system *coding; |
4ed46869 | 4476 | { |
df7492f9 KH |
4477 | int multibytep = coding->dst_multibyte; |
4478 | int *charbuf = coding->charbuf; | |
4479 | int *charbuf_end = charbuf + coding->charbuf_used; | |
4480 | unsigned char *dst = coding->destination + coding->produced; | |
4481 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
4482 | int safe_room = 16; | |
4483 | int bol_designation | |
4484 | = (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATE_AT_BOL | |
4485 | && CODING_ISO_BOL (coding)); | |
4486 | int produced_chars = 0; | |
4487 | Lisp_Object attrs, eol_type, charset_list; | |
4488 | int ascii_compatible; | |
b73bfc1c | 4489 | int c; |
ff0dacd7 | 4490 | int preferred_charset_id = -1; |
05e6f5dc | 4491 | |
24a73b0a | 4492 | CODING_GET_INFO (coding, attrs, charset_list); |
0a9564cb | 4493 | eol_type = inhibit_eol_conversion ? Qunix : CODING_ID_EOL_TYPE (coding->id); |
24a73b0a KH |
4494 | if (VECTORP (eol_type)) |
4495 | eol_type = Qunix; | |
4496 | ||
004068e4 | 4497 | setup_iso_safe_charsets (attrs); |
ff0dacd7 | 4498 | /* Charset list may have been changed. */ |
287c57d7 | 4499 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); |
1b3b981b | 4500 | coding->safe_charsets = SDATA (CODING_ATTR_SAFE_CHARSETS (attrs)); |
0eecad43 | 4501 | |
df7492f9 | 4502 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); |
bdd9fb48 | 4503 | |
df7492f9 | 4504 | while (charbuf < charbuf_end) |
4ed46869 | 4505 | { |
df7492f9 | 4506 | ASSURE_DESTINATION (safe_room); |
b73bfc1c | 4507 | |
df7492f9 | 4508 | if (bol_designation) |
b73bfc1c | 4509 | { |
df7492f9 | 4510 | unsigned char *dst_prev = dst; |
4ed46869 | 4511 | |
bdd9fb48 | 4512 | /* We have to produce designation sequences if any now. */ |
df7492f9 KH |
4513 | dst = encode_designation_at_bol (coding, charbuf, charbuf_end, dst); |
4514 | bol_designation = 0; | |
4515 | /* We are sure that designation sequences are all ASCII bytes. */ | |
4516 | produced_chars += dst - dst_prev; | |
e0e989f6 KH |
4517 | } |
4518 | ||
df7492f9 | 4519 | c = *charbuf++; |
ec6d2bb8 | 4520 | |
ff0dacd7 KH |
4521 | if (c < 0) |
4522 | { | |
4523 | /* Handle an annotation. */ | |
4524 | switch (*charbuf) | |
ec6d2bb8 | 4525 | { |
ff0dacd7 KH |
4526 | case CODING_ANNOTATE_COMPOSITION_MASK: |
4527 | /* Not yet implemented. */ | |
4528 | break; | |
4529 | case CODING_ANNOTATE_CHARSET_MASK: | |
cf7dfdf5 | 4530 | preferred_charset_id = charbuf[2]; |
ff0dacd7 KH |
4531 | if (preferred_charset_id >= 0 |
4532 | && NILP (Fmemq (make_number (preferred_charset_id), | |
4533 | charset_list))) | |
4534 | preferred_charset_id = -1; | |
4535 | break; | |
4536 | default: | |
4537 | abort (); | |
4ed46869 | 4538 | } |
ff0dacd7 KH |
4539 | charbuf += -c - 1; |
4540 | continue; | |
4ed46869 | 4541 | } |
ec6d2bb8 | 4542 | |
b73bfc1c KH |
4543 | /* Now encode the character C. */ |
4544 | if (c < 0x20 || c == 0x7F) | |
4545 | { | |
df7492f9 KH |
4546 | if (c == '\n' |
4547 | || (c == '\r' && EQ (eol_type, Qmac))) | |
19a8d9e0 | 4548 | { |
df7492f9 KH |
4549 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_RESET_AT_EOL) |
4550 | ENCODE_RESET_PLANE_AND_REGISTER (); | |
4551 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_INIT_AT_BOL) | |
b73bfc1c | 4552 | { |
df7492f9 KH |
4553 | int i; |
4554 | ||
4555 | for (i = 0; i < 4; i++) | |
4556 | CODING_ISO_DESIGNATION (coding, i) | |
4557 | = CODING_ISO_INITIAL (coding, i); | |
b73bfc1c | 4558 | } |
df7492f9 KH |
4559 | bol_designation |
4560 | = CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATE_AT_BOL; | |
19a8d9e0 | 4561 | } |
df7492f9 KH |
4562 | else if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_RESET_AT_CNTL) |
4563 | ENCODE_RESET_PLANE_AND_REGISTER (); | |
4564 | EMIT_ONE_ASCII_BYTE (c); | |
4ed46869 | 4565 | } |
df7492f9 | 4566 | else if (ASCII_CHAR_P (c)) |
88993dfd | 4567 | { |
df7492f9 KH |
4568 | if (ascii_compatible) |
4569 | EMIT_ONE_ASCII_BYTE (c); | |
93dec019 | 4570 | else |
19a8d9e0 | 4571 | { |
bf16eb23 KH |
4572 | struct charset *charset = CHARSET_FROM_ID (charset_ascii); |
4573 | ENCODE_ISO_CHARACTER (charset, c); | |
19a8d9e0 | 4574 | } |
4ed46869 | 4575 | } |
16eafb5d | 4576 | else if (CHAR_BYTE8_P (c)) |
88993dfd | 4577 | { |
16eafb5d KH |
4578 | c = CHAR_TO_BYTE8 (c); |
4579 | EMIT_ONE_BYTE (c); | |
88993dfd | 4580 | } |
b73bfc1c | 4581 | else |
df7492f9 | 4582 | { |
ff0dacd7 | 4583 | struct charset *charset; |
b73bfc1c | 4584 | |
ff0dacd7 KH |
4585 | if (preferred_charset_id >= 0) |
4586 | { | |
4587 | charset = CHARSET_FROM_ID (preferred_charset_id); | |
4588 | if (! CHAR_CHARSET_P (c, charset)) | |
4589 | charset = char_charset (c, charset_list, NULL); | |
4590 | } | |
4591 | else | |
4592 | charset = char_charset (c, charset_list, NULL); | |
df7492f9 KH |
4593 | if (!charset) |
4594 | { | |
41cbe562 KH |
4595 | if (coding->mode & CODING_MODE_SAFE_ENCODING) |
4596 | { | |
4597 | c = CODING_INHIBIT_CHARACTER_SUBSTITUTION; | |
4598 | charset = CHARSET_FROM_ID (charset_ascii); | |
4599 | } | |
4600 | else | |
4601 | { | |
4602 | c = coding->default_char; | |
4603 | charset = char_charset (c, charset_list, NULL); | |
4604 | } | |
df7492f9 KH |
4605 | } |
4606 | ENCODE_ISO_CHARACTER (charset, c); | |
4607 | } | |
84fbb8a0 | 4608 | } |
b73bfc1c | 4609 | |
df7492f9 KH |
4610 | if (coding->mode & CODING_MODE_LAST_BLOCK |
4611 | && CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_RESET_AT_EOL) | |
4612 | { | |
4613 | ASSURE_DESTINATION (safe_room); | |
4614 | ENCODE_RESET_PLANE_AND_REGISTER (); | |
4615 | } | |
065e3595 | 4616 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4617 | CODING_ISO_BOL (coding) = bol_designation; |
4618 | coding->produced_char += produced_chars; | |
4619 | coding->produced = dst - coding->destination; | |
4620 | return 0; | |
4ed46869 KH |
4621 | } |
4622 | ||
4623 | \f | |
df7492f9 | 4624 | /*** 8,9. SJIS and BIG5 handlers ***/ |
4ed46869 | 4625 | |
df7492f9 | 4626 | /* Although SJIS and BIG5 are not ISO's coding system, they are used |
4ed46869 KH |
4627 | quite widely. So, for the moment, Emacs supports them in the bare |
4628 | C code. But, in the future, they may be supported only by CCL. */ | |
4629 | ||
4630 | /* SJIS is a coding system encoding three character sets: ASCII, right | |
4631 | half of JISX0201-Kana, and JISX0208. An ASCII character is encoded | |
4632 | as is. A character of charset katakana-jisx0201 is encoded by | |
4633 | "position-code + 0x80". A character of charset japanese-jisx0208 | |
4634 | is encoded in 2-byte but two position-codes are divided and shifted | |
df7492f9 | 4635 | so that it fit in the range below. |
4ed46869 KH |
4636 | |
4637 | --- CODE RANGE of SJIS --- | |
4638 | (character set) (range) | |
4639 | ASCII 0x00 .. 0x7F | |
df7492f9 | 4640 | KATAKANA-JISX0201 0xA0 .. 0xDF |
c28a9453 | 4641 | JISX0208 (1st byte) 0x81 .. 0x9F and 0xE0 .. 0xEF |
d14d03ac | 4642 | (2nd byte) 0x40 .. 0x7E and 0x80 .. 0xFC |
4ed46869 KH |
4643 | ------------------------------- |
4644 | ||
4645 | */ | |
4646 | ||
4647 | /* BIG5 is a coding system encoding two character sets: ASCII and | |
4648 | Big5. An ASCII character is encoded as is. Big5 is a two-byte | |
df7492f9 | 4649 | character set and is encoded in two-byte. |
4ed46869 KH |
4650 | |
4651 | --- CODE RANGE of BIG5 --- | |
4652 | (character set) (range) | |
4653 | ASCII 0x00 .. 0x7F | |
4654 | Big5 (1st byte) 0xA1 .. 0xFE | |
4655 | (2nd byte) 0x40 .. 0x7E and 0xA1 .. 0xFE | |
4656 | -------------------------- | |
4657 | ||
df7492f9 | 4658 | */ |
4ed46869 KH |
4659 | |
4660 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
4661 | Check if a text is encoded in SJIS. If it is, return | |
df7492f9 | 4662 | CATEGORY_MASK_SJIS, else return 0. */ |
4ed46869 | 4663 | |
0a28aafb | 4664 | static int |
ff0dacd7 | 4665 | detect_coding_sjis (coding, detect_info) |
df7492f9 | 4666 | struct coding_system *coding; |
ff0dacd7 | 4667 | struct coding_detection_info *detect_info; |
4ed46869 | 4668 | { |
065e3595 | 4669 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 4670 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
4671 | int multibytep = coding->src_multibyte; |
4672 | int consumed_chars = 0; | |
4673 | int found = 0; | |
b73bfc1c | 4674 | int c; |
f07190ca KH |
4675 | Lisp_Object attrs, charset_list; |
4676 | int max_first_byte_of_2_byte_code; | |
4677 | ||
4678 | CODING_GET_INFO (coding, attrs, charset_list); | |
4679 | max_first_byte_of_2_byte_code | |
4680 | = (XINT (Flength (charset_list)) > 3 ? 0xFC : 0xEF); | |
df7492f9 | 4681 | |
ff0dacd7 | 4682 | detect_info->checked |= CATEGORY_MASK_SJIS; |
df7492f9 KH |
4683 | /* A coding system of this category is always ASCII compatible. */ |
4684 | src += coding->head_ascii; | |
4ed46869 | 4685 | |
b73bfc1c | 4686 | while (1) |
4ed46869 | 4687 | { |
065e3595 | 4688 | src_base = src; |
df7492f9 | 4689 | ONE_MORE_BYTE (c); |
682169fe KH |
4690 | if (c < 0x80) |
4691 | continue; | |
f07190ca KH |
4692 | if ((c >= 0x81 && c <= 0x9F) |
4693 | || (c >= 0xE0 && c <= max_first_byte_of_2_byte_code)) | |
4ed46869 | 4694 | { |
df7492f9 | 4695 | ONE_MORE_BYTE (c); |
682169fe | 4696 | if (c < 0x40 || c == 0x7F || c > 0xFC) |
df7492f9 | 4697 | break; |
ff0dacd7 | 4698 | found = CATEGORY_MASK_SJIS; |
4ed46869 | 4699 | } |
df7492f9 | 4700 | else if (c >= 0xA0 && c < 0xE0) |
ff0dacd7 | 4701 | found = CATEGORY_MASK_SJIS; |
df7492f9 KH |
4702 | else |
4703 | break; | |
4ed46869 | 4704 | } |
ff0dacd7 | 4705 | detect_info->rejected |= CATEGORY_MASK_SJIS; |
df7492f9 KH |
4706 | return 0; |
4707 | ||
4708 | no_more_source: | |
065e3595 | 4709 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
89528eb3 | 4710 | { |
ff0dacd7 | 4711 | detect_info->rejected |= CATEGORY_MASK_SJIS; |
89528eb3 | 4712 | return 0; |
4ed46869 | 4713 | } |
ff0dacd7 KH |
4714 | detect_info->found |= found; |
4715 | return 1; | |
4ed46869 KH |
4716 | } |
4717 | ||
4718 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
4719 | Check if a text is encoded in BIG5. If it is, return | |
df7492f9 | 4720 | CATEGORY_MASK_BIG5, else return 0. */ |
4ed46869 | 4721 | |
0a28aafb | 4722 | static int |
ff0dacd7 | 4723 | detect_coding_big5 (coding, detect_info) |
df7492f9 | 4724 | struct coding_system *coding; |
ff0dacd7 | 4725 | struct coding_detection_info *detect_info; |
4ed46869 | 4726 | { |
065e3595 | 4727 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 4728 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
4729 | int multibytep = coding->src_multibyte; |
4730 | int consumed_chars = 0; | |
4731 | int found = 0; | |
b73bfc1c | 4732 | int c; |
fa42c37f | 4733 | |
ff0dacd7 | 4734 | detect_info->checked |= CATEGORY_MASK_BIG5; |
df7492f9 KH |
4735 | /* A coding system of this category is always ASCII compatible. */ |
4736 | src += coding->head_ascii; | |
fa42c37f | 4737 | |
b73bfc1c | 4738 | while (1) |
fa42c37f | 4739 | { |
065e3595 | 4740 | src_base = src; |
df7492f9 KH |
4741 | ONE_MORE_BYTE (c); |
4742 | if (c < 0x80) | |
fa42c37f | 4743 | continue; |
df7492f9 | 4744 | if (c >= 0xA1) |
fa42c37f | 4745 | { |
df7492f9 KH |
4746 | ONE_MORE_BYTE (c); |
4747 | if (c < 0x40 || (c >= 0x7F && c <= 0xA0)) | |
fa42c37f | 4748 | return 0; |
ff0dacd7 | 4749 | found = CATEGORY_MASK_BIG5; |
fa42c37f | 4750 | } |
df7492f9 KH |
4751 | else |
4752 | break; | |
fa42c37f | 4753 | } |
ff0dacd7 | 4754 | detect_info->rejected |= CATEGORY_MASK_BIG5; |
fa42c37f | 4755 | return 0; |
fa42c37f | 4756 | |
df7492f9 | 4757 | no_more_source: |
065e3595 | 4758 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
89528eb3 | 4759 | { |
ff0dacd7 | 4760 | detect_info->rejected |= CATEGORY_MASK_BIG5; |
89528eb3 KH |
4761 | return 0; |
4762 | } | |
ff0dacd7 KH |
4763 | detect_info->found |= found; |
4764 | return 1; | |
fa42c37f KH |
4765 | } |
4766 | ||
4ed46869 KH |
4767 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". |
4768 | If SJIS_P is 1, decode SJIS text, else decode BIG5 test. */ | |
fa42c37f | 4769 | |
b73bfc1c | 4770 | static void |
df7492f9 | 4771 | decode_coding_sjis (coding) |
4ed46869 | 4772 | struct coding_system *coding; |
4ed46869 | 4773 | { |
8f924df7 KH |
4774 | const unsigned char *src = coding->source + coding->consumed; |
4775 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
4776 | const unsigned char *src_base; | |
69a80ea3 | 4777 | int *charbuf = coding->charbuf + coding->charbuf_used; |
df80c7f0 KH |
4778 | /* We may produce one charset annocation in one loop and one more at |
4779 | the end. */ | |
69a80ea3 | 4780 | int *charbuf_end |
df80c7f0 | 4781 | = coding->charbuf + coding->charbuf_size - (MAX_ANNOTATION_LENGTH * 2); |
df7492f9 KH |
4782 | int consumed_chars = 0, consumed_chars_base; |
4783 | int multibytep = coding->src_multibyte; | |
4784 | struct charset *charset_roman, *charset_kanji, *charset_kana; | |
57a47f8a | 4785 | struct charset *charset_kanji2; |
24a73b0a | 4786 | Lisp_Object attrs, charset_list, val; |
ff0dacd7 KH |
4787 | int char_offset = coding->produced_char; |
4788 | int last_offset = char_offset; | |
4789 | int last_id = charset_ascii; | |
0a9564cb EZ |
4790 | int eol_crlf = |
4791 | !inhibit_eol_conversion && EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); | |
119852e7 | 4792 | int byte_after_cr = -1; |
a5d301df | 4793 | |
24a73b0a | 4794 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4795 | |
4796 | val = charset_list; | |
4797 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
89528eb3 | 4798 | charset_kana = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
57a47f8a KH |
4799 | charset_kanji = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
4800 | charset_kanji2 = NILP (val) ? NULL : CHARSET_FROM_ID (XINT (XCAR (val))); | |
fa42c37f | 4801 | |
b73bfc1c | 4802 | while (1) |
4ed46869 | 4803 | { |
df7492f9 | 4804 | int c, c1; |
24a73b0a | 4805 | struct charset *charset; |
fa42c37f | 4806 | |
b73bfc1c | 4807 | src_base = src; |
df7492f9 | 4808 | consumed_chars_base = consumed_chars; |
fa42c37f | 4809 | |
df7492f9 | 4810 | if (charbuf >= charbuf_end) |
b71f6f73 KH |
4811 | { |
4812 | if (byte_after_cr >= 0) | |
4813 | src_base--; | |
4814 | break; | |
4815 | } | |
df7492f9 | 4816 | |
119852e7 KH |
4817 | if (byte_after_cr >= 0) |
4818 | c = byte_after_cr, byte_after_cr = -1; | |
4819 | else | |
4820 | ONE_MORE_BYTE (c); | |
065e3595 KH |
4821 | if (c < 0) |
4822 | goto invalid_code; | |
24a73b0a | 4823 | if (c < 0x80) |
119852e7 KH |
4824 | { |
4825 | if (eol_crlf && c == '\r') | |
4826 | ONE_MORE_BYTE (byte_after_cr); | |
4827 | charset = charset_roman; | |
4828 | } | |
57a47f8a | 4829 | else if (c == 0x80 || c == 0xA0) |
8e921c4b | 4830 | goto invalid_code; |
57a47f8a KH |
4831 | else if (c >= 0xA1 && c <= 0xDF) |
4832 | { | |
4833 | /* SJIS -> JISX0201-Kana */ | |
4834 | c &= 0x7F; | |
4835 | charset = charset_kana; | |
4836 | } | |
4837 | else if (c <= 0xEF) | |
df7492f9 | 4838 | { |
57a47f8a KH |
4839 | /* SJIS -> JISX0208 */ |
4840 | ONE_MORE_BYTE (c1); | |
4841 | if (c1 < 0x40 || c1 == 0x7F || c1 > 0xFC) | |
24a73b0a | 4842 | goto invalid_code; |
57a47f8a KH |
4843 | c = (c << 8) | c1; |
4844 | SJIS_TO_JIS (c); | |
4845 | charset = charset_kanji; | |
4846 | } | |
4847 | else if (c <= 0xFC && charset_kanji2) | |
4848 | { | |
c6876370 | 4849 | /* SJIS -> JISX0213-2 */ |
57a47f8a KH |
4850 | ONE_MORE_BYTE (c1); |
4851 | if (c1 < 0x40 || c1 == 0x7F || c1 > 0xFC) | |
24a73b0a | 4852 | goto invalid_code; |
57a47f8a KH |
4853 | c = (c << 8) | c1; |
4854 | SJIS_TO_JIS2 (c); | |
4855 | charset = charset_kanji2; | |
df7492f9 | 4856 | } |
57a47f8a KH |
4857 | else |
4858 | goto invalid_code; | |
24a73b0a KH |
4859 | if (charset->id != charset_ascii |
4860 | && last_id != charset->id) | |
4861 | { | |
4862 | if (last_id != charset_ascii) | |
69a80ea3 | 4863 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
24a73b0a KH |
4864 | last_id = charset->id; |
4865 | last_offset = char_offset; | |
4866 | } | |
4867 | CODING_DECODE_CHAR (coding, src, src_base, src_end, charset, c, c); | |
df7492f9 | 4868 | *charbuf++ = c; |
ff0dacd7 | 4869 | char_offset++; |
df7492f9 | 4870 | continue; |
b73bfc1c | 4871 | |
df7492f9 KH |
4872 | invalid_code: |
4873 | src = src_base; | |
4874 | consumed_chars = consumed_chars_base; | |
4875 | ONE_MORE_BYTE (c); | |
065e3595 | 4876 | *charbuf++ = c < 0 ? -c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 4877 | char_offset++; |
df7492f9 KH |
4878 | coding->errors++; |
4879 | } | |
fa42c37f | 4880 | |
df7492f9 | 4881 | no_more_source: |
ff0dacd7 | 4882 | if (last_id != charset_ascii) |
69a80ea3 | 4883 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
4884 | coding->consumed_char += consumed_chars_base; |
4885 | coding->consumed = src_base - coding->source; | |
4886 | coding->charbuf_used = charbuf - coding->charbuf; | |
fa42c37f KH |
4887 | } |
4888 | ||
b73bfc1c | 4889 | static void |
df7492f9 | 4890 | decode_coding_big5 (coding) |
4ed46869 | 4891 | struct coding_system *coding; |
4ed46869 | 4892 | { |
8f924df7 KH |
4893 | const unsigned char *src = coding->source + coding->consumed; |
4894 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
4895 | const unsigned char *src_base; | |
69a80ea3 | 4896 | int *charbuf = coding->charbuf + coding->charbuf_used; |
df80c7f0 KH |
4897 | /* We may produce one charset annocation in one loop and one more at |
4898 | the end. */ | |
69a80ea3 | 4899 | int *charbuf_end |
df80c7f0 | 4900 | = coding->charbuf + coding->charbuf_size - (MAX_ANNOTATION_LENGTH * 2); |
df7492f9 KH |
4901 | int consumed_chars = 0, consumed_chars_base; |
4902 | int multibytep = coding->src_multibyte; | |
4903 | struct charset *charset_roman, *charset_big5; | |
24a73b0a | 4904 | Lisp_Object attrs, charset_list, val; |
ff0dacd7 KH |
4905 | int char_offset = coding->produced_char; |
4906 | int last_offset = char_offset; | |
4907 | int last_id = charset_ascii; | |
0a9564cb EZ |
4908 | int eol_crlf = |
4909 | !inhibit_eol_conversion && EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); | |
119852e7 | 4910 | int byte_after_cr = -1; |
df7492f9 | 4911 | |
24a73b0a | 4912 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4913 | val = charset_list; |
4914 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
4915 | charset_big5 = CHARSET_FROM_ID (XINT (XCAR (val))); | |
4ed46869 | 4916 | |
b73bfc1c | 4917 | while (1) |
4ed46869 | 4918 | { |
df7492f9 | 4919 | int c, c1; |
24a73b0a | 4920 | struct charset *charset; |
b73bfc1c KH |
4921 | |
4922 | src_base = src; | |
df7492f9 KH |
4923 | consumed_chars_base = consumed_chars; |
4924 | ||
4925 | if (charbuf >= charbuf_end) | |
b71f6f73 KH |
4926 | { |
4927 | if (byte_after_cr >= 0) | |
4928 | src_base--; | |
4929 | break; | |
4930 | } | |
df7492f9 | 4931 | |
119852e7 | 4932 | if (byte_after_cr >= 0) |
14daee73 | 4933 | c = byte_after_cr, byte_after_cr = -1; |
119852e7 KH |
4934 | else |
4935 | ONE_MORE_BYTE (c); | |
b73bfc1c | 4936 | |
065e3595 KH |
4937 | if (c < 0) |
4938 | goto invalid_code; | |
24a73b0a | 4939 | if (c < 0x80) |
119852e7 | 4940 | { |
14daee73 | 4941 | if (eol_crlf && c == '\r') |
119852e7 KH |
4942 | ONE_MORE_BYTE (byte_after_cr); |
4943 | charset = charset_roman; | |
4944 | } | |
24a73b0a | 4945 | else |
4ed46869 | 4946 | { |
24a73b0a KH |
4947 | /* BIG5 -> Big5 */ |
4948 | if (c < 0xA1 || c > 0xFE) | |
4949 | goto invalid_code; | |
4950 | ONE_MORE_BYTE (c1); | |
4951 | if (c1 < 0x40 || (c1 > 0x7E && c1 < 0xA1) || c1 > 0xFE) | |
4952 | goto invalid_code; | |
4953 | c = c << 8 | c1; | |
4954 | charset = charset_big5; | |
4ed46869 | 4955 | } |
24a73b0a KH |
4956 | if (charset->id != charset_ascii |
4957 | && last_id != charset->id) | |
df7492f9 | 4958 | { |
24a73b0a | 4959 | if (last_id != charset_ascii) |
69a80ea3 | 4960 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
24a73b0a KH |
4961 | last_id = charset->id; |
4962 | last_offset = char_offset; | |
4ed46869 | 4963 | } |
24a73b0a | 4964 | CODING_DECODE_CHAR (coding, src, src_base, src_end, charset, c, c); |
df7492f9 | 4965 | *charbuf++ = c; |
ff0dacd7 | 4966 | char_offset++; |
fb88bf2d KH |
4967 | continue; |
4968 | ||
df7492f9 | 4969 | invalid_code: |
4ed46869 | 4970 | src = src_base; |
df7492f9 KH |
4971 | consumed_chars = consumed_chars_base; |
4972 | ONE_MORE_BYTE (c); | |
065e3595 | 4973 | *charbuf++ = c < 0 ? -c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 4974 | char_offset++; |
df7492f9 | 4975 | coding->errors++; |
fb88bf2d | 4976 | } |
d46c5b12 | 4977 | |
df7492f9 | 4978 | no_more_source: |
ff0dacd7 | 4979 | if (last_id != charset_ascii) |
69a80ea3 | 4980 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
4981 | coding->consumed_char += consumed_chars_base; |
4982 | coding->consumed = src_base - coding->source; | |
4983 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
4984 | } |
4985 | ||
4986 | /* See the above "GENERAL NOTES on `encode_coding_XXX ()' functions". | |
b73bfc1c KH |
4987 | This function can encode charsets `ascii', `katakana-jisx0201', |
4988 | `japanese-jisx0208', `chinese-big5-1', and `chinese-big5-2'. We | |
4989 | are sure that all these charsets are registered as official charset | |
4ed46869 KH |
4990 | (i.e. do not have extended leading-codes). Characters of other |
4991 | charsets are produced without any encoding. If SJIS_P is 1, encode | |
4992 | SJIS text, else encode BIG5 text. */ | |
4993 | ||
df7492f9 KH |
4994 | static int |
4995 | encode_coding_sjis (coding) | |
4ed46869 | 4996 | struct coding_system *coding; |
4ed46869 | 4997 | { |
df7492f9 KH |
4998 | int multibytep = coding->dst_multibyte; |
4999 | int *charbuf = coding->charbuf; | |
5000 | int *charbuf_end = charbuf + coding->charbuf_used; | |
5001 | unsigned char *dst = coding->destination + coding->produced; | |
5002 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
5003 | int safe_room = 4; | |
5004 | int produced_chars = 0; | |
24a73b0a | 5005 | Lisp_Object attrs, charset_list, val; |
df7492f9 KH |
5006 | int ascii_compatible; |
5007 | struct charset *charset_roman, *charset_kanji, *charset_kana; | |
57a47f8a | 5008 | struct charset *charset_kanji2; |
df7492f9 | 5009 | int c; |
a5d301df | 5010 | |
24a73b0a | 5011 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
5012 | val = charset_list; |
5013 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
5014 | charset_kana = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
57a47f8a KH |
5015 | charset_kanji = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
5016 | charset_kanji2 = NILP (val) ? NULL : CHARSET_FROM_ID (XINT (XCAR (val))); | |
4ed46869 | 5017 | |
df7492f9 | 5018 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); |
93dec019 | 5019 | |
df7492f9 KH |
5020 | while (charbuf < charbuf_end) |
5021 | { | |
5022 | ASSURE_DESTINATION (safe_room); | |
5023 | c = *charbuf++; | |
b73bfc1c | 5024 | /* Now encode the character C. */ |
df7492f9 KH |
5025 | if (ASCII_CHAR_P (c) && ascii_compatible) |
5026 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d KH |
5027 | else if (CHAR_BYTE8_P (c)) |
5028 | { | |
5029 | c = CHAR_TO_BYTE8 (c); | |
5030 | EMIT_ONE_BYTE (c); | |
5031 | } | |
df7492f9 | 5032 | else |
b73bfc1c | 5033 | { |
df7492f9 KH |
5034 | unsigned code; |
5035 | struct charset *charset = char_charset (c, charset_list, &code); | |
5036 | ||
5037 | if (!charset) | |
4ed46869 | 5038 | { |
41cbe562 | 5039 | if (coding->mode & CODING_MODE_SAFE_ENCODING) |
b73bfc1c | 5040 | { |
41cbe562 KH |
5041 | code = CODING_INHIBIT_CHARACTER_SUBSTITUTION; |
5042 | charset = CHARSET_FROM_ID (charset_ascii); | |
b73bfc1c | 5043 | } |
41cbe562 | 5044 | else |
b73bfc1c | 5045 | { |
41cbe562 KH |
5046 | c = coding->default_char; |
5047 | charset = char_charset (c, charset_list, &code); | |
b73bfc1c | 5048 | } |
b73bfc1c | 5049 | } |
df7492f9 KH |
5050 | if (code == CHARSET_INVALID_CODE (charset)) |
5051 | abort (); | |
5052 | if (charset == charset_kanji) | |
5053 | { | |
5054 | int c1, c2; | |
5055 | JIS_TO_SJIS (code); | |
5056 | c1 = code >> 8, c2 = code & 0xFF; | |
5057 | EMIT_TWO_BYTES (c1, c2); | |
5058 | } | |
5059 | else if (charset == charset_kana) | |
5060 | EMIT_ONE_BYTE (code | 0x80); | |
57a47f8a KH |
5061 | else if (charset_kanji2 && charset == charset_kanji2) |
5062 | { | |
5063 | int c1, c2; | |
5064 | ||
5065 | c1 = code >> 8; | |
f07190ca KH |
5066 | if (c1 == 0x21 || (c1 >= 0x23 && c1 <= 0x25) |
5067 | || c1 == 0x28 | |
57a47f8a KH |
5068 | || (c1 >= 0x2C && c1 <= 0x2F) || c1 >= 0x6E) |
5069 | { | |
5070 | JIS_TO_SJIS2 (code); | |
5071 | c1 = code >> 8, c2 = code & 0xFF; | |
5072 | EMIT_TWO_BYTES (c1, c2); | |
5073 | } | |
5074 | else | |
5075 | EMIT_ONE_ASCII_BYTE (code & 0x7F); | |
5076 | } | |
df7492f9 KH |
5077 | else |
5078 | EMIT_ONE_ASCII_BYTE (code & 0x7F); | |
5079 | } | |
5080 | } | |
065e3595 | 5081 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
5082 | coding->produced_char += produced_chars; |
5083 | coding->produced = dst - coding->destination; | |
5084 | return 0; | |
5085 | } | |
5086 | ||
5087 | static int | |
5088 | encode_coding_big5 (coding) | |
5089 | struct coding_system *coding; | |
5090 | { | |
5091 | int multibytep = coding->dst_multibyte; | |
5092 | int *charbuf = coding->charbuf; | |
5093 | int *charbuf_end = charbuf + coding->charbuf_used; | |
5094 | unsigned char *dst = coding->destination + coding->produced; | |
5095 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
5096 | int safe_room = 4; | |
5097 | int produced_chars = 0; | |
24a73b0a | 5098 | Lisp_Object attrs, charset_list, val; |
df7492f9 KH |
5099 | int ascii_compatible; |
5100 | struct charset *charset_roman, *charset_big5; | |
5101 | int c; | |
5102 | ||
24a73b0a | 5103 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
5104 | val = charset_list; |
5105 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
5106 | charset_big5 = CHARSET_FROM_ID (XINT (XCAR (val))); | |
5107 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); | |
5108 | ||
5109 | while (charbuf < charbuf_end) | |
5110 | { | |
5111 | ASSURE_DESTINATION (safe_room); | |
5112 | c = *charbuf++; | |
5113 | /* Now encode the character C. */ | |
5114 | if (ASCII_CHAR_P (c) && ascii_compatible) | |
5115 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d KH |
5116 | else if (CHAR_BYTE8_P (c)) |
5117 | { | |
5118 | c = CHAR_TO_BYTE8 (c); | |
5119 | EMIT_ONE_BYTE (c); | |
b73bfc1c KH |
5120 | } |
5121 | else | |
5122 | { | |
df7492f9 KH |
5123 | unsigned code; |
5124 | struct charset *charset = char_charset (c, charset_list, &code); | |
5125 | ||
5126 | if (! charset) | |
b73bfc1c | 5127 | { |
41cbe562 | 5128 | if (coding->mode & CODING_MODE_SAFE_ENCODING) |
b73bfc1c | 5129 | { |
41cbe562 KH |
5130 | code = CODING_INHIBIT_CHARACTER_SUBSTITUTION; |
5131 | charset = CHARSET_FROM_ID (charset_ascii); | |
b73bfc1c | 5132 | } |
41cbe562 | 5133 | else |
0eecad43 | 5134 | { |
41cbe562 KH |
5135 | c = coding->default_char; |
5136 | charset = char_charset (c, charset_list, &code); | |
0eecad43 | 5137 | } |
4ed46869 | 5138 | } |
df7492f9 KH |
5139 | if (code == CHARSET_INVALID_CODE (charset)) |
5140 | abort (); | |
5141 | if (charset == charset_big5) | |
b73bfc1c | 5142 | { |
df7492f9 KH |
5143 | int c1, c2; |
5144 | ||
5145 | c1 = code >> 8, c2 = code & 0xFF; | |
5146 | EMIT_TWO_BYTES (c1, c2); | |
b73bfc1c | 5147 | } |
df7492f9 KH |
5148 | else |
5149 | EMIT_ONE_ASCII_BYTE (code & 0x7F); | |
4ed46869 | 5150 | } |
4ed46869 | 5151 | } |
065e3595 | 5152 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
5153 | coding->produced_char += produced_chars; |
5154 | coding->produced = dst - coding->destination; | |
5155 | return 0; | |
4ed46869 KH |
5156 | } |
5157 | ||
5158 | \f | |
df7492f9 | 5159 | /*** 10. CCL handlers ***/ |
1397dc18 KH |
5160 | |
5161 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
5162 | Check if a text is encoded in a coding system of which | |
5163 | encoder/decoder are written in CCL program. If it is, return | |
df7492f9 | 5164 | CATEGORY_MASK_CCL, else return 0. */ |
1397dc18 | 5165 | |
0a28aafb | 5166 | static int |
ff0dacd7 | 5167 | detect_coding_ccl (coding, detect_info) |
df7492f9 | 5168 | struct coding_system *coding; |
ff0dacd7 | 5169 | struct coding_detection_info *detect_info; |
1397dc18 | 5170 | { |
065e3595 | 5171 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 5172 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
5173 | int multibytep = coding->src_multibyte; |
5174 | int consumed_chars = 0; | |
5175 | int found = 0; | |
0e219d54 | 5176 | unsigned char *valids; |
df7492f9 KH |
5177 | int head_ascii = coding->head_ascii; |
5178 | Lisp_Object attrs; | |
5179 | ||
ff0dacd7 KH |
5180 | detect_info->checked |= CATEGORY_MASK_CCL; |
5181 | ||
df7492f9 | 5182 | coding = &coding_categories[coding_category_ccl]; |
0e219d54 | 5183 | valids = CODING_CCL_VALIDS (coding); |
df7492f9 KH |
5184 | attrs = CODING_ID_ATTRS (coding->id); |
5185 | if (! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
5186 | src += head_ascii; | |
1397dc18 | 5187 | |
b73bfc1c | 5188 | while (1) |
1397dc18 | 5189 | { |
df7492f9 | 5190 | int c; |
065e3595 KH |
5191 | |
5192 | src_base = src; | |
df7492f9 | 5193 | ONE_MORE_BYTE (c); |
065e3595 | 5194 | if (c < 0 || ! valids[c]) |
df7492f9 | 5195 | break; |
ff0dacd7 KH |
5196 | if ((valids[c] > 1)) |
5197 | found = CATEGORY_MASK_CCL; | |
df7492f9 | 5198 | } |
ff0dacd7 | 5199 | detect_info->rejected |= CATEGORY_MASK_CCL; |
df7492f9 KH |
5200 | return 0; |
5201 | ||
5202 | no_more_source: | |
ff0dacd7 KH |
5203 | detect_info->found |= found; |
5204 | return 1; | |
df7492f9 KH |
5205 | } |
5206 | ||
5207 | static void | |
5208 | decode_coding_ccl (coding) | |
5209 | struct coding_system *coding; | |
5210 | { | |
7c78e542 | 5211 | const unsigned char *src = coding->source + coding->consumed; |
8f924df7 | 5212 | const unsigned char *src_end = coding->source + coding->src_bytes; |
69a80ea3 KH |
5213 | int *charbuf = coding->charbuf + coding->charbuf_used; |
5214 | int *charbuf_end = coding->charbuf + coding->charbuf_size; | |
df7492f9 KH |
5215 | int consumed_chars = 0; |
5216 | int multibytep = coding->src_multibyte; | |
5217 | struct ccl_program ccl; | |
5218 | int source_charbuf[1024]; | |
5219 | int source_byteidx[1024]; | |
24a73b0a | 5220 | Lisp_Object attrs, charset_list; |
df7492f9 | 5221 | |
24a73b0a | 5222 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
5223 | setup_ccl_program (&ccl, CODING_CCL_DECODER (coding)); |
5224 | ||
5225 | while (src < src_end) | |
5226 | { | |
7c78e542 | 5227 | const unsigned char *p = src; |
df7492f9 KH |
5228 | int *source, *source_end; |
5229 | int i = 0; | |
5230 | ||
5231 | if (multibytep) | |
5232 | while (i < 1024 && p < src_end) | |
5233 | { | |
5234 | source_byteidx[i] = p - src; | |
5235 | source_charbuf[i++] = STRING_CHAR_ADVANCE (p); | |
5236 | } | |
5237 | else | |
5238 | while (i < 1024 && p < src_end) | |
5239 | source_charbuf[i++] = *p++; | |
8f924df7 | 5240 | |
df7492f9 KH |
5241 | if (p == src_end && coding->mode & CODING_MODE_LAST_BLOCK) |
5242 | ccl.last_block = 1; | |
5243 | ||
5244 | source = source_charbuf; | |
5245 | source_end = source + i; | |
5246 | while (source < source_end) | |
5247 | { | |
5248 | ccl_driver (&ccl, source, charbuf, | |
8dcbea82 KH |
5249 | source_end - source, charbuf_end - charbuf, |
5250 | charset_list); | |
df7492f9 KH |
5251 | source += ccl.consumed; |
5252 | charbuf += ccl.produced; | |
5253 | if (ccl.status != CCL_STAT_SUSPEND_BY_DST) | |
5254 | break; | |
5255 | } | |
5256 | if (source < source_end) | |
5257 | src += source_byteidx[source - source_charbuf]; | |
5258 | else | |
5259 | src = p; | |
5260 | consumed_chars += source - source_charbuf; | |
5261 | ||
5262 | if (ccl.status != CCL_STAT_SUSPEND_BY_SRC | |
5263 | && ccl.status != CODING_RESULT_INSUFFICIENT_SRC) | |
5264 | break; | |
5265 | } | |
5266 | ||
5267 | switch (ccl.status) | |
5268 | { | |
5269 | case CCL_STAT_SUSPEND_BY_SRC: | |
065e3595 | 5270 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_SRC); |
df7492f9 KH |
5271 | break; |
5272 | case CCL_STAT_SUSPEND_BY_DST: | |
5273 | break; | |
5274 | case CCL_STAT_QUIT: | |
5275 | case CCL_STAT_INVALID_CMD: | |
065e3595 | 5276 | record_conversion_result (coding, CODING_RESULT_INTERRUPT); |
df7492f9 KH |
5277 | break; |
5278 | default: | |
065e3595 | 5279 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
5280 | break; |
5281 | } | |
5282 | coding->consumed_char += consumed_chars; | |
5283 | coding->consumed = src - coding->source; | |
5284 | coding->charbuf_used = charbuf - coding->charbuf; | |
5285 | } | |
5286 | ||
5287 | static int | |
5288 | encode_coding_ccl (coding) | |
5289 | struct coding_system *coding; | |
5290 | { | |
5291 | struct ccl_program ccl; | |
5292 | int multibytep = coding->dst_multibyte; | |
5293 | int *charbuf = coding->charbuf; | |
5294 | int *charbuf_end = charbuf + coding->charbuf_used; | |
5295 | unsigned char *dst = coding->destination + coding->produced; | |
5296 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
df7492f9 KH |
5297 | int destination_charbuf[1024]; |
5298 | int i, produced_chars = 0; | |
24a73b0a | 5299 | Lisp_Object attrs, charset_list; |
df7492f9 | 5300 | |
24a73b0a | 5301 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
5302 | setup_ccl_program (&ccl, CODING_CCL_ENCODER (coding)); |
5303 | ||
5304 | ccl.last_block = coding->mode & CODING_MODE_LAST_BLOCK; | |
5305 | ccl.dst_multibyte = coding->dst_multibyte; | |
5306 | ||
8cffd3e7 | 5307 | while (charbuf < charbuf_end) |
df7492f9 | 5308 | { |
df7492f9 | 5309 | ccl_driver (&ccl, charbuf, destination_charbuf, |
8cffd3e7 | 5310 | charbuf_end - charbuf, 1024, charset_list); |
df7492f9 | 5311 | if (multibytep) |
8cffd3e7 KH |
5312 | { |
5313 | ASSURE_DESTINATION (ccl.produced * 2); | |
5314 | for (i = 0; i < ccl.produced; i++) | |
5315 | EMIT_ONE_BYTE (destination_charbuf[i] & 0xFF); | |
5316 | } | |
df7492f9 KH |
5317 | else |
5318 | { | |
8cffd3e7 | 5319 | ASSURE_DESTINATION (ccl.produced); |
3ed051d4 | 5320 | for (i = 0; i < ccl.produced; i++) |
df7492f9 KH |
5321 | *dst++ = destination_charbuf[i] & 0xFF; |
5322 | produced_chars += ccl.produced; | |
5323 | } | |
8cffd3e7 KH |
5324 | charbuf += ccl.consumed; |
5325 | if (ccl.status == CCL_STAT_QUIT | |
5326 | || ccl.status == CCL_STAT_INVALID_CMD) | |
5327 | break; | |
df7492f9 KH |
5328 | } |
5329 | ||
5330 | switch (ccl.status) | |
5331 | { | |
5332 | case CCL_STAT_SUSPEND_BY_SRC: | |
065e3595 | 5333 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_SRC); |
df7492f9 KH |
5334 | break; |
5335 | case CCL_STAT_SUSPEND_BY_DST: | |
065e3595 | 5336 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_DST); |
df7492f9 KH |
5337 | break; |
5338 | case CCL_STAT_QUIT: | |
5339 | case CCL_STAT_INVALID_CMD: | |
065e3595 | 5340 | record_conversion_result (coding, CODING_RESULT_INTERRUPT); |
df7492f9 KH |
5341 | break; |
5342 | default: | |
065e3595 | 5343 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 | 5344 | break; |
1397dc18 | 5345 | } |
df7492f9 KH |
5346 | |
5347 | coding->produced_char += produced_chars; | |
5348 | coding->produced = dst - coding->destination; | |
5349 | return 0; | |
1397dc18 KH |
5350 | } |
5351 | ||
df7492f9 | 5352 | |
1397dc18 | 5353 | \f |
df7492f9 | 5354 | /*** 10, 11. no-conversion handlers ***/ |
4ed46869 | 5355 | |
b73bfc1c | 5356 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". */ |
4ed46869 | 5357 | |
b73bfc1c | 5358 | static void |
df7492f9 | 5359 | decode_coding_raw_text (coding) |
4ed46869 | 5360 | struct coding_system *coding; |
4ed46869 | 5361 | { |
0a9564cb EZ |
5362 | int eol_crlf = |
5363 | !inhibit_eol_conversion && EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); | |
119852e7 | 5364 | |
df7492f9 | 5365 | coding->chars_at_source = 1; |
119852e7 KH |
5366 | coding->consumed_char = coding->src_chars; |
5367 | coding->consumed = coding->src_bytes; | |
5368 | if (eol_crlf && coding->source[coding->src_bytes - 1] == '\r') | |
5369 | { | |
5370 | coding->consumed_char--; | |
5371 | coding->consumed--; | |
5372 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_SRC); | |
5373 | } | |
5374 | else | |
5375 | record_conversion_result (coding, CODING_RESULT_SUCCESS); | |
df7492f9 | 5376 | } |
4ed46869 | 5377 | |
df7492f9 KH |
5378 | static int |
5379 | encode_coding_raw_text (coding) | |
5380 | struct coding_system *coding; | |
5381 | { | |
5382 | int multibytep = coding->dst_multibyte; | |
5383 | int *charbuf = coding->charbuf; | |
5384 | int *charbuf_end = coding->charbuf + coding->charbuf_used; | |
5385 | unsigned char *dst = coding->destination + coding->produced; | |
5386 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
a0ed9b27 | 5387 | int produced_chars = 0; |
b73bfc1c KH |
5388 | int c; |
5389 | ||
df7492f9 | 5390 | if (multibytep) |
b73bfc1c | 5391 | { |
df7492f9 | 5392 | int safe_room = MAX_MULTIBYTE_LENGTH * 2; |
4ed46869 | 5393 | |
df7492f9 KH |
5394 | if (coding->src_multibyte) |
5395 | while (charbuf < charbuf_end) | |
5396 | { | |
5397 | ASSURE_DESTINATION (safe_room); | |
5398 | c = *charbuf++; | |
5399 | if (ASCII_CHAR_P (c)) | |
5400 | EMIT_ONE_ASCII_BYTE (c); | |
5401 | else if (CHAR_BYTE8_P (c)) | |
5402 | { | |
5403 | c = CHAR_TO_BYTE8 (c); | |
5404 | EMIT_ONE_BYTE (c); | |
5405 | } | |
5406 | else | |
5407 | { | |
5408 | unsigned char str[MAX_MULTIBYTE_LENGTH], *p0 = str, *p1 = str; | |
93dec019 | 5409 | |
df7492f9 KH |
5410 | CHAR_STRING_ADVANCE (c, p1); |
5411 | while (p0 < p1) | |
9d123124 KH |
5412 | { |
5413 | EMIT_ONE_BYTE (*p0); | |
5414 | p0++; | |
5415 | } | |
df7492f9 KH |
5416 | } |
5417 | } | |
b73bfc1c | 5418 | else |
df7492f9 KH |
5419 | while (charbuf < charbuf_end) |
5420 | { | |
5421 | ASSURE_DESTINATION (safe_room); | |
5422 | c = *charbuf++; | |
5423 | EMIT_ONE_BYTE (c); | |
5424 | } | |
5425 | } | |
5426 | else | |
4ed46869 | 5427 | { |
df7492f9 | 5428 | if (coding->src_multibyte) |
d46c5b12 | 5429 | { |
df7492f9 KH |
5430 | int safe_room = MAX_MULTIBYTE_LENGTH; |
5431 | ||
5432 | while (charbuf < charbuf_end) | |
d46c5b12 | 5433 | { |
df7492f9 KH |
5434 | ASSURE_DESTINATION (safe_room); |
5435 | c = *charbuf++; | |
5436 | if (ASCII_CHAR_P (c)) | |
5437 | *dst++ = c; | |
5438 | else if (CHAR_BYTE8_P (c)) | |
5439 | *dst++ = CHAR_TO_BYTE8 (c); | |
b73bfc1c | 5440 | else |
df7492f9 | 5441 | CHAR_STRING_ADVANCE (c, dst); |
d46c5b12 KH |
5442 | } |
5443 | } | |
df7492f9 KH |
5444 | else |
5445 | { | |
5446 | ASSURE_DESTINATION (charbuf_end - charbuf); | |
5447 | while (charbuf < charbuf_end && dst < dst_end) | |
5448 | *dst++ = *charbuf++; | |
8f924df7 | 5449 | } |
319a3947 | 5450 | produced_chars = dst - (coding->destination + coding->produced); |
4ed46869 | 5451 | } |
065e3595 | 5452 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
a0ed9b27 | 5453 | coding->produced_char += produced_chars; |
df7492f9 KH |
5454 | coding->produced = dst - coding->destination; |
5455 | return 0; | |
4ed46869 KH |
5456 | } |
5457 | ||
ff0dacd7 KH |
5458 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". |
5459 | Check if a text is encoded in a charset-based coding system. If it | |
5460 | is, return 1, else return 0. */ | |
5461 | ||
0a28aafb | 5462 | static int |
ff0dacd7 | 5463 | detect_coding_charset (coding, detect_info) |
df7492f9 | 5464 | struct coding_system *coding; |
ff0dacd7 | 5465 | struct coding_detection_info *detect_info; |
1397dc18 | 5466 | { |
065e3595 | 5467 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 5468 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
5469 | int multibytep = coding->src_multibyte; |
5470 | int consumed_chars = 0; | |
07295713 | 5471 | Lisp_Object attrs, valids, name; |
584948ac | 5472 | int found = 0; |
716b3fa0 | 5473 | int head_ascii = coding->head_ascii; |
07295713 | 5474 | int check_latin_extra = 0; |
1397dc18 | 5475 | |
ff0dacd7 KH |
5476 | detect_info->checked |= CATEGORY_MASK_CHARSET; |
5477 | ||
df7492f9 KH |
5478 | coding = &coding_categories[coding_category_charset]; |
5479 | attrs = CODING_ID_ATTRS (coding->id); | |
5480 | valids = AREF (attrs, coding_attr_charset_valids); | |
07295713 | 5481 | name = CODING_ID_NAME (coding->id); |
237aabf4 JR |
5482 | if (strncmp ((char *) SDATA (SYMBOL_NAME (name)), |
5483 | "iso-8859-", sizeof ("iso-8859-") - 1) == 0 | |
5484 | || strncmp ((char *) SDATA (SYMBOL_NAME (name)), | |
5485 | "iso-latin-", sizeof ("iso-latin-") - 1) == 0) | |
07295713 | 5486 | check_latin_extra = 1; |
237aabf4 | 5487 | |
df7492f9 | 5488 | if (! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) |
716b3fa0 | 5489 | src += head_ascii; |
1397dc18 | 5490 | |
b73bfc1c | 5491 | while (1) |
1397dc18 | 5492 | { |
df7492f9 | 5493 | int c; |
716b3fa0 KH |
5494 | Lisp_Object val; |
5495 | struct charset *charset; | |
5496 | int dim, idx; | |
1397dc18 | 5497 | |
065e3595 | 5498 | src_base = src; |
df7492f9 | 5499 | ONE_MORE_BYTE (c); |
065e3595 KH |
5500 | if (c < 0) |
5501 | continue; | |
716b3fa0 KH |
5502 | val = AREF (valids, c); |
5503 | if (NILP (val)) | |
df7492f9 | 5504 | break; |
584948ac | 5505 | if (c >= 0x80) |
07295713 KH |
5506 | { |
5507 | if (c < 0xA0 | |
237aabf4 JR |
5508 | && check_latin_extra |
5509 | && (!VECTORP (Vlatin_extra_code_table) | |
9f0526cb | 5510 | || NILP (XVECTOR (Vlatin_extra_code_table)->contents[c]))) |
07295713 KH |
5511 | break; |
5512 | found = CATEGORY_MASK_CHARSET; | |
5513 | } | |
716b3fa0 KH |
5514 | if (INTEGERP (val)) |
5515 | { | |
5516 | charset = CHARSET_FROM_ID (XFASTINT (val)); | |
5517 | dim = CHARSET_DIMENSION (charset); | |
5518 | for (idx = 1; idx < dim; idx++) | |
5519 | { | |
5520 | if (src == src_end) | |
5521 | goto too_short; | |
5522 | ONE_MORE_BYTE (c); | |
3ed051d4 | 5523 | if (c < charset->code_space[(dim - 1 - idx) * 2] |
716b3fa0 KH |
5524 | || c > charset->code_space[(dim - 1 - idx) * 2 + 1]) |
5525 | break; | |
5526 | } | |
5527 | if (idx < dim) | |
5528 | break; | |
5529 | } | |
5530 | else | |
5531 | { | |
5532 | idx = 1; | |
5533 | for (; CONSP (val); val = XCDR (val)) | |
5534 | { | |
5535 | charset = CHARSET_FROM_ID (XFASTINT (XCAR (val))); | |
5536 | dim = CHARSET_DIMENSION (charset); | |
5537 | while (idx < dim) | |
5538 | { | |
5539 | if (src == src_end) | |
5540 | goto too_short; | |
5541 | ONE_MORE_BYTE (c); | |
5542 | if (c < charset->code_space[(dim - 1 - idx) * 4] | |
5543 | || c > charset->code_space[(dim - 1 - idx) * 4 + 1]) | |
5544 | break; | |
5545 | idx++; | |
5546 | } | |
5547 | if (idx == dim) | |
5548 | { | |
5549 | val = Qnil; | |
5550 | break; | |
5551 | } | |
5552 | } | |
5553 | if (CONSP (val)) | |
5554 | break; | |
5555 | } | |
df7492f9 | 5556 | } |
716b3fa0 | 5557 | too_short: |
ff0dacd7 | 5558 | detect_info->rejected |= CATEGORY_MASK_CHARSET; |
df7492f9 | 5559 | return 0; |
4ed46869 | 5560 | |
df7492f9 | 5561 | no_more_source: |
ff0dacd7 KH |
5562 | detect_info->found |= found; |
5563 | return 1; | |
df7492f9 | 5564 | } |
b73bfc1c | 5565 | |
b73bfc1c | 5566 | static void |
df7492f9 | 5567 | decode_coding_charset (coding) |
4ed46869 | 5568 | struct coding_system *coding; |
4ed46869 | 5569 | { |
8f924df7 KH |
5570 | const unsigned char *src = coding->source + coding->consumed; |
5571 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
5572 | const unsigned char *src_base; | |
69a80ea3 | 5573 | int *charbuf = coding->charbuf + coding->charbuf_used; |
df80c7f0 KH |
5574 | /* We may produce one charset annocation in one loop and one more at |
5575 | the end. */ | |
69a80ea3 | 5576 | int *charbuf_end |
df80c7f0 | 5577 | = coding->charbuf + coding->charbuf_size - (MAX_ANNOTATION_LENGTH * 2); |
df7492f9 KH |
5578 | int consumed_chars = 0, consumed_chars_base; |
5579 | int multibytep = coding->src_multibyte; | |
24a73b0a | 5580 | Lisp_Object attrs, charset_list, valids; |
ff0dacd7 KH |
5581 | int char_offset = coding->produced_char; |
5582 | int last_offset = char_offset; | |
5583 | int last_id = charset_ascii; | |
0a9564cb EZ |
5584 | int eol_crlf = |
5585 | !inhibit_eol_conversion && EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); | |
119852e7 | 5586 | int byte_after_cr = -1; |
df7492f9 | 5587 | |
24a73b0a | 5588 | CODING_GET_INFO (coding, attrs, charset_list); |
4eb6d3f1 | 5589 | valids = AREF (attrs, coding_attr_charset_valids); |
b73bfc1c | 5590 | |
df7492f9 | 5591 | while (1) |
4ed46869 | 5592 | { |
4eb6d3f1 | 5593 | int c; |
24a73b0a KH |
5594 | Lisp_Object val; |
5595 | struct charset *charset; | |
5596 | int dim; | |
5597 | int len = 1; | |
5598 | unsigned code; | |
df7492f9 KH |
5599 | |
5600 | src_base = src; | |
5601 | consumed_chars_base = consumed_chars; | |
b73bfc1c | 5602 | |
df7492f9 | 5603 | if (charbuf >= charbuf_end) |
b71f6f73 KH |
5604 | { |
5605 | if (byte_after_cr >= 0) | |
5606 | src_base--; | |
5607 | break; | |
5608 | } | |
df7492f9 | 5609 | |
119852e7 KH |
5610 | if (byte_after_cr >= 0) |
5611 | { | |
5612 | c = byte_after_cr; | |
5613 | byte_after_cr = -1; | |
5614 | } | |
5615 | else | |
5616 | { | |
5617 | ONE_MORE_BYTE (c); | |
5618 | if (eol_crlf && c == '\r') | |
5619 | ONE_MORE_BYTE (byte_after_cr); | |
5620 | } | |
065e3595 KH |
5621 | if (c < 0) |
5622 | goto invalid_code; | |
24a73b0a KH |
5623 | code = c; |
5624 | ||
5625 | val = AREF (valids, c); | |
1b17adfd | 5626 | if (! INTEGERP (val) && ! CONSP (val)) |
24a73b0a KH |
5627 | goto invalid_code; |
5628 | if (INTEGERP (val)) | |
d46c5b12 | 5629 | { |
24a73b0a KH |
5630 | charset = CHARSET_FROM_ID (XFASTINT (val)); |
5631 | dim = CHARSET_DIMENSION (charset); | |
5632 | while (len < dim) | |
b73bfc1c | 5633 | { |
24a73b0a KH |
5634 | ONE_MORE_BYTE (c); |
5635 | code = (code << 8) | c; | |
5636 | len++; | |
b73bfc1c | 5637 | } |
24a73b0a KH |
5638 | CODING_DECODE_CHAR (coding, src, src_base, src_end, |
5639 | charset, code, c); | |
d46c5b12 | 5640 | } |
df7492f9 | 5641 | else |
d46c5b12 | 5642 | { |
24a73b0a KH |
5643 | /* VAL is a list of charset IDs. It is assured that the |
5644 | list is sorted by charset dimensions (smaller one | |
5645 | comes first). */ | |
5646 | while (CONSP (val)) | |
4eb6d3f1 | 5647 | { |
24a73b0a | 5648 | charset = CHARSET_FROM_ID (XFASTINT (XCAR (val))); |
c7c66a95 | 5649 | dim = CHARSET_DIMENSION (charset); |
f9d71dcd | 5650 | while (len < dim) |
4eb6d3f1 | 5651 | { |
acb2a965 KH |
5652 | ONE_MORE_BYTE (c); |
5653 | code = (code << 8) | c; | |
f9d71dcd | 5654 | len++; |
4eb6d3f1 | 5655 | } |
24a73b0a KH |
5656 | CODING_DECODE_CHAR (coding, src, src_base, |
5657 | src_end, charset, code, c); | |
5658 | if (c >= 0) | |
5659 | break; | |
5660 | val = XCDR (val); | |
ff0dacd7 | 5661 | } |
d46c5b12 | 5662 | } |
24a73b0a KH |
5663 | if (c < 0) |
5664 | goto invalid_code; | |
5665 | if (charset->id != charset_ascii | |
5666 | && last_id != charset->id) | |
5667 | { | |
5668 | if (last_id != charset_ascii) | |
69a80ea3 | 5669 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
24a73b0a KH |
5670 | last_id = charset->id; |
5671 | last_offset = char_offset; | |
5672 | } | |
5673 | ||
df7492f9 | 5674 | *charbuf++ = c; |
ff0dacd7 | 5675 | char_offset++; |
df7492f9 KH |
5676 | continue; |
5677 | ||
5678 | invalid_code: | |
5679 | src = src_base; | |
5680 | consumed_chars = consumed_chars_base; | |
5681 | ONE_MORE_BYTE (c); | |
065e3595 | 5682 | *charbuf++ = c < 0 ? -c : ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 5683 | char_offset++; |
df7492f9 | 5684 | coding->errors++; |
4ed46869 KH |
5685 | } |
5686 | ||
df7492f9 | 5687 | no_more_source: |
ff0dacd7 | 5688 | if (last_id != charset_ascii) |
69a80ea3 | 5689 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
5690 | coding->consumed_char += consumed_chars_base; |
5691 | coding->consumed = src_base - coding->source; | |
5692 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
5693 | } |
5694 | ||
df7492f9 KH |
5695 | static int |
5696 | encode_coding_charset (coding) | |
4ed46869 | 5697 | struct coding_system *coding; |
4ed46869 | 5698 | { |
df7492f9 KH |
5699 | int multibytep = coding->dst_multibyte; |
5700 | int *charbuf = coding->charbuf; | |
5701 | int *charbuf_end = charbuf + coding->charbuf_used; | |
5702 | unsigned char *dst = coding->destination + coding->produced; | |
5703 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
5704 | int safe_room = MAX_MULTIBYTE_LENGTH; | |
5705 | int produced_chars = 0; | |
24a73b0a | 5706 | Lisp_Object attrs, charset_list; |
df7492f9 | 5707 | int ascii_compatible; |
b73bfc1c | 5708 | int c; |
b73bfc1c | 5709 | |
24a73b0a | 5710 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 | 5711 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); |
fb88bf2d | 5712 | |
df7492f9 | 5713 | while (charbuf < charbuf_end) |
4ed46869 | 5714 | { |
4eb6d3f1 | 5715 | struct charset *charset; |
df7492f9 | 5716 | unsigned code; |
8f924df7 | 5717 | |
df7492f9 KH |
5718 | ASSURE_DESTINATION (safe_room); |
5719 | c = *charbuf++; | |
5720 | if (ascii_compatible && ASCII_CHAR_P (c)) | |
5721 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d | 5722 | else if (CHAR_BYTE8_P (c)) |
4ed46869 | 5723 | { |
16eafb5d KH |
5724 | c = CHAR_TO_BYTE8 (c); |
5725 | EMIT_ONE_BYTE (c); | |
d46c5b12 | 5726 | } |
d46c5b12 | 5727 | else |
b73bfc1c | 5728 | { |
4eb6d3f1 KH |
5729 | charset = char_charset (c, charset_list, &code); |
5730 | if (charset) | |
5731 | { | |
5732 | if (CHARSET_DIMENSION (charset) == 1) | |
5733 | EMIT_ONE_BYTE (code); | |
5734 | else if (CHARSET_DIMENSION (charset) == 2) | |
5735 | EMIT_TWO_BYTES (code >> 8, code & 0xFF); | |
5736 | else if (CHARSET_DIMENSION (charset) == 3) | |
5737 | EMIT_THREE_BYTES (code >> 16, (code >> 8) & 0xFF, code & 0xFF); | |
5738 | else | |
5739 | EMIT_FOUR_BYTES (code >> 24, (code >> 16) & 0xFF, | |
5740 | (code >> 8) & 0xFF, code & 0xFF); | |
5741 | } | |
5742 | else | |
41cbe562 KH |
5743 | { |
5744 | if (coding->mode & CODING_MODE_SAFE_ENCODING) | |
5745 | c = CODING_INHIBIT_CHARACTER_SUBSTITUTION; | |
5746 | else | |
5747 | c = coding->default_char; | |
5748 | EMIT_ONE_BYTE (c); | |
5749 | } | |
4ed46869 | 5750 | } |
4ed46869 KH |
5751 | } |
5752 | ||
065e3595 | 5753 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
5754 | coding->produced_char += produced_chars; |
5755 | coding->produced = dst - coding->destination; | |
5756 | return 0; | |
4ed46869 KH |
5757 | } |
5758 | ||
5759 | \f | |
1397dc18 | 5760 | /*** 7. C library functions ***/ |
4ed46869 | 5761 | |
df7492f9 KH |
5762 | /* Setup coding context CODING from information about CODING_SYSTEM. |
5763 | If CODING_SYSTEM is nil, `no-conversion' is assumed. If | |
5764 | CODING_SYSTEM is invalid, signal an error. */ | |
4ed46869 | 5765 | |
ec6d2bb8 | 5766 | void |
e0e989f6 KH |
5767 | setup_coding_system (coding_system, coding) |
5768 | Lisp_Object coding_system; | |
4ed46869 KH |
5769 | struct coding_system *coding; |
5770 | { | |
df7492f9 KH |
5771 | Lisp_Object attrs; |
5772 | Lisp_Object eol_type; | |
5773 | Lisp_Object coding_type; | |
4608c386 | 5774 | Lisp_Object val; |
4ed46869 | 5775 | |
df7492f9 | 5776 | if (NILP (coding_system)) |
ae6f73fa | 5777 | coding_system = Qundecided; |
c07c8e12 | 5778 | |
df7492f9 | 5779 | CHECK_CODING_SYSTEM_GET_ID (coding_system, coding->id); |
1f5dbf34 | 5780 | |
df7492f9 | 5781 | attrs = CODING_ID_ATTRS (coding->id); |
0a9564cb | 5782 | eol_type = inhibit_eol_conversion ? Qunix : CODING_ID_EOL_TYPE (coding->id); |
1f5dbf34 | 5783 | |
df7492f9 KH |
5784 | coding->mode = 0; |
5785 | coding->head_ascii = -1; | |
4a015c45 KH |
5786 | if (VECTORP (eol_type)) |
5787 | coding->common_flags = (CODING_REQUIRE_DECODING_MASK | |
5788 | | CODING_REQUIRE_DETECTION_MASK); | |
5789 | else if (! EQ (eol_type, Qunix)) | |
5790 | coding->common_flags = (CODING_REQUIRE_DECODING_MASK | |
5791 | | CODING_REQUIRE_ENCODING_MASK); | |
5792 | else | |
5793 | coding->common_flags = 0; | |
5e5c78be KH |
5794 | if (! NILP (CODING_ATTR_POST_READ (attrs))) |
5795 | coding->common_flags |= CODING_REQUIRE_DECODING_MASK; | |
5796 | if (! NILP (CODING_ATTR_PRE_WRITE (attrs))) | |
5797 | coding->common_flags |= CODING_REQUIRE_ENCODING_MASK; | |
8f924df7 KH |
5798 | if (! NILP (CODING_ATTR_FOR_UNIBYTE (attrs))) |
5799 | coding->common_flags |= CODING_FOR_UNIBYTE_MASK; | |
1f5dbf34 | 5800 | |
df7492f9 | 5801 | val = CODING_ATTR_SAFE_CHARSETS (attrs); |
8f924df7 | 5802 | coding->max_charset_id = SCHARS (val) - 1; |
1b3b981b | 5803 | coding->safe_charsets = SDATA (val); |
df7492f9 | 5804 | coding->default_char = XINT (CODING_ATTR_DEFAULT_CHAR (attrs)); |
624bda09 | 5805 | coding->carryover_bytes = 0; |
4608c386 | 5806 | |
df7492f9 KH |
5807 | coding_type = CODING_ATTR_TYPE (attrs); |
5808 | if (EQ (coding_type, Qundecided)) | |
d46c5b12 | 5809 | { |
df7492f9 KH |
5810 | coding->detector = NULL; |
5811 | coding->decoder = decode_coding_raw_text; | |
5812 | coding->encoder = encode_coding_raw_text; | |
5813 | coding->common_flags |= CODING_REQUIRE_DETECTION_MASK; | |
d46c5b12 | 5814 | } |
df7492f9 | 5815 | else if (EQ (coding_type, Qiso_2022)) |
d46c5b12 | 5816 | { |
df7492f9 KH |
5817 | int i; |
5818 | int flags = XINT (AREF (attrs, coding_attr_iso_flags)); | |
5819 | ||
5820 | /* Invoke graphic register 0 to plane 0. */ | |
5821 | CODING_ISO_INVOCATION (coding, 0) = 0; | |
5822 | /* Invoke graphic register 1 to plane 1 if we can use 8-bit. */ | |
5823 | CODING_ISO_INVOCATION (coding, 1) | |
5824 | = (flags & CODING_ISO_FLAG_SEVEN_BITS ? -1 : 1); | |
5825 | /* Setup the initial status of designation. */ | |
5826 | for (i = 0; i < 4; i++) | |
5827 | CODING_ISO_DESIGNATION (coding, i) = CODING_ISO_INITIAL (coding, i); | |
5828 | /* Not single shifting initially. */ | |
5829 | CODING_ISO_SINGLE_SHIFTING (coding) = 0; | |
5830 | /* Beginning of buffer should also be regarded as bol. */ | |
5831 | CODING_ISO_BOL (coding) = 1; | |
5832 | coding->detector = detect_coding_iso_2022; | |
5833 | coding->decoder = decode_coding_iso_2022; | |
5834 | coding->encoder = encode_coding_iso_2022; | |
5835 | if (flags & CODING_ISO_FLAG_SAFE) | |
5836 | coding->mode |= CODING_MODE_SAFE_ENCODING; | |
d46c5b12 | 5837 | coding->common_flags |
df7492f9 KH |
5838 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK |
5839 | | CODING_REQUIRE_FLUSHING_MASK); | |
5840 | if (flags & CODING_ISO_FLAG_COMPOSITION) | |
5841 | coding->common_flags |= CODING_ANNOTATE_COMPOSITION_MASK; | |
ff0dacd7 KH |
5842 | if (flags & CODING_ISO_FLAG_DESIGNATION) |
5843 | coding->common_flags |= CODING_ANNOTATE_CHARSET_MASK; | |
df7492f9 KH |
5844 | if (flags & CODING_ISO_FLAG_FULL_SUPPORT) |
5845 | { | |
5846 | setup_iso_safe_charsets (attrs); | |
5847 | val = CODING_ATTR_SAFE_CHARSETS (attrs); | |
8f924df7 | 5848 | coding->max_charset_id = SCHARS (val) - 1; |
1b3b981b | 5849 | coding->safe_charsets = SDATA (val); |
df7492f9 KH |
5850 | } |
5851 | CODING_ISO_FLAGS (coding) = flags; | |
e951386e KH |
5852 | CODING_ISO_CMP_STATUS (coding)->state = COMPOSING_NO; |
5853 | CODING_ISO_CMP_STATUS (coding)->method = COMPOSITION_NO; | |
5854 | CODING_ISO_EXTSEGMENT_LEN (coding) = 0; | |
5855 | CODING_ISO_EMBEDDED_UTF_8 (coding) = 0; | |
d46c5b12 | 5856 | } |
df7492f9 | 5857 | else if (EQ (coding_type, Qcharset)) |
d46c5b12 | 5858 | { |
df7492f9 KH |
5859 | coding->detector = detect_coding_charset; |
5860 | coding->decoder = decode_coding_charset; | |
5861 | coding->encoder = encode_coding_charset; | |
d46c5b12 | 5862 | coding->common_flags |
df7492f9 | 5863 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
d46c5b12 | 5864 | } |
df7492f9 | 5865 | else if (EQ (coding_type, Qutf_8)) |
d46c5b12 | 5866 | { |
a470d443 KH |
5867 | val = AREF (attrs, coding_attr_utf_bom); |
5868 | CODING_UTF_8_BOM (coding) = (CONSP (val) ? utf_detect_bom | |
5869 | : EQ (val, Qt) ? utf_with_bom | |
5870 | : utf_without_bom); | |
df7492f9 KH |
5871 | coding->detector = detect_coding_utf_8; |
5872 | coding->decoder = decode_coding_utf_8; | |
5873 | coding->encoder = encode_coding_utf_8; | |
5874 | coding->common_flags | |
5875 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); | |
a470d443 KH |
5876 | if (CODING_UTF_8_BOM (coding) == utf_detect_bom) |
5877 | coding->common_flags |= CODING_REQUIRE_DETECTION_MASK; | |
df7492f9 KH |
5878 | } |
5879 | else if (EQ (coding_type, Qutf_16)) | |
5880 | { | |
a470d443 KH |
5881 | val = AREF (attrs, coding_attr_utf_bom); |
5882 | CODING_UTF_16_BOM (coding) = (CONSP (val) ? utf_detect_bom | |
5883 | : EQ (val, Qt) ? utf_with_bom | |
5884 | : utf_without_bom); | |
df7492f9 | 5885 | val = AREF (attrs, coding_attr_utf_16_endian); |
b49a1807 | 5886 | CODING_UTF_16_ENDIAN (coding) = (EQ (val, Qbig) ? utf_16_big_endian |
df7492f9 | 5887 | : utf_16_little_endian); |
e19c3639 | 5888 | CODING_UTF_16_SURROGATE (coding) = 0; |
df7492f9 KH |
5889 | coding->detector = detect_coding_utf_16; |
5890 | coding->decoder = decode_coding_utf_16; | |
5891 | coding->encoder = encode_coding_utf_16; | |
5892 | coding->common_flags | |
5893 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); | |
a470d443 | 5894 | if (CODING_UTF_16_BOM (coding) == utf_detect_bom) |
b49a1807 | 5895 | coding->common_flags |= CODING_REQUIRE_DETECTION_MASK; |
d46c5b12 | 5896 | } |
df7492f9 | 5897 | else if (EQ (coding_type, Qccl)) |
4ed46869 | 5898 | { |
df7492f9 KH |
5899 | coding->detector = detect_coding_ccl; |
5900 | coding->decoder = decode_coding_ccl; | |
5901 | coding->encoder = encode_coding_ccl; | |
c952af22 | 5902 | coding->common_flags |
df7492f9 KH |
5903 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK |
5904 | | CODING_REQUIRE_FLUSHING_MASK); | |
5905 | } | |
5906 | else if (EQ (coding_type, Qemacs_mule)) | |
5907 | { | |
5908 | coding->detector = detect_coding_emacs_mule; | |
5909 | coding->decoder = decode_coding_emacs_mule; | |
5910 | coding->encoder = encode_coding_emacs_mule; | |
c952af22 | 5911 | coding->common_flags |
df7492f9 | 5912 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
e951386e | 5913 | coding->spec.emacs_mule.full_support = 1; |
df7492f9 KH |
5914 | if (! NILP (AREF (attrs, coding_attr_emacs_mule_full)) |
5915 | && ! EQ (CODING_ATTR_CHARSET_LIST (attrs), Vemacs_mule_charset_list)) | |
5916 | { | |
5917 | Lisp_Object tail, safe_charsets; | |
5918 | int max_charset_id = 0; | |
5919 | ||
5920 | for (tail = Vemacs_mule_charset_list; CONSP (tail); | |
5921 | tail = XCDR (tail)) | |
5922 | if (max_charset_id < XFASTINT (XCAR (tail))) | |
5923 | max_charset_id = XFASTINT (XCAR (tail)); | |
1b3b981b AS |
5924 | safe_charsets = make_uninit_string (max_charset_id + 1); |
5925 | memset (SDATA (safe_charsets), 255, max_charset_id + 1); | |
df7492f9 KH |
5926 | for (tail = Vemacs_mule_charset_list; CONSP (tail); |
5927 | tail = XCDR (tail)) | |
8f924df7 | 5928 | SSET (safe_charsets, XFASTINT (XCAR (tail)), 0); |
df7492f9 | 5929 | coding->max_charset_id = max_charset_id; |
1b3b981b | 5930 | coding->safe_charsets = SDATA (safe_charsets); |
e951386e | 5931 | coding->spec.emacs_mule.full_support = 1; |
df7492f9 | 5932 | } |
e951386e KH |
5933 | coding->spec.emacs_mule.cmp_status.state = COMPOSING_NO; |
5934 | coding->spec.emacs_mule.cmp_status.method = COMPOSITION_NO; | |
df7492f9 KH |
5935 | } |
5936 | else if (EQ (coding_type, Qshift_jis)) | |
5937 | { | |
5938 | coding->detector = detect_coding_sjis; | |
5939 | coding->decoder = decode_coding_sjis; | |
5940 | coding->encoder = encode_coding_sjis; | |
c952af22 | 5941 | coding->common_flags |
df7492f9 KH |
5942 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
5943 | } | |
5944 | else if (EQ (coding_type, Qbig5)) | |
5945 | { | |
5946 | coding->detector = detect_coding_big5; | |
5947 | coding->decoder = decode_coding_big5; | |
5948 | coding->encoder = encode_coding_big5; | |
c952af22 | 5949 | coding->common_flags |
df7492f9 KH |
5950 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
5951 | } | |
5952 | else /* EQ (coding_type, Qraw_text) */ | |
ec6d2bb8 | 5953 | { |
df7492f9 KH |
5954 | coding->detector = NULL; |
5955 | coding->decoder = decode_coding_raw_text; | |
5956 | coding->encoder = encode_coding_raw_text; | |
ea29edf2 KH |
5957 | if (! EQ (eol_type, Qunix)) |
5958 | { | |
5959 | coding->common_flags |= CODING_REQUIRE_DECODING_MASK; | |
5960 | if (! VECTORP (eol_type)) | |
5961 | coding->common_flags |= CODING_REQUIRE_ENCODING_MASK; | |
5962 | } | |
5963 | ||
4ed46869 | 5964 | } |
4ed46869 | 5965 | |
df7492f9 | 5966 | return; |
4ed46869 KH |
5967 | } |
5968 | ||
0ff61e78 KH |
5969 | /* Return a list of charsets supported by CODING. */ |
5970 | ||
5971 | Lisp_Object | |
5972 | coding_charset_list (coding) | |
5973 | struct coding_system *coding; | |
5974 | { | |
35befdaa | 5975 | Lisp_Object attrs, charset_list; |
0ff61e78 KH |
5976 | |
5977 | CODING_GET_INFO (coding, attrs, charset_list); | |
5978 | if (EQ (CODING_ATTR_TYPE (attrs), Qiso_2022)) | |
5979 | { | |
5980 | int flags = XINT (AREF (attrs, coding_attr_iso_flags)); | |
5981 | ||
5982 | if (flags & CODING_ISO_FLAG_FULL_SUPPORT) | |
5983 | charset_list = Viso_2022_charset_list; | |
5984 | } | |
5985 | else if (EQ (CODING_ATTR_TYPE (attrs), Qemacs_mule)) | |
5986 | { | |
5987 | charset_list = Vemacs_mule_charset_list; | |
5988 | } | |
5989 | return charset_list; | |
5990 | } | |
5991 | ||
5992 | ||
e9f91ece KH |
5993 | /* Return a list of charsets supported by CODING-SYSTEM. */ |
5994 | ||
5995 | Lisp_Object | |
5996 | coding_system_charset_list (coding_system) | |
5997 | Lisp_Object coding_system; | |
5998 | { | |
5999 | int id; | |
6000 | Lisp_Object attrs, charset_list; | |
6001 | ||
6002 | CHECK_CODING_SYSTEM_GET_ID (coding_system, id); | |
6003 | attrs = CODING_ID_ATTRS (id); | |
6004 | ||
6005 | if (EQ (CODING_ATTR_TYPE (attrs), Qiso_2022)) | |
6006 | { | |
6007 | int flags = XINT (AREF (attrs, coding_attr_iso_flags)); | |
6008 | ||
6009 | if (flags & CODING_ISO_FLAG_FULL_SUPPORT) | |
6010 | charset_list = Viso_2022_charset_list; | |
6011 | else | |
6012 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
6013 | } | |
6014 | else if (EQ (CODING_ATTR_TYPE (attrs), Qemacs_mule)) | |
6015 | { | |
6016 | charset_list = Vemacs_mule_charset_list; | |
6017 | } | |
6018 | else | |
6019 | { | |
6020 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
6021 | } | |
6022 | return charset_list; | |
6023 | } | |
6024 | ||
6025 | ||
df7492f9 KH |
6026 | /* Return raw-text or one of its subsidiaries that has the same |
6027 | eol_type as CODING-SYSTEM. */ | |
ec6d2bb8 | 6028 | |
df7492f9 KH |
6029 | Lisp_Object |
6030 | raw_text_coding_system (coding_system) | |
6031 | Lisp_Object coding_system; | |
ec6d2bb8 | 6032 | { |
0be8721c | 6033 | Lisp_Object spec, attrs; |
df7492f9 | 6034 | Lisp_Object eol_type, raw_text_eol_type; |
ec6d2bb8 | 6035 | |
d3e4cb56 KH |
6036 | if (NILP (coding_system)) |
6037 | return Qraw_text; | |
df7492f9 KH |
6038 | spec = CODING_SYSTEM_SPEC (coding_system); |
6039 | attrs = AREF (spec, 0); | |
ec6d2bb8 | 6040 | |
df7492f9 KH |
6041 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) |
6042 | return coding_system; | |
ec6d2bb8 | 6043 | |
df7492f9 KH |
6044 | eol_type = AREF (spec, 2); |
6045 | if (VECTORP (eol_type)) | |
6046 | return Qraw_text; | |
6047 | spec = CODING_SYSTEM_SPEC (Qraw_text); | |
6048 | raw_text_eol_type = AREF (spec, 2); | |
6049 | return (EQ (eol_type, Qunix) ? AREF (raw_text_eol_type, 0) | |
6050 | : EQ (eol_type, Qdos) ? AREF (raw_text_eol_type, 1) | |
6051 | : AREF (raw_text_eol_type, 2)); | |
ec6d2bb8 KH |
6052 | } |
6053 | ||
54f78171 | 6054 | |
df7492f9 KH |
6055 | /* If CODING_SYSTEM doesn't specify end-of-line format but PARENT |
6056 | does, return one of the subsidiary that has the same eol-spec as | |
fcbcfb64 KH |
6057 | PARENT. Otherwise, return CODING_SYSTEM. If PARENT is nil, |
6058 | inherit end-of-line format from the system's setting | |
6059 | (system_eol_type). */ | |
df7492f9 KH |
6060 | |
6061 | Lisp_Object | |
6062 | coding_inherit_eol_type (coding_system, parent) | |
b74e4686 | 6063 | Lisp_Object coding_system, parent; |
54f78171 | 6064 | { |
3e139625 | 6065 | Lisp_Object spec, eol_type; |
54f78171 | 6066 | |
d3e4cb56 KH |
6067 | if (NILP (coding_system)) |
6068 | coding_system = Qraw_text; | |
df7492f9 | 6069 | spec = CODING_SYSTEM_SPEC (coding_system); |
df7492f9 | 6070 | eol_type = AREF (spec, 2); |
fcbcfb64 | 6071 | if (VECTORP (eol_type)) |
df7492f9 | 6072 | { |
df7492f9 KH |
6073 | Lisp_Object parent_eol_type; |
6074 | ||
fcbcfb64 KH |
6075 | if (! NILP (parent)) |
6076 | { | |
6077 | Lisp_Object parent_spec; | |
6078 | ||
4a015c45 | 6079 | parent_spec = CODING_SYSTEM_SPEC (parent); |
fcbcfb64 KH |
6080 | parent_eol_type = AREF (parent_spec, 2); |
6081 | } | |
6082 | else | |
6083 | parent_eol_type = system_eol_type; | |
df7492f9 KH |
6084 | if (EQ (parent_eol_type, Qunix)) |
6085 | coding_system = AREF (eol_type, 0); | |
6086 | else if (EQ (parent_eol_type, Qdos)) | |
6087 | coding_system = AREF (eol_type, 1); | |
6088 | else if (EQ (parent_eol_type, Qmac)) | |
6089 | coding_system = AREF (eol_type, 2); | |
54f78171 | 6090 | } |
df7492f9 | 6091 | return coding_system; |
54f78171 KH |
6092 | } |
6093 | ||
4ed46869 KH |
6094 | /* Emacs has a mechanism to automatically detect a coding system if it |
6095 | is one of Emacs' internal format, ISO2022, SJIS, and BIG5. But, | |
6096 | it's impossible to distinguish some coding systems accurately | |
6097 | because they use the same range of codes. So, at first, coding | |
6098 | systems are categorized into 7, those are: | |
6099 | ||
0ef69138 | 6100 | o coding-category-emacs-mule |
4ed46869 KH |
6101 | |
6102 | The category for a coding system which has the same code range | |
6103 | as Emacs' internal format. Assigned the coding-system (Lisp | |
0ef69138 | 6104 | symbol) `emacs-mule' by default. |
4ed46869 KH |
6105 | |
6106 | o coding-category-sjis | |
6107 | ||
6108 | The category for a coding system which has the same code range | |
6109 | as SJIS. Assigned the coding-system (Lisp | |
7717c392 | 6110 | symbol) `japanese-shift-jis' by default. |
4ed46869 KH |
6111 | |
6112 | o coding-category-iso-7 | |
6113 | ||
6114 | The category for a coding system which has the same code range | |
7717c392 | 6115 | as ISO2022 of 7-bit environment. This doesn't use any locking |
d46c5b12 KH |
6116 | shift and single shift functions. This can encode/decode all |
6117 | charsets. Assigned the coding-system (Lisp symbol) | |
6118 | `iso-2022-7bit' by default. | |
6119 | ||
6120 | o coding-category-iso-7-tight | |
6121 | ||
6122 | Same as coding-category-iso-7 except that this can | |
6123 | encode/decode only the specified charsets. | |
4ed46869 KH |
6124 | |
6125 | o coding-category-iso-8-1 | |
6126 | ||
6127 | The category for a coding system which has the same code range | |
6128 | as ISO2022 of 8-bit environment and graphic plane 1 used only | |
7717c392 KH |
6129 | for DIMENSION1 charset. This doesn't use any locking shift |
6130 | and single shift functions. Assigned the coding-system (Lisp | |
6131 | symbol) `iso-latin-1' by default. | |
4ed46869 KH |
6132 | |
6133 | o coding-category-iso-8-2 | |
6134 | ||
6135 | The category for a coding system which has the same code range | |
6136 | as ISO2022 of 8-bit environment and graphic plane 1 used only | |
7717c392 KH |
6137 | for DIMENSION2 charset. This doesn't use any locking shift |
6138 | and single shift functions. Assigned the coding-system (Lisp | |
6139 | symbol) `japanese-iso-8bit' by default. | |
4ed46869 | 6140 | |
7717c392 | 6141 | o coding-category-iso-7-else |
4ed46869 KH |
6142 | |
6143 | The category for a coding system which has the same code range | |
df7492f9 | 6144 | as ISO2022 of 7-bit environemnt but uses locking shift or |
7717c392 KH |
6145 | single shift functions. Assigned the coding-system (Lisp |
6146 | symbol) `iso-2022-7bit-lock' by default. | |
6147 | ||
6148 | o coding-category-iso-8-else | |
6149 | ||
6150 | The category for a coding system which has the same code range | |
df7492f9 | 6151 | as ISO2022 of 8-bit environemnt but uses locking shift or |
7717c392 KH |
6152 | single shift functions. Assigned the coding-system (Lisp |
6153 | symbol) `iso-2022-8bit-ss2' by default. | |
4ed46869 KH |
6154 | |
6155 | o coding-category-big5 | |
6156 | ||
6157 | The category for a coding system which has the same code range | |
6158 | as BIG5. Assigned the coding-system (Lisp symbol) | |
e0e989f6 | 6159 | `cn-big5' by default. |
4ed46869 | 6160 | |
fa42c37f KH |
6161 | o coding-category-utf-8 |
6162 | ||
6163 | The category for a coding system which has the same code range | |
6e76ae91 | 6164 | as UTF-8 (cf. RFC3629). Assigned the coding-system (Lisp |
fa42c37f KH |
6165 | symbol) `utf-8' by default. |
6166 | ||
6167 | o coding-category-utf-16-be | |
6168 | ||
6169 | The category for a coding system in which a text has an | |
6170 | Unicode signature (cf. Unicode Standard) in the order of BIG | |
6171 | endian at the head. Assigned the coding-system (Lisp symbol) | |
6172 | `utf-16-be' by default. | |
6173 | ||
6174 | o coding-category-utf-16-le | |
6175 | ||
6176 | The category for a coding system in which a text has an | |
6177 | Unicode signature (cf. Unicode Standard) in the order of | |
6178 | LITTLE endian at the head. Assigned the coding-system (Lisp | |
6179 | symbol) `utf-16-le' by default. | |
6180 | ||
1397dc18 KH |
6181 | o coding-category-ccl |
6182 | ||
6183 | The category for a coding system of which encoder/decoder is | |
6184 | written in CCL programs. The default value is nil, i.e., no | |
6185 | coding system is assigned. | |
6186 | ||
4ed46869 KH |
6187 | o coding-category-binary |
6188 | ||
6189 | The category for a coding system not categorized in any of the | |
6190 | above. Assigned the coding-system (Lisp symbol) | |
e0e989f6 | 6191 | `no-conversion' by default. |
4ed46869 KH |
6192 | |
6193 | Each of them is a Lisp symbol and the value is an actual | |
df7492f9 | 6194 | `coding-system's (this is also a Lisp symbol) assigned by a user. |
4ed46869 KH |
6195 | What Emacs does actually is to detect a category of coding system. |
6196 | Then, it uses a `coding-system' assigned to it. If Emacs can't | |
df7492f9 | 6197 | decide only one possible category, it selects a category of the |
4ed46869 KH |
6198 | highest priority. Priorities of categories are also specified by a |
6199 | user in a Lisp variable `coding-category-list'. | |
6200 | ||
6201 | */ | |
6202 | ||
df7492f9 KH |
6203 | #define EOL_SEEN_NONE 0 |
6204 | #define EOL_SEEN_LF 1 | |
6205 | #define EOL_SEEN_CR 2 | |
6206 | #define EOL_SEEN_CRLF 4 | |
66cfb530 | 6207 | |
ff0dacd7 KH |
6208 | /* Detect how end-of-line of a text of length SRC_BYTES pointed by |
6209 | SOURCE is encoded. If CATEGORY is one of | |
6210 | coding_category_utf_16_XXXX, assume that CR and LF are encoded by | |
6211 | two-byte, else they are encoded by one-byte. | |
6212 | ||
6213 | Return one of EOL_SEEN_XXX. */ | |
4ed46869 | 6214 | |
bc4bc72a | 6215 | #define MAX_EOL_CHECK_COUNT 3 |
d46c5b12 KH |
6216 | |
6217 | static int | |
89528eb3 | 6218 | detect_eol (source, src_bytes, category) |
f6cbaf43 | 6219 | const unsigned char *source; |
df7492f9 | 6220 | EMACS_INT src_bytes; |
89528eb3 | 6221 | enum coding_category category; |
4ed46869 | 6222 | { |
f6cbaf43 | 6223 | const unsigned char *src = source, *src_end = src + src_bytes; |
4ed46869 | 6224 | unsigned char c; |
df7492f9 KH |
6225 | int total = 0; |
6226 | int eol_seen = EOL_SEEN_NONE; | |
4ed46869 | 6227 | |
89528eb3 | 6228 | if ((1 << category) & CATEGORY_MASK_UTF_16) |
4ed46869 | 6229 | { |
df7492f9 | 6230 | int msb, lsb; |
fa42c37f | 6231 | |
89528eb3 KH |
6232 | msb = category == (coding_category_utf_16_le |
6233 | | coding_category_utf_16_le_nosig); | |
df7492f9 | 6234 | lsb = 1 - msb; |
fa42c37f | 6235 | |
df7492f9 | 6236 | while (src + 1 < src_end) |
fa42c37f | 6237 | { |
df7492f9 KH |
6238 | c = src[lsb]; |
6239 | if (src[msb] == 0 && (c == '\n' || c == '\r')) | |
fa42c37f | 6240 | { |
df7492f9 KH |
6241 | int this_eol; |
6242 | ||
6243 | if (c == '\n') | |
6244 | this_eol = EOL_SEEN_LF; | |
6245 | else if (src + 3 >= src_end | |
6246 | || src[msb + 2] != 0 | |
6247 | || src[lsb + 2] != '\n') | |
6248 | this_eol = EOL_SEEN_CR; | |
fa42c37f | 6249 | else |
75f4f1ac EZ |
6250 | { |
6251 | this_eol = EOL_SEEN_CRLF; | |
6252 | src += 2; | |
6253 | } | |
df7492f9 KH |
6254 | |
6255 | if (eol_seen == EOL_SEEN_NONE) | |
6256 | /* This is the first end-of-line. */ | |
6257 | eol_seen = this_eol; | |
6258 | else if (eol_seen != this_eol) | |
fa42c37f | 6259 | { |
75f4f1ac EZ |
6260 | /* The found type is different from what found before. |
6261 | Allow for stray ^M characters in DOS EOL files. */ | |
6262 | if (eol_seen == EOL_SEEN_CR && this_eol == EOL_SEEN_CRLF | |
6263 | || eol_seen == EOL_SEEN_CRLF && this_eol == EOL_SEEN_CR) | |
6264 | eol_seen = EOL_SEEN_CRLF; | |
6265 | else | |
6266 | { | |
6267 | eol_seen = EOL_SEEN_LF; | |
6268 | break; | |
6269 | } | |
fa42c37f | 6270 | } |
df7492f9 KH |
6271 | if (++total == MAX_EOL_CHECK_COUNT) |
6272 | break; | |
fa42c37f | 6273 | } |
df7492f9 | 6274 | src += 2; |
fa42c37f | 6275 | } |
bcf26d6a | 6276 | } |
d46c5b12 | 6277 | else |
c4825358 | 6278 | { |
df7492f9 | 6279 | while (src < src_end) |
27901516 | 6280 | { |
df7492f9 KH |
6281 | c = *src++; |
6282 | if (c == '\n' || c == '\r') | |
6283 | { | |
6284 | int this_eol; | |
d46c5b12 | 6285 | |
df7492f9 KH |
6286 | if (c == '\n') |
6287 | this_eol = EOL_SEEN_LF; | |
6288 | else if (src >= src_end || *src != '\n') | |
6289 | this_eol = EOL_SEEN_CR; | |
6290 | else | |
6291 | this_eol = EOL_SEEN_CRLF, src++; | |
d46c5b12 | 6292 | |
df7492f9 KH |
6293 | if (eol_seen == EOL_SEEN_NONE) |
6294 | /* This is the first end-of-line. */ | |
6295 | eol_seen = this_eol; | |
6296 | else if (eol_seen != this_eol) | |
6297 | { | |
75f4f1ac EZ |
6298 | /* The found type is different from what found before. |
6299 | Allow for stray ^M characters in DOS EOL files. */ | |
6300 | if (eol_seen == EOL_SEEN_CR && this_eol == EOL_SEEN_CRLF | |
6301 | || eol_seen == EOL_SEEN_CRLF && this_eol == EOL_SEEN_CR) | |
6302 | eol_seen = EOL_SEEN_CRLF; | |
6303 | else | |
6304 | { | |
6305 | eol_seen = EOL_SEEN_LF; | |
6306 | break; | |
6307 | } | |
df7492f9 KH |
6308 | } |
6309 | if (++total == MAX_EOL_CHECK_COUNT) | |
6310 | break; | |
6311 | } | |
6312 | } | |
73be902c | 6313 | } |
df7492f9 | 6314 | return eol_seen; |
73be902c KH |
6315 | } |
6316 | ||
df7492f9 | 6317 | |
24a73b0a | 6318 | static Lisp_Object |
df7492f9 KH |
6319 | adjust_coding_eol_type (coding, eol_seen) |
6320 | struct coding_system *coding; | |
6321 | int eol_seen; | |
73be902c | 6322 | { |
0be8721c | 6323 | Lisp_Object eol_type; |
8f924df7 | 6324 | |
df7492f9 KH |
6325 | eol_type = CODING_ID_EOL_TYPE (coding->id); |
6326 | if (eol_seen & EOL_SEEN_LF) | |
24a73b0a KH |
6327 | { |
6328 | coding->id = CODING_SYSTEM_ID (AREF (eol_type, 0)); | |
6329 | eol_type = Qunix; | |
6330 | } | |
6f197c07 | 6331 | else if (eol_seen & EOL_SEEN_CRLF) |
24a73b0a KH |
6332 | { |
6333 | coding->id = CODING_SYSTEM_ID (AREF (eol_type, 1)); | |
6334 | eol_type = Qdos; | |
6335 | } | |
6f197c07 | 6336 | else if (eol_seen & EOL_SEEN_CR) |
24a73b0a KH |
6337 | { |
6338 | coding->id = CODING_SYSTEM_ID (AREF (eol_type, 2)); | |
6339 | eol_type = Qmac; | |
6340 | } | |
6341 | return eol_type; | |
d46c5b12 | 6342 | } |
4ed46869 | 6343 | |
df7492f9 KH |
6344 | /* Detect how a text specified in CODING is encoded. If a coding |
6345 | system is detected, update fields of CODING by the detected coding | |
6346 | system. */ | |
0a28aafb | 6347 | |
df7492f9 KH |
6348 | void |
6349 | detect_coding (coding) | |
d46c5b12 | 6350 | struct coding_system *coding; |
d46c5b12 | 6351 | { |
8f924df7 | 6352 | const unsigned char *src, *src_end; |
73cce38d | 6353 | int saved_mode = coding->mode; |
d46c5b12 | 6354 | |
df7492f9 KH |
6355 | coding->consumed = coding->consumed_char = 0; |
6356 | coding->produced = coding->produced_char = 0; | |
6357 | coding_set_source (coding); | |
1c3478b0 | 6358 | |
df7492f9 | 6359 | src_end = coding->source + coding->src_bytes; |
c0e16b14 | 6360 | coding->head_ascii = 0; |
1c3478b0 | 6361 | |
df7492f9 KH |
6362 | /* If we have not yet decided the text encoding type, detect it |
6363 | now. */ | |
6364 | if (EQ (CODING_ATTR_TYPE (CODING_ID_ATTRS (coding->id)), Qundecided)) | |
b73bfc1c | 6365 | { |
df7492f9 | 6366 | int c, i; |
6cb21a4f | 6367 | struct coding_detection_info detect_info; |
2f3cbb32 | 6368 | int null_byte_found = 0, eight_bit_found = 0; |
df7492f9 | 6369 | |
6cb21a4f | 6370 | detect_info.checked = detect_info.found = detect_info.rejected = 0; |
2f3cbb32 | 6371 | for (src = coding->source; src < src_end; src++) |
d46c5b12 | 6372 | { |
df7492f9 | 6373 | c = *src; |
6cb21a4f | 6374 | if (c & 0x80) |
6cb21a4f | 6375 | { |
2f3cbb32 | 6376 | eight_bit_found = 1; |
2f3cbb32 KH |
6377 | if (null_byte_found) |
6378 | break; | |
6379 | } | |
6380 | else if (c < 0x20) | |
6381 | { | |
6382 | if ((c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO) | |
6383 | && ! inhibit_iso_escape_detection | |
6384 | && ! detect_info.checked) | |
6cb21a4f | 6385 | { |
2f3cbb32 KH |
6386 | if (detect_coding_iso_2022 (coding, &detect_info)) |
6387 | { | |
6388 | /* We have scanned the whole data. */ | |
6389 | if (! (detect_info.rejected & CATEGORY_MASK_ISO_7_ELSE)) | |
c0e16b14 KH |
6390 | { |
6391 | /* We didn't find an 8-bit code. We may | |
6392 | have found a null-byte, but it's very | |
6393 | rare that a binary file confirm to | |
6394 | ISO-2022. */ | |
6395 | src = src_end; | |
6396 | coding->head_ascii = src - coding->source; | |
6397 | } | |
6398 | detect_info.rejected |= ~CATEGORY_MASK_ISO_ESCAPE; | |
2f3cbb32 KH |
6399 | break; |
6400 | } | |
6401 | } | |
97b1b294 | 6402 | else if (! c && !inhibit_null_byte_detection) |
2f3cbb32 KH |
6403 | { |
6404 | null_byte_found = 1; | |
6405 | if (eight_bit_found) | |
6406 | break; | |
6cb21a4f | 6407 | } |
c006c0c8 KH |
6408 | if (! eight_bit_found) |
6409 | coding->head_ascii++; | |
6cb21a4f | 6410 | } |
c006c0c8 | 6411 | else if (! eight_bit_found) |
c0e16b14 | 6412 | coding->head_ascii++; |
d46c5b12 | 6413 | } |
df7492f9 | 6414 | |
2f3cbb32 KH |
6415 | if (null_byte_found || eight_bit_found |
6416 | || coding->head_ascii < coding->src_bytes | |
6cb21a4f | 6417 | || detect_info.found) |
d46c5b12 | 6418 | { |
ff0dacd7 KH |
6419 | enum coding_category category; |
6420 | struct coding_system *this; | |
df7492f9 | 6421 | |
6cb21a4f KH |
6422 | if (coding->head_ascii == coding->src_bytes) |
6423 | /* As all bytes are 7-bit, we can ignore non-ISO-2022 codings. */ | |
6424 | for (i = 0; i < coding_category_raw_text; i++) | |
6425 | { | |
6426 | category = coding_priorities[i]; | |
6427 | this = coding_categories + category; | |
6428 | if (detect_info.found & (1 << category)) | |
24a73b0a | 6429 | break; |
6cb21a4f KH |
6430 | } |
6431 | else | |
2f3cbb32 KH |
6432 | { |
6433 | if (null_byte_found) | |
ff0dacd7 | 6434 | { |
2f3cbb32 KH |
6435 | detect_info.checked |= ~CATEGORY_MASK_UTF_16; |
6436 | detect_info.rejected |= ~CATEGORY_MASK_UTF_16; | |
ff0dacd7 | 6437 | } |
2f3cbb32 KH |
6438 | for (i = 0; i < coding_category_raw_text; i++) |
6439 | { | |
6440 | category = coding_priorities[i]; | |
6441 | this = coding_categories + category; | |
6442 | if (this->id < 0) | |
6443 | { | |
6444 | /* No coding system of this category is defined. */ | |
6445 | detect_info.rejected |= (1 << category); | |
6446 | } | |
6447 | else if (category >= coding_category_raw_text) | |
6448 | continue; | |
6449 | else if (detect_info.checked & (1 << category)) | |
6450 | { | |
6451 | if (detect_info.found & (1 << category)) | |
6452 | break; | |
6453 | } | |
6454 | else if ((*(this->detector)) (coding, &detect_info) | |
6455 | && detect_info.found & (1 << category)) | |
6456 | { | |
6457 | if (category == coding_category_utf_16_auto) | |
6458 | { | |
6459 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
6460 | category = coding_category_utf_16_le; | |
6461 | else | |
6462 | category = coding_category_utf_16_be; | |
6463 | } | |
6464 | break; | |
6465 | } | |
6466 | } | |
2f3cbb32 | 6467 | } |
c0e16b14 KH |
6468 | |
6469 | if (i < coding_category_raw_text) | |
6470 | setup_coding_system (CODING_ID_NAME (this->id), coding); | |
6471 | else if (null_byte_found) | |
6472 | setup_coding_system (Qno_conversion, coding); | |
6473 | else if ((detect_info.rejected & CATEGORY_MASK_ANY) | |
6474 | == CATEGORY_MASK_ANY) | |
6475 | setup_coding_system (Qraw_text, coding); | |
6476 | else if (detect_info.rejected) | |
6477 | for (i = 0; i < coding_category_raw_text; i++) | |
6478 | if (! (detect_info.rejected & (1 << coding_priorities[i]))) | |
6479 | { | |
6480 | this = coding_categories + coding_priorities[i]; | |
6481 | setup_coding_system (CODING_ID_NAME (this->id), coding); | |
6482 | break; | |
6483 | } | |
d46c5b12 | 6484 | } |
b73bfc1c | 6485 | } |
a470d443 KH |
6486 | else if (XINT (CODING_ATTR_CATEGORY (CODING_ID_ATTRS (coding->id))) |
6487 | == coding_category_utf_8_auto) | |
6488 | { | |
6489 | Lisp_Object coding_systems; | |
6490 | struct coding_detection_info detect_info; | |
6491 | ||
6492 | coding_systems | |
6493 | = AREF (CODING_ID_ATTRS (coding->id), coding_attr_utf_bom); | |
6494 | detect_info.found = detect_info.rejected = 0; | |
6495 | coding->head_ascii = 0; | |
6496 | if (CONSP (coding_systems) | |
6497 | && detect_coding_utf_8 (coding, &detect_info)) | |
6498 | { | |
6499 | if (detect_info.found & CATEGORY_MASK_UTF_8_SIG) | |
6500 | setup_coding_system (XCAR (coding_systems), coding); | |
6501 | else | |
6502 | setup_coding_system (XCDR (coding_systems), coding); | |
6503 | } | |
6504 | } | |
24a73b0a KH |
6505 | else if (XINT (CODING_ATTR_CATEGORY (CODING_ID_ATTRS (coding->id))) |
6506 | == coding_category_utf_16_auto) | |
b49a1807 KH |
6507 | { |
6508 | Lisp_Object coding_systems; | |
6509 | struct coding_detection_info detect_info; | |
6510 | ||
6511 | coding_systems | |
a470d443 | 6512 | = AREF (CODING_ID_ATTRS (coding->id), coding_attr_utf_bom); |
b49a1807 | 6513 | detect_info.found = detect_info.rejected = 0; |
a470d443 | 6514 | coding->head_ascii = 0; |
b49a1807 | 6515 | if (CONSP (coding_systems) |
24a73b0a | 6516 | && detect_coding_utf_16 (coding, &detect_info)) |
b49a1807 KH |
6517 | { |
6518 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
6519 | setup_coding_system (XCAR (coding_systems), coding); | |
24a73b0a | 6520 | else if (detect_info.found & CATEGORY_MASK_UTF_16_BE) |
b49a1807 KH |
6521 | setup_coding_system (XCDR (coding_systems), coding); |
6522 | } | |
6523 | } | |
73cce38d | 6524 | coding->mode = saved_mode; |
4ed46869 | 6525 | } |
4ed46869 | 6526 | |
d46c5b12 | 6527 | |
aaaf0b1e | 6528 | static void |
df7492f9 | 6529 | decode_eol (coding) |
aaaf0b1e | 6530 | struct coding_system *coding; |
aaaf0b1e | 6531 | { |
24a73b0a KH |
6532 | Lisp_Object eol_type; |
6533 | unsigned char *p, *pbeg, *pend; | |
3ed051d4 | 6534 | |
24a73b0a | 6535 | eol_type = CODING_ID_EOL_TYPE (coding->id); |
0a9564cb | 6536 | if (EQ (eol_type, Qunix) || inhibit_eol_conversion) |
24a73b0a KH |
6537 | return; |
6538 | ||
6539 | if (NILP (coding->dst_object)) | |
6540 | pbeg = coding->destination; | |
6541 | else | |
6542 | pbeg = BYTE_POS_ADDR (coding->dst_pos_byte); | |
6543 | pend = pbeg + coding->produced; | |
6544 | ||
6545 | if (VECTORP (eol_type)) | |
aaaf0b1e | 6546 | { |
df7492f9 | 6547 | int eol_seen = EOL_SEEN_NONE; |
4ed46869 | 6548 | |
24a73b0a | 6549 | for (p = pbeg; p < pend; p++) |
aaaf0b1e | 6550 | { |
df7492f9 KH |
6551 | if (*p == '\n') |
6552 | eol_seen |= EOL_SEEN_LF; | |
6553 | else if (*p == '\r') | |
aaaf0b1e | 6554 | { |
df7492f9 | 6555 | if (p + 1 < pend && *(p + 1) == '\n') |
aaaf0b1e | 6556 | { |
df7492f9 KH |
6557 | eol_seen |= EOL_SEEN_CRLF; |
6558 | p++; | |
aaaf0b1e | 6559 | } |
aaaf0b1e | 6560 | else |
df7492f9 | 6561 | eol_seen |= EOL_SEEN_CR; |
aaaf0b1e | 6562 | } |
aaaf0b1e | 6563 | } |
75f4f1ac EZ |
6564 | /* Handle DOS-style EOLs in a file with stray ^M characters. */ |
6565 | if ((eol_seen & EOL_SEEN_CRLF) != 0 | |
6566 | && (eol_seen & EOL_SEEN_CR) != 0 | |
6567 | && (eol_seen & EOL_SEEN_LF) == 0) | |
6568 | eol_seen = EOL_SEEN_CRLF; | |
6569 | else if (eol_seen != EOL_SEEN_NONE | |
24a73b0a KH |
6570 | && eol_seen != EOL_SEEN_LF |
6571 | && eol_seen != EOL_SEEN_CRLF | |
6572 | && eol_seen != EOL_SEEN_CR) | |
6573 | eol_seen = EOL_SEEN_LF; | |
df7492f9 | 6574 | if (eol_seen != EOL_SEEN_NONE) |
24a73b0a | 6575 | eol_type = adjust_coding_eol_type (coding, eol_seen); |
aaaf0b1e | 6576 | } |
d46c5b12 | 6577 | |
24a73b0a | 6578 | if (EQ (eol_type, Qmac)) |
27901516 | 6579 | { |
24a73b0a | 6580 | for (p = pbeg; p < pend; p++) |
df7492f9 KH |
6581 | if (*p == '\r') |
6582 | *p = '\n'; | |
4ed46869 | 6583 | } |
24a73b0a | 6584 | else if (EQ (eol_type, Qdos)) |
df7492f9 | 6585 | { |
24a73b0a | 6586 | int n = 0; |
b73bfc1c | 6587 | |
24a73b0a KH |
6588 | if (NILP (coding->dst_object)) |
6589 | { | |
4347441b KH |
6590 | /* Start deleting '\r' from the tail to minimize the memory |
6591 | movement. */ | |
24a73b0a KH |
6592 | for (p = pend - 2; p >= pbeg; p--) |
6593 | if (*p == '\r') | |
6594 | { | |
6595 | safe_bcopy ((char *) (p + 1), (char *) p, pend-- - p - 1); | |
6596 | n++; | |
6597 | } | |
6598 | } | |
6599 | else | |
6600 | { | |
4347441b KH |
6601 | int pos_byte = coding->dst_pos_byte; |
6602 | int pos = coding->dst_pos; | |
6603 | int pos_end = pos + coding->produced_char - 1; | |
6604 | ||
6605 | while (pos < pos_end) | |
6606 | { | |
6607 | p = BYTE_POS_ADDR (pos_byte); | |
6608 | if (*p == '\r' && p[1] == '\n') | |
6609 | { | |
6610 | del_range_2 (pos, pos_byte, pos + 1, pos_byte + 1, 0); | |
6611 | n++; | |
6612 | pos_end--; | |
6613 | } | |
6614 | pos++; | |
69b8522d KH |
6615 | if (coding->dst_multibyte) |
6616 | pos_byte += BYTES_BY_CHAR_HEAD (*p); | |
6617 | else | |
6618 | pos_byte++; | |
4347441b | 6619 | } |
24a73b0a KH |
6620 | } |
6621 | coding->produced -= n; | |
6622 | coding->produced_char -= n; | |
aaaf0b1e | 6623 | } |
4ed46869 KH |
6624 | } |
6625 | ||
7d64c6ad | 6626 | |
a6f87d34 KH |
6627 | /* Return a translation table (or list of them) from coding system |
6628 | attribute vector ATTRS for encoding (ENCODEP is nonzero) or | |
6629 | decoding (ENCODEP is zero). */ | |
7d64c6ad | 6630 | |
e6a54062 | 6631 | static Lisp_Object |
09ee6fdd KH |
6632 | get_translation_table (attrs, encodep, max_lookup) |
6633 | Lisp_Object attrs; | |
6634 | int encodep, *max_lookup; | |
7d64c6ad KH |
6635 | { |
6636 | Lisp_Object standard, translation_table; | |
09ee6fdd | 6637 | Lisp_Object val; |
7d64c6ad | 6638 | |
4bed5909 CY |
6639 | if (NILP (Venable_character_translation)) |
6640 | { | |
6641 | if (max_lookup) | |
6642 | *max_lookup = 0; | |
6643 | return Qnil; | |
6644 | } | |
7d64c6ad KH |
6645 | if (encodep) |
6646 | translation_table = CODING_ATTR_ENCODE_TBL (attrs), | |
6647 | standard = Vstandard_translation_table_for_encode; | |
6648 | else | |
6649 | translation_table = CODING_ATTR_DECODE_TBL (attrs), | |
6650 | standard = Vstandard_translation_table_for_decode; | |
7d64c6ad | 6651 | if (NILP (translation_table)) |
09ee6fdd KH |
6652 | translation_table = standard; |
6653 | else | |
a6f87d34 | 6654 | { |
09ee6fdd KH |
6655 | if (SYMBOLP (translation_table)) |
6656 | translation_table = Fget (translation_table, Qtranslation_table); | |
6657 | else if (CONSP (translation_table)) | |
6658 | { | |
6659 | translation_table = Fcopy_sequence (translation_table); | |
6660 | for (val = translation_table; CONSP (val); val = XCDR (val)) | |
6661 | if (SYMBOLP (XCAR (val))) | |
6662 | XSETCAR (val, Fget (XCAR (val), Qtranslation_table)); | |
6663 | } | |
6664 | if (CHAR_TABLE_P (standard)) | |
6665 | { | |
6666 | if (CONSP (translation_table)) | |
6667 | translation_table = nconc2 (translation_table, | |
6668 | Fcons (standard, Qnil)); | |
6669 | else | |
6670 | translation_table = Fcons (translation_table, | |
6671 | Fcons (standard, Qnil)); | |
6672 | } | |
a6f87d34 | 6673 | } |
2170c8f0 KH |
6674 | |
6675 | if (max_lookup) | |
09ee6fdd | 6676 | { |
2170c8f0 KH |
6677 | *max_lookup = 1; |
6678 | if (CHAR_TABLE_P (translation_table) | |
6679 | && CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (translation_table)) > 1) | |
6680 | { | |
6681 | val = XCHAR_TABLE (translation_table)->extras[1]; | |
6682 | if (NATNUMP (val) && *max_lookup < XFASTINT (val)) | |
6683 | *max_lookup = XFASTINT (val); | |
6684 | } | |
6685 | else if (CONSP (translation_table)) | |
6686 | { | |
6687 | Lisp_Object tail, val; | |
09ee6fdd | 6688 | |
2170c8f0 KH |
6689 | for (tail = translation_table; CONSP (tail); tail = XCDR (tail)) |
6690 | if (CHAR_TABLE_P (XCAR (tail)) | |
6691 | && CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (XCAR (tail))) > 1) | |
6692 | { | |
6693 | val = XCHAR_TABLE (XCAR (tail))->extras[1]; | |
6694 | if (NATNUMP (val) && *max_lookup < XFASTINT (val)) | |
6695 | *max_lookup = XFASTINT (val); | |
6696 | } | |
6697 | } | |
a6f87d34 | 6698 | } |
7d64c6ad KH |
6699 | return translation_table; |
6700 | } | |
6701 | ||
09ee6fdd KH |
6702 | #define LOOKUP_TRANSLATION_TABLE(table, c, trans) \ |
6703 | do { \ | |
6704 | trans = Qnil; \ | |
6705 | if (CHAR_TABLE_P (table)) \ | |
6706 | { \ | |
6707 | trans = CHAR_TABLE_REF (table, c); \ | |
6708 | if (CHARACTERP (trans)) \ | |
6709 | c = XFASTINT (trans), trans = Qnil; \ | |
6710 | } \ | |
6711 | else if (CONSP (table)) \ | |
6712 | { \ | |
6713 | Lisp_Object tail; \ | |
6714 | \ | |
6715 | for (tail = table; CONSP (tail); tail = XCDR (tail)) \ | |
6716 | if (CHAR_TABLE_P (XCAR (tail))) \ | |
6717 | { \ | |
6718 | trans = CHAR_TABLE_REF (XCAR (tail), c); \ | |
6719 | if (CHARACTERP (trans)) \ | |
6720 | c = XFASTINT (trans), trans = Qnil; \ | |
6721 | else if (! NILP (trans)) \ | |
6722 | break; \ | |
6723 | } \ | |
6724 | } \ | |
e6a54062 KH |
6725 | } while (0) |
6726 | ||
7d64c6ad | 6727 | |
e951386e KH |
6728 | /* Return a translation of character(s) at BUF according to TRANS. |
6729 | TRANS is TO-CHAR or ((FROM . TO) ...) where | |
6730 | FROM = [FROM-CHAR ...], TO is TO-CHAR or [TO-CHAR ...]. | |
6731 | The return value is TO-CHAR or ([FROM-CHAR ...] . TO) if a | |
6732 | translation is found, and Qnil if not found.. | |
6733 | If BUF is too short to lookup characters in FROM, return Qt. */ | |
6734 | ||
69a80ea3 | 6735 | static Lisp_Object |
e951386e KH |
6736 | get_translation (trans, buf, buf_end) |
6737 | Lisp_Object trans; | |
69a80ea3 | 6738 | int *buf, *buf_end; |
69a80ea3 | 6739 | { |
e951386e KH |
6740 | |
6741 | if (INTEGERP (trans)) | |
6742 | return trans; | |
6743 | for (; CONSP (trans); trans = XCDR (trans)) | |
69a80ea3 | 6744 | { |
e951386e KH |
6745 | Lisp_Object val = XCAR (trans); |
6746 | Lisp_Object from = XCAR (val); | |
6747 | int len = ASIZE (from); | |
6748 | int i; | |
69a80ea3 | 6749 | |
e951386e | 6750 | for (i = 0; i < len; i++) |
69a80ea3 | 6751 | { |
e951386e KH |
6752 | if (buf + i == buf_end) |
6753 | return Qt; | |
6754 | if (XINT (AREF (from, i)) != buf[i]) | |
6755 | break; | |
69a80ea3 | 6756 | } |
e951386e KH |
6757 | if (i == len) |
6758 | return val; | |
69a80ea3 | 6759 | } |
e951386e | 6760 | return Qnil; |
69a80ea3 KH |
6761 | } |
6762 | ||
6763 | ||
d46c5b12 | 6764 | static int |
69a80ea3 | 6765 | produce_chars (coding, translation_table, last_block) |
df7492f9 | 6766 | struct coding_system *coding; |
69a80ea3 KH |
6767 | Lisp_Object translation_table; |
6768 | int last_block; | |
4ed46869 | 6769 | { |
df7492f9 KH |
6770 | unsigned char *dst = coding->destination + coding->produced; |
6771 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
119852e7 KH |
6772 | EMACS_INT produced; |
6773 | EMACS_INT produced_chars = 0; | |
69a80ea3 | 6774 | int carryover = 0; |
4ed46869 | 6775 | |
df7492f9 | 6776 | if (! coding->chars_at_source) |
4ed46869 | 6777 | { |
119852e7 | 6778 | /* Source characters are in coding->charbuf. */ |
fba4576f AS |
6779 | int *buf = coding->charbuf; |
6780 | int *buf_end = buf + coding->charbuf_used; | |
4ed46869 | 6781 | |
db274c7a KH |
6782 | if (EQ (coding->src_object, coding->dst_object)) |
6783 | { | |
6784 | coding_set_source (coding); | |
6785 | dst_end = ((unsigned char *) coding->source) + coding->consumed; | |
6786 | } | |
4ed46869 | 6787 | |
df7492f9 | 6788 | while (buf < buf_end) |
4ed46869 | 6789 | { |
69a80ea3 | 6790 | int c = *buf, i; |
bc4bc72a | 6791 | |
df7492f9 KH |
6792 | if (c >= 0) |
6793 | { | |
69a80ea3 KH |
6794 | int from_nchars = 1, to_nchars = 1; |
6795 | Lisp_Object trans = Qnil; | |
6796 | ||
09ee6fdd | 6797 | LOOKUP_TRANSLATION_TABLE (translation_table, c, trans); |
e6a54062 | 6798 | if (! NILP (trans)) |
69a80ea3 | 6799 | { |
e951386e KH |
6800 | trans = get_translation (trans, buf, buf_end); |
6801 | if (INTEGERP (trans)) | |
6802 | c = XINT (trans); | |
6803 | else if (CONSP (trans)) | |
6804 | { | |
6805 | from_nchars = ASIZE (XCAR (trans)); | |
6806 | trans = XCDR (trans); | |
6807 | if (INTEGERP (trans)) | |
6808 | c = XINT (trans); | |
6809 | else | |
6810 | { | |
6811 | to_nchars = ASIZE (trans); | |
6812 | c = XINT (AREF (trans, 0)); | |
6813 | } | |
6814 | } | |
6815 | else if (EQ (trans, Qt) && ! last_block) | |
69a80ea3 | 6816 | break; |
69a80ea3 KH |
6817 | } |
6818 | ||
6819 | if (dst + MAX_MULTIBYTE_LENGTH * to_nchars > dst_end) | |
6820 | { | |
6821 | dst = alloc_destination (coding, | |
6822 | buf_end - buf | |
6823 | + MAX_MULTIBYTE_LENGTH * to_nchars, | |
6824 | dst); | |
db274c7a KH |
6825 | if (EQ (coding->src_object, coding->dst_object)) |
6826 | { | |
6827 | coding_set_source (coding); | |
e951386e KH |
6828 | dst_end = (((unsigned char *) coding->source) |
6829 | + coding->consumed); | |
db274c7a KH |
6830 | } |
6831 | else | |
6832 | dst_end = coding->destination + coding->dst_bytes; | |
69a80ea3 KH |
6833 | } |
6834 | ||
433f7f87 | 6835 | for (i = 0; i < to_nchars; i++) |
69a80ea3 | 6836 | { |
433f7f87 KH |
6837 | if (i > 0) |
6838 | c = XINT (AREF (trans, i)); | |
69a80ea3 KH |
6839 | if (coding->dst_multibyte |
6840 | || ! CHAR_BYTE8_P (c)) | |
db274c7a | 6841 | CHAR_STRING_ADVANCE_NO_UNIFY (c, dst); |
69a80ea3 KH |
6842 | else |
6843 | *dst++ = CHAR_TO_BYTE8 (c); | |
6844 | } | |
6845 | produced_chars += to_nchars; | |
e951386e | 6846 | buf += from_nchars; |
d46c5b12 | 6847 | } |
df7492f9 | 6848 | else |
69a80ea3 KH |
6849 | /* This is an annotation datum. (-C) is the length. */ |
6850 | buf += -c; | |
4ed46869 | 6851 | } |
69a80ea3 | 6852 | carryover = buf_end - buf; |
4ed46869 | 6853 | } |
fa42c37f | 6854 | else |
fa42c37f | 6855 | { |
119852e7 | 6856 | /* Source characters are at coding->source. */ |
8f924df7 | 6857 | const unsigned char *src = coding->source; |
119852e7 | 6858 | const unsigned char *src_end = src + coding->consumed; |
4ed46869 | 6859 | |
db274c7a KH |
6860 | if (EQ (coding->dst_object, coding->src_object)) |
6861 | dst_end = (unsigned char *) src; | |
df7492f9 | 6862 | if (coding->src_multibyte != coding->dst_multibyte) |
fa42c37f | 6863 | { |
df7492f9 | 6864 | if (coding->src_multibyte) |
fa42c37f | 6865 | { |
71c81426 | 6866 | int multibytep = 1; |
4533845d | 6867 | EMACS_INT consumed_chars = 0; |
d46c5b12 | 6868 | |
df7492f9 KH |
6869 | while (1) |
6870 | { | |
8f924df7 | 6871 | const unsigned char *src_base = src; |
df7492f9 | 6872 | int c; |
b73bfc1c | 6873 | |
df7492f9 | 6874 | ONE_MORE_BYTE (c); |
119852e7 | 6875 | if (dst == dst_end) |
df7492f9 | 6876 | { |
119852e7 KH |
6877 | if (EQ (coding->src_object, coding->dst_object)) |
6878 | dst_end = (unsigned char *) src; | |
6879 | if (dst == dst_end) | |
df7492f9 | 6880 | { |
119852e7 KH |
6881 | EMACS_INT offset = src - coding->source; |
6882 | ||
6883 | dst = alloc_destination (coding, src_end - src + 1, | |
6884 | dst); | |
6885 | dst_end = coding->destination + coding->dst_bytes; | |
6886 | coding_set_source (coding); | |
6887 | src = coding->source + offset; | |
6888 | src_end = coding->source + coding->src_bytes; | |
db274c7a KH |
6889 | if (EQ (coding->src_object, coding->dst_object)) |
6890 | dst_end = (unsigned char *) src; | |
df7492f9 | 6891 | } |
df7492f9 KH |
6892 | } |
6893 | *dst++ = c; | |
6894 | produced_chars++; | |
6895 | } | |
6896 | no_more_source: | |
6897 | ; | |
fa42c37f KH |
6898 | } |
6899 | else | |
df7492f9 KH |
6900 | while (src < src_end) |
6901 | { | |
71c81426 | 6902 | int multibytep = 1; |
df7492f9 | 6903 | int c = *src++; |
b73bfc1c | 6904 | |
df7492f9 KH |
6905 | if (dst >= dst_end - 1) |
6906 | { | |
2c78b7e1 | 6907 | if (EQ (coding->src_object, coding->dst_object)) |
8f924df7 | 6908 | dst_end = (unsigned char *) src; |
2c78b7e1 KH |
6909 | if (dst >= dst_end - 1) |
6910 | { | |
119852e7 | 6911 | EMACS_INT offset = src - coding->source; |
db274c7a | 6912 | EMACS_INT more_bytes; |
119852e7 | 6913 | |
db274c7a KH |
6914 | if (EQ (coding->src_object, coding->dst_object)) |
6915 | more_bytes = ((src_end - src) / 2) + 2; | |
6916 | else | |
6917 | more_bytes = src_end - src + 2; | |
6918 | dst = alloc_destination (coding, more_bytes, dst); | |
2c78b7e1 KH |
6919 | dst_end = coding->destination + coding->dst_bytes; |
6920 | coding_set_source (coding); | |
119852e7 | 6921 | src = coding->source + offset; |
2c78b7e1 | 6922 | src_end = coding->source + coding->src_bytes; |
db274c7a KH |
6923 | if (EQ (coding->src_object, coding->dst_object)) |
6924 | dst_end = (unsigned char *) src; | |
2c78b7e1 | 6925 | } |
df7492f9 KH |
6926 | } |
6927 | EMIT_ONE_BYTE (c); | |
6928 | } | |
d46c5b12 | 6929 | } |
df7492f9 KH |
6930 | else |
6931 | { | |
6932 | if (!EQ (coding->src_object, coding->dst_object)) | |
fa42c37f | 6933 | { |
119852e7 | 6934 | EMACS_INT require = coding->src_bytes - coding->dst_bytes; |
4ed46869 | 6935 | |
df7492f9 | 6936 | if (require > 0) |
fa42c37f | 6937 | { |
df7492f9 KH |
6938 | EMACS_INT offset = src - coding->source; |
6939 | ||
6940 | dst = alloc_destination (coding, require, dst); | |
6941 | coding_set_source (coding); | |
6942 | src = coding->source + offset; | |
6943 | src_end = coding->source + coding->src_bytes; | |
fa42c37f KH |
6944 | } |
6945 | } | |
119852e7 | 6946 | produced_chars = coding->consumed_char; |
df7492f9 | 6947 | while (src < src_end) |
14daee73 | 6948 | *dst++ = *src++; |
fa42c37f KH |
6949 | } |
6950 | } | |
6951 | ||
df7492f9 | 6952 | produced = dst - (coding->destination + coding->produced); |
284201e4 | 6953 | if (BUFFERP (coding->dst_object) && produced_chars > 0) |
df7492f9 KH |
6954 | insert_from_gap (produced_chars, produced); |
6955 | coding->produced += produced; | |
6956 | coding->produced_char += produced_chars; | |
69a80ea3 | 6957 | return carryover; |
fa42c37f KH |
6958 | } |
6959 | ||
ff0dacd7 KH |
6960 | /* Compose text in CODING->object according to the annotation data at |
6961 | CHARBUF. CHARBUF is an array: | |
e951386e | 6962 | [ -LENGTH ANNOTATION_MASK NCHARS NBYTES METHOD [ COMPONENTS... ] ] |
df7492f9 | 6963 | */ |
4ed46869 | 6964 | |
df7492f9 | 6965 | static INLINE void |
69a80ea3 | 6966 | produce_composition (coding, charbuf, pos) |
4ed46869 | 6967 | struct coding_system *coding; |
df7492f9 | 6968 | int *charbuf; |
69a80ea3 | 6969 | EMACS_INT pos; |
4ed46869 | 6970 | { |
df7492f9 | 6971 | int len; |
69a80ea3 | 6972 | EMACS_INT to; |
df7492f9 | 6973 | enum composition_method method; |
df7492f9 | 6974 | Lisp_Object components; |
fa42c37f | 6975 | |
e951386e | 6976 | len = -charbuf[0] - MAX_ANNOTATION_LENGTH; |
69a80ea3 | 6977 | to = pos + charbuf[2]; |
e951386e | 6978 | method = (enum composition_method) (charbuf[4]); |
d46c5b12 | 6979 | |
df7492f9 KH |
6980 | if (method == COMPOSITION_RELATIVE) |
6981 | components = Qnil; | |
e951386e | 6982 | else |
d46c5b12 | 6983 | { |
df7492f9 | 6984 | Lisp_Object args[MAX_COMPOSITION_COMPONENTS * 2 - 1]; |
e951386e | 6985 | int i, j; |
b73bfc1c | 6986 | |
e951386e KH |
6987 | if (method == COMPOSITION_WITH_RULE) |
6988 | len = charbuf[2] * 3 - 2; | |
6989 | charbuf += MAX_ANNOTATION_LENGTH; | |
6990 | /* charbuf = [ CHRA ... CHAR] or [ CHAR -2 RULE ... CHAR ] */ | |
6991 | for (i = j = 0; i < len && charbuf[i] != -1; i++, j++) | |
9ffd559c | 6992 | { |
e951386e KH |
6993 | if (charbuf[i] >= 0) |
6994 | args[j] = make_number (charbuf[i]); | |
6995 | else | |
6996 | { | |
6997 | i++; | |
6998 | args[j] = make_number (charbuf[i] % 0x100); | |
6999 | } | |
9ffd559c | 7000 | } |
e951386e | 7001 | components = (i == j ? Fstring (j, args) : Fvector (j, args)); |
d46c5b12 | 7002 | } |
69a80ea3 | 7003 | compose_text (pos, to, components, Qnil, coding->dst_object); |
d46c5b12 KH |
7004 | } |
7005 | ||
d46c5b12 | 7006 | |
ff0dacd7 KH |
7007 | /* Put `charset' property on text in CODING->object according to |
7008 | the annotation data at CHARBUF. CHARBUF is an array: | |
69a80ea3 | 7009 | [ -LENGTH ANNOTATION_MASK NCHARS CHARSET-ID ] |
ff0dacd7 | 7010 | */ |
d46c5b12 | 7011 | |
ff0dacd7 | 7012 | static INLINE void |
69a80ea3 | 7013 | produce_charset (coding, charbuf, pos) |
d46c5b12 | 7014 | struct coding_system *coding; |
ff0dacd7 | 7015 | int *charbuf; |
69a80ea3 | 7016 | EMACS_INT pos; |
d46c5b12 | 7017 | { |
69a80ea3 KH |
7018 | EMACS_INT from = pos - charbuf[2]; |
7019 | struct charset *charset = CHARSET_FROM_ID (charbuf[3]); | |
b73bfc1c | 7020 | |
69a80ea3 | 7021 | Fput_text_property (make_number (from), make_number (pos), |
ff0dacd7 KH |
7022 | Qcharset, CHARSET_NAME (charset), |
7023 | coding->dst_object); | |
d46c5b12 KH |
7024 | } |
7025 | ||
d46c5b12 | 7026 | |
df7492f9 KH |
7027 | #define CHARBUF_SIZE 0x4000 |
7028 | ||
7029 | #define ALLOC_CONVERSION_WORK_AREA(coding) \ | |
7030 | do { \ | |
8510724d | 7031 | int size = CHARBUF_SIZE; \ |
df7492f9 KH |
7032 | \ |
7033 | coding->charbuf = NULL; \ | |
7034 | while (size > 1024) \ | |
7035 | { \ | |
7036 | coding->charbuf = (int *) alloca (sizeof (int) * size); \ | |
7037 | if (coding->charbuf) \ | |
7038 | break; \ | |
7039 | size >>= 1; \ | |
7040 | } \ | |
7041 | if (! coding->charbuf) \ | |
7042 | { \ | |
065e3595 | 7043 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_MEM); \ |
df7492f9 KH |
7044 | return coding->result; \ |
7045 | } \ | |
7046 | coding->charbuf_size = size; \ | |
7047 | } while (0) | |
4ed46869 | 7048 | |
d46c5b12 KH |
7049 | |
7050 | static void | |
69a80ea3 | 7051 | produce_annotation (coding, pos) |
d46c5b12 | 7052 | struct coding_system *coding; |
69a80ea3 | 7053 | EMACS_INT pos; |
d46c5b12 | 7054 | { |
df7492f9 KH |
7055 | int *charbuf = coding->charbuf; |
7056 | int *charbuf_end = charbuf + coding->charbuf_used; | |
d46c5b12 | 7057 | |
ff0dacd7 KH |
7058 | if (NILP (coding->dst_object)) |
7059 | return; | |
d46c5b12 | 7060 | |
df7492f9 | 7061 | while (charbuf < charbuf_end) |
a84f1519 | 7062 | { |
df7492f9 | 7063 | if (*charbuf >= 0) |
e951386e | 7064 | pos++, charbuf++; |
d46c5b12 | 7065 | else |
d46c5b12 | 7066 | { |
df7492f9 | 7067 | int len = -*charbuf; |
e951386e KH |
7068 | |
7069 | if (len > 2) | |
7070 | switch (charbuf[1]) | |
7071 | { | |
7072 | case CODING_ANNOTATE_COMPOSITION_MASK: | |
7073 | produce_composition (coding, charbuf, pos); | |
7074 | break; | |
7075 | case CODING_ANNOTATE_CHARSET_MASK: | |
7076 | produce_charset (coding, charbuf, pos); | |
7077 | break; | |
7078 | } | |
df7492f9 | 7079 | charbuf += len; |
d46c5b12 | 7080 | } |
a84f1519 | 7081 | } |
d46c5b12 KH |
7082 | } |
7083 | ||
df7492f9 KH |
7084 | /* Decode the data at CODING->src_object into CODING->dst_object. |
7085 | CODING->src_object is a buffer, a string, or nil. | |
7086 | CODING->dst_object is a buffer. | |
d46c5b12 | 7087 | |
df7492f9 KH |
7088 | If CODING->src_object is a buffer, it must be the current buffer. |
7089 | In this case, if CODING->src_pos is positive, it is a position of | |
7090 | the source text in the buffer, otherwise, the source text is in the | |
7091 | gap area of the buffer, and CODING->src_pos specifies the offset of | |
7092 | the text from GPT (which must be the same as PT). If this is the | |
7093 | same buffer as CODING->dst_object, CODING->src_pos must be | |
7094 | negative. | |
d46c5b12 | 7095 | |
b6828792 | 7096 | If CODING->src_object is a string, CODING->src_pos is an index to |
df7492f9 | 7097 | that string. |
d46c5b12 | 7098 | |
df7492f9 KH |
7099 | If CODING->src_object is nil, CODING->source must already point to |
7100 | the non-relocatable memory area. In this case, CODING->src_pos is | |
7101 | an offset from CODING->source. | |
73be902c | 7102 | |
df7492f9 KH |
7103 | The decoded data is inserted at the current point of the buffer |
7104 | CODING->dst_object. | |
7105 | */ | |
d46c5b12 | 7106 | |
df7492f9 KH |
7107 | static int |
7108 | decode_coding (coding) | |
d46c5b12 | 7109 | struct coding_system *coding; |
d46c5b12 | 7110 | { |
df7492f9 | 7111 | Lisp_Object attrs; |
24a73b0a | 7112 | Lisp_Object undo_list; |
7d64c6ad | 7113 | Lisp_Object translation_table; |
69a80ea3 KH |
7114 | int carryover; |
7115 | int i; | |
d46c5b12 | 7116 | |
df7492f9 KH |
7117 | if (BUFFERP (coding->src_object) |
7118 | && coding->src_pos > 0 | |
7119 | && coding->src_pos < GPT | |
7120 | && coding->src_pos + coding->src_chars > GPT) | |
7121 | move_gap_both (coding->src_pos, coding->src_pos_byte); | |
d46c5b12 | 7122 | |
24a73b0a | 7123 | undo_list = Qt; |
df7492f9 | 7124 | if (BUFFERP (coding->dst_object)) |
1c3478b0 | 7125 | { |
df7492f9 KH |
7126 | if (current_buffer != XBUFFER (coding->dst_object)) |
7127 | set_buffer_internal (XBUFFER (coding->dst_object)); | |
7128 | if (GPT != PT) | |
7129 | move_gap_both (PT, PT_BYTE); | |
24a73b0a KH |
7130 | undo_list = current_buffer->undo_list; |
7131 | current_buffer->undo_list = Qt; | |
1c3478b0 KH |
7132 | } |
7133 | ||
df7492f9 KH |
7134 | coding->consumed = coding->consumed_char = 0; |
7135 | coding->produced = coding->produced_char = 0; | |
7136 | coding->chars_at_source = 0; | |
065e3595 | 7137 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 | 7138 | coding->errors = 0; |
1c3478b0 | 7139 | |
df7492f9 KH |
7140 | ALLOC_CONVERSION_WORK_AREA (coding); |
7141 | ||
7142 | attrs = CODING_ID_ATTRS (coding->id); | |
2170c8f0 | 7143 | translation_table = get_translation_table (attrs, 0, NULL); |
df7492f9 | 7144 | |
69a80ea3 | 7145 | carryover = 0; |
df7492f9 | 7146 | do |
b73bfc1c | 7147 | { |
69a80ea3 KH |
7148 | EMACS_INT pos = coding->dst_pos + coding->produced_char; |
7149 | ||
df7492f9 KH |
7150 | coding_set_source (coding); |
7151 | coding->annotated = 0; | |
69a80ea3 | 7152 | coding->charbuf_used = carryover; |
df7492f9 | 7153 | (*(coding->decoder)) (coding); |
df7492f9 | 7154 | coding_set_destination (coding); |
69a80ea3 | 7155 | carryover = produce_chars (coding, translation_table, 0); |
df7492f9 | 7156 | if (coding->annotated) |
69a80ea3 KH |
7157 | produce_annotation (coding, pos); |
7158 | for (i = 0; i < carryover; i++) | |
7159 | coding->charbuf[i] | |
7160 | = coding->charbuf[coding->charbuf_used - carryover + i]; | |
d46c5b12 | 7161 | } |
df7492f9 | 7162 | while (coding->consumed < coding->src_bytes |
54b367bb KH |
7163 | && (coding->result == CODING_RESULT_SUCCESS |
7164 | || coding->result == CODING_RESULT_INVALID_SRC)); | |
d46c5b12 | 7165 | |
69a80ea3 KH |
7166 | if (carryover > 0) |
7167 | { | |
7168 | coding_set_destination (coding); | |
7169 | coding->charbuf_used = carryover; | |
7170 | produce_chars (coding, translation_table, 1); | |
7171 | } | |
7172 | ||
df7492f9 KH |
7173 | coding->carryover_bytes = 0; |
7174 | if (coding->consumed < coding->src_bytes) | |
d46c5b12 | 7175 | { |
df7492f9 | 7176 | int nbytes = coding->src_bytes - coding->consumed; |
8f924df7 | 7177 | const unsigned char *src; |
df7492f9 KH |
7178 | |
7179 | coding_set_source (coding); | |
7180 | coding_set_destination (coding); | |
7181 | src = coding->source + coding->consumed; | |
7182 | ||
7183 | if (coding->mode & CODING_MODE_LAST_BLOCK) | |
1c3478b0 | 7184 | { |
df7492f9 KH |
7185 | /* Flush out unprocessed data as binary chars. We are sure |
7186 | that the number of data is less than the size of | |
7187 | coding->charbuf. */ | |
065e3595 | 7188 | coding->charbuf_used = 0; |
b2dab6c8 JR |
7189 | coding->chars_at_source = 0; |
7190 | ||
df7492f9 | 7191 | while (nbytes-- > 0) |
1c3478b0 | 7192 | { |
df7492f9 | 7193 | int c = *src++; |
98725083 | 7194 | |
1c91457d KH |
7195 | if (c & 0x80) |
7196 | c = BYTE8_TO_CHAR (c); | |
7197 | coding->charbuf[coding->charbuf_used++] = c; | |
1c3478b0 | 7198 | } |
f6cbaf43 | 7199 | produce_chars (coding, Qnil, 1); |
d46c5b12 | 7200 | } |
d46c5b12 | 7201 | else |
df7492f9 KH |
7202 | { |
7203 | /* Record unprocessed bytes in coding->carryover. We are | |
7204 | sure that the number of data is less than the size of | |
7205 | coding->carryover. */ | |
7206 | unsigned char *p = coding->carryover; | |
7207 | ||
f289d375 KH |
7208 | if (nbytes > sizeof coding->carryover) |
7209 | nbytes = sizeof coding->carryover; | |
df7492f9 KH |
7210 | coding->carryover_bytes = nbytes; |
7211 | while (nbytes-- > 0) | |
7212 | *p++ = *src++; | |
1c3478b0 | 7213 | } |
df7492f9 | 7214 | coding->consumed = coding->src_bytes; |
b73bfc1c | 7215 | } |
69f76525 | 7216 | |
0a9564cb EZ |
7217 | if (! EQ (CODING_ID_EOL_TYPE (coding->id), Qunix) |
7218 | && !inhibit_eol_conversion) | |
4347441b | 7219 | decode_eol (coding); |
24a73b0a KH |
7220 | if (BUFFERP (coding->dst_object)) |
7221 | { | |
7222 | current_buffer->undo_list = undo_list; | |
7223 | record_insert (coding->dst_pos, coding->produced_char); | |
7224 | } | |
73be902c | 7225 | return coding->result; |
4ed46869 KH |
7226 | } |
7227 | ||
aaaf0b1e | 7228 | |
e1c23804 | 7229 | /* Extract an annotation datum from a composition starting at POS and |
ff0dacd7 KH |
7230 | ending before LIMIT of CODING->src_object (buffer or string), store |
7231 | the data in BUF, set *STOP to a starting position of the next | |
7232 | composition (if any) or to LIMIT, and return the address of the | |
7233 | next element of BUF. | |
7234 | ||
7235 | If such an annotation is not found, set *STOP to a starting | |
7236 | position of a composition after POS (if any) or to LIMIT, and | |
7237 | return BUF. */ | |
7238 | ||
7239 | static INLINE int * | |
7240 | handle_composition_annotation (pos, limit, coding, buf, stop) | |
7241 | EMACS_INT pos, limit; | |
aaaf0b1e | 7242 | struct coding_system *coding; |
ff0dacd7 KH |
7243 | int *buf; |
7244 | EMACS_INT *stop; | |
aaaf0b1e | 7245 | { |
ff0dacd7 KH |
7246 | EMACS_INT start, end; |
7247 | Lisp_Object prop; | |
aaaf0b1e | 7248 | |
ff0dacd7 KH |
7249 | if (! find_composition (pos, limit, &start, &end, &prop, coding->src_object) |
7250 | || end > limit) | |
7251 | *stop = limit; | |
7252 | else if (start > pos) | |
7253 | *stop = start; | |
7254 | else | |
aaaf0b1e | 7255 | { |
ff0dacd7 | 7256 | if (start == pos) |
aaaf0b1e | 7257 | { |
ff0dacd7 KH |
7258 | /* We found a composition. Store the corresponding |
7259 | annotation data in BUF. */ | |
7260 | int *head = buf; | |
7261 | enum composition_method method = COMPOSITION_METHOD (prop); | |
7262 | int nchars = COMPOSITION_LENGTH (prop); | |
7263 | ||
e951386e | 7264 | ADD_COMPOSITION_DATA (buf, nchars, 0, method); |
ff0dacd7 | 7265 | if (method != COMPOSITION_RELATIVE) |
aaaf0b1e | 7266 | { |
ff0dacd7 KH |
7267 | Lisp_Object components; |
7268 | int len, i, i_byte; | |
7269 | ||
7270 | components = COMPOSITION_COMPONENTS (prop); | |
7271 | if (VECTORP (components)) | |
aaaf0b1e | 7272 | { |
ff0dacd7 KH |
7273 | len = XVECTOR (components)->size; |
7274 | for (i = 0; i < len; i++) | |
7275 | *buf++ = XINT (AREF (components, i)); | |
aaaf0b1e | 7276 | } |
ff0dacd7 | 7277 | else if (STRINGP (components)) |
aaaf0b1e | 7278 | { |
8f924df7 | 7279 | len = SCHARS (components); |
ff0dacd7 KH |
7280 | i = i_byte = 0; |
7281 | while (i < len) | |
7282 | { | |
7283 | FETCH_STRING_CHAR_ADVANCE (*buf, components, i, i_byte); | |
7284 | buf++; | |
7285 | } | |
7286 | } | |
7287 | else if (INTEGERP (components)) | |
7288 | { | |
7289 | len = 1; | |
7290 | *buf++ = XINT (components); | |
7291 | } | |
7292 | else if (CONSP (components)) | |
7293 | { | |
7294 | for (len = 0; CONSP (components); | |
7295 | len++, components = XCDR (components)) | |
7296 | *buf++ = XINT (XCAR (components)); | |
aaaf0b1e | 7297 | } |
aaaf0b1e | 7298 | else |
ff0dacd7 KH |
7299 | abort (); |
7300 | *head -= len; | |
aaaf0b1e | 7301 | } |
aaaf0b1e | 7302 | } |
ff0dacd7 KH |
7303 | |
7304 | if (find_composition (end, limit, &start, &end, &prop, | |
7305 | coding->src_object) | |
7306 | && end <= limit) | |
7307 | *stop = start; | |
7308 | else | |
7309 | *stop = limit; | |
aaaf0b1e | 7310 | } |
ff0dacd7 KH |
7311 | return buf; |
7312 | } | |
7313 | ||
7314 | ||
e1c23804 | 7315 | /* Extract an annotation datum from a text property `charset' at POS of |
ff0dacd7 KH |
7316 | CODING->src_object (buffer of string), store the data in BUF, set |
7317 | *STOP to the position where the value of `charset' property changes | |
7318 | (limiting by LIMIT), and return the address of the next element of | |
7319 | BUF. | |
7320 | ||
7321 | If the property value is nil, set *STOP to the position where the | |
7322 | property value is non-nil (limiting by LIMIT), and return BUF. */ | |
7323 | ||
7324 | static INLINE int * | |
7325 | handle_charset_annotation (pos, limit, coding, buf, stop) | |
7326 | EMACS_INT pos, limit; | |
7327 | struct coding_system *coding; | |
7328 | int *buf; | |
7329 | EMACS_INT *stop; | |
7330 | { | |
7331 | Lisp_Object val, next; | |
7332 | int id; | |
7333 | ||
7334 | val = Fget_text_property (make_number (pos), Qcharset, coding->src_object); | |
7335 | if (! NILP (val) && CHARSETP (val)) | |
7336 | id = XINT (CHARSET_SYMBOL_ID (val)); | |
7337 | else | |
7338 | id = -1; | |
69a80ea3 | 7339 | ADD_CHARSET_DATA (buf, 0, id); |
ff0dacd7 KH |
7340 | next = Fnext_single_property_change (make_number (pos), Qcharset, |
7341 | coding->src_object, | |
7342 | make_number (limit)); | |
7343 | *stop = XINT (next); | |
7344 | return buf; | |
7345 | } | |
7346 | ||
7347 | ||
df7492f9 | 7348 | static void |
09ee6fdd | 7349 | consume_chars (coding, translation_table, max_lookup) |
df7492f9 | 7350 | struct coding_system *coding; |
433f7f87 | 7351 | Lisp_Object translation_table; |
09ee6fdd | 7352 | int max_lookup; |
df7492f9 KH |
7353 | { |
7354 | int *buf = coding->charbuf; | |
ff0dacd7 | 7355 | int *buf_end = coding->charbuf + coding->charbuf_size; |
7c78e542 | 7356 | const unsigned char *src = coding->source + coding->consumed; |
4776e638 | 7357 | const unsigned char *src_end = coding->source + coding->src_bytes; |
ff0dacd7 KH |
7358 | EMACS_INT pos = coding->src_pos + coding->consumed_char; |
7359 | EMACS_INT end_pos = coding->src_pos + coding->src_chars; | |
df7492f9 KH |
7360 | int multibytep = coding->src_multibyte; |
7361 | Lisp_Object eol_type; | |
7362 | int c; | |
ff0dacd7 | 7363 | EMACS_INT stop, stop_composition, stop_charset; |
09ee6fdd | 7364 | int *lookup_buf = NULL; |
433f7f87 KH |
7365 | |
7366 | if (! NILP (translation_table)) | |
09ee6fdd | 7367 | lookup_buf = alloca (sizeof (int) * max_lookup); |
88993dfd | 7368 | |
0a9564cb | 7369 | eol_type = inhibit_eol_conversion ? Qunix : CODING_ID_EOL_TYPE (coding->id); |
df7492f9 KH |
7370 | if (VECTORP (eol_type)) |
7371 | eol_type = Qunix; | |
88993dfd | 7372 | |
df7492f9 KH |
7373 | /* Note: composition handling is not yet implemented. */ |
7374 | coding->common_flags &= ~CODING_ANNOTATE_COMPOSITION_MASK; | |
ec6d2bb8 | 7375 | |
0b5670c9 KH |
7376 | if (NILP (coding->src_object)) |
7377 | stop = stop_composition = stop_charset = end_pos; | |
ff0dacd7 | 7378 | else |
0b5670c9 KH |
7379 | { |
7380 | if (coding->common_flags & CODING_ANNOTATE_COMPOSITION_MASK) | |
7381 | stop = stop_composition = pos; | |
7382 | else | |
7383 | stop = stop_composition = end_pos; | |
7384 | if (coding->common_flags & CODING_ANNOTATE_CHARSET_MASK) | |
7385 | stop = stop_charset = pos; | |
7386 | else | |
7387 | stop_charset = end_pos; | |
7388 | } | |
ec6d2bb8 | 7389 | |
24a73b0a | 7390 | /* Compensate for CRLF and conversion. */ |
ff0dacd7 | 7391 | buf_end -= 1 + MAX_ANNOTATION_LENGTH; |
df7492f9 | 7392 | while (buf < buf_end) |
aaaf0b1e | 7393 | { |
433f7f87 KH |
7394 | Lisp_Object trans; |
7395 | ||
df7492f9 | 7396 | if (pos == stop) |
ec6d2bb8 | 7397 | { |
df7492f9 KH |
7398 | if (pos == end_pos) |
7399 | break; | |
ff0dacd7 KH |
7400 | if (pos == stop_composition) |
7401 | buf = handle_composition_annotation (pos, end_pos, coding, | |
7402 | buf, &stop_composition); | |
7403 | if (pos == stop_charset) | |
7404 | buf = handle_charset_annotation (pos, end_pos, coding, | |
7405 | buf, &stop_charset); | |
7406 | stop = (stop_composition < stop_charset | |
7407 | ? stop_composition : stop_charset); | |
df7492f9 KH |
7408 | } |
7409 | ||
7410 | if (! multibytep) | |
4776e638 | 7411 | { |
d3e4cb56 | 7412 | EMACS_INT bytes; |
aaaf0b1e | 7413 | |
ea29edf2 KH |
7414 | if (coding->encoder == encode_coding_raw_text) |
7415 | c = *src++, pos++; | |
7416 | else if ((bytes = MULTIBYTE_LENGTH (src, src_end)) > 0) | |
db274c7a | 7417 | c = STRING_CHAR_ADVANCE_NO_UNIFY (src), pos += bytes; |
4776e638 | 7418 | else |
f03caae0 | 7419 | c = BYTE8_TO_CHAR (*src), src++, pos++; |
4776e638 | 7420 | } |
df7492f9 | 7421 | else |
db274c7a | 7422 | c = STRING_CHAR_ADVANCE_NO_UNIFY (src), pos++; |
df7492f9 KH |
7423 | if ((c == '\r') && (coding->mode & CODING_MODE_SELECTIVE_DISPLAY)) |
7424 | c = '\n'; | |
7425 | if (! EQ (eol_type, Qunix)) | |
aaaf0b1e | 7426 | { |
df7492f9 | 7427 | if (c == '\n') |
aaaf0b1e | 7428 | { |
df7492f9 KH |
7429 | if (EQ (eol_type, Qdos)) |
7430 | *buf++ = '\r'; | |
7431 | else | |
7432 | c = '\r'; | |
aaaf0b1e KH |
7433 | } |
7434 | } | |
433f7f87 | 7435 | |
e6a54062 | 7436 | trans = Qnil; |
09ee6fdd | 7437 | LOOKUP_TRANSLATION_TABLE (translation_table, c, trans); |
e6a54062 | 7438 | if (NILP (trans)) |
433f7f87 KH |
7439 | *buf++ = c; |
7440 | else | |
7441 | { | |
7442 | int from_nchars = 1, to_nchars = 1; | |
7443 | int *lookup_buf_end; | |
7444 | const unsigned char *p = src; | |
7445 | int i; | |
7446 | ||
7447 | lookup_buf[0] = c; | |
7448 | for (i = 1; i < max_lookup && p < src_end; i++) | |
7449 | lookup_buf[i] = STRING_CHAR_ADVANCE (p); | |
7450 | lookup_buf_end = lookup_buf + i; | |
e951386e KH |
7451 | trans = get_translation (trans, lookup_buf, lookup_buf_end); |
7452 | if (INTEGERP (trans)) | |
7453 | c = XINT (trans); | |
7454 | else if (CONSP (trans)) | |
7455 | { | |
7456 | from_nchars = ASIZE (XCAR (trans)); | |
7457 | trans = XCDR (trans); | |
7458 | if (INTEGERP (trans)) | |
7459 | c = XINT (trans); | |
7460 | else | |
7461 | { | |
7462 | to_nchars = ASIZE (trans); | |
7463 | if (buf + to_nchars > buf_end) | |
7464 | break; | |
7465 | c = XINT (AREF (trans, 0)); | |
7466 | } | |
7467 | } | |
7468 | else | |
433f7f87 | 7469 | break; |
e951386e | 7470 | *buf++ = c; |
433f7f87 KH |
7471 | for (i = 1; i < to_nchars; i++) |
7472 | *buf++ = XINT (AREF (trans, i)); | |
7473 | for (i = 1; i < from_nchars; i++, pos++) | |
7474 | src += MULTIBYTE_LENGTH_NO_CHECK (src); | |
7475 | } | |
aaaf0b1e | 7476 | } |
ec6d2bb8 | 7477 | |
df7492f9 KH |
7478 | coding->consumed = src - coding->source; |
7479 | coding->consumed_char = pos - coding->src_pos; | |
7480 | coding->charbuf_used = buf - coding->charbuf; | |
7481 | coding->chars_at_source = 0; | |
aaaf0b1e KH |
7482 | } |
7483 | ||
4ed46869 | 7484 | |
df7492f9 KH |
7485 | /* Encode the text at CODING->src_object into CODING->dst_object. |
7486 | CODING->src_object is a buffer or a string. | |
7487 | CODING->dst_object is a buffer or nil. | |
7488 | ||
7489 | If CODING->src_object is a buffer, it must be the current buffer. | |
7490 | In this case, if CODING->src_pos is positive, it is a position of | |
7491 | the source text in the buffer, otherwise. the source text is in the | |
7492 | gap area of the buffer, and coding->src_pos specifies the offset of | |
7493 | the text from GPT (which must be the same as PT). If this is the | |
7494 | same buffer as CODING->dst_object, CODING->src_pos must be | |
7495 | negative and CODING should not have `pre-write-conversion'. | |
7496 | ||
7497 | If CODING->src_object is a string, CODING should not have | |
7498 | `pre-write-conversion'. | |
7499 | ||
7500 | If CODING->dst_object is a buffer, the encoded data is inserted at | |
7501 | the current point of that buffer. | |
7502 | ||
7503 | If CODING->dst_object is nil, the encoded data is placed at the | |
7504 | memory area specified by CODING->destination. */ | |
7505 | ||
7506 | static int | |
7507 | encode_coding (coding) | |
4ed46869 | 7508 | struct coding_system *coding; |
4ed46869 | 7509 | { |
df7492f9 | 7510 | Lisp_Object attrs; |
7d64c6ad | 7511 | Lisp_Object translation_table; |
09ee6fdd | 7512 | int max_lookup; |
9861e777 | 7513 | |
df7492f9 | 7514 | attrs = CODING_ID_ATTRS (coding->id); |
ea29edf2 KH |
7515 | if (coding->encoder == encode_coding_raw_text) |
7516 | translation_table = Qnil, max_lookup = 0; | |
7517 | else | |
7518 | translation_table = get_translation_table (attrs, 1, &max_lookup); | |
4ed46869 | 7519 | |
df7492f9 | 7520 | if (BUFFERP (coding->dst_object)) |
8844fa83 | 7521 | { |
df7492f9 KH |
7522 | set_buffer_internal (XBUFFER (coding->dst_object)); |
7523 | coding->dst_multibyte | |
7524 | = ! NILP (current_buffer->enable_multibyte_characters); | |
8844fa83 | 7525 | } |
4ed46869 | 7526 | |
b73bfc1c | 7527 | coding->consumed = coding->consumed_char = 0; |
df7492f9 | 7528 | coding->produced = coding->produced_char = 0; |
065e3595 | 7529 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
b73bfc1c | 7530 | coding->errors = 0; |
b73bfc1c | 7531 | |
df7492f9 | 7532 | ALLOC_CONVERSION_WORK_AREA (coding); |
4ed46869 | 7533 | |
df7492f9 KH |
7534 | do { |
7535 | coding_set_source (coding); | |
09ee6fdd | 7536 | consume_chars (coding, translation_table, max_lookup); |
df7492f9 KH |
7537 | coding_set_destination (coding); |
7538 | (*(coding->encoder)) (coding); | |
7539 | } while (coding->consumed_char < coding->src_chars); | |
7540 | ||
284201e4 | 7541 | if (BUFFERP (coding->dst_object) && coding->produced_char > 0) |
df7492f9 KH |
7542 | insert_from_gap (coding->produced_char, coding->produced); |
7543 | ||
7544 | return (coding->result); | |
ec6d2bb8 KH |
7545 | } |
7546 | ||
fb88bf2d | 7547 | |
24a73b0a KH |
7548 | /* Name (or base name) of work buffer for code conversion. */ |
7549 | static Lisp_Object Vcode_conversion_workbuf_name; | |
d46c5b12 | 7550 | |
24a73b0a KH |
7551 | /* A working buffer used by the top level conversion. Once it is |
7552 | created, it is never destroyed. It has the name | |
7553 | Vcode_conversion_workbuf_name. The other working buffers are | |
7554 | destroyed after the use is finished, and their names are modified | |
7555 | versions of Vcode_conversion_workbuf_name. */ | |
7556 | static Lisp_Object Vcode_conversion_reused_workbuf; | |
b73bfc1c | 7557 | |
24a73b0a KH |
7558 | /* 1 iff Vcode_conversion_reused_workbuf is already in use. */ |
7559 | static int reused_workbuf_in_use; | |
4ed46869 | 7560 | |
24a73b0a KH |
7561 | |
7562 | /* Return a working buffer of code convesion. MULTIBYTE specifies the | |
7563 | multibyteness of returning buffer. */ | |
b73bfc1c | 7564 | |
f6cbaf43 | 7565 | static Lisp_Object |
24a73b0a | 7566 | make_conversion_work_buffer (multibyte) |
f6cbaf43 | 7567 | int multibyte; |
df7492f9 | 7568 | { |
24a73b0a KH |
7569 | Lisp_Object name, workbuf; |
7570 | struct buffer *current; | |
4ed46869 | 7571 | |
24a73b0a | 7572 | if (reused_workbuf_in_use++) |
065e3595 KH |
7573 | { |
7574 | name = Fgenerate_new_buffer_name (Vcode_conversion_workbuf_name, Qnil); | |
7575 | workbuf = Fget_buffer_create (name); | |
7576 | } | |
df7492f9 | 7577 | else |
065e3595 | 7578 | { |
159bd5a2 | 7579 | if (NILP (Fbuffer_live_p (Vcode_conversion_reused_workbuf))) |
a993c7a1 KH |
7580 | Vcode_conversion_reused_workbuf |
7581 | = Fget_buffer_create (Vcode_conversion_workbuf_name); | |
7582 | workbuf = Vcode_conversion_reused_workbuf; | |
065e3595 | 7583 | } |
24a73b0a KH |
7584 | current = current_buffer; |
7585 | set_buffer_internal (XBUFFER (workbuf)); | |
df36ff1f CY |
7586 | /* We can't allow modification hooks to run in the work buffer. For |
7587 | instance, directory_files_internal assumes that file decoding | |
7588 | doesn't compile new regexps. */ | |
7589 | Fset (Fmake_local_variable (Qinhibit_modification_hooks), Qt); | |
3ed051d4 | 7590 | Ferase_buffer (); |
df7492f9 | 7591 | current_buffer->undo_list = Qt; |
24a73b0a | 7592 | current_buffer->enable_multibyte_characters = multibyte ? Qt : Qnil; |
df7492f9 | 7593 | set_buffer_internal (current); |
24a73b0a | 7594 | return workbuf; |
df7492f9 | 7595 | } |
d46c5b12 | 7596 | |
24a73b0a | 7597 | |
4776e638 | 7598 | static Lisp_Object |
24a73b0a KH |
7599 | code_conversion_restore (arg) |
7600 | Lisp_Object arg; | |
4776e638 | 7601 | { |
24a73b0a | 7602 | Lisp_Object current, workbuf; |
948bdcf3 | 7603 | struct gcpro gcpro1; |
24a73b0a | 7604 | |
948bdcf3 | 7605 | GCPRO1 (arg); |
24a73b0a KH |
7606 | current = XCAR (arg); |
7607 | workbuf = XCDR (arg); | |
7608 | if (! NILP (workbuf)) | |
7609 | { | |
7610 | if (EQ (workbuf, Vcode_conversion_reused_workbuf)) | |
7611 | reused_workbuf_in_use = 0; | |
7612 | else if (! NILP (Fbuffer_live_p (workbuf))) | |
7613 | Fkill_buffer (workbuf); | |
7614 | } | |
7615 | set_buffer_internal (XBUFFER (current)); | |
948bdcf3 | 7616 | UNGCPRO; |
4776e638 KH |
7617 | return Qnil; |
7618 | } | |
b73bfc1c | 7619 | |
24a73b0a KH |
7620 | Lisp_Object |
7621 | code_conversion_save (with_work_buf, multibyte) | |
4776e638 | 7622 | int with_work_buf, multibyte; |
df7492f9 | 7623 | { |
24a73b0a | 7624 | Lisp_Object workbuf = Qnil; |
b73bfc1c | 7625 | |
4776e638 | 7626 | if (with_work_buf) |
24a73b0a KH |
7627 | workbuf = make_conversion_work_buffer (multibyte); |
7628 | record_unwind_protect (code_conversion_restore, | |
7629 | Fcons (Fcurrent_buffer (), workbuf)); | |
4776e638 | 7630 | return workbuf; |
df7492f9 | 7631 | } |
d46c5b12 | 7632 | |
df7492f9 KH |
7633 | int |
7634 | decode_coding_gap (coding, chars, bytes) | |
7635 | struct coding_system *coding; | |
7636 | EMACS_INT chars, bytes; | |
7637 | { | |
7638 | int count = specpdl_ptr - specpdl; | |
5e5c78be | 7639 | Lisp_Object attrs; |
fb88bf2d | 7640 | |
24a73b0a | 7641 | code_conversion_save (0, 0); |
ec6d2bb8 | 7642 | |
24a73b0a | 7643 | coding->src_object = Fcurrent_buffer (); |
df7492f9 KH |
7644 | coding->src_chars = chars; |
7645 | coding->src_bytes = bytes; | |
7646 | coding->src_pos = -chars; | |
7647 | coding->src_pos_byte = -bytes; | |
7648 | coding->src_multibyte = chars < bytes; | |
24a73b0a | 7649 | coding->dst_object = coding->src_object; |
df7492f9 KH |
7650 | coding->dst_pos = PT; |
7651 | coding->dst_pos_byte = PT_BYTE; | |
71c81426 | 7652 | coding->dst_multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
4ed46869 | 7653 | |
df7492f9 KH |
7654 | if (CODING_REQUIRE_DETECTION (coding)) |
7655 | detect_coding (coding); | |
8f924df7 | 7656 | |
9286b333 | 7657 | coding->mode |= CODING_MODE_LAST_BLOCK; |
287c57d7 | 7658 | current_buffer->text->inhibit_shrinking = 1; |
df7492f9 | 7659 | decode_coding (coding); |
287c57d7 | 7660 | current_buffer->text->inhibit_shrinking = 0; |
d46c5b12 | 7661 | |
5e5c78be KH |
7662 | attrs = CODING_ID_ATTRS (coding->id); |
7663 | if (! NILP (CODING_ATTR_POST_READ (attrs))) | |
b73bfc1c | 7664 | { |
5e5c78be KH |
7665 | EMACS_INT prev_Z = Z, prev_Z_BYTE = Z_BYTE; |
7666 | Lisp_Object val; | |
7667 | ||
7668 | TEMP_SET_PT_BOTH (coding->dst_pos, coding->dst_pos_byte); | |
5e5c78be KH |
7669 | val = call1 (CODING_ATTR_POST_READ (attrs), |
7670 | make_number (coding->produced_char)); | |
5e5c78be KH |
7671 | CHECK_NATNUM (val); |
7672 | coding->produced_char += Z - prev_Z; | |
7673 | coding->produced += Z_BYTE - prev_Z_BYTE; | |
b73bfc1c | 7674 | } |
4ed46869 | 7675 | |
df7492f9 | 7676 | unbind_to (count, Qnil); |
b73bfc1c KH |
7677 | return coding->result; |
7678 | } | |
52d41803 | 7679 | |
4ed46869 | 7680 | int |
df7492f9 | 7681 | encode_coding_gap (coding, chars, bytes) |
4ed46869 | 7682 | struct coding_system *coding; |
df7492f9 | 7683 | EMACS_INT chars, bytes; |
4ed46869 | 7684 | { |
df7492f9 | 7685 | int count = specpdl_ptr - specpdl; |
4ed46869 | 7686 | |
24a73b0a | 7687 | code_conversion_save (0, 0); |
4ed46869 | 7688 | |
24a73b0a | 7689 | coding->src_object = Fcurrent_buffer (); |
df7492f9 KH |
7690 | coding->src_chars = chars; |
7691 | coding->src_bytes = bytes; | |
7692 | coding->src_pos = -chars; | |
7693 | coding->src_pos_byte = -bytes; | |
7694 | coding->src_multibyte = chars < bytes; | |
7695 | coding->dst_object = coding->src_object; | |
7696 | coding->dst_pos = PT; | |
7697 | coding->dst_pos_byte = PT_BYTE; | |
4ed46869 | 7698 | |
df7492f9 | 7699 | encode_coding (coding); |
b73bfc1c | 7700 | |
df7492f9 KH |
7701 | unbind_to (count, Qnil); |
7702 | return coding->result; | |
7703 | } | |
4ed46869 | 7704 | |
d46c5b12 | 7705 | |
df7492f9 KH |
7706 | /* Decode the text in the range FROM/FROM_BYTE and TO/TO_BYTE in |
7707 | SRC_OBJECT into DST_OBJECT by coding context CODING. | |
b73bfc1c | 7708 | |
df7492f9 | 7709 | SRC_OBJECT is a buffer, a string, or Qnil. |
b73bfc1c | 7710 | |
df7492f9 KH |
7711 | If it is a buffer, the text is at point of the buffer. FROM and TO |
7712 | are positions in the buffer. | |
b73bfc1c | 7713 | |
df7492f9 KH |
7714 | If it is a string, the text is at the beginning of the string. |
7715 | FROM and TO are indices to the string. | |
4ed46869 | 7716 | |
df7492f9 KH |
7717 | If it is nil, the text is at coding->source. FROM and TO are |
7718 | indices to coding->source. | |
bb10be8b | 7719 | |
df7492f9 | 7720 | DST_OBJECT is a buffer, Qt, or Qnil. |
4ed46869 | 7721 | |
df7492f9 KH |
7722 | If it is a buffer, the decoded text is inserted at point of the |
7723 | buffer. If the buffer is the same as SRC_OBJECT, the source text | |
7724 | is deleted. | |
4ed46869 | 7725 | |
df7492f9 KH |
7726 | If it is Qt, a string is made from the decoded text, and |
7727 | set in CODING->dst_object. | |
d46c5b12 | 7728 | |
df7492f9 | 7729 | If it is Qnil, the decoded text is stored at CODING->destination. |
2cb26057 | 7730 | The caller must allocate CODING->dst_bytes bytes at |
df7492f9 KH |
7731 | CODING->destination by xmalloc. If the decoded text is longer than |
7732 | CODING->dst_bytes, CODING->destination is relocated by xrealloc. | |
7733 | */ | |
d46c5b12 | 7734 | |
df7492f9 KH |
7735 | void |
7736 | decode_coding_object (coding, src_object, from, from_byte, to, to_byte, | |
7737 | dst_object) | |
d46c5b12 | 7738 | struct coding_system *coding; |
df7492f9 KH |
7739 | Lisp_Object src_object; |
7740 | EMACS_INT from, from_byte, to, to_byte; | |
7741 | Lisp_Object dst_object; | |
d46c5b12 | 7742 | { |
df7492f9 KH |
7743 | int count = specpdl_ptr - specpdl; |
7744 | unsigned char *destination; | |
7745 | EMACS_INT dst_bytes; | |
7746 | EMACS_INT chars = to - from; | |
7747 | EMACS_INT bytes = to_byte - from_byte; | |
7748 | Lisp_Object attrs; | |
4776e638 | 7749 | int saved_pt = -1, saved_pt_byte; |
64cedb0c | 7750 | int need_marker_adjustment = 0; |
b3bfad50 | 7751 | Lisp_Object old_deactivate_mark; |
d46c5b12 | 7752 | |
b3bfad50 | 7753 | old_deactivate_mark = Vdeactivate_mark; |
93dec019 | 7754 | |
df7492f9 | 7755 | if (NILP (dst_object)) |
d46c5b12 | 7756 | { |
df7492f9 KH |
7757 | destination = coding->destination; |
7758 | dst_bytes = coding->dst_bytes; | |
d46c5b12 | 7759 | } |
93dec019 | 7760 | |
df7492f9 KH |
7761 | coding->src_object = src_object; |
7762 | coding->src_chars = chars; | |
7763 | coding->src_bytes = bytes; | |
7764 | coding->src_multibyte = chars < bytes; | |
70ad9fc4 | 7765 | |
df7492f9 | 7766 | if (STRINGP (src_object)) |
d46c5b12 | 7767 | { |
df7492f9 KH |
7768 | coding->src_pos = from; |
7769 | coding->src_pos_byte = from_byte; | |
d46c5b12 | 7770 | } |
df7492f9 | 7771 | else if (BUFFERP (src_object)) |
88993dfd | 7772 | { |
df7492f9 KH |
7773 | set_buffer_internal (XBUFFER (src_object)); |
7774 | if (from != GPT) | |
7775 | move_gap_both (from, from_byte); | |
7776 | if (EQ (src_object, dst_object)) | |
fb88bf2d | 7777 | { |
64cedb0c KH |
7778 | struct Lisp_Marker *tail; |
7779 | ||
7780 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7781 | { | |
7782 | tail->need_adjustment | |
7783 | = tail->charpos == (tail->insertion_type ? from : to); | |
7784 | need_marker_adjustment |= tail->need_adjustment; | |
7785 | } | |
4776e638 | 7786 | saved_pt = PT, saved_pt_byte = PT_BYTE; |
df7492f9 | 7787 | TEMP_SET_PT_BOTH (from, from_byte); |
f4a3cc44 | 7788 | current_buffer->text->inhibit_shrinking = 1; |
df7492f9 KH |
7789 | del_range_both (from, from_byte, to, to_byte, 1); |
7790 | coding->src_pos = -chars; | |
7791 | coding->src_pos_byte = -bytes; | |
fb88bf2d | 7792 | } |
df7492f9 | 7793 | else |
fb88bf2d | 7794 | { |
df7492f9 KH |
7795 | coding->src_pos = from; |
7796 | coding->src_pos_byte = from_byte; | |
fb88bf2d | 7797 | } |
88993dfd KH |
7798 | } |
7799 | ||
df7492f9 KH |
7800 | if (CODING_REQUIRE_DETECTION (coding)) |
7801 | detect_coding (coding); | |
7802 | attrs = CODING_ID_ATTRS (coding->id); | |
d46c5b12 | 7803 | |
2cb26057 KH |
7804 | if (EQ (dst_object, Qt) |
7805 | || (! NILP (CODING_ATTR_POST_READ (attrs)) | |
7806 | && NILP (dst_object))) | |
b73bfc1c | 7807 | { |
a1567c45 SM |
7808 | coding->dst_multibyte = !CODING_FOR_UNIBYTE (coding); |
7809 | coding->dst_object = code_conversion_save (1, coding->dst_multibyte); | |
df7492f9 KH |
7810 | coding->dst_pos = BEG; |
7811 | coding->dst_pos_byte = BEG_BYTE; | |
b73bfc1c | 7812 | } |
df7492f9 | 7813 | else if (BUFFERP (dst_object)) |
d46c5b12 | 7814 | { |
24a73b0a | 7815 | code_conversion_save (0, 0); |
df7492f9 KH |
7816 | coding->dst_object = dst_object; |
7817 | coding->dst_pos = BUF_PT (XBUFFER (dst_object)); | |
7818 | coding->dst_pos_byte = BUF_PT_BYTE (XBUFFER (dst_object)); | |
7819 | coding->dst_multibyte | |
7820 | = ! NILP (XBUFFER (dst_object)->enable_multibyte_characters); | |
d46c5b12 KH |
7821 | } |
7822 | else | |
7823 | { | |
24a73b0a | 7824 | code_conversion_save (0, 0); |
df7492f9 | 7825 | coding->dst_object = Qnil; |
0154725e SM |
7826 | /* Most callers presume this will return a multibyte result, and they |
7827 | won't use `binary' or `raw-text' anyway, so let's not worry about | |
7828 | CODING_FOR_UNIBYTE. */ | |
bb555731 | 7829 | coding->dst_multibyte = 1; |
d46c5b12 KH |
7830 | } |
7831 | ||
df7492f9 | 7832 | decode_coding (coding); |
fa46990e | 7833 | |
df7492f9 KH |
7834 | if (BUFFERP (coding->dst_object)) |
7835 | set_buffer_internal (XBUFFER (coding->dst_object)); | |
d46c5b12 | 7836 | |
df7492f9 | 7837 | if (! NILP (CODING_ATTR_POST_READ (attrs))) |
d46c5b12 | 7838 | { |
b3bfad50 | 7839 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
df7492f9 | 7840 | EMACS_INT prev_Z = Z, prev_Z_BYTE = Z_BYTE; |
2b4f9037 | 7841 | Lisp_Object val; |
d46c5b12 | 7842 | |
c0cc7f7f | 7843 | TEMP_SET_PT_BOTH (coding->dst_pos, coding->dst_pos_byte); |
b3bfad50 KH |
7844 | GCPRO5 (coding->src_object, coding->dst_object, src_object, dst_object, |
7845 | old_deactivate_mark); | |
d4850d67 KH |
7846 | val = safe_call1 (CODING_ATTR_POST_READ (attrs), |
7847 | make_number (coding->produced_char)); | |
df7492f9 KH |
7848 | UNGCPRO; |
7849 | CHECK_NATNUM (val); | |
7850 | coding->produced_char += Z - prev_Z; | |
7851 | coding->produced += Z_BYTE - prev_Z_BYTE; | |
d46c5b12 | 7852 | } |
de79a6a5 | 7853 | |
df7492f9 | 7854 | if (EQ (dst_object, Qt)) |
ec6d2bb8 | 7855 | { |
df7492f9 KH |
7856 | coding->dst_object = Fbuffer_string (); |
7857 | } | |
7858 | else if (NILP (dst_object) && BUFFERP (coding->dst_object)) | |
7859 | { | |
7860 | set_buffer_internal (XBUFFER (coding->dst_object)); | |
7861 | if (dst_bytes < coding->produced) | |
7862 | { | |
b3bfad50 | 7863 | destination = xrealloc (destination, coding->produced); |
df7492f9 KH |
7864 | if (! destination) |
7865 | { | |
065e3595 KH |
7866 | record_conversion_result (coding, |
7867 | CODING_RESULT_INSUFFICIENT_DST); | |
df7492f9 KH |
7868 | unbind_to (count, Qnil); |
7869 | return; | |
7870 | } | |
7871 | if (BEGV < GPT && GPT < BEGV + coding->produced_char) | |
7872 | move_gap_both (BEGV, BEGV_BYTE); | |
7873 | bcopy (BEGV_ADDR, destination, coding->produced); | |
7874 | coding->destination = destination; | |
d46c5b12 | 7875 | } |
ec6d2bb8 | 7876 | } |
b73bfc1c | 7877 | |
4776e638 KH |
7878 | if (saved_pt >= 0) |
7879 | { | |
7880 | /* This is the case of: | |
7881 | (BUFFERP (src_object) && EQ (src_object, dst_object)) | |
7882 | As we have moved PT while replacing the original buffer | |
7883 | contents, we must recover it now. */ | |
7884 | set_buffer_internal (XBUFFER (src_object)); | |
f4a3cc44 | 7885 | current_buffer->text->inhibit_shrinking = 0; |
4776e638 KH |
7886 | if (saved_pt < from) |
7887 | TEMP_SET_PT_BOTH (saved_pt, saved_pt_byte); | |
7888 | else if (saved_pt < from + chars) | |
7889 | TEMP_SET_PT_BOTH (from, from_byte); | |
7890 | else if (! NILP (current_buffer->enable_multibyte_characters)) | |
7891 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced_char - chars), | |
7892 | saved_pt_byte + (coding->produced - bytes)); | |
7893 | else | |
7894 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced - bytes), | |
7895 | saved_pt_byte + (coding->produced - bytes)); | |
64cedb0c KH |
7896 | |
7897 | if (need_marker_adjustment) | |
7898 | { | |
7899 | struct Lisp_Marker *tail; | |
7900 | ||
7901 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7902 | if (tail->need_adjustment) | |
7903 | { | |
7904 | tail->need_adjustment = 0; | |
7905 | if (tail->insertion_type) | |
7906 | { | |
7907 | tail->bytepos = from_byte; | |
7908 | tail->charpos = from; | |
7909 | } | |
7910 | else | |
7911 | { | |
7912 | tail->bytepos = from_byte + coding->produced; | |
7913 | tail->charpos | |
7914 | = (NILP (current_buffer->enable_multibyte_characters) | |
7915 | ? tail->bytepos : from + coding->produced_char); | |
7916 | } | |
7917 | } | |
7918 | } | |
d46c5b12 | 7919 | } |
4776e638 | 7920 | |
b3bfad50 | 7921 | Vdeactivate_mark = old_deactivate_mark; |
065e3595 | 7922 | unbind_to (count, coding->dst_object); |
d46c5b12 KH |
7923 | } |
7924 | ||
d46c5b12 | 7925 | |
df7492f9 KH |
7926 | void |
7927 | encode_coding_object (coding, src_object, from, from_byte, to, to_byte, | |
7928 | dst_object) | |
d46c5b12 | 7929 | struct coding_system *coding; |
df7492f9 KH |
7930 | Lisp_Object src_object; |
7931 | EMACS_INT from, from_byte, to, to_byte; | |
7932 | Lisp_Object dst_object; | |
d46c5b12 | 7933 | { |
b73bfc1c | 7934 | int count = specpdl_ptr - specpdl; |
df7492f9 KH |
7935 | EMACS_INT chars = to - from; |
7936 | EMACS_INT bytes = to_byte - from_byte; | |
7937 | Lisp_Object attrs; | |
4776e638 | 7938 | int saved_pt = -1, saved_pt_byte; |
64cedb0c | 7939 | int need_marker_adjustment = 0; |
c02d943b | 7940 | int kill_src_buffer = 0; |
b3bfad50 | 7941 | Lisp_Object old_deactivate_mark; |
df7492f9 | 7942 | |
b3bfad50 | 7943 | old_deactivate_mark = Vdeactivate_mark; |
df7492f9 KH |
7944 | |
7945 | coding->src_object = src_object; | |
7946 | coding->src_chars = chars; | |
7947 | coding->src_bytes = bytes; | |
7948 | coding->src_multibyte = chars < bytes; | |
7949 | ||
7950 | attrs = CODING_ID_ATTRS (coding->id); | |
7951 | ||
64cedb0c KH |
7952 | if (EQ (src_object, dst_object)) |
7953 | { | |
7954 | struct Lisp_Marker *tail; | |
7955 | ||
7956 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7957 | { | |
7958 | tail->need_adjustment | |
7959 | = tail->charpos == (tail->insertion_type ? from : to); | |
7960 | need_marker_adjustment |= tail->need_adjustment; | |
7961 | } | |
7962 | } | |
7963 | ||
df7492f9 | 7964 | if (! NILP (CODING_ATTR_PRE_WRITE (attrs))) |
6bac5b12 | 7965 | { |
24a73b0a | 7966 | coding->src_object = code_conversion_save (1, coding->src_multibyte); |
df7492f9 KH |
7967 | set_buffer_internal (XBUFFER (coding->src_object)); |
7968 | if (STRINGP (src_object)) | |
7969 | insert_from_string (src_object, from, from_byte, chars, bytes, 0); | |
7970 | else if (BUFFERP (src_object)) | |
7971 | insert_from_buffer (XBUFFER (src_object), from, chars, 0); | |
7972 | else | |
7973 | insert_1_both (coding->source + from, chars, bytes, 0, 0, 0); | |
d46c5b12 | 7974 | |
df7492f9 KH |
7975 | if (EQ (src_object, dst_object)) |
7976 | { | |
7977 | set_buffer_internal (XBUFFER (src_object)); | |
4776e638 | 7978 | saved_pt = PT, saved_pt_byte = PT_BYTE; |
df7492f9 KH |
7979 | del_range_both (from, from_byte, to, to_byte, 1); |
7980 | set_buffer_internal (XBUFFER (coding->src_object)); | |
7981 | } | |
7982 | ||
d4850d67 KH |
7983 | { |
7984 | Lisp_Object args[3]; | |
b3bfad50 | 7985 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
d4850d67 | 7986 | |
b3bfad50 KH |
7987 | GCPRO5 (coding->src_object, coding->dst_object, src_object, dst_object, |
7988 | old_deactivate_mark); | |
d4850d67 KH |
7989 | args[0] = CODING_ATTR_PRE_WRITE (attrs); |
7990 | args[1] = make_number (BEG); | |
7991 | args[2] = make_number (Z); | |
7992 | safe_call (3, args); | |
b3bfad50 | 7993 | UNGCPRO; |
d4850d67 | 7994 | } |
c02d943b KH |
7995 | if (XBUFFER (coding->src_object) != current_buffer) |
7996 | kill_src_buffer = 1; | |
ac87bbef | 7997 | coding->src_object = Fcurrent_buffer (); |
df7492f9 KH |
7998 | if (BEG != GPT) |
7999 | move_gap_both (BEG, BEG_BYTE); | |
8000 | coding->src_chars = Z - BEG; | |
8001 | coding->src_bytes = Z_BYTE - BEG_BYTE; | |
8002 | coding->src_pos = BEG; | |
8003 | coding->src_pos_byte = BEG_BYTE; | |
8004 | coding->src_multibyte = Z < Z_BYTE; | |
8005 | } | |
8006 | else if (STRINGP (src_object)) | |
d46c5b12 | 8007 | { |
24a73b0a | 8008 | code_conversion_save (0, 0); |
df7492f9 KH |
8009 | coding->src_pos = from; |
8010 | coding->src_pos_byte = from_byte; | |
b73bfc1c | 8011 | } |
df7492f9 | 8012 | else if (BUFFERP (src_object)) |
b73bfc1c | 8013 | { |
24a73b0a | 8014 | code_conversion_save (0, 0); |
df7492f9 | 8015 | set_buffer_internal (XBUFFER (src_object)); |
df7492f9 | 8016 | if (EQ (src_object, dst_object)) |
d46c5b12 | 8017 | { |
4776e638 | 8018 | saved_pt = PT, saved_pt_byte = PT_BYTE; |
ff0dacd7 KH |
8019 | coding->src_object = del_range_1 (from, to, 1, 1); |
8020 | coding->src_pos = 0; | |
8021 | coding->src_pos_byte = 0; | |
d46c5b12 | 8022 | } |
df7492f9 | 8023 | else |
d46c5b12 | 8024 | { |
ff0dacd7 KH |
8025 | if (from < GPT && to >= GPT) |
8026 | move_gap_both (from, from_byte); | |
df7492f9 KH |
8027 | coding->src_pos = from; |
8028 | coding->src_pos_byte = from_byte; | |
d46c5b12 | 8029 | } |
d46c5b12 | 8030 | } |
4776e638 | 8031 | else |
24a73b0a | 8032 | code_conversion_save (0, 0); |
d46c5b12 | 8033 | |
df7492f9 | 8034 | if (BUFFERP (dst_object)) |
88993dfd | 8035 | { |
df7492f9 | 8036 | coding->dst_object = dst_object; |
28f67a95 KH |
8037 | if (EQ (src_object, dst_object)) |
8038 | { | |
8039 | coding->dst_pos = from; | |
8040 | coding->dst_pos_byte = from_byte; | |
8041 | } | |
8042 | else | |
8043 | { | |
319a3947 KH |
8044 | struct buffer *current = current_buffer; |
8045 | ||
8046 | set_buffer_temp (XBUFFER (dst_object)); | |
8047 | coding->dst_pos = PT; | |
8048 | coding->dst_pos_byte = PT_BYTE; | |
8049 | move_gap_both (coding->dst_pos, coding->dst_pos_byte); | |
8050 | set_buffer_temp (current); | |
28f67a95 | 8051 | } |
df7492f9 KH |
8052 | coding->dst_multibyte |
8053 | = ! NILP (XBUFFER (dst_object)->enable_multibyte_characters); | |
88993dfd | 8054 | } |
df7492f9 | 8055 | else if (EQ (dst_object, Qt)) |
d46c5b12 | 8056 | { |
df7492f9 | 8057 | coding->dst_object = Qnil; |
df7492f9 | 8058 | coding->dst_bytes = coding->src_chars; |
ac87bbef KH |
8059 | if (coding->dst_bytes == 0) |
8060 | coding->dst_bytes = 1; | |
8061 | coding->destination = (unsigned char *) xmalloc (coding->dst_bytes); | |
df7492f9 | 8062 | coding->dst_multibyte = 0; |
d46c5b12 KH |
8063 | } |
8064 | else | |
8065 | { | |
df7492f9 KH |
8066 | coding->dst_object = Qnil; |
8067 | coding->dst_multibyte = 0; | |
d46c5b12 KH |
8068 | } |
8069 | ||
df7492f9 | 8070 | encode_coding (coding); |
d46c5b12 | 8071 | |
df7492f9 | 8072 | if (EQ (dst_object, Qt)) |
d46c5b12 | 8073 | { |
df7492f9 KH |
8074 | if (BUFFERP (coding->dst_object)) |
8075 | coding->dst_object = Fbuffer_string (); | |
8076 | else | |
d46c5b12 | 8077 | { |
df7492f9 KH |
8078 | coding->dst_object |
8079 | = make_unibyte_string ((char *) coding->destination, | |
8080 | coding->produced); | |
8081 | xfree (coding->destination); | |
d46c5b12 | 8082 | } |
4ed46869 | 8083 | } |
d46c5b12 | 8084 | |
4776e638 KH |
8085 | if (saved_pt >= 0) |
8086 | { | |
8087 | /* This is the case of: | |
8088 | (BUFFERP (src_object) && EQ (src_object, dst_object)) | |
8089 | As we have moved PT while replacing the original buffer | |
8090 | contents, we must recover it now. */ | |
8091 | set_buffer_internal (XBUFFER (src_object)); | |
8092 | if (saved_pt < from) | |
8093 | TEMP_SET_PT_BOTH (saved_pt, saved_pt_byte); | |
8094 | else if (saved_pt < from + chars) | |
8095 | TEMP_SET_PT_BOTH (from, from_byte); | |
8096 | else if (! NILP (current_buffer->enable_multibyte_characters)) | |
8097 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced_char - chars), | |
8098 | saved_pt_byte + (coding->produced - bytes)); | |
d46c5b12 | 8099 | else |
4776e638 KH |
8100 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced - bytes), |
8101 | saved_pt_byte + (coding->produced - bytes)); | |
64cedb0c KH |
8102 | |
8103 | if (need_marker_adjustment) | |
8104 | { | |
8105 | struct Lisp_Marker *tail; | |
8106 | ||
8107 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
8108 | if (tail->need_adjustment) | |
8109 | { | |
8110 | tail->need_adjustment = 0; | |
8111 | if (tail->insertion_type) | |
8112 | { | |
8113 | tail->bytepos = from_byte; | |
8114 | tail->charpos = from; | |
8115 | } | |
8116 | else | |
8117 | { | |
8118 | tail->bytepos = from_byte + coding->produced; | |
8119 | tail->charpos | |
8120 | = (NILP (current_buffer->enable_multibyte_characters) | |
8121 | ? tail->bytepos : from + coding->produced_char); | |
8122 | } | |
8123 | } | |
8124 | } | |
4776e638 KH |
8125 | } |
8126 | ||
c02d943b KH |
8127 | if (kill_src_buffer) |
8128 | Fkill_buffer (coding->src_object); | |
b3bfad50 KH |
8129 | |
8130 | Vdeactivate_mark = old_deactivate_mark; | |
df7492f9 | 8131 | unbind_to (count, Qnil); |
b73bfc1c KH |
8132 | } |
8133 | ||
df7492f9 | 8134 | |
b73bfc1c | 8135 | Lisp_Object |
df7492f9 | 8136 | preferred_coding_system () |
b73bfc1c | 8137 | { |
df7492f9 | 8138 | int id = coding_categories[coding_priorities[0]].id; |
2391eaa4 | 8139 | |
df7492f9 | 8140 | return CODING_ID_NAME (id); |
4ed46869 KH |
8141 | } |
8142 | ||
8143 | \f | |
8144 | #ifdef emacs | |
1397dc18 | 8145 | /*** 8. Emacs Lisp library functions ***/ |
4ed46869 | 8146 | |
4ed46869 | 8147 | DEFUN ("coding-system-p", Fcoding_system_p, Scoding_system_p, 1, 1, 0, |
48b0f3ae | 8148 | doc: /* Return t if OBJECT is nil or a coding-system. |
df7492f9 | 8149 | See the documentation of `define-coding-system' for information |
48b0f3ae | 8150 | about coding-system objects. */) |
d4a1d553 JB |
8151 | (object) |
8152 | Lisp_Object object; | |
4ed46869 | 8153 | { |
d4a1d553 JB |
8154 | if (NILP (object) |
8155 | || CODING_SYSTEM_ID (object) >= 0) | |
44e8490d | 8156 | return Qt; |
d4a1d553 JB |
8157 | if (! SYMBOLP (object) |
8158 | || NILP (Fget (object, Qcoding_system_define_form))) | |
44e8490d KH |
8159 | return Qnil; |
8160 | return Qt; | |
4ed46869 KH |
8161 | } |
8162 | ||
9d991de8 RS |
8163 | DEFUN ("read-non-nil-coding-system", Fread_non_nil_coding_system, |
8164 | Sread_non_nil_coding_system, 1, 1, 0, | |
48b0f3ae PJ |
8165 | doc: /* Read a coding system from the minibuffer, prompting with string PROMPT. */) |
8166 | (prompt) | |
4ed46869 KH |
8167 | Lisp_Object prompt; |
8168 | { | |
e0e989f6 | 8169 | Lisp_Object val; |
9d991de8 RS |
8170 | do |
8171 | { | |
4608c386 KH |
8172 | val = Fcompleting_read (prompt, Vcoding_system_alist, Qnil, |
8173 | Qt, Qnil, Qcoding_system_history, Qnil, Qnil); | |
9d991de8 | 8174 | } |
8f924df7 | 8175 | while (SCHARS (val) == 0); |
e0e989f6 | 8176 | return (Fintern (val, Qnil)); |
4ed46869 KH |
8177 | } |
8178 | ||
9b787f3e | 8179 | DEFUN ("read-coding-system", Fread_coding_system, Sread_coding_system, 1, 2, 0, |
48b0f3ae | 8180 | doc: /* Read a coding system from the minibuffer, prompting with string PROMPT. |
c7183fb8 GM |
8181 | If the user enters null input, return second argument DEFAULT-CODING-SYSTEM. |
8182 | Ignores case when completing coding systems (all Emacs coding systems | |
8183 | are lower-case). */) | |
48b0f3ae | 8184 | (prompt, default_coding_system) |
9b787f3e | 8185 | Lisp_Object prompt, default_coding_system; |
4ed46869 | 8186 | { |
f44d27ce | 8187 | Lisp_Object val; |
c7183fb8 GM |
8188 | int count = SPECPDL_INDEX (); |
8189 | ||
9b787f3e | 8190 | if (SYMBOLP (default_coding_system)) |
57d25e6f | 8191 | default_coding_system = SYMBOL_NAME (default_coding_system); |
c7183fb8 | 8192 | specbind (Qcompletion_ignore_case, Qt); |
4608c386 | 8193 | val = Fcompleting_read (prompt, Vcoding_system_alist, Qnil, |
9b787f3e RS |
8194 | Qt, Qnil, Qcoding_system_history, |
8195 | default_coding_system, Qnil); | |
c7183fb8 | 8196 | unbind_to (count, Qnil); |
8f924df7 | 8197 | return (SCHARS (val) == 0 ? Qnil : Fintern (val, Qnil)); |
4ed46869 KH |
8198 | } |
8199 | ||
8200 | DEFUN ("check-coding-system", Fcheck_coding_system, Scheck_coding_system, | |
8201 | 1, 1, 0, | |
48b0f3ae | 8202 | doc: /* Check validity of CODING-SYSTEM. |
9ffd559c KH |
8203 | If valid, return CODING-SYSTEM, else signal a `coding-system-error' error. |
8204 | It is valid if it is nil or a symbol defined as a coding system by the | |
8205 | function `define-coding-system'. */) | |
df7492f9 | 8206 | (coding_system) |
4ed46869 KH |
8207 | Lisp_Object coding_system; |
8208 | { | |
44e8490d KH |
8209 | Lisp_Object define_form; |
8210 | ||
8211 | define_form = Fget (coding_system, Qcoding_system_define_form); | |
8212 | if (! NILP (define_form)) | |
8213 | { | |
8214 | Fput (coding_system, Qcoding_system_define_form, Qnil); | |
8215 | safe_eval (define_form); | |
8216 | } | |
4ed46869 KH |
8217 | if (!NILP (Fcoding_system_p (coding_system))) |
8218 | return coding_system; | |
fcad4ec4 | 8219 | xsignal1 (Qcoding_system_error, coding_system); |
4ed46869 | 8220 | } |
df7492f9 | 8221 | |
3a73fa5d | 8222 | \f |
89528eb3 KH |
8223 | /* Detect how the bytes at SRC of length SRC_BYTES are encoded. If |
8224 | HIGHEST is nonzero, return the coding system of the highest | |
8225 | priority among the detected coding systems. Otherwize return a | |
8226 | list of detected coding systems sorted by their priorities. If | |
8227 | MULTIBYTEP is nonzero, it is assumed that the bytes are in correct | |
8228 | multibyte form but contains only ASCII and eight-bit chars. | |
8229 | Otherwise, the bytes are raw bytes. | |
8230 | ||
8231 | CODING-SYSTEM controls the detection as below: | |
8232 | ||
8233 | If it is nil, detect both text-format and eol-format. If the | |
8234 | text-format part of CODING-SYSTEM is already specified | |
8235 | (e.g. `iso-latin-1'), detect only eol-format. If the eol-format | |
8236 | part of CODING-SYSTEM is already specified (e.g. `undecided-unix'), | |
8237 | detect only text-format. */ | |
8238 | ||
d46c5b12 | 8239 | Lisp_Object |
24a73b0a KH |
8240 | detect_coding_system (src, src_chars, src_bytes, highest, multibytep, |
8241 | coding_system) | |
8f924df7 | 8242 | const unsigned char *src; |
13818c30 SM |
8243 | EMACS_INT src_chars, src_bytes; |
8244 | int highest; | |
0a28aafb | 8245 | int multibytep; |
df7492f9 | 8246 | Lisp_Object coding_system; |
4ed46869 | 8247 | { |
8f924df7 | 8248 | const unsigned char *src_end = src + src_bytes; |
df7492f9 | 8249 | Lisp_Object attrs, eol_type; |
4533845d | 8250 | Lisp_Object val = Qnil; |
df7492f9 | 8251 | struct coding_system coding; |
89528eb3 | 8252 | int id; |
ff0dacd7 | 8253 | struct coding_detection_info detect_info; |
24a73b0a | 8254 | enum coding_category base_category; |
2f3cbb32 | 8255 | int null_byte_found = 0, eight_bit_found = 0; |
b73bfc1c | 8256 | |
df7492f9 KH |
8257 | if (NILP (coding_system)) |
8258 | coding_system = Qundecided; | |
8259 | setup_coding_system (coding_system, &coding); | |
8260 | attrs = CODING_ID_ATTRS (coding.id); | |
8261 | eol_type = CODING_ID_EOL_TYPE (coding.id); | |
89528eb3 | 8262 | coding_system = CODING_ATTR_BASE_NAME (attrs); |
4ed46869 | 8263 | |
df7492f9 | 8264 | coding.source = src; |
24a73b0a | 8265 | coding.src_chars = src_chars; |
df7492f9 KH |
8266 | coding.src_bytes = src_bytes; |
8267 | coding.src_multibyte = multibytep; | |
8268 | coding.consumed = 0; | |
89528eb3 | 8269 | coding.mode |= CODING_MODE_LAST_BLOCK; |
c0e16b14 | 8270 | coding.head_ascii = 0; |
d46c5b12 | 8271 | |
ff0dacd7 | 8272 | detect_info.checked = detect_info.found = detect_info.rejected = 0; |
d46c5b12 | 8273 | |
89528eb3 | 8274 | /* At first, detect text-format if necessary. */ |
24a73b0a KH |
8275 | base_category = XINT (CODING_ATTR_CATEGORY (attrs)); |
8276 | if (base_category == coding_category_undecided) | |
4ed46869 | 8277 | { |
ff0dacd7 KH |
8278 | enum coding_category category; |
8279 | struct coding_system *this; | |
8280 | int c, i; | |
88993dfd | 8281 | |
24a73b0a | 8282 | /* Skip all ASCII bytes except for a few ISO2022 controls. */ |
2f3cbb32 | 8283 | for (; src < src_end; src++) |
4ed46869 | 8284 | { |
df7492f9 | 8285 | c = *src; |
6cb21a4f | 8286 | if (c & 0x80) |
6cb21a4f | 8287 | { |
2f3cbb32 | 8288 | eight_bit_found = 1; |
2f3cbb32 KH |
8289 | if (null_byte_found) |
8290 | break; | |
8291 | } | |
c0e16b14 | 8292 | else if (c < 0x20) |
2f3cbb32 KH |
8293 | { |
8294 | if ((c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO) | |
8295 | && ! inhibit_iso_escape_detection | |
8296 | && ! detect_info.checked) | |
6cb21a4f | 8297 | { |
2f3cbb32 KH |
8298 | if (detect_coding_iso_2022 (&coding, &detect_info)) |
8299 | { | |
8300 | /* We have scanned the whole data. */ | |
8301 | if (! (detect_info.rejected & CATEGORY_MASK_ISO_7_ELSE)) | |
c0e16b14 KH |
8302 | { |
8303 | /* We didn't find an 8-bit code. We may | |
8304 | have found a null-byte, but it's very | |
8305 | rare that a binary file confirm to | |
8306 | ISO-2022. */ | |
8307 | src = src_end; | |
8308 | coding.head_ascii = src - coding.source; | |
8309 | } | |
8310 | detect_info.rejected |= ~CATEGORY_MASK_ISO_ESCAPE; | |
2f3cbb32 KH |
8311 | break; |
8312 | } | |
8313 | } | |
97b1b294 | 8314 | else if (! c && !inhibit_null_byte_detection) |
2f3cbb32 KH |
8315 | { |
8316 | null_byte_found = 1; | |
8317 | if (eight_bit_found) | |
8318 | break; | |
6cb21a4f | 8319 | } |
c006c0c8 KH |
8320 | if (! eight_bit_found) |
8321 | coding.head_ascii++; | |
6cb21a4f | 8322 | } |
c006c0c8 | 8323 | else if (! eight_bit_found) |
c0e16b14 | 8324 | coding.head_ascii++; |
4ed46869 | 8325 | } |
88993dfd | 8326 | |
2f3cbb32 KH |
8327 | if (null_byte_found || eight_bit_found |
8328 | || coding.head_ascii < coding.src_bytes | |
6cb21a4f KH |
8329 | || detect_info.found) |
8330 | { | |
2f3cbb32 | 8331 | if (coding.head_ascii == coding.src_bytes) |
6cb21a4f KH |
8332 | /* As all bytes are 7-bit, we can ignore non-ISO-2022 codings. */ |
8333 | for (i = 0; i < coding_category_raw_text; i++) | |
ff0dacd7 | 8334 | { |
6cb21a4f | 8335 | category = coding_priorities[i]; |
c7266f4a | 8336 | this = coding_categories + category; |
6cb21a4f | 8337 | if (detect_info.found & (1 << category)) |
ff0dacd7 KH |
8338 | break; |
8339 | } | |
6cb21a4f | 8340 | else |
2f3cbb32 KH |
8341 | { |
8342 | if (null_byte_found) | |
8343 | { | |
8344 | detect_info.checked |= ~CATEGORY_MASK_UTF_16; | |
8345 | detect_info.rejected |= ~CATEGORY_MASK_UTF_16; | |
8346 | } | |
8347 | for (i = 0; i < coding_category_raw_text; i++) | |
8348 | { | |
8349 | category = coding_priorities[i]; | |
8350 | this = coding_categories + category; | |
6cb21a4f | 8351 | |
2f3cbb32 KH |
8352 | if (this->id < 0) |
8353 | { | |
8354 | /* No coding system of this category is defined. */ | |
8355 | detect_info.rejected |= (1 << category); | |
8356 | } | |
8357 | else if (category >= coding_category_raw_text) | |
8358 | continue; | |
8359 | else if (detect_info.checked & (1 << category)) | |
8360 | { | |
8361 | if (highest | |
8362 | && (detect_info.found & (1 << category))) | |
6cb21a4f | 8363 | break; |
2f3cbb32 KH |
8364 | } |
8365 | else if ((*(this->detector)) (&coding, &detect_info) | |
8366 | && highest | |
8367 | && (detect_info.found & (1 << category))) | |
8368 | { | |
8369 | if (category == coding_category_utf_16_auto) | |
8370 | { | |
8371 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
8372 | category = coding_category_utf_16_le; | |
8373 | else | |
8374 | category = coding_category_utf_16_be; | |
8375 | } | |
8376 | break; | |
8377 | } | |
8378 | } | |
8379 | } | |
6cb21a4f | 8380 | } |
ec6d2bb8 | 8381 | |
4cddb209 KH |
8382 | if ((detect_info.rejected & CATEGORY_MASK_ANY) == CATEGORY_MASK_ANY |
8383 | || null_byte_found) | |
ec6d2bb8 | 8384 | { |
ff0dacd7 | 8385 | detect_info.found = CATEGORY_MASK_RAW_TEXT; |
4cddb209 | 8386 | id = CODING_SYSTEM_ID (Qno_conversion); |
89528eb3 KH |
8387 | val = Fcons (make_number (id), Qnil); |
8388 | } | |
ff0dacd7 | 8389 | else if (! detect_info.rejected && ! detect_info.found) |
89528eb3 | 8390 | { |
ff0dacd7 | 8391 | detect_info.found = CATEGORY_MASK_ANY; |
89528eb3 KH |
8392 | id = coding_categories[coding_category_undecided].id; |
8393 | val = Fcons (make_number (id), Qnil); | |
8394 | } | |
8395 | else if (highest) | |
8396 | { | |
ff0dacd7 | 8397 | if (detect_info.found) |
ec6d2bb8 | 8398 | { |
ff0dacd7 KH |
8399 | detect_info.found = 1 << category; |
8400 | val = Fcons (make_number (this->id), Qnil); | |
8401 | } | |
8402 | else | |
8403 | for (i = 0; i < coding_category_raw_text; i++) | |
8404 | if (! (detect_info.rejected & (1 << coding_priorities[i]))) | |
8405 | { | |
8406 | detect_info.found = 1 << coding_priorities[i]; | |
8407 | id = coding_categories[coding_priorities[i]].id; | |
8408 | val = Fcons (make_number (id), Qnil); | |
8409 | break; | |
8410 | } | |
8411 | } | |
89528eb3 KH |
8412 | else |
8413 | { | |
ff0dacd7 KH |
8414 | int mask = detect_info.rejected | detect_info.found; |
8415 | int found = 0; | |
ec6d2bb8 | 8416 | |
89528eb3 | 8417 | for (i = coding_category_raw_text - 1; i >= 0; i--) |
ff0dacd7 KH |
8418 | { |
8419 | category = coding_priorities[i]; | |
8420 | if (! (mask & (1 << category))) | |
ec6d2bb8 | 8421 | { |
ff0dacd7 KH |
8422 | found |= 1 << category; |
8423 | id = coding_categories[category].id; | |
c7266f4a KH |
8424 | if (id >= 0) |
8425 | val = Fcons (make_number (id), val); | |
ff0dacd7 KH |
8426 | } |
8427 | } | |
8428 | for (i = coding_category_raw_text - 1; i >= 0; i--) | |
8429 | { | |
8430 | category = coding_priorities[i]; | |
8431 | if (detect_info.found & (1 << category)) | |
8432 | { | |
8433 | id = coding_categories[category].id; | |
8434 | val = Fcons (make_number (id), val); | |
ec6d2bb8 | 8435 | } |
ec6d2bb8 | 8436 | } |
ff0dacd7 | 8437 | detect_info.found |= found; |
ec6d2bb8 | 8438 | } |
ec6d2bb8 | 8439 | } |
a470d443 KH |
8440 | else if (base_category == coding_category_utf_8_auto) |
8441 | { | |
8442 | if (detect_coding_utf_8 (&coding, &detect_info)) | |
8443 | { | |
8444 | struct coding_system *this; | |
8445 | ||
8446 | if (detect_info.found & CATEGORY_MASK_UTF_8_SIG) | |
8447 | this = coding_categories + coding_category_utf_8_sig; | |
8448 | else | |
8449 | this = coding_categories + coding_category_utf_8_nosig; | |
8450 | val = Fcons (make_number (this->id), Qnil); | |
8451 | } | |
8452 | } | |
24a73b0a KH |
8453 | else if (base_category == coding_category_utf_16_auto) |
8454 | { | |
8455 | if (detect_coding_utf_16 (&coding, &detect_info)) | |
8456 | { | |
24a73b0a KH |
8457 | struct coding_system *this; |
8458 | ||
8459 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
8460 | this = coding_categories + coding_category_utf_16_le; | |
8461 | else if (detect_info.found & CATEGORY_MASK_UTF_16_BE) | |
8462 | this = coding_categories + coding_category_utf_16_be; | |
8463 | else if (detect_info.rejected & CATEGORY_MASK_UTF_16_LE_NOSIG) | |
8464 | this = coding_categories + coding_category_utf_16_be_nosig; | |
8465 | else | |
8466 | this = coding_categories + coding_category_utf_16_le_nosig; | |
8467 | val = Fcons (make_number (this->id), Qnil); | |
8468 | } | |
8469 | } | |
df7492f9 KH |
8470 | else |
8471 | { | |
ff0dacd7 | 8472 | detect_info.found = 1 << XINT (CODING_ATTR_CATEGORY (attrs)); |
89528eb3 | 8473 | val = Fcons (make_number (coding.id), Qnil); |
4ed46869 | 8474 | } |
df7492f9 | 8475 | |
89528eb3 | 8476 | /* Then, detect eol-format if necessary. */ |
df7492f9 | 8477 | { |
4533845d | 8478 | int normal_eol = -1, utf_16_be_eol = -1, utf_16_le_eol = -1; |
df7492f9 KH |
8479 | Lisp_Object tail; |
8480 | ||
89528eb3 KH |
8481 | if (VECTORP (eol_type)) |
8482 | { | |
ff0dacd7 | 8483 | if (detect_info.found & ~CATEGORY_MASK_UTF_16) |
2f3cbb32 KH |
8484 | { |
8485 | if (null_byte_found) | |
8486 | normal_eol = EOL_SEEN_LF; | |
8487 | else | |
8488 | normal_eol = detect_eol (coding.source, src_bytes, | |
8489 | coding_category_raw_text); | |
8490 | } | |
ff0dacd7 KH |
8491 | if (detect_info.found & (CATEGORY_MASK_UTF_16_BE |
8492 | | CATEGORY_MASK_UTF_16_BE_NOSIG)) | |
89528eb3 KH |
8493 | utf_16_be_eol = detect_eol (coding.source, src_bytes, |
8494 | coding_category_utf_16_be); | |
ff0dacd7 KH |
8495 | if (detect_info.found & (CATEGORY_MASK_UTF_16_LE |
8496 | | CATEGORY_MASK_UTF_16_LE_NOSIG)) | |
89528eb3 KH |
8497 | utf_16_le_eol = detect_eol (coding.source, src_bytes, |
8498 | coding_category_utf_16_le); | |
8499 | } | |
8500 | else | |
8501 | { | |
8502 | if (EQ (eol_type, Qunix)) | |
8503 | normal_eol = utf_16_be_eol = utf_16_le_eol = EOL_SEEN_LF; | |
8504 | else if (EQ (eol_type, Qdos)) | |
8505 | normal_eol = utf_16_be_eol = utf_16_le_eol = EOL_SEEN_CRLF; | |
8506 | else | |
8507 | normal_eol = utf_16_be_eol = utf_16_le_eol = EOL_SEEN_CR; | |
8508 | } | |
8509 | ||
df7492f9 KH |
8510 | for (tail = val; CONSP (tail); tail = XCDR (tail)) |
8511 | { | |
89528eb3 | 8512 | enum coding_category category; |
df7492f9 | 8513 | int this_eol; |
89528eb3 KH |
8514 | |
8515 | id = XINT (XCAR (tail)); | |
8516 | attrs = CODING_ID_ATTRS (id); | |
8517 | category = XINT (CODING_ATTR_CATEGORY (attrs)); | |
8518 | eol_type = CODING_ID_EOL_TYPE (id); | |
df7492f9 KH |
8519 | if (VECTORP (eol_type)) |
8520 | { | |
89528eb3 KH |
8521 | if (category == coding_category_utf_16_be |
8522 | || category == coding_category_utf_16_be_nosig) | |
8523 | this_eol = utf_16_be_eol; | |
8524 | else if (category == coding_category_utf_16_le | |
8525 | || category == coding_category_utf_16_le_nosig) | |
8526 | this_eol = utf_16_le_eol; | |
df7492f9 | 8527 | else |
89528eb3 KH |
8528 | this_eol = normal_eol; |
8529 | ||
df7492f9 KH |
8530 | if (this_eol == EOL_SEEN_LF) |
8531 | XSETCAR (tail, AREF (eol_type, 0)); | |
8532 | else if (this_eol == EOL_SEEN_CRLF) | |
8533 | XSETCAR (tail, AREF (eol_type, 1)); | |
8534 | else if (this_eol == EOL_SEEN_CR) | |
8535 | XSETCAR (tail, AREF (eol_type, 2)); | |
89528eb3 KH |
8536 | else |
8537 | XSETCAR (tail, CODING_ID_NAME (id)); | |
df7492f9 | 8538 | } |
89528eb3 KH |
8539 | else |
8540 | XSETCAR (tail, CODING_ID_NAME (id)); | |
df7492f9 KH |
8541 | } |
8542 | } | |
ec6d2bb8 | 8543 | |
4533845d | 8544 | return (highest ? (CONSP (val) ? XCAR (val) : Qnil) : val); |
ec6d2bb8 KH |
8545 | } |
8546 | ||
ec6d2bb8 | 8547 | |
d46c5b12 KH |
8548 | DEFUN ("detect-coding-region", Fdetect_coding_region, Sdetect_coding_region, |
8549 | 2, 3, 0, | |
48b0f3ae PJ |
8550 | doc: /* Detect coding system of the text in the region between START and END. |
8551 | Return a list of possible coding systems ordered by priority. | |
b811c52b KH |
8552 | The coding systems to try and their priorities follows what |
8553 | the function `coding-system-priority-list' (which see) returns. | |
ec6d2bb8 | 8554 | |
12e0131a | 8555 | If only ASCII characters are found (except for such ISO-2022 control |
d4a1d553 JB |
8556 | characters as ESC), it returns a list of single element `undecided' |
8557 | or its subsidiary coding system according to a detected end-of-line | |
8558 | format. | |
ec6d2bb8 | 8559 | |
48b0f3ae PJ |
8560 | If optional argument HIGHEST is non-nil, return the coding system of |
8561 | highest priority. */) | |
8562 | (start, end, highest) | |
d46c5b12 KH |
8563 | Lisp_Object start, end, highest; |
8564 | { | |
8565 | int from, to; | |
8566 | int from_byte, to_byte; | |
ec6d2bb8 | 8567 | |
b7826503 PJ |
8568 | CHECK_NUMBER_COERCE_MARKER (start); |
8569 | CHECK_NUMBER_COERCE_MARKER (end); | |
ec6d2bb8 | 8570 | |
d46c5b12 KH |
8571 | validate_region (&start, &end); |
8572 | from = XINT (start), to = XINT (end); | |
8573 | from_byte = CHAR_TO_BYTE (from); | |
8574 | to_byte = CHAR_TO_BYTE (to); | |
ec6d2bb8 | 8575 | |
d46c5b12 KH |
8576 | if (from < GPT && to >= GPT) |
8577 | move_gap_both (to, to_byte); | |
c210f766 | 8578 | |
d46c5b12 | 8579 | return detect_coding_system (BYTE_POS_ADDR (from_byte), |
24a73b0a | 8580 | to - from, to_byte - from_byte, |
0a28aafb KH |
8581 | !NILP (highest), |
8582 | !NILP (current_buffer | |
df7492f9 KH |
8583 | ->enable_multibyte_characters), |
8584 | Qnil); | |
ec6d2bb8 KH |
8585 | } |
8586 | ||
d46c5b12 KH |
8587 | DEFUN ("detect-coding-string", Fdetect_coding_string, Sdetect_coding_string, |
8588 | 1, 2, 0, | |
48b0f3ae PJ |
8589 | doc: /* Detect coding system of the text in STRING. |
8590 | Return a list of possible coding systems ordered by priority. | |
67ceab9d KH |
8591 | The coding systems to try and their priorities follows what |
8592 | the function `coding-system-priority-list' (which see) returns. | |
fb88bf2d | 8593 | |
12e0131a | 8594 | If only ASCII characters are found (except for such ISO-2022 control |
d4a1d553 JB |
8595 | characters as ESC), it returns a list of single element `undecided' |
8596 | or its subsidiary coding system according to a detected end-of-line | |
8597 | format. | |
d46c5b12 | 8598 | |
48b0f3ae PJ |
8599 | If optional argument HIGHEST is non-nil, return the coding system of |
8600 | highest priority. */) | |
8601 | (string, highest) | |
d46c5b12 KH |
8602 | Lisp_Object string, highest; |
8603 | { | |
b7826503 | 8604 | CHECK_STRING (string); |
b73bfc1c | 8605 | |
24a73b0a KH |
8606 | return detect_coding_system (SDATA (string), |
8607 | SCHARS (string), SBYTES (string), | |
8f924df7 | 8608 | !NILP (highest), STRING_MULTIBYTE (string), |
df7492f9 | 8609 | Qnil); |
4ed46869 | 8610 | } |
4ed46869 | 8611 | |
b73bfc1c | 8612 | |
df7492f9 KH |
8613 | static INLINE int |
8614 | char_encodable_p (c, attrs) | |
8615 | int c; | |
8616 | Lisp_Object attrs; | |
05e6f5dc | 8617 | { |
df7492f9 | 8618 | Lisp_Object tail; |
df7492f9 | 8619 | struct charset *charset; |
7d64c6ad | 8620 | Lisp_Object translation_table; |
d46c5b12 | 8621 | |
7d64c6ad | 8622 | translation_table = CODING_ATTR_TRANS_TBL (attrs); |
a6f87d34 | 8623 | if (! NILP (translation_table)) |
7d64c6ad | 8624 | c = translate_char (translation_table, c); |
df7492f9 KH |
8625 | for (tail = CODING_ATTR_CHARSET_LIST (attrs); |
8626 | CONSP (tail); tail = XCDR (tail)) | |
e133c8fa | 8627 | { |
df7492f9 KH |
8628 | charset = CHARSET_FROM_ID (XINT (XCAR (tail))); |
8629 | if (CHAR_CHARSET_P (c, charset)) | |
8630 | break; | |
e133c8fa | 8631 | } |
df7492f9 | 8632 | return (! NILP (tail)); |
05e6f5dc | 8633 | } |
83fa074f | 8634 | |
fb88bf2d | 8635 | |
df7492f9 KH |
8636 | /* Return a list of coding systems that safely encode the text between |
8637 | START and END. If EXCLUDE is non-nil, it is a list of coding | |
8638 | systems not to check. The returned list doesn't contain any such | |
48468dac | 8639 | coding systems. In any case, if the text contains only ASCII or is |
df7492f9 | 8640 | unibyte, return t. */ |
e077cc80 | 8641 | |
df7492f9 KH |
8642 | DEFUN ("find-coding-systems-region-internal", |
8643 | Ffind_coding_systems_region_internal, | |
8644 | Sfind_coding_systems_region_internal, 2, 3, 0, | |
8645 | doc: /* Internal use only. */) | |
8646 | (start, end, exclude) | |
8647 | Lisp_Object start, end, exclude; | |
8648 | { | |
8649 | Lisp_Object coding_attrs_list, safe_codings; | |
8650 | EMACS_INT start_byte, end_byte; | |
7c78e542 | 8651 | const unsigned char *p, *pbeg, *pend; |
df7492f9 | 8652 | int c; |
0e727afa | 8653 | Lisp_Object tail, elt, work_table; |
d46c5b12 | 8654 | |
df7492f9 KH |
8655 | if (STRINGP (start)) |
8656 | { | |
8657 | if (!STRING_MULTIBYTE (start) | |
8f924df7 | 8658 | || SCHARS (start) == SBYTES (start)) |
df7492f9 KH |
8659 | return Qt; |
8660 | start_byte = 0; | |
8f924df7 | 8661 | end_byte = SBYTES (start); |
df7492f9 KH |
8662 | } |
8663 | else | |
d46c5b12 | 8664 | { |
df7492f9 KH |
8665 | CHECK_NUMBER_COERCE_MARKER (start); |
8666 | CHECK_NUMBER_COERCE_MARKER (end); | |
8667 | if (XINT (start) < BEG || XINT (end) > Z || XINT (start) > XINT (end)) | |
8668 | args_out_of_range (start, end); | |
8669 | if (NILP (current_buffer->enable_multibyte_characters)) | |
8670 | return Qt; | |
8671 | start_byte = CHAR_TO_BYTE (XINT (start)); | |
8672 | end_byte = CHAR_TO_BYTE (XINT (end)); | |
8673 | if (XINT (end) - XINT (start) == end_byte - start_byte) | |
8674 | return Qt; | |
d46c5b12 | 8675 | |
e1c23804 | 8676 | if (XINT (start) < GPT && XINT (end) > GPT) |
d46c5b12 | 8677 | { |
e1c23804 DL |
8678 | if ((GPT - XINT (start)) < (XINT (end) - GPT)) |
8679 | move_gap_both (XINT (start), start_byte); | |
df7492f9 | 8680 | else |
e1c23804 | 8681 | move_gap_both (XINT (end), end_byte); |
d46c5b12 KH |
8682 | } |
8683 | } | |
8684 | ||
df7492f9 KH |
8685 | coding_attrs_list = Qnil; |
8686 | for (tail = Vcoding_system_list; CONSP (tail); tail = XCDR (tail)) | |
8687 | if (NILP (exclude) | |
8688 | || NILP (Fmemq (XCAR (tail), exclude))) | |
8689 | { | |
8690 | Lisp_Object attrs; | |
d46c5b12 | 8691 | |
df7492f9 KH |
8692 | attrs = AREF (CODING_SYSTEM_SPEC (XCAR (tail)), 0); |
8693 | if (EQ (XCAR (tail), CODING_ATTR_BASE_NAME (attrs)) | |
8694 | && ! EQ (CODING_ATTR_TYPE (attrs), Qundecided)) | |
7d64c6ad KH |
8695 | { |
8696 | ASET (attrs, coding_attr_trans_tbl, | |
2170c8f0 | 8697 | get_translation_table (attrs, 1, NULL)); |
7d64c6ad KH |
8698 | coding_attrs_list = Fcons (attrs, coding_attrs_list); |
8699 | } | |
df7492f9 | 8700 | } |
d46c5b12 | 8701 | |
df7492f9 | 8702 | if (STRINGP (start)) |
8f924df7 | 8703 | p = pbeg = SDATA (start); |
df7492f9 KH |
8704 | else |
8705 | p = pbeg = BYTE_POS_ADDR (start_byte); | |
8706 | pend = p + (end_byte - start_byte); | |
b843d1ae | 8707 | |
df7492f9 KH |
8708 | while (p < pend && ASCII_BYTE_P (*p)) p++; |
8709 | while (p < pend && ASCII_BYTE_P (*(pend - 1))) pend--; | |
d46c5b12 | 8710 | |
0e727afa | 8711 | work_table = Fmake_char_table (Qnil, Qnil); |
05e6f5dc | 8712 | while (p < pend) |
72d1a715 | 8713 | { |
df7492f9 KH |
8714 | if (ASCII_BYTE_P (*p)) |
8715 | p++; | |
72d1a715 RS |
8716 | else |
8717 | { | |
df7492f9 | 8718 | c = STRING_CHAR_ADVANCE (p); |
0e727afa YM |
8719 | if (!NILP (char_table_ref (work_table, c))) |
8720 | /* This character was already checked. Ignore it. */ | |
8721 | continue; | |
12410ef1 | 8722 | |
df7492f9 KH |
8723 | charset_map_loaded = 0; |
8724 | for (tail = coding_attrs_list; CONSP (tail);) | |
8725 | { | |
8726 | elt = XCAR (tail); | |
8727 | if (NILP (elt)) | |
8728 | tail = XCDR (tail); | |
8729 | else if (char_encodable_p (c, elt)) | |
8730 | tail = XCDR (tail); | |
8731 | else if (CONSP (XCDR (tail))) | |
8732 | { | |
8733 | XSETCAR (tail, XCAR (XCDR (tail))); | |
8734 | XSETCDR (tail, XCDR (XCDR (tail))); | |
8735 | } | |
8736 | else | |
8737 | { | |
8738 | XSETCAR (tail, Qnil); | |
8739 | tail = XCDR (tail); | |
8740 | } | |
8741 | } | |
8742 | if (charset_map_loaded) | |
8743 | { | |
8744 | EMACS_INT p_offset = p - pbeg, pend_offset = pend - pbeg; | |
05e6f5dc | 8745 | |
df7492f9 | 8746 | if (STRINGP (start)) |
8f924df7 | 8747 | pbeg = SDATA (start); |
df7492f9 KH |
8748 | else |
8749 | pbeg = BYTE_POS_ADDR (start_byte); | |
8750 | p = pbeg + p_offset; | |
8751 | pend = pbeg + pend_offset; | |
8752 | } | |
0e727afa | 8753 | char_table_set (work_table, c, Qt); |
df7492f9 | 8754 | } |
ec6d2bb8 | 8755 | } |
fb88bf2d | 8756 | |
988b3759 | 8757 | safe_codings = list2 (Qraw_text, Qno_conversion); |
df7492f9 KH |
8758 | for (tail = coding_attrs_list; CONSP (tail); tail = XCDR (tail)) |
8759 | if (! NILP (XCAR (tail))) | |
8760 | safe_codings = Fcons (CODING_ATTR_BASE_NAME (XCAR (tail)), safe_codings); | |
ec6d2bb8 | 8761 | |
05e6f5dc KH |
8762 | return safe_codings; |
8763 | } | |
4956c225 | 8764 | |
d46c5b12 | 8765 | |
8f924df7 KH |
8766 | DEFUN ("unencodable-char-position", Funencodable_char_position, |
8767 | Sunencodable_char_position, 3, 5, 0, | |
8768 | doc: /* | |
8769 | Return position of first un-encodable character in a region. | |
d4a1d553 | 8770 | START and END specify the region and CODING-SYSTEM specifies the |
8f924df7 | 8771 | encoding to check. Return nil if CODING-SYSTEM does encode the region. |
d46c5b12 | 8772 | |
8f924df7 KH |
8773 | If optional 4th argument COUNT is non-nil, it specifies at most how |
8774 | many un-encodable characters to search. In this case, the value is a | |
8775 | list of positions. | |
d46c5b12 | 8776 | |
8f924df7 KH |
8777 | If optional 5th argument STRING is non-nil, it is a string to search |
8778 | for un-encodable characters. In that case, START and END are indexes | |
8779 | to the string. */) | |
8780 | (start, end, coding_system, count, string) | |
8781 | Lisp_Object start, end, coding_system, count, string; | |
8782 | { | |
8783 | int n; | |
8784 | struct coding_system coding; | |
7d64c6ad | 8785 | Lisp_Object attrs, charset_list, translation_table; |
8f924df7 KH |
8786 | Lisp_Object positions; |
8787 | int from, to; | |
8788 | const unsigned char *p, *stop, *pend; | |
8789 | int ascii_compatible; | |
fb88bf2d | 8790 | |
8f924df7 KH |
8791 | setup_coding_system (Fcheck_coding_system (coding_system), &coding); |
8792 | attrs = CODING_ID_ATTRS (coding.id); | |
8793 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) | |
8794 | return Qnil; | |
8795 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); | |
8796 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
2170c8f0 | 8797 | translation_table = get_translation_table (attrs, 1, NULL); |
fb88bf2d | 8798 | |
8f924df7 KH |
8799 | if (NILP (string)) |
8800 | { | |
8801 | validate_region (&start, &end); | |
8802 | from = XINT (start); | |
8803 | to = XINT (end); | |
8804 | if (NILP (current_buffer->enable_multibyte_characters) | |
8805 | || (ascii_compatible | |
8806 | && (to - from) == (CHAR_TO_BYTE (to) - (CHAR_TO_BYTE (from))))) | |
8807 | return Qnil; | |
8808 | p = CHAR_POS_ADDR (from); | |
8809 | pend = CHAR_POS_ADDR (to); | |
8810 | if (from < GPT && to >= GPT) | |
8811 | stop = GPT_ADDR; | |
8812 | else | |
8813 | stop = pend; | |
8814 | } | |
8815 | else | |
8816 | { | |
8817 | CHECK_STRING (string); | |
8818 | CHECK_NATNUM (start); | |
8819 | CHECK_NATNUM (end); | |
8820 | from = XINT (start); | |
8821 | to = XINT (end); | |
8822 | if (from > to | |
8823 | || to > SCHARS (string)) | |
8824 | args_out_of_range_3 (string, start, end); | |
8825 | if (! STRING_MULTIBYTE (string)) | |
8826 | return Qnil; | |
8827 | p = SDATA (string) + string_char_to_byte (string, from); | |
8828 | stop = pend = SDATA (string) + string_char_to_byte (string, to); | |
8829 | if (ascii_compatible && (to - from) == (pend - p)) | |
8830 | return Qnil; | |
8831 | } | |
f2558efd | 8832 | |
8f924df7 KH |
8833 | if (NILP (count)) |
8834 | n = 1; | |
8835 | else | |
b73bfc1c | 8836 | { |
8f924df7 KH |
8837 | CHECK_NATNUM (count); |
8838 | n = XINT (count); | |
b73bfc1c KH |
8839 | } |
8840 | ||
8f924df7 KH |
8841 | positions = Qnil; |
8842 | while (1) | |
d46c5b12 | 8843 | { |
8f924df7 | 8844 | int c; |
ec6d2bb8 | 8845 | |
8f924df7 KH |
8846 | if (ascii_compatible) |
8847 | while (p < stop && ASCII_BYTE_P (*p)) | |
8848 | p++, from++; | |
8849 | if (p >= stop) | |
0e79d667 | 8850 | { |
8f924df7 KH |
8851 | if (p >= pend) |
8852 | break; | |
8853 | stop = pend; | |
8854 | p = GAP_END_ADDR; | |
0e79d667 | 8855 | } |
ec6d2bb8 | 8856 | |
8f924df7 KH |
8857 | c = STRING_CHAR_ADVANCE (p); |
8858 | if (! (ASCII_CHAR_P (c) && ascii_compatible) | |
7d64c6ad KH |
8859 | && ! char_charset (translate_char (translation_table, c), |
8860 | charset_list, NULL)) | |
ec6d2bb8 | 8861 | { |
8f924df7 KH |
8862 | positions = Fcons (make_number (from), positions); |
8863 | n--; | |
8864 | if (n == 0) | |
8865 | break; | |
ec6d2bb8 KH |
8866 | } |
8867 | ||
8f924df7 KH |
8868 | from++; |
8869 | } | |
d46c5b12 | 8870 | |
8f924df7 KH |
8871 | return (NILP (count) ? Fcar (positions) : Fnreverse (positions)); |
8872 | } | |
d46c5b12 | 8873 | |
d46c5b12 | 8874 | |
df7492f9 KH |
8875 | DEFUN ("check-coding-systems-region", Fcheck_coding_systems_region, |
8876 | Scheck_coding_systems_region, 3, 3, 0, | |
8877 | doc: /* Check if the region is encodable by coding systems. | |
d46c5b12 | 8878 | |
df7492f9 KH |
8879 | START and END are buffer positions specifying the region. |
8880 | CODING-SYSTEM-LIST is a list of coding systems to check. | |
d46c5b12 | 8881 | |
df7492f9 | 8882 | The value is an alist ((CODING-SYSTEM POS0 POS1 ...) ...), where |
d4a1d553 | 8883 | CODING-SYSTEM is a member of CODING-SYSTEM-LIST and can't encode the |
df7492f9 KH |
8884 | whole region, POS0, POS1, ... are buffer positions where non-encodable |
8885 | characters are found. | |
93dec019 | 8886 | |
df7492f9 KH |
8887 | If all coding systems in CODING-SYSTEM-LIST can encode the region, the |
8888 | value is nil. | |
93dec019 | 8889 | |
df7492f9 KH |
8890 | START may be a string. In that case, check if the string is |
8891 | encodable, and the value contains indices to the string instead of | |
5704f39a KH |
8892 | buffer positions. END is ignored. |
8893 | ||
4c1958f4 | 8894 | If the current buffer (or START if it is a string) is unibyte, the value |
5704f39a | 8895 | is nil. */) |
df7492f9 KH |
8896 | (start, end, coding_system_list) |
8897 | Lisp_Object start, end, coding_system_list; | |
05e6f5dc | 8898 | { |
df7492f9 KH |
8899 | Lisp_Object list; |
8900 | EMACS_INT start_byte, end_byte; | |
8901 | int pos; | |
7c78e542 | 8902 | const unsigned char *p, *pbeg, *pend; |
df7492f9 | 8903 | int c; |
7d64c6ad | 8904 | Lisp_Object tail, elt, attrs; |
70ad9fc4 | 8905 | |
05e6f5dc KH |
8906 | if (STRINGP (start)) |
8907 | { | |
df7492f9 | 8908 | if (!STRING_MULTIBYTE (start) |
4c1958f4 | 8909 | || SCHARS (start) == SBYTES (start)) |
df7492f9 KH |
8910 | return Qnil; |
8911 | start_byte = 0; | |
8f924df7 | 8912 | end_byte = SBYTES (start); |
df7492f9 | 8913 | pos = 0; |
d46c5b12 | 8914 | } |
05e6f5dc | 8915 | else |
b73bfc1c | 8916 | { |
b7826503 PJ |
8917 | CHECK_NUMBER_COERCE_MARKER (start); |
8918 | CHECK_NUMBER_COERCE_MARKER (end); | |
05e6f5dc KH |
8919 | if (XINT (start) < BEG || XINT (end) > Z || XINT (start) > XINT (end)) |
8920 | args_out_of_range (start, end); | |
8921 | if (NILP (current_buffer->enable_multibyte_characters)) | |
df7492f9 KH |
8922 | return Qnil; |
8923 | start_byte = CHAR_TO_BYTE (XINT (start)); | |
8924 | end_byte = CHAR_TO_BYTE (XINT (end)); | |
8925 | if (XINT (end) - XINT (start) == end_byte - start_byte) | |
5704f39a | 8926 | return Qnil; |
df7492f9 | 8927 | |
e1c23804 | 8928 | if (XINT (start) < GPT && XINT (end) > GPT) |
b73bfc1c | 8929 | { |
e1c23804 DL |
8930 | if ((GPT - XINT (start)) < (XINT (end) - GPT)) |
8931 | move_gap_both (XINT (start), start_byte); | |
df7492f9 | 8932 | else |
e1c23804 | 8933 | move_gap_both (XINT (end), end_byte); |
b73bfc1c | 8934 | } |
e1c23804 | 8935 | pos = XINT (start); |
b73bfc1c | 8936 | } |
7553d0e1 | 8937 | |
df7492f9 KH |
8938 | list = Qnil; |
8939 | for (tail = coding_system_list; CONSP (tail); tail = XCDR (tail)) | |
12410ef1 | 8940 | { |
df7492f9 | 8941 | elt = XCAR (tail); |
7d64c6ad | 8942 | attrs = AREF (CODING_SYSTEM_SPEC (elt), 0); |
2170c8f0 KH |
8943 | ASET (attrs, coding_attr_trans_tbl, |
8944 | get_translation_table (attrs, 1, NULL)); | |
7d64c6ad | 8945 | list = Fcons (Fcons (elt, Fcons (attrs, Qnil)), list); |
12410ef1 KH |
8946 | } |
8947 | ||
df7492f9 | 8948 | if (STRINGP (start)) |
8f924df7 | 8949 | p = pbeg = SDATA (start); |
72d1a715 | 8950 | else |
df7492f9 KH |
8951 | p = pbeg = BYTE_POS_ADDR (start_byte); |
8952 | pend = p + (end_byte - start_byte); | |
4ed46869 | 8953 | |
df7492f9 KH |
8954 | while (p < pend && ASCII_BYTE_P (*p)) p++, pos++; |
8955 | while (p < pend && ASCII_BYTE_P (*(pend - 1))) pend--; | |
ec6d2bb8 | 8956 | |
df7492f9 | 8957 | while (p < pend) |
d46c5b12 | 8958 | { |
df7492f9 KH |
8959 | if (ASCII_BYTE_P (*p)) |
8960 | p++; | |
e133c8fa | 8961 | else |
05e6f5dc | 8962 | { |
df7492f9 KH |
8963 | c = STRING_CHAR_ADVANCE (p); |
8964 | ||
8965 | charset_map_loaded = 0; | |
8966 | for (tail = list; CONSP (tail); tail = XCDR (tail)) | |
8967 | { | |
8968 | elt = XCDR (XCAR (tail)); | |
8969 | if (! char_encodable_p (c, XCAR (elt))) | |
8970 | XSETCDR (elt, Fcons (make_number (pos), XCDR (elt))); | |
8971 | } | |
8972 | if (charset_map_loaded) | |
8973 | { | |
8974 | EMACS_INT p_offset = p - pbeg, pend_offset = pend - pbeg; | |
8975 | ||
8976 | if (STRINGP (start)) | |
8f924df7 | 8977 | pbeg = SDATA (start); |
df7492f9 KH |
8978 | else |
8979 | pbeg = BYTE_POS_ADDR (start_byte); | |
8980 | p = pbeg + p_offset; | |
8981 | pend = pbeg + pend_offset; | |
8982 | } | |
05e6f5dc | 8983 | } |
df7492f9 | 8984 | pos++; |
d46c5b12 | 8985 | } |
4ed46869 | 8986 | |
df7492f9 KH |
8987 | tail = list; |
8988 | list = Qnil; | |
8989 | for (; CONSP (tail); tail = XCDR (tail)) | |
ec6d2bb8 | 8990 | { |
df7492f9 KH |
8991 | elt = XCAR (tail); |
8992 | if (CONSP (XCDR (XCDR (elt)))) | |
8993 | list = Fcons (Fcons (XCAR (elt), Fnreverse (XCDR (XCDR (elt)))), | |
8994 | list); | |
ec6d2bb8 | 8995 | } |
2b4f9037 | 8996 | |
df7492f9 | 8997 | return list; |
d46c5b12 KH |
8998 | } |
8999 | ||
3fd9494b | 9000 | |
b73bfc1c | 9001 | Lisp_Object |
df7492f9 KH |
9002 | code_convert_region (start, end, coding_system, dst_object, encodep, norecord) |
9003 | Lisp_Object start, end, coding_system, dst_object; | |
9004 | int encodep, norecord; | |
4ed46869 | 9005 | { |
3a73fa5d | 9006 | struct coding_system coding; |
df7492f9 KH |
9007 | EMACS_INT from, from_byte, to, to_byte; |
9008 | Lisp_Object src_object; | |
4ed46869 | 9009 | |
b7826503 PJ |
9010 | CHECK_NUMBER_COERCE_MARKER (start); |
9011 | CHECK_NUMBER_COERCE_MARKER (end); | |
df7492f9 KH |
9012 | if (NILP (coding_system)) |
9013 | coding_system = Qno_conversion; | |
9014 | else | |
9015 | CHECK_CODING_SYSTEM (coding_system); | |
9016 | src_object = Fcurrent_buffer (); | |
9017 | if (NILP (dst_object)) | |
9018 | dst_object = src_object; | |
9019 | else if (! EQ (dst_object, Qt)) | |
9020 | CHECK_BUFFER (dst_object); | |
3a73fa5d | 9021 | |
d46c5b12 KH |
9022 | validate_region (&start, &end); |
9023 | from = XFASTINT (start); | |
df7492f9 | 9024 | from_byte = CHAR_TO_BYTE (from); |
d46c5b12 | 9025 | to = XFASTINT (end); |
df7492f9 | 9026 | to_byte = CHAR_TO_BYTE (to); |
764ca8da | 9027 | |
df7492f9 KH |
9028 | setup_coding_system (coding_system, &coding); |
9029 | coding.mode |= CODING_MODE_LAST_BLOCK; | |
ec6d2bb8 | 9030 | |
df7492f9 KH |
9031 | if (encodep) |
9032 | encode_coding_object (&coding, src_object, from, from_byte, to, to_byte, | |
9033 | dst_object); | |
9034 | else | |
9035 | decode_coding_object (&coding, src_object, from, from_byte, to, to_byte, | |
9036 | dst_object); | |
9037 | if (! norecord) | |
9038 | Vlast_coding_system_used = CODING_ID_NAME (coding.id); | |
ec6d2bb8 | 9039 | |
df7492f9 KH |
9040 | return (BUFFERP (dst_object) |
9041 | ? make_number (coding.produced_char) | |
9042 | : coding.dst_object); | |
4031e2bf | 9043 | } |
78108bcd | 9044 | |
4ed46869 | 9045 | |
4031e2bf | 9046 | DEFUN ("decode-coding-region", Fdecode_coding_region, Sdecode_coding_region, |
df7492f9 | 9047 | 3, 4, "r\nzCoding system: ", |
48b0f3ae | 9048 | doc: /* Decode the current region from the specified coding system. |
df7492f9 KH |
9049 | When called from a program, takes four arguments: |
9050 | START, END, CODING-SYSTEM, and DESTINATION. | |
9051 | START and END are buffer positions. | |
8844fa83 | 9052 | |
df7492f9 | 9053 | Optional 4th arguments DESTINATION specifies where the decoded text goes. |
2354b80b | 9054 | If nil, the region between START and END is replaced by the decoded text. |
1560f91a EZ |
9055 | If buffer, the decoded text is inserted in that buffer after point (point |
9056 | does not move). | |
446dcd75 | 9057 | In those cases, the length of the decoded text is returned. |
319a3947 | 9058 | If DESTINATION is t, the decoded text is returned. |
8844fa83 | 9059 | |
48b0f3ae PJ |
9060 | This function sets `last-coding-system-used' to the precise coding system |
9061 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
319a3947 | 9062 | not fully specified.) */) |
df7492f9 KH |
9063 | (start, end, coding_system, destination) |
9064 | Lisp_Object start, end, coding_system, destination; | |
4031e2bf | 9065 | { |
df7492f9 | 9066 | return code_convert_region (start, end, coding_system, destination, 0, 0); |
3a73fa5d | 9067 | } |
8844fa83 | 9068 | |
3a73fa5d | 9069 | DEFUN ("encode-coding-region", Fencode_coding_region, Sencode_coding_region, |
df7492f9 KH |
9070 | 3, 4, "r\nzCoding system: ", |
9071 | doc: /* Encode the current region by specified coding system. | |
d4a1d553 JB |
9072 | When called from a program, takes four arguments: |
9073 | START, END, CODING-SYSTEM and DESTINATION. | |
9074 | START and END are buffer positions. | |
d46c5b12 | 9075 | |
df7492f9 KH |
9076 | Optional 4th arguments DESTINATION specifies where the encoded text goes. |
9077 | If nil, the region between START and END is replace by the encoded text. | |
1560f91a EZ |
9078 | If buffer, the encoded text is inserted in that buffer after point (point |
9079 | does not move). | |
446dcd75 | 9080 | In those cases, the length of the encoded text is returned. |
319a3947 | 9081 | If DESTINATION is t, the encoded text is returned. |
2391eaa4 | 9082 | |
48b0f3ae PJ |
9083 | This function sets `last-coding-system-used' to the precise coding system |
9084 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
319a3947 | 9085 | not fully specified.) */) |
df7492f9 KH |
9086 | (start, end, coding_system, destination) |
9087 | Lisp_Object start, end, coding_system, destination; | |
3a73fa5d | 9088 | { |
df7492f9 | 9089 | return code_convert_region (start, end, coding_system, destination, 1, 0); |
b73bfc1c KH |
9090 | } |
9091 | ||
9092 | Lisp_Object | |
df7492f9 KH |
9093 | code_convert_string (string, coding_system, dst_object, |
9094 | encodep, nocopy, norecord) | |
9095 | Lisp_Object string, coding_system, dst_object; | |
9096 | int encodep, nocopy, norecord; | |
b73bfc1c | 9097 | { |
4031e2bf | 9098 | struct coding_system coding; |
df7492f9 | 9099 | EMACS_INT chars, bytes; |
ec6d2bb8 | 9100 | |
b7826503 | 9101 | CHECK_STRING (string); |
d46c5b12 | 9102 | if (NILP (coding_system)) |
4956c225 | 9103 | { |
df7492f9 KH |
9104 | if (! norecord) |
9105 | Vlast_coding_system_used = Qno_conversion; | |
9106 | if (NILP (dst_object)) | |
9107 | return (nocopy ? Fcopy_sequence (string) : string); | |
4956c225 | 9108 | } |
b73bfc1c | 9109 | |
df7492f9 KH |
9110 | if (NILP (coding_system)) |
9111 | coding_system = Qno_conversion; | |
9112 | else | |
9113 | CHECK_CODING_SYSTEM (coding_system); | |
9114 | if (NILP (dst_object)) | |
9115 | dst_object = Qt; | |
9116 | else if (! EQ (dst_object, Qt)) | |
9117 | CHECK_BUFFER (dst_object); | |
73be902c | 9118 | |
df7492f9 | 9119 | setup_coding_system (coding_system, &coding); |
d46c5b12 | 9120 | coding.mode |= CODING_MODE_LAST_BLOCK; |
8f924df7 KH |
9121 | chars = SCHARS (string); |
9122 | bytes = SBYTES (string); | |
df7492f9 KH |
9123 | if (encodep) |
9124 | encode_coding_object (&coding, string, 0, 0, chars, bytes, dst_object); | |
9125 | else | |
9126 | decode_coding_object (&coding, string, 0, 0, chars, bytes, dst_object); | |
9127 | if (! norecord) | |
9128 | Vlast_coding_system_used = CODING_ID_NAME (coding.id); | |
73be902c | 9129 | |
df7492f9 KH |
9130 | return (BUFFERP (dst_object) |
9131 | ? make_number (coding.produced_char) | |
9132 | : coding.dst_object); | |
4ed46869 | 9133 | } |
73be902c | 9134 | |
b73bfc1c | 9135 | |
ecec61c1 | 9136 | /* Encode or decode STRING according to CODING_SYSTEM. |
ec6d2bb8 | 9137 | Do not set Vlast_coding_system_used. |
4ed46869 | 9138 | |
ec6d2bb8 KH |
9139 | This function is called only from macros DECODE_FILE and |
9140 | ENCODE_FILE, thus we ignore character composition. */ | |
4ed46869 | 9141 | |
ecec61c1 KH |
9142 | Lisp_Object |
9143 | code_convert_string_norecord (string, coding_system, encodep) | |
9144 | Lisp_Object string, coding_system; | |
9145 | int encodep; | |
4ed46869 | 9146 | { |
0be8721c | 9147 | return code_convert_string (string, coding_system, Qt, encodep, 0, 1); |
4ed46869 KH |
9148 | } |
9149 | ||
4ed46869 | 9150 | |
df7492f9 KH |
9151 | DEFUN ("decode-coding-string", Fdecode_coding_string, Sdecode_coding_string, |
9152 | 2, 4, 0, | |
9153 | doc: /* Decode STRING which is encoded in CODING-SYSTEM, and return the result. | |
9154 | ||
9155 | Optional third arg NOCOPY non-nil means it is OK to return STRING itself | |
9156 | if the decoding operation is trivial. | |
ecec61c1 | 9157 | |
d4a1d553 | 9158 | Optional fourth arg BUFFER non-nil means that the decoded text is |
1560f91a EZ |
9159 | inserted in that buffer after point (point does not move). In this |
9160 | case, the return value is the length of the decoded text. | |
ecec61c1 | 9161 | |
df7492f9 KH |
9162 | This function sets `last-coding-system-used' to the precise coding system |
9163 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
d4a1d553 | 9164 | not fully specified.) */) |
df7492f9 KH |
9165 | (string, coding_system, nocopy, buffer) |
9166 | Lisp_Object string, coding_system, nocopy, buffer; | |
4ed46869 | 9167 | { |
df7492f9 KH |
9168 | return code_convert_string (string, coding_system, buffer, |
9169 | 0, ! NILP (nocopy), 0); | |
4ed46869 KH |
9170 | } |
9171 | ||
df7492f9 KH |
9172 | DEFUN ("encode-coding-string", Fencode_coding_string, Sencode_coding_string, |
9173 | 2, 4, 0, | |
9174 | doc: /* Encode STRING to CODING-SYSTEM, and return the result. | |
9175 | ||
9176 | Optional third arg NOCOPY non-nil means it is OK to return STRING | |
9177 | itself if the encoding operation is trivial. | |
9178 | ||
d4a1d553 | 9179 | Optional fourth arg BUFFER non-nil means that the encoded text is |
1560f91a EZ |
9180 | inserted in that buffer after point (point does not move). In this |
9181 | case, the return value is the length of the encoded text. | |
df7492f9 KH |
9182 | |
9183 | This function sets `last-coding-system-used' to the precise coding system | |
9184 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
9185 | not fully specified.) */) | |
9186 | (string, coding_system, nocopy, buffer) | |
9187 | Lisp_Object string, coding_system, nocopy, buffer; | |
4ed46869 | 9188 | { |
df7492f9 | 9189 | return code_convert_string (string, coding_system, buffer, |
c197f191 | 9190 | 1, ! NILP (nocopy), 1); |
4ed46869 | 9191 | } |
df7492f9 | 9192 | |
3a73fa5d | 9193 | \f |
4ed46869 | 9194 | DEFUN ("decode-sjis-char", Fdecode_sjis_char, Sdecode_sjis_char, 1, 1, 0, |
48b0f3ae PJ |
9195 | doc: /* Decode a Japanese character which has CODE in shift_jis encoding. |
9196 | Return the corresponding character. */) | |
9197 | (code) | |
4ed46869 | 9198 | Lisp_Object code; |
4ed46869 | 9199 | { |
df7492f9 KH |
9200 | Lisp_Object spec, attrs, val; |
9201 | struct charset *charset_roman, *charset_kanji, *charset_kana, *charset; | |
9202 | int c; | |
4ed46869 | 9203 | |
df7492f9 KH |
9204 | CHECK_NATNUM (code); |
9205 | c = XFASTINT (code); | |
9206 | CHECK_CODING_SYSTEM_GET_SPEC (Vsjis_coding_system, spec); | |
9207 | attrs = AREF (spec, 0); | |
4ed46869 | 9208 | |
df7492f9 KH |
9209 | if (ASCII_BYTE_P (c) |
9210 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
9211 | return code; | |
4ed46869 | 9212 | |
df7492f9 KH |
9213 | val = CODING_ATTR_CHARSET_LIST (attrs); |
9214 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
004068e4 KH |
9215 | charset_kana = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
9216 | charset_kanji = CHARSET_FROM_ID (XINT (XCAR (val))); | |
fa42c37f | 9217 | |
df7492f9 KH |
9218 | if (c <= 0x7F) |
9219 | charset = charset_roman; | |
9220 | else if (c >= 0xA0 && c < 0xDF) | |
55ab7be3 | 9221 | { |
df7492f9 KH |
9222 | charset = charset_kana; |
9223 | c -= 0x80; | |
4ed46869 | 9224 | } |
55ab7be3 | 9225 | else |
4ed46869 | 9226 | { |
004068e4 | 9227 | int s1 = c >> 8, s2 = c & 0xFF; |
df7492f9 KH |
9228 | |
9229 | if (s1 < 0x81 || (s1 > 0x9F && s1 < 0xE0) || s1 > 0xEF | |
9230 | || s2 < 0x40 || s2 == 0x7F || s2 > 0xFC) | |
9231 | error ("Invalid code: %d", code); | |
9232 | SJIS_TO_JIS (c); | |
9233 | charset = charset_kanji; | |
4ed46869 | 9234 | } |
df7492f9 KH |
9235 | c = DECODE_CHAR (charset, c); |
9236 | if (c < 0) | |
9237 | error ("Invalid code: %d", code); | |
9238 | return make_number (c); | |
93dec019 | 9239 | } |
4ed46869 | 9240 | |
48b0f3ae | 9241 | |
4ed46869 | 9242 | DEFUN ("encode-sjis-char", Fencode_sjis_char, Sencode_sjis_char, 1, 1, 0, |
8acf0c0e | 9243 | doc: /* Encode a Japanese character CH to shift_jis encoding. |
48b0f3ae PJ |
9244 | Return the corresponding code in SJIS. */) |
9245 | (ch) | |
df7492f9 | 9246 | Lisp_Object ch; |
4ed46869 | 9247 | { |
df7492f9 KH |
9248 | Lisp_Object spec, attrs, charset_list; |
9249 | int c; | |
9250 | struct charset *charset; | |
9251 | unsigned code; | |
48b0f3ae | 9252 | |
df7492f9 KH |
9253 | CHECK_CHARACTER (ch); |
9254 | c = XFASTINT (ch); | |
9255 | CHECK_CODING_SYSTEM_GET_SPEC (Vsjis_coding_system, spec); | |
9256 | attrs = AREF (spec, 0); | |
9257 | ||
9258 | if (ASCII_CHAR_P (c) | |
9259 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
9260 | return ch; | |
9261 | ||
9262 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
9263 | charset = char_charset (c, charset_list, &code); | |
9264 | if (code == CHARSET_INVALID_CODE (charset)) | |
9265 | error ("Can't encode by shift_jis encoding: %d", c); | |
9266 | JIS_TO_SJIS (code); | |
9267 | ||
9268 | return make_number (code); | |
4ed46869 KH |
9269 | } |
9270 | ||
9271 | DEFUN ("decode-big5-char", Fdecode_big5_char, Sdecode_big5_char, 1, 1, 0, | |
48b0f3ae PJ |
9272 | doc: /* Decode a Big5 character which has CODE in BIG5 coding system. |
9273 | Return the corresponding character. */) | |
9274 | (code) | |
4ed46869 | 9275 | Lisp_Object code; |
d46c5b12 | 9276 | { |
df7492f9 KH |
9277 | Lisp_Object spec, attrs, val; |
9278 | struct charset *charset_roman, *charset_big5, *charset; | |
9279 | int c; | |
6289dd10 | 9280 | |
df7492f9 KH |
9281 | CHECK_NATNUM (code); |
9282 | c = XFASTINT (code); | |
9283 | CHECK_CODING_SYSTEM_GET_SPEC (Vbig5_coding_system, spec); | |
9284 | attrs = AREF (spec, 0); | |
4ed46869 | 9285 | |
df7492f9 KH |
9286 | if (ASCII_BYTE_P (c) |
9287 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
9288 | return code; | |
6289dd10 | 9289 | |
df7492f9 KH |
9290 | val = CODING_ATTR_CHARSET_LIST (attrs); |
9291 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
9292 | charset_big5 = CHARSET_FROM_ID (XINT (XCAR (val))); | |
c210f766 | 9293 | |
df7492f9 KH |
9294 | if (c <= 0x7F) |
9295 | charset = charset_roman; | |
c28a9453 KH |
9296 | else |
9297 | { | |
df7492f9 KH |
9298 | int b1 = c >> 8, b2 = c & 0x7F; |
9299 | if (b1 < 0xA1 || b1 > 0xFE | |
9300 | || b2 < 0x40 || (b2 > 0x7E && b2 < 0xA1) || b2 > 0xFE) | |
9301 | error ("Invalid code: %d", code); | |
9302 | charset = charset_big5; | |
c28a9453 | 9303 | } |
df7492f9 KH |
9304 | c = DECODE_CHAR (charset, (unsigned )c); |
9305 | if (c < 0) | |
9306 | error ("Invalid code: %d", code); | |
9307 | return make_number (c); | |
d46c5b12 | 9308 | } |
6289dd10 | 9309 | |
4ed46869 | 9310 | DEFUN ("encode-big5-char", Fencode_big5_char, Sencode_big5_char, 1, 1, 0, |
8acf0c0e | 9311 | doc: /* Encode the Big5 character CH to BIG5 coding system. |
48b0f3ae PJ |
9312 | Return the corresponding character code in Big5. */) |
9313 | (ch) | |
4ed46869 KH |
9314 | Lisp_Object ch; |
9315 | { | |
df7492f9 KH |
9316 | Lisp_Object spec, attrs, charset_list; |
9317 | struct charset *charset; | |
9318 | int c; | |
9319 | unsigned code; | |
9320 | ||
9321 | CHECK_CHARACTER (ch); | |
9322 | c = XFASTINT (ch); | |
9323 | CHECK_CODING_SYSTEM_GET_SPEC (Vbig5_coding_system, spec); | |
9324 | attrs = AREF (spec, 0); | |
9325 | if (ASCII_CHAR_P (c) | |
9326 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
9327 | return ch; | |
9328 | ||
9329 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
9330 | charset = char_charset (c, charset_list, &code); | |
9331 | if (code == CHARSET_INVALID_CODE (charset)) | |
9332 | error ("Can't encode by Big5 encoding: %d", c); | |
9333 | ||
9334 | return make_number (code); | |
4ed46869 | 9335 | } |
48b0f3ae | 9336 | |
3a73fa5d | 9337 | \f |
002fdb44 | 9338 | DEFUN ("set-terminal-coding-system-internal", Fset_terminal_coding_system_internal, |
68bba4e4 | 9339 | Sset_terminal_coding_system_internal, 1, 2, 0, |
48b0f3ae | 9340 | doc: /* Internal use only. */) |
6ed8eeff | 9341 | (coding_system, terminal) |
b74e4686 | 9342 | Lisp_Object coding_system; |
6ed8eeff | 9343 | Lisp_Object terminal; |
4ed46869 | 9344 | { |
6ed8eeff | 9345 | struct coding_system *terminal_coding = TERMINAL_TERMINAL_CODING (get_terminal (terminal, 1)); |
b7826503 | 9346 | CHECK_SYMBOL (coding_system); |
b8299c66 | 9347 | setup_coding_system (Fcheck_coding_system (coding_system), terminal_coding); |
70c22245 | 9348 | /* We had better not send unsafe characters to terminal. */ |
c73bd236 | 9349 | terminal_coding->mode |= CODING_MODE_SAFE_ENCODING; |
df7492f9 | 9350 | /* Characer composition should be disabled. */ |
c73bd236 | 9351 | terminal_coding->common_flags &= ~CODING_ANNOTATE_COMPOSITION_MASK; |
b8299c66 KL |
9352 | terminal_coding->src_multibyte = 1; |
9353 | terminal_coding->dst_multibyte = 0; | |
4ed46869 KH |
9354 | return Qnil; |
9355 | } | |
9356 | ||
c4825358 KH |
9357 | DEFUN ("set-safe-terminal-coding-system-internal", |
9358 | Fset_safe_terminal_coding_system_internal, | |
48b0f3ae | 9359 | Sset_safe_terminal_coding_system_internal, 1, 1, 0, |
ddb67bdc | 9360 | doc: /* Internal use only. */) |
48b0f3ae | 9361 | (coding_system) |
b74e4686 | 9362 | Lisp_Object coding_system; |
d46c5b12 | 9363 | { |
b7826503 | 9364 | CHECK_SYMBOL (coding_system); |
c4825358 KH |
9365 | setup_coding_system (Fcheck_coding_system (coding_system), |
9366 | &safe_terminal_coding); | |
df7492f9 KH |
9367 | /* Characer composition should be disabled. */ |
9368 | safe_terminal_coding.common_flags &= ~CODING_ANNOTATE_COMPOSITION_MASK; | |
b73bfc1c KH |
9369 | safe_terminal_coding.src_multibyte = 1; |
9370 | safe_terminal_coding.dst_multibyte = 0; | |
c4825358 KH |
9371 | return Qnil; |
9372 | } | |
4ed46869 | 9373 | |
002fdb44 | 9374 | DEFUN ("terminal-coding-system", Fterminal_coding_system, |
68bba4e4 | 9375 | Sterminal_coding_system, 0, 1, 0, |
6ed8eeff | 9376 | doc: /* Return coding system specified for terminal output on the given terminal. |
708e05dc | 9377 | TERMINAL may be a terminal object, a frame, or nil for the selected |
6ed8eeff KL |
9378 | frame's terminal device. */) |
9379 | (terminal) | |
9380 | Lisp_Object terminal; | |
4ed46869 | 9381 | { |
985773c9 MB |
9382 | struct coding_system *terminal_coding |
9383 | = TERMINAL_TERMINAL_CODING (get_terminal (terminal, 1)); | |
9384 | Lisp_Object coding_system = CODING_ID_NAME (terminal_coding->id); | |
ae6f73fa | 9385 | |
ae6f73fa | 9386 | /* For backward compatibility, return nil if it is `undecided'. */ |
f75c90a9 | 9387 | return (! EQ (coding_system, Qundecided) ? coding_system : Qnil); |
4ed46869 KH |
9388 | } |
9389 | ||
002fdb44 | 9390 | DEFUN ("set-keyboard-coding-system-internal", Fset_keyboard_coding_system_internal, |
68bba4e4 | 9391 | Sset_keyboard_coding_system_internal, 1, 2, 0, |
48b0f3ae | 9392 | doc: /* Internal use only. */) |
6ed8eeff | 9393 | (coding_system, terminal) |
4ed46869 | 9394 | Lisp_Object coding_system; |
6ed8eeff | 9395 | Lisp_Object terminal; |
4ed46869 | 9396 | { |
6ed8eeff | 9397 | struct terminal *t = get_terminal (terminal, 1); |
b7826503 | 9398 | CHECK_SYMBOL (coding_system); |
624bda09 KH |
9399 | if (NILP (coding_system)) |
9400 | coding_system = Qno_conversion; | |
9401 | else | |
9402 | Fcheck_coding_system (coding_system); | |
9403 | setup_coding_system (coding_system, TERMINAL_KEYBOARD_CODING (t)); | |
df7492f9 | 9404 | /* Characer composition should be disabled. */ |
c73bd236 MB |
9405 | TERMINAL_KEYBOARD_CODING (t)->common_flags |
9406 | &= ~CODING_ANNOTATE_COMPOSITION_MASK; | |
4ed46869 KH |
9407 | return Qnil; |
9408 | } | |
9409 | ||
9410 | DEFUN ("keyboard-coding-system", | |
985773c9 | 9411 | Fkeyboard_coding_system, Skeyboard_coding_system, 0, 1, 0, |
48b0f3ae | 9412 | doc: /* Return coding system specified for decoding keyboard input. */) |
985773c9 MB |
9413 | (terminal) |
9414 | Lisp_Object terminal; | |
4ed46869 | 9415 | { |
985773c9 MB |
9416 | return CODING_ID_NAME (TERMINAL_KEYBOARD_CODING |
9417 | (get_terminal (terminal, 1))->id); | |
4ed46869 KH |
9418 | } |
9419 | ||
4ed46869 | 9420 | \f |
a5d301df KH |
9421 | DEFUN ("find-operation-coding-system", Ffind_operation_coding_system, |
9422 | Sfind_operation_coding_system, 1, MANY, 0, | |
48b0f3ae PJ |
9423 | doc: /* Choose a coding system for an operation based on the target name. |
9424 | The value names a pair of coding systems: (DECODING-SYSTEM . ENCODING-SYSTEM). | |
9425 | DECODING-SYSTEM is the coding system to use for decoding | |
9426 | \(in case OPERATION does decoding), and ENCODING-SYSTEM is the coding system | |
9427 | for encoding (in case OPERATION does encoding). | |
05e6f5dc | 9428 | |
48b0f3ae PJ |
9429 | The first argument OPERATION specifies an I/O primitive: |
9430 | For file I/O, `insert-file-contents' or `write-region'. | |
9431 | For process I/O, `call-process', `call-process-region', or `start-process'. | |
9432 | For network I/O, `open-network-stream'. | |
05e6f5dc | 9433 | |
48b0f3ae PJ |
9434 | The remaining arguments should be the same arguments that were passed |
9435 | to the primitive. Depending on which primitive, one of those arguments | |
9436 | is selected as the TARGET. For example, if OPERATION does file I/O, | |
9437 | whichever argument specifies the file name is TARGET. | |
05e6f5dc | 9438 | |
48b0f3ae | 9439 | TARGET has a meaning which depends on OPERATION: |
b883cdb2 | 9440 | For file I/O, TARGET is a file name (except for the special case below). |
48b0f3ae | 9441 | For process I/O, TARGET is a process name. |
d4a1d553 | 9442 | For network I/O, TARGET is a service name or a port number. |
05e6f5dc | 9443 | |
d4a1d553 | 9444 | This function looks up what is specified for TARGET in |
48b0f3ae PJ |
9445 | `file-coding-system-alist', `process-coding-system-alist', |
9446 | or `network-coding-system-alist' depending on OPERATION. | |
9447 | They may specify a coding system, a cons of coding systems, | |
9448 | or a function symbol to call. | |
9449 | In the last case, we call the function with one argument, | |
9450 | which is a list of all the arguments given to this function. | |
1011c487 MB |
9451 | If the function can't decide a coding system, it can return |
9452 | `undecided' so that the normal code-detection is performed. | |
48b0f3ae | 9453 | |
b883cdb2 MB |
9454 | If OPERATION is `insert-file-contents', the argument corresponding to |
9455 | TARGET may be a cons (FILENAME . BUFFER). In that case, FILENAME is a | |
9456 | file name to look up, and BUFFER is a buffer that contains the file's | |
9457 | contents (not yet decoded). If `file-coding-system-alist' specifies a | |
9458 | function to call for FILENAME, that function should examine the | |
9459 | contents of BUFFER instead of reading the file. | |
9460 | ||
d918f936 | 9461 | usage: (find-operation-coding-system OPERATION ARGUMENTS...) */) |
48b0f3ae | 9462 | (nargs, args) |
4ed46869 KH |
9463 | int nargs; |
9464 | Lisp_Object *args; | |
6b89e3aa | 9465 | { |
4ed46869 KH |
9466 | Lisp_Object operation, target_idx, target, val; |
9467 | register Lisp_Object chain; | |
177c0ea7 | 9468 | |
4ed46869 KH |
9469 | if (nargs < 2) |
9470 | error ("Too few arguments"); | |
9471 | operation = args[0]; | |
9472 | if (!SYMBOLP (operation) | |
9473 | || !INTEGERP (target_idx = Fget (operation, Qtarget_idx))) | |
3ed051d4 | 9474 | error ("Invalid first argument"); |
4ed46869 KH |
9475 | if (nargs < 1 + XINT (target_idx)) |
9476 | error ("Too few arguments for operation: %s", | |
8f924df7 | 9477 | SDATA (SYMBOL_NAME (operation))); |
4ed46869 KH |
9478 | target = args[XINT (target_idx) + 1]; |
9479 | if (!(STRINGP (target) | |
091a0ff0 KH |
9480 | || (EQ (operation, Qinsert_file_contents) && CONSP (target) |
9481 | && STRINGP (XCAR (target)) && BUFFERP (XCDR (target))) | |
4ed46869 | 9482 | || (EQ (operation, Qopen_network_stream) && INTEGERP (target)))) |
df7492f9 | 9483 | error ("Invalid %dth argument", XINT (target_idx) + 1); |
091a0ff0 KH |
9484 | if (CONSP (target)) |
9485 | target = XCAR (target); | |
4ed46869 | 9486 | |
2e34157c RS |
9487 | chain = ((EQ (operation, Qinsert_file_contents) |
9488 | || EQ (operation, Qwrite_region)) | |
02ba4723 | 9489 | ? Vfile_coding_system_alist |
2e34157c | 9490 | : (EQ (operation, Qopen_network_stream) |
02ba4723 KH |
9491 | ? Vnetwork_coding_system_alist |
9492 | : Vprocess_coding_system_alist)); | |
4ed46869 KH |
9493 | if (NILP (chain)) |
9494 | return Qnil; | |
9495 | ||
03699b14 | 9496 | for (; CONSP (chain); chain = XCDR (chain)) |
6b89e3aa | 9497 | { |
f44d27ce | 9498 | Lisp_Object elt; |
6b89e3aa | 9499 | |
df7492f9 | 9500 | elt = XCAR (chain); |
4ed46869 KH |
9501 | if (CONSP (elt) |
9502 | && ((STRINGP (target) | |
03699b14 KR |
9503 | && STRINGP (XCAR (elt)) |
9504 | && fast_string_match (XCAR (elt), target) >= 0) | |
9505 | || (INTEGERP (target) && EQ (target, XCAR (elt))))) | |
6b89e3aa | 9506 | { |
03699b14 | 9507 | val = XCDR (elt); |
b19fd4c5 KH |
9508 | /* Here, if VAL is both a valid coding system and a valid |
9509 | function symbol, we return VAL as a coding system. */ | |
02ba4723 KH |
9510 | if (CONSP (val)) |
9511 | return val; | |
9512 | if (! SYMBOLP (val)) | |
9513 | return Qnil; | |
9514 | if (! NILP (Fcoding_system_p (val))) | |
9515 | return Fcons (val, val); | |
b19fd4c5 | 9516 | if (! NILP (Ffboundp (val))) |
6b89e3aa | 9517 | { |
e2b97060 MB |
9518 | /* We use call1 rather than safe_call1 |
9519 | so as to get bug reports about functions called here | |
9520 | which don't handle the current interface. */ | |
9521 | val = call1 (val, Flist (nargs, args)); | |
b19fd4c5 KH |
9522 | if (CONSP (val)) |
9523 | return val; | |
9524 | if (SYMBOLP (val) && ! NILP (Fcoding_system_p (val))) | |
9525 | return Fcons (val, val); | |
6b89e3aa | 9526 | } |
02ba4723 | 9527 | return Qnil; |
6b89e3aa KH |
9528 | } |
9529 | } | |
4ed46869 | 9530 | return Qnil; |
6b89e3aa KH |
9531 | } |
9532 | ||
df7492f9 | 9533 | DEFUN ("set-coding-system-priority", Fset_coding_system_priority, |
a3f6ee6d | 9534 | Sset_coding_system_priority, 0, MANY, 0, |
da7db224 | 9535 | doc: /* Assign higher priority to the coding systems given as arguments. |
d4a1d553 | 9536 | If multiple coding systems belong to the same category, |
a3181084 DL |
9537 | all but the first one are ignored. |
9538 | ||
d4a1d553 | 9539 | usage: (set-coding-system-priority &rest coding-systems) */) |
df7492f9 KH |
9540 | (nargs, args) |
9541 | int nargs; | |
9542 | Lisp_Object *args; | |
9543 | { | |
9544 | int i, j; | |
9545 | int changed[coding_category_max]; | |
9546 | enum coding_category priorities[coding_category_max]; | |
9547 | ||
9548 | bzero (changed, sizeof changed); | |
6b89e3aa | 9549 | |
df7492f9 | 9550 | for (i = j = 0; i < nargs; i++) |
6b89e3aa | 9551 | { |
df7492f9 KH |
9552 | enum coding_category category; |
9553 | Lisp_Object spec, attrs; | |
6b89e3aa | 9554 | |
df7492f9 KH |
9555 | CHECK_CODING_SYSTEM_GET_SPEC (args[i], spec); |
9556 | attrs = AREF (spec, 0); | |
9557 | category = XINT (CODING_ATTR_CATEGORY (attrs)); | |
9558 | if (changed[category]) | |
9559 | /* Ignore this coding system because a coding system of the | |
9560 | same category already had a higher priority. */ | |
9561 | continue; | |
9562 | changed[category] = 1; | |
9563 | priorities[j++] = category; | |
9564 | if (coding_categories[category].id >= 0 | |
9565 | && ! EQ (args[i], CODING_ID_NAME (coding_categories[category].id))) | |
9566 | setup_coding_system (args[i], &coding_categories[category]); | |
ff563fce | 9567 | Fset (AREF (Vcoding_category_table, category), args[i]); |
df7492f9 | 9568 | } |
6b89e3aa | 9569 | |
df7492f9 KH |
9570 | /* Now we have decided top J priorities. Reflect the order of the |
9571 | original priorities to the remaining priorities. */ | |
6b89e3aa | 9572 | |
df7492f9 | 9573 | for (i = j, j = 0; i < coding_category_max; i++, j++) |
6b89e3aa | 9574 | { |
df7492f9 KH |
9575 | while (j < coding_category_max |
9576 | && changed[coding_priorities[j]]) | |
9577 | j++; | |
9578 | if (j == coding_category_max) | |
9579 | abort (); | |
9580 | priorities[i] = coding_priorities[j]; | |
9581 | } | |
6b89e3aa | 9582 | |
df7492f9 | 9583 | bcopy (priorities, coding_priorities, sizeof priorities); |
177c0ea7 | 9584 | |
ff563fce KH |
9585 | /* Update `coding-category-list'. */ |
9586 | Vcoding_category_list = Qnil; | |
9587 | for (i = coding_category_max - 1; i >= 0; i--) | |
9588 | Vcoding_category_list | |
9589 | = Fcons (AREF (Vcoding_category_table, priorities[i]), | |
9590 | Vcoding_category_list); | |
6b89e3aa | 9591 | |
df7492f9 | 9592 | return Qnil; |
6b89e3aa KH |
9593 | } |
9594 | ||
df7492f9 KH |
9595 | DEFUN ("coding-system-priority-list", Fcoding_system_priority_list, |
9596 | Scoding_system_priority_list, 0, 1, 0, | |
da7db224 | 9597 | doc: /* Return a list of coding systems ordered by their priorities. |
b811c52b KH |
9598 | The list contains a subset of coding systems; i.e. coding systems |
9599 | assigned to each coding category (see `coding-category-list'). | |
9600 | ||
da7db224 | 9601 | HIGHESTP non-nil means just return the highest priority one. */) |
df7492f9 KH |
9602 | (highestp) |
9603 | Lisp_Object highestp; | |
d46c5b12 KH |
9604 | { |
9605 | int i; | |
df7492f9 | 9606 | Lisp_Object val; |
6b89e3aa | 9607 | |
df7492f9 | 9608 | for (i = 0, val = Qnil; i < coding_category_max; i++) |
d46c5b12 | 9609 | { |
df7492f9 KH |
9610 | enum coding_category category = coding_priorities[i]; |
9611 | int id = coding_categories[category].id; | |
9612 | Lisp_Object attrs; | |
068a9dbd | 9613 | |
df7492f9 KH |
9614 | if (id < 0) |
9615 | continue; | |
9616 | attrs = CODING_ID_ATTRS (id); | |
9617 | if (! NILP (highestp)) | |
9618 | return CODING_ATTR_BASE_NAME (attrs); | |
9619 | val = Fcons (CODING_ATTR_BASE_NAME (attrs), val); | |
9620 | } | |
9621 | return Fnreverse (val); | |
9622 | } | |
068a9dbd | 9623 | |
91433552 | 9624 | static const char *const suffixes[] = { "-unix", "-dos", "-mac" }; |
068a9dbd KH |
9625 | |
9626 | static Lisp_Object | |
df7492f9 KH |
9627 | make_subsidiaries (base) |
9628 | Lisp_Object base; | |
068a9dbd | 9629 | { |
df7492f9 | 9630 | Lisp_Object subsidiaries; |
8f924df7 | 9631 | int base_name_len = SBYTES (SYMBOL_NAME (base)); |
df7492f9 KH |
9632 | char *buf = (char *) alloca (base_name_len + 6); |
9633 | int i; | |
068a9dbd | 9634 | |
8f924df7 | 9635 | bcopy (SDATA (SYMBOL_NAME (base)), buf, base_name_len); |
df7492f9 KH |
9636 | subsidiaries = Fmake_vector (make_number (3), Qnil); |
9637 | for (i = 0; i < 3; i++) | |
068a9dbd | 9638 | { |
df7492f9 KH |
9639 | bcopy (suffixes[i], buf + base_name_len, strlen (suffixes[i]) + 1); |
9640 | ASET (subsidiaries, i, intern (buf)); | |
068a9dbd | 9641 | } |
df7492f9 | 9642 | return subsidiaries; |
068a9dbd KH |
9643 | } |
9644 | ||
9645 | ||
df7492f9 KH |
9646 | DEFUN ("define-coding-system-internal", Fdefine_coding_system_internal, |
9647 | Sdefine_coding_system_internal, coding_arg_max, MANY, 0, | |
1fcd6c8b DL |
9648 | doc: /* For internal use only. |
9649 | usage: (define-coding-system-internal ...) */) | |
df7492f9 KH |
9650 | (nargs, args) |
9651 | int nargs; | |
9652 | Lisp_Object *args; | |
068a9dbd | 9653 | { |
df7492f9 KH |
9654 | Lisp_Object name; |
9655 | Lisp_Object spec_vec; /* [ ATTRS ALIASE EOL_TYPE ] */ | |
9656 | Lisp_Object attrs; /* Vector of attributes. */ | |
9657 | Lisp_Object eol_type; | |
9658 | Lisp_Object aliases; | |
9659 | Lisp_Object coding_type, charset_list, safe_charsets; | |
9660 | enum coding_category category; | |
9661 | Lisp_Object tail, val; | |
9662 | int max_charset_id = 0; | |
9663 | int i; | |
068a9dbd | 9664 | |
df7492f9 KH |
9665 | if (nargs < coding_arg_max) |
9666 | goto short_args; | |
068a9dbd | 9667 | |
df7492f9 | 9668 | attrs = Fmake_vector (make_number (coding_attr_last_index), Qnil); |
068a9dbd | 9669 | |
df7492f9 KH |
9670 | name = args[coding_arg_name]; |
9671 | CHECK_SYMBOL (name); | |
9672 | CODING_ATTR_BASE_NAME (attrs) = name; | |
068a9dbd | 9673 | |
df7492f9 KH |
9674 | val = args[coding_arg_mnemonic]; |
9675 | if (! STRINGP (val)) | |
9676 | CHECK_CHARACTER (val); | |
9677 | CODING_ATTR_MNEMONIC (attrs) = val; | |
068a9dbd | 9678 | |
df7492f9 KH |
9679 | coding_type = args[coding_arg_coding_type]; |
9680 | CHECK_SYMBOL (coding_type); | |
9681 | CODING_ATTR_TYPE (attrs) = coding_type; | |
068a9dbd | 9682 | |
df7492f9 KH |
9683 | charset_list = args[coding_arg_charset_list]; |
9684 | if (SYMBOLP (charset_list)) | |
9685 | { | |
9686 | if (EQ (charset_list, Qiso_2022)) | |
9687 | { | |
9688 | if (! EQ (coding_type, Qiso_2022)) | |
9689 | error ("Invalid charset-list"); | |
9690 | charset_list = Viso_2022_charset_list; | |
9691 | } | |
9692 | else if (EQ (charset_list, Qemacs_mule)) | |
9693 | { | |
9694 | if (! EQ (coding_type, Qemacs_mule)) | |
9695 | error ("Invalid charset-list"); | |
9696 | charset_list = Vemacs_mule_charset_list; | |
9697 | } | |
9698 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
9699 | if (max_charset_id < XFASTINT (XCAR (tail))) | |
9700 | max_charset_id = XFASTINT (XCAR (tail)); | |
9701 | } | |
068a9dbd KH |
9702 | else |
9703 | { | |
df7492f9 | 9704 | charset_list = Fcopy_sequence (charset_list); |
985773c9 | 9705 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) |
068a9dbd | 9706 | { |
df7492f9 KH |
9707 | struct charset *charset; |
9708 | ||
985773c9 | 9709 | val = XCAR (tail); |
df7492f9 KH |
9710 | CHECK_CHARSET_GET_CHARSET (val, charset); |
9711 | if (EQ (coding_type, Qiso_2022) | |
9712 | ? CHARSET_ISO_FINAL (charset) < 0 | |
9713 | : EQ (coding_type, Qemacs_mule) | |
9714 | ? CHARSET_EMACS_MULE_ID (charset) < 0 | |
9715 | : 0) | |
9716 | error ("Can't handle charset `%s'", | |
8f924df7 | 9717 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
df7492f9 | 9718 | |
8f924df7 | 9719 | XSETCAR (tail, make_number (charset->id)); |
df7492f9 KH |
9720 | if (max_charset_id < charset->id) |
9721 | max_charset_id = charset->id; | |
068a9dbd KH |
9722 | } |
9723 | } | |
df7492f9 | 9724 | CODING_ATTR_CHARSET_LIST (attrs) = charset_list; |
068a9dbd | 9725 | |
1b3b981b AS |
9726 | safe_charsets = make_uninit_string (max_charset_id + 1); |
9727 | memset (SDATA (safe_charsets), 255, max_charset_id + 1); | |
df7492f9 | 9728 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) |
8f924df7 | 9729 | SSET (safe_charsets, XFASTINT (XCAR (tail)), 0); |
df7492f9 | 9730 | CODING_ATTR_SAFE_CHARSETS (attrs) = safe_charsets; |
068a9dbd | 9731 | |
584948ac | 9732 | CODING_ATTR_ASCII_COMPAT (attrs) = args[coding_arg_ascii_compatible_p]; |
3a73fa5d | 9733 | |
df7492f9 | 9734 | val = args[coding_arg_decode_translation_table]; |
a6f87d34 | 9735 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) |
7d64c6ad | 9736 | CHECK_SYMBOL (val); |
df7492f9 | 9737 | CODING_ATTR_DECODE_TBL (attrs) = val; |
3a73fa5d | 9738 | |
df7492f9 | 9739 | val = args[coding_arg_encode_translation_table]; |
a6f87d34 | 9740 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) |
7d64c6ad | 9741 | CHECK_SYMBOL (val); |
df7492f9 | 9742 | CODING_ATTR_ENCODE_TBL (attrs) = val; |
d46c5b12 | 9743 | |
df7492f9 KH |
9744 | val = args[coding_arg_post_read_conversion]; |
9745 | CHECK_SYMBOL (val); | |
9746 | CODING_ATTR_POST_READ (attrs) = val; | |
d46c5b12 | 9747 | |
df7492f9 KH |
9748 | val = args[coding_arg_pre_write_conversion]; |
9749 | CHECK_SYMBOL (val); | |
9750 | CODING_ATTR_PRE_WRITE (attrs) = val; | |
3a73fa5d | 9751 | |
df7492f9 KH |
9752 | val = args[coding_arg_default_char]; |
9753 | if (NILP (val)) | |
9754 | CODING_ATTR_DEFAULT_CHAR (attrs) = make_number (' '); | |
9755 | else | |
9756 | { | |
8f924df7 | 9757 | CHECK_CHARACTER (val); |
df7492f9 KH |
9758 | CODING_ATTR_DEFAULT_CHAR (attrs) = val; |
9759 | } | |
4031e2bf | 9760 | |
8f924df7 KH |
9761 | val = args[coding_arg_for_unibyte]; |
9762 | CODING_ATTR_FOR_UNIBYTE (attrs) = NILP (val) ? Qnil : Qt; | |
3a73fa5d | 9763 | |
df7492f9 KH |
9764 | val = args[coding_arg_plist]; |
9765 | CHECK_LIST (val); | |
9766 | CODING_ATTR_PLIST (attrs) = val; | |
3a73fa5d | 9767 | |
df7492f9 KH |
9768 | if (EQ (coding_type, Qcharset)) |
9769 | { | |
c7c66a95 KH |
9770 | /* Generate a lisp vector of 256 elements. Each element is nil, |
9771 | integer, or a list of charset IDs. | |
3a73fa5d | 9772 | |
c7c66a95 KH |
9773 | If Nth element is nil, the byte code N is invalid in this |
9774 | coding system. | |
4ed46869 | 9775 | |
c7c66a95 KH |
9776 | If Nth element is a number NUM, N is the first byte of a |
9777 | charset whose ID is NUM. | |
4ed46869 | 9778 | |
c7c66a95 KH |
9779 | If Nth element is a list of charset IDs, N is the first byte |
9780 | of one of them. The list is sorted by dimensions of the | |
2bc515e4 | 9781 | charsets. A charset of smaller dimension comes firtst. */ |
df7492f9 | 9782 | val = Fmake_vector (make_number (256), Qnil); |
4ed46869 | 9783 | |
5c99c2e6 | 9784 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) |
df7492f9 | 9785 | { |
c7c66a95 KH |
9786 | struct charset *charset = CHARSET_FROM_ID (XFASTINT (XCAR (tail))); |
9787 | int dim = CHARSET_DIMENSION (charset); | |
9788 | int idx = (dim - 1) * 4; | |
4ed46869 | 9789 | |
5c99c2e6 | 9790 | if (CHARSET_ASCII_COMPATIBLE_P (charset)) |
584948ac | 9791 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; |
4031e2bf | 9792 | |
15d143f7 KH |
9793 | for (i = charset->code_space[idx]; |
9794 | i <= charset->code_space[idx + 1]; i++) | |
9795 | { | |
c7c66a95 KH |
9796 | Lisp_Object tmp, tmp2; |
9797 | int dim2; | |
ec6d2bb8 | 9798 | |
c7c66a95 KH |
9799 | tmp = AREF (val, i); |
9800 | if (NILP (tmp)) | |
9801 | tmp = XCAR (tail); | |
9802 | else if (NUMBERP (tmp)) | |
9803 | { | |
9804 | dim2 = CHARSET_DIMENSION (CHARSET_FROM_ID (XFASTINT (tmp))); | |
9805 | if (dim < dim2) | |
c7c66a95 | 9806 | tmp = Fcons (XCAR (tail), Fcons (tmp, Qnil)); |
f9d71dcd KH |
9807 | else |
9808 | tmp = Fcons (tmp, Fcons (XCAR (tail), Qnil)); | |
c7c66a95 | 9809 | } |
15d143f7 | 9810 | else |
c7c66a95 KH |
9811 | { |
9812 | for (tmp2 = tmp; CONSP (tmp2); tmp2 = XCDR (tmp2)) | |
9813 | { | |
9814 | dim2 = CHARSET_DIMENSION (CHARSET_FROM_ID (XFASTINT (XCAR (tmp2)))); | |
9815 | if (dim < dim2) | |
9816 | break; | |
9817 | } | |
9818 | if (NILP (tmp2)) | |
9819 | tmp = nconc2 (tmp, Fcons (XCAR (tail), Qnil)); | |
9820 | else | |
9821 | { | |
9822 | XSETCDR (tmp2, Fcons (XCAR (tmp2), XCDR (tmp2))); | |
9823 | XSETCAR (tmp2, XCAR (tail)); | |
9824 | } | |
9825 | } | |
9826 | ASET (val, i, tmp); | |
15d143f7 | 9827 | } |
df7492f9 KH |
9828 | } |
9829 | ASET (attrs, coding_attr_charset_valids, val); | |
9830 | category = coding_category_charset; | |
9831 | } | |
9832 | else if (EQ (coding_type, Qccl)) | |
9833 | { | |
9834 | Lisp_Object valids; | |
ecec61c1 | 9835 | |
df7492f9 KH |
9836 | if (nargs < coding_arg_ccl_max) |
9837 | goto short_args; | |
ecec61c1 | 9838 | |
df7492f9 KH |
9839 | val = args[coding_arg_ccl_decoder]; |
9840 | CHECK_CCL_PROGRAM (val); | |
9841 | if (VECTORP (val)) | |
9842 | val = Fcopy_sequence (val); | |
9843 | ASET (attrs, coding_attr_ccl_decoder, val); | |
ecec61c1 | 9844 | |
df7492f9 KH |
9845 | val = args[coding_arg_ccl_encoder]; |
9846 | CHECK_CCL_PROGRAM (val); | |
9847 | if (VECTORP (val)) | |
9848 | val = Fcopy_sequence (val); | |
9849 | ASET (attrs, coding_attr_ccl_encoder, val); | |
ecec61c1 | 9850 | |
df7492f9 KH |
9851 | val = args[coding_arg_ccl_valids]; |
9852 | valids = Fmake_string (make_number (256), make_number (0)); | |
9853 | for (tail = val; !NILP (tail); tail = Fcdr (tail)) | |
9854 | { | |
8dcbea82 | 9855 | int from, to; |
ecec61c1 | 9856 | |
df7492f9 KH |
9857 | val = Fcar (tail); |
9858 | if (INTEGERP (val)) | |
8dcbea82 KH |
9859 | { |
9860 | from = to = XINT (val); | |
9861 | if (from < 0 || from > 255) | |
9862 | args_out_of_range_3 (val, make_number (0), make_number (255)); | |
9863 | } | |
df7492f9 KH |
9864 | else |
9865 | { | |
df7492f9 | 9866 | CHECK_CONS (val); |
8f924df7 KH |
9867 | CHECK_NATNUM_CAR (val); |
9868 | CHECK_NATNUM_CDR (val); | |
df7492f9 | 9869 | from = XINT (XCAR (val)); |
8f924df7 | 9870 | if (from > 255) |
8dcbea82 KH |
9871 | args_out_of_range_3 (XCAR (val), |
9872 | make_number (0), make_number (255)); | |
df7492f9 | 9873 | to = XINT (XCDR (val)); |
8dcbea82 KH |
9874 | if (to < from || to > 255) |
9875 | args_out_of_range_3 (XCDR (val), | |
9876 | XCAR (val), make_number (255)); | |
df7492f9 | 9877 | } |
8dcbea82 | 9878 | for (i = from; i <= to; i++) |
8f924df7 | 9879 | SSET (valids, i, 1); |
df7492f9 KH |
9880 | } |
9881 | ASET (attrs, coding_attr_ccl_valids, valids); | |
4ed46869 | 9882 | |
df7492f9 | 9883 | category = coding_category_ccl; |
55ab7be3 | 9884 | } |
df7492f9 | 9885 | else if (EQ (coding_type, Qutf_16)) |
55ab7be3 | 9886 | { |
df7492f9 | 9887 | Lisp_Object bom, endian; |
4ed46869 | 9888 | |
584948ac | 9889 | CODING_ATTR_ASCII_COMPAT (attrs) = Qnil; |
4ed46869 | 9890 | |
df7492f9 KH |
9891 | if (nargs < coding_arg_utf16_max) |
9892 | goto short_args; | |
4ed46869 | 9893 | |
df7492f9 KH |
9894 | bom = args[coding_arg_utf16_bom]; |
9895 | if (! NILP (bom) && ! EQ (bom, Qt)) | |
9896 | { | |
9897 | CHECK_CONS (bom); | |
8f924df7 KH |
9898 | val = XCAR (bom); |
9899 | CHECK_CODING_SYSTEM (val); | |
9900 | val = XCDR (bom); | |
9901 | CHECK_CODING_SYSTEM (val); | |
df7492f9 | 9902 | } |
a470d443 | 9903 | ASET (attrs, coding_attr_utf_bom, bom); |
df7492f9 KH |
9904 | |
9905 | endian = args[coding_arg_utf16_endian]; | |
b49a1807 KH |
9906 | CHECK_SYMBOL (endian); |
9907 | if (NILP (endian)) | |
9908 | endian = Qbig; | |
9909 | else if (! EQ (endian, Qbig) && ! EQ (endian, Qlittle)) | |
8f924df7 | 9910 | error ("Invalid endian: %s", SDATA (SYMBOL_NAME (endian))); |
df7492f9 KH |
9911 | ASET (attrs, coding_attr_utf_16_endian, endian); |
9912 | ||
9913 | category = (CONSP (bom) | |
9914 | ? coding_category_utf_16_auto | |
9915 | : NILP (bom) | |
b49a1807 | 9916 | ? (EQ (endian, Qbig) |
df7492f9 KH |
9917 | ? coding_category_utf_16_be_nosig |
9918 | : coding_category_utf_16_le_nosig) | |
b49a1807 | 9919 | : (EQ (endian, Qbig) |
df7492f9 KH |
9920 | ? coding_category_utf_16_be |
9921 | : coding_category_utf_16_le)); | |
9922 | } | |
9923 | else if (EQ (coding_type, Qiso_2022)) | |
9924 | { | |
9925 | Lisp_Object initial, reg_usage, request, flags; | |
4776e638 | 9926 | int i; |
1397dc18 | 9927 | |
df7492f9 KH |
9928 | if (nargs < coding_arg_iso2022_max) |
9929 | goto short_args; | |
9930 | ||
9931 | initial = Fcopy_sequence (args[coding_arg_iso2022_initial]); | |
9932 | CHECK_VECTOR (initial); | |
9933 | for (i = 0; i < 4; i++) | |
9934 | { | |
9935 | val = Faref (initial, make_number (i)); | |
9936 | if (! NILP (val)) | |
9937 | { | |
584948ac KH |
9938 | struct charset *charset; |
9939 | ||
9940 | CHECK_CHARSET_GET_CHARSET (val, charset); | |
9941 | ASET (initial, i, make_number (CHARSET_ID (charset))); | |
9942 | if (i == 0 && CHARSET_ASCII_COMPATIBLE_P (charset)) | |
9943 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
df7492f9 KH |
9944 | } |
9945 | else | |
9946 | ASET (initial, i, make_number (-1)); | |
9947 | } | |
9948 | ||
9949 | reg_usage = args[coding_arg_iso2022_reg_usage]; | |
9950 | CHECK_CONS (reg_usage); | |
8f924df7 KH |
9951 | CHECK_NUMBER_CAR (reg_usage); |
9952 | CHECK_NUMBER_CDR (reg_usage); | |
df7492f9 KH |
9953 | |
9954 | request = Fcopy_sequence (args[coding_arg_iso2022_request]); | |
9955 | for (tail = request; ! NILP (tail); tail = Fcdr (tail)) | |
1397dc18 | 9956 | { |
df7492f9 | 9957 | int id; |
8f924df7 | 9958 | Lisp_Object tmp; |
df7492f9 KH |
9959 | |
9960 | val = Fcar (tail); | |
9961 | CHECK_CONS (val); | |
8f924df7 KH |
9962 | tmp = XCAR (val); |
9963 | CHECK_CHARSET_GET_ID (tmp, id); | |
9964 | CHECK_NATNUM_CDR (val); | |
df7492f9 KH |
9965 | if (XINT (XCDR (val)) >= 4) |
9966 | error ("Invalid graphic register number: %d", XINT (XCDR (val))); | |
8f924df7 | 9967 | XSETCAR (val, make_number (id)); |
1397dc18 | 9968 | } |
4ed46869 | 9969 | |
df7492f9 KH |
9970 | flags = args[coding_arg_iso2022_flags]; |
9971 | CHECK_NATNUM (flags); | |
9972 | i = XINT (flags); | |
9973 | if (EQ (args[coding_arg_charset_list], Qiso_2022)) | |
9974 | flags = make_number (i | CODING_ISO_FLAG_FULL_SUPPORT); | |
9975 | ||
9976 | ASET (attrs, coding_attr_iso_initial, initial); | |
9977 | ASET (attrs, coding_attr_iso_usage, reg_usage); | |
9978 | ASET (attrs, coding_attr_iso_request, request); | |
9979 | ASET (attrs, coding_attr_iso_flags, flags); | |
9980 | setup_iso_safe_charsets (attrs); | |
9981 | ||
9982 | if (i & CODING_ISO_FLAG_SEVEN_BITS) | |
9983 | category = ((i & (CODING_ISO_FLAG_LOCKING_SHIFT | |
9984 | | CODING_ISO_FLAG_SINGLE_SHIFT)) | |
9985 | ? coding_category_iso_7_else | |
9986 | : EQ (args[coding_arg_charset_list], Qiso_2022) | |
9987 | ? coding_category_iso_7 | |
9988 | : coding_category_iso_7_tight); | |
9989 | else | |
9990 | { | |
9991 | int id = XINT (AREF (initial, 1)); | |
9992 | ||
c6fb6e98 | 9993 | category = (((i & CODING_ISO_FLAG_LOCKING_SHIFT) |
df7492f9 KH |
9994 | || EQ (args[coding_arg_charset_list], Qiso_2022) |
9995 | || id < 0) | |
9996 | ? coding_category_iso_8_else | |
9997 | : (CHARSET_DIMENSION (CHARSET_FROM_ID (id)) == 1) | |
9998 | ? coding_category_iso_8_1 | |
9999 | : coding_category_iso_8_2); | |
10000 | } | |
0ce7886f KH |
10001 | if (category != coding_category_iso_8_1 |
10002 | && category != coding_category_iso_8_2) | |
10003 | CODING_ATTR_ASCII_COMPAT (attrs) = Qnil; | |
df7492f9 KH |
10004 | } |
10005 | else if (EQ (coding_type, Qemacs_mule)) | |
c28a9453 | 10006 | { |
df7492f9 KH |
10007 | if (EQ (args[coding_arg_charset_list], Qemacs_mule)) |
10008 | ASET (attrs, coding_attr_emacs_mule_full, Qt); | |
584948ac | 10009 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; |
df7492f9 | 10010 | category = coding_category_emacs_mule; |
c28a9453 | 10011 | } |
df7492f9 | 10012 | else if (EQ (coding_type, Qshift_jis)) |
c28a9453 | 10013 | { |
df7492f9 KH |
10014 | |
10015 | struct charset *charset; | |
10016 | ||
7d64c6ad | 10017 | if (XINT (Flength (charset_list)) != 3 |
6e07c25f | 10018 | && XINT (Flength (charset_list)) != 4) |
7d64c6ad | 10019 | error ("There should be three or four charsets"); |
df7492f9 KH |
10020 | |
10021 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
10022 | if (CHARSET_DIMENSION (charset) != 1) | |
10023 | error ("Dimension of charset %s is not one", | |
8f924df7 | 10024 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
584948ac KH |
10025 | if (CHARSET_ASCII_COMPATIBLE_P (charset)) |
10026 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
df7492f9 KH |
10027 | |
10028 | charset_list = XCDR (charset_list); | |
10029 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
10030 | if (CHARSET_DIMENSION (charset) != 1) | |
10031 | error ("Dimension of charset %s is not one", | |
8f924df7 | 10032 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
df7492f9 KH |
10033 | |
10034 | charset_list = XCDR (charset_list); | |
10035 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
10036 | if (CHARSET_DIMENSION (charset) != 2) | |
7d64c6ad KH |
10037 | error ("Dimension of charset %s is not two", |
10038 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); | |
10039 | ||
10040 | charset_list = XCDR (charset_list); | |
2b917a06 KH |
10041 | if (! NILP (charset_list)) |
10042 | { | |
10043 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
10044 | if (CHARSET_DIMENSION (charset) != 2) | |
10045 | error ("Dimension of charset %s is not two", | |
10046 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); | |
10047 | } | |
df7492f9 KH |
10048 | |
10049 | category = coding_category_sjis; | |
10050 | Vsjis_coding_system = name; | |
c28a9453 | 10051 | } |
df7492f9 KH |
10052 | else if (EQ (coding_type, Qbig5)) |
10053 | { | |
10054 | struct charset *charset; | |
4ed46869 | 10055 | |
df7492f9 KH |
10056 | if (XINT (Flength (charset_list)) != 2) |
10057 | error ("There should be just two charsets"); | |
10058 | ||
10059 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
10060 | if (CHARSET_DIMENSION (charset) != 1) | |
10061 | error ("Dimension of charset %s is not one", | |
8f924df7 | 10062 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
584948ac KH |
10063 | if (CHARSET_ASCII_COMPATIBLE_P (charset)) |
10064 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
df7492f9 KH |
10065 | |
10066 | charset_list = XCDR (charset_list); | |
10067 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
10068 | if (CHARSET_DIMENSION (charset) != 2) | |
10069 | error ("Dimension of charset %s is not two", | |
8f924df7 | 10070 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
4ed46869 | 10071 | |
df7492f9 KH |
10072 | category = coding_category_big5; |
10073 | Vbig5_coding_system = name; | |
10074 | } | |
10075 | else if (EQ (coding_type, Qraw_text)) | |
c28a9453 | 10076 | { |
584948ac KH |
10077 | category = coding_category_raw_text; |
10078 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
c28a9453 | 10079 | } |
df7492f9 | 10080 | else if (EQ (coding_type, Qutf_8)) |
4ed46869 | 10081 | { |
a470d443 KH |
10082 | Lisp_Object bom; |
10083 | ||
584948ac | 10084 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; |
a470d443 KH |
10085 | |
10086 | if (nargs < coding_arg_utf8_max) | |
10087 | goto short_args; | |
10088 | ||
10089 | bom = args[coding_arg_utf8_bom]; | |
10090 | if (! NILP (bom) && ! EQ (bom, Qt)) | |
10091 | { | |
10092 | CHECK_CONS (bom); | |
10093 | val = XCAR (bom); | |
10094 | CHECK_CODING_SYSTEM (val); | |
10095 | val = XCDR (bom); | |
10096 | CHECK_CODING_SYSTEM (val); | |
10097 | } | |
10098 | ASET (attrs, coding_attr_utf_bom, bom); | |
10099 | ||
10100 | category = (CONSP (bom) ? coding_category_utf_8_auto | |
10101 | : NILP (bom) ? coding_category_utf_8_nosig | |
10102 | : coding_category_utf_8_sig); | |
4ed46869 | 10103 | } |
df7492f9 KH |
10104 | else if (EQ (coding_type, Qundecided)) |
10105 | category = coding_category_undecided; | |
4ed46869 | 10106 | else |
df7492f9 | 10107 | error ("Invalid coding system type: %s", |
8f924df7 | 10108 | SDATA (SYMBOL_NAME (coding_type))); |
4ed46869 | 10109 | |
df7492f9 | 10110 | CODING_ATTR_CATEGORY (attrs) = make_number (category); |
01378f49 KH |
10111 | CODING_ATTR_PLIST (attrs) |
10112 | = Fcons (QCcategory, Fcons (AREF (Vcoding_category_table, category), | |
10113 | CODING_ATTR_PLIST (attrs))); | |
35befdaa | 10114 | CODING_ATTR_PLIST (attrs) |
3ed051d4 | 10115 | = Fcons (QCascii_compatible_p, |
35befdaa KH |
10116 | Fcons (CODING_ATTR_ASCII_COMPAT (attrs), |
10117 | CODING_ATTR_PLIST (attrs))); | |
c4825358 | 10118 | |
df7492f9 KH |
10119 | eol_type = args[coding_arg_eol_type]; |
10120 | if (! NILP (eol_type) | |
10121 | && ! EQ (eol_type, Qunix) | |
10122 | && ! EQ (eol_type, Qdos) | |
10123 | && ! EQ (eol_type, Qmac)) | |
10124 | error ("Invalid eol-type"); | |
4ed46869 | 10125 | |
df7492f9 | 10126 | aliases = Fcons (name, Qnil); |
4ed46869 | 10127 | |
df7492f9 KH |
10128 | if (NILP (eol_type)) |
10129 | { | |
10130 | eol_type = make_subsidiaries (name); | |
10131 | for (i = 0; i < 3; i++) | |
1397dc18 | 10132 | { |
df7492f9 KH |
10133 | Lisp_Object this_spec, this_name, this_aliases, this_eol_type; |
10134 | ||
10135 | this_name = AREF (eol_type, i); | |
10136 | this_aliases = Fcons (this_name, Qnil); | |
10137 | this_eol_type = (i == 0 ? Qunix : i == 1 ? Qdos : Qmac); | |
10138 | this_spec = Fmake_vector (make_number (3), attrs); | |
10139 | ASET (this_spec, 1, this_aliases); | |
10140 | ASET (this_spec, 2, this_eol_type); | |
10141 | Fputhash (this_name, this_spec, Vcoding_system_hash_table); | |
10142 | Vcoding_system_list = Fcons (this_name, Vcoding_system_list); | |
583f71ca KH |
10143 | val = Fassoc (Fsymbol_name (this_name), Vcoding_system_alist); |
10144 | if (NILP (val)) | |
10145 | Vcoding_system_alist | |
10146 | = Fcons (Fcons (Fsymbol_name (this_name), Qnil), | |
10147 | Vcoding_system_alist); | |
1397dc18 | 10148 | } |
d46c5b12 | 10149 | } |
4ed46869 | 10150 | |
df7492f9 KH |
10151 | spec_vec = Fmake_vector (make_number (3), attrs); |
10152 | ASET (spec_vec, 1, aliases); | |
10153 | ASET (spec_vec, 2, eol_type); | |
48b0f3ae | 10154 | |
df7492f9 KH |
10155 | Fputhash (name, spec_vec, Vcoding_system_hash_table); |
10156 | Vcoding_system_list = Fcons (name, Vcoding_system_list); | |
583f71ca KH |
10157 | val = Fassoc (Fsymbol_name (name), Vcoding_system_alist); |
10158 | if (NILP (val)) | |
10159 | Vcoding_system_alist = Fcons (Fcons (Fsymbol_name (name), Qnil), | |
10160 | Vcoding_system_alist); | |
48b0f3ae | 10161 | |
df7492f9 KH |
10162 | { |
10163 | int id = coding_categories[category].id; | |
48b0f3ae | 10164 | |
df7492f9 KH |
10165 | if (id < 0 || EQ (name, CODING_ID_NAME (id))) |
10166 | setup_coding_system (name, &coding_categories[category]); | |
10167 | } | |
48b0f3ae | 10168 | |
d46c5b12 | 10169 | return Qnil; |
48b0f3ae | 10170 | |
df7492f9 KH |
10171 | short_args: |
10172 | return Fsignal (Qwrong_number_of_arguments, | |
10173 | Fcons (intern ("define-coding-system-internal"), | |
10174 | make_number (nargs))); | |
d46c5b12 | 10175 | } |
4ed46869 | 10176 | |
d6925f38 | 10177 | |
a6f87d34 KH |
10178 | DEFUN ("coding-system-put", Fcoding_system_put, Scoding_system_put, |
10179 | 3, 3, 0, | |
10180 | doc: /* Change value in CODING-SYSTEM's property list PROP to VAL. */) | |
10181 | (coding_system, prop, val) | |
10182 | Lisp_Object coding_system, prop, val; | |
10183 | { | |
3dbe7859 | 10184 | Lisp_Object spec, attrs; |
a6f87d34 KH |
10185 | |
10186 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
10187 | attrs = AREF (spec, 0); | |
10188 | if (EQ (prop, QCmnemonic)) | |
10189 | { | |
10190 | if (! STRINGP (val)) | |
10191 | CHECK_CHARACTER (val); | |
10192 | CODING_ATTR_MNEMONIC (attrs) = val; | |
10193 | } | |
2133e2d1 | 10194 | else if (EQ (prop, QCdefault_char)) |
a6f87d34 KH |
10195 | { |
10196 | if (NILP (val)) | |
10197 | val = make_number (' '); | |
10198 | else | |
10199 | CHECK_CHARACTER (val); | |
10200 | CODING_ATTR_DEFAULT_CHAR (attrs) = val; | |
10201 | } | |
10202 | else if (EQ (prop, QCdecode_translation_table)) | |
10203 | { | |
10204 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) | |
10205 | CHECK_SYMBOL (val); | |
10206 | CODING_ATTR_DECODE_TBL (attrs) = val; | |
10207 | } | |
10208 | else if (EQ (prop, QCencode_translation_table)) | |
10209 | { | |
10210 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) | |
10211 | CHECK_SYMBOL (val); | |
10212 | CODING_ATTR_ENCODE_TBL (attrs) = val; | |
10213 | } | |
10214 | else if (EQ (prop, QCpost_read_conversion)) | |
10215 | { | |
10216 | CHECK_SYMBOL (val); | |
10217 | CODING_ATTR_POST_READ (attrs) = val; | |
10218 | } | |
10219 | else if (EQ (prop, QCpre_write_conversion)) | |
10220 | { | |
10221 | CHECK_SYMBOL (val); | |
10222 | CODING_ATTR_PRE_WRITE (attrs) = val; | |
10223 | } | |
35befdaa KH |
10224 | else if (EQ (prop, QCascii_compatible_p)) |
10225 | { | |
10226 | CODING_ATTR_ASCII_COMPAT (attrs) = val; | |
10227 | } | |
a6f87d34 KH |
10228 | |
10229 | CODING_ATTR_PLIST (attrs) | |
10230 | = Fplist_put (CODING_ATTR_PLIST (attrs), prop, val); | |
10231 | return val; | |
10232 | } | |
10233 | ||
10234 | ||
df7492f9 KH |
10235 | DEFUN ("define-coding-system-alias", Fdefine_coding_system_alias, |
10236 | Sdefine_coding_system_alias, 2, 2, 0, | |
10237 | doc: /* Define ALIAS as an alias for CODING-SYSTEM. */) | |
10238 | (alias, coding_system) | |
10239 | Lisp_Object alias, coding_system; | |
66cfb530 | 10240 | { |
583f71ca | 10241 | Lisp_Object spec, aliases, eol_type, val; |
4ed46869 | 10242 | |
df7492f9 KH |
10243 | CHECK_SYMBOL (alias); |
10244 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
10245 | aliases = AREF (spec, 1); | |
d4a1d553 | 10246 | /* ALIASES should be a list of length more than zero, and the first |
d6925f38 KH |
10247 | element is a base coding system. Append ALIAS at the tail of the |
10248 | list. */ | |
df7492f9 KH |
10249 | while (!NILP (XCDR (aliases))) |
10250 | aliases = XCDR (aliases); | |
8f924df7 | 10251 | XSETCDR (aliases, Fcons (alias, Qnil)); |
4ed46869 | 10252 | |
df7492f9 KH |
10253 | eol_type = AREF (spec, 2); |
10254 | if (VECTORP (eol_type)) | |
4ed46869 | 10255 | { |
df7492f9 KH |
10256 | Lisp_Object subsidiaries; |
10257 | int i; | |
4ed46869 | 10258 | |
df7492f9 KH |
10259 | subsidiaries = make_subsidiaries (alias); |
10260 | for (i = 0; i < 3; i++) | |
10261 | Fdefine_coding_system_alias (AREF (subsidiaries, i), | |
10262 | AREF (eol_type, i)); | |
4ed46869 | 10263 | } |
df7492f9 KH |
10264 | |
10265 | Fputhash (alias, spec, Vcoding_system_hash_table); | |
d6925f38 | 10266 | Vcoding_system_list = Fcons (alias, Vcoding_system_list); |
583f71ca KH |
10267 | val = Fassoc (Fsymbol_name (alias), Vcoding_system_alist); |
10268 | if (NILP (val)) | |
10269 | Vcoding_system_alist = Fcons (Fcons (Fsymbol_name (alias), Qnil), | |
10270 | Vcoding_system_alist); | |
66cfb530 | 10271 | |
4ed46869 KH |
10272 | return Qnil; |
10273 | } | |
10274 | ||
df7492f9 KH |
10275 | DEFUN ("coding-system-base", Fcoding_system_base, Scoding_system_base, |
10276 | 1, 1, 0, | |
10277 | doc: /* Return the base of CODING-SYSTEM. | |
da7db224 | 10278 | Any alias or subsidiary coding system is not a base coding system. */) |
df7492f9 KH |
10279 | (coding_system) |
10280 | Lisp_Object coding_system; | |
d46c5b12 | 10281 | { |
df7492f9 | 10282 | Lisp_Object spec, attrs; |
d46c5b12 | 10283 | |
df7492f9 KH |
10284 | if (NILP (coding_system)) |
10285 | return (Qno_conversion); | |
10286 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
10287 | attrs = AREF (spec, 0); | |
10288 | return CODING_ATTR_BASE_NAME (attrs); | |
10289 | } | |
1397dc18 | 10290 | |
df7492f9 KH |
10291 | DEFUN ("coding-system-plist", Fcoding_system_plist, Scoding_system_plist, |
10292 | 1, 1, 0, | |
10293 | doc: "Return the property list of CODING-SYSTEM.") | |
10294 | (coding_system) | |
10295 | Lisp_Object coding_system; | |
10296 | { | |
10297 | Lisp_Object spec, attrs; | |
1397dc18 | 10298 | |
df7492f9 KH |
10299 | if (NILP (coding_system)) |
10300 | coding_system = Qno_conversion; | |
10301 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
10302 | attrs = AREF (spec, 0); | |
10303 | return CODING_ATTR_PLIST (attrs); | |
d46c5b12 KH |
10304 | } |
10305 | ||
df7492f9 KH |
10306 | |
10307 | DEFUN ("coding-system-aliases", Fcoding_system_aliases, Scoding_system_aliases, | |
10308 | 1, 1, 0, | |
da7db224 | 10309 | doc: /* Return the list of aliases of CODING-SYSTEM. */) |
df7492f9 KH |
10310 | (coding_system) |
10311 | Lisp_Object coding_system; | |
66cfb530 | 10312 | { |
df7492f9 | 10313 | Lisp_Object spec; |
84d60297 | 10314 | |
df7492f9 KH |
10315 | if (NILP (coding_system)) |
10316 | coding_system = Qno_conversion; | |
10317 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
da7db224 | 10318 | return AREF (spec, 1); |
df7492f9 | 10319 | } |
66cfb530 | 10320 | |
df7492f9 KH |
10321 | DEFUN ("coding-system-eol-type", Fcoding_system_eol_type, |
10322 | Scoding_system_eol_type, 1, 1, 0, | |
10323 | doc: /* Return eol-type of CODING-SYSTEM. | |
d4a1d553 | 10324 | An eol-type is an integer 0, 1, 2, or a vector of coding systems. |
66cfb530 | 10325 | |
df7492f9 KH |
10326 | Integer values 0, 1, and 2 indicate a format of end-of-line; LF, CRLF, |
10327 | and CR respectively. | |
66cfb530 | 10328 | |
df7492f9 KH |
10329 | A vector value indicates that a format of end-of-line should be |
10330 | detected automatically. Nth element of the vector is the subsidiary | |
10331 | coding system whose eol-type is N. */) | |
6b89e3aa KH |
10332 | (coding_system) |
10333 | Lisp_Object coding_system; | |
10334 | { | |
df7492f9 KH |
10335 | Lisp_Object spec, eol_type; |
10336 | int n; | |
6b89e3aa | 10337 | |
df7492f9 KH |
10338 | if (NILP (coding_system)) |
10339 | coding_system = Qno_conversion; | |
10340 | if (! CODING_SYSTEM_P (coding_system)) | |
10341 | return Qnil; | |
10342 | spec = CODING_SYSTEM_SPEC (coding_system); | |
10343 | eol_type = AREF (spec, 2); | |
10344 | if (VECTORP (eol_type)) | |
10345 | return Fcopy_sequence (eol_type); | |
10346 | n = EQ (eol_type, Qunix) ? 0 : EQ (eol_type, Qdos) ? 1 : 2; | |
10347 | return make_number (n); | |
6b89e3aa KH |
10348 | } |
10349 | ||
4ed46869 KH |
10350 | #endif /* emacs */ |
10351 | ||
10352 | \f | |
1397dc18 | 10353 | /*** 9. Post-amble ***/ |
4ed46869 | 10354 | |
dfcf069d | 10355 | void |
4ed46869 KH |
10356 | init_coding_once () |
10357 | { | |
10358 | int i; | |
10359 | ||
df7492f9 KH |
10360 | for (i = 0; i < coding_category_max; i++) |
10361 | { | |
10362 | coding_categories[i].id = -1; | |
10363 | coding_priorities[i] = i; | |
10364 | } | |
4ed46869 KH |
10365 | |
10366 | /* ISO2022 specific initialize routine. */ | |
10367 | for (i = 0; i < 0x20; i++) | |
b73bfc1c | 10368 | iso_code_class[i] = ISO_control_0; |
4ed46869 KH |
10369 | for (i = 0x21; i < 0x7F; i++) |
10370 | iso_code_class[i] = ISO_graphic_plane_0; | |
10371 | for (i = 0x80; i < 0xA0; i++) | |
b73bfc1c | 10372 | iso_code_class[i] = ISO_control_1; |
4ed46869 KH |
10373 | for (i = 0xA1; i < 0xFF; i++) |
10374 | iso_code_class[i] = ISO_graphic_plane_1; | |
10375 | iso_code_class[0x20] = iso_code_class[0x7F] = ISO_0x20_or_0x7F; | |
10376 | iso_code_class[0xA0] = iso_code_class[0xFF] = ISO_0xA0_or_0xFF; | |
4ed46869 KH |
10377 | iso_code_class[ISO_CODE_SO] = ISO_shift_out; |
10378 | iso_code_class[ISO_CODE_SI] = ISO_shift_in; | |
10379 | iso_code_class[ISO_CODE_SS2_7] = ISO_single_shift_2_7; | |
10380 | iso_code_class[ISO_CODE_ESC] = ISO_escape; | |
10381 | iso_code_class[ISO_CODE_SS2] = ISO_single_shift_2; | |
10382 | iso_code_class[ISO_CODE_SS3] = ISO_single_shift_3; | |
10383 | iso_code_class[ISO_CODE_CSI] = ISO_control_sequence_introducer; | |
10384 | ||
df7492f9 KH |
10385 | for (i = 0; i < 256; i++) |
10386 | { | |
10387 | emacs_mule_bytes[i] = 1; | |
10388 | } | |
7c78e542 KH |
10389 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_11] = 3; |
10390 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_12] = 3; | |
10391 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_21] = 4; | |
10392 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_22] = 4; | |
e0e989f6 KH |
10393 | } |
10394 | ||
10395 | #ifdef emacs | |
10396 | ||
dfcf069d | 10397 | void |
e0e989f6 KH |
10398 | syms_of_coding () |
10399 | { | |
df7492f9 | 10400 | staticpro (&Vcoding_system_hash_table); |
8f924df7 KH |
10401 | { |
10402 | Lisp_Object args[2]; | |
10403 | args[0] = QCtest; | |
10404 | args[1] = Qeq; | |
10405 | Vcoding_system_hash_table = Fmake_hash_table (2, args); | |
10406 | } | |
df7492f9 KH |
10407 | |
10408 | staticpro (&Vsjis_coding_system); | |
10409 | Vsjis_coding_system = Qnil; | |
e0e989f6 | 10410 | |
df7492f9 KH |
10411 | staticpro (&Vbig5_coding_system); |
10412 | Vbig5_coding_system = Qnil; | |
10413 | ||
24a73b0a KH |
10414 | staticpro (&Vcode_conversion_reused_workbuf); |
10415 | Vcode_conversion_reused_workbuf = Qnil; | |
10416 | ||
10417 | staticpro (&Vcode_conversion_workbuf_name); | |
d67b4f80 | 10418 | Vcode_conversion_workbuf_name = make_pure_c_string (" *code-conversion-work*"); |
e0e989f6 | 10419 | |
24a73b0a | 10420 | reused_workbuf_in_use = 0; |
df7492f9 KH |
10421 | |
10422 | DEFSYM (Qcharset, "charset"); | |
10423 | DEFSYM (Qtarget_idx, "target-idx"); | |
10424 | DEFSYM (Qcoding_system_history, "coding-system-history"); | |
bb0115a2 RS |
10425 | Fset (Qcoding_system_history, Qnil); |
10426 | ||
9ce27fde | 10427 | /* Target FILENAME is the first argument. */ |
e0e989f6 | 10428 | Fput (Qinsert_file_contents, Qtarget_idx, make_number (0)); |
9ce27fde | 10429 | /* Target FILENAME is the third argument. */ |
e0e989f6 KH |
10430 | Fput (Qwrite_region, Qtarget_idx, make_number (2)); |
10431 | ||
df7492f9 | 10432 | DEFSYM (Qcall_process, "call-process"); |
9ce27fde | 10433 | /* Target PROGRAM is the first argument. */ |
e0e989f6 KH |
10434 | Fput (Qcall_process, Qtarget_idx, make_number (0)); |
10435 | ||
df7492f9 | 10436 | DEFSYM (Qcall_process_region, "call-process-region"); |
9ce27fde | 10437 | /* Target PROGRAM is the third argument. */ |
e0e989f6 KH |
10438 | Fput (Qcall_process_region, Qtarget_idx, make_number (2)); |
10439 | ||
df7492f9 | 10440 | DEFSYM (Qstart_process, "start-process"); |
9ce27fde | 10441 | /* Target PROGRAM is the third argument. */ |
e0e989f6 KH |
10442 | Fput (Qstart_process, Qtarget_idx, make_number (2)); |
10443 | ||
df7492f9 | 10444 | DEFSYM (Qopen_network_stream, "open-network-stream"); |
9ce27fde | 10445 | /* Target SERVICE is the fourth argument. */ |
e0e989f6 KH |
10446 | Fput (Qopen_network_stream, Qtarget_idx, make_number (3)); |
10447 | ||
df7492f9 KH |
10448 | DEFSYM (Qcoding_system, "coding-system"); |
10449 | DEFSYM (Qcoding_aliases, "coding-aliases"); | |
4ed46869 | 10450 | |
df7492f9 KH |
10451 | DEFSYM (Qeol_type, "eol-type"); |
10452 | DEFSYM (Qunix, "unix"); | |
10453 | DEFSYM (Qdos, "dos"); | |
4ed46869 | 10454 | |
df7492f9 KH |
10455 | DEFSYM (Qbuffer_file_coding_system, "buffer-file-coding-system"); |
10456 | DEFSYM (Qpost_read_conversion, "post-read-conversion"); | |
10457 | DEFSYM (Qpre_write_conversion, "pre-write-conversion"); | |
10458 | DEFSYM (Qdefault_char, "default-char"); | |
10459 | DEFSYM (Qundecided, "undecided"); | |
10460 | DEFSYM (Qno_conversion, "no-conversion"); | |
10461 | DEFSYM (Qraw_text, "raw-text"); | |
4ed46869 | 10462 | |
df7492f9 | 10463 | DEFSYM (Qiso_2022, "iso-2022"); |
4ed46869 | 10464 | |
df7492f9 | 10465 | DEFSYM (Qutf_8, "utf-8"); |
8f924df7 | 10466 | DEFSYM (Qutf_8_emacs, "utf-8-emacs"); |
27901516 | 10467 | |
df7492f9 | 10468 | DEFSYM (Qutf_16, "utf-16"); |
df7492f9 KH |
10469 | DEFSYM (Qbig, "big"); |
10470 | DEFSYM (Qlittle, "little"); | |
27901516 | 10471 | |
df7492f9 KH |
10472 | DEFSYM (Qshift_jis, "shift-jis"); |
10473 | DEFSYM (Qbig5, "big5"); | |
4ed46869 | 10474 | |
df7492f9 | 10475 | DEFSYM (Qcoding_system_p, "coding-system-p"); |
4ed46869 | 10476 | |
df7492f9 | 10477 | DEFSYM (Qcoding_system_error, "coding-system-error"); |
4ed46869 | 10478 | Fput (Qcoding_system_error, Qerror_conditions, |
d67b4f80 | 10479 | pure_cons (Qcoding_system_error, pure_cons (Qerror, Qnil))); |
4ed46869 | 10480 | Fput (Qcoding_system_error, Qerror_message, |
d67b4f80 | 10481 | make_pure_c_string ("Invalid coding system")); |
4ed46869 | 10482 | |
05e6f5dc KH |
10483 | /* Intern this now in case it isn't already done. |
10484 | Setting this variable twice is harmless. | |
10485 | But don't staticpro it here--that is done in alloc.c. */ | |
d67b4f80 | 10486 | Qchar_table_extra_slots = intern_c_string ("char-table-extra-slots"); |
70c22245 | 10487 | |
df7492f9 | 10488 | DEFSYM (Qtranslation_table, "translation-table"); |
433f7f87 | 10489 | Fput (Qtranslation_table, Qchar_table_extra_slots, make_number (2)); |
df7492f9 KH |
10490 | DEFSYM (Qtranslation_table_id, "translation-table-id"); |
10491 | DEFSYM (Qtranslation_table_for_decode, "translation-table-for-decode"); | |
10492 | DEFSYM (Qtranslation_table_for_encode, "translation-table-for-encode"); | |
1397dc18 | 10493 | |
df7492f9 | 10494 | DEFSYM (Qvalid_codes, "valid-codes"); |
9ce27fde | 10495 | |
df7492f9 | 10496 | DEFSYM (Qemacs_mule, "emacs-mule"); |
d46c5b12 | 10497 | |
01378f49 | 10498 | DEFSYM (QCcategory, ":category"); |
a6f87d34 | 10499 | DEFSYM (QCmnemonic, ":mnemonic"); |
2133e2d1 | 10500 | DEFSYM (QCdefault_char, ":default-char"); |
a6f87d34 KH |
10501 | DEFSYM (QCdecode_translation_table, ":decode-translation-table"); |
10502 | DEFSYM (QCencode_translation_table, ":encode-translation-table"); | |
10503 | DEFSYM (QCpost_read_conversion, ":post-read-conversion"); | |
10504 | DEFSYM (QCpre_write_conversion, ":pre-write-conversion"); | |
35befdaa | 10505 | DEFSYM (QCascii_compatible_p, ":ascii-compatible-p"); |
01378f49 | 10506 | |
df7492f9 KH |
10507 | Vcoding_category_table |
10508 | = Fmake_vector (make_number (coding_category_max), Qnil); | |
10509 | staticpro (&Vcoding_category_table); | |
10510 | /* Followings are target of code detection. */ | |
10511 | ASET (Vcoding_category_table, coding_category_iso_7, | |
d67b4f80 | 10512 | intern_c_string ("coding-category-iso-7")); |
df7492f9 | 10513 | ASET (Vcoding_category_table, coding_category_iso_7_tight, |
d67b4f80 | 10514 | intern_c_string ("coding-category-iso-7-tight")); |
df7492f9 | 10515 | ASET (Vcoding_category_table, coding_category_iso_8_1, |
d67b4f80 | 10516 | intern_c_string ("coding-category-iso-8-1")); |
df7492f9 | 10517 | ASET (Vcoding_category_table, coding_category_iso_8_2, |
d67b4f80 | 10518 | intern_c_string ("coding-category-iso-8-2")); |
df7492f9 | 10519 | ASET (Vcoding_category_table, coding_category_iso_7_else, |
d67b4f80 | 10520 | intern_c_string ("coding-category-iso-7-else")); |
df7492f9 | 10521 | ASET (Vcoding_category_table, coding_category_iso_8_else, |
d67b4f80 | 10522 | intern_c_string ("coding-category-iso-8-else")); |
a470d443 | 10523 | ASET (Vcoding_category_table, coding_category_utf_8_auto, |
d67b4f80 | 10524 | intern_c_string ("coding-category-utf-8-auto")); |
a470d443 | 10525 | ASET (Vcoding_category_table, coding_category_utf_8_nosig, |
d67b4f80 | 10526 | intern_c_string ("coding-category-utf-8")); |
a470d443 | 10527 | ASET (Vcoding_category_table, coding_category_utf_8_sig, |
d67b4f80 | 10528 | intern_c_string ("coding-category-utf-8-sig")); |
df7492f9 | 10529 | ASET (Vcoding_category_table, coding_category_utf_16_be, |
d67b4f80 | 10530 | intern_c_string ("coding-category-utf-16-be")); |
ff563fce | 10531 | ASET (Vcoding_category_table, coding_category_utf_16_auto, |
d67b4f80 | 10532 | intern_c_string ("coding-category-utf-16-auto")); |
df7492f9 | 10533 | ASET (Vcoding_category_table, coding_category_utf_16_le, |
d67b4f80 | 10534 | intern_c_string ("coding-category-utf-16-le")); |
df7492f9 | 10535 | ASET (Vcoding_category_table, coding_category_utf_16_be_nosig, |
d67b4f80 | 10536 | intern_c_string ("coding-category-utf-16-be-nosig")); |
df7492f9 | 10537 | ASET (Vcoding_category_table, coding_category_utf_16_le_nosig, |
d67b4f80 | 10538 | intern_c_string ("coding-category-utf-16-le-nosig")); |
df7492f9 | 10539 | ASET (Vcoding_category_table, coding_category_charset, |
d67b4f80 | 10540 | intern_c_string ("coding-category-charset")); |
df7492f9 | 10541 | ASET (Vcoding_category_table, coding_category_sjis, |
d67b4f80 | 10542 | intern_c_string ("coding-category-sjis")); |
df7492f9 | 10543 | ASET (Vcoding_category_table, coding_category_big5, |
d67b4f80 | 10544 | intern_c_string ("coding-category-big5")); |
df7492f9 | 10545 | ASET (Vcoding_category_table, coding_category_ccl, |
d67b4f80 | 10546 | intern_c_string ("coding-category-ccl")); |
df7492f9 | 10547 | ASET (Vcoding_category_table, coding_category_emacs_mule, |
d67b4f80 | 10548 | intern_c_string ("coding-category-emacs-mule")); |
df7492f9 KH |
10549 | /* Followings are NOT target of code detection. */ |
10550 | ASET (Vcoding_category_table, coding_category_raw_text, | |
d67b4f80 | 10551 | intern_c_string ("coding-category-raw-text")); |
df7492f9 | 10552 | ASET (Vcoding_category_table, coding_category_undecided, |
d67b4f80 | 10553 | intern_c_string ("coding-category-undecided")); |
ecf488bc | 10554 | |
065e3595 KH |
10555 | DEFSYM (Qinsufficient_source, "insufficient-source"); |
10556 | DEFSYM (Qinconsistent_eol, "inconsistent-eol"); | |
10557 | DEFSYM (Qinvalid_source, "invalid-source"); | |
10558 | DEFSYM (Qinterrupted, "interrupted"); | |
10559 | DEFSYM (Qinsufficient_memory, "insufficient-memory"); | |
44e8490d | 10560 | DEFSYM (Qcoding_system_define_form, "coding-system-define-form"); |
065e3595 | 10561 | |
4ed46869 KH |
10562 | defsubr (&Scoding_system_p); |
10563 | defsubr (&Sread_coding_system); | |
10564 | defsubr (&Sread_non_nil_coding_system); | |
10565 | defsubr (&Scheck_coding_system); | |
10566 | defsubr (&Sdetect_coding_region); | |
d46c5b12 | 10567 | defsubr (&Sdetect_coding_string); |
05e6f5dc | 10568 | defsubr (&Sfind_coding_systems_region_internal); |
068a9dbd | 10569 | defsubr (&Sunencodable_char_position); |
df7492f9 | 10570 | defsubr (&Scheck_coding_systems_region); |
4ed46869 KH |
10571 | defsubr (&Sdecode_coding_region); |
10572 | defsubr (&Sencode_coding_region); | |
10573 | defsubr (&Sdecode_coding_string); | |
10574 | defsubr (&Sencode_coding_string); | |
10575 | defsubr (&Sdecode_sjis_char); | |
10576 | defsubr (&Sencode_sjis_char); | |
10577 | defsubr (&Sdecode_big5_char); | |
10578 | defsubr (&Sencode_big5_char); | |
1ba9e4ab | 10579 | defsubr (&Sset_terminal_coding_system_internal); |
c4825358 | 10580 | defsubr (&Sset_safe_terminal_coding_system_internal); |
4ed46869 | 10581 | defsubr (&Sterminal_coding_system); |
1ba9e4ab | 10582 | defsubr (&Sset_keyboard_coding_system_internal); |
4ed46869 | 10583 | defsubr (&Skeyboard_coding_system); |
a5d301df | 10584 | defsubr (&Sfind_operation_coding_system); |
df7492f9 | 10585 | defsubr (&Sset_coding_system_priority); |
6b89e3aa | 10586 | defsubr (&Sdefine_coding_system_internal); |
df7492f9 | 10587 | defsubr (&Sdefine_coding_system_alias); |
a6f87d34 | 10588 | defsubr (&Scoding_system_put); |
df7492f9 KH |
10589 | defsubr (&Scoding_system_base); |
10590 | defsubr (&Scoding_system_plist); | |
10591 | defsubr (&Scoding_system_aliases); | |
10592 | defsubr (&Scoding_system_eol_type); | |
10593 | defsubr (&Scoding_system_priority_list); | |
4ed46869 | 10594 | |
4608c386 | 10595 | DEFVAR_LISP ("coding-system-list", &Vcoding_system_list, |
48b0f3ae PJ |
10596 | doc: /* List of coding systems. |
10597 | ||
10598 | Do not alter the value of this variable manually. This variable should be | |
df7492f9 | 10599 | updated by the functions `define-coding-system' and |
48b0f3ae | 10600 | `define-coding-system-alias'. */); |
4608c386 KH |
10601 | Vcoding_system_list = Qnil; |
10602 | ||
10603 | DEFVAR_LISP ("coding-system-alist", &Vcoding_system_alist, | |
48b0f3ae PJ |
10604 | doc: /* Alist of coding system names. |
10605 | Each element is one element list of coding system name. | |
446dcd75 | 10606 | This variable is given to `completing-read' as COLLECTION argument. |
48b0f3ae PJ |
10607 | |
10608 | Do not alter the value of this variable manually. This variable should be | |
10609 | updated by the functions `make-coding-system' and | |
10610 | `define-coding-system-alias'. */); | |
4608c386 KH |
10611 | Vcoding_system_alist = Qnil; |
10612 | ||
4ed46869 | 10613 | DEFVAR_LISP ("coding-category-list", &Vcoding_category_list, |
48b0f3ae PJ |
10614 | doc: /* List of coding-categories (symbols) ordered by priority. |
10615 | ||
10616 | On detecting a coding system, Emacs tries code detection algorithms | |
10617 | associated with each coding-category one by one in this order. When | |
10618 | one algorithm agrees with a byte sequence of source text, the coding | |
0ec31faf KH |
10619 | system bound to the corresponding coding-category is selected. |
10620 | ||
42205607 | 10621 | Don't modify this variable directly, but use `set-coding-priority'. */); |
4ed46869 KH |
10622 | { |
10623 | int i; | |
10624 | ||
10625 | Vcoding_category_list = Qnil; | |
df7492f9 | 10626 | for (i = coding_category_max - 1; i >= 0; i--) |
4ed46869 | 10627 | Vcoding_category_list |
d46c5b12 KH |
10628 | = Fcons (XVECTOR (Vcoding_category_table)->contents[i], |
10629 | Vcoding_category_list); | |
4ed46869 KH |
10630 | } |
10631 | ||
10632 | DEFVAR_LISP ("coding-system-for-read", &Vcoding_system_for_read, | |
48b0f3ae PJ |
10633 | doc: /* Specify the coding system for read operations. |
10634 | It is useful to bind this variable with `let', but do not set it globally. | |
10635 | If the value is a coding system, it is used for decoding on read operation. | |
446dcd75 JB |
10636 | If not, an appropriate element is used from one of the coding system alists. |
10637 | There are three such tables: `file-coding-system-alist', | |
48b0f3ae | 10638 | `process-coding-system-alist', and `network-coding-system-alist'. */); |
4ed46869 KH |
10639 | Vcoding_system_for_read = Qnil; |
10640 | ||
10641 | DEFVAR_LISP ("coding-system-for-write", &Vcoding_system_for_write, | |
48b0f3ae PJ |
10642 | doc: /* Specify the coding system for write operations. |
10643 | Programs bind this variable with `let', but you should not set it globally. | |
10644 | If the value is a coding system, it is used for encoding of output, | |
10645 | when writing it to a file and when sending it to a file or subprocess. | |
10646 | ||
10647 | If this does not specify a coding system, an appropriate element | |
446dcd75 JB |
10648 | is used from one of the coding system alists. |
10649 | There are three such tables: `file-coding-system-alist', | |
48b0f3ae PJ |
10650 | `process-coding-system-alist', and `network-coding-system-alist'. |
10651 | For output to files, if the above procedure does not specify a coding system, | |
10652 | the value of `buffer-file-coding-system' is used. */); | |
4ed46869 KH |
10653 | Vcoding_system_for_write = Qnil; |
10654 | ||
10655 | DEFVAR_LISP ("last-coding-system-used", &Vlast_coding_system_used, | |
df7492f9 KH |
10656 | doc: /* |
10657 | Coding system used in the latest file or process I/O. */); | |
4ed46869 KH |
10658 | Vlast_coding_system_used = Qnil; |
10659 | ||
065e3595 KH |
10660 | DEFVAR_LISP ("last-code-conversion-error", &Vlast_code_conversion_error, |
10661 | doc: /* | |
10662 | Error status of the last code conversion. | |
10663 | ||
10664 | When an error was detected in the last code conversion, this variable | |
10665 | is set to one of the following symbols. | |
10666 | `insufficient-source' | |
10667 | `inconsistent-eol' | |
10668 | `invalid-source' | |
10669 | `interrupted' | |
10670 | `insufficient-memory' | |
10671 | When no error was detected, the value doesn't change. So, to check | |
10672 | the error status of a code conversion by this variable, you must | |
10673 | explicitly set this variable to nil before performing code | |
10674 | conversion. */); | |
10675 | Vlast_code_conversion_error = Qnil; | |
10676 | ||
9ce27fde | 10677 | DEFVAR_BOOL ("inhibit-eol-conversion", &inhibit_eol_conversion, |
df7492f9 KH |
10678 | doc: /* |
10679 | *Non-nil means always inhibit code conversion of end-of-line format. | |
48b0f3ae PJ |
10680 | See info node `Coding Systems' and info node `Text and Binary' concerning |
10681 | such conversion. */); | |
9ce27fde KH |
10682 | inhibit_eol_conversion = 0; |
10683 | ||
ed29121d | 10684 | DEFVAR_BOOL ("inherit-process-coding-system", &inherit_process_coding_system, |
df7492f9 KH |
10685 | doc: /* |
10686 | Non-nil means process buffer inherits coding system of process output. | |
48b0f3ae PJ |
10687 | Bind it to t if the process output is to be treated as if it were a file |
10688 | read from some filesystem. */); | |
ed29121d EZ |
10689 | inherit_process_coding_system = 0; |
10690 | ||
02ba4723 | 10691 | DEFVAR_LISP ("file-coding-system-alist", &Vfile_coding_system_alist, |
df7492f9 KH |
10692 | doc: /* |
10693 | Alist to decide a coding system to use for a file I/O operation. | |
48b0f3ae PJ |
10694 | The format is ((PATTERN . VAL) ...), |
10695 | where PATTERN is a regular expression matching a file name, | |
10696 | VAL is a coding system, a cons of coding systems, or a function symbol. | |
10697 | If VAL is a coding system, it is used for both decoding and encoding | |
10698 | the file contents. | |
10699 | If VAL is a cons of coding systems, the car part is used for decoding, | |
10700 | and the cdr part is used for encoding. | |
10701 | If VAL is a function symbol, the function must return a coding system | |
2c53e699 KH |
10702 | or a cons of coding systems which are used as above. The function is |
10703 | called with an argument that is a list of the arguments with which | |
5a0bbd9a KH |
10704 | `find-operation-coding-system' was called. If the function can't decide |
10705 | a coding system, it can return `undecided' so that the normal | |
10706 | code-detection is performed. | |
48b0f3ae PJ |
10707 | |
10708 | See also the function `find-operation-coding-system' | |
10709 | and the variable `auto-coding-alist'. */); | |
02ba4723 KH |
10710 | Vfile_coding_system_alist = Qnil; |
10711 | ||
10712 | DEFVAR_LISP ("process-coding-system-alist", &Vprocess_coding_system_alist, | |
df7492f9 KH |
10713 | doc: /* |
10714 | Alist to decide a coding system to use for a process I/O operation. | |
48b0f3ae PJ |
10715 | The format is ((PATTERN . VAL) ...), |
10716 | where PATTERN is a regular expression matching a program name, | |
10717 | VAL is a coding system, a cons of coding systems, or a function symbol. | |
10718 | If VAL is a coding system, it is used for both decoding what received | |
10719 | from the program and encoding what sent to the program. | |
10720 | If VAL is a cons of coding systems, the car part is used for decoding, | |
10721 | and the cdr part is used for encoding. | |
10722 | If VAL is a function symbol, the function must return a coding system | |
10723 | or a cons of coding systems which are used as above. | |
10724 | ||
10725 | See also the function `find-operation-coding-system'. */); | |
02ba4723 KH |
10726 | Vprocess_coding_system_alist = Qnil; |
10727 | ||
10728 | DEFVAR_LISP ("network-coding-system-alist", &Vnetwork_coding_system_alist, | |
df7492f9 KH |
10729 | doc: /* |
10730 | Alist to decide a coding system to use for a network I/O operation. | |
48b0f3ae PJ |
10731 | The format is ((PATTERN . VAL) ...), |
10732 | where PATTERN is a regular expression matching a network service name | |
10733 | or is a port number to connect to, | |
10734 | VAL is a coding system, a cons of coding systems, or a function symbol. | |
10735 | If VAL is a coding system, it is used for both decoding what received | |
10736 | from the network stream and encoding what sent to the network stream. | |
10737 | If VAL is a cons of coding systems, the car part is used for decoding, | |
10738 | and the cdr part is used for encoding. | |
10739 | If VAL is a function symbol, the function must return a coding system | |
10740 | or a cons of coding systems which are used as above. | |
10741 | ||
10742 | See also the function `find-operation-coding-system'. */); | |
02ba4723 | 10743 | Vnetwork_coding_system_alist = Qnil; |
4ed46869 | 10744 | |
68c45bf0 | 10745 | DEFVAR_LISP ("locale-coding-system", &Vlocale_coding_system, |
75205970 RS |
10746 | doc: /* Coding system to use with system messages. |
10747 | Also used for decoding keyboard input on X Window system. */); | |
68c45bf0 PE |
10748 | Vlocale_coding_system = Qnil; |
10749 | ||
005f0d35 | 10750 | /* The eol mnemonics are reset in startup.el system-dependently. */ |
7722baf9 | 10751 | DEFVAR_LISP ("eol-mnemonic-unix", &eol_mnemonic_unix, |
df7492f9 KH |
10752 | doc: /* |
10753 | *String displayed in mode line for UNIX-like (LF) end-of-line format. */); | |
d67b4f80 | 10754 | eol_mnemonic_unix = make_pure_c_string (":"); |
4ed46869 | 10755 | |
7722baf9 | 10756 | DEFVAR_LISP ("eol-mnemonic-dos", &eol_mnemonic_dos, |
df7492f9 KH |
10757 | doc: /* |
10758 | *String displayed in mode line for DOS-like (CRLF) end-of-line format. */); | |
d67b4f80 | 10759 | eol_mnemonic_dos = make_pure_c_string ("\\"); |
4ed46869 | 10760 | |
7722baf9 | 10761 | DEFVAR_LISP ("eol-mnemonic-mac", &eol_mnemonic_mac, |
df7492f9 KH |
10762 | doc: /* |
10763 | *String displayed in mode line for MAC-like (CR) end-of-line format. */); | |
d67b4f80 | 10764 | eol_mnemonic_mac = make_pure_c_string ("/"); |
4ed46869 | 10765 | |
7722baf9 | 10766 | DEFVAR_LISP ("eol-mnemonic-undecided", &eol_mnemonic_undecided, |
df7492f9 KH |
10767 | doc: /* |
10768 | *String displayed in mode line when end-of-line format is not yet determined. */); | |
d67b4f80 | 10769 | eol_mnemonic_undecided = make_pure_c_string (":"); |
4ed46869 | 10770 | |
84fbb8a0 | 10771 | DEFVAR_LISP ("enable-character-translation", &Venable_character_translation, |
df7492f9 KH |
10772 | doc: /* |
10773 | *Non-nil enables character translation while encoding and decoding. */); | |
84fbb8a0 | 10774 | Venable_character_translation = Qt; |
bdd9fb48 | 10775 | |
f967223b | 10776 | DEFVAR_LISP ("standard-translation-table-for-decode", |
48b0f3ae PJ |
10777 | &Vstandard_translation_table_for_decode, |
10778 | doc: /* Table for translating characters while decoding. */); | |
f967223b | 10779 | Vstandard_translation_table_for_decode = Qnil; |
bdd9fb48 | 10780 | |
f967223b | 10781 | DEFVAR_LISP ("standard-translation-table-for-encode", |
48b0f3ae PJ |
10782 | &Vstandard_translation_table_for_encode, |
10783 | doc: /* Table for translating characters while encoding. */); | |
f967223b | 10784 | Vstandard_translation_table_for_encode = Qnil; |
4ed46869 | 10785 | |
df7492f9 | 10786 | DEFVAR_LISP ("charset-revision-table", &Vcharset_revision_table, |
48b0f3ae PJ |
10787 | doc: /* Alist of charsets vs revision numbers. |
10788 | While encoding, if a charset (car part of an element) is found, | |
df7492f9 KH |
10789 | designate it with the escape sequence identifying revision (cdr part |
10790 | of the element). */); | |
10791 | Vcharset_revision_table = Qnil; | |
02ba4723 KH |
10792 | |
10793 | DEFVAR_LISP ("default-process-coding-system", | |
10794 | &Vdefault_process_coding_system, | |
48b0f3ae PJ |
10795 | doc: /* Cons of coding systems used for process I/O by default. |
10796 | The car part is used for decoding a process output, | |
10797 | the cdr part is used for encoding a text to be sent to a process. */); | |
02ba4723 | 10798 | Vdefault_process_coding_system = Qnil; |
c4825358 | 10799 | |
3f003981 | 10800 | DEFVAR_LISP ("latin-extra-code-table", &Vlatin_extra_code_table, |
df7492f9 KH |
10801 | doc: /* |
10802 | Table of extra Latin codes in the range 128..159 (inclusive). | |
48b0f3ae PJ |
10803 | This is a vector of length 256. |
10804 | If Nth element is non-nil, the existence of code N in a file | |
10805 | \(or output of subprocess) doesn't prevent it to be detected as | |
10806 | a coding system of ISO 2022 variant which has a flag | |
10807 | `accept-latin-extra-code' t (e.g. iso-latin-1) on reading a file | |
10808 | or reading output of a subprocess. | |
446dcd75 | 10809 | Only 128th through 159th elements have a meaning. */); |
3f003981 | 10810 | Vlatin_extra_code_table = Fmake_vector (make_number (256), Qnil); |
d46c5b12 KH |
10811 | |
10812 | DEFVAR_LISP ("select-safe-coding-system-function", | |
10813 | &Vselect_safe_coding_system_function, | |
df7492f9 KH |
10814 | doc: /* |
10815 | Function to call to select safe coding system for encoding a text. | |
48b0f3ae PJ |
10816 | |
10817 | If set, this function is called to force a user to select a proper | |
10818 | coding system which can encode the text in the case that a default | |
fdecf907 GM |
10819 | coding system used in each operation can't encode the text. The |
10820 | function should take care that the buffer is not modified while | |
10821 | the coding system is being selected. | |
48b0f3ae PJ |
10822 | |
10823 | The default value is `select-safe-coding-system' (which see). */); | |
d46c5b12 KH |
10824 | Vselect_safe_coding_system_function = Qnil; |
10825 | ||
5d5bf4d8 KH |
10826 | DEFVAR_BOOL ("coding-system-require-warning", |
10827 | &coding_system_require_warning, | |
10828 | doc: /* Internal use only. | |
6b89e3aa KH |
10829 | If non-nil, on writing a file, `select-safe-coding-system-function' is |
10830 | called even if `coding-system-for-write' is non-nil. The command | |
10831 | `universal-coding-system-argument' binds this variable to t temporarily. */); | |
5d5bf4d8 KH |
10832 | coding_system_require_warning = 0; |
10833 | ||
10834 | ||
22ab2303 | 10835 | DEFVAR_BOOL ("inhibit-iso-escape-detection", |
74383408 | 10836 | &inhibit_iso_escape_detection, |
df7492f9 | 10837 | doc: /* |
97b1b294 | 10838 | If non-nil, Emacs ignores ISO-2022 escape sequences during code detection. |
48b0f3ae | 10839 | |
97b1b294 EZ |
10840 | When Emacs reads text, it tries to detect how the text is encoded. |
10841 | This code detection is sensitive to escape sequences. If Emacs sees | |
10842 | a valid ISO-2022 escape sequence, it assumes the text is encoded in one | |
10843 | of the ISO2022 encodings, and decodes text by the corresponding coding | |
10844 | system (e.g. `iso-2022-7bit'). | |
48b0f3ae PJ |
10845 | |
10846 | However, there may be a case that you want to read escape sequences in | |
10847 | a file as is. In such a case, you can set this variable to non-nil. | |
97b1b294 EZ |
10848 | Then the code detection will ignore any escape sequences, and no text is |
10849 | detected as encoded in some ISO-2022 encoding. The result is that all | |
48b0f3ae PJ |
10850 | escape sequences become visible in a buffer. |
10851 | ||
10852 | The default value is nil, and it is strongly recommended not to change | |
10853 | it. That is because many Emacs Lisp source files that contain | |
10854 | non-ASCII characters are encoded by the coding system `iso-2022-7bit' | |
10855 | in Emacs's distribution, and they won't be decoded correctly on | |
10856 | reading if you suppress escape sequence detection. | |
10857 | ||
10858 | The other way to read escape sequences in a file without decoding is | |
97b1b294 | 10859 | to explicitly specify some coding system that doesn't use ISO-2022 |
48b0f3ae | 10860 | escape sequence (e.g `latin-1') on reading by \\[universal-coding-system-argument]. */); |
74383408 | 10861 | inhibit_iso_escape_detection = 0; |
002fdb44 | 10862 | |
97b1b294 EZ |
10863 | DEFVAR_BOOL ("inhibit-null-byte-detection", |
10864 | &inhibit_null_byte_detection, | |
10865 | doc: /* If non-nil, Emacs ignores null bytes on code detection. | |
10866 | By default, Emacs treats it as binary data, and does not attempt to | |
10867 | decode it. The effect is as if you specified `no-conversion' for | |
10868 | reading that text. | |
10869 | ||
10870 | Set this to non-nil when a regular text happens to include null bytes. | |
10871 | Examples are Index nodes of Info files and null-byte delimited output | |
10872 | from GNU Find and GNU Grep. Emacs will then ignore the null bytes and | |
10873 | decode text as usual. */); | |
10874 | inhibit_null_byte_detection = 0; | |
10875 | ||
002fdb44 | 10876 | DEFVAR_LISP ("translation-table-for-input", &Vtranslation_table_for_input, |
15c8f9d1 | 10877 | doc: /* Char table for translating self-inserting characters. |
446dcd75 | 10878 | This is applied to the result of input methods, not their input. |
8434d0b8 EZ |
10879 | See also `keyboard-translate-table'. |
10880 | ||
10881 | Use of this variable for character code unification was rendered | |
10882 | obsolete in Emacs 23.1 and later, since Unicode is now the basis of | |
10883 | internal character representation. */); | |
002fdb44 | 10884 | Vtranslation_table_for_input = Qnil; |
8f924df7 | 10885 | |
2c78b7e1 KH |
10886 | { |
10887 | Lisp_Object args[coding_arg_max]; | |
8f924df7 | 10888 | Lisp_Object plist[16]; |
2c78b7e1 KH |
10889 | int i; |
10890 | ||
10891 | for (i = 0; i < coding_arg_max; i++) | |
10892 | args[i] = Qnil; | |
10893 | ||
d67b4f80 | 10894 | plist[0] = intern_c_string (":name"); |
2c78b7e1 | 10895 | plist[1] = args[coding_arg_name] = Qno_conversion; |
d67b4f80 | 10896 | plist[2] = intern_c_string (":mnemonic"); |
2c78b7e1 | 10897 | plist[3] = args[coding_arg_mnemonic] = make_number ('='); |
d67b4f80 | 10898 | plist[4] = intern_c_string (":coding-type"); |
2c78b7e1 | 10899 | plist[5] = args[coding_arg_coding_type] = Qraw_text; |
d67b4f80 | 10900 | plist[6] = intern_c_string (":ascii-compatible-p"); |
2c78b7e1 | 10901 | plist[7] = args[coding_arg_ascii_compatible_p] = Qt; |
d67b4f80 | 10902 | plist[8] = intern_c_string (":default-char"); |
2c78b7e1 | 10903 | plist[9] = args[coding_arg_default_char] = make_number (0); |
d67b4f80 | 10904 | plist[10] = intern_c_string (":for-unibyte"); |
8f924df7 | 10905 | plist[11] = args[coding_arg_for_unibyte] = Qt; |
d67b4f80 DN |
10906 | plist[12] = intern_c_string (":docstring"); |
10907 | plist[13] = make_pure_c_string ("Do no conversion.\n\ | |
2c78b7e1 KH |
10908 | \n\ |
10909 | When you visit a file with this coding, the file is read into a\n\ | |
10910 | unibyte buffer as is, thus each byte of a file is treated as a\n\ | |
10911 | character."); | |
d67b4f80 | 10912 | plist[14] = intern_c_string (":eol-type"); |
8f924df7 KH |
10913 | plist[15] = args[coding_arg_eol_type] = Qunix; |
10914 | args[coding_arg_plist] = Flist (16, plist); | |
2c78b7e1 | 10915 | Fdefine_coding_system_internal (coding_arg_max, args); |
ae6f73fa KH |
10916 | |
10917 | plist[1] = args[coding_arg_name] = Qundecided; | |
10918 | plist[3] = args[coding_arg_mnemonic] = make_number ('-'); | |
10919 | plist[5] = args[coding_arg_coding_type] = Qundecided; | |
10920 | /* This is already set. | |
35befdaa | 10921 | plist[7] = args[coding_arg_ascii_compatible_p] = Qt; */ |
d67b4f80 | 10922 | plist[8] = intern_c_string (":charset-list"); |
ae6f73fa KH |
10923 | plist[9] = args[coding_arg_charset_list] = Fcons (Qascii, Qnil); |
10924 | plist[11] = args[coding_arg_for_unibyte] = Qnil; | |
d67b4f80 | 10925 | plist[13] = make_pure_c_string ("No conversion on encoding, automatic conversion on decoding."); |
ae6f73fa KH |
10926 | plist[15] = args[coding_arg_eol_type] = Qnil; |
10927 | args[coding_arg_plist] = Flist (16, plist); | |
10928 | Fdefine_coding_system_internal (coding_arg_max, args); | |
2c78b7e1 KH |
10929 | } |
10930 | ||
2c78b7e1 | 10931 | setup_coding_system (Qno_conversion, &safe_terminal_coding); |
ff563fce KH |
10932 | |
10933 | { | |
10934 | int i; | |
10935 | ||
10936 | for (i = 0; i < coding_category_max; i++) | |
10937 | Fset (AREF (Vcoding_category_table, i), Qno_conversion); | |
10938 | } | |
fcbcfb64 KH |
10939 | #if defined (MSDOS) || defined (WINDOWSNT) |
10940 | system_eol_type = Qdos; | |
10941 | #else | |
10942 | system_eol_type = Qunix; | |
10943 | #endif | |
10944 | staticpro (&system_eol_type); | |
4ed46869 KH |
10945 | } |
10946 | ||
68c45bf0 PE |
10947 | char * |
10948 | emacs_strerror (error_number) | |
10949 | int error_number; | |
10950 | { | |
10951 | char *str; | |
10952 | ||
ca9c0567 | 10953 | synchronize_system_messages_locale (); |
68c45bf0 PE |
10954 | str = strerror (error_number); |
10955 | ||
10956 | if (! NILP (Vlocale_coding_system)) | |
10957 | { | |
10958 | Lisp_Object dec = code_convert_string_norecord (build_string (str), | |
10959 | Vlocale_coding_system, | |
10960 | 0); | |
d5db4077 | 10961 | str = (char *) SDATA (dec); |
68c45bf0 PE |
10962 | } |
10963 | ||
10964 | return str; | |
10965 | } | |
10966 | ||
4ed46869 | 10967 | #endif /* emacs */ |
9ffd559c KH |
10968 | |
10969 | /* arch-tag: 3a3a2b01-5ff6-4071-9afe-f5b808d9229d | |
10970 | (do not change this comment) */ |