Commit | Line | Data |
---|---|---|
9542cb1f | 1 | /* Coding system handler (conversion, detection, etc). |
aaef169d | 2 | Copyright (C) 2001, 2002, 2003, 2004, 2005, |
8cabe764 | 3 | 2006, 2007, 2008 Free Software Foundation, Inc. |
7976eda0 | 4 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
8cabe764 | 5 | 2005, 2006, 2007, 2008 |
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 | ||
14 | GNU Emacs is free software; you can redistribute it and/or modify | |
15 | it under the terms of the GNU General Public License as published by | |
1427aa65 | 16 | the Free Software Foundation; either version 3, or (at your option) |
369314dc | 17 | 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 KH |
24 | You should have received a copy of the GNU General Public License |
25 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
26 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
27 | Boston, MA 02110-1301, USA. */ | |
4ed46869 KH |
28 | |
29 | /*** TABLE OF CONTENTS *** | |
30 | ||
b73bfc1c | 31 | 0. General comments |
4ed46869 | 32 | 1. Preamble |
df7492f9 KH |
33 | 2. Emacs' internal format (emacs-utf-8) handlers |
34 | 3. UTF-8 handlers | |
35 | 4. UTF-16 handlers | |
36 | 5. Charset-base coding systems handlers | |
37 | 6. emacs-mule (old Emacs' internal format) handlers | |
38 | 7. ISO2022 handlers | |
39 | 8. Shift-JIS and BIG5 handlers | |
40 | 9. CCL handlers | |
41 | 10. C library functions | |
42 | 11. Emacs Lisp library functions | |
43 | 12. Postamble | |
4ed46869 KH |
44 | |
45 | */ | |
46 | ||
df7492f9 | 47 | /*** 0. General comments *** |
b73bfc1c KH |
48 | |
49 | ||
df7492f9 | 50 | CODING SYSTEM |
4ed46869 | 51 | |
5bad0796 DL |
52 | A coding system is an object for an encoding mechanism that contains |
53 | information about how to convert byte sequences to character | |
e19c3639 KH |
54 | sequences and vice versa. When we say "decode", it means converting |
55 | a byte sequence of a specific coding system into a character | |
56 | sequence that is represented by Emacs' internal coding system | |
57 | `emacs-utf-8', and when we say "encode", it means converting a | |
58 | character sequence of emacs-utf-8 to a byte sequence of a specific | |
0ef69138 | 59 | coding system. |
4ed46869 | 60 | |
e19c3639 KH |
61 | In Emacs Lisp, a coding system is represented by a Lisp symbol. In |
62 | C level, a coding system is represented by a vector of attributes | |
5bad0796 | 63 | stored in the hash table Vcharset_hash_table. The conversion from |
e19c3639 KH |
64 | coding system symbol to attributes vector is done by looking up |
65 | Vcharset_hash_table by the symbol. | |
4ed46869 | 66 | |
e19c3639 | 67 | Coding systems are classified into the following types depending on |
5bad0796 | 68 | the encoding mechanism. Here's a brief description of the types. |
4ed46869 | 69 | |
df7492f9 KH |
70 | o UTF-8 |
71 | ||
72 | o UTF-16 | |
73 | ||
74 | o Charset-base coding system | |
75 | ||
76 | A coding system defined by one or more (coded) character sets. | |
5bad0796 | 77 | Decoding and encoding are done by a code converter defined for each |
df7492f9 KH |
78 | character set. |
79 | ||
5bad0796 | 80 | o Old Emacs internal format (emacs-mule) |
df7492f9 | 81 | |
5bad0796 | 82 | The coding system adopted by old versions of Emacs (20 and 21). |
4ed46869 | 83 | |
df7492f9 | 84 | o ISO2022-base coding system |
4ed46869 KH |
85 | |
86 | The most famous coding system for multiple character sets. X's | |
df7492f9 KH |
87 | Compound Text, various EUCs (Extended Unix Code), and coding systems |
88 | used in the Internet communication such as ISO-2022-JP are all | |
89 | variants of ISO2022. | |
4ed46869 | 90 | |
df7492f9 | 91 | o SJIS (or Shift-JIS or MS-Kanji-Code) |
93dec019 | 92 | |
4ed46869 KH |
93 | A coding system to encode character sets: ASCII, JISX0201, and |
94 | JISX0208. Widely used for PC's in Japan. Details are described in | |
df7492f9 | 95 | section 8. |
4ed46869 | 96 | |
df7492f9 | 97 | o BIG5 |
4ed46869 | 98 | |
df7492f9 | 99 | A coding system to encode character sets: ASCII and Big5. Widely |
cfb43547 | 100 | used for Chinese (mainly in Taiwan and Hong Kong). Details are |
df7492f9 KH |
101 | described in section 8. In this file, when we write "big5" (all |
102 | lowercase), we mean the coding system, and when we write "Big5" | |
103 | (capitalized), we mean the character set. | |
4ed46869 | 104 | |
df7492f9 | 105 | o CCL |
27901516 | 106 | |
5bad0796 | 107 | If a user wants to decode/encode text encoded in a coding system |
df7492f9 KH |
108 | not listed above, he can supply a decoder and an encoder for it in |
109 | CCL (Code Conversion Language) programs. Emacs executes the CCL | |
110 | program while decoding/encoding. | |
27901516 | 111 | |
df7492f9 | 112 | o Raw-text |
4ed46869 | 113 | |
5a936b46 | 114 | A coding system for text containing raw eight-bit data. Emacs |
5bad0796 | 115 | treats each byte of source text as a character (except for |
df7492f9 | 116 | end-of-line conversion). |
4ed46869 | 117 | |
df7492f9 KH |
118 | o No-conversion |
119 | ||
120 | Like raw text, but don't do end-of-line conversion. | |
4ed46869 | 121 | |
4ed46869 | 122 | |
df7492f9 | 123 | END-OF-LINE FORMAT |
4ed46869 | 124 | |
5bad0796 | 125 | How text end-of-line is encoded depends on operating system. For |
df7492f9 | 126 | instance, Unix's format is just one byte of LF (line-feed) code, |
f4dee582 | 127 | whereas DOS's format is two-byte sequence of `carriage-return' and |
d46c5b12 KH |
128 | `line-feed' codes. MacOS's format is usually one byte of |
129 | `carriage-return'. | |
4ed46869 | 130 | |
cfb43547 | 131 | Since text character encoding and end-of-line encoding are |
df7492f9 KH |
132 | independent, any coding system described above can take any format |
133 | of end-of-line (except for no-conversion). | |
4ed46869 | 134 | |
e19c3639 KH |
135 | STRUCT CODING_SYSTEM |
136 | ||
137 | Before using a coding system for code conversion (i.e. decoding and | |
138 | encoding), we setup a structure of type `struct coding_system'. | |
139 | This structure keeps various information about a specific code | |
5bad0796 | 140 | conversion (e.g. the location of source and destination data). |
4ed46869 KH |
141 | |
142 | */ | |
143 | ||
df7492f9 KH |
144 | /* COMMON MACROS */ |
145 | ||
146 | ||
4ed46869 KH |
147 | /*** GENERAL NOTES on `detect_coding_XXX ()' functions *** |
148 | ||
df7492f9 | 149 | These functions check if a byte sequence specified as a source in |
ff0dacd7 KH |
150 | CODING conforms to the format of XXX, and update the members of |
151 | DETECT_INFO. | |
df7492f9 | 152 | |
ff0dacd7 | 153 | Return 1 if the byte sequence conforms to XXX, otherwise return 0. |
df7492f9 KH |
154 | |
155 | Below is the template of these functions. */ | |
156 | ||
4ed46869 | 157 | #if 0 |
df7492f9 | 158 | static int |
ff0dacd7 | 159 | detect_coding_XXX (coding, detect_info) |
df7492f9 | 160 | struct coding_system *coding; |
ff0dacd7 | 161 | struct coding_detection_info *detect_info; |
4ed46869 | 162 | { |
f1d34bca MB |
163 | const unsigned char *src = coding->source; |
164 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
df7492f9 | 165 | int multibytep = coding->src_multibyte; |
ff0dacd7 | 166 | int consumed_chars = 0; |
df7492f9 KH |
167 | int found = 0; |
168 | ...; | |
169 | ||
170 | while (1) | |
171 | { | |
172 | /* Get one byte from the source. If the souce is exausted, jump | |
173 | to no_more_source:. */ | |
174 | ONE_MORE_BYTE (c); | |
ff0dacd7 KH |
175 | |
176 | if (! __C_conforms_to_XXX___ (c)) | |
177 | break; | |
178 | if (! __C_strongly_suggests_XXX__ (c)) | |
179 | found = CATEGORY_MASK_XXX; | |
df7492f9 | 180 | } |
ff0dacd7 KH |
181 | /* The byte sequence is invalid for XXX. */ |
182 | detect_info->rejected |= CATEGORY_MASK_XXX; | |
df7492f9 | 183 | return 0; |
ff0dacd7 | 184 | |
df7492f9 | 185 | no_more_source: |
ff0dacd7 KH |
186 | /* The source exausted successfully. */ |
187 | detect_info->found |= found; | |
df7492f9 | 188 | return 1; |
4ed46869 KH |
189 | } |
190 | #endif | |
191 | ||
192 | /*** GENERAL NOTES on `decode_coding_XXX ()' functions *** | |
193 | ||
df7492f9 KH |
194 | These functions decode a byte sequence specified as a source by |
195 | CODING. The resulting multibyte text goes to a place pointed to by | |
196 | CODING->charbuf, the length of which should not exceed | |
197 | CODING->charbuf_size; | |
d46c5b12 | 198 | |
df7492f9 KH |
199 | These functions set the information of original and decoded texts in |
200 | CODING->consumed, CODING->consumed_char, and CODING->charbuf_used. | |
201 | They also set CODING->result to one of CODING_RESULT_XXX indicating | |
202 | how the decoding is finished. | |
d46c5b12 | 203 | |
df7492f9 | 204 | Below is the template of these functions. */ |
d46c5b12 | 205 | |
4ed46869 | 206 | #if 0 |
b73bfc1c | 207 | static void |
df7492f9 | 208 | decode_coding_XXXX (coding) |
4ed46869 | 209 | struct coding_system *coding; |
4ed46869 | 210 | { |
f1d34bca MB |
211 | const unsigned char *src = coding->source + coding->consumed; |
212 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
df7492f9 KH |
213 | /* SRC_BASE remembers the start position in source in each loop. |
214 | The loop will be exited when there's not enough source code, or | |
215 | when there's no room in CHARBUF for a decoded character. */ | |
f1d34bca | 216 | const unsigned char *src_base; |
df7492f9 | 217 | /* A buffer to produce decoded characters. */ |
69a80ea3 KH |
218 | int *charbuf = coding->charbuf + coding->charbuf_used; |
219 | int *charbuf_end = coding->charbuf + coding->charbuf_size; | |
df7492f9 KH |
220 | int multibytep = coding->src_multibyte; |
221 | ||
222 | while (1) | |
223 | { | |
224 | src_base = src; | |
225 | if (charbuf < charbuf_end) | |
226 | /* No more room to produce a decoded character. */ | |
227 | break; | |
228 | ONE_MORE_BYTE (c); | |
229 | /* Decode it. */ | |
230 | } | |
231 | ||
232 | no_more_source: | |
233 | if (src_base < src_end | |
234 | && coding->mode & CODING_MODE_LAST_BLOCK) | |
235 | /* If the source ends by partial bytes to construct a character, | |
236 | treat them as eight-bit raw data. */ | |
237 | while (src_base < src_end && charbuf < charbuf_end) | |
238 | *charbuf++ = *src_base++; | |
239 | /* Remember how many bytes and characters we consumed. If the | |
240 | source is multibyte, the bytes and chars are not identical. */ | |
241 | coding->consumed = coding->consumed_char = src_base - coding->source; | |
242 | /* Remember how many characters we produced. */ | |
243 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
244 | } |
245 | #endif | |
246 | ||
247 | /*** GENERAL NOTES on `encode_coding_XXX ()' functions *** | |
248 | ||
df7492f9 KH |
249 | These functions encode SRC_BYTES length text at SOURCE of Emacs' |
250 | internal multibyte format by CODING. The resulting byte sequence | |
b73bfc1c KH |
251 | goes to a place pointed to by DESTINATION, the length of which |
252 | should not exceed DST_BYTES. | |
d46c5b12 | 253 | |
df7492f9 KH |
254 | These functions set the information of original and encoded texts in |
255 | the members produced, produced_char, consumed, and consumed_char of | |
256 | the structure *CODING. They also set the member result to one of | |
257 | CODING_RESULT_XXX indicating how the encoding finished. | |
d46c5b12 | 258 | |
df7492f9 KH |
259 | DST_BYTES zero means that source area and destination area are |
260 | overlapped, which means that we can produce a encoded text until it | |
261 | reaches at the head of not-yet-encoded source text. | |
d46c5b12 | 262 | |
df7492f9 | 263 | Below is a template of these functions. */ |
4ed46869 | 264 | #if 0 |
b73bfc1c | 265 | static void |
df7492f9 | 266 | encode_coding_XXX (coding) |
4ed46869 | 267 | struct coding_system *coding; |
4ed46869 | 268 | { |
df7492f9 KH |
269 | int multibytep = coding->dst_multibyte; |
270 | int *charbuf = coding->charbuf; | |
271 | int *charbuf_end = charbuf->charbuf + coding->charbuf_used; | |
272 | unsigned char *dst = coding->destination + coding->produced; | |
273 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
274 | unsigned char *adjusted_dst_end = dst_end - _MAX_BYTES_PRODUCED_IN_LOOP_; | |
275 | int produced_chars = 0; | |
276 | ||
277 | for (; charbuf < charbuf_end && dst < adjusted_dst_end; charbuf++) | |
278 | { | |
279 | int c = *charbuf; | |
280 | /* Encode C into DST, and increment DST. */ | |
281 | } | |
282 | label_no_more_destination: | |
283 | /* How many chars and bytes we produced. */ | |
284 | coding->produced_char += produced_chars; | |
285 | coding->produced = dst - coding->destination; | |
4ed46869 KH |
286 | } |
287 | #endif | |
288 | ||
4ed46869 KH |
289 | \f |
290 | /*** 1. Preamble ***/ | |
291 | ||
68c45bf0 | 292 | #include <config.h> |
4ed46869 KH |
293 | #include <stdio.h> |
294 | ||
4ed46869 KH |
295 | #include "lisp.h" |
296 | #include "buffer.h" | |
df7492f9 | 297 | #include "character.h" |
4ed46869 KH |
298 | #include "charset.h" |
299 | #include "ccl.h" | |
df7492f9 | 300 | #include "composite.h" |
4ed46869 KH |
301 | #include "coding.h" |
302 | #include "window.h" | |
b8299c66 KL |
303 | #include "frame.h" |
304 | #include "termhooks.h" | |
4ed46869 | 305 | |
df7492f9 | 306 | Lisp_Object Vcoding_system_hash_table; |
4ed46869 | 307 | |
df7492f9 | 308 | Lisp_Object Qcoding_system, Qcoding_aliases, Qeol_type; |
1965cb73 DL |
309 | Lisp_Object Qunix, Qdos; |
310 | extern Lisp_Object Qmac; /* frame.c */ | |
4ed46869 KH |
311 | Lisp_Object Qbuffer_file_coding_system; |
312 | Lisp_Object Qpost_read_conversion, Qpre_write_conversion; | |
df7492f9 | 313 | Lisp_Object Qdefault_char; |
27901516 | 314 | Lisp_Object Qno_conversion, Qundecided; |
df7492f9 | 315 | Lisp_Object Qcharset, Qiso_2022, Qutf_8, Qutf_16, Qshift_jis, Qbig5; |
b49a1807 | 316 | Lisp_Object Qbig, Qlittle; |
bb0115a2 | 317 | Lisp_Object Qcoding_system_history; |
1397dc18 | 318 | Lisp_Object Qvalid_codes; |
a6f87d34 KH |
319 | Lisp_Object QCcategory, QCmnemonic, QCdefalut_char; |
320 | Lisp_Object QCdecode_translation_table, QCencode_translation_table; | |
321 | Lisp_Object QCpost_read_conversion, QCpre_write_conversion; | |
35befdaa | 322 | Lisp_Object QCascii_compatible_p; |
4ed46869 KH |
323 | |
324 | extern Lisp_Object Qinsert_file_contents, Qwrite_region; | |
387f6ba5 | 325 | Lisp_Object Qcall_process, Qcall_process_region; |
4ed46869 KH |
326 | Lisp_Object Qstart_process, Qopen_network_stream; |
327 | Lisp_Object Qtarget_idx; | |
328 | ||
065e3595 KH |
329 | Lisp_Object Qinsufficient_source, Qinconsistent_eol, Qinvalid_source; |
330 | Lisp_Object Qinterrupted, Qinsufficient_memory; | |
331 | ||
c7183fb8 GM |
332 | extern Lisp_Object Qcompletion_ignore_case; |
333 | ||
44e8490d KH |
334 | /* If a symbol has this property, evaluate the value to define the |
335 | symbol as a coding system. */ | |
336 | static Lisp_Object Qcoding_system_define_form; | |
337 | ||
5d5bf4d8 KH |
338 | int coding_system_require_warning; |
339 | ||
d46c5b12 KH |
340 | Lisp_Object Vselect_safe_coding_system_function; |
341 | ||
7722baf9 EZ |
342 | /* Mnemonic string for each format of end-of-line. */ |
343 | Lisp_Object eol_mnemonic_unix, eol_mnemonic_dos, eol_mnemonic_mac; | |
344 | /* Mnemonic string to indicate format of end-of-line is not yet | |
4ed46869 | 345 | decided. */ |
7722baf9 | 346 | Lisp_Object eol_mnemonic_undecided; |
4ed46869 | 347 | |
fcbcfb64 KH |
348 | /* Format of end-of-line decided by system. This is Qunix on |
349 | Unix and Mac, Qdos on DOS/Windows. | |
350 | This has an effect only for external encoding (i.e. for output to | |
351 | file and process), not for in-buffer or Lisp string encoding. */ | |
352 | static Lisp_Object system_eol_type; | |
353 | ||
4ed46869 KH |
354 | #ifdef emacs |
355 | ||
4608c386 KH |
356 | Lisp_Object Vcoding_system_list, Vcoding_system_alist; |
357 | ||
358 | Lisp_Object Qcoding_system_p, Qcoding_system_error; | |
4ed46869 | 359 | |
d46c5b12 KH |
360 | /* Coding system emacs-mule and raw-text are for converting only |
361 | end-of-line format. */ | |
362 | Lisp_Object Qemacs_mule, Qraw_text; | |
8f924df7 | 363 | Lisp_Object Qutf_8_emacs; |
ecf488bc | 364 | |
4ed46869 KH |
365 | /* Coding-systems are handed between Emacs Lisp programs and C internal |
366 | routines by the following three variables. */ | |
367 | /* Coding-system for reading files and receiving data from process. */ | |
368 | Lisp_Object Vcoding_system_for_read; | |
369 | /* Coding-system for writing files and sending data to process. */ | |
370 | Lisp_Object Vcoding_system_for_write; | |
371 | /* Coding-system actually used in the latest I/O. */ | |
372 | Lisp_Object Vlast_coding_system_used; | |
065e3595 KH |
373 | /* Set to non-nil when an error is detected while code conversion. */ |
374 | Lisp_Object Vlast_code_conversion_error; | |
c4825358 | 375 | /* A vector of length 256 which contains information about special |
94487c4e | 376 | Latin codes (especially for dealing with Microsoft codes). */ |
3f003981 | 377 | Lisp_Object Vlatin_extra_code_table; |
c4825358 | 378 | |
9ce27fde KH |
379 | /* Flag to inhibit code conversion of end-of-line format. */ |
380 | int inhibit_eol_conversion; | |
381 | ||
74383408 KH |
382 | /* Flag to inhibit ISO2022 escape sequence detection. */ |
383 | int inhibit_iso_escape_detection; | |
384 | ||
ed29121d EZ |
385 | /* Flag to make buffer-file-coding-system inherit from process-coding. */ |
386 | int inherit_process_coding_system; | |
387 | ||
c4825358 KH |
388 | /* Coding system to be used to encode text for terminal display when |
389 | terminal coding system is nil. */ | |
390 | struct coding_system safe_terminal_coding; | |
391 | ||
02ba4723 KH |
392 | Lisp_Object Vfile_coding_system_alist; |
393 | Lisp_Object Vprocess_coding_system_alist; | |
394 | Lisp_Object Vnetwork_coding_system_alist; | |
4ed46869 | 395 | |
68c45bf0 PE |
396 | Lisp_Object Vlocale_coding_system; |
397 | ||
4ed46869 KH |
398 | #endif /* emacs */ |
399 | ||
f967223b KH |
400 | /* Flag to tell if we look up translation table on character code |
401 | conversion. */ | |
84fbb8a0 | 402 | Lisp_Object Venable_character_translation; |
f967223b KH |
403 | /* Standard translation table to look up on decoding (reading). */ |
404 | Lisp_Object Vstandard_translation_table_for_decode; | |
405 | /* Standard translation table to look up on encoding (writing). */ | |
406 | Lisp_Object Vstandard_translation_table_for_encode; | |
84fbb8a0 | 407 | |
f967223b KH |
408 | Lisp_Object Qtranslation_table; |
409 | Lisp_Object Qtranslation_table_id; | |
410 | Lisp_Object Qtranslation_table_for_decode; | |
411 | Lisp_Object Qtranslation_table_for_encode; | |
4ed46869 KH |
412 | |
413 | /* Alist of charsets vs revision number. */ | |
df7492f9 | 414 | static Lisp_Object Vcharset_revision_table; |
4ed46869 | 415 | |
02ba4723 KH |
416 | /* Default coding systems used for process I/O. */ |
417 | Lisp_Object Vdefault_process_coding_system; | |
418 | ||
002fdb44 DL |
419 | /* Char table for translating Quail and self-inserting input. */ |
420 | Lisp_Object Vtranslation_table_for_input; | |
421 | ||
df7492f9 KH |
422 | /* Two special coding systems. */ |
423 | Lisp_Object Vsjis_coding_system; | |
424 | Lisp_Object Vbig5_coding_system; | |
425 | ||
df7492f9 KH |
426 | /* ISO2022 section */ |
427 | ||
428 | #define CODING_ISO_INITIAL(coding, reg) \ | |
429 | (XINT (AREF (AREF (CODING_ID_ATTRS ((coding)->id), \ | |
430 | coding_attr_iso_initial), \ | |
431 | reg))) | |
432 | ||
433 | ||
434 | #define CODING_ISO_REQUEST(coding, charset_id) \ | |
435 | ((charset_id <= (coding)->max_charset_id \ | |
436 | ? (coding)->safe_charsets[charset_id] \ | |
437 | : -1)) | |
438 | ||
439 | ||
440 | #define CODING_ISO_FLAGS(coding) \ | |
441 | ((coding)->spec.iso_2022.flags) | |
442 | #define CODING_ISO_DESIGNATION(coding, reg) \ | |
443 | ((coding)->spec.iso_2022.current_designation[reg]) | |
444 | #define CODING_ISO_INVOCATION(coding, plane) \ | |
445 | ((coding)->spec.iso_2022.current_invocation[plane]) | |
446 | #define CODING_ISO_SINGLE_SHIFTING(coding) \ | |
447 | ((coding)->spec.iso_2022.single_shifting) | |
448 | #define CODING_ISO_BOL(coding) \ | |
449 | ((coding)->spec.iso_2022.bol) | |
450 | #define CODING_ISO_INVOKED_CHARSET(coding, plane) \ | |
451 | CODING_ISO_DESIGNATION ((coding), CODING_ISO_INVOCATION ((coding), (plane))) | |
452 | ||
453 | /* Control characters of ISO2022. */ | |
454 | /* code */ /* function */ | |
455 | #define ISO_CODE_LF 0x0A /* line-feed */ | |
456 | #define ISO_CODE_CR 0x0D /* carriage-return */ | |
457 | #define ISO_CODE_SO 0x0E /* shift-out */ | |
458 | #define ISO_CODE_SI 0x0F /* shift-in */ | |
459 | #define ISO_CODE_SS2_7 0x19 /* single-shift-2 for 7-bit code */ | |
460 | #define ISO_CODE_ESC 0x1B /* escape */ | |
461 | #define ISO_CODE_SS2 0x8E /* single-shift-2 */ | |
462 | #define ISO_CODE_SS3 0x8F /* single-shift-3 */ | |
463 | #define ISO_CODE_CSI 0x9B /* control-sequence-introducer */ | |
464 | ||
465 | /* All code (1-byte) of ISO2022 is classified into one of the | |
466 | followings. */ | |
467 | enum iso_code_class_type | |
468 | { | |
469 | ISO_control_0, /* Control codes in the range | |
470 | 0x00..0x1F and 0x7F, except for the | |
471 | following 5 codes. */ | |
df7492f9 KH |
472 | ISO_shift_out, /* ISO_CODE_SO (0x0E) */ |
473 | ISO_shift_in, /* ISO_CODE_SI (0x0F) */ | |
474 | ISO_single_shift_2_7, /* ISO_CODE_SS2_7 (0x19) */ | |
475 | ISO_escape, /* ISO_CODE_SO (0x1B) */ | |
476 | ISO_control_1, /* Control codes in the range | |
477 | 0x80..0x9F, except for the | |
478 | following 3 codes. */ | |
479 | ISO_single_shift_2, /* ISO_CODE_SS2 (0x8E) */ | |
480 | ISO_single_shift_3, /* ISO_CODE_SS3 (0x8F) */ | |
481 | ISO_control_sequence_introducer, /* ISO_CODE_CSI (0x9B) */ | |
482 | ISO_0x20_or_0x7F, /* Codes of the values 0x20 or 0x7F. */ | |
483 | ISO_graphic_plane_0, /* Graphic codes in the range 0x21..0x7E. */ | |
484 | ISO_0xA0_or_0xFF, /* Codes of the values 0xA0 or 0xFF. */ | |
485 | ISO_graphic_plane_1 /* Graphic codes in the range 0xA1..0xFE. */ | |
486 | }; | |
05e6f5dc | 487 | |
df7492f9 KH |
488 | /** The macros CODING_ISO_FLAG_XXX defines a flag bit of the |
489 | `iso-flags' attribute of an iso2022 coding system. */ | |
05e6f5dc | 490 | |
df7492f9 KH |
491 | /* If set, produce long-form designation sequence (e.g. ESC $ ( A) |
492 | instead of the correct short-form sequence (e.g. ESC $ A). */ | |
493 | #define CODING_ISO_FLAG_LONG_FORM 0x0001 | |
93dec019 | 494 | |
df7492f9 KH |
495 | /* If set, reset graphic planes and registers at end-of-line to the |
496 | initial state. */ | |
497 | #define CODING_ISO_FLAG_RESET_AT_EOL 0x0002 | |
05e6f5dc | 498 | |
df7492f9 KH |
499 | /* If set, reset graphic planes and registers before any control |
500 | characters to the initial state. */ | |
501 | #define CODING_ISO_FLAG_RESET_AT_CNTL 0x0004 | |
05e6f5dc | 502 | |
df7492f9 KH |
503 | /* If set, encode by 7-bit environment. */ |
504 | #define CODING_ISO_FLAG_SEVEN_BITS 0x0008 | |
4ed46869 | 505 | |
df7492f9 KH |
506 | /* If set, use locking-shift function. */ |
507 | #define CODING_ISO_FLAG_LOCKING_SHIFT 0x0010 | |
b73bfc1c | 508 | |
df7492f9 KH |
509 | /* If set, use single-shift function. Overwrite |
510 | CODING_ISO_FLAG_LOCKING_SHIFT. */ | |
511 | #define CODING_ISO_FLAG_SINGLE_SHIFT 0x0020 | |
b73bfc1c | 512 | |
df7492f9 KH |
513 | /* If set, use designation escape sequence. */ |
514 | #define CODING_ISO_FLAG_DESIGNATION 0x0040 | |
b73bfc1c | 515 | |
df7492f9 KH |
516 | /* If set, produce revision number sequence. */ |
517 | #define CODING_ISO_FLAG_REVISION 0x0080 | |
b73bfc1c | 518 | |
df7492f9 KH |
519 | /* If set, produce ISO6429's direction specifying sequence. */ |
520 | #define CODING_ISO_FLAG_DIRECTION 0x0100 | |
f4dee582 | 521 | |
df7492f9 KH |
522 | /* If set, assume designation states are reset at beginning of line on |
523 | output. */ | |
524 | #define CODING_ISO_FLAG_INIT_AT_BOL 0x0200 | |
4ed46869 | 525 | |
df7492f9 KH |
526 | /* If set, designation sequence should be placed at beginning of line |
527 | on output. */ | |
528 | #define CODING_ISO_FLAG_DESIGNATE_AT_BOL 0x0400 | |
aa72b389 | 529 | |
df7492f9 KH |
530 | /* If set, do not encode unsafe charactes on output. */ |
531 | #define CODING_ISO_FLAG_SAFE 0x0800 | |
aa72b389 | 532 | |
df7492f9 KH |
533 | /* If set, extra latin codes (128..159) are accepted as a valid code |
534 | on input. */ | |
535 | #define CODING_ISO_FLAG_LATIN_EXTRA 0x1000 | |
aa72b389 | 536 | |
df7492f9 | 537 | #define CODING_ISO_FLAG_COMPOSITION 0x2000 |
aa72b389 | 538 | |
df7492f9 | 539 | #define CODING_ISO_FLAG_EUC_TW_SHIFT 0x4000 |
aa72b389 | 540 | |
bf16eb23 | 541 | #define CODING_ISO_FLAG_USE_ROMAN 0x8000 |
aa72b389 | 542 | |
bf16eb23 | 543 | #define CODING_ISO_FLAG_USE_OLDJIS 0x10000 |
aa72b389 | 544 | |
bf16eb23 | 545 | #define CODING_ISO_FLAG_FULL_SUPPORT 0x100000 |
aa72b389 | 546 | |
df7492f9 KH |
547 | /* A character to be produced on output if encoding of the original |
548 | character is prohibited by CODING_ISO_FLAG_SAFE. */ | |
549 | #define CODING_INHIBIT_CHARACTER_SUBSTITUTION '?' | |
aa72b389 | 550 | |
4ed46869 | 551 | |
df7492f9 KH |
552 | /* UTF-16 section */ |
553 | #define CODING_UTF_16_BOM(coding) \ | |
554 | ((coding)->spec.utf_16.bom) | |
4ed46869 | 555 | |
df7492f9 KH |
556 | #define CODING_UTF_16_ENDIAN(coding) \ |
557 | ((coding)->spec.utf_16.endian) | |
4ed46869 | 558 | |
df7492f9 KH |
559 | #define CODING_UTF_16_SURROGATE(coding) \ |
560 | ((coding)->spec.utf_16.surrogate) | |
4ed46869 | 561 | |
4ed46869 | 562 | |
df7492f9 KH |
563 | /* CCL section */ |
564 | #define CODING_CCL_DECODER(coding) \ | |
565 | AREF (CODING_ID_ATTRS ((coding)->id), coding_attr_ccl_decoder) | |
566 | #define CODING_CCL_ENCODER(coding) \ | |
567 | AREF (CODING_ID_ATTRS ((coding)->id), coding_attr_ccl_encoder) | |
568 | #define CODING_CCL_VALIDS(coding) \ | |
8f924df7 | 569 | (SDATA (AREF (CODING_ID_ATTRS ((coding)->id), coding_attr_ccl_valids))) |
4ed46869 | 570 | |
5a936b46 | 571 | /* Index for each coding category in `coding_categories' */ |
4ed46869 | 572 | |
df7492f9 KH |
573 | enum coding_category |
574 | { | |
575 | coding_category_iso_7, | |
576 | coding_category_iso_7_tight, | |
577 | coding_category_iso_8_1, | |
578 | coding_category_iso_8_2, | |
579 | coding_category_iso_7_else, | |
580 | coding_category_iso_8_else, | |
581 | coding_category_utf_8, | |
582 | coding_category_utf_16_auto, | |
583 | coding_category_utf_16_be, | |
584 | coding_category_utf_16_le, | |
585 | coding_category_utf_16_be_nosig, | |
586 | coding_category_utf_16_le_nosig, | |
587 | coding_category_charset, | |
588 | coding_category_sjis, | |
589 | coding_category_big5, | |
590 | coding_category_ccl, | |
591 | coding_category_emacs_mule, | |
592 | /* All above are targets of code detection. */ | |
593 | coding_category_raw_text, | |
594 | coding_category_undecided, | |
595 | coding_category_max | |
596 | }; | |
597 | ||
598 | /* Definitions of flag bits used in detect_coding_XXXX. */ | |
599 | #define CATEGORY_MASK_ISO_7 (1 << coding_category_iso_7) | |
600 | #define CATEGORY_MASK_ISO_7_TIGHT (1 << coding_category_iso_7_tight) | |
601 | #define CATEGORY_MASK_ISO_8_1 (1 << coding_category_iso_8_1) | |
602 | #define CATEGORY_MASK_ISO_8_2 (1 << coding_category_iso_8_2) | |
603 | #define CATEGORY_MASK_ISO_7_ELSE (1 << coding_category_iso_7_else) | |
604 | #define CATEGORY_MASK_ISO_8_ELSE (1 << coding_category_iso_8_else) | |
605 | #define CATEGORY_MASK_UTF_8 (1 << coding_category_utf_8) | |
b49a1807 | 606 | #define CATEGORY_MASK_UTF_16_AUTO (1 << coding_category_utf_16_auto) |
df7492f9 KH |
607 | #define CATEGORY_MASK_UTF_16_BE (1 << coding_category_utf_16_be) |
608 | #define CATEGORY_MASK_UTF_16_LE (1 << coding_category_utf_16_le) | |
609 | #define CATEGORY_MASK_UTF_16_BE_NOSIG (1 << coding_category_utf_16_be_nosig) | |
610 | #define CATEGORY_MASK_UTF_16_LE_NOSIG (1 << coding_category_utf_16_le_nosig) | |
611 | #define CATEGORY_MASK_CHARSET (1 << coding_category_charset) | |
612 | #define CATEGORY_MASK_SJIS (1 << coding_category_sjis) | |
613 | #define CATEGORY_MASK_BIG5 (1 << coding_category_big5) | |
614 | #define CATEGORY_MASK_CCL (1 << coding_category_ccl) | |
615 | #define CATEGORY_MASK_EMACS_MULE (1 << coding_category_emacs_mule) | |
ff0dacd7 | 616 | #define CATEGORY_MASK_RAW_TEXT (1 << coding_category_raw_text) |
df7492f9 KH |
617 | |
618 | /* This value is returned if detect_coding_mask () find nothing other | |
619 | than ASCII characters. */ | |
620 | #define CATEGORY_MASK_ANY \ | |
621 | (CATEGORY_MASK_ISO_7 \ | |
622 | | CATEGORY_MASK_ISO_7_TIGHT \ | |
623 | | CATEGORY_MASK_ISO_8_1 \ | |
624 | | CATEGORY_MASK_ISO_8_2 \ | |
625 | | CATEGORY_MASK_ISO_7_ELSE \ | |
626 | | CATEGORY_MASK_ISO_8_ELSE \ | |
627 | | CATEGORY_MASK_UTF_8 \ | |
628 | | CATEGORY_MASK_UTF_16_BE \ | |
629 | | CATEGORY_MASK_UTF_16_LE \ | |
630 | | CATEGORY_MASK_UTF_16_BE_NOSIG \ | |
631 | | CATEGORY_MASK_UTF_16_LE_NOSIG \ | |
632 | | CATEGORY_MASK_CHARSET \ | |
633 | | CATEGORY_MASK_SJIS \ | |
634 | | CATEGORY_MASK_BIG5 \ | |
635 | | CATEGORY_MASK_CCL \ | |
636 | | CATEGORY_MASK_EMACS_MULE) | |
637 | ||
638 | ||
639 | #define CATEGORY_MASK_ISO_7BIT \ | |
640 | (CATEGORY_MASK_ISO_7 | CATEGORY_MASK_ISO_7_TIGHT) | |
641 | ||
642 | #define CATEGORY_MASK_ISO_8BIT \ | |
643 | (CATEGORY_MASK_ISO_8_1 | CATEGORY_MASK_ISO_8_2) | |
644 | ||
645 | #define CATEGORY_MASK_ISO_ELSE \ | |
646 | (CATEGORY_MASK_ISO_7_ELSE | CATEGORY_MASK_ISO_8_ELSE) | |
647 | ||
648 | #define CATEGORY_MASK_ISO_ESCAPE \ | |
649 | (CATEGORY_MASK_ISO_7 \ | |
650 | | CATEGORY_MASK_ISO_7_TIGHT \ | |
651 | | CATEGORY_MASK_ISO_7_ELSE \ | |
652 | | CATEGORY_MASK_ISO_8_ELSE) | |
653 | ||
654 | #define CATEGORY_MASK_ISO \ | |
655 | ( CATEGORY_MASK_ISO_7BIT \ | |
656 | | CATEGORY_MASK_ISO_8BIT \ | |
657 | | CATEGORY_MASK_ISO_ELSE) | |
658 | ||
659 | #define CATEGORY_MASK_UTF_16 \ | |
660 | (CATEGORY_MASK_UTF_16_BE \ | |
661 | | CATEGORY_MASK_UTF_16_LE \ | |
662 | | CATEGORY_MASK_UTF_16_BE_NOSIG \ | |
663 | | CATEGORY_MASK_UTF_16_LE_NOSIG) | |
664 | ||
665 | ||
666 | /* List of symbols `coding-category-xxx' ordered by priority. This | |
667 | variable is exposed to Emacs Lisp. */ | |
668 | static Lisp_Object Vcoding_category_list; | |
669 | ||
670 | /* Table of coding categories (Lisp symbols). This variable is for | |
671 | internal use oly. */ | |
672 | static Lisp_Object Vcoding_category_table; | |
673 | ||
674 | /* Table of coding-categories ordered by priority. */ | |
675 | static enum coding_category coding_priorities[coding_category_max]; | |
676 | ||
677 | /* Nth element is a coding context for the coding system bound to the | |
678 | Nth coding category. */ | |
679 | static struct coding_system coding_categories[coding_category_max]; | |
680 | ||
df7492f9 KH |
681 | /*** Commonly used macros and functions ***/ |
682 | ||
683 | #ifndef min | |
684 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
685 | #endif | |
686 | #ifndef max | |
687 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
688 | #endif | |
4ed46869 | 689 | |
24a73b0a KH |
690 | #define CODING_GET_INFO(coding, attrs, charset_list) \ |
691 | do { \ | |
692 | (attrs) = CODING_ID_ATTRS ((coding)->id); \ | |
693 | (charset_list) = CODING_ATTR_CHARSET_LIST (attrs); \ | |
df7492f9 | 694 | } while (0) |
4ed46869 | 695 | |
4ed46869 | 696 | |
df7492f9 KH |
697 | /* Safely get one byte from the source text pointed by SRC which ends |
698 | at SRC_END, and set C to that byte. If there are not enough bytes | |
065e3595 KH |
699 | in the source, it jumps to `no_more_source'. If multibytep is |
700 | nonzero, and a multibyte character is found at SRC, set C to the | |
701 | negative value of the character code. The caller should declare | |
702 | and set these variables appropriately in advance: | |
703 | src, src_end, multibytep */ | |
aa72b389 | 704 | |
065e3595 KH |
705 | #define ONE_MORE_BYTE(c) \ |
706 | do { \ | |
707 | if (src == src_end) \ | |
708 | { \ | |
709 | if (src_base < src) \ | |
710 | record_conversion_result \ | |
711 | (coding, CODING_RESULT_INSUFFICIENT_SRC); \ | |
712 | goto no_more_source; \ | |
713 | } \ | |
714 | c = *src++; \ | |
715 | if (multibytep && (c & 0x80)) \ | |
716 | { \ | |
717 | if ((c & 0xFE) == 0xC0) \ | |
718 | c = ((c & 1) << 6) | *src++; \ | |
719 | else \ | |
720 | { \ | |
35befdaa KH |
721 | src--; \ |
722 | c = - string_char (src, &src, NULL); \ | |
065e3595 KH |
723 | record_conversion_result \ |
724 | (coding, CODING_RESULT_INVALID_SRC); \ | |
725 | } \ | |
726 | } \ | |
727 | consumed_chars++; \ | |
aa72b389 KH |
728 | } while (0) |
729 | ||
aa72b389 | 730 | |
065e3595 KH |
731 | #define ONE_MORE_BYTE_NO_CHECK(c) \ |
732 | do { \ | |
733 | c = *src++; \ | |
734 | if (multibytep && (c & 0x80)) \ | |
735 | { \ | |
736 | if ((c & 0xFE) == 0xC0) \ | |
737 | c = ((c & 1) << 6) | *src++; \ | |
738 | else \ | |
739 | { \ | |
35befdaa KH |
740 | src--; \ |
741 | c = - string_char (src, &src, NULL); \ | |
065e3595 KH |
742 | record_conversion_result \ |
743 | (coding, CODING_RESULT_INVALID_SRC); \ | |
744 | } \ | |
745 | } \ | |
746 | consumed_chars++; \ | |
aa72b389 KH |
747 | } while (0) |
748 | ||
aa72b389 | 749 | |
df7492f9 KH |
750 | /* Store a byte C in the place pointed by DST and increment DST to the |
751 | next free point, and increment PRODUCED_CHARS. The caller should | |
752 | assure that C is 0..127, and declare and set the variable `dst' | |
753 | appropriately in advance. | |
754 | */ | |
aa72b389 KH |
755 | |
756 | ||
df7492f9 KH |
757 | #define EMIT_ONE_ASCII_BYTE(c) \ |
758 | do { \ | |
759 | produced_chars++; \ | |
760 | *dst++ = (c); \ | |
b6871cc7 | 761 | } while (0) |
aa72b389 KH |
762 | |
763 | ||
df7492f9 | 764 | /* Like EMIT_ONE_ASCII_BYTE byt store two bytes; C1 and C2. */ |
aa72b389 | 765 | |
df7492f9 KH |
766 | #define EMIT_TWO_ASCII_BYTES(c1, c2) \ |
767 | do { \ | |
768 | produced_chars += 2; \ | |
769 | *dst++ = (c1), *dst++ = (c2); \ | |
770 | } while (0) | |
aa72b389 KH |
771 | |
772 | ||
df7492f9 KH |
773 | /* Store a byte C in the place pointed by DST and increment DST to the |
774 | next free point, and increment PRODUCED_CHARS. If MULTIBYTEP is | |
775 | nonzero, store in an appropriate multibyte from. The caller should | |
776 | declare and set the variables `dst' and `multibytep' appropriately | |
777 | in advance. */ | |
778 | ||
779 | #define EMIT_ONE_BYTE(c) \ | |
780 | do { \ | |
781 | produced_chars++; \ | |
782 | if (multibytep) \ | |
783 | { \ | |
784 | int ch = (c); \ | |
785 | if (ch >= 0x80) \ | |
786 | ch = BYTE8_TO_CHAR (ch); \ | |
787 | CHAR_STRING_ADVANCE (ch, dst); \ | |
788 | } \ | |
789 | else \ | |
790 | *dst++ = (c); \ | |
aa72b389 | 791 | } while (0) |
aa72b389 | 792 | |
aa72b389 | 793 | |
df7492f9 | 794 | /* Like EMIT_ONE_BYTE, but emit two bytes; C1 and C2. */ |
aa72b389 | 795 | |
e19c3639 KH |
796 | #define EMIT_TWO_BYTES(c1, c2) \ |
797 | do { \ | |
798 | produced_chars += 2; \ | |
799 | if (multibytep) \ | |
800 | { \ | |
801 | int ch; \ | |
802 | \ | |
803 | ch = (c1); \ | |
804 | if (ch >= 0x80) \ | |
805 | ch = BYTE8_TO_CHAR (ch); \ | |
806 | CHAR_STRING_ADVANCE (ch, dst); \ | |
807 | ch = (c2); \ | |
808 | if (ch >= 0x80) \ | |
809 | ch = BYTE8_TO_CHAR (ch); \ | |
810 | CHAR_STRING_ADVANCE (ch, dst); \ | |
811 | } \ | |
812 | else \ | |
813 | { \ | |
814 | *dst++ = (c1); \ | |
815 | *dst++ = (c2); \ | |
816 | } \ | |
aa72b389 KH |
817 | } while (0) |
818 | ||
819 | ||
df7492f9 KH |
820 | #define EMIT_THREE_BYTES(c1, c2, c3) \ |
821 | do { \ | |
822 | EMIT_ONE_BYTE (c1); \ | |
823 | EMIT_TWO_BYTES (c2, c3); \ | |
824 | } while (0) | |
aa72b389 | 825 | |
aa72b389 | 826 | |
df7492f9 KH |
827 | #define EMIT_FOUR_BYTES(c1, c2, c3, c4) \ |
828 | do { \ | |
829 | EMIT_TWO_BYTES (c1, c2); \ | |
830 | EMIT_TWO_BYTES (c3, c4); \ | |
831 | } while (0) | |
aa72b389 | 832 | |
aa72b389 | 833 | |
f6cbaf43 KH |
834 | /* Prototypes for static functions. */ |
835 | static void record_conversion_result P_ ((struct coding_system *coding, | |
836 | enum coding_result_code result)); | |
837 | static int detect_coding_utf_8 P_ ((struct coding_system *, | |
838 | struct coding_detection_info *info)); | |
839 | static void decode_coding_utf_8 P_ ((struct coding_system *)); | |
840 | static int encode_coding_utf_8 P_ ((struct coding_system *)); | |
841 | ||
842 | static int detect_coding_utf_16 P_ ((struct coding_system *, | |
843 | struct coding_detection_info *info)); | |
844 | static void decode_coding_utf_16 P_ ((struct coding_system *)); | |
845 | static int encode_coding_utf_16 P_ ((struct coding_system *)); | |
846 | ||
847 | static int detect_coding_iso_2022 P_ ((struct coding_system *, | |
848 | struct coding_detection_info *info)); | |
849 | static void decode_coding_iso_2022 P_ ((struct coding_system *)); | |
850 | static int encode_coding_iso_2022 P_ ((struct coding_system *)); | |
851 | ||
852 | static int detect_coding_emacs_mule P_ ((struct coding_system *, | |
853 | struct coding_detection_info *info)); | |
854 | static void decode_coding_emacs_mule P_ ((struct coding_system *)); | |
855 | static int encode_coding_emacs_mule P_ ((struct coding_system *)); | |
856 | ||
857 | static int detect_coding_sjis P_ ((struct coding_system *, | |
858 | struct coding_detection_info *info)); | |
859 | static void decode_coding_sjis P_ ((struct coding_system *)); | |
860 | static int encode_coding_sjis P_ ((struct coding_system *)); | |
861 | ||
862 | static int detect_coding_big5 P_ ((struct coding_system *, | |
863 | struct coding_detection_info *info)); | |
864 | static void decode_coding_big5 P_ ((struct coding_system *)); | |
865 | static int encode_coding_big5 P_ ((struct coding_system *)); | |
866 | ||
867 | static int detect_coding_ccl P_ ((struct coding_system *, | |
868 | struct coding_detection_info *info)); | |
869 | static void decode_coding_ccl P_ ((struct coding_system *)); | |
870 | static int encode_coding_ccl P_ ((struct coding_system *)); | |
871 | ||
872 | static void decode_coding_raw_text P_ ((struct coding_system *)); | |
873 | static int encode_coding_raw_text P_ ((struct coding_system *)); | |
874 | ||
875 | static void coding_set_source P_ ((struct coding_system *)); | |
876 | static void coding_set_destination P_ ((struct coding_system *)); | |
877 | static void coding_alloc_by_realloc P_ ((struct coding_system *, EMACS_INT)); | |
878 | static void coding_alloc_by_making_gap P_ ((struct coding_system *, | |
287c57d7 | 879 | EMACS_INT, EMACS_INT)); |
f6cbaf43 KH |
880 | static unsigned char *alloc_destination P_ ((struct coding_system *, |
881 | EMACS_INT, unsigned char *)); | |
882 | static void setup_iso_safe_charsets P_ ((Lisp_Object)); | |
883 | static unsigned char *encode_designation_at_bol P_ ((struct coding_system *, | |
884 | int *, int *, | |
885 | unsigned char *)); | |
886 | static int detect_eol P_ ((const unsigned char *, | |
887 | EMACS_INT, enum coding_category)); | |
888 | static Lisp_Object adjust_coding_eol_type P_ ((struct coding_system *, int)); | |
889 | static void decode_eol P_ ((struct coding_system *)); | |
890 | static Lisp_Object get_translation_table P_ ((Lisp_Object, int, int *)); | |
891 | static Lisp_Object get_translation P_ ((Lisp_Object, int *, int *, | |
892 | int, int *, int *)); | |
893 | static int produce_chars P_ ((struct coding_system *, Lisp_Object, int)); | |
894 | static INLINE void produce_composition P_ ((struct coding_system *, int *, | |
895 | EMACS_INT)); | |
896 | static INLINE void produce_charset P_ ((struct coding_system *, int *, | |
897 | EMACS_INT)); | |
898 | static void produce_annotation P_ ((struct coding_system *, EMACS_INT)); | |
899 | static int decode_coding P_ ((struct coding_system *)); | |
900 | static INLINE int *handle_composition_annotation P_ ((EMACS_INT, EMACS_INT, | |
901 | struct coding_system *, | |
902 | int *, EMACS_INT *)); | |
903 | static INLINE int *handle_charset_annotation P_ ((EMACS_INT, EMACS_INT, | |
904 | struct coding_system *, | |
905 | int *, EMACS_INT *)); | |
906 | static void consume_chars P_ ((struct coding_system *, Lisp_Object, int)); | |
907 | static int encode_coding P_ ((struct coding_system *)); | |
908 | static Lisp_Object make_conversion_work_buffer P_ ((int)); | |
909 | static Lisp_Object code_conversion_restore P_ ((Lisp_Object)); | |
910 | static INLINE int char_encodable_p P_ ((int, Lisp_Object)); | |
911 | static Lisp_Object make_subsidiaries P_ ((Lisp_Object)); | |
912 | ||
065e3595 KH |
913 | static void |
914 | record_conversion_result (struct coding_system *coding, | |
915 | enum coding_result_code result) | |
916 | { | |
917 | coding->result = result; | |
918 | switch (result) | |
919 | { | |
920 | case CODING_RESULT_INSUFFICIENT_SRC: | |
921 | Vlast_code_conversion_error = Qinsufficient_source; | |
922 | break; | |
923 | case CODING_RESULT_INCONSISTENT_EOL: | |
924 | Vlast_code_conversion_error = Qinconsistent_eol; | |
925 | break; | |
926 | case CODING_RESULT_INVALID_SRC: | |
927 | Vlast_code_conversion_error = Qinvalid_source; | |
928 | break; | |
929 | case CODING_RESULT_INTERRUPT: | |
930 | Vlast_code_conversion_error = Qinterrupted; | |
931 | break; | |
932 | case CODING_RESULT_INSUFFICIENT_MEM: | |
933 | Vlast_code_conversion_error = Qinsufficient_memory; | |
934 | break; | |
35befdaa KH |
935 | default: |
936 | Vlast_code_conversion_error = intern ("Unknown error"); | |
065e3595 KH |
937 | } |
938 | } | |
939 | ||
df7492f9 KH |
940 | #define CODING_DECODE_CHAR(coding, src, src_base, src_end, charset, code, c) \ |
941 | do { \ | |
942 | charset_map_loaded = 0; \ | |
943 | c = DECODE_CHAR (charset, code); \ | |
944 | if (charset_map_loaded) \ | |
945 | { \ | |
8f924df7 | 946 | const unsigned char *orig = coding->source; \ |
df7492f9 KH |
947 | EMACS_INT offset; \ |
948 | \ | |
949 | coding_set_source (coding); \ | |
950 | offset = coding->source - orig; \ | |
951 | src += offset; \ | |
952 | src_base += offset; \ | |
953 | src_end += offset; \ | |
954 | } \ | |
aa72b389 KH |
955 | } while (0) |
956 | ||
957 | ||
119852e7 KH |
958 | /* If there are at least BYTES length of room at dst, allocate memory |
959 | for coding->destination and update dst and dst_end. We don't have | |
960 | to take care of coding->source which will be relocated. It is | |
961 | handled by calling coding_set_source in encode_coding. */ | |
962 | ||
df7492f9 KH |
963 | #define ASSURE_DESTINATION(bytes) \ |
964 | do { \ | |
965 | if (dst + (bytes) >= dst_end) \ | |
966 | { \ | |
967 | int more_bytes = charbuf_end - charbuf + (bytes); \ | |
968 | \ | |
969 | dst = alloc_destination (coding, more_bytes, dst); \ | |
970 | dst_end = coding->destination + coding->dst_bytes; \ | |
971 | } \ | |
972 | } while (0) | |
aa72b389 | 973 | |
aa72b389 | 974 | |
db274c7a KH |
975 | /* Store multibyte form of the character C in P, and advance P to the |
976 | end of the multibyte form. This is like CHAR_STRING_ADVANCE but it | |
977 | never calls MAYBE_UNIFY_CHAR. */ | |
978 | ||
979 | #define CHAR_STRING_ADVANCE_NO_UNIFY(c, p) \ | |
980 | do { \ | |
981 | if ((c) <= MAX_1_BYTE_CHAR) \ | |
982 | *(p)++ = (c); \ | |
983 | else if ((c) <= MAX_2_BYTE_CHAR) \ | |
984 | *(p)++ = (0xC0 | ((c) >> 6)), \ | |
985 | *(p)++ = (0x80 | ((c) & 0x3F)); \ | |
986 | else if ((c) <= MAX_3_BYTE_CHAR) \ | |
987 | *(p)++ = (0xE0 | ((c) >> 12)), \ | |
988 | *(p)++ = (0x80 | (((c) >> 6) & 0x3F)), \ | |
989 | *(p)++ = (0x80 | ((c) & 0x3F)); \ | |
990 | else if ((c) <= MAX_4_BYTE_CHAR) \ | |
991 | *(p)++ = (0xF0 | (c >> 18)), \ | |
992 | *(p)++ = (0x80 | ((c >> 12) & 0x3F)), \ | |
993 | *(p)++ = (0x80 | ((c >> 6) & 0x3F)), \ | |
994 | *(p)++ = (0x80 | (c & 0x3F)); \ | |
995 | else if ((c) <= MAX_5_BYTE_CHAR) \ | |
996 | *(p)++ = 0xF8, \ | |
997 | *(p)++ = (0x80 | ((c >> 18) & 0x0F)), \ | |
998 | *(p)++ = (0x80 | ((c >> 12) & 0x3F)), \ | |
999 | *(p)++ = (0x80 | ((c >> 6) & 0x3F)), \ | |
1000 | *(p)++ = (0x80 | (c & 0x3F)); \ | |
1001 | else \ | |
1002 | (p) += BYTE8_STRING ((c) - 0x3FFF80, p); \ | |
1003 | } while (0) | |
1004 | ||
1005 | ||
1006 | /* Return the character code of character whose multibyte form is at | |
1007 | P, and advance P to the end of the multibyte form. This is like | |
1008 | STRING_CHAR_ADVANCE, but it never calls MAYBE_UNIFY_CHAR. */ | |
1009 | ||
1010 | #define STRING_CHAR_ADVANCE_NO_UNIFY(p) \ | |
1011 | (!((p)[0] & 0x80) \ | |
1012 | ? *(p)++ \ | |
1013 | : ! ((p)[0] & 0x20) \ | |
1014 | ? ((p) += 2, \ | |
1015 | ((((p)[-2] & 0x1F) << 6) \ | |
1016 | | ((p)[-1] & 0x3F) \ | |
1017 | | ((unsigned char) ((p)[-2]) < 0xC2 ? 0x3FFF80 : 0))) \ | |
1018 | : ! ((p)[0] & 0x10) \ | |
1019 | ? ((p) += 3, \ | |
1020 | ((((p)[-3] & 0x0F) << 12) \ | |
1021 | | (((p)[-2] & 0x3F) << 6) \ | |
1022 | | ((p)[-1] & 0x3F))) \ | |
1023 | : ! ((p)[0] & 0x08) \ | |
1024 | ? ((p) += 4, \ | |
1025 | ((((p)[-4] & 0xF) << 18) \ | |
1026 | | (((p)[-3] & 0x3F) << 12) \ | |
1027 | | (((p)[-2] & 0x3F) << 6) \ | |
1028 | | ((p)[-1] & 0x3F))) \ | |
1029 | : ((p) += 5, \ | |
1030 | ((((p)[-4] & 0x3F) << 18) \ | |
1031 | | (((p)[-3] & 0x3F) << 12) \ | |
1032 | | (((p)[-2] & 0x3F) << 6) \ | |
1033 | | ((p)[-1] & 0x3F)))) | |
1034 | ||
aa72b389 | 1035 | |
df7492f9 KH |
1036 | static void |
1037 | coding_set_source (coding) | |
aa72b389 | 1038 | struct coding_system *coding; |
aa72b389 | 1039 | { |
df7492f9 KH |
1040 | if (BUFFERP (coding->src_object)) |
1041 | { | |
2cb26057 | 1042 | struct buffer *buf = XBUFFER (coding->src_object); |
aa72b389 | 1043 | |
df7492f9 | 1044 | if (coding->src_pos < 0) |
2cb26057 | 1045 | coding->source = BUF_GAP_END_ADDR (buf) + coding->src_pos_byte; |
df7492f9 | 1046 | else |
2cb26057 | 1047 | coding->source = BUF_BYTE_ADDRESS (buf, coding->src_pos_byte); |
aa72b389 | 1048 | } |
df7492f9 | 1049 | else if (STRINGP (coding->src_object)) |
aa72b389 | 1050 | { |
8f924df7 | 1051 | coding->source = SDATA (coding->src_object) + coding->src_pos_byte; |
aa72b389 | 1052 | } |
df7492f9 KH |
1053 | else |
1054 | /* Otherwise, the source is C string and is never relocated | |
1055 | automatically. Thus we don't have to update anything. */ | |
1056 | ; | |
1057 | } | |
aa72b389 | 1058 | |
df7492f9 KH |
1059 | static void |
1060 | coding_set_destination (coding) | |
1061 | struct coding_system *coding; | |
1062 | { | |
1063 | if (BUFFERP (coding->dst_object)) | |
aa72b389 | 1064 | { |
df7492f9 | 1065 | if (coding->src_pos < 0) |
aa72b389 | 1066 | { |
13818c30 | 1067 | coding->destination = BEG_ADDR + coding->dst_pos_byte - BEG_BYTE; |
28f67a95 KH |
1068 | coding->dst_bytes = (GAP_END_ADDR |
1069 | - (coding->src_bytes - coding->consumed) | |
1070 | - coding->destination); | |
aa72b389 | 1071 | } |
df7492f9 | 1072 | else |
28f67a95 KH |
1073 | { |
1074 | /* We are sure that coding->dst_pos_byte is before the gap | |
1075 | of the buffer. */ | |
1076 | coding->destination = (BUF_BEG_ADDR (XBUFFER (coding->dst_object)) | |
13818c30 | 1077 | + coding->dst_pos_byte - BEG_BYTE); |
28f67a95 KH |
1078 | coding->dst_bytes = (BUF_GAP_END_ADDR (XBUFFER (coding->dst_object)) |
1079 | - coding->destination); | |
1080 | } | |
df7492f9 KH |
1081 | } |
1082 | else | |
1083 | /* Otherwise, the destination is C string and is never relocated | |
1084 | automatically. Thus we don't have to update anything. */ | |
1085 | ; | |
1086 | } | |
1087 | ||
1088 | ||
1089 | static void | |
1090 | coding_alloc_by_realloc (coding, bytes) | |
1091 | struct coding_system *coding; | |
1092 | EMACS_INT bytes; | |
1093 | { | |
1094 | coding->destination = (unsigned char *) xrealloc (coding->destination, | |
1095 | coding->dst_bytes + bytes); | |
1096 | coding->dst_bytes += bytes; | |
1097 | } | |
1098 | ||
1099 | static void | |
db274c7a | 1100 | coding_alloc_by_making_gap (coding, gap_head_used, bytes) |
df7492f9 | 1101 | struct coding_system *coding; |
db274c7a | 1102 | EMACS_INT gap_head_used, bytes; |
df7492f9 | 1103 | { |
db274c7a | 1104 | if (EQ (coding->src_object, coding->dst_object)) |
df7492f9 | 1105 | { |
db274c7a KH |
1106 | /* The gap may contain the produced data at the head and not-yet |
1107 | consumed data at the tail. To preserve those data, we at | |
1108 | first make the gap size to zero, then increase the gap | |
1109 | size. */ | |
1110 | EMACS_INT add = GAP_SIZE; | |
1111 | ||
1112 | GPT += gap_head_used, GPT_BYTE += gap_head_used; | |
1113 | GAP_SIZE = 0; ZV += add; Z += add; ZV_BYTE += add; Z_BYTE += add; | |
df7492f9 KH |
1114 | make_gap (bytes); |
1115 | GAP_SIZE += add; ZV -= add; Z -= add; ZV_BYTE -= add; Z_BYTE -= add; | |
db274c7a | 1116 | GPT -= gap_head_used, GPT_BYTE -= gap_head_used; |
df7492f9 | 1117 | } |
730fff51 | 1118 | else |
df7492f9 | 1119 | { |
2c78b7e1 KH |
1120 | Lisp_Object this_buffer; |
1121 | ||
1122 | this_buffer = Fcurrent_buffer (); | |
df7492f9 KH |
1123 | set_buffer_internal (XBUFFER (coding->dst_object)); |
1124 | make_gap (bytes); | |
1125 | set_buffer_internal (XBUFFER (this_buffer)); | |
aa72b389 | 1126 | } |
df7492f9 | 1127 | } |
8f924df7 | 1128 | |
df7492f9 KH |
1129 | |
1130 | static unsigned char * | |
1131 | alloc_destination (coding, nbytes, dst) | |
1132 | struct coding_system *coding; | |
3e139625 | 1133 | EMACS_INT nbytes; |
df7492f9 KH |
1134 | unsigned char *dst; |
1135 | { | |
1136 | EMACS_INT offset = dst - coding->destination; | |
1137 | ||
1138 | if (BUFFERP (coding->dst_object)) | |
db274c7a KH |
1139 | { |
1140 | struct buffer *buf = XBUFFER (coding->dst_object); | |
1141 | ||
1142 | coding_alloc_by_making_gap (coding, dst - BUF_GPT_ADDR (buf), nbytes); | |
1143 | } | |
aa72b389 | 1144 | else |
df7492f9 | 1145 | coding_alloc_by_realloc (coding, nbytes); |
065e3595 | 1146 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
1147 | coding_set_destination (coding); |
1148 | dst = coding->destination + offset; | |
1149 | return dst; | |
1150 | } | |
aa72b389 | 1151 | |
ff0dacd7 KH |
1152 | /** Macros for annotations. */ |
1153 | ||
1154 | /* Maximum length of annotation data (sum of annotations for | |
1155 | composition and charset). */ | |
69a80ea3 | 1156 | #define MAX_ANNOTATION_LENGTH (4 + (MAX_COMPOSITION_COMPONENTS * 2) - 1 + 4) |
ff0dacd7 KH |
1157 | |
1158 | /* An annotation data is stored in the array coding->charbuf in this | |
1159 | format: | |
69a80ea3 | 1160 | [ -LENGTH ANNOTATION_MASK NCHARS ... ] |
ff0dacd7 KH |
1161 | LENGTH is the number of elements in the annotation. |
1162 | ANNOTATION_MASK is one of CODING_ANNOTATE_XXX_MASK. | |
69a80ea3 | 1163 | NCHARS is the number of characters in the text annotated. |
ff0dacd7 KH |
1164 | |
1165 | The format of the following elements depend on ANNOTATION_MASK. | |
1166 | ||
1167 | In the case of CODING_ANNOTATE_COMPOSITION_MASK, these elements | |
1168 | follows: | |
1169 | ... METHOD [ COMPOSITION-COMPONENTS ... ] | |
1170 | METHOD is one of enum composition_method. | |
1171 | Optionnal COMPOSITION-COMPONENTS are characters and composition | |
1172 | rules. | |
1173 | ||
1174 | In the case of CODING_ANNOTATE_CHARSET_MASK, one element CHARSET-ID | |
1175 | follows. */ | |
1176 | ||
69a80ea3 | 1177 | #define ADD_ANNOTATION_DATA(buf, len, mask, nchars) \ |
ff0dacd7 KH |
1178 | do { \ |
1179 | *(buf)++ = -(len); \ | |
1180 | *(buf)++ = (mask); \ | |
69a80ea3 | 1181 | *(buf)++ = (nchars); \ |
ff0dacd7 KH |
1182 | coding->annotated = 1; \ |
1183 | } while (0); | |
1184 | ||
69a80ea3 KH |
1185 | #define ADD_COMPOSITION_DATA(buf, nchars, method) \ |
1186 | do { \ | |
1187 | ADD_ANNOTATION_DATA (buf, 4, CODING_ANNOTATE_COMPOSITION_MASK, nchars); \ | |
1188 | *buf++ = method; \ | |
ff0dacd7 KH |
1189 | } while (0) |
1190 | ||
1191 | ||
69a80ea3 KH |
1192 | #define ADD_CHARSET_DATA(buf, nchars, id) \ |
1193 | do { \ | |
1194 | ADD_ANNOTATION_DATA (buf, 4, CODING_ANNOTATE_CHARSET_MASK, nchars); \ | |
1195 | *buf++ = id; \ | |
ff0dacd7 KH |
1196 | } while (0) |
1197 | ||
df7492f9 KH |
1198 | \f |
1199 | /*** 2. Emacs' internal format (emacs-utf-8) ***/ | |
1200 | ||
1201 | ||
1202 | ||
1203 | \f | |
1204 | /*** 3. UTF-8 ***/ | |
1205 | ||
1206 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
ff0dacd7 KH |
1207 | Check if a text is encoded in UTF-8. If it is, return 1, else |
1208 | return 0. */ | |
df7492f9 KH |
1209 | |
1210 | #define UTF_8_1_OCTET_P(c) ((c) < 0x80) | |
1211 | #define UTF_8_EXTRA_OCTET_P(c) (((c) & 0xC0) == 0x80) | |
1212 | #define UTF_8_2_OCTET_LEADING_P(c) (((c) & 0xE0) == 0xC0) | |
1213 | #define UTF_8_3_OCTET_LEADING_P(c) (((c) & 0xF0) == 0xE0) | |
1214 | #define UTF_8_4_OCTET_LEADING_P(c) (((c) & 0xF8) == 0xF0) | |
1215 | #define UTF_8_5_OCTET_LEADING_P(c) (((c) & 0xFC) == 0xF8) | |
1216 | ||
1217 | static int | |
ff0dacd7 | 1218 | detect_coding_utf_8 (coding, detect_info) |
df7492f9 | 1219 | struct coding_system *coding; |
ff0dacd7 | 1220 | struct coding_detection_info *detect_info; |
df7492f9 | 1221 | { |
065e3595 | 1222 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 1223 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
1224 | int multibytep = coding->src_multibyte; |
1225 | int consumed_chars = 0; | |
1226 | int found = 0; | |
1227 | ||
ff0dacd7 | 1228 | detect_info->checked |= CATEGORY_MASK_UTF_8; |
df7492f9 KH |
1229 | /* A coding system of this category is always ASCII compatible. */ |
1230 | src += coding->head_ascii; | |
1231 | ||
1232 | while (1) | |
aa72b389 | 1233 | { |
df7492f9 | 1234 | int c, c1, c2, c3, c4; |
aa72b389 | 1235 | |
065e3595 | 1236 | src_base = src; |
df7492f9 | 1237 | ONE_MORE_BYTE (c); |
065e3595 | 1238 | if (c < 0 || UTF_8_1_OCTET_P (c)) |
df7492f9 KH |
1239 | continue; |
1240 | ONE_MORE_BYTE (c1); | |
065e3595 | 1241 | if (c1 < 0 || ! UTF_8_EXTRA_OCTET_P (c1)) |
df7492f9 KH |
1242 | break; |
1243 | if (UTF_8_2_OCTET_LEADING_P (c)) | |
aa72b389 | 1244 | { |
ff0dacd7 | 1245 | found = CATEGORY_MASK_UTF_8; |
df7492f9 | 1246 | continue; |
aa72b389 | 1247 | } |
df7492f9 | 1248 | ONE_MORE_BYTE (c2); |
065e3595 | 1249 | if (c2 < 0 || ! UTF_8_EXTRA_OCTET_P (c2)) |
df7492f9 KH |
1250 | break; |
1251 | if (UTF_8_3_OCTET_LEADING_P (c)) | |
aa72b389 | 1252 | { |
ff0dacd7 | 1253 | found = CATEGORY_MASK_UTF_8; |
df7492f9 | 1254 | continue; |
aa72b389 | 1255 | } |
df7492f9 | 1256 | ONE_MORE_BYTE (c3); |
065e3595 | 1257 | if (c3 < 0 || ! UTF_8_EXTRA_OCTET_P (c3)) |
df7492f9 KH |
1258 | break; |
1259 | if (UTF_8_4_OCTET_LEADING_P (c)) | |
aa72b389 | 1260 | { |
ff0dacd7 | 1261 | found = CATEGORY_MASK_UTF_8; |
df7492f9 KH |
1262 | continue; |
1263 | } | |
1264 | ONE_MORE_BYTE (c4); | |
065e3595 | 1265 | if (c4 < 0 || ! UTF_8_EXTRA_OCTET_P (c4)) |
df7492f9 KH |
1266 | break; |
1267 | if (UTF_8_5_OCTET_LEADING_P (c)) | |
1268 | { | |
ff0dacd7 | 1269 | found = CATEGORY_MASK_UTF_8; |
df7492f9 KH |
1270 | continue; |
1271 | } | |
1272 | break; | |
aa72b389 | 1273 | } |
ff0dacd7 | 1274 | detect_info->rejected |= CATEGORY_MASK_UTF_8; |
df7492f9 | 1275 | return 0; |
aa72b389 | 1276 | |
df7492f9 | 1277 | no_more_source: |
065e3595 | 1278 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
aa72b389 | 1279 | { |
ff0dacd7 | 1280 | detect_info->rejected |= CATEGORY_MASK_UTF_8; |
89528eb3 | 1281 | return 0; |
aa72b389 | 1282 | } |
ff0dacd7 KH |
1283 | detect_info->found |= found; |
1284 | return 1; | |
aa72b389 KH |
1285 | } |
1286 | ||
4ed46869 | 1287 | |
b73bfc1c | 1288 | static void |
df7492f9 | 1289 | decode_coding_utf_8 (coding) |
b73bfc1c | 1290 | struct coding_system *coding; |
b73bfc1c | 1291 | { |
8f924df7 KH |
1292 | const unsigned char *src = coding->source + coding->consumed; |
1293 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
1294 | const unsigned char *src_base; | |
69a80ea3 KH |
1295 | int *charbuf = coding->charbuf + coding->charbuf_used; |
1296 | int *charbuf_end = coding->charbuf + coding->charbuf_size; | |
df7492f9 KH |
1297 | int consumed_chars = 0, consumed_chars_base; |
1298 | int multibytep = coding->src_multibyte; | |
24a73b0a | 1299 | Lisp_Object attr, charset_list; |
119852e7 KH |
1300 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
1301 | int byte_after_cr = -1; | |
4ed46869 | 1302 | |
24a73b0a | 1303 | CODING_GET_INFO (coding, attr, charset_list); |
df7492f9 KH |
1304 | |
1305 | while (1) | |
b73bfc1c | 1306 | { |
df7492f9 | 1307 | int c, c1, c2, c3, c4, c5; |
ec6d2bb8 | 1308 | |
df7492f9 KH |
1309 | src_base = src; |
1310 | consumed_chars_base = consumed_chars; | |
4af310db | 1311 | |
df7492f9 KH |
1312 | if (charbuf >= charbuf_end) |
1313 | break; | |
1314 | ||
119852e7 KH |
1315 | if (byte_after_cr >= 0) |
1316 | c1 = byte_after_cr, byte_after_cr = -1; | |
1317 | else | |
1318 | ONE_MORE_BYTE (c1); | |
065e3595 KH |
1319 | if (c1 < 0) |
1320 | { | |
1321 | c = - c1; | |
1322 | } | |
1323 | else if (UTF_8_1_OCTET_P(c1)) | |
df7492f9 | 1324 | { |
119852e7 KH |
1325 | if (eol_crlf && c1 == '\r') |
1326 | ONE_MORE_BYTE (byte_after_cr); | |
df7492f9 | 1327 | c = c1; |
4af310db | 1328 | } |
df7492f9 | 1329 | else |
4af310db | 1330 | { |
df7492f9 | 1331 | ONE_MORE_BYTE (c2); |
065e3595 | 1332 | if (c2 < 0 || ! UTF_8_EXTRA_OCTET_P (c2)) |
df7492f9 KH |
1333 | goto invalid_code; |
1334 | if (UTF_8_2_OCTET_LEADING_P (c1)) | |
4af310db | 1335 | { |
b0edb2c5 DL |
1336 | c = ((c1 & 0x1F) << 6) | (c2 & 0x3F); |
1337 | /* Reject overlong sequences here and below. Encoders | |
1338 | producing them are incorrect, they can be misleading, | |
1339 | and they mess up read/write invariance. */ | |
1340 | if (c < 128) | |
1341 | goto invalid_code; | |
4af310db | 1342 | } |
df7492f9 | 1343 | else |
aa72b389 | 1344 | { |
df7492f9 | 1345 | ONE_MORE_BYTE (c3); |
065e3595 | 1346 | if (c3 < 0 || ! UTF_8_EXTRA_OCTET_P (c3)) |
df7492f9 KH |
1347 | goto invalid_code; |
1348 | if (UTF_8_3_OCTET_LEADING_P (c1)) | |
b0edb2c5 DL |
1349 | { |
1350 | c = (((c1 & 0xF) << 12) | |
1351 | | ((c2 & 0x3F) << 6) | (c3 & 0x3F)); | |
72fe1301 DL |
1352 | if (c < 0x800 |
1353 | || (c >= 0xd800 && c < 0xe000)) /* surrogates (invalid) */ | |
b0edb2c5 DL |
1354 | goto invalid_code; |
1355 | } | |
df7492f9 KH |
1356 | else |
1357 | { | |
1358 | ONE_MORE_BYTE (c4); | |
065e3595 | 1359 | if (c4 < 0 || ! UTF_8_EXTRA_OCTET_P (c4)) |
df7492f9 KH |
1360 | goto invalid_code; |
1361 | if (UTF_8_4_OCTET_LEADING_P (c1)) | |
b0edb2c5 | 1362 | { |
df7492f9 KH |
1363 | c = (((c1 & 0x7) << 18) | ((c2 & 0x3F) << 12) |
1364 | | ((c3 & 0x3F) << 6) | (c4 & 0x3F)); | |
b0edb2c5 DL |
1365 | if (c < 0x10000) |
1366 | goto invalid_code; | |
1367 | } | |
df7492f9 KH |
1368 | else |
1369 | { | |
1370 | ONE_MORE_BYTE (c5); | |
065e3595 | 1371 | if (c5 < 0 || ! UTF_8_EXTRA_OCTET_P (c5)) |
df7492f9 KH |
1372 | goto invalid_code; |
1373 | if (UTF_8_5_OCTET_LEADING_P (c1)) | |
1374 | { | |
1375 | c = (((c1 & 0x3) << 24) | ((c2 & 0x3F) << 18) | |
1376 | | ((c3 & 0x3F) << 12) | ((c4 & 0x3F) << 6) | |
1377 | | (c5 & 0x3F)); | |
b0edb2c5 | 1378 | if ((c > MAX_CHAR) || (c < 0x200000)) |
df7492f9 KH |
1379 | goto invalid_code; |
1380 | } | |
1381 | else | |
1382 | goto invalid_code; | |
1383 | } | |
1384 | } | |
aa72b389 | 1385 | } |
b73bfc1c | 1386 | } |
df7492f9 KH |
1387 | |
1388 | *charbuf++ = c; | |
1389 | continue; | |
1390 | ||
1391 | invalid_code: | |
1392 | src = src_base; | |
1393 | consumed_chars = consumed_chars_base; | |
1394 | ONE_MORE_BYTE (c); | |
1395 | *charbuf++ = ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); | |
1396 | coding->errors++; | |
aa72b389 KH |
1397 | } |
1398 | ||
df7492f9 KH |
1399 | no_more_source: |
1400 | coding->consumed_char += consumed_chars_base; | |
1401 | coding->consumed = src_base - coding->source; | |
1402 | coding->charbuf_used = charbuf - coding->charbuf; | |
1403 | } | |
1404 | ||
1405 | ||
1406 | static int | |
1407 | encode_coding_utf_8 (coding) | |
1408 | struct coding_system *coding; | |
1409 | { | |
1410 | int multibytep = coding->dst_multibyte; | |
1411 | int *charbuf = coding->charbuf; | |
1412 | int *charbuf_end = charbuf + coding->charbuf_used; | |
1413 | unsigned char *dst = coding->destination + coding->produced; | |
1414 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
e19c3639 | 1415 | int produced_chars = 0; |
df7492f9 KH |
1416 | int c; |
1417 | ||
1418 | if (multibytep) | |
aa72b389 | 1419 | { |
df7492f9 KH |
1420 | int safe_room = MAX_MULTIBYTE_LENGTH * 2; |
1421 | ||
1422 | while (charbuf < charbuf_end) | |
b73bfc1c | 1423 | { |
df7492f9 | 1424 | unsigned char str[MAX_MULTIBYTE_LENGTH], *p, *pend = str; |
8f924df7 | 1425 | |
df7492f9 KH |
1426 | ASSURE_DESTINATION (safe_room); |
1427 | c = *charbuf++; | |
28f67a95 KH |
1428 | if (CHAR_BYTE8_P (c)) |
1429 | { | |
1430 | c = CHAR_TO_BYTE8 (c); | |
1431 | EMIT_ONE_BYTE (c); | |
1432 | } | |
1433 | else | |
1434 | { | |
db274c7a | 1435 | CHAR_STRING_ADVANCE_NO_UNIFY (c, pend); |
28f67a95 KH |
1436 | for (p = str; p < pend; p++) |
1437 | EMIT_ONE_BYTE (*p); | |
1438 | } | |
b73bfc1c | 1439 | } |
aa72b389 | 1440 | } |
df7492f9 KH |
1441 | else |
1442 | { | |
1443 | int safe_room = MAX_MULTIBYTE_LENGTH; | |
1444 | ||
1445 | while (charbuf < charbuf_end) | |
b73bfc1c | 1446 | { |
df7492f9 KH |
1447 | ASSURE_DESTINATION (safe_room); |
1448 | c = *charbuf++; | |
f03caae0 KH |
1449 | if (CHAR_BYTE8_P (c)) |
1450 | *dst++ = CHAR_TO_BYTE8 (c); | |
1451 | else | |
db274c7a | 1452 | CHAR_STRING_ADVANCE_NO_UNIFY (c, dst); |
df7492f9 | 1453 | produced_chars++; |
4ed46869 KH |
1454 | } |
1455 | } | |
065e3595 | 1456 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
1457 | coding->produced_char += produced_chars; |
1458 | coding->produced = dst - coding->destination; | |
1459 | return 0; | |
4ed46869 KH |
1460 | } |
1461 | ||
b73bfc1c | 1462 | |
df7492f9 | 1463 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". |
ff0dacd7 KH |
1464 | Check if a text is encoded in one of UTF-16 based coding systems. |
1465 | If it is, return 1, else return 0. */ | |
aa72b389 | 1466 | |
df7492f9 KH |
1467 | #define UTF_16_HIGH_SURROGATE_P(val) \ |
1468 | (((val) & 0xFC00) == 0xD800) | |
1469 | ||
1470 | #define UTF_16_LOW_SURROGATE_P(val) \ | |
1471 | (((val) & 0xFC00) == 0xDC00) | |
93dec019 | 1472 | |
df7492f9 KH |
1473 | #define UTF_16_INVALID_P(val) \ |
1474 | (((val) == 0xFFFE) \ | |
1475 | || ((val) == 0xFFFF) \ | |
1476 | || UTF_16_LOW_SURROGATE_P (val)) | |
aa72b389 | 1477 | |
aa72b389 | 1478 | |
df7492f9 | 1479 | static int |
ff0dacd7 | 1480 | detect_coding_utf_16 (coding, detect_info) |
aa72b389 | 1481 | struct coding_system *coding; |
ff0dacd7 | 1482 | struct coding_detection_info *detect_info; |
aa72b389 | 1483 | { |
8f924df7 KH |
1484 | const unsigned char *src = coding->source, *src_base = src; |
1485 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
df7492f9 KH |
1486 | int multibytep = coding->src_multibyte; |
1487 | int consumed_chars = 0; | |
1488 | int c1, c2; | |
aa72b389 | 1489 | |
ff0dacd7 | 1490 | detect_info->checked |= CATEGORY_MASK_UTF_16; |
ff0dacd7 | 1491 | if (coding->mode & CODING_MODE_LAST_BLOCK |
24a73b0a | 1492 | && (coding->src_chars & 1)) |
ff0dacd7 KH |
1493 | { |
1494 | detect_info->rejected |= CATEGORY_MASK_UTF_16; | |
1495 | return 0; | |
1496 | } | |
24a73b0a | 1497 | |
df7492f9 KH |
1498 | ONE_MORE_BYTE (c1); |
1499 | ONE_MORE_BYTE (c2); | |
df7492f9 | 1500 | if ((c1 == 0xFF) && (c2 == 0xFE)) |
aa72b389 | 1501 | { |
b49a1807 KH |
1502 | detect_info->found |= (CATEGORY_MASK_UTF_16_LE |
1503 | | CATEGORY_MASK_UTF_16_AUTO); | |
24a73b0a KH |
1504 | detect_info->rejected |= (CATEGORY_MASK_UTF_16_BE |
1505 | | CATEGORY_MASK_UTF_16_BE_NOSIG | |
1506 | | CATEGORY_MASK_UTF_16_LE_NOSIG); | |
aa72b389 | 1507 | } |
df7492f9 | 1508 | else if ((c1 == 0xFE) && (c2 == 0xFF)) |
ff0dacd7 | 1509 | { |
b49a1807 KH |
1510 | detect_info->found |= (CATEGORY_MASK_UTF_16_BE |
1511 | | CATEGORY_MASK_UTF_16_AUTO); | |
24a73b0a KH |
1512 | detect_info->rejected |= (CATEGORY_MASK_UTF_16_LE |
1513 | | CATEGORY_MASK_UTF_16_BE_NOSIG | |
1514 | | CATEGORY_MASK_UTF_16_LE_NOSIG); | |
1515 | } | |
065e3595 | 1516 | else if (c1 >= 0 && c2 >= 0) |
24a73b0a | 1517 | { |
24a73b0a KH |
1518 | detect_info->rejected |
1519 | |= (CATEGORY_MASK_UTF_16_BE | CATEGORY_MASK_UTF_16_LE); | |
ff0dacd7 | 1520 | } |
df7492f9 | 1521 | no_more_source: |
ff0dacd7 | 1522 | return 1; |
df7492f9 | 1523 | } |
aa72b389 | 1524 | |
df7492f9 KH |
1525 | static void |
1526 | decode_coding_utf_16 (coding) | |
1527 | struct coding_system *coding; | |
1528 | { | |
8f924df7 KH |
1529 | const unsigned char *src = coding->source + coding->consumed; |
1530 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
1531 | const unsigned char *src_base; | |
69a80ea3 KH |
1532 | int *charbuf = coding->charbuf + coding->charbuf_used; |
1533 | int *charbuf_end = coding->charbuf + coding->charbuf_size; | |
df7492f9 KH |
1534 | int consumed_chars = 0, consumed_chars_base; |
1535 | int multibytep = coding->src_multibyte; | |
1536 | enum utf_16_bom_type bom = CODING_UTF_16_BOM (coding); | |
1537 | enum utf_16_endian_type endian = CODING_UTF_16_ENDIAN (coding); | |
1538 | int surrogate = CODING_UTF_16_SURROGATE (coding); | |
24a73b0a | 1539 | Lisp_Object attr, charset_list; |
119852e7 KH |
1540 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
1541 | int byte_after_cr1 = -1, byte_after_cr2 = -1; | |
df7492f9 | 1542 | |
24a73b0a | 1543 | CODING_GET_INFO (coding, attr, charset_list); |
df7492f9 | 1544 | |
b49a1807 | 1545 | if (bom == utf_16_with_bom) |
aa72b389 | 1546 | { |
df7492f9 | 1547 | int c, c1, c2; |
4af310db | 1548 | |
aa72b389 | 1549 | src_base = src; |
df7492f9 KH |
1550 | ONE_MORE_BYTE (c1); |
1551 | ONE_MORE_BYTE (c2); | |
e19c3639 | 1552 | c = (c1 << 8) | c2; |
aa72b389 | 1553 | |
b49a1807 KH |
1554 | if (endian == utf_16_big_endian |
1555 | ? c != 0xFEFF : c != 0xFFFE) | |
aa72b389 | 1556 | { |
b49a1807 KH |
1557 | /* The first two bytes are not BOM. Treat them as bytes |
1558 | for a normal character. */ | |
1559 | src = src_base; | |
1560 | coding->errors++; | |
aa72b389 | 1561 | } |
b49a1807 KH |
1562 | CODING_UTF_16_BOM (coding) = utf_16_without_bom; |
1563 | } | |
1564 | else if (bom == utf_16_detect_bom) | |
1565 | { | |
1566 | /* We have already tried to detect BOM and failed in | |
1567 | detect_coding. */ | |
1568 | CODING_UTF_16_BOM (coding) = utf_16_without_bom; | |
df7492f9 | 1569 | } |
aa72b389 | 1570 | |
df7492f9 KH |
1571 | while (1) |
1572 | { | |
1573 | int c, c1, c2; | |
1574 | ||
1575 | src_base = src; | |
1576 | consumed_chars_base = consumed_chars; | |
1577 | ||
1578 | if (charbuf + 2 >= charbuf_end) | |
1579 | break; | |
1580 | ||
119852e7 KH |
1581 | if (byte_after_cr1 >= 0) |
1582 | c1 = byte_after_cr1, byte_after_cr1 = -1; | |
1583 | else | |
1584 | ONE_MORE_BYTE (c1); | |
065e3595 KH |
1585 | if (c1 < 0) |
1586 | { | |
1587 | *charbuf++ = -c1; | |
1588 | continue; | |
1589 | } | |
119852e7 KH |
1590 | if (byte_after_cr2 >= 0) |
1591 | c2 = byte_after_cr2, byte_after_cr2 = -1; | |
1592 | else | |
1593 | ONE_MORE_BYTE (c2); | |
065e3595 KH |
1594 | if (c2 < 0) |
1595 | { | |
1596 | *charbuf++ = ASCII_BYTE_P (c1) ? c1 : BYTE8_TO_CHAR (c1); | |
1597 | *charbuf++ = -c2; | |
1598 | continue; | |
1599 | } | |
df7492f9 | 1600 | c = (endian == utf_16_big_endian |
e19c3639 | 1601 | ? ((c1 << 8) | c2) : ((c2 << 8) | c1)); |
119852e7 | 1602 | |
df7492f9 | 1603 | if (surrogate) |
fd3ae0b9 | 1604 | { |
df7492f9 | 1605 | if (! UTF_16_LOW_SURROGATE_P (c)) |
fd3ae0b9 | 1606 | { |
df7492f9 KH |
1607 | if (endian == utf_16_big_endian) |
1608 | c1 = surrogate >> 8, c2 = surrogate & 0xFF; | |
1609 | else | |
1610 | c1 = surrogate & 0xFF, c2 = surrogate >> 8; | |
1611 | *charbuf++ = c1; | |
1612 | *charbuf++ = c2; | |
1613 | coding->errors++; | |
1614 | if (UTF_16_HIGH_SURROGATE_P (c)) | |
1615 | CODING_UTF_16_SURROGATE (coding) = surrogate = c; | |
fd3ae0b9 | 1616 | else |
df7492f9 | 1617 | *charbuf++ = c; |
fd3ae0b9 KH |
1618 | } |
1619 | else | |
df7492f9 KH |
1620 | { |
1621 | c = ((surrogate - 0xD800) << 10) | (c - 0xDC00); | |
1622 | CODING_UTF_16_SURROGATE (coding) = surrogate = 0; | |
29f7ffd0 | 1623 | *charbuf++ = 0x10000 + c; |
df7492f9 | 1624 | } |
fd3ae0b9 | 1625 | } |
aa72b389 | 1626 | else |
df7492f9 KH |
1627 | { |
1628 | if (UTF_16_HIGH_SURROGATE_P (c)) | |
1629 | CODING_UTF_16_SURROGATE (coding) = surrogate = c; | |
1630 | else | |
119852e7 KH |
1631 | { |
1632 | if (eol_crlf && c == '\r') | |
1633 | { | |
1634 | ONE_MORE_BYTE (byte_after_cr1); | |
1635 | ONE_MORE_BYTE (byte_after_cr2); | |
1636 | } | |
1637 | *charbuf++ = c; | |
1638 | } | |
8f924df7 | 1639 | } |
aa72b389 | 1640 | } |
df7492f9 KH |
1641 | |
1642 | no_more_source: | |
1643 | coding->consumed_char += consumed_chars_base; | |
1644 | coding->consumed = src_base - coding->source; | |
1645 | coding->charbuf_used = charbuf - coding->charbuf; | |
aa72b389 | 1646 | } |
b73bfc1c | 1647 | |
df7492f9 KH |
1648 | static int |
1649 | encode_coding_utf_16 (coding) | |
1650 | struct coding_system *coding; | |
1651 | { | |
1652 | int multibytep = coding->dst_multibyte; | |
1653 | int *charbuf = coding->charbuf; | |
1654 | int *charbuf_end = charbuf + coding->charbuf_used; | |
1655 | unsigned char *dst = coding->destination + coding->produced; | |
1656 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
1657 | int safe_room = 8; | |
1658 | enum utf_16_bom_type bom = CODING_UTF_16_BOM (coding); | |
1659 | int big_endian = CODING_UTF_16_ENDIAN (coding) == utf_16_big_endian; | |
1660 | int produced_chars = 0; | |
24a73b0a | 1661 | Lisp_Object attrs, charset_list; |
df7492f9 | 1662 | int c; |
4ed46869 | 1663 | |
24a73b0a | 1664 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 | 1665 | |
b49a1807 | 1666 | if (bom != utf_16_without_bom) |
df7492f9 KH |
1667 | { |
1668 | ASSURE_DESTINATION (safe_room); | |
1669 | if (big_endian) | |
df7492f9 | 1670 | EMIT_TWO_BYTES (0xFE, 0xFF); |
880cf180 KH |
1671 | else |
1672 | EMIT_TWO_BYTES (0xFF, 0xFE); | |
df7492f9 KH |
1673 | CODING_UTF_16_BOM (coding) = utf_16_without_bom; |
1674 | } | |
1675 | ||
1676 | while (charbuf < charbuf_end) | |
1677 | { | |
1678 | ASSURE_DESTINATION (safe_room); | |
1679 | c = *charbuf++; | |
e19c3639 KH |
1680 | if (c >= MAX_UNICODE_CHAR) |
1681 | c = coding->default_char; | |
df7492f9 KH |
1682 | |
1683 | if (c < 0x10000) | |
1684 | { | |
1685 | if (big_endian) | |
1686 | EMIT_TWO_BYTES (c >> 8, c & 0xFF); | |
1687 | else | |
1688 | EMIT_TWO_BYTES (c & 0xFF, c >> 8); | |
1689 | } | |
1690 | else | |
1691 | { | |
1692 | int c1, c2; | |
1693 | ||
1694 | c -= 0x10000; | |
1695 | c1 = (c >> 10) + 0xD800; | |
1696 | c2 = (c & 0x3FF) + 0xDC00; | |
1697 | if (big_endian) | |
1698 | EMIT_FOUR_BYTES (c1 >> 8, c1 & 0xFF, c2 >> 8, c2 & 0xFF); | |
1699 | else | |
1700 | EMIT_FOUR_BYTES (c1 & 0xFF, c1 >> 8, c2 & 0xFF, c2 >> 8); | |
1701 | } | |
1702 | } | |
065e3595 | 1703 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
1704 | coding->produced = dst - coding->destination; |
1705 | coding->produced_char += produced_chars; | |
1706 | return 0; | |
1707 | } | |
1708 | ||
1709 | \f | |
1710 | /*** 6. Old Emacs' internal format (emacs-mule) ***/ | |
1711 | ||
1712 | /* Emacs' internal format for representation of multiple character | |
1713 | sets is a kind of multi-byte encoding, i.e. characters are | |
1714 | represented by variable-length sequences of one-byte codes. | |
1715 | ||
1716 | ASCII characters and control characters (e.g. `tab', `newline') are | |
1717 | represented by one-byte sequences which are their ASCII codes, in | |
1718 | the range 0x00 through 0x7F. | |
1719 | ||
1720 | 8-bit characters of the range 0x80..0x9F are represented by | |
1721 | two-byte sequences of LEADING_CODE_8_BIT_CONTROL and (their 8-bit | |
1722 | code + 0x20). | |
1723 | ||
1724 | 8-bit characters of the range 0xA0..0xFF are represented by | |
1725 | one-byte sequences which are their 8-bit code. | |
1726 | ||
1727 | The other characters are represented by a sequence of `base | |
1728 | leading-code', optional `extended leading-code', and one or two | |
1729 | `position-code's. The length of the sequence is determined by the | |
1730 | base leading-code. Leading-code takes the range 0x81 through 0x9D, | |
1731 | whereas extended leading-code and position-code take the range 0xA0 | |
1732 | through 0xFF. See `charset.h' for more details about leading-code | |
1733 | and position-code. | |
1734 | ||
1735 | --- CODE RANGE of Emacs' internal format --- | |
1736 | character set range | |
1737 | ------------- ----- | |
1738 | ascii 0x00..0x7F | |
1739 | eight-bit-control LEADING_CODE_8_BIT_CONTROL + 0xA0..0xBF | |
1740 | eight-bit-graphic 0xA0..0xBF | |
1741 | ELSE 0x81..0x9D + [0xA0..0xFF]+ | |
1742 | --------------------------------------------- | |
1743 | ||
1744 | As this is the internal character representation, the format is | |
1745 | usually not used externally (i.e. in a file or in a data sent to a | |
1746 | process). But, it is possible to have a text externally in this | |
1747 | format (i.e. by encoding by the coding system `emacs-mule'). | |
1748 | ||
1749 | In that case, a sequence of one-byte codes has a slightly different | |
1750 | form. | |
1751 | ||
1752 | At first, all characters in eight-bit-control are represented by | |
1753 | one-byte sequences which are their 8-bit code. | |
1754 | ||
1755 | Next, character composition data are represented by the byte | |
1756 | sequence of the form: 0x80 METHOD BYTES CHARS COMPONENT ..., | |
1757 | where, | |
1758 | METHOD is 0xF0 plus one of composition method (enum | |
1759 | composition_method), | |
1760 | ||
1761 | BYTES is 0xA0 plus a byte length of this composition data, | |
1762 | ||
1763 | CHARS is 0x20 plus a number of characters composed by this | |
1764 | data, | |
1765 | ||
1766 | COMPONENTs are characters of multibye form or composition | |
1767 | rules encoded by two-byte of ASCII codes. | |
1768 | ||
1769 | In addition, for backward compatibility, the following formats are | |
1770 | also recognized as composition data on decoding. | |
1771 | ||
1772 | 0x80 MSEQ ... | |
1773 | 0x80 0xFF MSEQ RULE MSEQ RULE ... MSEQ | |
1774 | ||
1775 | Here, | |
1776 | MSEQ is a multibyte form but in these special format: | |
1777 | ASCII: 0xA0 ASCII_CODE+0x80, | |
1778 | other: LEADING_CODE+0x20 FOLLOWING-BYTE ..., | |
1779 | RULE is a one byte code of the range 0xA0..0xF0 that | |
1780 | represents a composition rule. | |
1781 | */ | |
1782 | ||
1783 | char emacs_mule_bytes[256]; | |
1784 | ||
df7492f9 | 1785 | int |
ff0dacd7 | 1786 | emacs_mule_char (coding, src, nbytes, nchars, id) |
df7492f9 | 1787 | struct coding_system *coding; |
065e3595 | 1788 | const unsigned char *src; |
ff0dacd7 | 1789 | int *nbytes, *nchars, *id; |
df7492f9 | 1790 | { |
8f924df7 KH |
1791 | const unsigned char *src_end = coding->source + coding->src_bytes; |
1792 | const unsigned char *src_base = src; | |
df7492f9 | 1793 | int multibytep = coding->src_multibyte; |
df7492f9 KH |
1794 | struct charset *charset; |
1795 | unsigned code; | |
1796 | int c; | |
1797 | int consumed_chars = 0; | |
1798 | ||
1799 | ONE_MORE_BYTE (c); | |
065e3595 | 1800 | if (c < 0) |
df7492f9 | 1801 | { |
065e3595 KH |
1802 | c = -c; |
1803 | charset = emacs_mule_charset[0]; | |
1804 | } | |
1805 | else | |
1806 | { | |
4d41e8b7 KH |
1807 | if (c >= 0xA0) |
1808 | { | |
b3af4b28 | 1809 | /* Old style component character of a composition. */ |
4d41e8b7 KH |
1810 | if (c == 0xA0) |
1811 | { | |
1812 | ONE_MORE_BYTE (c); | |
1813 | c -= 0x80; | |
1814 | } | |
1815 | else | |
1816 | c -= 0x20; | |
1817 | } | |
1818 | ||
065e3595 | 1819 | switch (emacs_mule_bytes[c]) |
b73bfc1c | 1820 | { |
065e3595 | 1821 | case 2: |
df7492f9 KH |
1822 | if (! (charset = emacs_mule_charset[c])) |
1823 | goto invalid_code; | |
1824 | ONE_MORE_BYTE (c); | |
9ffd559c | 1825 | if (c < 0xA0) |
065e3595 | 1826 | goto invalid_code; |
df7492f9 | 1827 | code = c & 0x7F; |
065e3595 KH |
1828 | break; |
1829 | ||
1830 | case 3: | |
1831 | if (c == EMACS_MULE_LEADING_CODE_PRIVATE_11 | |
1832 | || c == EMACS_MULE_LEADING_CODE_PRIVATE_12) | |
1833 | { | |
1834 | ONE_MORE_BYTE (c); | |
9ffd559c | 1835 | if (c < 0xA0 || ! (charset = emacs_mule_charset[c])) |
065e3595 KH |
1836 | goto invalid_code; |
1837 | ONE_MORE_BYTE (c); | |
9ffd559c | 1838 | if (c < 0xA0) |
065e3595 KH |
1839 | goto invalid_code; |
1840 | code = c & 0x7F; | |
1841 | } | |
1842 | else | |
1843 | { | |
1844 | if (! (charset = emacs_mule_charset[c])) | |
1845 | goto invalid_code; | |
1846 | ONE_MORE_BYTE (c); | |
9ffd559c | 1847 | if (c < 0xA0) |
065e3595 KH |
1848 | goto invalid_code; |
1849 | code = (c & 0x7F) << 8; | |
1850 | ONE_MORE_BYTE (c); | |
9ffd559c | 1851 | if (c < 0xA0) |
065e3595 KH |
1852 | goto invalid_code; |
1853 | code |= c & 0x7F; | |
1854 | } | |
1855 | break; | |
1856 | ||
1857 | case 4: | |
1858 | ONE_MORE_BYTE (c); | |
1859 | if (c < 0 || ! (charset = emacs_mule_charset[c])) | |
df7492f9 KH |
1860 | goto invalid_code; |
1861 | ONE_MORE_BYTE (c); | |
9ffd559c | 1862 | if (c < 0xA0) |
065e3595 | 1863 | goto invalid_code; |
781d7a48 | 1864 | code = (c & 0x7F) << 8; |
df7492f9 | 1865 | ONE_MORE_BYTE (c); |
9ffd559c | 1866 | if (c < 0xA0) |
065e3595 | 1867 | goto invalid_code; |
df7492f9 | 1868 | code |= c & 0x7F; |
065e3595 | 1869 | break; |
df7492f9 | 1870 | |
065e3595 KH |
1871 | case 1: |
1872 | code = c; | |
1873 | charset = CHARSET_FROM_ID (ASCII_BYTE_P (code) | |
1874 | ? charset_ascii : charset_eight_bit); | |
1875 | break; | |
df7492f9 | 1876 | |
065e3595 KH |
1877 | default: |
1878 | abort (); | |
1879 | } | |
1880 | c = DECODE_CHAR (charset, code); | |
1881 | if (c < 0) | |
1882 | goto invalid_code; | |
df7492f9 | 1883 | } |
df7492f9 KH |
1884 | *nbytes = src - src_base; |
1885 | *nchars = consumed_chars; | |
ff0dacd7 KH |
1886 | if (id) |
1887 | *id = charset->id; | |
df7492f9 KH |
1888 | return c; |
1889 | ||
1890 | no_more_source: | |
1891 | return -2; | |
1892 | ||
1893 | invalid_code: | |
1894 | return -1; | |
1895 | } | |
1896 | ||
1897 | ||
1898 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
ff0dacd7 KH |
1899 | Check if a text is encoded in `emacs-mule'. If it is, return 1, |
1900 | else return 0. */ | |
df7492f9 KH |
1901 | |
1902 | static int | |
ff0dacd7 | 1903 | detect_coding_emacs_mule (coding, detect_info) |
df7492f9 | 1904 | struct coding_system *coding; |
ff0dacd7 | 1905 | struct coding_detection_info *detect_info; |
df7492f9 | 1906 | { |
065e3595 | 1907 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 1908 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
1909 | int multibytep = coding->src_multibyte; |
1910 | int consumed_chars = 0; | |
1911 | int c; | |
1912 | int found = 0; | |
1913 | ||
ff0dacd7 | 1914 | detect_info->checked |= CATEGORY_MASK_EMACS_MULE; |
df7492f9 KH |
1915 | /* A coding system of this category is always ASCII compatible. */ |
1916 | src += coding->head_ascii; | |
1917 | ||
1918 | while (1) | |
1919 | { | |
065e3595 | 1920 | src_base = src; |
df7492f9 | 1921 | ONE_MORE_BYTE (c); |
065e3595 KH |
1922 | if (c < 0) |
1923 | continue; | |
df7492f9 KH |
1924 | if (c == 0x80) |
1925 | { | |
1926 | /* Perhaps the start of composite character. We simple skip | |
1927 | it because analyzing it is too heavy for detecting. But, | |
1928 | at least, we check that the composite character | |
1929 | constitues of more than 4 bytes. */ | |
8f924df7 | 1930 | const unsigned char *src_base; |
df7492f9 KH |
1931 | |
1932 | repeat: | |
1933 | src_base = src; | |
1934 | do | |
1935 | { | |
1936 | ONE_MORE_BYTE (c); | |
1937 | } | |
1938 | while (c >= 0xA0); | |
1939 | ||
1940 | if (src - src_base <= 4) | |
1941 | break; | |
ff0dacd7 | 1942 | found = CATEGORY_MASK_EMACS_MULE; |
df7492f9 KH |
1943 | if (c == 0x80) |
1944 | goto repeat; | |
b73bfc1c | 1945 | } |
df7492f9 KH |
1946 | |
1947 | if (c < 0x80) | |
b73bfc1c | 1948 | { |
df7492f9 KH |
1949 | if (c < 0x20 |
1950 | && (c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO)) | |
1951 | break; | |
1952 | } | |
1953 | else | |
1954 | { | |
0e219d54 | 1955 | int more_bytes = emacs_mule_bytes[*src_base] - 1; |
df7492f9 | 1956 | |
0e219d54 | 1957 | while (more_bytes > 0) |
df7492f9 KH |
1958 | { |
1959 | ONE_MORE_BYTE (c); | |
0e219d54 KH |
1960 | if (c < 0xA0) |
1961 | { | |
1962 | src--; /* Unread the last byte. */ | |
1963 | break; | |
1964 | } | |
1965 | more_bytes--; | |
df7492f9 | 1966 | } |
0e219d54 | 1967 | if (more_bytes != 0) |
df7492f9 | 1968 | break; |
ff0dacd7 | 1969 | found = CATEGORY_MASK_EMACS_MULE; |
4ed46869 KH |
1970 | } |
1971 | } | |
ff0dacd7 | 1972 | detect_info->rejected |= CATEGORY_MASK_EMACS_MULE; |
df7492f9 KH |
1973 | return 0; |
1974 | ||
1975 | no_more_source: | |
065e3595 | 1976 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
89528eb3 | 1977 | { |
ff0dacd7 | 1978 | detect_info->rejected |= CATEGORY_MASK_EMACS_MULE; |
89528eb3 KH |
1979 | return 0; |
1980 | } | |
ff0dacd7 KH |
1981 | detect_info->found |= found; |
1982 | return 1; | |
4ed46869 KH |
1983 | } |
1984 | ||
b73bfc1c | 1985 | |
df7492f9 KH |
1986 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". */ |
1987 | ||
1988 | /* Decode a character represented as a component of composition | |
1989 | sequence of Emacs 20/21 style at SRC. Set C to that character and | |
1990 | update SRC to the head of next character (or an encoded composition | |
1991 | rule). If SRC doesn't points a composition component, set C to -1. | |
1992 | If SRC points an invalid byte sequence, global exit by a return | |
1993 | value 0. */ | |
1994 | ||
1995 | #define DECODE_EMACS_MULE_COMPOSITION_CHAR(buf) \ | |
f937a7db | 1996 | do \ |
df7492f9 KH |
1997 | { \ |
1998 | int c; \ | |
1999 | int nbytes, nchars; \ | |
2000 | \ | |
2001 | if (src == src_end) \ | |
2002 | break; \ | |
ff0dacd7 | 2003 | c = emacs_mule_char (coding, src, &nbytes, &nchars, NULL);\ |
df7492f9 KH |
2004 | if (c < 0) \ |
2005 | { \ | |
2006 | if (c == -2) \ | |
2007 | break; \ | |
2008 | goto invalid_code; \ | |
2009 | } \ | |
2010 | *buf++ = c; \ | |
2011 | src += nbytes; \ | |
2012 | consumed_chars += nchars; \ | |
2013 | } \ | |
f937a7db | 2014 | while (0) |
df7492f9 KH |
2015 | |
2016 | ||
2017 | /* Decode a composition rule represented as a component of composition | |
781d7a48 KH |
2018 | sequence of Emacs 20 style at SRC. Store the decoded rule in *BUF, |
2019 | and increment BUF. If SRC points an invalid byte sequence, set C | |
2020 | to -1. */ | |
df7492f9 | 2021 | |
781d7a48 | 2022 | #define DECODE_EMACS_MULE_COMPOSITION_RULE_20(buf) \ |
df7492f9 KH |
2023 | do { \ |
2024 | int c, gref, nref; \ | |
2025 | \ | |
781d7a48 | 2026 | if (src >= src_end) \ |
df7492f9 KH |
2027 | goto invalid_code; \ |
2028 | ONE_MORE_BYTE_NO_CHECK (c); \ | |
4d41e8b7 | 2029 | c -= 0xA0; \ |
df7492f9 KH |
2030 | if (c < 0 || c >= 81) \ |
2031 | goto invalid_code; \ | |
2032 | \ | |
2033 | gref = c / 9, nref = c % 9; \ | |
2034 | *buf++ = COMPOSITION_ENCODE_RULE (gref, nref); \ | |
2035 | } while (0) | |
2036 | ||
2037 | ||
781d7a48 KH |
2038 | /* Decode a composition rule represented as a component of composition |
2039 | sequence of Emacs 21 style at SRC. Store the decoded rule in *BUF, | |
2040 | and increment BUF. If SRC points an invalid byte sequence, set C | |
2041 | to -1. */ | |
2042 | ||
2043 | #define DECODE_EMACS_MULE_COMPOSITION_RULE_21(buf) \ | |
2044 | do { \ | |
2045 | int gref, nref; \ | |
2046 | \ | |
2047 | if (src + 1>= src_end) \ | |
2048 | goto invalid_code; \ | |
2049 | ONE_MORE_BYTE_NO_CHECK (gref); \ | |
2050 | gref -= 0x20; \ | |
2051 | ONE_MORE_BYTE_NO_CHECK (nref); \ | |
2052 | nref -= 0x20; \ | |
2053 | if (gref < 0 || gref >= 81 \ | |
2054 | || nref < 0 || nref >= 81) \ | |
2055 | goto invalid_code; \ | |
2056 | *buf++ = COMPOSITION_ENCODE_RULE (gref, nref); \ | |
2057 | } while (0) | |
2058 | ||
2059 | ||
df7492f9 | 2060 | #define DECODE_EMACS_MULE_21_COMPOSITION(c) \ |
aa72b389 | 2061 | do { \ |
df7492f9 | 2062 | /* Emacs 21 style format. The first three bytes at SRC are \ |
781d7a48 | 2063 | (METHOD - 0xF2), (BYTES - 0xA0), (CHARS - 0xA0), where BYTES is \ |
df7492f9 KH |
2064 | the byte length of this composition information, CHARS is the \ |
2065 | number of characters composed by this composition. */ \ | |
781d7a48 KH |
2066 | enum composition_method method = c - 0xF2; \ |
2067 | int *charbuf_base = charbuf; \ | |
df7492f9 KH |
2068 | int consumed_chars_limit; \ |
2069 | int nbytes, nchars; \ | |
2070 | \ | |
2071 | ONE_MORE_BYTE (c); \ | |
065e3595 KH |
2072 | if (c < 0) \ |
2073 | goto invalid_code; \ | |
df7492f9 KH |
2074 | nbytes = c - 0xA0; \ |
2075 | if (nbytes < 3) \ | |
2076 | goto invalid_code; \ | |
2077 | ONE_MORE_BYTE (c); \ | |
065e3595 KH |
2078 | if (c < 0) \ |
2079 | goto invalid_code; \ | |
df7492f9 | 2080 | nchars = c - 0xA0; \ |
69a80ea3 | 2081 | ADD_COMPOSITION_DATA (charbuf, nchars, method); \ |
df7492f9 KH |
2082 | consumed_chars_limit = consumed_chars_base + nbytes; \ |
2083 | if (method != COMPOSITION_RELATIVE) \ | |
aa72b389 | 2084 | { \ |
df7492f9 KH |
2085 | int i = 0; \ |
2086 | while (consumed_chars < consumed_chars_limit) \ | |
aa72b389 | 2087 | { \ |
df7492f9 | 2088 | if (i % 2 && method != COMPOSITION_WITH_ALTCHARS) \ |
781d7a48 | 2089 | DECODE_EMACS_MULE_COMPOSITION_RULE_21 (charbuf); \ |
df7492f9 KH |
2090 | else \ |
2091 | DECODE_EMACS_MULE_COMPOSITION_CHAR (charbuf); \ | |
781d7a48 | 2092 | i++; \ |
aa72b389 | 2093 | } \ |
df7492f9 KH |
2094 | if (consumed_chars < consumed_chars_limit) \ |
2095 | goto invalid_code; \ | |
781d7a48 | 2096 | charbuf_base[0] -= i; \ |
aa72b389 KH |
2097 | } \ |
2098 | } while (0) | |
93dec019 | 2099 | |
aa72b389 | 2100 | |
d959f512 KH |
2101 | #define DECODE_EMACS_MULE_20_RELATIVE_COMPOSITION(c) \ |
2102 | do { \ | |
2103 | /* Emacs 20 style format for relative composition. */ \ | |
2104 | /* Store multibyte form of characters to be composed. */ \ | |
2105 | enum composition_method method = COMPOSITION_RELATIVE; \ | |
2106 | int components[MAX_COMPOSITION_COMPONENTS * 2 - 1]; \ | |
2107 | int *buf = components; \ | |
2108 | int i, j; \ | |
2109 | \ | |
2110 | src = src_base; \ | |
2111 | ONE_MORE_BYTE (c); /* skip 0x80 */ \ | |
2112 | for (i = 0; *src >= 0xA0 && i < MAX_COMPOSITION_COMPONENTS; i++) \ | |
2113 | DECODE_EMACS_MULE_COMPOSITION_CHAR (buf); \ | |
2114 | if (i < 2) \ | |
2115 | goto invalid_code; \ | |
2116 | ADD_COMPOSITION_DATA (charbuf, i, method); \ | |
2117 | for (j = 0; j < i; j++) \ | |
2118 | *charbuf++ = components[j]; \ | |
df7492f9 KH |
2119 | } while (0) |
2120 | ||
2121 | ||
2122 | #define DECODE_EMACS_MULE_20_RULEBASE_COMPOSITION(c) \ | |
2123 | do { \ | |
2124 | /* Emacs 20 style format for rule-base composition. */ \ | |
2125 | /* Store multibyte form of characters to be composed. */ \ | |
ff0dacd7 | 2126 | enum composition_method method = COMPOSITION_WITH_RULE; \ |
4d41e8b7 | 2127 | int *charbuf_base = charbuf; \ |
df7492f9 KH |
2128 | int components[MAX_COMPOSITION_COMPONENTS * 2 - 1]; \ |
2129 | int *buf = components; \ | |
2130 | int i, j; \ | |
4d41e8b7 | 2131 | \ |
df7492f9 | 2132 | DECODE_EMACS_MULE_COMPOSITION_CHAR (buf); \ |
4d41e8b7 | 2133 | for (i = 1; i < MAX_COMPOSITION_COMPONENTS; i++) \ |
df7492f9 | 2134 | { \ |
4d41e8b7 KH |
2135 | if (*src < 0xA0) \ |
2136 | break; \ | |
781d7a48 | 2137 | DECODE_EMACS_MULE_COMPOSITION_RULE_20 (buf); \ |
df7492f9 KH |
2138 | DECODE_EMACS_MULE_COMPOSITION_CHAR (buf); \ |
2139 | } \ | |
4d41e8b7 | 2140 | if (i <= 1 || (buf - components) % 2 == 0) \ |
df7492f9 | 2141 | goto invalid_code; \ |
4d41e8b7 | 2142 | if (charbuf + i + (i / 2) + 1 >= charbuf_end) \ |
df7492f9 | 2143 | goto no_more_source; \ |
4d41e8b7 KH |
2144 | ADD_COMPOSITION_DATA (charbuf, i, method); \ |
2145 | i = i * 2 - 1; \ | |
df7492f9 KH |
2146 | for (j = 0; j < i; j++) \ |
2147 | *charbuf++ = components[j]; \ | |
4d41e8b7 | 2148 | charbuf_base[0] -= i; \ |
df7492f9 KH |
2149 | for (j = 0; j < i; j += 2) \ |
2150 | *charbuf++ = components[j]; \ | |
2151 | } while (0) | |
2152 | ||
aa72b389 KH |
2153 | |
2154 | static void | |
df7492f9 | 2155 | decode_coding_emacs_mule (coding) |
aa72b389 | 2156 | struct coding_system *coding; |
aa72b389 | 2157 | { |
8f924df7 KH |
2158 | const unsigned char *src = coding->source + coding->consumed; |
2159 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
2160 | const unsigned char *src_base; | |
69a80ea3 KH |
2161 | int *charbuf = coding->charbuf + coding->charbuf_used; |
2162 | int *charbuf_end | |
2163 | = coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH; | |
df7492f9 | 2164 | int consumed_chars = 0, consumed_chars_base; |
df7492f9 | 2165 | int multibytep = coding->src_multibyte; |
24a73b0a | 2166 | Lisp_Object attrs, charset_list; |
ff0dacd7 KH |
2167 | int char_offset = coding->produced_char; |
2168 | int last_offset = char_offset; | |
2169 | int last_id = charset_ascii; | |
119852e7 KH |
2170 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
2171 | int byte_after_cr = -1; | |
aa72b389 | 2172 | |
24a73b0a | 2173 | CODING_GET_INFO (coding, attrs, charset_list); |
aa72b389 | 2174 | |
aa72b389 KH |
2175 | while (1) |
2176 | { | |
df7492f9 KH |
2177 | int c; |
2178 | ||
aa72b389 | 2179 | src_base = src; |
df7492f9 KH |
2180 | consumed_chars_base = consumed_chars; |
2181 | ||
2182 | if (charbuf >= charbuf_end) | |
2183 | break; | |
aa72b389 | 2184 | |
119852e7 KH |
2185 | if (byte_after_cr >= 0) |
2186 | c = byte_after_cr, byte_after_cr = -1; | |
2187 | else | |
2188 | ONE_MORE_BYTE (c); | |
065e3595 KH |
2189 | if (c < 0) |
2190 | { | |
2191 | *charbuf++ = -c; | |
2192 | char_offset++; | |
2193 | } | |
2194 | else if (c < 0x80) | |
aa72b389 | 2195 | { |
119852e7 KH |
2196 | if (eol_crlf && c == '\r') |
2197 | ONE_MORE_BYTE (byte_after_cr); | |
df7492f9 KH |
2198 | *charbuf++ = c; |
2199 | char_offset++; | |
aa72b389 | 2200 | } |
df7492f9 KH |
2201 | else if (c == 0x80) |
2202 | { | |
df7492f9 | 2203 | ONE_MORE_BYTE (c); |
065e3595 KH |
2204 | if (c < 0) |
2205 | goto invalid_code; | |
781d7a48 KH |
2206 | if (c - 0xF2 >= COMPOSITION_RELATIVE |
2207 | && c - 0xF2 <= COMPOSITION_WITH_RULE_ALTCHARS) | |
df7492f9 KH |
2208 | DECODE_EMACS_MULE_21_COMPOSITION (c); |
2209 | else if (c < 0xC0) | |
2210 | DECODE_EMACS_MULE_20_RELATIVE_COMPOSITION (c); | |
2211 | else if (c == 0xFF) | |
2212 | DECODE_EMACS_MULE_20_RULEBASE_COMPOSITION (c); | |
2213 | else | |
2214 | goto invalid_code; | |
2215 | } | |
2216 | else if (c < 0xA0 && emacs_mule_bytes[c] > 1) | |
2217 | { | |
2218 | int nbytes, nchars; | |
ff0dacd7 KH |
2219 | int id; |
2220 | ||
781d7a48 KH |
2221 | src = src_base; |
2222 | consumed_chars = consumed_chars_base; | |
ff0dacd7 | 2223 | c = emacs_mule_char (coding, src, &nbytes, &nchars, &id); |
df7492f9 KH |
2224 | if (c < 0) |
2225 | { | |
2226 | if (c == -2) | |
2227 | break; | |
2228 | goto invalid_code; | |
2229 | } | |
ff0dacd7 KH |
2230 | if (last_id != id) |
2231 | { | |
2232 | if (last_id != charset_ascii) | |
69a80ea3 | 2233 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
ff0dacd7 KH |
2234 | last_id = id; |
2235 | last_offset = char_offset; | |
2236 | } | |
df7492f9 | 2237 | *charbuf++ = c; |
781d7a48 KH |
2238 | src += nbytes; |
2239 | consumed_chars += nchars; | |
df7492f9 KH |
2240 | char_offset++; |
2241 | } | |
4d41e8b7 KH |
2242 | else |
2243 | goto invalid_code; | |
df7492f9 KH |
2244 | continue; |
2245 | ||
2246 | invalid_code: | |
2247 | src = src_base; | |
2248 | consumed_chars = consumed_chars_base; | |
2249 | ONE_MORE_BYTE (c); | |
2250 | *charbuf++ = ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); | |
ff0dacd7 | 2251 | char_offset++; |
df7492f9 KH |
2252 | coding->errors++; |
2253 | } | |
2254 | ||
2255 | no_more_source: | |
ff0dacd7 | 2256 | if (last_id != charset_ascii) |
69a80ea3 | 2257 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
2258 | coding->consumed_char += consumed_chars_base; |
2259 | coding->consumed = src_base - coding->source; | |
2260 | coding->charbuf_used = charbuf - coding->charbuf; | |
2261 | } | |
2262 | ||
2263 | ||
2264 | #define EMACS_MULE_LEADING_CODES(id, codes) \ | |
2265 | do { \ | |
2266 | if (id < 0xA0) \ | |
2267 | codes[0] = id, codes[1] = 0; \ | |
2268 | else if (id < 0xE0) \ | |
2269 | codes[0] = 0x9A, codes[1] = id; \ | |
2270 | else if (id < 0xF0) \ | |
2271 | codes[0] = 0x9B, codes[1] = id; \ | |
2272 | else if (id < 0xF5) \ | |
2273 | codes[0] = 0x9C, codes[1] = id; \ | |
2274 | else \ | |
2275 | codes[0] = 0x9D, codes[1] = id; \ | |
2276 | } while (0); | |
2277 | ||
aa72b389 | 2278 | |
df7492f9 KH |
2279 | static int |
2280 | encode_coding_emacs_mule (coding) | |
2281 | struct coding_system *coding; | |
2282 | { | |
2283 | int multibytep = coding->dst_multibyte; | |
2284 | int *charbuf = coding->charbuf; | |
2285 | int *charbuf_end = charbuf + coding->charbuf_used; | |
2286 | unsigned char *dst = coding->destination + coding->produced; | |
2287 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
2288 | int safe_room = 8; | |
df7492f9 | 2289 | int produced_chars = 0; |
24a73b0a | 2290 | Lisp_Object attrs, charset_list; |
df7492f9 | 2291 | int c; |
ff0dacd7 | 2292 | int preferred_charset_id = -1; |
df7492f9 | 2293 | |
24a73b0a | 2294 | CODING_GET_INFO (coding, attrs, charset_list); |
eccb6815 KH |
2295 | if (! EQ (charset_list, Vemacs_mule_charset_list)) |
2296 | { | |
2297 | CODING_ATTR_CHARSET_LIST (attrs) | |
2298 | = charset_list = Vemacs_mule_charset_list; | |
2299 | } | |
df7492f9 KH |
2300 | |
2301 | while (charbuf < charbuf_end) | |
2302 | { | |
2303 | ASSURE_DESTINATION (safe_room); | |
2304 | c = *charbuf++; | |
ff0dacd7 KH |
2305 | |
2306 | if (c < 0) | |
2307 | { | |
2308 | /* Handle an annotation. */ | |
2309 | switch (*charbuf) | |
2310 | { | |
2311 | case CODING_ANNOTATE_COMPOSITION_MASK: | |
2312 | /* Not yet implemented. */ | |
2313 | break; | |
2314 | case CODING_ANNOTATE_CHARSET_MASK: | |
2315 | preferred_charset_id = charbuf[3]; | |
2316 | if (preferred_charset_id >= 0 | |
2317 | && NILP (Fmemq (make_number (preferred_charset_id), | |
2318 | charset_list))) | |
2319 | preferred_charset_id = -1; | |
2320 | break; | |
2321 | default: | |
2322 | abort (); | |
2323 | } | |
2324 | charbuf += -c - 1; | |
2325 | continue; | |
2326 | } | |
2327 | ||
df7492f9 KH |
2328 | if (ASCII_CHAR_P (c)) |
2329 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d KH |
2330 | else if (CHAR_BYTE8_P (c)) |
2331 | { | |
2332 | c = CHAR_TO_BYTE8 (c); | |
2333 | EMIT_ONE_BYTE (c); | |
2334 | } | |
df7492f9 | 2335 | else |
aa72b389 | 2336 | { |
df7492f9 KH |
2337 | struct charset *charset; |
2338 | unsigned code; | |
2339 | int dimension; | |
2340 | int emacs_mule_id; | |
2341 | unsigned char leading_codes[2]; | |
2342 | ||
ff0dacd7 KH |
2343 | if (preferred_charset_id >= 0) |
2344 | { | |
2345 | charset = CHARSET_FROM_ID (preferred_charset_id); | |
2346 | if (! CHAR_CHARSET_P (c, charset)) | |
2347 | charset = char_charset (c, charset_list, NULL); | |
2348 | } | |
2349 | else | |
2350 | charset = char_charset (c, charset_list, &code); | |
df7492f9 KH |
2351 | if (! charset) |
2352 | { | |
2353 | c = coding->default_char; | |
2354 | if (ASCII_CHAR_P (c)) | |
2355 | { | |
2356 | EMIT_ONE_ASCII_BYTE (c); | |
2357 | continue; | |
2358 | } | |
2359 | charset = char_charset (c, charset_list, &code); | |
2360 | } | |
2361 | dimension = CHARSET_DIMENSION (charset); | |
2362 | emacs_mule_id = CHARSET_EMACS_MULE_ID (charset); | |
2363 | EMACS_MULE_LEADING_CODES (emacs_mule_id, leading_codes); | |
2364 | EMIT_ONE_BYTE (leading_codes[0]); | |
2365 | if (leading_codes[1]) | |
2366 | EMIT_ONE_BYTE (leading_codes[1]); | |
2367 | if (dimension == 1) | |
1fa663f9 | 2368 | EMIT_ONE_BYTE (code | 0x80); |
aa72b389 | 2369 | else |
df7492f9 | 2370 | { |
1fa663f9 | 2371 | code |= 0x8080; |
df7492f9 KH |
2372 | EMIT_ONE_BYTE (code >> 8); |
2373 | EMIT_ONE_BYTE (code & 0xFF); | |
2374 | } | |
aa72b389 | 2375 | } |
aa72b389 | 2376 | } |
065e3595 | 2377 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
2378 | coding->produced_char += produced_chars; |
2379 | coding->produced = dst - coding->destination; | |
2380 | return 0; | |
aa72b389 | 2381 | } |
b73bfc1c | 2382 | |
4ed46869 | 2383 | \f |
df7492f9 | 2384 | /*** 7. ISO2022 handlers ***/ |
4ed46869 KH |
2385 | |
2386 | /* The following note describes the coding system ISO2022 briefly. | |
39787efd | 2387 | Since the intention of this note is to help understand the |
5a936b46 | 2388 | functions in this file, some parts are NOT ACCURATE or are OVERLY |
39787efd | 2389 | SIMPLIFIED. For thorough understanding, please refer to the |
5a936b46 | 2390 | original document of ISO2022. This is equivalent to the standard |
cfb43547 | 2391 | ECMA-35, obtainable from <URL:http://www.ecma.ch/> (*). |
4ed46869 KH |
2392 | |
2393 | ISO2022 provides many mechanisms to encode several character sets | |
cfb43547 | 2394 | in 7-bit and 8-bit environments. For 7-bit environments, all text |
39787efd KH |
2395 | is encoded using bytes less than 128. This may make the encoded |
2396 | text a little bit longer, but the text passes more easily through | |
cfb43547 | 2397 | several types of gateway, some of which strip off the MSB (Most |
8ca3766a | 2398 | Significant Bit). |
b73bfc1c | 2399 | |
cfb43547 DL |
2400 | There are two kinds of character sets: control character sets and |
2401 | graphic character sets. The former contain control characters such | |
4ed46869 | 2402 | as `newline' and `escape' to provide control functions (control |
39787efd | 2403 | functions are also provided by escape sequences). The latter |
cfb43547 | 2404 | contain graphic characters such as 'A' and '-'. Emacs recognizes |
4ed46869 KH |
2405 | two control character sets and many graphic character sets. |
2406 | ||
2407 | Graphic character sets are classified into one of the following | |
39787efd KH |
2408 | four classes, according to the number of bytes (DIMENSION) and |
2409 | number of characters in one dimension (CHARS) of the set: | |
2410 | - DIMENSION1_CHARS94 | |
2411 | - DIMENSION1_CHARS96 | |
2412 | - DIMENSION2_CHARS94 | |
2413 | - DIMENSION2_CHARS96 | |
2414 | ||
2415 | In addition, each character set is assigned an identification tag, | |
cfb43547 | 2416 | unique for each set, called the "final character" (denoted as <F> |
39787efd KH |
2417 | hereafter). The <F> of each character set is decided by ECMA(*) |
2418 | when it is registered in ISO. The code range of <F> is 0x30..0x7F | |
2419 | (0x30..0x3F are for private use only). | |
4ed46869 KH |
2420 | |
2421 | Note (*): ECMA = European Computer Manufacturers Association | |
2422 | ||
cfb43547 | 2423 | Here are examples of graphic character sets [NAME(<F>)]: |
4ed46869 KH |
2424 | o DIMENSION1_CHARS94 -- ASCII('B'), right-half-of-JISX0201('I'), ... |
2425 | o DIMENSION1_CHARS96 -- right-half-of-ISO8859-1('A'), ... | |
2426 | o DIMENSION2_CHARS94 -- GB2312('A'), JISX0208('B'), ... | |
2427 | o DIMENSION2_CHARS96 -- none for the moment | |
2428 | ||
39787efd | 2429 | A code area (1 byte=8 bits) is divided into 4 areas, C0, GL, C1, and GR. |
4ed46869 KH |
2430 | C0 [0x00..0x1F] -- control character plane 0 |
2431 | GL [0x20..0x7F] -- graphic character plane 0 | |
2432 | C1 [0x80..0x9F] -- control character plane 1 | |
2433 | GR [0xA0..0xFF] -- graphic character plane 1 | |
2434 | ||
2435 | A control character set is directly designated and invoked to C0 or | |
39787efd KH |
2436 | C1 by an escape sequence. The most common case is that: |
2437 | - ISO646's control character set is designated/invoked to C0, and | |
2438 | - ISO6429's control character set is designated/invoked to C1, | |
2439 | and usually these designations/invocations are omitted in encoded | |
2440 | text. In a 7-bit environment, only C0 can be used, and a control | |
2441 | character for C1 is encoded by an appropriate escape sequence to | |
2442 | fit into the environment. All control characters for C1 are | |
2443 | defined to have corresponding escape sequences. | |
4ed46869 KH |
2444 | |
2445 | A graphic character set is at first designated to one of four | |
2446 | graphic registers (G0 through G3), then these graphic registers are | |
2447 | invoked to GL or GR. These designations and invocations can be | |
2448 | done independently. The most common case is that G0 is invoked to | |
39787efd KH |
2449 | GL, G1 is invoked to GR, and ASCII is designated to G0. Usually |
2450 | these invocations and designations are omitted in encoded text. | |
2451 | In a 7-bit environment, only GL can be used. | |
4ed46869 | 2452 | |
39787efd KH |
2453 | When a graphic character set of CHARS94 is invoked to GL, codes |
2454 | 0x20 and 0x7F of the GL area work as control characters SPACE and | |
2455 | DEL respectively, and codes 0xA0 and 0xFF of the GR area should not | |
2456 | be used. | |
4ed46869 KH |
2457 | |
2458 | There are two ways of invocation: locking-shift and single-shift. | |
2459 | With locking-shift, the invocation lasts until the next different | |
39787efd KH |
2460 | invocation, whereas with single-shift, the invocation affects the |
2461 | following character only and doesn't affect the locking-shift | |
2462 | state. Invocations are done by the following control characters or | |
2463 | escape sequences: | |
4ed46869 KH |
2464 | |
2465 | ---------------------------------------------------------------------- | |
39787efd | 2466 | abbrev function cntrl escape seq description |
4ed46869 | 2467 | ---------------------------------------------------------------------- |
39787efd KH |
2468 | SI/LS0 (shift-in) 0x0F none invoke G0 into GL |
2469 | SO/LS1 (shift-out) 0x0E none invoke G1 into GL | |
2470 | LS2 (locking-shift-2) none ESC 'n' invoke G2 into GL | |
2471 | LS3 (locking-shift-3) none ESC 'o' invoke G3 into GL | |
2472 | LS1R (locking-shift-1 right) none ESC '~' invoke G1 into GR (*) | |
2473 | LS2R (locking-shift-2 right) none ESC '}' invoke G2 into GR (*) | |
2474 | LS3R (locking-shift 3 right) none ESC '|' invoke G3 into GR (*) | |
2475 | SS2 (single-shift-2) 0x8E ESC 'N' invoke G2 for one char | |
2476 | SS3 (single-shift-3) 0x8F ESC 'O' invoke G3 for one char | |
4ed46869 | 2477 | ---------------------------------------------------------------------- |
39787efd KH |
2478 | (*) These are not used by any known coding system. |
2479 | ||
2480 | Control characters for these functions are defined by macros | |
2481 | ISO_CODE_XXX in `coding.h'. | |
4ed46869 | 2482 | |
39787efd | 2483 | Designations are done by the following escape sequences: |
4ed46869 KH |
2484 | ---------------------------------------------------------------------- |
2485 | escape sequence description | |
2486 | ---------------------------------------------------------------------- | |
2487 | ESC '(' <F> designate DIMENSION1_CHARS94<F> to G0 | |
2488 | ESC ')' <F> designate DIMENSION1_CHARS94<F> to G1 | |
2489 | ESC '*' <F> designate DIMENSION1_CHARS94<F> to G2 | |
2490 | ESC '+' <F> designate DIMENSION1_CHARS94<F> to G3 | |
2491 | ESC ',' <F> designate DIMENSION1_CHARS96<F> to G0 (*) | |
2492 | ESC '-' <F> designate DIMENSION1_CHARS96<F> to G1 | |
2493 | ESC '.' <F> designate DIMENSION1_CHARS96<F> to G2 | |
2494 | ESC '/' <F> designate DIMENSION1_CHARS96<F> to G3 | |
2495 | ESC '$' '(' <F> designate DIMENSION2_CHARS94<F> to G0 (**) | |
2496 | ESC '$' ')' <F> designate DIMENSION2_CHARS94<F> to G1 | |
2497 | ESC '$' '*' <F> designate DIMENSION2_CHARS94<F> to G2 | |
2498 | ESC '$' '+' <F> designate DIMENSION2_CHARS94<F> to G3 | |
2499 | ESC '$' ',' <F> designate DIMENSION2_CHARS96<F> to G0 (*) | |
2500 | ESC '$' '-' <F> designate DIMENSION2_CHARS96<F> to G1 | |
2501 | ESC '$' '.' <F> designate DIMENSION2_CHARS96<F> to G2 | |
2502 | ESC '$' '/' <F> designate DIMENSION2_CHARS96<F> to G3 | |
2503 | ---------------------------------------------------------------------- | |
2504 | ||
2505 | In this list, "DIMENSION1_CHARS94<F>" means a graphic character set | |
39787efd | 2506 | of dimension 1, chars 94, and final character <F>, etc... |
4ed46869 KH |
2507 | |
2508 | Note (*): Although these designations are not allowed in ISO2022, | |
2509 | Emacs accepts them on decoding, and produces them on encoding | |
39787efd | 2510 | CHARS96 character sets in a coding system which is characterized as |
4ed46869 KH |
2511 | 7-bit environment, non-locking-shift, and non-single-shift. |
2512 | ||
2513 | Note (**): If <F> is '@', 'A', or 'B', the intermediate character | |
df7492f9 | 2514 | '(' must be omitted. We refer to this as "short-form" hereafter. |
4ed46869 | 2515 | |
cfb43547 | 2516 | Now you may notice that there are a lot of ways of encoding the |
39787efd KH |
2517 | same multilingual text in ISO2022. Actually, there exist many |
2518 | coding systems such as Compound Text (used in X11's inter client | |
8ca3766a DL |
2519 | communication, ISO-2022-JP (used in Japanese Internet), ISO-2022-KR |
2520 | (used in Korean Internet), EUC (Extended UNIX Code, used in Asian | |
4ed46869 KH |
2521 | localized platforms), and all of these are variants of ISO2022. |
2522 | ||
2523 | In addition to the above, Emacs handles two more kinds of escape | |
2524 | sequences: ISO6429's direction specification and Emacs' private | |
2525 | sequence for specifying character composition. | |
2526 | ||
39787efd | 2527 | ISO6429's direction specification takes the following form: |
4ed46869 KH |
2528 | o CSI ']' -- end of the current direction |
2529 | o CSI '0' ']' -- end of the current direction | |
2530 | o CSI '1' ']' -- start of left-to-right text | |
2531 | o CSI '2' ']' -- start of right-to-left text | |
2532 | The control character CSI (0x9B: control sequence introducer) is | |
39787efd KH |
2533 | abbreviated to the escape sequence ESC '[' in a 7-bit environment. |
2534 | ||
2535 | Character composition specification takes the following form: | |
ec6d2bb8 KH |
2536 | o ESC '0' -- start relative composition |
2537 | o ESC '1' -- end composition | |
2538 | o ESC '2' -- start rule-base composition (*) | |
2539 | o ESC '3' -- start relative composition with alternate chars (**) | |
2540 | o ESC '4' -- start rule-base composition with alternate chars (**) | |
b73bfc1c | 2541 | Since these are not standard escape sequences of any ISO standard, |
cfb43547 | 2542 | the use of them with these meanings is restricted to Emacs only. |
ec6d2bb8 | 2543 | |
5a936b46 DL |
2544 | (*) This form is used only in Emacs 20.7 and older versions, |
2545 | but newer versions can safely decode it. | |
cfb43547 | 2546 | (**) This form is used only in Emacs 21.1 and newer versions, |
5a936b46 | 2547 | and older versions can't decode it. |
ec6d2bb8 | 2548 | |
cfb43547 | 2549 | Here's a list of example usages of these composition escape |
b73bfc1c | 2550 | sequences (categorized by `enum composition_method'). |
ec6d2bb8 | 2551 | |
b73bfc1c | 2552 | COMPOSITION_RELATIVE: |
ec6d2bb8 | 2553 | ESC 0 CHAR [ CHAR ] ESC 1 |
8ca3766a | 2554 | COMPOSITION_WITH_RULE: |
ec6d2bb8 | 2555 | ESC 2 CHAR [ RULE CHAR ] ESC 1 |
b73bfc1c | 2556 | COMPOSITION_WITH_ALTCHARS: |
ec6d2bb8 | 2557 | ESC 3 ALTCHAR [ ALTCHAR ] ESC 0 CHAR [ CHAR ] ESC 1 |
b73bfc1c | 2558 | COMPOSITION_WITH_RULE_ALTCHARS: |
ec6d2bb8 | 2559 | ESC 4 ALTCHAR [ RULE ALTCHAR ] ESC 0 CHAR [ CHAR ] ESC 1 */ |
4ed46869 KH |
2560 | |
2561 | enum iso_code_class_type iso_code_class[256]; | |
2562 | ||
df7492f9 KH |
2563 | #define SAFE_CHARSET_P(coding, id) \ |
2564 | ((id) <= (coding)->max_charset_id \ | |
2565 | && (coding)->safe_charsets[id] >= 0) | |
2566 | ||
2567 | ||
2568 | #define SHIFT_OUT_OK(category) \ | |
2569 | (CODING_ISO_INITIAL (&coding_categories[category], 1) >= 0) | |
2570 | ||
2571 | static void | |
f0064e1f DL |
2572 | setup_iso_safe_charsets (attrs) |
2573 | Lisp_Object attrs; | |
df7492f9 KH |
2574 | { |
2575 | Lisp_Object charset_list, safe_charsets; | |
2576 | Lisp_Object request; | |
2577 | Lisp_Object reg_usage; | |
2578 | Lisp_Object tail; | |
2579 | int reg94, reg96; | |
2580 | int flags = XINT (AREF (attrs, coding_attr_iso_flags)); | |
2581 | int max_charset_id; | |
2582 | ||
2583 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
2584 | if ((flags & CODING_ISO_FLAG_FULL_SUPPORT) | |
2585 | && ! EQ (charset_list, Viso_2022_charset_list)) | |
2586 | { | |
2587 | CODING_ATTR_CHARSET_LIST (attrs) | |
2588 | = charset_list = Viso_2022_charset_list; | |
2589 | ASET (attrs, coding_attr_safe_charsets, Qnil); | |
2590 | } | |
2591 | ||
2592 | if (STRINGP (AREF (attrs, coding_attr_safe_charsets))) | |
2593 | return; | |
2594 | ||
2595 | max_charset_id = 0; | |
2596 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
2597 | { | |
2598 | int id = XINT (XCAR (tail)); | |
2599 | if (max_charset_id < id) | |
2600 | max_charset_id = id; | |
2601 | } | |
d46c5b12 | 2602 | |
df7492f9 KH |
2603 | safe_charsets = Fmake_string (make_number (max_charset_id + 1), |
2604 | make_number (255)); | |
2605 | request = AREF (attrs, coding_attr_iso_request); | |
2606 | reg_usage = AREF (attrs, coding_attr_iso_usage); | |
2607 | reg94 = XINT (XCAR (reg_usage)); | |
2608 | reg96 = XINT (XCDR (reg_usage)); | |
2609 | ||
2610 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
2611 | { | |
2612 | Lisp_Object id; | |
2613 | Lisp_Object reg; | |
2614 | struct charset *charset; | |
2615 | ||
2616 | id = XCAR (tail); | |
2617 | charset = CHARSET_FROM_ID (XINT (id)); | |
bf16eb23 | 2618 | reg = Fcdr (Fassq (id, request)); |
df7492f9 | 2619 | if (! NILP (reg)) |
8f924df7 | 2620 | SSET (safe_charsets, XINT (id), XINT (reg)); |
df7492f9 KH |
2621 | else if (charset->iso_chars_96) |
2622 | { | |
2623 | if (reg96 < 4) | |
8f924df7 | 2624 | SSET (safe_charsets, XINT (id), reg96); |
df7492f9 KH |
2625 | } |
2626 | else | |
2627 | { | |
2628 | if (reg94 < 4) | |
8f924df7 | 2629 | SSET (safe_charsets, XINT (id), reg94); |
df7492f9 KH |
2630 | } |
2631 | } | |
2632 | ASET (attrs, coding_attr_safe_charsets, safe_charsets); | |
2633 | } | |
d46c5b12 | 2634 | |
b6871cc7 | 2635 | |
4ed46869 | 2636 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". |
ff0dacd7 KH |
2637 | Check if a text is encoded in one of ISO-2022 based codig systems. |
2638 | If it is, return 1, else return 0. */ | |
4ed46869 | 2639 | |
0a28aafb | 2640 | static int |
ff0dacd7 | 2641 | detect_coding_iso_2022 (coding, detect_info) |
df7492f9 | 2642 | struct coding_system *coding; |
ff0dacd7 | 2643 | struct coding_detection_info *detect_info; |
4ed46869 | 2644 | { |
8f924df7 KH |
2645 | const unsigned char *src = coding->source, *src_base = src; |
2646 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
df7492f9 | 2647 | int multibytep = coding->src_multibyte; |
ff0dacd7 | 2648 | int single_shifting = 0; |
df7492f9 KH |
2649 | int id; |
2650 | int c, c1; | |
2651 | int consumed_chars = 0; | |
2652 | int i; | |
ff0dacd7 KH |
2653 | int rejected = 0; |
2654 | int found = 0; | |
2655 | ||
2656 | detect_info->checked |= CATEGORY_MASK_ISO; | |
df7492f9 KH |
2657 | |
2658 | for (i = coding_category_iso_7; i <= coding_category_iso_8_else; i++) | |
2659 | { | |
2660 | struct coding_system *this = &(coding_categories[i]); | |
2661 | Lisp_Object attrs, val; | |
2662 | ||
2663 | attrs = CODING_ID_ATTRS (this->id); | |
2664 | if (CODING_ISO_FLAGS (this) & CODING_ISO_FLAG_FULL_SUPPORT | |
2665 | && ! EQ (CODING_ATTR_SAFE_CHARSETS (attrs), Viso_2022_charset_list)) | |
2666 | setup_iso_safe_charsets (attrs); | |
2667 | val = CODING_ATTR_SAFE_CHARSETS (attrs); | |
8f924df7 KH |
2668 | this->max_charset_id = SCHARS (val) - 1; |
2669 | this->safe_charsets = (char *) SDATA (val); | |
df7492f9 KH |
2670 | } |
2671 | ||
2672 | /* A coding system of this category is always ASCII compatible. */ | |
2673 | src += coding->head_ascii; | |
3f003981 | 2674 | |
ff0dacd7 | 2675 | while (rejected != CATEGORY_MASK_ISO) |
4ed46869 | 2676 | { |
065e3595 | 2677 | src_base = src; |
df7492f9 | 2678 | ONE_MORE_BYTE (c); |
4ed46869 KH |
2679 | switch (c) |
2680 | { | |
2681 | case ISO_CODE_ESC: | |
74383408 KH |
2682 | if (inhibit_iso_escape_detection) |
2683 | break; | |
f46869e4 | 2684 | single_shifting = 0; |
df7492f9 | 2685 | ONE_MORE_BYTE (c); |
d46c5b12 | 2686 | if (c >= '(' && c <= '/') |
4ed46869 | 2687 | { |
bf9cdd4e | 2688 | /* Designation sequence for a charset of dimension 1. */ |
df7492f9 | 2689 | ONE_MORE_BYTE (c1); |
d46c5b12 | 2690 | if (c1 < ' ' || c1 >= 0x80 |
df7492f9 | 2691 | || (id = iso_charset_table[0][c >= ','][c1]) < 0) |
d46c5b12 KH |
2692 | /* Invalid designation sequence. Just ignore. */ |
2693 | break; | |
bf9cdd4e KH |
2694 | } |
2695 | else if (c == '$') | |
2696 | { | |
2697 | /* Designation sequence for a charset of dimension 2. */ | |
df7492f9 | 2698 | ONE_MORE_BYTE (c); |
bf9cdd4e KH |
2699 | if (c >= '@' && c <= 'B') |
2700 | /* Designation for JISX0208.1978, GB2312, or JISX0208. */ | |
ff0dacd7 | 2701 | id = iso_charset_table[1][0][c]; |
bf9cdd4e | 2702 | else if (c >= '(' && c <= '/') |
bcf26d6a | 2703 | { |
df7492f9 | 2704 | ONE_MORE_BYTE (c1); |
d46c5b12 | 2705 | if (c1 < ' ' || c1 >= 0x80 |
df7492f9 | 2706 | || (id = iso_charset_table[1][c >= ','][c1]) < 0) |
d46c5b12 KH |
2707 | /* Invalid designation sequence. Just ignore. */ |
2708 | break; | |
bcf26d6a | 2709 | } |
bf9cdd4e | 2710 | else |
ff0dacd7 | 2711 | /* Invalid designation sequence. Just ignore it. */ |
d46c5b12 KH |
2712 | break; |
2713 | } | |
ae9ff118 | 2714 | else if (c == 'N' || c == 'O') |
d46c5b12 | 2715 | { |
ae9ff118 | 2716 | /* ESC <Fe> for SS2 or SS3. */ |
ff0dacd7 KH |
2717 | single_shifting = 1; |
2718 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_8BIT; | |
d46c5b12 | 2719 | break; |
4ed46869 | 2720 | } |
ec6d2bb8 KH |
2721 | else if (c >= '0' && c <= '4') |
2722 | { | |
2723 | /* ESC <Fp> for start/end composition. */ | |
ff0dacd7 | 2724 | found |= CATEGORY_MASK_ISO; |
ec6d2bb8 KH |
2725 | break; |
2726 | } | |
bf9cdd4e | 2727 | else |
df7492f9 | 2728 | { |
ff0dacd7 | 2729 | /* Invalid escape sequence. Just ignore it. */ |
df7492f9 KH |
2730 | break; |
2731 | } | |
d46c5b12 KH |
2732 | |
2733 | /* We found a valid designation sequence for CHARSET. */ | |
ff0dacd7 | 2734 | rejected |= CATEGORY_MASK_ISO_8BIT; |
df7492f9 KH |
2735 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_7], |
2736 | id)) | |
ff0dacd7 | 2737 | found |= CATEGORY_MASK_ISO_7; |
d46c5b12 | 2738 | else |
ff0dacd7 | 2739 | rejected |= CATEGORY_MASK_ISO_7; |
df7492f9 KH |
2740 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_7_tight], |
2741 | id)) | |
ff0dacd7 | 2742 | found |= CATEGORY_MASK_ISO_7_TIGHT; |
d46c5b12 | 2743 | else |
ff0dacd7 | 2744 | rejected |= CATEGORY_MASK_ISO_7_TIGHT; |
df7492f9 KH |
2745 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_7_else], |
2746 | id)) | |
ff0dacd7 | 2747 | found |= CATEGORY_MASK_ISO_7_ELSE; |
ae9ff118 | 2748 | else |
ff0dacd7 | 2749 | rejected |= CATEGORY_MASK_ISO_7_ELSE; |
df7492f9 KH |
2750 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_8_else], |
2751 | id)) | |
ff0dacd7 | 2752 | found |= CATEGORY_MASK_ISO_8_ELSE; |
ae9ff118 | 2753 | else |
ff0dacd7 | 2754 | rejected |= CATEGORY_MASK_ISO_8_ELSE; |
4ed46869 KH |
2755 | break; |
2756 | ||
4ed46869 | 2757 | case ISO_CODE_SO: |
d46c5b12 | 2758 | case ISO_CODE_SI: |
ff0dacd7 | 2759 | /* Locking shift out/in. */ |
74383408 KH |
2760 | if (inhibit_iso_escape_detection) |
2761 | break; | |
f46869e4 | 2762 | single_shifting = 0; |
ff0dacd7 | 2763 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_8BIT; |
d46c5b12 KH |
2764 | break; |
2765 | ||
4ed46869 | 2766 | case ISO_CODE_CSI: |
ff0dacd7 | 2767 | /* Control sequence introducer. */ |
f46869e4 | 2768 | single_shifting = 0; |
ff0dacd7 KH |
2769 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_7_ELSE; |
2770 | found |= CATEGORY_MASK_ISO_8_ELSE; | |
2771 | goto check_extra_latin; | |
2772 | ||
4ed46869 KH |
2773 | case ISO_CODE_SS2: |
2774 | case ISO_CODE_SS3: | |
ff0dacd7 KH |
2775 | /* Single shift. */ |
2776 | if (inhibit_iso_escape_detection) | |
2777 | break; | |
75e2a253 | 2778 | single_shifting = 0; |
ff0dacd7 KH |
2779 | rejected |= CATEGORY_MASK_ISO_7BIT; |
2780 | if (CODING_ISO_FLAGS (&coding_categories[coding_category_iso_8_1]) | |
2781 | & CODING_ISO_FLAG_SINGLE_SHIFT) | |
75e2a253 | 2782 | found |= CATEGORY_MASK_ISO_8_1, single_shifting = 1; |
ff0dacd7 KH |
2783 | if (CODING_ISO_FLAGS (&coding_categories[coding_category_iso_8_2]) |
2784 | & CODING_ISO_FLAG_SINGLE_SHIFT) | |
75e2a253 KH |
2785 | found |= CATEGORY_MASK_ISO_8_2, single_shifting = 1; |
2786 | if (single_shifting) | |
2787 | break; | |
ff0dacd7 | 2788 | goto check_extra_latin; |
4ed46869 KH |
2789 | |
2790 | default: | |
065e3595 KH |
2791 | if (c < 0) |
2792 | continue; | |
4ed46869 | 2793 | if (c < 0x80) |
f46869e4 KH |
2794 | { |
2795 | single_shifting = 0; | |
2796 | break; | |
2797 | } | |
ff0dacd7 | 2798 | if (c >= 0xA0) |
c4825358 | 2799 | { |
ff0dacd7 KH |
2800 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_7_ELSE; |
2801 | found |= CATEGORY_MASK_ISO_8_1; | |
f46869e4 | 2802 | /* Check the length of succeeding codes of the range |
ff0dacd7 KH |
2803 | 0xA0..0FF. If the byte length is even, we include |
2804 | CATEGORY_MASK_ISO_8_2 in `found'. We can check this | |
2805 | only when we are not single shifting. */ | |
2806 | if (! single_shifting | |
2807 | && ! (rejected & CATEGORY_MASK_ISO_8_2)) | |
f46869e4 | 2808 | { |
e17de821 | 2809 | int i = 1; |
b73bfc1c KH |
2810 | while (src < src_end) |
2811 | { | |
df7492f9 | 2812 | ONE_MORE_BYTE (c); |
b73bfc1c KH |
2813 | if (c < 0xA0) |
2814 | break; | |
2815 | i++; | |
2816 | } | |
2817 | ||
2818 | if (i & 1 && src < src_end) | |
ff0dacd7 | 2819 | rejected |= CATEGORY_MASK_ISO_8_2; |
f46869e4 | 2820 | else |
ff0dacd7 | 2821 | found |= CATEGORY_MASK_ISO_8_2; |
f46869e4 | 2822 | } |
ff0dacd7 | 2823 | break; |
4ed46869 | 2824 | } |
ff0dacd7 KH |
2825 | check_extra_latin: |
2826 | single_shifting = 0; | |
2827 | if (! VECTORP (Vlatin_extra_code_table) | |
2828 | || NILP (XVECTOR (Vlatin_extra_code_table)->contents[c])) | |
2829 | { | |
2830 | rejected = CATEGORY_MASK_ISO; | |
2831 | break; | |
2832 | } | |
2833 | if (CODING_ISO_FLAGS (&coding_categories[coding_category_iso_8_1]) | |
2834 | & CODING_ISO_FLAG_LATIN_EXTRA) | |
2835 | found |= CATEGORY_MASK_ISO_8_1; | |
2836 | else | |
2837 | rejected |= CATEGORY_MASK_ISO_8_1; | |
75e2a253 | 2838 | rejected |= CATEGORY_MASK_ISO_8_2; |
4ed46869 KH |
2839 | } |
2840 | } | |
ff0dacd7 KH |
2841 | detect_info->rejected |= CATEGORY_MASK_ISO; |
2842 | return 0; | |
4ed46869 | 2843 | |
df7492f9 | 2844 | no_more_source: |
ff0dacd7 KH |
2845 | detect_info->rejected |= rejected; |
2846 | detect_info->found |= (found & ~rejected); | |
df7492f9 | 2847 | return 1; |
4ed46869 | 2848 | } |
ec6d2bb8 | 2849 | |
4ed46869 | 2850 | |
134b9549 KH |
2851 | /* Set designation state into CODING. Set CHARS_96 to -1 if the |
2852 | escape sequence should be kept. */ | |
df7492f9 KH |
2853 | #define DECODE_DESIGNATION(reg, dim, chars_96, final) \ |
2854 | do { \ | |
2855 | int id, prev; \ | |
2856 | \ | |
2857 | if (final < '0' || final >= 128 \ | |
2858 | || ((id = ISO_CHARSET_TABLE (dim, chars_96, final)) < 0) \ | |
2859 | || !SAFE_CHARSET_P (coding, id)) \ | |
2860 | { \ | |
2861 | CODING_ISO_DESIGNATION (coding, reg) = -2; \ | |
134b9549 KH |
2862 | chars_96 = -1; \ |
2863 | break; \ | |
df7492f9 KH |
2864 | } \ |
2865 | prev = CODING_ISO_DESIGNATION (coding, reg); \ | |
bf16eb23 KH |
2866 | if (id == charset_jisx0201_roman) \ |
2867 | { \ | |
2868 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_ROMAN) \ | |
2869 | id = charset_ascii; \ | |
2870 | } \ | |
2871 | else if (id == charset_jisx0208_1978) \ | |
2872 | { \ | |
2873 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_OLDJIS) \ | |
2874 | id = charset_jisx0208; \ | |
2875 | } \ | |
df7492f9 KH |
2876 | CODING_ISO_DESIGNATION (coding, reg) = id; \ |
2877 | /* If there was an invalid designation to REG previously, and this \ | |
2878 | designation is ASCII to REG, we should keep this designation \ | |
2879 | sequence. */ \ | |
2880 | if (prev == -2 && id == charset_ascii) \ | |
134b9549 | 2881 | chars_96 = -1; \ |
4ed46869 KH |
2882 | } while (0) |
2883 | ||
d46c5b12 | 2884 | |
df7492f9 KH |
2885 | #define MAYBE_FINISH_COMPOSITION() \ |
2886 | do { \ | |
2887 | int i; \ | |
2888 | if (composition_state == COMPOSING_NO) \ | |
2889 | break; \ | |
2890 | /* It is assured that we have enough room for producing \ | |
2891 | characters stored in the table `components'. */ \ | |
2892 | if (charbuf + component_idx > charbuf_end) \ | |
2893 | goto no_more_source; \ | |
2894 | composition_state = COMPOSING_NO; \ | |
2895 | if (method == COMPOSITION_RELATIVE \ | |
2896 | || method == COMPOSITION_WITH_ALTCHARS) \ | |
2897 | { \ | |
2898 | for (i = 0; i < component_idx; i++) \ | |
2899 | *charbuf++ = components[i]; \ | |
2900 | char_offset += component_idx; \ | |
2901 | } \ | |
2902 | else \ | |
2903 | { \ | |
2904 | for (i = 0; i < component_idx; i += 2) \ | |
2905 | *charbuf++ = components[i]; \ | |
2906 | char_offset += (component_idx / 2) + 1; \ | |
2907 | } \ | |
2908 | } while (0) | |
2909 | ||
d46c5b12 | 2910 | |
aa72b389 KH |
2911 | /* Handle composition start sequence ESC 0, ESC 2, ESC 3, or ESC 4. |
2912 | ESC 0 : relative composition : ESC 0 CHAR ... ESC 1 | |
2913 | ESC 2 : rulebase composition : ESC 2 CHAR RULE CHAR RULE ... CHAR ESC 1 | |
df7492f9 KH |
2914 | ESC 3 : altchar composition : ESC 3 CHAR ... ESC 0 CHAR ... ESC 1 |
2915 | ESC 4 : alt&rule composition : ESC 4 CHAR RULE ... CHAR ESC 0 CHAR ... ESC 1 | |
aa72b389 | 2916 | */ |
ec6d2bb8 | 2917 | |
df7492f9 KH |
2918 | #define DECODE_COMPOSITION_START(c1) \ |
2919 | do { \ | |
2920 | if (c1 == '0' \ | |
781d7a48 | 2921 | && composition_state == COMPOSING_COMPONENT_RULE) \ |
df7492f9 KH |
2922 | { \ |
2923 | component_len = component_idx; \ | |
2924 | composition_state = COMPOSING_CHAR; \ | |
2925 | } \ | |
2926 | else \ | |
2927 | { \ | |
8f924df7 | 2928 | const unsigned char *p; \ |
df7492f9 KH |
2929 | \ |
2930 | MAYBE_FINISH_COMPOSITION (); \ | |
2931 | if (charbuf + MAX_COMPOSITION_COMPONENTS > charbuf_end) \ | |
2932 | goto no_more_source; \ | |
2933 | for (p = src; p < src_end - 1; p++) \ | |
2934 | if (*p == ISO_CODE_ESC && p[1] == '1') \ | |
2935 | break; \ | |
2936 | if (p == src_end - 1) \ | |
2937 | { \ | |
9286b333 KH |
2938 | /* The current composition doesn't end in the current \ |
2939 | source. */ \ | |
2940 | record_conversion_result \ | |
2941 | (coding, CODING_RESULT_INSUFFICIENT_SRC); \ | |
df7492f9 KH |
2942 | goto no_more_source; \ |
2943 | } \ | |
2944 | \ | |
2945 | /* This is surely the start of a composition. */ \ | |
2946 | method = (c1 == '0' ? COMPOSITION_RELATIVE \ | |
2947 | : c1 == '2' ? COMPOSITION_WITH_RULE \ | |
2948 | : c1 == '3' ? COMPOSITION_WITH_ALTCHARS \ | |
2949 | : COMPOSITION_WITH_RULE_ALTCHARS); \ | |
2950 | composition_state = (c1 <= '2' ? COMPOSING_CHAR \ | |
2951 | : COMPOSING_COMPONENT_CHAR); \ | |
2952 | component_idx = component_len = 0; \ | |
2953 | } \ | |
ec6d2bb8 KH |
2954 | } while (0) |
2955 | ||
ec6d2bb8 | 2956 | |
df7492f9 KH |
2957 | /* Handle compositoin end sequence ESC 1. */ |
2958 | ||
2959 | #define DECODE_COMPOSITION_END() \ | |
ec6d2bb8 | 2960 | do { \ |
df7492f9 KH |
2961 | int nchars = (component_len > 0 ? component_idx - component_len \ |
2962 | : method == COMPOSITION_RELATIVE ? component_idx \ | |
2963 | : (component_idx + 1) / 2); \ | |
2964 | int i; \ | |
2965 | int *saved_charbuf = charbuf; \ | |
2966 | \ | |
69a80ea3 | 2967 | ADD_COMPOSITION_DATA (charbuf, nchars, method); \ |
df7492f9 | 2968 | if (method != COMPOSITION_RELATIVE) \ |
ec6d2bb8 | 2969 | { \ |
df7492f9 KH |
2970 | if (component_len == 0) \ |
2971 | for (i = 0; i < component_idx; i++) \ | |
2972 | *charbuf++ = components[i]; \ | |
2973 | else \ | |
2974 | for (i = 0; i < component_len; i++) \ | |
2975 | *charbuf++ = components[i]; \ | |
2976 | *saved_charbuf = saved_charbuf - charbuf; \ | |
ec6d2bb8 | 2977 | } \ |
df7492f9 KH |
2978 | if (method == COMPOSITION_WITH_RULE) \ |
2979 | for (i = 0; i < component_idx; i += 2, char_offset++) \ | |
2980 | *charbuf++ = components[i]; \ | |
ec6d2bb8 | 2981 | else \ |
df7492f9 KH |
2982 | for (i = component_len; i < component_idx; i++, char_offset++) \ |
2983 | *charbuf++ = components[i]; \ | |
2984 | coding->annotated = 1; \ | |
2985 | composition_state = COMPOSING_NO; \ | |
ec6d2bb8 KH |
2986 | } while (0) |
2987 | ||
df7492f9 | 2988 | |
ec6d2bb8 KH |
2989 | /* Decode a composition rule from the byte C1 (and maybe one more byte |
2990 | from SRC) and store one encoded composition rule in | |
2991 | coding->cmp_data. */ | |
2992 | ||
2993 | #define DECODE_COMPOSITION_RULE(c1) \ | |
2994 | do { \ | |
ec6d2bb8 KH |
2995 | (c1) -= 32; \ |
2996 | if (c1 < 81) /* old format (before ver.21) */ \ | |
2997 | { \ | |
2998 | int gref = (c1) / 9; \ | |
2999 | int nref = (c1) % 9; \ | |
3000 | if (gref == 4) gref = 10; \ | |
3001 | if (nref == 4) nref = 10; \ | |
df7492f9 | 3002 | c1 = COMPOSITION_ENCODE_RULE (gref, nref); \ |
ec6d2bb8 | 3003 | } \ |
b73bfc1c | 3004 | else if (c1 < 93) /* new format (after ver.21) */ \ |
ec6d2bb8 KH |
3005 | { \ |
3006 | ONE_MORE_BYTE (c2); \ | |
df7492f9 | 3007 | c1 = COMPOSITION_ENCODE_RULE (c1 - 81, c2 - 32); \ |
ec6d2bb8 | 3008 | } \ |
df7492f9 KH |
3009 | else \ |
3010 | c1 = 0; \ | |
ec6d2bb8 | 3011 | } while (0) |
88993dfd | 3012 | |
d46c5b12 | 3013 | |
4ed46869 KH |
3014 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". */ |
3015 | ||
b73bfc1c | 3016 | static void |
df7492f9 | 3017 | decode_coding_iso_2022 (coding) |
4ed46869 | 3018 | struct coding_system *coding; |
4ed46869 | 3019 | { |
8f924df7 KH |
3020 | const unsigned char *src = coding->source + coding->consumed; |
3021 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
3022 | const unsigned char *src_base; | |
69a80ea3 | 3023 | int *charbuf = coding->charbuf + coding->charbuf_used; |
ff0dacd7 | 3024 | int *charbuf_end |
69a80ea3 | 3025 | = coding->charbuf + coding->charbuf_size - 4 - MAX_ANNOTATION_LENGTH; |
df7492f9 | 3026 | int consumed_chars = 0, consumed_chars_base; |
df7492f9 | 3027 | int multibytep = coding->src_multibyte; |
4ed46869 | 3028 | /* Charsets invoked to graphic plane 0 and 1 respectively. */ |
df7492f9 KH |
3029 | int charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); |
3030 | int charset_id_1 = CODING_ISO_INVOKED_CHARSET (coding, 1); | |
134b9549 | 3031 | int charset_id_2, charset_id_3; |
df7492f9 KH |
3032 | struct charset *charset; |
3033 | int c; | |
3034 | /* For handling composition sequence. */ | |
3035 | #define COMPOSING_NO 0 | |
3036 | #define COMPOSING_CHAR 1 | |
3037 | #define COMPOSING_RULE 2 | |
3038 | #define COMPOSING_COMPONENT_CHAR 3 | |
3039 | #define COMPOSING_COMPONENT_RULE 4 | |
3040 | ||
3041 | int composition_state = COMPOSING_NO; | |
3042 | enum composition_method method; | |
3043 | int components[MAX_COMPOSITION_COMPONENTS * 2 + 1]; | |
3044 | int component_idx; | |
3045 | int component_len; | |
24a73b0a | 3046 | Lisp_Object attrs, charset_list; |
ff0dacd7 KH |
3047 | int char_offset = coding->produced_char; |
3048 | int last_offset = char_offset; | |
3049 | int last_id = charset_ascii; | |
119852e7 KH |
3050 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
3051 | int byte_after_cr = -1; | |
df7492f9 | 3052 | |
24a73b0a | 3053 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 | 3054 | setup_iso_safe_charsets (attrs); |
287c57d7 KH |
3055 | /* Charset list may have been changed. */ |
3056 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
3057 | coding->safe_charsets = (char *) SDATA (CODING_ATTR_SAFE_CHARSETS(attrs)); | |
b73bfc1c KH |
3058 | |
3059 | while (1) | |
4ed46869 | 3060 | { |
463f5630 | 3061 | int c1, c2; |
b73bfc1c KH |
3062 | |
3063 | src_base = src; | |
df7492f9 KH |
3064 | consumed_chars_base = consumed_chars; |
3065 | ||
3066 | if (charbuf >= charbuf_end) | |
3067 | break; | |
3068 | ||
119852e7 KH |
3069 | if (byte_after_cr >= 0) |
3070 | c1 = byte_after_cr, byte_after_cr = -1; | |
3071 | else | |
3072 | ONE_MORE_BYTE (c1); | |
065e3595 KH |
3073 | if (c1 < 0) |
3074 | goto invalid_code; | |
4ed46869 | 3075 | |
98725083 | 3076 | /* We produce at most one character. */ |
4ed46869 KH |
3077 | switch (iso_code_class [c1]) |
3078 | { | |
3079 | case ISO_0x20_or_0x7F: | |
df7492f9 | 3080 | if (composition_state != COMPOSING_NO) |
ec6d2bb8 | 3081 | { |
df7492f9 KH |
3082 | if (composition_state == COMPOSING_RULE |
3083 | || composition_state == COMPOSING_COMPONENT_RULE) | |
3084 | { | |
3085 | DECODE_COMPOSITION_RULE (c1); | |
3086 | components[component_idx++] = c1; | |
3087 | composition_state--; | |
3088 | continue; | |
3089 | } | |
4ed46869 | 3090 | } |
df7492f9 KH |
3091 | if (charset_id_0 < 0 |
3092 | || ! CHARSET_ISO_CHARS_96 (CHARSET_FROM_ID (charset_id_0))) | |
781d7a48 KH |
3093 | /* This is SPACE or DEL. */ |
3094 | charset = CHARSET_FROM_ID (charset_ascii); | |
3095 | else | |
3096 | charset = CHARSET_FROM_ID (charset_id_0); | |
3097 | break; | |
4ed46869 KH |
3098 | |
3099 | case ISO_graphic_plane_0: | |
781d7a48 | 3100 | if (composition_state != COMPOSING_NO) |
b73bfc1c | 3101 | { |
781d7a48 KH |
3102 | if (composition_state == COMPOSING_RULE |
3103 | || composition_state == COMPOSING_COMPONENT_RULE) | |
3104 | { | |
3105 | DECODE_COMPOSITION_RULE (c1); | |
3106 | components[component_idx++] = c1; | |
3107 | composition_state--; | |
3108 | continue; | |
3109 | } | |
b73bfc1c | 3110 | } |
134b9549 KH |
3111 | if (charset_id_0 < 0) |
3112 | charset = CHARSET_FROM_ID (charset_ascii); | |
3113 | else | |
3114 | charset = CHARSET_FROM_ID (charset_id_0); | |
4ed46869 KH |
3115 | break; |
3116 | ||
3117 | case ISO_0xA0_or_0xFF: | |
df7492f9 KH |
3118 | if (charset_id_1 < 0 |
3119 | || ! CHARSET_ISO_CHARS_96 (CHARSET_FROM_ID (charset_id_1)) | |
3120 | || CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) | |
3121 | goto invalid_code; | |
4ed46869 KH |
3122 | /* This is a graphic character, we fall down ... */ |
3123 | ||
3124 | case ISO_graphic_plane_1: | |
df7492f9 KH |
3125 | if (charset_id_1 < 0) |
3126 | goto invalid_code; | |
3127 | charset = CHARSET_FROM_ID (charset_id_1); | |
4ed46869 KH |
3128 | break; |
3129 | ||
df7492f9 | 3130 | case ISO_control_0: |
119852e7 KH |
3131 | if (eol_crlf && c1 == '\r') |
3132 | ONE_MORE_BYTE (byte_after_cr); | |
df7492f9 KH |
3133 | MAYBE_FINISH_COMPOSITION (); |
3134 | charset = CHARSET_FROM_ID (charset_ascii); | |
4ed46869 KH |
3135 | break; |
3136 | ||
df7492f9 KH |
3137 | case ISO_control_1: |
3138 | MAYBE_FINISH_COMPOSITION (); | |
3139 | goto invalid_code; | |
3140 | ||
4ed46869 | 3141 | case ISO_shift_out: |
df7492f9 KH |
3142 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT) |
3143 | || CODING_ISO_DESIGNATION (coding, 1) < 0) | |
3144 | goto invalid_code; | |
3145 | CODING_ISO_INVOCATION (coding, 0) = 1; | |
3146 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3147 | continue; |
4ed46869 KH |
3148 | |
3149 | case ISO_shift_in: | |
df7492f9 KH |
3150 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT)) |
3151 | goto invalid_code; | |
3152 | CODING_ISO_INVOCATION (coding, 0) = 0; | |
3153 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3154 | continue; |
4ed46869 KH |
3155 | |
3156 | case ISO_single_shift_2_7: | |
3157 | case ISO_single_shift_2: | |
df7492f9 KH |
3158 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT)) |
3159 | goto invalid_code; | |
4ed46869 KH |
3160 | /* SS2 is handled as an escape sequence of ESC 'N' */ |
3161 | c1 = 'N'; | |
3162 | goto label_escape_sequence; | |
3163 | ||
3164 | case ISO_single_shift_3: | |
df7492f9 KH |
3165 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT)) |
3166 | goto invalid_code; | |
4ed46869 KH |
3167 | /* SS2 is handled as an escape sequence of ESC 'O' */ |
3168 | c1 = 'O'; | |
3169 | goto label_escape_sequence; | |
3170 | ||
3171 | case ISO_control_sequence_introducer: | |
3172 | /* CSI is handled as an escape sequence of ESC '[' ... */ | |
3173 | c1 = '['; | |
3174 | goto label_escape_sequence; | |
3175 | ||
3176 | case ISO_escape: | |
3177 | ONE_MORE_BYTE (c1); | |
3178 | label_escape_sequence: | |
df7492f9 | 3179 | /* Escape sequences handled here are invocation, |
4ed46869 KH |
3180 | designation, direction specification, and character |
3181 | composition specification. */ | |
3182 | switch (c1) | |
3183 | { | |
3184 | case '&': /* revision of following character set */ | |
3185 | ONE_MORE_BYTE (c1); | |
3186 | if (!(c1 >= '@' && c1 <= '~')) | |
df7492f9 | 3187 | goto invalid_code; |
4ed46869 KH |
3188 | ONE_MORE_BYTE (c1); |
3189 | if (c1 != ISO_CODE_ESC) | |
df7492f9 | 3190 | goto invalid_code; |
4ed46869 KH |
3191 | ONE_MORE_BYTE (c1); |
3192 | goto label_escape_sequence; | |
3193 | ||
3194 | case '$': /* designation of 2-byte character set */ | |
df7492f9 KH |
3195 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATION)) |
3196 | goto invalid_code; | |
134b9549 KH |
3197 | { |
3198 | int reg, chars96; | |
3199 | ||
3200 | ONE_MORE_BYTE (c1); | |
3201 | if (c1 >= '@' && c1 <= 'B') | |
3202 | { /* designation of JISX0208.1978, GB2312.1980, | |
88993dfd | 3203 | or JISX0208.1980 */ |
134b9549 KH |
3204 | reg = 0, chars96 = 0; |
3205 | } | |
3206 | else if (c1 >= 0x28 && c1 <= 0x2B) | |
3207 | { /* designation of DIMENSION2_CHARS94 character set */ | |
3208 | reg = c1 - 0x28, chars96 = 0; | |
3209 | ONE_MORE_BYTE (c1); | |
3210 | } | |
3211 | else if (c1 >= 0x2C && c1 <= 0x2F) | |
3212 | { /* designation of DIMENSION2_CHARS96 character set */ | |
3213 | reg = c1 - 0x2C, chars96 = 1; | |
3214 | ONE_MORE_BYTE (c1); | |
3215 | } | |
3216 | else | |
3217 | goto invalid_code; | |
3218 | DECODE_DESIGNATION (reg, 2, chars96, c1); | |
3219 | /* We must update these variables now. */ | |
3220 | if (reg == 0) | |
3221 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
3222 | else if (reg == 1) | |
3223 | charset_id_1 = CODING_ISO_INVOKED_CHARSET (coding, 1); | |
3224 | if (chars96 < 0) | |
3225 | goto invalid_code; | |
3226 | } | |
b73bfc1c | 3227 | continue; |
4ed46869 KH |
3228 | |
3229 | case 'n': /* invocation of locking-shift-2 */ | |
df7492f9 KH |
3230 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT) |
3231 | || CODING_ISO_DESIGNATION (coding, 2) < 0) | |
3232 | goto invalid_code; | |
3233 | CODING_ISO_INVOCATION (coding, 0) = 2; | |
3234 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3235 | continue; |
4ed46869 KH |
3236 | |
3237 | case 'o': /* invocation of locking-shift-3 */ | |
df7492f9 KH |
3238 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT) |
3239 | || CODING_ISO_DESIGNATION (coding, 3) < 0) | |
3240 | goto invalid_code; | |
3241 | CODING_ISO_INVOCATION (coding, 0) = 3; | |
3242 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3243 | continue; |
4ed46869 KH |
3244 | |
3245 | case 'N': /* invocation of single-shift-2 */ | |
df7492f9 KH |
3246 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
3247 | || CODING_ISO_DESIGNATION (coding, 2) < 0) | |
3248 | goto invalid_code; | |
134b9549 KH |
3249 | charset_id_2 = CODING_ISO_DESIGNATION (coding, 2); |
3250 | if (charset_id_2 < 0) | |
3251 | charset = CHARSET_FROM_ID (charset_ascii); | |
3252 | else | |
3253 | charset = CHARSET_FROM_ID (charset_id_2); | |
b73bfc1c | 3254 | ONE_MORE_BYTE (c1); |
e7046a18 | 3255 | if (c1 < 0x20 || (c1 >= 0x80 && c1 < 0xA0)) |
df7492f9 | 3256 | goto invalid_code; |
4ed46869 KH |
3257 | break; |
3258 | ||
3259 | case 'O': /* invocation of single-shift-3 */ | |
df7492f9 KH |
3260 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
3261 | || CODING_ISO_DESIGNATION (coding, 3) < 0) | |
3262 | goto invalid_code; | |
134b9549 KH |
3263 | charset_id_3 = CODING_ISO_DESIGNATION (coding, 3); |
3264 | if (charset_id_3 < 0) | |
3265 | charset = CHARSET_FROM_ID (charset_ascii); | |
3266 | else | |
3267 | charset = CHARSET_FROM_ID (charset_id_3); | |
b73bfc1c | 3268 | ONE_MORE_BYTE (c1); |
e7046a18 | 3269 | if (c1 < 0x20 || (c1 >= 0x80 && c1 < 0xA0)) |
df7492f9 | 3270 | goto invalid_code; |
4ed46869 KH |
3271 | break; |
3272 | ||
ec6d2bb8 | 3273 | case '0': case '2': case '3': case '4': /* start composition */ |
df7492f9 KH |
3274 | if (! (coding->common_flags & CODING_ANNOTATE_COMPOSITION_MASK)) |
3275 | goto invalid_code; | |
ec6d2bb8 | 3276 | DECODE_COMPOSITION_START (c1); |
b73bfc1c | 3277 | continue; |
4ed46869 | 3278 | |
ec6d2bb8 | 3279 | case '1': /* end composition */ |
df7492f9 KH |
3280 | if (composition_state == COMPOSING_NO) |
3281 | goto invalid_code; | |
3282 | DECODE_COMPOSITION_END (); | |
b73bfc1c | 3283 | continue; |
4ed46869 KH |
3284 | |
3285 | case '[': /* specification of direction */ | |
df7492f9 KH |
3286 | if (! CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DIRECTION) |
3287 | goto invalid_code; | |
4ed46869 | 3288 | /* For the moment, nested direction is not supported. |
d46c5b12 | 3289 | So, `coding->mode & CODING_MODE_DIRECTION' zero means |
df7492f9 | 3290 | left-to-right, and nozero means right-to-left. */ |
4ed46869 KH |
3291 | ONE_MORE_BYTE (c1); |
3292 | switch (c1) | |
3293 | { | |
3294 | case ']': /* end of the current direction */ | |
d46c5b12 | 3295 | coding->mode &= ~CODING_MODE_DIRECTION; |
4ed46869 KH |
3296 | |
3297 | case '0': /* end of the current direction */ | |
3298 | case '1': /* start of left-to-right direction */ | |
3299 | ONE_MORE_BYTE (c1); | |
3300 | if (c1 == ']') | |
d46c5b12 | 3301 | coding->mode &= ~CODING_MODE_DIRECTION; |
4ed46869 | 3302 | else |
df7492f9 | 3303 | goto invalid_code; |
4ed46869 KH |
3304 | break; |
3305 | ||
3306 | case '2': /* start of right-to-left direction */ | |
3307 | ONE_MORE_BYTE (c1); | |
3308 | if (c1 == ']') | |
d46c5b12 | 3309 | coding->mode |= CODING_MODE_DIRECTION; |
4ed46869 | 3310 | else |
df7492f9 | 3311 | goto invalid_code; |
4ed46869 KH |
3312 | break; |
3313 | ||
3314 | default: | |
df7492f9 | 3315 | goto invalid_code; |
4ed46869 | 3316 | } |
b73bfc1c | 3317 | continue; |
4ed46869 | 3318 | |
103e0180 | 3319 | case '%': |
103e0180 KH |
3320 | ONE_MORE_BYTE (c1); |
3321 | if (c1 == '/') | |
3322 | { | |
3323 | /* CTEXT extended segment: | |
3324 | ESC % / [0-4] M L --ENCODING-NAME-- \002 --BYTES-- | |
3325 | We keep these bytes as is for the moment. | |
3326 | They may be decoded by post-read-conversion. */ | |
3327 | int dim, M, L; | |
4776e638 | 3328 | int size; |
8f924df7 | 3329 | |
103e0180 KH |
3330 | ONE_MORE_BYTE (dim); |
3331 | ONE_MORE_BYTE (M); | |
3332 | ONE_MORE_BYTE (L); | |
3333 | size = ((M - 128) * 128) + (L - 128); | |
4776e638 KH |
3334 | if (charbuf + 8 + size > charbuf_end) |
3335 | goto break_loop; | |
3336 | *charbuf++ = ISO_CODE_ESC; | |
3337 | *charbuf++ = '%'; | |
3338 | *charbuf++ = '/'; | |
3339 | *charbuf++ = dim; | |
3340 | *charbuf++ = BYTE8_TO_CHAR (M); | |
3341 | *charbuf++ = BYTE8_TO_CHAR (L); | |
103e0180 KH |
3342 | while (size-- > 0) |
3343 | { | |
3344 | ONE_MORE_BYTE (c1); | |
4776e638 | 3345 | *charbuf++ = ASCII_BYTE_P (c1) ? c1 : BYTE8_TO_CHAR (c1); |
103e0180 | 3346 | } |
103e0180 KH |
3347 | } |
3348 | else if (c1 == 'G') | |
3349 | { | |
103e0180 KH |
3350 | /* XFree86 extension for embedding UTF-8 in CTEXT: |
3351 | ESC % G --UTF-8-BYTES-- ESC % @ | |
3352 | We keep these bytes as is for the moment. | |
3353 | They may be decoded by post-read-conversion. */ | |
4776e638 KH |
3354 | int *p = charbuf; |
3355 | ||
3356 | if (p + 6 > charbuf_end) | |
3357 | goto break_loop; | |
3358 | *p++ = ISO_CODE_ESC; | |
3359 | *p++ = '%'; | |
3360 | *p++ = 'G'; | |
3361 | while (p < charbuf_end) | |
103e0180 KH |
3362 | { |
3363 | ONE_MORE_BYTE (c1); | |
3364 | if (c1 == ISO_CODE_ESC | |
3365 | && src + 1 < src_end | |
3366 | && src[0] == '%' | |
3367 | && src[1] == '@') | |
9ffd559c KH |
3368 | { |
3369 | src += 2; | |
3370 | break; | |
3371 | } | |
4776e638 | 3372 | *p++ = ASCII_BYTE_P (c1) ? c1 : BYTE8_TO_CHAR (c1); |
103e0180 | 3373 | } |
4776e638 KH |
3374 | if (p + 3 > charbuf_end) |
3375 | goto break_loop; | |
3376 | *p++ = ISO_CODE_ESC; | |
3377 | *p++ = '%'; | |
3378 | *p++ = '@'; | |
3379 | charbuf = p; | |
103e0180 KH |
3380 | } |
3381 | else | |
4776e638 | 3382 | goto invalid_code; |
103e0180 | 3383 | continue; |
4776e638 | 3384 | break; |
103e0180 | 3385 | |
4ed46869 | 3386 | default: |
df7492f9 KH |
3387 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATION)) |
3388 | goto invalid_code; | |
134b9549 KH |
3389 | { |
3390 | int reg, chars96; | |
3391 | ||
3392 | if (c1 >= 0x28 && c1 <= 0x2B) | |
3393 | { /* designation of DIMENSION1_CHARS94 character set */ | |
3394 | reg = c1 - 0x28, chars96 = 0; | |
3395 | ONE_MORE_BYTE (c1); | |
3396 | } | |
3397 | else if (c1 >= 0x2C && c1 <= 0x2F) | |
3398 | { /* designation of DIMENSION1_CHARS96 character set */ | |
3399 | reg = c1 - 0x2C, chars96 = 1; | |
3400 | ONE_MORE_BYTE (c1); | |
3401 | } | |
3402 | else | |
3403 | goto invalid_code; | |
3404 | DECODE_DESIGNATION (reg, 1, chars96, c1); | |
3405 | /* We must update these variables now. */ | |
3406 | if (reg == 0) | |
3407 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
3408 | else if (reg == 1) | |
3409 | charset_id_1 = CODING_ISO_INVOKED_CHARSET (coding, 1); | |
3410 | if (chars96 < 0) | |
3411 | goto invalid_code; | |
3412 | } | |
b73bfc1c | 3413 | continue; |
4ed46869 | 3414 | } |
b73bfc1c | 3415 | } |
4ed46869 | 3416 | |
ff0dacd7 KH |
3417 | if (charset->id != charset_ascii |
3418 | && last_id != charset->id) | |
3419 | { | |
3420 | if (last_id != charset_ascii) | |
69a80ea3 | 3421 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
ff0dacd7 KH |
3422 | last_id = charset->id; |
3423 | last_offset = char_offset; | |
3424 | } | |
3425 | ||
b73bfc1c | 3426 | /* Now we know CHARSET and 1st position code C1 of a character. |
df7492f9 KH |
3427 | Produce a decoded character while getting 2nd position code |
3428 | C2 if necessary. */ | |
3429 | c1 &= 0x7F; | |
3430 | if (CHARSET_DIMENSION (charset) > 1) | |
b73bfc1c KH |
3431 | { |
3432 | ONE_MORE_BYTE (c2); | |
df7492f9 | 3433 | if (c2 < 0x20 || (c2 >= 0x80 && c2 < 0xA0)) |
b73bfc1c | 3434 | /* C2 is not in a valid range. */ |
df7492f9 KH |
3435 | goto invalid_code; |
3436 | c1 = (c1 << 8) | (c2 & 0x7F); | |
3437 | if (CHARSET_DIMENSION (charset) > 2) | |
3438 | { | |
3439 | ONE_MORE_BYTE (c2); | |
3440 | if (c2 < 0x20 || (c2 >= 0x80 && c2 < 0xA0)) | |
3441 | /* C2 is not in a valid range. */ | |
3442 | goto invalid_code; | |
3443 | c1 = (c1 << 8) | (c2 & 0x7F); | |
3444 | } | |
3445 | } | |
3446 | ||
3447 | CODING_DECODE_CHAR (coding, src, src_base, src_end, charset, c1, c); | |
3448 | if (c < 0) | |
3449 | { | |
3450 | MAYBE_FINISH_COMPOSITION (); | |
3451 | for (; src_base < src; src_base++, char_offset++) | |
3452 | { | |
3453 | if (ASCII_BYTE_P (*src_base)) | |
3454 | *charbuf++ = *src_base; | |
3455 | else | |
3456 | *charbuf++ = BYTE8_TO_CHAR (*src_base); | |
3457 | } | |
3458 | } | |
3459 | else if (composition_state == COMPOSING_NO) | |
3460 | { | |
3461 | *charbuf++ = c; | |
3462 | char_offset++; | |
4ed46869 | 3463 | } |
df7492f9 | 3464 | else |
781d7a48 KH |
3465 | { |
3466 | components[component_idx++] = c; | |
3467 | if (method == COMPOSITION_WITH_RULE | |
3468 | || (method == COMPOSITION_WITH_RULE_ALTCHARS | |
3469 | && composition_state == COMPOSING_COMPONENT_CHAR)) | |
3470 | composition_state++; | |
4ed46869 KH |
3471 | } |
3472 | continue; | |
3473 | ||
df7492f9 KH |
3474 | invalid_code: |
3475 | MAYBE_FINISH_COMPOSITION (); | |
4ed46869 | 3476 | src = src_base; |
df7492f9 KH |
3477 | consumed_chars = consumed_chars_base; |
3478 | ONE_MORE_BYTE (c); | |
065e3595 | 3479 | *charbuf++ = c < 0 ? -c : ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 3480 | char_offset++; |
df7492f9 | 3481 | coding->errors++; |
4776e638 KH |
3482 | continue; |
3483 | ||
3484 | break_loop: | |
3485 | break; | |
4ed46869 | 3486 | } |
fb88bf2d | 3487 | |
df7492f9 | 3488 | no_more_source: |
ff0dacd7 | 3489 | if (last_id != charset_ascii) |
69a80ea3 | 3490 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
3491 | coding->consumed_char += consumed_chars_base; |
3492 | coding->consumed = src_base - coding->source; | |
3493 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
3494 | } |
3495 | ||
b73bfc1c | 3496 | |
f4dee582 | 3497 | /* ISO2022 encoding stuff. */ |
4ed46869 KH |
3498 | |
3499 | /* | |
f4dee582 | 3500 | It is not enough to say just "ISO2022" on encoding, we have to |
df7492f9 | 3501 | specify more details. In Emacs, each coding system of ISO2022 |
4ed46869 | 3502 | variant has the following specifications: |
df7492f9 | 3503 | 1. Initial designation to G0 thru G3. |
4ed46869 KH |
3504 | 2. Allows short-form designation? |
3505 | 3. ASCII should be designated to G0 before control characters? | |
3506 | 4. ASCII should be designated to G0 at end of line? | |
3507 | 5. 7-bit environment or 8-bit environment? | |
3508 | 6. Use locking-shift? | |
3509 | 7. Use Single-shift? | |
3510 | And the following two are only for Japanese: | |
3511 | 8. Use ASCII in place of JIS0201-1976-Roman? | |
3512 | 9. Use JISX0208-1983 in place of JISX0208-1978? | |
df7492f9 KH |
3513 | These specifications are encoded in CODING_ISO_FLAGS (coding) as flag bits |
3514 | defined by macros CODING_ISO_FLAG_XXX. See `coding.h' for more | |
f4dee582 | 3515 | details. |
4ed46869 KH |
3516 | */ |
3517 | ||
3518 | /* Produce codes (escape sequence) for designating CHARSET to graphic | |
b73bfc1c KH |
3519 | register REG at DST, and increment DST. If <final-char> of CHARSET is |
3520 | '@', 'A', or 'B' and the coding system CODING allows, produce | |
3521 | designation sequence of short-form. */ | |
4ed46869 KH |
3522 | |
3523 | #define ENCODE_DESIGNATION(charset, reg, coding) \ | |
3524 | do { \ | |
df7492f9 | 3525 | unsigned char final_char = CHARSET_ISO_FINAL (charset); \ |
4ed46869 KH |
3526 | char *intermediate_char_94 = "()*+"; \ |
3527 | char *intermediate_char_96 = ",-./"; \ | |
df7492f9 KH |
3528 | int revision = -1; \ |
3529 | int c; \ | |
3530 | \ | |
3531 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_REVISION) \ | |
c197f191 | 3532 | revision = CHARSET_ISO_REVISION (charset); \ |
df7492f9 KH |
3533 | \ |
3534 | if (revision >= 0) \ | |
70c22245 | 3535 | { \ |
df7492f9 KH |
3536 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, '&'); \ |
3537 | EMIT_ONE_BYTE ('@' + revision); \ | |
4ed46869 | 3538 | } \ |
df7492f9 | 3539 | EMIT_ONE_ASCII_BYTE (ISO_CODE_ESC); \ |
4ed46869 KH |
3540 | if (CHARSET_DIMENSION (charset) == 1) \ |
3541 | { \ | |
df7492f9 KH |
3542 | if (! CHARSET_ISO_CHARS_96 (charset)) \ |
3543 | c = intermediate_char_94[reg]; \ | |
4ed46869 | 3544 | else \ |
df7492f9 KH |
3545 | c = intermediate_char_96[reg]; \ |
3546 | EMIT_ONE_ASCII_BYTE (c); \ | |
4ed46869 KH |
3547 | } \ |
3548 | else \ | |
3549 | { \ | |
df7492f9 KH |
3550 | EMIT_ONE_ASCII_BYTE ('$'); \ |
3551 | if (! CHARSET_ISO_CHARS_96 (charset)) \ | |
4ed46869 | 3552 | { \ |
df7492f9 | 3553 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LONG_FORM \ |
b73bfc1c KH |
3554 | || reg != 0 \ |
3555 | || final_char < '@' || final_char > 'B') \ | |
df7492f9 | 3556 | EMIT_ONE_ASCII_BYTE (intermediate_char_94[reg]); \ |
4ed46869 KH |
3557 | } \ |
3558 | else \ | |
df7492f9 | 3559 | EMIT_ONE_ASCII_BYTE (intermediate_char_96[reg]); \ |
4ed46869 | 3560 | } \ |
df7492f9 KH |
3561 | EMIT_ONE_ASCII_BYTE (final_char); \ |
3562 | \ | |
3563 | CODING_ISO_DESIGNATION (coding, reg) = CHARSET_ID (charset); \ | |
4ed46869 KH |
3564 | } while (0) |
3565 | ||
df7492f9 | 3566 | |
4ed46869 KH |
3567 | /* The following two macros produce codes (control character or escape |
3568 | sequence) for ISO2022 single-shift functions (single-shift-2 and | |
3569 | single-shift-3). */ | |
3570 | ||
df7492f9 KH |
3571 | #define ENCODE_SINGLE_SHIFT_2 \ |
3572 | do { \ | |
3573 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ | |
3574 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'N'); \ | |
3575 | else \ | |
3576 | EMIT_ONE_BYTE (ISO_CODE_SS2); \ | |
3577 | CODING_ISO_SINGLE_SHIFTING (coding) = 1; \ | |
4ed46869 KH |
3578 | } while (0) |
3579 | ||
df7492f9 KH |
3580 | |
3581 | #define ENCODE_SINGLE_SHIFT_3 \ | |
3582 | do { \ | |
3583 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ | |
3584 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'O'); \ | |
3585 | else \ | |
3586 | EMIT_ONE_BYTE (ISO_CODE_SS3); \ | |
3587 | CODING_ISO_SINGLE_SHIFTING (coding) = 1; \ | |
4ed46869 KH |
3588 | } while (0) |
3589 | ||
df7492f9 | 3590 | |
4ed46869 KH |
3591 | /* The following four macros produce codes (control character or |
3592 | escape sequence) for ISO2022 locking-shift functions (shift-in, | |
3593 | shift-out, locking-shift-2, and locking-shift-3). */ | |
3594 | ||
df7492f9 KH |
3595 | #define ENCODE_SHIFT_IN \ |
3596 | do { \ | |
3597 | EMIT_ONE_ASCII_BYTE (ISO_CODE_SI); \ | |
3598 | CODING_ISO_INVOCATION (coding, 0) = 0; \ | |
4ed46869 KH |
3599 | } while (0) |
3600 | ||
df7492f9 KH |
3601 | |
3602 | #define ENCODE_SHIFT_OUT \ | |
3603 | do { \ | |
3604 | EMIT_ONE_ASCII_BYTE (ISO_CODE_SO); \ | |
3605 | CODING_ISO_INVOCATION (coding, 0) = 1; \ | |
4ed46869 KH |
3606 | } while (0) |
3607 | ||
df7492f9 KH |
3608 | |
3609 | #define ENCODE_LOCKING_SHIFT_2 \ | |
3610 | do { \ | |
3611 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'n'); \ | |
3612 | CODING_ISO_INVOCATION (coding, 0) = 2; \ | |
4ed46869 KH |
3613 | } while (0) |
3614 | ||
df7492f9 KH |
3615 | |
3616 | #define ENCODE_LOCKING_SHIFT_3 \ | |
3617 | do { \ | |
3618 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'n'); \ | |
3619 | CODING_ISO_INVOCATION (coding, 0) = 3; \ | |
4ed46869 KH |
3620 | } while (0) |
3621 | ||
df7492f9 | 3622 | |
f4dee582 RS |
3623 | /* Produce codes for a DIMENSION1 character whose character set is |
3624 | CHARSET and whose position-code is C1. Designation and invocation | |
4ed46869 KH |
3625 | sequences are also produced in advance if necessary. */ |
3626 | ||
6e85d753 KH |
3627 | #define ENCODE_ISO_CHARACTER_DIMENSION1(charset, c1) \ |
3628 | do { \ | |
df7492f9 | 3629 | int id = CHARSET_ID (charset); \ |
bf16eb23 KH |
3630 | \ |
3631 | if ((CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_ROMAN) \ | |
3632 | && id == charset_ascii) \ | |
3633 | { \ | |
3634 | id = charset_jisx0201_roman; \ | |
3635 | charset = CHARSET_FROM_ID (id); \ | |
3636 | } \ | |
3637 | \ | |
df7492f9 | 3638 | if (CODING_ISO_SINGLE_SHIFTING (coding)) \ |
6e85d753 | 3639 | { \ |
df7492f9 KH |
3640 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ |
3641 | EMIT_ONE_ASCII_BYTE (c1 & 0x7F); \ | |
6e85d753 | 3642 | else \ |
df7492f9 KH |
3643 | EMIT_ONE_BYTE (c1 | 0x80); \ |
3644 | CODING_ISO_SINGLE_SHIFTING (coding) = 0; \ | |
6e85d753 KH |
3645 | break; \ |
3646 | } \ | |
df7492f9 | 3647 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 0)) \ |
6e85d753 | 3648 | { \ |
df7492f9 | 3649 | EMIT_ONE_ASCII_BYTE (c1 & 0x7F); \ |
6e85d753 KH |
3650 | break; \ |
3651 | } \ | |
df7492f9 | 3652 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 1)) \ |
6e85d753 | 3653 | { \ |
df7492f9 | 3654 | EMIT_ONE_BYTE (c1 | 0x80); \ |
6e85d753 KH |
3655 | break; \ |
3656 | } \ | |
6e85d753 KH |
3657 | else \ |
3658 | /* Since CHARSET is not yet invoked to any graphic planes, we \ | |
3659 | must invoke it, or, at first, designate it to some graphic \ | |
3660 | register. Then repeat the loop to actually produce the \ | |
3661 | character. */ \ | |
df7492f9 KH |
3662 | dst = encode_invocation_designation (charset, coding, dst, \ |
3663 | &produced_chars); \ | |
4ed46869 KH |
3664 | } while (1) |
3665 | ||
df7492f9 | 3666 | |
f4dee582 RS |
3667 | /* Produce codes for a DIMENSION2 character whose character set is |
3668 | CHARSET and whose position-codes are C1 and C2. Designation and | |
4ed46869 KH |
3669 | invocation codes are also produced in advance if necessary. */ |
3670 | ||
6e85d753 KH |
3671 | #define ENCODE_ISO_CHARACTER_DIMENSION2(charset, c1, c2) \ |
3672 | do { \ | |
df7492f9 | 3673 | int id = CHARSET_ID (charset); \ |
bf16eb23 KH |
3674 | \ |
3675 | if ((CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_OLDJIS) \ | |
3676 | && id == charset_jisx0208) \ | |
3677 | { \ | |
3678 | id = charset_jisx0208_1978; \ | |
3679 | charset = CHARSET_FROM_ID (id); \ | |
3680 | } \ | |
3681 | \ | |
df7492f9 | 3682 | if (CODING_ISO_SINGLE_SHIFTING (coding)) \ |
6e85d753 | 3683 | { \ |
df7492f9 KH |
3684 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ |
3685 | EMIT_TWO_ASCII_BYTES ((c1) & 0x7F, (c2) & 0x7F); \ | |
6e85d753 | 3686 | else \ |
df7492f9 KH |
3687 | EMIT_TWO_BYTES ((c1) | 0x80, (c2) | 0x80); \ |
3688 | CODING_ISO_SINGLE_SHIFTING (coding) = 0; \ | |
6e85d753 KH |
3689 | break; \ |
3690 | } \ | |
df7492f9 | 3691 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 0)) \ |
6e85d753 | 3692 | { \ |
df7492f9 | 3693 | EMIT_TWO_ASCII_BYTES ((c1) & 0x7F, (c2) & 0x7F); \ |
6e85d753 KH |
3694 | break; \ |
3695 | } \ | |
df7492f9 | 3696 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 1)) \ |
6e85d753 | 3697 | { \ |
df7492f9 | 3698 | EMIT_TWO_BYTES ((c1) | 0x80, (c2) | 0x80); \ |
6e85d753 KH |
3699 | break; \ |
3700 | } \ | |
6e85d753 KH |
3701 | else \ |
3702 | /* Since CHARSET is not yet invoked to any graphic planes, we \ | |
3703 | must invoke it, or, at first, designate it to some graphic \ | |
3704 | register. Then repeat the loop to actually produce the \ | |
3705 | character. */ \ | |
df7492f9 KH |
3706 | dst = encode_invocation_designation (charset, coding, dst, \ |
3707 | &produced_chars); \ | |
4ed46869 KH |
3708 | } while (1) |
3709 | ||
05e6f5dc | 3710 | |
df7492f9 KH |
3711 | #define ENCODE_ISO_CHARACTER(charset, c) \ |
3712 | do { \ | |
3713 | int code = ENCODE_CHAR ((charset),(c)); \ | |
3714 | \ | |
3715 | if (CHARSET_DIMENSION (charset) == 1) \ | |
3716 | ENCODE_ISO_CHARACTER_DIMENSION1 ((charset), code); \ | |
3717 | else \ | |
3718 | ENCODE_ISO_CHARACTER_DIMENSION2 ((charset), code >> 8, code & 0xFF); \ | |
84fbb8a0 | 3719 | } while (0) |
bdd9fb48 | 3720 | |
05e6f5dc | 3721 | |
4ed46869 | 3722 | /* Produce designation and invocation codes at a place pointed by DST |
df7492f9 | 3723 | to use CHARSET. The element `spec.iso_2022' of *CODING is updated. |
4ed46869 KH |
3724 | Return new DST. */ |
3725 | ||
3726 | unsigned char * | |
df7492f9 KH |
3727 | encode_invocation_designation (charset, coding, dst, p_nchars) |
3728 | struct charset *charset; | |
4ed46869 KH |
3729 | struct coding_system *coding; |
3730 | unsigned char *dst; | |
df7492f9 | 3731 | int *p_nchars; |
4ed46869 | 3732 | { |
df7492f9 KH |
3733 | int multibytep = coding->dst_multibyte; |
3734 | int produced_chars = *p_nchars; | |
4ed46869 | 3735 | int reg; /* graphic register number */ |
df7492f9 | 3736 | int id = CHARSET_ID (charset); |
4ed46869 KH |
3737 | |
3738 | /* At first, check designations. */ | |
3739 | for (reg = 0; reg < 4; reg++) | |
df7492f9 | 3740 | if (id == CODING_ISO_DESIGNATION (coding, reg)) |
4ed46869 KH |
3741 | break; |
3742 | ||
3743 | if (reg >= 4) | |
3744 | { | |
3745 | /* CHARSET is not yet designated to any graphic registers. */ | |
3746 | /* At first check the requested designation. */ | |
df7492f9 KH |
3747 | reg = CODING_ISO_REQUEST (coding, id); |
3748 | if (reg < 0) | |
1ba9e4ab KH |
3749 | /* Since CHARSET requests no special designation, designate it |
3750 | to graphic register 0. */ | |
4ed46869 KH |
3751 | reg = 0; |
3752 | ||
3753 | ENCODE_DESIGNATION (charset, reg, coding); | |
3754 | } | |
3755 | ||
df7492f9 KH |
3756 | if (CODING_ISO_INVOCATION (coding, 0) != reg |
3757 | && CODING_ISO_INVOCATION (coding, 1) != reg) | |
4ed46869 KH |
3758 | { |
3759 | /* Since the graphic register REG is not invoked to any graphic | |
3760 | planes, invoke it to graphic plane 0. */ | |
3761 | switch (reg) | |
3762 | { | |
3763 | case 0: /* graphic register 0 */ | |
3764 | ENCODE_SHIFT_IN; | |
3765 | break; | |
3766 | ||
3767 | case 1: /* graphic register 1 */ | |
3768 | ENCODE_SHIFT_OUT; | |
3769 | break; | |
3770 | ||
3771 | case 2: /* graphic register 2 */ | |
df7492f9 | 3772 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
4ed46869 KH |
3773 | ENCODE_SINGLE_SHIFT_2; |
3774 | else | |
3775 | ENCODE_LOCKING_SHIFT_2; | |
3776 | break; | |
3777 | ||
3778 | case 3: /* graphic register 3 */ | |
df7492f9 | 3779 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
4ed46869 KH |
3780 | ENCODE_SINGLE_SHIFT_3; |
3781 | else | |
3782 | ENCODE_LOCKING_SHIFT_3; | |
3783 | break; | |
3784 | } | |
3785 | } | |
b73bfc1c | 3786 | |
df7492f9 | 3787 | *p_nchars = produced_chars; |
4ed46869 KH |
3788 | return dst; |
3789 | } | |
3790 | ||
df7492f9 KH |
3791 | /* The following three macros produce codes for indicating direction |
3792 | of text. */ | |
3793 | #define ENCODE_CONTROL_SEQUENCE_INTRODUCER \ | |
ec6d2bb8 | 3794 | do { \ |
df7492f9 KH |
3795 | if (CODING_ISO_FLAGS (coding) == CODING_ISO_FLAG_SEVEN_BITS) \ |
3796 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, '['); \ | |
ec6d2bb8 | 3797 | else \ |
df7492f9 | 3798 | EMIT_ONE_BYTE (ISO_CODE_CSI); \ |
ec6d2bb8 KH |
3799 | } while (0) |
3800 | ||
ec6d2bb8 | 3801 | |
df7492f9 KH |
3802 | #define ENCODE_DIRECTION_R2L() \ |
3803 | do { \ | |
3804 | ENCODE_CONTROL_SEQUENCE_INTRODUCER (dst); \ | |
3805 | EMIT_TWO_ASCII_BYTES ('2', ']'); \ | |
ec6d2bb8 KH |
3806 | } while (0) |
3807 | ||
ec6d2bb8 | 3808 | |
df7492f9 | 3809 | #define ENCODE_DIRECTION_L2R() \ |
ec6d2bb8 | 3810 | do { \ |
df7492f9 KH |
3811 | ENCODE_CONTROL_SEQUENCE_INTRODUCER (dst); \ |
3812 | EMIT_TWO_ASCII_BYTES ('0', ']'); \ | |
ec6d2bb8 | 3813 | } while (0) |
4ed46869 | 3814 | |
4ed46869 KH |
3815 | |
3816 | /* Produce codes for designation and invocation to reset the graphic | |
3817 | planes and registers to initial state. */ | |
df7492f9 KH |
3818 | #define ENCODE_RESET_PLANE_AND_REGISTER() \ |
3819 | do { \ | |
3820 | int reg; \ | |
3821 | struct charset *charset; \ | |
3822 | \ | |
3823 | if (CODING_ISO_INVOCATION (coding, 0) != 0) \ | |
3824 | ENCODE_SHIFT_IN; \ | |
3825 | for (reg = 0; reg < 4; reg++) \ | |
3826 | if (CODING_ISO_INITIAL (coding, reg) >= 0 \ | |
3827 | && (CODING_ISO_DESIGNATION (coding, reg) \ | |
3828 | != CODING_ISO_INITIAL (coding, reg))) \ | |
3829 | { \ | |
3830 | charset = CHARSET_FROM_ID (CODING_ISO_INITIAL (coding, reg)); \ | |
3831 | ENCODE_DESIGNATION (charset, reg, coding); \ | |
3832 | } \ | |
4ed46869 KH |
3833 | } while (0) |
3834 | ||
df7492f9 | 3835 | |
bdd9fb48 | 3836 | /* Produce designation sequences of charsets in the line started from |
b73bfc1c | 3837 | SRC to a place pointed by DST, and return updated DST. |
bdd9fb48 KH |
3838 | |
3839 | If the current block ends before any end-of-line, we may fail to | |
d46c5b12 KH |
3840 | find all the necessary designations. */ |
3841 | ||
b73bfc1c | 3842 | static unsigned char * |
df7492f9 | 3843 | encode_designation_at_bol (coding, charbuf, charbuf_end, dst) |
e0e989f6 | 3844 | struct coding_system *coding; |
df7492f9 KH |
3845 | int *charbuf, *charbuf_end; |
3846 | unsigned char *dst; | |
e0e989f6 | 3847 | { |
df7492f9 | 3848 | struct charset *charset; |
bdd9fb48 KH |
3849 | /* Table of charsets to be designated to each graphic register. */ |
3850 | int r[4]; | |
df7492f9 KH |
3851 | int c, found = 0, reg; |
3852 | int produced_chars = 0; | |
3853 | int multibytep = coding->dst_multibyte; | |
3854 | Lisp_Object attrs; | |
3855 | Lisp_Object charset_list; | |
3856 | ||
3857 | attrs = CODING_ID_ATTRS (coding->id); | |
3858 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
3859 | if (EQ (charset_list, Qiso_2022)) | |
3860 | charset_list = Viso_2022_charset_list; | |
bdd9fb48 KH |
3861 | |
3862 | for (reg = 0; reg < 4; reg++) | |
3863 | r[reg] = -1; | |
3864 | ||
b73bfc1c | 3865 | while (found < 4) |
e0e989f6 | 3866 | { |
df7492f9 KH |
3867 | int id; |
3868 | ||
3869 | c = *charbuf++; | |
b73bfc1c KH |
3870 | if (c == '\n') |
3871 | break; | |
df7492f9 KH |
3872 | charset = char_charset (c, charset_list, NULL); |
3873 | id = CHARSET_ID (charset); | |
3874 | reg = CODING_ISO_REQUEST (coding, id); | |
3875 | if (reg >= 0 && r[reg] < 0) | |
bdd9fb48 KH |
3876 | { |
3877 | found++; | |
df7492f9 | 3878 | r[reg] = id; |
bdd9fb48 | 3879 | } |
bdd9fb48 KH |
3880 | } |
3881 | ||
3882 | if (found) | |
3883 | { | |
3884 | for (reg = 0; reg < 4; reg++) | |
3885 | if (r[reg] >= 0 | |
df7492f9 KH |
3886 | && CODING_ISO_DESIGNATION (coding, reg) != r[reg]) |
3887 | ENCODE_DESIGNATION (CHARSET_FROM_ID (r[reg]), reg, coding); | |
e0e989f6 | 3888 | } |
b73bfc1c KH |
3889 | |
3890 | return dst; | |
e0e989f6 KH |
3891 | } |
3892 | ||
4ed46869 KH |
3893 | /* See the above "GENERAL NOTES on `encode_coding_XXX ()' functions". */ |
3894 | ||
df7492f9 KH |
3895 | static int |
3896 | encode_coding_iso_2022 (coding) | |
4ed46869 | 3897 | struct coding_system *coding; |
4ed46869 | 3898 | { |
df7492f9 KH |
3899 | int multibytep = coding->dst_multibyte; |
3900 | int *charbuf = coding->charbuf; | |
3901 | int *charbuf_end = charbuf + coding->charbuf_used; | |
3902 | unsigned char *dst = coding->destination + coding->produced; | |
3903 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
3904 | int safe_room = 16; | |
3905 | int bol_designation | |
3906 | = (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATE_AT_BOL | |
3907 | && CODING_ISO_BOL (coding)); | |
3908 | int produced_chars = 0; | |
3909 | Lisp_Object attrs, eol_type, charset_list; | |
3910 | int ascii_compatible; | |
b73bfc1c | 3911 | int c; |
ff0dacd7 | 3912 | int preferred_charset_id = -1; |
05e6f5dc | 3913 | |
24a73b0a KH |
3914 | CODING_GET_INFO (coding, attrs, charset_list); |
3915 | eol_type = CODING_ID_EOL_TYPE (coding->id); | |
3916 | if (VECTORP (eol_type)) | |
3917 | eol_type = Qunix; | |
3918 | ||
004068e4 | 3919 | setup_iso_safe_charsets (attrs); |
ff0dacd7 | 3920 | /* Charset list may have been changed. */ |
287c57d7 | 3921 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); |
8f924df7 | 3922 | coding->safe_charsets = (char *) SDATA (CODING_ATTR_SAFE_CHARSETS(attrs)); |
0eecad43 | 3923 | |
df7492f9 | 3924 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); |
bdd9fb48 | 3925 | |
df7492f9 | 3926 | while (charbuf < charbuf_end) |
4ed46869 | 3927 | { |
df7492f9 | 3928 | ASSURE_DESTINATION (safe_room); |
b73bfc1c | 3929 | |
df7492f9 | 3930 | if (bol_designation) |
b73bfc1c | 3931 | { |
df7492f9 | 3932 | unsigned char *dst_prev = dst; |
4ed46869 | 3933 | |
bdd9fb48 | 3934 | /* We have to produce designation sequences if any now. */ |
df7492f9 KH |
3935 | dst = encode_designation_at_bol (coding, charbuf, charbuf_end, dst); |
3936 | bol_designation = 0; | |
3937 | /* We are sure that designation sequences are all ASCII bytes. */ | |
3938 | produced_chars += dst - dst_prev; | |
e0e989f6 KH |
3939 | } |
3940 | ||
df7492f9 | 3941 | c = *charbuf++; |
ec6d2bb8 | 3942 | |
ff0dacd7 KH |
3943 | if (c < 0) |
3944 | { | |
3945 | /* Handle an annotation. */ | |
3946 | switch (*charbuf) | |
ec6d2bb8 | 3947 | { |
ff0dacd7 KH |
3948 | case CODING_ANNOTATE_COMPOSITION_MASK: |
3949 | /* Not yet implemented. */ | |
3950 | break; | |
3951 | case CODING_ANNOTATE_CHARSET_MASK: | |
cf7dfdf5 | 3952 | preferred_charset_id = charbuf[2]; |
ff0dacd7 KH |
3953 | if (preferred_charset_id >= 0 |
3954 | && NILP (Fmemq (make_number (preferred_charset_id), | |
3955 | charset_list))) | |
3956 | preferred_charset_id = -1; | |
3957 | break; | |
3958 | default: | |
3959 | abort (); | |
4ed46869 | 3960 | } |
ff0dacd7 KH |
3961 | charbuf += -c - 1; |
3962 | continue; | |
4ed46869 | 3963 | } |
ec6d2bb8 | 3964 | |
b73bfc1c KH |
3965 | /* Now encode the character C. */ |
3966 | if (c < 0x20 || c == 0x7F) | |
3967 | { | |
df7492f9 KH |
3968 | if (c == '\n' |
3969 | || (c == '\r' && EQ (eol_type, Qmac))) | |
19a8d9e0 | 3970 | { |
df7492f9 KH |
3971 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_RESET_AT_EOL) |
3972 | ENCODE_RESET_PLANE_AND_REGISTER (); | |
3973 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_INIT_AT_BOL) | |
b73bfc1c | 3974 | { |
df7492f9 KH |
3975 | int i; |
3976 | ||
3977 | for (i = 0; i < 4; i++) | |
3978 | CODING_ISO_DESIGNATION (coding, i) | |
3979 | = CODING_ISO_INITIAL (coding, i); | |
b73bfc1c | 3980 | } |
df7492f9 KH |
3981 | bol_designation |
3982 | = CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATE_AT_BOL; | |
19a8d9e0 | 3983 | } |
df7492f9 KH |
3984 | else if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_RESET_AT_CNTL) |
3985 | ENCODE_RESET_PLANE_AND_REGISTER (); | |
3986 | EMIT_ONE_ASCII_BYTE (c); | |
4ed46869 | 3987 | } |
df7492f9 | 3988 | else if (ASCII_CHAR_P (c)) |
88993dfd | 3989 | { |
df7492f9 KH |
3990 | if (ascii_compatible) |
3991 | EMIT_ONE_ASCII_BYTE (c); | |
93dec019 | 3992 | else |
19a8d9e0 | 3993 | { |
bf16eb23 KH |
3994 | struct charset *charset = CHARSET_FROM_ID (charset_ascii); |
3995 | ENCODE_ISO_CHARACTER (charset, c); | |
19a8d9e0 | 3996 | } |
4ed46869 | 3997 | } |
16eafb5d | 3998 | else if (CHAR_BYTE8_P (c)) |
88993dfd | 3999 | { |
16eafb5d KH |
4000 | c = CHAR_TO_BYTE8 (c); |
4001 | EMIT_ONE_BYTE (c); | |
88993dfd | 4002 | } |
b73bfc1c | 4003 | else |
df7492f9 | 4004 | { |
ff0dacd7 | 4005 | struct charset *charset; |
b73bfc1c | 4006 | |
ff0dacd7 KH |
4007 | if (preferred_charset_id >= 0) |
4008 | { | |
4009 | charset = CHARSET_FROM_ID (preferred_charset_id); | |
4010 | if (! CHAR_CHARSET_P (c, charset)) | |
4011 | charset = char_charset (c, charset_list, NULL); | |
4012 | } | |
4013 | else | |
4014 | charset = char_charset (c, charset_list, NULL); | |
df7492f9 KH |
4015 | if (!charset) |
4016 | { | |
41cbe562 KH |
4017 | if (coding->mode & CODING_MODE_SAFE_ENCODING) |
4018 | { | |
4019 | c = CODING_INHIBIT_CHARACTER_SUBSTITUTION; | |
4020 | charset = CHARSET_FROM_ID (charset_ascii); | |
4021 | } | |
4022 | else | |
4023 | { | |
4024 | c = coding->default_char; | |
4025 | charset = char_charset (c, charset_list, NULL); | |
4026 | } | |
df7492f9 KH |
4027 | } |
4028 | ENCODE_ISO_CHARACTER (charset, c); | |
4029 | } | |
84fbb8a0 | 4030 | } |
b73bfc1c | 4031 | |
df7492f9 KH |
4032 | if (coding->mode & CODING_MODE_LAST_BLOCK |
4033 | && CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_RESET_AT_EOL) | |
4034 | { | |
4035 | ASSURE_DESTINATION (safe_room); | |
4036 | ENCODE_RESET_PLANE_AND_REGISTER (); | |
4037 | } | |
065e3595 | 4038 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4039 | CODING_ISO_BOL (coding) = bol_designation; |
4040 | coding->produced_char += produced_chars; | |
4041 | coding->produced = dst - coding->destination; | |
4042 | return 0; | |
4ed46869 KH |
4043 | } |
4044 | ||
4045 | \f | |
df7492f9 | 4046 | /*** 8,9. SJIS and BIG5 handlers ***/ |
4ed46869 | 4047 | |
df7492f9 | 4048 | /* Although SJIS and BIG5 are not ISO's coding system, they are used |
4ed46869 KH |
4049 | quite widely. So, for the moment, Emacs supports them in the bare |
4050 | C code. But, in the future, they may be supported only by CCL. */ | |
4051 | ||
4052 | /* SJIS is a coding system encoding three character sets: ASCII, right | |
4053 | half of JISX0201-Kana, and JISX0208. An ASCII character is encoded | |
4054 | as is. A character of charset katakana-jisx0201 is encoded by | |
4055 | "position-code + 0x80". A character of charset japanese-jisx0208 | |
4056 | is encoded in 2-byte but two position-codes are divided and shifted | |
df7492f9 | 4057 | so that it fit in the range below. |
4ed46869 KH |
4058 | |
4059 | --- CODE RANGE of SJIS --- | |
4060 | (character set) (range) | |
4061 | ASCII 0x00 .. 0x7F | |
df7492f9 | 4062 | KATAKANA-JISX0201 0xA0 .. 0xDF |
c28a9453 | 4063 | JISX0208 (1st byte) 0x81 .. 0x9F and 0xE0 .. 0xEF |
d14d03ac | 4064 | (2nd byte) 0x40 .. 0x7E and 0x80 .. 0xFC |
4ed46869 KH |
4065 | ------------------------------- |
4066 | ||
4067 | */ | |
4068 | ||
4069 | /* BIG5 is a coding system encoding two character sets: ASCII and | |
4070 | Big5. An ASCII character is encoded as is. Big5 is a two-byte | |
df7492f9 | 4071 | character set and is encoded in two-byte. |
4ed46869 KH |
4072 | |
4073 | --- CODE RANGE of BIG5 --- | |
4074 | (character set) (range) | |
4075 | ASCII 0x00 .. 0x7F | |
4076 | Big5 (1st byte) 0xA1 .. 0xFE | |
4077 | (2nd byte) 0x40 .. 0x7E and 0xA1 .. 0xFE | |
4078 | -------------------------- | |
4079 | ||
df7492f9 | 4080 | */ |
4ed46869 KH |
4081 | |
4082 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
4083 | Check if a text is encoded in SJIS. If it is, return | |
df7492f9 | 4084 | CATEGORY_MASK_SJIS, else return 0. */ |
4ed46869 | 4085 | |
0a28aafb | 4086 | static int |
ff0dacd7 | 4087 | detect_coding_sjis (coding, detect_info) |
df7492f9 | 4088 | struct coding_system *coding; |
ff0dacd7 | 4089 | struct coding_detection_info *detect_info; |
4ed46869 | 4090 | { |
065e3595 | 4091 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 4092 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
4093 | int multibytep = coding->src_multibyte; |
4094 | int consumed_chars = 0; | |
4095 | int found = 0; | |
b73bfc1c | 4096 | int c; |
df7492f9 | 4097 | |
ff0dacd7 | 4098 | detect_info->checked |= CATEGORY_MASK_SJIS; |
df7492f9 KH |
4099 | /* A coding system of this category is always ASCII compatible. */ |
4100 | src += coding->head_ascii; | |
4ed46869 | 4101 | |
b73bfc1c | 4102 | while (1) |
4ed46869 | 4103 | { |
065e3595 | 4104 | src_base = src; |
df7492f9 | 4105 | ONE_MORE_BYTE (c); |
682169fe KH |
4106 | if (c < 0x80) |
4107 | continue; | |
df7492f9 | 4108 | if ((c >= 0x81 && c <= 0x9F) || (c >= 0xE0 && c <= 0xEF)) |
4ed46869 | 4109 | { |
df7492f9 | 4110 | ONE_MORE_BYTE (c); |
682169fe | 4111 | if (c < 0x40 || c == 0x7F || c > 0xFC) |
df7492f9 | 4112 | break; |
ff0dacd7 | 4113 | found = CATEGORY_MASK_SJIS; |
4ed46869 | 4114 | } |
df7492f9 | 4115 | else if (c >= 0xA0 && c < 0xE0) |
ff0dacd7 | 4116 | found = CATEGORY_MASK_SJIS; |
df7492f9 KH |
4117 | else |
4118 | break; | |
4ed46869 | 4119 | } |
ff0dacd7 | 4120 | detect_info->rejected |= CATEGORY_MASK_SJIS; |
df7492f9 KH |
4121 | return 0; |
4122 | ||
4123 | no_more_source: | |
065e3595 | 4124 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
89528eb3 | 4125 | { |
ff0dacd7 | 4126 | detect_info->rejected |= CATEGORY_MASK_SJIS; |
89528eb3 | 4127 | return 0; |
4ed46869 | 4128 | } |
ff0dacd7 KH |
4129 | detect_info->found |= found; |
4130 | return 1; | |
4ed46869 KH |
4131 | } |
4132 | ||
4133 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
4134 | Check if a text is encoded in BIG5. If it is, return | |
df7492f9 | 4135 | CATEGORY_MASK_BIG5, else return 0. */ |
4ed46869 | 4136 | |
0a28aafb | 4137 | static int |
ff0dacd7 | 4138 | detect_coding_big5 (coding, detect_info) |
df7492f9 | 4139 | struct coding_system *coding; |
ff0dacd7 | 4140 | struct coding_detection_info *detect_info; |
4ed46869 | 4141 | { |
065e3595 | 4142 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 4143 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
4144 | int multibytep = coding->src_multibyte; |
4145 | int consumed_chars = 0; | |
4146 | int found = 0; | |
b73bfc1c | 4147 | int c; |
fa42c37f | 4148 | |
ff0dacd7 | 4149 | detect_info->checked |= CATEGORY_MASK_BIG5; |
df7492f9 KH |
4150 | /* A coding system of this category is always ASCII compatible. */ |
4151 | src += coding->head_ascii; | |
fa42c37f | 4152 | |
b73bfc1c | 4153 | while (1) |
fa42c37f | 4154 | { |
065e3595 | 4155 | src_base = src; |
df7492f9 KH |
4156 | ONE_MORE_BYTE (c); |
4157 | if (c < 0x80) | |
fa42c37f | 4158 | continue; |
df7492f9 | 4159 | if (c >= 0xA1) |
fa42c37f | 4160 | { |
df7492f9 KH |
4161 | ONE_MORE_BYTE (c); |
4162 | if (c < 0x40 || (c >= 0x7F && c <= 0xA0)) | |
fa42c37f | 4163 | return 0; |
ff0dacd7 | 4164 | found = CATEGORY_MASK_BIG5; |
fa42c37f | 4165 | } |
df7492f9 KH |
4166 | else |
4167 | break; | |
fa42c37f | 4168 | } |
ff0dacd7 | 4169 | detect_info->rejected |= CATEGORY_MASK_BIG5; |
fa42c37f | 4170 | return 0; |
fa42c37f | 4171 | |
df7492f9 | 4172 | no_more_source: |
065e3595 | 4173 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
89528eb3 | 4174 | { |
ff0dacd7 | 4175 | detect_info->rejected |= CATEGORY_MASK_BIG5; |
89528eb3 KH |
4176 | return 0; |
4177 | } | |
ff0dacd7 KH |
4178 | detect_info->found |= found; |
4179 | return 1; | |
fa42c37f KH |
4180 | } |
4181 | ||
4ed46869 KH |
4182 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". |
4183 | If SJIS_P is 1, decode SJIS text, else decode BIG5 test. */ | |
fa42c37f | 4184 | |
b73bfc1c | 4185 | static void |
df7492f9 | 4186 | decode_coding_sjis (coding) |
4ed46869 | 4187 | struct coding_system *coding; |
4ed46869 | 4188 | { |
8f924df7 KH |
4189 | const unsigned char *src = coding->source + coding->consumed; |
4190 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
4191 | const unsigned char *src_base; | |
69a80ea3 KH |
4192 | int *charbuf = coding->charbuf + coding->charbuf_used; |
4193 | int *charbuf_end | |
4194 | = coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH; | |
df7492f9 KH |
4195 | int consumed_chars = 0, consumed_chars_base; |
4196 | int multibytep = coding->src_multibyte; | |
4197 | struct charset *charset_roman, *charset_kanji, *charset_kana; | |
57a47f8a | 4198 | struct charset *charset_kanji2; |
24a73b0a | 4199 | Lisp_Object attrs, charset_list, val; |
ff0dacd7 KH |
4200 | int char_offset = coding->produced_char; |
4201 | int last_offset = char_offset; | |
4202 | int last_id = charset_ascii; | |
119852e7 KH |
4203 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
4204 | int byte_after_cr = -1; | |
a5d301df | 4205 | |
24a73b0a | 4206 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4207 | |
4208 | val = charset_list; | |
4209 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
89528eb3 | 4210 | charset_kana = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
57a47f8a KH |
4211 | charset_kanji = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
4212 | charset_kanji2 = NILP (val) ? NULL : CHARSET_FROM_ID (XINT (XCAR (val))); | |
fa42c37f | 4213 | |
b73bfc1c | 4214 | while (1) |
4ed46869 | 4215 | { |
df7492f9 | 4216 | int c, c1; |
24a73b0a | 4217 | struct charset *charset; |
fa42c37f | 4218 | |
b73bfc1c | 4219 | src_base = src; |
df7492f9 | 4220 | consumed_chars_base = consumed_chars; |
fa42c37f | 4221 | |
df7492f9 KH |
4222 | if (charbuf >= charbuf_end) |
4223 | break; | |
4224 | ||
119852e7 KH |
4225 | if (byte_after_cr >= 0) |
4226 | c = byte_after_cr, byte_after_cr = -1; | |
4227 | else | |
4228 | ONE_MORE_BYTE (c); | |
065e3595 KH |
4229 | if (c < 0) |
4230 | goto invalid_code; | |
24a73b0a | 4231 | if (c < 0x80) |
119852e7 KH |
4232 | { |
4233 | if (eol_crlf && c == '\r') | |
4234 | ONE_MORE_BYTE (byte_after_cr); | |
4235 | charset = charset_roman; | |
4236 | } | |
57a47f8a | 4237 | else if (c == 0x80 || c == 0xA0) |
8e921c4b | 4238 | goto invalid_code; |
57a47f8a KH |
4239 | else if (c >= 0xA1 && c <= 0xDF) |
4240 | { | |
4241 | /* SJIS -> JISX0201-Kana */ | |
4242 | c &= 0x7F; | |
4243 | charset = charset_kana; | |
4244 | } | |
4245 | else if (c <= 0xEF) | |
df7492f9 | 4246 | { |
57a47f8a KH |
4247 | /* SJIS -> JISX0208 */ |
4248 | ONE_MORE_BYTE (c1); | |
4249 | if (c1 < 0x40 || c1 == 0x7F || c1 > 0xFC) | |
24a73b0a | 4250 | goto invalid_code; |
57a47f8a KH |
4251 | c = (c << 8) | c1; |
4252 | SJIS_TO_JIS (c); | |
4253 | charset = charset_kanji; | |
4254 | } | |
4255 | else if (c <= 0xFC && charset_kanji2) | |
4256 | { | |
c6876370 | 4257 | /* SJIS -> JISX0213-2 */ |
57a47f8a KH |
4258 | ONE_MORE_BYTE (c1); |
4259 | if (c1 < 0x40 || c1 == 0x7F || c1 > 0xFC) | |
24a73b0a | 4260 | goto invalid_code; |
57a47f8a KH |
4261 | c = (c << 8) | c1; |
4262 | SJIS_TO_JIS2 (c); | |
4263 | charset = charset_kanji2; | |
df7492f9 | 4264 | } |
57a47f8a KH |
4265 | else |
4266 | goto invalid_code; | |
24a73b0a KH |
4267 | if (charset->id != charset_ascii |
4268 | && last_id != charset->id) | |
4269 | { | |
4270 | if (last_id != charset_ascii) | |
69a80ea3 | 4271 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
24a73b0a KH |
4272 | last_id = charset->id; |
4273 | last_offset = char_offset; | |
4274 | } | |
4275 | CODING_DECODE_CHAR (coding, src, src_base, src_end, charset, c, c); | |
df7492f9 | 4276 | *charbuf++ = c; |
ff0dacd7 | 4277 | char_offset++; |
df7492f9 | 4278 | continue; |
b73bfc1c | 4279 | |
df7492f9 KH |
4280 | invalid_code: |
4281 | src = src_base; | |
4282 | consumed_chars = consumed_chars_base; | |
4283 | ONE_MORE_BYTE (c); | |
065e3595 | 4284 | *charbuf++ = c < 0 ? -c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 4285 | char_offset++; |
df7492f9 KH |
4286 | coding->errors++; |
4287 | } | |
fa42c37f | 4288 | |
df7492f9 | 4289 | no_more_source: |
ff0dacd7 | 4290 | if (last_id != charset_ascii) |
69a80ea3 | 4291 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
4292 | coding->consumed_char += consumed_chars_base; |
4293 | coding->consumed = src_base - coding->source; | |
4294 | coding->charbuf_used = charbuf - coding->charbuf; | |
fa42c37f KH |
4295 | } |
4296 | ||
b73bfc1c | 4297 | static void |
df7492f9 | 4298 | decode_coding_big5 (coding) |
4ed46869 | 4299 | struct coding_system *coding; |
4ed46869 | 4300 | { |
8f924df7 KH |
4301 | const unsigned char *src = coding->source + coding->consumed; |
4302 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
4303 | const unsigned char *src_base; | |
69a80ea3 KH |
4304 | int *charbuf = coding->charbuf + coding->charbuf_used; |
4305 | int *charbuf_end | |
4306 | = coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH; | |
df7492f9 KH |
4307 | int consumed_chars = 0, consumed_chars_base; |
4308 | int multibytep = coding->src_multibyte; | |
4309 | struct charset *charset_roman, *charset_big5; | |
24a73b0a | 4310 | Lisp_Object attrs, charset_list, val; |
ff0dacd7 KH |
4311 | int char_offset = coding->produced_char; |
4312 | int last_offset = char_offset; | |
4313 | int last_id = charset_ascii; | |
119852e7 KH |
4314 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
4315 | int byte_after_cr = -1; | |
df7492f9 | 4316 | |
24a73b0a | 4317 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4318 | val = charset_list; |
4319 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
4320 | charset_big5 = CHARSET_FROM_ID (XINT (XCAR (val))); | |
4ed46869 | 4321 | |
b73bfc1c | 4322 | while (1) |
4ed46869 | 4323 | { |
df7492f9 | 4324 | int c, c1; |
24a73b0a | 4325 | struct charset *charset; |
b73bfc1c KH |
4326 | |
4327 | src_base = src; | |
df7492f9 KH |
4328 | consumed_chars_base = consumed_chars; |
4329 | ||
4330 | if (charbuf >= charbuf_end) | |
4331 | break; | |
4332 | ||
119852e7 | 4333 | if (byte_after_cr >= 0) |
14daee73 | 4334 | c = byte_after_cr, byte_after_cr = -1; |
119852e7 KH |
4335 | else |
4336 | ONE_MORE_BYTE (c); | |
b73bfc1c | 4337 | |
065e3595 KH |
4338 | if (c < 0) |
4339 | goto invalid_code; | |
24a73b0a | 4340 | if (c < 0x80) |
119852e7 | 4341 | { |
14daee73 | 4342 | if (eol_crlf && c == '\r') |
119852e7 KH |
4343 | ONE_MORE_BYTE (byte_after_cr); |
4344 | charset = charset_roman; | |
4345 | } | |
24a73b0a | 4346 | else |
4ed46869 | 4347 | { |
24a73b0a KH |
4348 | /* BIG5 -> Big5 */ |
4349 | if (c < 0xA1 || c > 0xFE) | |
4350 | goto invalid_code; | |
4351 | ONE_MORE_BYTE (c1); | |
4352 | if (c1 < 0x40 || (c1 > 0x7E && c1 < 0xA1) || c1 > 0xFE) | |
4353 | goto invalid_code; | |
4354 | c = c << 8 | c1; | |
4355 | charset = charset_big5; | |
4ed46869 | 4356 | } |
24a73b0a KH |
4357 | if (charset->id != charset_ascii |
4358 | && last_id != charset->id) | |
df7492f9 | 4359 | { |
24a73b0a | 4360 | if (last_id != charset_ascii) |
69a80ea3 | 4361 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
24a73b0a KH |
4362 | last_id = charset->id; |
4363 | last_offset = char_offset; | |
4ed46869 | 4364 | } |
24a73b0a | 4365 | CODING_DECODE_CHAR (coding, src, src_base, src_end, charset, c, c); |
df7492f9 | 4366 | *charbuf++ = c; |
ff0dacd7 | 4367 | char_offset++; |
fb88bf2d KH |
4368 | continue; |
4369 | ||
df7492f9 | 4370 | invalid_code: |
4ed46869 | 4371 | src = src_base; |
df7492f9 KH |
4372 | consumed_chars = consumed_chars_base; |
4373 | ONE_MORE_BYTE (c); | |
065e3595 | 4374 | *charbuf++ = c < 0 ? -c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 4375 | char_offset++; |
df7492f9 | 4376 | coding->errors++; |
fb88bf2d | 4377 | } |
d46c5b12 | 4378 | |
df7492f9 | 4379 | no_more_source: |
ff0dacd7 | 4380 | if (last_id != charset_ascii) |
69a80ea3 | 4381 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
4382 | coding->consumed_char += consumed_chars_base; |
4383 | coding->consumed = src_base - coding->source; | |
4384 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
4385 | } |
4386 | ||
4387 | /* See the above "GENERAL NOTES on `encode_coding_XXX ()' functions". | |
b73bfc1c KH |
4388 | This function can encode charsets `ascii', `katakana-jisx0201', |
4389 | `japanese-jisx0208', `chinese-big5-1', and `chinese-big5-2'. We | |
4390 | are sure that all these charsets are registered as official charset | |
4ed46869 KH |
4391 | (i.e. do not have extended leading-codes). Characters of other |
4392 | charsets are produced without any encoding. If SJIS_P is 1, encode | |
4393 | SJIS text, else encode BIG5 text. */ | |
4394 | ||
df7492f9 KH |
4395 | static int |
4396 | encode_coding_sjis (coding) | |
4ed46869 | 4397 | struct coding_system *coding; |
4ed46869 | 4398 | { |
df7492f9 KH |
4399 | int multibytep = coding->dst_multibyte; |
4400 | int *charbuf = coding->charbuf; | |
4401 | int *charbuf_end = charbuf + coding->charbuf_used; | |
4402 | unsigned char *dst = coding->destination + coding->produced; | |
4403 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
4404 | int safe_room = 4; | |
4405 | int produced_chars = 0; | |
24a73b0a | 4406 | Lisp_Object attrs, charset_list, val; |
df7492f9 KH |
4407 | int ascii_compatible; |
4408 | struct charset *charset_roman, *charset_kanji, *charset_kana; | |
57a47f8a | 4409 | struct charset *charset_kanji2; |
df7492f9 | 4410 | int c; |
a5d301df | 4411 | |
24a73b0a | 4412 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4413 | val = charset_list; |
4414 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
4415 | charset_kana = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
57a47f8a KH |
4416 | charset_kanji = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
4417 | charset_kanji2 = NILP (val) ? NULL : CHARSET_FROM_ID (XINT (XCAR (val))); | |
4ed46869 | 4418 | |
df7492f9 | 4419 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); |
93dec019 | 4420 | |
df7492f9 KH |
4421 | while (charbuf < charbuf_end) |
4422 | { | |
4423 | ASSURE_DESTINATION (safe_room); | |
4424 | c = *charbuf++; | |
b73bfc1c | 4425 | /* Now encode the character C. */ |
df7492f9 KH |
4426 | if (ASCII_CHAR_P (c) && ascii_compatible) |
4427 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d KH |
4428 | else if (CHAR_BYTE8_P (c)) |
4429 | { | |
4430 | c = CHAR_TO_BYTE8 (c); | |
4431 | EMIT_ONE_BYTE (c); | |
4432 | } | |
df7492f9 | 4433 | else |
b73bfc1c | 4434 | { |
df7492f9 KH |
4435 | unsigned code; |
4436 | struct charset *charset = char_charset (c, charset_list, &code); | |
4437 | ||
4438 | if (!charset) | |
4ed46869 | 4439 | { |
41cbe562 | 4440 | if (coding->mode & CODING_MODE_SAFE_ENCODING) |
b73bfc1c | 4441 | { |
41cbe562 KH |
4442 | code = CODING_INHIBIT_CHARACTER_SUBSTITUTION; |
4443 | charset = CHARSET_FROM_ID (charset_ascii); | |
b73bfc1c | 4444 | } |
41cbe562 | 4445 | else |
b73bfc1c | 4446 | { |
41cbe562 KH |
4447 | c = coding->default_char; |
4448 | charset = char_charset (c, charset_list, &code); | |
b73bfc1c | 4449 | } |
b73bfc1c | 4450 | } |
df7492f9 KH |
4451 | if (code == CHARSET_INVALID_CODE (charset)) |
4452 | abort (); | |
4453 | if (charset == charset_kanji) | |
4454 | { | |
4455 | int c1, c2; | |
4456 | JIS_TO_SJIS (code); | |
4457 | c1 = code >> 8, c2 = code & 0xFF; | |
4458 | EMIT_TWO_BYTES (c1, c2); | |
4459 | } | |
4460 | else if (charset == charset_kana) | |
4461 | EMIT_ONE_BYTE (code | 0x80); | |
57a47f8a KH |
4462 | else if (charset_kanji2 && charset == charset_kanji2) |
4463 | { | |
4464 | int c1, c2; | |
4465 | ||
4466 | c1 = code >> 8; | |
4467 | if (c1 == 0x21 || (c1 >= 0x23 && c1 < 0x25) | |
4468 | || (c1 >= 0x2C && c1 <= 0x2F) || c1 >= 0x6E) | |
4469 | { | |
4470 | JIS_TO_SJIS2 (code); | |
4471 | c1 = code >> 8, c2 = code & 0xFF; | |
4472 | EMIT_TWO_BYTES (c1, c2); | |
4473 | } | |
4474 | else | |
4475 | EMIT_ONE_ASCII_BYTE (code & 0x7F); | |
4476 | } | |
df7492f9 KH |
4477 | else |
4478 | EMIT_ONE_ASCII_BYTE (code & 0x7F); | |
4479 | } | |
4480 | } | |
065e3595 | 4481 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4482 | coding->produced_char += produced_chars; |
4483 | coding->produced = dst - coding->destination; | |
4484 | return 0; | |
4485 | } | |
4486 | ||
4487 | static int | |
4488 | encode_coding_big5 (coding) | |
4489 | struct coding_system *coding; | |
4490 | { | |
4491 | int multibytep = coding->dst_multibyte; | |
4492 | int *charbuf = coding->charbuf; | |
4493 | int *charbuf_end = charbuf + coding->charbuf_used; | |
4494 | unsigned char *dst = coding->destination + coding->produced; | |
4495 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
4496 | int safe_room = 4; | |
4497 | int produced_chars = 0; | |
24a73b0a | 4498 | Lisp_Object attrs, charset_list, val; |
df7492f9 KH |
4499 | int ascii_compatible; |
4500 | struct charset *charset_roman, *charset_big5; | |
4501 | int c; | |
4502 | ||
24a73b0a | 4503 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4504 | val = charset_list; |
4505 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
4506 | charset_big5 = CHARSET_FROM_ID (XINT (XCAR (val))); | |
4507 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); | |
4508 | ||
4509 | while (charbuf < charbuf_end) | |
4510 | { | |
4511 | ASSURE_DESTINATION (safe_room); | |
4512 | c = *charbuf++; | |
4513 | /* Now encode the character C. */ | |
4514 | if (ASCII_CHAR_P (c) && ascii_compatible) | |
4515 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d KH |
4516 | else if (CHAR_BYTE8_P (c)) |
4517 | { | |
4518 | c = CHAR_TO_BYTE8 (c); | |
4519 | EMIT_ONE_BYTE (c); | |
b73bfc1c KH |
4520 | } |
4521 | else | |
4522 | { | |
df7492f9 KH |
4523 | unsigned code; |
4524 | struct charset *charset = char_charset (c, charset_list, &code); | |
4525 | ||
4526 | if (! charset) | |
b73bfc1c | 4527 | { |
41cbe562 | 4528 | if (coding->mode & CODING_MODE_SAFE_ENCODING) |
b73bfc1c | 4529 | { |
41cbe562 KH |
4530 | code = CODING_INHIBIT_CHARACTER_SUBSTITUTION; |
4531 | charset = CHARSET_FROM_ID (charset_ascii); | |
b73bfc1c | 4532 | } |
41cbe562 | 4533 | else |
0eecad43 | 4534 | { |
41cbe562 KH |
4535 | c = coding->default_char; |
4536 | charset = char_charset (c, charset_list, &code); | |
0eecad43 | 4537 | } |
4ed46869 | 4538 | } |
df7492f9 KH |
4539 | if (code == CHARSET_INVALID_CODE (charset)) |
4540 | abort (); | |
4541 | if (charset == charset_big5) | |
b73bfc1c | 4542 | { |
df7492f9 KH |
4543 | int c1, c2; |
4544 | ||
4545 | c1 = code >> 8, c2 = code & 0xFF; | |
4546 | EMIT_TWO_BYTES (c1, c2); | |
b73bfc1c | 4547 | } |
df7492f9 KH |
4548 | else |
4549 | EMIT_ONE_ASCII_BYTE (code & 0x7F); | |
4ed46869 | 4550 | } |
4ed46869 | 4551 | } |
065e3595 | 4552 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4553 | coding->produced_char += produced_chars; |
4554 | coding->produced = dst - coding->destination; | |
4555 | return 0; | |
4ed46869 KH |
4556 | } |
4557 | ||
4558 | \f | |
df7492f9 | 4559 | /*** 10. CCL handlers ***/ |
1397dc18 KH |
4560 | |
4561 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
4562 | Check if a text is encoded in a coding system of which | |
4563 | encoder/decoder are written in CCL program. If it is, return | |
df7492f9 | 4564 | CATEGORY_MASK_CCL, else return 0. */ |
1397dc18 | 4565 | |
0a28aafb | 4566 | static int |
ff0dacd7 | 4567 | detect_coding_ccl (coding, detect_info) |
df7492f9 | 4568 | struct coding_system *coding; |
ff0dacd7 | 4569 | struct coding_detection_info *detect_info; |
1397dc18 | 4570 | { |
065e3595 | 4571 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 4572 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
4573 | int multibytep = coding->src_multibyte; |
4574 | int consumed_chars = 0; | |
4575 | int found = 0; | |
0e219d54 | 4576 | unsigned char *valids; |
df7492f9 KH |
4577 | int head_ascii = coding->head_ascii; |
4578 | Lisp_Object attrs; | |
4579 | ||
ff0dacd7 KH |
4580 | detect_info->checked |= CATEGORY_MASK_CCL; |
4581 | ||
df7492f9 | 4582 | coding = &coding_categories[coding_category_ccl]; |
0e219d54 | 4583 | valids = CODING_CCL_VALIDS (coding); |
df7492f9 KH |
4584 | attrs = CODING_ID_ATTRS (coding->id); |
4585 | if (! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
4586 | src += head_ascii; | |
1397dc18 | 4587 | |
b73bfc1c | 4588 | while (1) |
1397dc18 | 4589 | { |
df7492f9 | 4590 | int c; |
065e3595 KH |
4591 | |
4592 | src_base = src; | |
df7492f9 | 4593 | ONE_MORE_BYTE (c); |
065e3595 | 4594 | if (c < 0 || ! valids[c]) |
df7492f9 | 4595 | break; |
ff0dacd7 KH |
4596 | if ((valids[c] > 1)) |
4597 | found = CATEGORY_MASK_CCL; | |
df7492f9 | 4598 | } |
ff0dacd7 | 4599 | detect_info->rejected |= CATEGORY_MASK_CCL; |
df7492f9 KH |
4600 | return 0; |
4601 | ||
4602 | no_more_source: | |
ff0dacd7 KH |
4603 | detect_info->found |= found; |
4604 | return 1; | |
df7492f9 KH |
4605 | } |
4606 | ||
4607 | static void | |
4608 | decode_coding_ccl (coding) | |
4609 | struct coding_system *coding; | |
4610 | { | |
7c78e542 | 4611 | const unsigned char *src = coding->source + coding->consumed; |
8f924df7 | 4612 | const unsigned char *src_end = coding->source + coding->src_bytes; |
69a80ea3 KH |
4613 | int *charbuf = coding->charbuf + coding->charbuf_used; |
4614 | int *charbuf_end = coding->charbuf + coding->charbuf_size; | |
df7492f9 KH |
4615 | int consumed_chars = 0; |
4616 | int multibytep = coding->src_multibyte; | |
4617 | struct ccl_program ccl; | |
4618 | int source_charbuf[1024]; | |
4619 | int source_byteidx[1024]; | |
24a73b0a | 4620 | Lisp_Object attrs, charset_list; |
df7492f9 | 4621 | |
24a73b0a | 4622 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4623 | setup_ccl_program (&ccl, CODING_CCL_DECODER (coding)); |
4624 | ||
4625 | while (src < src_end) | |
4626 | { | |
7c78e542 | 4627 | const unsigned char *p = src; |
df7492f9 KH |
4628 | int *source, *source_end; |
4629 | int i = 0; | |
4630 | ||
4631 | if (multibytep) | |
4632 | while (i < 1024 && p < src_end) | |
4633 | { | |
4634 | source_byteidx[i] = p - src; | |
4635 | source_charbuf[i++] = STRING_CHAR_ADVANCE (p); | |
4636 | } | |
4637 | else | |
4638 | while (i < 1024 && p < src_end) | |
4639 | source_charbuf[i++] = *p++; | |
8f924df7 | 4640 | |
df7492f9 KH |
4641 | if (p == src_end && coding->mode & CODING_MODE_LAST_BLOCK) |
4642 | ccl.last_block = 1; | |
4643 | ||
4644 | source = source_charbuf; | |
4645 | source_end = source + i; | |
4646 | while (source < source_end) | |
4647 | { | |
4648 | ccl_driver (&ccl, source, charbuf, | |
8dcbea82 KH |
4649 | source_end - source, charbuf_end - charbuf, |
4650 | charset_list); | |
df7492f9 KH |
4651 | source += ccl.consumed; |
4652 | charbuf += ccl.produced; | |
4653 | if (ccl.status != CCL_STAT_SUSPEND_BY_DST) | |
4654 | break; | |
4655 | } | |
4656 | if (source < source_end) | |
4657 | src += source_byteidx[source - source_charbuf]; | |
4658 | else | |
4659 | src = p; | |
4660 | consumed_chars += source - source_charbuf; | |
4661 | ||
4662 | if (ccl.status != CCL_STAT_SUSPEND_BY_SRC | |
4663 | && ccl.status != CODING_RESULT_INSUFFICIENT_SRC) | |
4664 | break; | |
4665 | } | |
4666 | ||
4667 | switch (ccl.status) | |
4668 | { | |
4669 | case CCL_STAT_SUSPEND_BY_SRC: | |
065e3595 | 4670 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_SRC); |
df7492f9 KH |
4671 | break; |
4672 | case CCL_STAT_SUSPEND_BY_DST: | |
4673 | break; | |
4674 | case CCL_STAT_QUIT: | |
4675 | case CCL_STAT_INVALID_CMD: | |
065e3595 | 4676 | record_conversion_result (coding, CODING_RESULT_INTERRUPT); |
df7492f9 KH |
4677 | break; |
4678 | default: | |
065e3595 | 4679 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4680 | break; |
4681 | } | |
4682 | coding->consumed_char += consumed_chars; | |
4683 | coding->consumed = src - coding->source; | |
4684 | coding->charbuf_used = charbuf - coding->charbuf; | |
4685 | } | |
4686 | ||
4687 | static int | |
4688 | encode_coding_ccl (coding) | |
4689 | struct coding_system *coding; | |
4690 | { | |
4691 | struct ccl_program ccl; | |
4692 | int multibytep = coding->dst_multibyte; | |
4693 | int *charbuf = coding->charbuf; | |
4694 | int *charbuf_end = charbuf + coding->charbuf_used; | |
4695 | unsigned char *dst = coding->destination + coding->produced; | |
4696 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
df7492f9 KH |
4697 | int destination_charbuf[1024]; |
4698 | int i, produced_chars = 0; | |
24a73b0a | 4699 | Lisp_Object attrs, charset_list; |
df7492f9 | 4700 | |
24a73b0a | 4701 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4702 | setup_ccl_program (&ccl, CODING_CCL_ENCODER (coding)); |
4703 | ||
4704 | ccl.last_block = coding->mode & CODING_MODE_LAST_BLOCK; | |
4705 | ccl.dst_multibyte = coding->dst_multibyte; | |
4706 | ||
8cffd3e7 | 4707 | while (charbuf < charbuf_end) |
df7492f9 | 4708 | { |
df7492f9 | 4709 | ccl_driver (&ccl, charbuf, destination_charbuf, |
8cffd3e7 | 4710 | charbuf_end - charbuf, 1024, charset_list); |
df7492f9 | 4711 | if (multibytep) |
8cffd3e7 KH |
4712 | { |
4713 | ASSURE_DESTINATION (ccl.produced * 2); | |
4714 | for (i = 0; i < ccl.produced; i++) | |
4715 | EMIT_ONE_BYTE (destination_charbuf[i] & 0xFF); | |
4716 | } | |
df7492f9 KH |
4717 | else |
4718 | { | |
8cffd3e7 | 4719 | ASSURE_DESTINATION (ccl.produced); |
df7492f9 KH |
4720 | for (i = 0; i < ccl.produced; i++) |
4721 | *dst++ = destination_charbuf[i] & 0xFF; | |
4722 | produced_chars += ccl.produced; | |
4723 | } | |
8cffd3e7 KH |
4724 | charbuf += ccl.consumed; |
4725 | if (ccl.status == CCL_STAT_QUIT | |
4726 | || ccl.status == CCL_STAT_INVALID_CMD) | |
4727 | break; | |
df7492f9 KH |
4728 | } |
4729 | ||
4730 | switch (ccl.status) | |
4731 | { | |
4732 | case CCL_STAT_SUSPEND_BY_SRC: | |
065e3595 | 4733 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_SRC); |
df7492f9 KH |
4734 | break; |
4735 | case CCL_STAT_SUSPEND_BY_DST: | |
065e3595 | 4736 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_DST); |
df7492f9 KH |
4737 | break; |
4738 | case CCL_STAT_QUIT: | |
4739 | case CCL_STAT_INVALID_CMD: | |
065e3595 | 4740 | record_conversion_result (coding, CODING_RESULT_INTERRUPT); |
df7492f9 KH |
4741 | break; |
4742 | default: | |
065e3595 | 4743 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 | 4744 | break; |
1397dc18 | 4745 | } |
df7492f9 KH |
4746 | |
4747 | coding->produced_char += produced_chars; | |
4748 | coding->produced = dst - coding->destination; | |
4749 | return 0; | |
1397dc18 KH |
4750 | } |
4751 | ||
df7492f9 | 4752 | |
1397dc18 | 4753 | \f |
df7492f9 | 4754 | /*** 10, 11. no-conversion handlers ***/ |
4ed46869 | 4755 | |
b73bfc1c | 4756 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". */ |
4ed46869 | 4757 | |
b73bfc1c | 4758 | static void |
df7492f9 | 4759 | decode_coding_raw_text (coding) |
4ed46869 | 4760 | struct coding_system *coding; |
4ed46869 | 4761 | { |
119852e7 KH |
4762 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
4763 | ||
df7492f9 | 4764 | coding->chars_at_source = 1; |
119852e7 KH |
4765 | coding->consumed_char = coding->src_chars; |
4766 | coding->consumed = coding->src_bytes; | |
4767 | if (eol_crlf && coding->source[coding->src_bytes - 1] == '\r') | |
4768 | { | |
4769 | coding->consumed_char--; | |
4770 | coding->consumed--; | |
4771 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_SRC); | |
4772 | } | |
4773 | else | |
4774 | record_conversion_result (coding, CODING_RESULT_SUCCESS); | |
df7492f9 | 4775 | } |
4ed46869 | 4776 | |
df7492f9 KH |
4777 | static int |
4778 | encode_coding_raw_text (coding) | |
4779 | struct coding_system *coding; | |
4780 | { | |
4781 | int multibytep = coding->dst_multibyte; | |
4782 | int *charbuf = coding->charbuf; | |
4783 | int *charbuf_end = coding->charbuf + coding->charbuf_used; | |
4784 | unsigned char *dst = coding->destination + coding->produced; | |
4785 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
4786 | int produced_chars = 0; | |
b73bfc1c KH |
4787 | int c; |
4788 | ||
df7492f9 | 4789 | if (multibytep) |
b73bfc1c | 4790 | { |
df7492f9 | 4791 | int safe_room = MAX_MULTIBYTE_LENGTH * 2; |
4ed46869 | 4792 | |
df7492f9 KH |
4793 | if (coding->src_multibyte) |
4794 | while (charbuf < charbuf_end) | |
4795 | { | |
4796 | ASSURE_DESTINATION (safe_room); | |
4797 | c = *charbuf++; | |
4798 | if (ASCII_CHAR_P (c)) | |
4799 | EMIT_ONE_ASCII_BYTE (c); | |
4800 | else if (CHAR_BYTE8_P (c)) | |
4801 | { | |
4802 | c = CHAR_TO_BYTE8 (c); | |
4803 | EMIT_ONE_BYTE (c); | |
4804 | } | |
4805 | else | |
4806 | { | |
4807 | unsigned char str[MAX_MULTIBYTE_LENGTH], *p0 = str, *p1 = str; | |
93dec019 | 4808 | |
df7492f9 KH |
4809 | CHAR_STRING_ADVANCE (c, p1); |
4810 | while (p0 < p1) | |
9d123124 KH |
4811 | { |
4812 | EMIT_ONE_BYTE (*p0); | |
4813 | p0++; | |
4814 | } | |
df7492f9 KH |
4815 | } |
4816 | } | |
b73bfc1c | 4817 | else |
df7492f9 KH |
4818 | while (charbuf < charbuf_end) |
4819 | { | |
4820 | ASSURE_DESTINATION (safe_room); | |
4821 | c = *charbuf++; | |
4822 | EMIT_ONE_BYTE (c); | |
4823 | } | |
4824 | } | |
4825 | else | |
4ed46869 | 4826 | { |
df7492f9 | 4827 | if (coding->src_multibyte) |
d46c5b12 | 4828 | { |
df7492f9 KH |
4829 | int safe_room = MAX_MULTIBYTE_LENGTH; |
4830 | ||
4831 | while (charbuf < charbuf_end) | |
d46c5b12 | 4832 | { |
df7492f9 KH |
4833 | ASSURE_DESTINATION (safe_room); |
4834 | c = *charbuf++; | |
4835 | if (ASCII_CHAR_P (c)) | |
4836 | *dst++ = c; | |
4837 | else if (CHAR_BYTE8_P (c)) | |
4838 | *dst++ = CHAR_TO_BYTE8 (c); | |
b73bfc1c | 4839 | else |
df7492f9 KH |
4840 | CHAR_STRING_ADVANCE (c, dst); |
4841 | produced_chars++; | |
d46c5b12 KH |
4842 | } |
4843 | } | |
df7492f9 KH |
4844 | else |
4845 | { | |
4846 | ASSURE_DESTINATION (charbuf_end - charbuf); | |
4847 | while (charbuf < charbuf_end && dst < dst_end) | |
4848 | *dst++ = *charbuf++; | |
4849 | produced_chars = dst - (coding->destination + coding->dst_bytes); | |
8f924df7 | 4850 | } |
4ed46869 | 4851 | } |
065e3595 | 4852 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4853 | coding->produced_char += produced_chars; |
4854 | coding->produced = dst - coding->destination; | |
4855 | return 0; | |
4ed46869 KH |
4856 | } |
4857 | ||
ff0dacd7 KH |
4858 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". |
4859 | Check if a text is encoded in a charset-based coding system. If it | |
4860 | is, return 1, else return 0. */ | |
4861 | ||
0a28aafb | 4862 | static int |
ff0dacd7 | 4863 | detect_coding_charset (coding, detect_info) |
df7492f9 | 4864 | struct coding_system *coding; |
ff0dacd7 | 4865 | struct coding_detection_info *detect_info; |
1397dc18 | 4866 | { |
065e3595 | 4867 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 4868 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
4869 | int multibytep = coding->src_multibyte; |
4870 | int consumed_chars = 0; | |
4871 | Lisp_Object attrs, valids; | |
584948ac | 4872 | int found = 0; |
716b3fa0 | 4873 | int head_ascii = coding->head_ascii; |
1397dc18 | 4874 | |
ff0dacd7 KH |
4875 | detect_info->checked |= CATEGORY_MASK_CHARSET; |
4876 | ||
df7492f9 KH |
4877 | coding = &coding_categories[coding_category_charset]; |
4878 | attrs = CODING_ID_ATTRS (coding->id); | |
4879 | valids = AREF (attrs, coding_attr_charset_valids); | |
4880 | ||
4881 | if (! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
716b3fa0 | 4882 | src += head_ascii; |
1397dc18 | 4883 | |
b73bfc1c | 4884 | while (1) |
1397dc18 | 4885 | { |
df7492f9 | 4886 | int c; |
716b3fa0 KH |
4887 | Lisp_Object val; |
4888 | struct charset *charset; | |
4889 | int dim, idx; | |
1397dc18 | 4890 | |
065e3595 | 4891 | src_base = src; |
df7492f9 | 4892 | ONE_MORE_BYTE (c); |
065e3595 KH |
4893 | if (c < 0) |
4894 | continue; | |
716b3fa0 KH |
4895 | val = AREF (valids, c); |
4896 | if (NILP (val)) | |
df7492f9 | 4897 | break; |
584948ac | 4898 | if (c >= 0x80) |
ff0dacd7 | 4899 | found = CATEGORY_MASK_CHARSET; |
716b3fa0 KH |
4900 | if (INTEGERP (val)) |
4901 | { | |
4902 | charset = CHARSET_FROM_ID (XFASTINT (val)); | |
4903 | dim = CHARSET_DIMENSION (charset); | |
4904 | for (idx = 1; idx < dim; idx++) | |
4905 | { | |
4906 | if (src == src_end) | |
4907 | goto too_short; | |
4908 | ONE_MORE_BYTE (c); | |
4909 | if (c < charset->code_space[(dim - 1 - idx) * 2] | |
4910 | || c > charset->code_space[(dim - 1 - idx) * 2 + 1]) | |
4911 | break; | |
4912 | } | |
4913 | if (idx < dim) | |
4914 | break; | |
4915 | } | |
4916 | else | |
4917 | { | |
4918 | idx = 1; | |
4919 | for (; CONSP (val); val = XCDR (val)) | |
4920 | { | |
4921 | charset = CHARSET_FROM_ID (XFASTINT (XCAR (val))); | |
4922 | dim = CHARSET_DIMENSION (charset); | |
4923 | while (idx < dim) | |
4924 | { | |
4925 | if (src == src_end) | |
4926 | goto too_short; | |
4927 | ONE_MORE_BYTE (c); | |
4928 | if (c < charset->code_space[(dim - 1 - idx) * 4] | |
4929 | || c > charset->code_space[(dim - 1 - idx) * 4 + 1]) | |
4930 | break; | |
4931 | idx++; | |
4932 | } | |
4933 | if (idx == dim) | |
4934 | { | |
4935 | val = Qnil; | |
4936 | break; | |
4937 | } | |
4938 | } | |
4939 | if (CONSP (val)) | |
4940 | break; | |
4941 | } | |
df7492f9 | 4942 | } |
716b3fa0 | 4943 | too_short: |
ff0dacd7 | 4944 | detect_info->rejected |= CATEGORY_MASK_CHARSET; |
df7492f9 | 4945 | return 0; |
4ed46869 | 4946 | |
df7492f9 | 4947 | no_more_source: |
ff0dacd7 KH |
4948 | detect_info->found |= found; |
4949 | return 1; | |
df7492f9 | 4950 | } |
b73bfc1c | 4951 | |
b73bfc1c | 4952 | static void |
df7492f9 | 4953 | decode_coding_charset (coding) |
4ed46869 | 4954 | struct coding_system *coding; |
4ed46869 | 4955 | { |
8f924df7 KH |
4956 | const unsigned char *src = coding->source + coding->consumed; |
4957 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
4958 | const unsigned char *src_base; | |
69a80ea3 KH |
4959 | int *charbuf = coding->charbuf + coding->charbuf_used; |
4960 | int *charbuf_end | |
4961 | = coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH; | |
df7492f9 KH |
4962 | int consumed_chars = 0, consumed_chars_base; |
4963 | int multibytep = coding->src_multibyte; | |
24a73b0a | 4964 | Lisp_Object attrs, charset_list, valids; |
ff0dacd7 KH |
4965 | int char_offset = coding->produced_char; |
4966 | int last_offset = char_offset; | |
4967 | int last_id = charset_ascii; | |
119852e7 KH |
4968 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
4969 | int byte_after_cr = -1; | |
df7492f9 | 4970 | |
24a73b0a | 4971 | CODING_GET_INFO (coding, attrs, charset_list); |
4eb6d3f1 | 4972 | valids = AREF (attrs, coding_attr_charset_valids); |
b73bfc1c | 4973 | |
df7492f9 | 4974 | while (1) |
4ed46869 | 4975 | { |
4eb6d3f1 | 4976 | int c; |
24a73b0a KH |
4977 | Lisp_Object val; |
4978 | struct charset *charset; | |
4979 | int dim; | |
4980 | int len = 1; | |
4981 | unsigned code; | |
df7492f9 KH |
4982 | |
4983 | src_base = src; | |
4984 | consumed_chars_base = consumed_chars; | |
b73bfc1c | 4985 | |
df7492f9 KH |
4986 | if (charbuf >= charbuf_end) |
4987 | break; | |
4988 | ||
119852e7 KH |
4989 | if (byte_after_cr >= 0) |
4990 | { | |
4991 | c = byte_after_cr; | |
4992 | byte_after_cr = -1; | |
4993 | } | |
4994 | else | |
4995 | { | |
4996 | ONE_MORE_BYTE (c); | |
4997 | if (eol_crlf && c == '\r') | |
4998 | ONE_MORE_BYTE (byte_after_cr); | |
4999 | } | |
065e3595 KH |
5000 | if (c < 0) |
5001 | goto invalid_code; | |
24a73b0a KH |
5002 | code = c; |
5003 | ||
5004 | val = AREF (valids, c); | |
5005 | if (NILP (val)) | |
5006 | goto invalid_code; | |
5007 | if (INTEGERP (val)) | |
d46c5b12 | 5008 | { |
24a73b0a KH |
5009 | charset = CHARSET_FROM_ID (XFASTINT (val)); |
5010 | dim = CHARSET_DIMENSION (charset); | |
5011 | while (len < dim) | |
b73bfc1c | 5012 | { |
24a73b0a KH |
5013 | ONE_MORE_BYTE (c); |
5014 | code = (code << 8) | c; | |
5015 | len++; | |
b73bfc1c | 5016 | } |
24a73b0a KH |
5017 | CODING_DECODE_CHAR (coding, src, src_base, src_end, |
5018 | charset, code, c); | |
d46c5b12 | 5019 | } |
df7492f9 | 5020 | else |
d46c5b12 | 5021 | { |
24a73b0a KH |
5022 | /* VAL is a list of charset IDs. It is assured that the |
5023 | list is sorted by charset dimensions (smaller one | |
5024 | comes first). */ | |
5025 | while (CONSP (val)) | |
4eb6d3f1 | 5026 | { |
24a73b0a | 5027 | charset = CHARSET_FROM_ID (XFASTINT (XCAR (val))); |
c7c66a95 | 5028 | dim = CHARSET_DIMENSION (charset); |
f9d71dcd | 5029 | while (len < dim) |
4eb6d3f1 | 5030 | { |
acb2a965 KH |
5031 | ONE_MORE_BYTE (c); |
5032 | code = (code << 8) | c; | |
f9d71dcd | 5033 | len++; |
4eb6d3f1 | 5034 | } |
24a73b0a KH |
5035 | CODING_DECODE_CHAR (coding, src, src_base, |
5036 | src_end, charset, code, c); | |
5037 | if (c >= 0) | |
5038 | break; | |
5039 | val = XCDR (val); | |
ff0dacd7 | 5040 | } |
d46c5b12 | 5041 | } |
24a73b0a KH |
5042 | if (c < 0) |
5043 | goto invalid_code; | |
5044 | if (charset->id != charset_ascii | |
5045 | && last_id != charset->id) | |
5046 | { | |
5047 | if (last_id != charset_ascii) | |
69a80ea3 | 5048 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
24a73b0a KH |
5049 | last_id = charset->id; |
5050 | last_offset = char_offset; | |
5051 | } | |
5052 | ||
df7492f9 | 5053 | *charbuf++ = c; |
ff0dacd7 | 5054 | char_offset++; |
df7492f9 KH |
5055 | continue; |
5056 | ||
5057 | invalid_code: | |
5058 | src = src_base; | |
5059 | consumed_chars = consumed_chars_base; | |
5060 | ONE_MORE_BYTE (c); | |
065e3595 | 5061 | *charbuf++ = c < 0 ? -c : ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 5062 | char_offset++; |
df7492f9 | 5063 | coding->errors++; |
4ed46869 KH |
5064 | } |
5065 | ||
df7492f9 | 5066 | no_more_source: |
ff0dacd7 | 5067 | if (last_id != charset_ascii) |
69a80ea3 | 5068 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
5069 | coding->consumed_char += consumed_chars_base; |
5070 | coding->consumed = src_base - coding->source; | |
5071 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
5072 | } |
5073 | ||
df7492f9 KH |
5074 | static int |
5075 | encode_coding_charset (coding) | |
4ed46869 | 5076 | struct coding_system *coding; |
4ed46869 | 5077 | { |
df7492f9 KH |
5078 | int multibytep = coding->dst_multibyte; |
5079 | int *charbuf = coding->charbuf; | |
5080 | int *charbuf_end = charbuf + coding->charbuf_used; | |
5081 | unsigned char *dst = coding->destination + coding->produced; | |
5082 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
5083 | int safe_room = MAX_MULTIBYTE_LENGTH; | |
5084 | int produced_chars = 0; | |
24a73b0a | 5085 | Lisp_Object attrs, charset_list; |
df7492f9 | 5086 | int ascii_compatible; |
b73bfc1c | 5087 | int c; |
b73bfc1c | 5088 | |
24a73b0a | 5089 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 | 5090 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); |
fb88bf2d | 5091 | |
df7492f9 | 5092 | while (charbuf < charbuf_end) |
4ed46869 | 5093 | { |
4eb6d3f1 | 5094 | struct charset *charset; |
df7492f9 | 5095 | unsigned code; |
8f924df7 | 5096 | |
df7492f9 KH |
5097 | ASSURE_DESTINATION (safe_room); |
5098 | c = *charbuf++; | |
5099 | if (ascii_compatible && ASCII_CHAR_P (c)) | |
5100 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d | 5101 | else if (CHAR_BYTE8_P (c)) |
4ed46869 | 5102 | { |
16eafb5d KH |
5103 | c = CHAR_TO_BYTE8 (c); |
5104 | EMIT_ONE_BYTE (c); | |
d46c5b12 | 5105 | } |
d46c5b12 | 5106 | else |
b73bfc1c | 5107 | { |
4eb6d3f1 KH |
5108 | charset = char_charset (c, charset_list, &code); |
5109 | if (charset) | |
5110 | { | |
5111 | if (CHARSET_DIMENSION (charset) == 1) | |
5112 | EMIT_ONE_BYTE (code); | |
5113 | else if (CHARSET_DIMENSION (charset) == 2) | |
5114 | EMIT_TWO_BYTES (code >> 8, code & 0xFF); | |
5115 | else if (CHARSET_DIMENSION (charset) == 3) | |
5116 | EMIT_THREE_BYTES (code >> 16, (code >> 8) & 0xFF, code & 0xFF); | |
5117 | else | |
5118 | EMIT_FOUR_BYTES (code >> 24, (code >> 16) & 0xFF, | |
5119 | (code >> 8) & 0xFF, code & 0xFF); | |
5120 | } | |
5121 | else | |
41cbe562 KH |
5122 | { |
5123 | if (coding->mode & CODING_MODE_SAFE_ENCODING) | |
5124 | c = CODING_INHIBIT_CHARACTER_SUBSTITUTION; | |
5125 | else | |
5126 | c = coding->default_char; | |
5127 | EMIT_ONE_BYTE (c); | |
5128 | } | |
4ed46869 | 5129 | } |
4ed46869 KH |
5130 | } |
5131 | ||
065e3595 | 5132 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
5133 | coding->produced_char += produced_chars; |
5134 | coding->produced = dst - coding->destination; | |
5135 | return 0; | |
4ed46869 KH |
5136 | } |
5137 | ||
5138 | \f | |
1397dc18 | 5139 | /*** 7. C library functions ***/ |
4ed46869 | 5140 | |
df7492f9 KH |
5141 | /* Setup coding context CODING from information about CODING_SYSTEM. |
5142 | If CODING_SYSTEM is nil, `no-conversion' is assumed. If | |
5143 | CODING_SYSTEM is invalid, signal an error. */ | |
4ed46869 | 5144 | |
ec6d2bb8 | 5145 | void |
e0e989f6 KH |
5146 | setup_coding_system (coding_system, coding) |
5147 | Lisp_Object coding_system; | |
4ed46869 KH |
5148 | struct coding_system *coding; |
5149 | { | |
df7492f9 KH |
5150 | Lisp_Object attrs; |
5151 | Lisp_Object eol_type; | |
5152 | Lisp_Object coding_type; | |
4608c386 | 5153 | Lisp_Object val; |
4ed46869 | 5154 | |
df7492f9 | 5155 | if (NILP (coding_system)) |
ae6f73fa | 5156 | coding_system = Qundecided; |
c07c8e12 | 5157 | |
df7492f9 | 5158 | CHECK_CODING_SYSTEM_GET_ID (coding_system, coding->id); |
1f5dbf34 | 5159 | |
df7492f9 KH |
5160 | attrs = CODING_ID_ATTRS (coding->id); |
5161 | eol_type = CODING_ID_EOL_TYPE (coding->id); | |
1f5dbf34 | 5162 | |
df7492f9 KH |
5163 | coding->mode = 0; |
5164 | coding->head_ascii = -1; | |
4a015c45 KH |
5165 | if (VECTORP (eol_type)) |
5166 | coding->common_flags = (CODING_REQUIRE_DECODING_MASK | |
5167 | | CODING_REQUIRE_DETECTION_MASK); | |
5168 | else if (! EQ (eol_type, Qunix)) | |
5169 | coding->common_flags = (CODING_REQUIRE_DECODING_MASK | |
5170 | | CODING_REQUIRE_ENCODING_MASK); | |
5171 | else | |
5172 | coding->common_flags = 0; | |
5e5c78be KH |
5173 | if (! NILP (CODING_ATTR_POST_READ (attrs))) |
5174 | coding->common_flags |= CODING_REQUIRE_DECODING_MASK; | |
5175 | if (! NILP (CODING_ATTR_PRE_WRITE (attrs))) | |
5176 | coding->common_flags |= CODING_REQUIRE_ENCODING_MASK; | |
8f924df7 KH |
5177 | if (! NILP (CODING_ATTR_FOR_UNIBYTE (attrs))) |
5178 | coding->common_flags |= CODING_FOR_UNIBYTE_MASK; | |
1f5dbf34 | 5179 | |
df7492f9 | 5180 | val = CODING_ATTR_SAFE_CHARSETS (attrs); |
8f924df7 KH |
5181 | coding->max_charset_id = SCHARS (val) - 1; |
5182 | coding->safe_charsets = (char *) SDATA (val); | |
df7492f9 | 5183 | coding->default_char = XINT (CODING_ATTR_DEFAULT_CHAR (attrs)); |
4608c386 | 5184 | |
df7492f9 KH |
5185 | coding_type = CODING_ATTR_TYPE (attrs); |
5186 | if (EQ (coding_type, Qundecided)) | |
d46c5b12 | 5187 | { |
df7492f9 KH |
5188 | coding->detector = NULL; |
5189 | coding->decoder = decode_coding_raw_text; | |
5190 | coding->encoder = encode_coding_raw_text; | |
5191 | coding->common_flags |= CODING_REQUIRE_DETECTION_MASK; | |
d46c5b12 | 5192 | } |
df7492f9 | 5193 | else if (EQ (coding_type, Qiso_2022)) |
d46c5b12 | 5194 | { |
df7492f9 KH |
5195 | int i; |
5196 | int flags = XINT (AREF (attrs, coding_attr_iso_flags)); | |
5197 | ||
5198 | /* Invoke graphic register 0 to plane 0. */ | |
5199 | CODING_ISO_INVOCATION (coding, 0) = 0; | |
5200 | /* Invoke graphic register 1 to plane 1 if we can use 8-bit. */ | |
5201 | CODING_ISO_INVOCATION (coding, 1) | |
5202 | = (flags & CODING_ISO_FLAG_SEVEN_BITS ? -1 : 1); | |
5203 | /* Setup the initial status of designation. */ | |
5204 | for (i = 0; i < 4; i++) | |
5205 | CODING_ISO_DESIGNATION (coding, i) = CODING_ISO_INITIAL (coding, i); | |
5206 | /* Not single shifting initially. */ | |
5207 | CODING_ISO_SINGLE_SHIFTING (coding) = 0; | |
5208 | /* Beginning of buffer should also be regarded as bol. */ | |
5209 | CODING_ISO_BOL (coding) = 1; | |
5210 | coding->detector = detect_coding_iso_2022; | |
5211 | coding->decoder = decode_coding_iso_2022; | |
5212 | coding->encoder = encode_coding_iso_2022; | |
5213 | if (flags & CODING_ISO_FLAG_SAFE) | |
5214 | coding->mode |= CODING_MODE_SAFE_ENCODING; | |
d46c5b12 | 5215 | coding->common_flags |
df7492f9 KH |
5216 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK |
5217 | | CODING_REQUIRE_FLUSHING_MASK); | |
5218 | if (flags & CODING_ISO_FLAG_COMPOSITION) | |
5219 | coding->common_flags |= CODING_ANNOTATE_COMPOSITION_MASK; | |
ff0dacd7 KH |
5220 | if (flags & CODING_ISO_FLAG_DESIGNATION) |
5221 | coding->common_flags |= CODING_ANNOTATE_CHARSET_MASK; | |
df7492f9 KH |
5222 | if (flags & CODING_ISO_FLAG_FULL_SUPPORT) |
5223 | { | |
5224 | setup_iso_safe_charsets (attrs); | |
5225 | val = CODING_ATTR_SAFE_CHARSETS (attrs); | |
8f924df7 KH |
5226 | coding->max_charset_id = SCHARS (val) - 1; |
5227 | coding->safe_charsets = (char *) SDATA (val); | |
df7492f9 KH |
5228 | } |
5229 | CODING_ISO_FLAGS (coding) = flags; | |
d46c5b12 | 5230 | } |
df7492f9 | 5231 | else if (EQ (coding_type, Qcharset)) |
d46c5b12 | 5232 | { |
df7492f9 KH |
5233 | coding->detector = detect_coding_charset; |
5234 | coding->decoder = decode_coding_charset; | |
5235 | coding->encoder = encode_coding_charset; | |
d46c5b12 | 5236 | coding->common_flags |
df7492f9 | 5237 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
d46c5b12 | 5238 | } |
df7492f9 | 5239 | else if (EQ (coding_type, Qutf_8)) |
d46c5b12 | 5240 | { |
df7492f9 KH |
5241 | coding->detector = detect_coding_utf_8; |
5242 | coding->decoder = decode_coding_utf_8; | |
5243 | coding->encoder = encode_coding_utf_8; | |
5244 | coding->common_flags | |
5245 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); | |
5246 | } | |
5247 | else if (EQ (coding_type, Qutf_16)) | |
5248 | { | |
5249 | val = AREF (attrs, coding_attr_utf_16_bom); | |
5250 | CODING_UTF_16_BOM (coding) = (CONSP (val) ? utf_16_detect_bom | |
5251 | : EQ (val, Qt) ? utf_16_with_bom | |
5252 | : utf_16_without_bom); | |
5253 | val = AREF (attrs, coding_attr_utf_16_endian); | |
b49a1807 | 5254 | CODING_UTF_16_ENDIAN (coding) = (EQ (val, Qbig) ? utf_16_big_endian |
df7492f9 | 5255 | : utf_16_little_endian); |
e19c3639 | 5256 | CODING_UTF_16_SURROGATE (coding) = 0; |
df7492f9 KH |
5257 | coding->detector = detect_coding_utf_16; |
5258 | coding->decoder = decode_coding_utf_16; | |
5259 | coding->encoder = encode_coding_utf_16; | |
5260 | coding->common_flags | |
5261 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); | |
b49a1807 KH |
5262 | if (CODING_UTF_16_BOM (coding) == utf_16_detect_bom) |
5263 | coding->common_flags |= CODING_REQUIRE_DETECTION_MASK; | |
d46c5b12 | 5264 | } |
df7492f9 | 5265 | else if (EQ (coding_type, Qccl)) |
4ed46869 | 5266 | { |
df7492f9 KH |
5267 | coding->detector = detect_coding_ccl; |
5268 | coding->decoder = decode_coding_ccl; | |
5269 | coding->encoder = encode_coding_ccl; | |
c952af22 | 5270 | coding->common_flags |
df7492f9 KH |
5271 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK |
5272 | | CODING_REQUIRE_FLUSHING_MASK); | |
5273 | } | |
5274 | else if (EQ (coding_type, Qemacs_mule)) | |
5275 | { | |
5276 | coding->detector = detect_coding_emacs_mule; | |
5277 | coding->decoder = decode_coding_emacs_mule; | |
5278 | coding->encoder = encode_coding_emacs_mule; | |
c952af22 | 5279 | coding->common_flags |
df7492f9 KH |
5280 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
5281 | if (! NILP (AREF (attrs, coding_attr_emacs_mule_full)) | |
5282 | && ! EQ (CODING_ATTR_CHARSET_LIST (attrs), Vemacs_mule_charset_list)) | |
5283 | { | |
5284 | Lisp_Object tail, safe_charsets; | |
5285 | int max_charset_id = 0; | |
5286 | ||
5287 | for (tail = Vemacs_mule_charset_list; CONSP (tail); | |
5288 | tail = XCDR (tail)) | |
5289 | if (max_charset_id < XFASTINT (XCAR (tail))) | |
5290 | max_charset_id = XFASTINT (XCAR (tail)); | |
5291 | safe_charsets = Fmake_string (make_number (max_charset_id + 1), | |
5292 | make_number (255)); | |
5293 | for (tail = Vemacs_mule_charset_list; CONSP (tail); | |
5294 | tail = XCDR (tail)) | |
8f924df7 | 5295 | SSET (safe_charsets, XFASTINT (XCAR (tail)), 0); |
df7492f9 | 5296 | coding->max_charset_id = max_charset_id; |
8f924df7 | 5297 | coding->safe_charsets = (char *) SDATA (safe_charsets); |
df7492f9 KH |
5298 | } |
5299 | } | |
5300 | else if (EQ (coding_type, Qshift_jis)) | |
5301 | { | |
5302 | coding->detector = detect_coding_sjis; | |
5303 | coding->decoder = decode_coding_sjis; | |
5304 | coding->encoder = encode_coding_sjis; | |
c952af22 | 5305 | coding->common_flags |
df7492f9 KH |
5306 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
5307 | } | |
5308 | else if (EQ (coding_type, Qbig5)) | |
5309 | { | |
5310 | coding->detector = detect_coding_big5; | |
5311 | coding->decoder = decode_coding_big5; | |
5312 | coding->encoder = encode_coding_big5; | |
c952af22 | 5313 | coding->common_flags |
df7492f9 KH |
5314 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
5315 | } | |
5316 | else /* EQ (coding_type, Qraw_text) */ | |
ec6d2bb8 | 5317 | { |
df7492f9 KH |
5318 | coding->detector = NULL; |
5319 | coding->decoder = decode_coding_raw_text; | |
5320 | coding->encoder = encode_coding_raw_text; | |
ea29edf2 KH |
5321 | if (! EQ (eol_type, Qunix)) |
5322 | { | |
5323 | coding->common_flags |= CODING_REQUIRE_DECODING_MASK; | |
5324 | if (! VECTORP (eol_type)) | |
5325 | coding->common_flags |= CODING_REQUIRE_ENCODING_MASK; | |
5326 | } | |
5327 | ||
4ed46869 | 5328 | } |
4ed46869 | 5329 | |
df7492f9 | 5330 | return; |
4ed46869 KH |
5331 | } |
5332 | ||
0ff61e78 KH |
5333 | /* Return a list of charsets supported by CODING. */ |
5334 | ||
5335 | Lisp_Object | |
5336 | coding_charset_list (coding) | |
5337 | struct coding_system *coding; | |
5338 | { | |
35befdaa | 5339 | Lisp_Object attrs, charset_list; |
0ff61e78 KH |
5340 | |
5341 | CODING_GET_INFO (coding, attrs, charset_list); | |
5342 | if (EQ (CODING_ATTR_TYPE (attrs), Qiso_2022)) | |
5343 | { | |
5344 | int flags = XINT (AREF (attrs, coding_attr_iso_flags)); | |
5345 | ||
5346 | if (flags & CODING_ISO_FLAG_FULL_SUPPORT) | |
5347 | charset_list = Viso_2022_charset_list; | |
5348 | } | |
5349 | else if (EQ (CODING_ATTR_TYPE (attrs), Qemacs_mule)) | |
5350 | { | |
5351 | charset_list = Vemacs_mule_charset_list; | |
5352 | } | |
5353 | return charset_list; | |
5354 | } | |
5355 | ||
5356 | ||
df7492f9 KH |
5357 | /* Return raw-text or one of its subsidiaries that has the same |
5358 | eol_type as CODING-SYSTEM. */ | |
ec6d2bb8 | 5359 | |
df7492f9 KH |
5360 | Lisp_Object |
5361 | raw_text_coding_system (coding_system) | |
5362 | Lisp_Object coding_system; | |
ec6d2bb8 | 5363 | { |
0be8721c | 5364 | Lisp_Object spec, attrs; |
df7492f9 | 5365 | Lisp_Object eol_type, raw_text_eol_type; |
ec6d2bb8 | 5366 | |
d3e4cb56 KH |
5367 | if (NILP (coding_system)) |
5368 | return Qraw_text; | |
df7492f9 KH |
5369 | spec = CODING_SYSTEM_SPEC (coding_system); |
5370 | attrs = AREF (spec, 0); | |
ec6d2bb8 | 5371 | |
df7492f9 KH |
5372 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) |
5373 | return coding_system; | |
ec6d2bb8 | 5374 | |
df7492f9 KH |
5375 | eol_type = AREF (spec, 2); |
5376 | if (VECTORP (eol_type)) | |
5377 | return Qraw_text; | |
5378 | spec = CODING_SYSTEM_SPEC (Qraw_text); | |
5379 | raw_text_eol_type = AREF (spec, 2); | |
5380 | return (EQ (eol_type, Qunix) ? AREF (raw_text_eol_type, 0) | |
5381 | : EQ (eol_type, Qdos) ? AREF (raw_text_eol_type, 1) | |
5382 | : AREF (raw_text_eol_type, 2)); | |
ec6d2bb8 KH |
5383 | } |
5384 | ||
54f78171 | 5385 | |
df7492f9 KH |
5386 | /* If CODING_SYSTEM doesn't specify end-of-line format but PARENT |
5387 | does, return one of the subsidiary that has the same eol-spec as | |
fcbcfb64 KH |
5388 | PARENT. Otherwise, return CODING_SYSTEM. If PARENT is nil, |
5389 | inherit end-of-line format from the system's setting | |
5390 | (system_eol_type). */ | |
df7492f9 KH |
5391 | |
5392 | Lisp_Object | |
5393 | coding_inherit_eol_type (coding_system, parent) | |
b74e4686 | 5394 | Lisp_Object coding_system, parent; |
54f78171 | 5395 | { |
3e139625 | 5396 | Lisp_Object spec, eol_type; |
54f78171 | 5397 | |
d3e4cb56 KH |
5398 | if (NILP (coding_system)) |
5399 | coding_system = Qraw_text; | |
df7492f9 | 5400 | spec = CODING_SYSTEM_SPEC (coding_system); |
df7492f9 | 5401 | eol_type = AREF (spec, 2); |
fcbcfb64 | 5402 | if (VECTORP (eol_type)) |
df7492f9 | 5403 | { |
df7492f9 KH |
5404 | Lisp_Object parent_eol_type; |
5405 | ||
fcbcfb64 KH |
5406 | if (! NILP (parent)) |
5407 | { | |
5408 | Lisp_Object parent_spec; | |
5409 | ||
4a015c45 | 5410 | parent_spec = CODING_SYSTEM_SPEC (parent); |
fcbcfb64 KH |
5411 | parent_eol_type = AREF (parent_spec, 2); |
5412 | } | |
5413 | else | |
5414 | parent_eol_type = system_eol_type; | |
df7492f9 KH |
5415 | if (EQ (parent_eol_type, Qunix)) |
5416 | coding_system = AREF (eol_type, 0); | |
5417 | else if (EQ (parent_eol_type, Qdos)) | |
5418 | coding_system = AREF (eol_type, 1); | |
5419 | else if (EQ (parent_eol_type, Qmac)) | |
5420 | coding_system = AREF (eol_type, 2); | |
54f78171 | 5421 | } |
df7492f9 | 5422 | return coding_system; |
54f78171 KH |
5423 | } |
5424 | ||
4ed46869 KH |
5425 | /* Emacs has a mechanism to automatically detect a coding system if it |
5426 | is one of Emacs' internal format, ISO2022, SJIS, and BIG5. But, | |
5427 | it's impossible to distinguish some coding systems accurately | |
5428 | because they use the same range of codes. So, at first, coding | |
5429 | systems are categorized into 7, those are: | |
5430 | ||
0ef69138 | 5431 | o coding-category-emacs-mule |
4ed46869 KH |
5432 | |
5433 | The category for a coding system which has the same code range | |
5434 | as Emacs' internal format. Assigned the coding-system (Lisp | |
0ef69138 | 5435 | symbol) `emacs-mule' by default. |
4ed46869 KH |
5436 | |
5437 | o coding-category-sjis | |
5438 | ||
5439 | The category for a coding system which has the same code range | |
5440 | as SJIS. Assigned the coding-system (Lisp | |
7717c392 | 5441 | symbol) `japanese-shift-jis' by default. |
4ed46869 KH |
5442 | |
5443 | o coding-category-iso-7 | |
5444 | ||
5445 | The category for a coding system which has the same code range | |
7717c392 | 5446 | as ISO2022 of 7-bit environment. This doesn't use any locking |
d46c5b12 KH |
5447 | shift and single shift functions. This can encode/decode all |
5448 | charsets. Assigned the coding-system (Lisp symbol) | |
5449 | `iso-2022-7bit' by default. | |
5450 | ||
5451 | o coding-category-iso-7-tight | |
5452 | ||
5453 | Same as coding-category-iso-7 except that this can | |
5454 | encode/decode only the specified charsets. | |
4ed46869 KH |
5455 | |
5456 | o coding-category-iso-8-1 | |
5457 | ||
5458 | The category for a coding system which has the same code range | |
5459 | as ISO2022 of 8-bit environment and graphic plane 1 used only | |
7717c392 KH |
5460 | for DIMENSION1 charset. This doesn't use any locking shift |
5461 | and single shift functions. Assigned the coding-system (Lisp | |
5462 | symbol) `iso-latin-1' by default. | |
4ed46869 KH |
5463 | |
5464 | o coding-category-iso-8-2 | |
5465 | ||
5466 | The category for a coding system which has the same code range | |
5467 | as ISO2022 of 8-bit environment and graphic plane 1 used only | |
7717c392 KH |
5468 | for DIMENSION2 charset. This doesn't use any locking shift |
5469 | and single shift functions. Assigned the coding-system (Lisp | |
5470 | symbol) `japanese-iso-8bit' by default. | |
4ed46869 | 5471 | |
7717c392 | 5472 | o coding-category-iso-7-else |
4ed46869 KH |
5473 | |
5474 | The category for a coding system which has the same code range | |
df7492f9 | 5475 | as ISO2022 of 7-bit environemnt but uses locking shift or |
7717c392 KH |
5476 | single shift functions. Assigned the coding-system (Lisp |
5477 | symbol) `iso-2022-7bit-lock' by default. | |
5478 | ||
5479 | o coding-category-iso-8-else | |
5480 | ||
5481 | The category for a coding system which has the same code range | |
df7492f9 | 5482 | as ISO2022 of 8-bit environemnt but uses locking shift or |
7717c392 KH |
5483 | single shift functions. Assigned the coding-system (Lisp |
5484 | symbol) `iso-2022-8bit-ss2' by default. | |
4ed46869 KH |
5485 | |
5486 | o coding-category-big5 | |
5487 | ||
5488 | The category for a coding system which has the same code range | |
5489 | as BIG5. Assigned the coding-system (Lisp symbol) | |
e0e989f6 | 5490 | `cn-big5' by default. |
4ed46869 | 5491 | |
fa42c37f KH |
5492 | o coding-category-utf-8 |
5493 | ||
5494 | The category for a coding system which has the same code range | |
6e76ae91 | 5495 | as UTF-8 (cf. RFC3629). Assigned the coding-system (Lisp |
fa42c37f KH |
5496 | symbol) `utf-8' by default. |
5497 | ||
5498 | o coding-category-utf-16-be | |
5499 | ||
5500 | The category for a coding system in which a text has an | |
5501 | Unicode signature (cf. Unicode Standard) in the order of BIG | |
5502 | endian at the head. Assigned the coding-system (Lisp symbol) | |
5503 | `utf-16-be' by default. | |
5504 | ||
5505 | o coding-category-utf-16-le | |
5506 | ||
5507 | The category for a coding system in which a text has an | |
5508 | Unicode signature (cf. Unicode Standard) in the order of | |
5509 | LITTLE endian at the head. Assigned the coding-system (Lisp | |
5510 | symbol) `utf-16-le' by default. | |
5511 | ||
1397dc18 KH |
5512 | o coding-category-ccl |
5513 | ||
5514 | The category for a coding system of which encoder/decoder is | |
5515 | written in CCL programs. The default value is nil, i.e., no | |
5516 | coding system is assigned. | |
5517 | ||
4ed46869 KH |
5518 | o coding-category-binary |
5519 | ||
5520 | The category for a coding system not categorized in any of the | |
5521 | above. Assigned the coding-system (Lisp symbol) | |
e0e989f6 | 5522 | `no-conversion' by default. |
4ed46869 KH |
5523 | |
5524 | Each of them is a Lisp symbol and the value is an actual | |
df7492f9 | 5525 | `coding-system's (this is also a Lisp symbol) assigned by a user. |
4ed46869 KH |
5526 | What Emacs does actually is to detect a category of coding system. |
5527 | Then, it uses a `coding-system' assigned to it. If Emacs can't | |
df7492f9 | 5528 | decide only one possible category, it selects a category of the |
4ed46869 KH |
5529 | highest priority. Priorities of categories are also specified by a |
5530 | user in a Lisp variable `coding-category-list'. | |
5531 | ||
5532 | */ | |
5533 | ||
df7492f9 KH |
5534 | #define EOL_SEEN_NONE 0 |
5535 | #define EOL_SEEN_LF 1 | |
5536 | #define EOL_SEEN_CR 2 | |
5537 | #define EOL_SEEN_CRLF 4 | |
66cfb530 | 5538 | |
ff0dacd7 KH |
5539 | /* Detect how end-of-line of a text of length SRC_BYTES pointed by |
5540 | SOURCE is encoded. If CATEGORY is one of | |
5541 | coding_category_utf_16_XXXX, assume that CR and LF are encoded by | |
5542 | two-byte, else they are encoded by one-byte. | |
5543 | ||
5544 | Return one of EOL_SEEN_XXX. */ | |
4ed46869 | 5545 | |
bc4bc72a | 5546 | #define MAX_EOL_CHECK_COUNT 3 |
d46c5b12 KH |
5547 | |
5548 | static int | |
89528eb3 | 5549 | detect_eol (source, src_bytes, category) |
f6cbaf43 | 5550 | const unsigned char *source; |
df7492f9 | 5551 | EMACS_INT src_bytes; |
89528eb3 | 5552 | enum coding_category category; |
4ed46869 | 5553 | { |
f6cbaf43 | 5554 | const unsigned char *src = source, *src_end = src + src_bytes; |
4ed46869 | 5555 | unsigned char c; |
df7492f9 KH |
5556 | int total = 0; |
5557 | int eol_seen = EOL_SEEN_NONE; | |
4ed46869 | 5558 | |
89528eb3 | 5559 | if ((1 << category) & CATEGORY_MASK_UTF_16) |
4ed46869 | 5560 | { |
df7492f9 | 5561 | int msb, lsb; |
fa42c37f | 5562 | |
89528eb3 KH |
5563 | msb = category == (coding_category_utf_16_le |
5564 | | coding_category_utf_16_le_nosig); | |
df7492f9 | 5565 | lsb = 1 - msb; |
fa42c37f | 5566 | |
df7492f9 | 5567 | while (src + 1 < src_end) |
fa42c37f | 5568 | { |
df7492f9 KH |
5569 | c = src[lsb]; |
5570 | if (src[msb] == 0 && (c == '\n' || c == '\r')) | |
fa42c37f | 5571 | { |
df7492f9 KH |
5572 | int this_eol; |
5573 | ||
5574 | if (c == '\n') | |
5575 | this_eol = EOL_SEEN_LF; | |
5576 | else if (src + 3 >= src_end | |
5577 | || src[msb + 2] != 0 | |
5578 | || src[lsb + 2] != '\n') | |
5579 | this_eol = EOL_SEEN_CR; | |
fa42c37f | 5580 | else |
8f924df7 | 5581 | this_eol = EOL_SEEN_CRLF; |
df7492f9 KH |
5582 | |
5583 | if (eol_seen == EOL_SEEN_NONE) | |
5584 | /* This is the first end-of-line. */ | |
5585 | eol_seen = this_eol; | |
5586 | else if (eol_seen != this_eol) | |
fa42c37f | 5587 | { |
df7492f9 KH |
5588 | /* The found type is different from what found before. */ |
5589 | eol_seen = EOL_SEEN_LF; | |
5590 | break; | |
fa42c37f | 5591 | } |
df7492f9 KH |
5592 | if (++total == MAX_EOL_CHECK_COUNT) |
5593 | break; | |
fa42c37f | 5594 | } |
df7492f9 | 5595 | src += 2; |
fa42c37f | 5596 | } |
bcf26d6a | 5597 | } |
d46c5b12 | 5598 | else |
c4825358 | 5599 | { |
df7492f9 | 5600 | while (src < src_end) |
27901516 | 5601 | { |
df7492f9 KH |
5602 | c = *src++; |
5603 | if (c == '\n' || c == '\r') | |
5604 | { | |
5605 | int this_eol; | |
d46c5b12 | 5606 | |
df7492f9 KH |
5607 | if (c == '\n') |
5608 | this_eol = EOL_SEEN_LF; | |
5609 | else if (src >= src_end || *src != '\n') | |
5610 | this_eol = EOL_SEEN_CR; | |
5611 | else | |
5612 | this_eol = EOL_SEEN_CRLF, src++; | |
d46c5b12 | 5613 | |
df7492f9 KH |
5614 | if (eol_seen == EOL_SEEN_NONE) |
5615 | /* This is the first end-of-line. */ | |
5616 | eol_seen = this_eol; | |
5617 | else if (eol_seen != this_eol) | |
5618 | { | |
5619 | /* The found type is different from what found before. */ | |
5620 | eol_seen = EOL_SEEN_LF; | |
5621 | break; | |
5622 | } | |
5623 | if (++total == MAX_EOL_CHECK_COUNT) | |
5624 | break; | |
5625 | } | |
5626 | } | |
73be902c | 5627 | } |
df7492f9 | 5628 | return eol_seen; |
73be902c KH |
5629 | } |
5630 | ||
df7492f9 | 5631 | |
24a73b0a | 5632 | static Lisp_Object |
df7492f9 KH |
5633 | adjust_coding_eol_type (coding, eol_seen) |
5634 | struct coding_system *coding; | |
5635 | int eol_seen; | |
73be902c | 5636 | { |
0be8721c | 5637 | Lisp_Object eol_type; |
8f924df7 | 5638 | |
df7492f9 KH |
5639 | eol_type = CODING_ID_EOL_TYPE (coding->id); |
5640 | if (eol_seen & EOL_SEEN_LF) | |
24a73b0a KH |
5641 | { |
5642 | coding->id = CODING_SYSTEM_ID (AREF (eol_type, 0)); | |
5643 | eol_type = Qunix; | |
5644 | } | |
6f197c07 | 5645 | else if (eol_seen & EOL_SEEN_CRLF) |
24a73b0a KH |
5646 | { |
5647 | coding->id = CODING_SYSTEM_ID (AREF (eol_type, 1)); | |
5648 | eol_type = Qdos; | |
5649 | } | |
6f197c07 | 5650 | else if (eol_seen & EOL_SEEN_CR) |
24a73b0a KH |
5651 | { |
5652 | coding->id = CODING_SYSTEM_ID (AREF (eol_type, 2)); | |
5653 | eol_type = Qmac; | |
5654 | } | |
5655 | return eol_type; | |
d46c5b12 | 5656 | } |
4ed46869 | 5657 | |
df7492f9 KH |
5658 | /* Detect how a text specified in CODING is encoded. If a coding |
5659 | system is detected, update fields of CODING by the detected coding | |
5660 | system. */ | |
0a28aafb | 5661 | |
df7492f9 KH |
5662 | void |
5663 | detect_coding (coding) | |
d46c5b12 | 5664 | struct coding_system *coding; |
d46c5b12 | 5665 | { |
8f924df7 | 5666 | const unsigned char *src, *src_end; |
d46c5b12 | 5667 | |
df7492f9 KH |
5668 | coding->consumed = coding->consumed_char = 0; |
5669 | coding->produced = coding->produced_char = 0; | |
5670 | coding_set_source (coding); | |
1c3478b0 | 5671 | |
df7492f9 | 5672 | src_end = coding->source + coding->src_bytes; |
1c3478b0 | 5673 | |
df7492f9 KH |
5674 | /* If we have not yet decided the text encoding type, detect it |
5675 | now. */ | |
5676 | if (EQ (CODING_ATTR_TYPE (CODING_ID_ATTRS (coding->id)), Qundecided)) | |
b73bfc1c | 5677 | { |
df7492f9 | 5678 | int c, i; |
6cb21a4f | 5679 | struct coding_detection_info detect_info; |
df7492f9 | 5680 | |
6cb21a4f | 5681 | detect_info.checked = detect_info.found = detect_info.rejected = 0; |
24a73b0a | 5682 | for (i = 0, src = coding->source; src < src_end; i++, src++) |
d46c5b12 | 5683 | { |
df7492f9 | 5684 | c = *src; |
6cb21a4f | 5685 | if (c & 0x80) |
df7492f9 | 5686 | break; |
6cb21a4f KH |
5687 | if (c < 0x20 |
5688 | && (c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO) | |
5689 | && ! inhibit_iso_escape_detection | |
5690 | && ! detect_info.checked) | |
5691 | { | |
5692 | coding->head_ascii = src - (coding->source + coding->consumed); | |
5693 | if (detect_coding_iso_2022 (coding, &detect_info)) | |
5694 | { | |
5695 | /* We have scanned the whole data. */ | |
5696 | if (! (detect_info.rejected & CATEGORY_MASK_ISO_7_ELSE)) | |
5697 | /* We didn't find an 8-bit code. */ | |
5698 | src = src_end; | |
5699 | break; | |
5700 | } | |
5701 | } | |
d46c5b12 | 5702 | } |
df7492f9 KH |
5703 | coding->head_ascii = src - (coding->source + coding->consumed); |
5704 | ||
3aef54f3 | 5705 | if (coding->head_ascii < coding->src_bytes |
6cb21a4f | 5706 | || detect_info.found) |
d46c5b12 | 5707 | { |
ff0dacd7 KH |
5708 | enum coding_category category; |
5709 | struct coding_system *this; | |
df7492f9 | 5710 | |
6cb21a4f KH |
5711 | if (coding->head_ascii == coding->src_bytes) |
5712 | /* As all bytes are 7-bit, we can ignore non-ISO-2022 codings. */ | |
5713 | for (i = 0; i < coding_category_raw_text; i++) | |
5714 | { | |
5715 | category = coding_priorities[i]; | |
5716 | this = coding_categories + category; | |
5717 | if (detect_info.found & (1 << category)) | |
24a73b0a | 5718 | break; |
6cb21a4f KH |
5719 | } |
5720 | else | |
5721 | for (i = 0; i < coding_category_raw_text; i++) | |
5722 | { | |
5723 | category = coding_priorities[i]; | |
5724 | this = coding_categories + category; | |
5725 | if (this->id < 0) | |
5726 | { | |
5727 | /* No coding system of this category is defined. */ | |
5728 | detect_info.rejected |= (1 << category); | |
5729 | } | |
5730 | else if (category >= coding_category_raw_text) | |
5731 | continue; | |
5732 | else if (detect_info.checked & (1 << category)) | |
5733 | { | |
5734 | if (detect_info.found & (1 << category)) | |
5735 | break; | |
5736 | } | |
5737 | else if ((*(this->detector)) (coding, &detect_info) | |
5738 | && detect_info.found & (1 << category)) | |
5739 | { | |
5740 | if (category == coding_category_utf_16_auto) | |
5741 | { | |
5742 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
5743 | category = coding_category_utf_16_le; | |
5744 | else | |
5745 | category = coding_category_utf_16_be; | |
5746 | } | |
5747 | break; | |
5748 | } | |
5749 | } | |
5750 | ||
ff0dacd7 KH |
5751 | if (i < coding_category_raw_text) |
5752 | setup_coding_system (CODING_ID_NAME (this->id), coding); | |
5753 | else if (detect_info.rejected == CATEGORY_MASK_ANY) | |
df7492f9 | 5754 | setup_coding_system (Qraw_text, coding); |
ff0dacd7 | 5755 | else if (detect_info.rejected) |
df7492f9 | 5756 | for (i = 0; i < coding_category_raw_text; i++) |
ff0dacd7 KH |
5757 | if (! (detect_info.rejected & (1 << coding_priorities[i]))) |
5758 | { | |
5759 | this = coding_categories + coding_priorities[i]; | |
5760 | setup_coding_system (CODING_ID_NAME (this->id), coding); | |
5761 | break; | |
5762 | } | |
d46c5b12 | 5763 | } |
b73bfc1c | 5764 | } |
24a73b0a KH |
5765 | else if (XINT (CODING_ATTR_CATEGORY (CODING_ID_ATTRS (coding->id))) |
5766 | == coding_category_utf_16_auto) | |
b49a1807 KH |
5767 | { |
5768 | Lisp_Object coding_systems; | |
5769 | struct coding_detection_info detect_info; | |
5770 | ||
5771 | coding_systems | |
5772 | = AREF (CODING_ID_ATTRS (coding->id), coding_attr_utf_16_bom); | |
5773 | detect_info.found = detect_info.rejected = 0; | |
5774 | if (CONSP (coding_systems) | |
24a73b0a | 5775 | && detect_coding_utf_16 (coding, &detect_info)) |
b49a1807 KH |
5776 | { |
5777 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
5778 | setup_coding_system (XCAR (coding_systems), coding); | |
24a73b0a | 5779 | else if (detect_info.found & CATEGORY_MASK_UTF_16_BE) |
b49a1807 KH |
5780 | setup_coding_system (XCDR (coding_systems), coding); |
5781 | } | |
5782 | } | |
4ed46869 | 5783 | } |
4ed46869 | 5784 | |
d46c5b12 | 5785 | |
aaaf0b1e | 5786 | static void |
df7492f9 | 5787 | decode_eol (coding) |
aaaf0b1e | 5788 | struct coding_system *coding; |
aaaf0b1e | 5789 | { |
24a73b0a KH |
5790 | Lisp_Object eol_type; |
5791 | unsigned char *p, *pbeg, *pend; | |
5792 | ||
5793 | eol_type = CODING_ID_EOL_TYPE (coding->id); | |
5794 | if (EQ (eol_type, Qunix)) | |
5795 | return; | |
5796 | ||
5797 | if (NILP (coding->dst_object)) | |
5798 | pbeg = coding->destination; | |
5799 | else | |
5800 | pbeg = BYTE_POS_ADDR (coding->dst_pos_byte); | |
5801 | pend = pbeg + coding->produced; | |
5802 | ||
5803 | if (VECTORP (eol_type)) | |
aaaf0b1e | 5804 | { |
df7492f9 | 5805 | int eol_seen = EOL_SEEN_NONE; |
4ed46869 | 5806 | |
24a73b0a | 5807 | for (p = pbeg; p < pend; p++) |
aaaf0b1e | 5808 | { |
df7492f9 KH |
5809 | if (*p == '\n') |
5810 | eol_seen |= EOL_SEEN_LF; | |
5811 | else if (*p == '\r') | |
aaaf0b1e | 5812 | { |
df7492f9 | 5813 | if (p + 1 < pend && *(p + 1) == '\n') |
aaaf0b1e | 5814 | { |
df7492f9 KH |
5815 | eol_seen |= EOL_SEEN_CRLF; |
5816 | p++; | |
aaaf0b1e | 5817 | } |
aaaf0b1e | 5818 | else |
df7492f9 | 5819 | eol_seen |= EOL_SEEN_CR; |
aaaf0b1e | 5820 | } |
aaaf0b1e | 5821 | } |
24a73b0a KH |
5822 | if (eol_seen != EOL_SEEN_NONE |
5823 | && eol_seen != EOL_SEEN_LF | |
5824 | && eol_seen != EOL_SEEN_CRLF | |
5825 | && eol_seen != EOL_SEEN_CR) | |
5826 | eol_seen = EOL_SEEN_LF; | |
df7492f9 | 5827 | if (eol_seen != EOL_SEEN_NONE) |
24a73b0a | 5828 | eol_type = adjust_coding_eol_type (coding, eol_seen); |
aaaf0b1e | 5829 | } |
d46c5b12 | 5830 | |
24a73b0a | 5831 | if (EQ (eol_type, Qmac)) |
27901516 | 5832 | { |
24a73b0a | 5833 | for (p = pbeg; p < pend; p++) |
df7492f9 KH |
5834 | if (*p == '\r') |
5835 | *p = '\n'; | |
4ed46869 | 5836 | } |
24a73b0a | 5837 | else if (EQ (eol_type, Qdos)) |
df7492f9 | 5838 | { |
24a73b0a | 5839 | int n = 0; |
b73bfc1c | 5840 | |
24a73b0a KH |
5841 | if (NILP (coding->dst_object)) |
5842 | { | |
4347441b KH |
5843 | /* Start deleting '\r' from the tail to minimize the memory |
5844 | movement. */ | |
24a73b0a KH |
5845 | for (p = pend - 2; p >= pbeg; p--) |
5846 | if (*p == '\r') | |
5847 | { | |
5848 | safe_bcopy ((char *) (p + 1), (char *) p, pend-- - p - 1); | |
5849 | n++; | |
5850 | } | |
5851 | } | |
5852 | else | |
5853 | { | |
4347441b KH |
5854 | int pos_byte = coding->dst_pos_byte; |
5855 | int pos = coding->dst_pos; | |
5856 | int pos_end = pos + coding->produced_char - 1; | |
5857 | ||
5858 | while (pos < pos_end) | |
5859 | { | |
5860 | p = BYTE_POS_ADDR (pos_byte); | |
5861 | if (*p == '\r' && p[1] == '\n') | |
5862 | { | |
5863 | del_range_2 (pos, pos_byte, pos + 1, pos_byte + 1, 0); | |
5864 | n++; | |
5865 | pos_end--; | |
5866 | } | |
5867 | pos++; | |
69b8522d KH |
5868 | if (coding->dst_multibyte) |
5869 | pos_byte += BYTES_BY_CHAR_HEAD (*p); | |
5870 | else | |
5871 | pos_byte++; | |
4347441b | 5872 | } |
24a73b0a KH |
5873 | } |
5874 | coding->produced -= n; | |
5875 | coding->produced_char -= n; | |
aaaf0b1e | 5876 | } |
4ed46869 KH |
5877 | } |
5878 | ||
7d64c6ad | 5879 | |
a6f87d34 KH |
5880 | /* Return a translation table (or list of them) from coding system |
5881 | attribute vector ATTRS for encoding (ENCODEP is nonzero) or | |
5882 | decoding (ENCODEP is zero). */ | |
7d64c6ad | 5883 | |
e6a54062 | 5884 | static Lisp_Object |
09ee6fdd KH |
5885 | get_translation_table (attrs, encodep, max_lookup) |
5886 | Lisp_Object attrs; | |
5887 | int encodep, *max_lookup; | |
7d64c6ad KH |
5888 | { |
5889 | Lisp_Object standard, translation_table; | |
09ee6fdd | 5890 | Lisp_Object val; |
7d64c6ad KH |
5891 | |
5892 | if (encodep) | |
5893 | translation_table = CODING_ATTR_ENCODE_TBL (attrs), | |
5894 | standard = Vstandard_translation_table_for_encode; | |
5895 | else | |
5896 | translation_table = CODING_ATTR_DECODE_TBL (attrs), | |
5897 | standard = Vstandard_translation_table_for_decode; | |
7d64c6ad | 5898 | if (NILP (translation_table)) |
09ee6fdd KH |
5899 | translation_table = standard; |
5900 | else | |
a6f87d34 | 5901 | { |
09ee6fdd KH |
5902 | if (SYMBOLP (translation_table)) |
5903 | translation_table = Fget (translation_table, Qtranslation_table); | |
5904 | else if (CONSP (translation_table)) | |
5905 | { | |
5906 | translation_table = Fcopy_sequence (translation_table); | |
5907 | for (val = translation_table; CONSP (val); val = XCDR (val)) | |
5908 | if (SYMBOLP (XCAR (val))) | |
5909 | XSETCAR (val, Fget (XCAR (val), Qtranslation_table)); | |
5910 | } | |
5911 | if (CHAR_TABLE_P (standard)) | |
5912 | { | |
5913 | if (CONSP (translation_table)) | |
5914 | translation_table = nconc2 (translation_table, | |
5915 | Fcons (standard, Qnil)); | |
5916 | else | |
5917 | translation_table = Fcons (translation_table, | |
5918 | Fcons (standard, Qnil)); | |
5919 | } | |
a6f87d34 | 5920 | } |
2170c8f0 KH |
5921 | |
5922 | if (max_lookup) | |
09ee6fdd | 5923 | { |
2170c8f0 KH |
5924 | *max_lookup = 1; |
5925 | if (CHAR_TABLE_P (translation_table) | |
5926 | && CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (translation_table)) > 1) | |
5927 | { | |
5928 | val = XCHAR_TABLE (translation_table)->extras[1]; | |
5929 | if (NATNUMP (val) && *max_lookup < XFASTINT (val)) | |
5930 | *max_lookup = XFASTINT (val); | |
5931 | } | |
5932 | else if (CONSP (translation_table)) | |
5933 | { | |
5934 | Lisp_Object tail, val; | |
09ee6fdd | 5935 | |
2170c8f0 KH |
5936 | for (tail = translation_table; CONSP (tail); tail = XCDR (tail)) |
5937 | if (CHAR_TABLE_P (XCAR (tail)) | |
5938 | && CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (XCAR (tail))) > 1) | |
5939 | { | |
5940 | val = XCHAR_TABLE (XCAR (tail))->extras[1]; | |
5941 | if (NATNUMP (val) && *max_lookup < XFASTINT (val)) | |
5942 | *max_lookup = XFASTINT (val); | |
5943 | } | |
5944 | } | |
a6f87d34 | 5945 | } |
7d64c6ad KH |
5946 | return translation_table; |
5947 | } | |
5948 | ||
09ee6fdd KH |
5949 | #define LOOKUP_TRANSLATION_TABLE(table, c, trans) \ |
5950 | do { \ | |
5951 | trans = Qnil; \ | |
5952 | if (CHAR_TABLE_P (table)) \ | |
5953 | { \ | |
5954 | trans = CHAR_TABLE_REF (table, c); \ | |
5955 | if (CHARACTERP (trans)) \ | |
5956 | c = XFASTINT (trans), trans = Qnil; \ | |
5957 | } \ | |
5958 | else if (CONSP (table)) \ | |
5959 | { \ | |
5960 | Lisp_Object tail; \ | |
5961 | \ | |
5962 | for (tail = table; CONSP (tail); tail = XCDR (tail)) \ | |
5963 | if (CHAR_TABLE_P (XCAR (tail))) \ | |
5964 | { \ | |
5965 | trans = CHAR_TABLE_REF (XCAR (tail), c); \ | |
5966 | if (CHARACTERP (trans)) \ | |
5967 | c = XFASTINT (trans), trans = Qnil; \ | |
5968 | else if (! NILP (trans)) \ | |
5969 | break; \ | |
5970 | } \ | |
5971 | } \ | |
e6a54062 KH |
5972 | } while (0) |
5973 | ||
7d64c6ad | 5974 | |
69a80ea3 KH |
5975 | static Lisp_Object |
5976 | get_translation (val, buf, buf_end, last_block, from_nchars, to_nchars) | |
5977 | Lisp_Object val; | |
5978 | int *buf, *buf_end; | |
5979 | int last_block; | |
5980 | int *from_nchars, *to_nchars; | |
5981 | { | |
433f7f87 KH |
5982 | /* VAL is TO or (([FROM-CHAR ...] . TO) ...) where TO is TO-CHAR or |
5983 | [TO-CHAR ...]. */ | |
69a80ea3 KH |
5984 | if (CONSP (val)) |
5985 | { | |
433f7f87 | 5986 | Lisp_Object from, tail; |
69a80ea3 KH |
5987 | int i, len; |
5988 | ||
433f7f87 | 5989 | for (tail = val; CONSP (tail); tail = XCDR (tail)) |
69a80ea3 | 5990 | { |
433f7f87 KH |
5991 | val = XCAR (tail); |
5992 | from = XCAR (val); | |
5993 | len = ASIZE (from); | |
5994 | for (i = 0; i < len; i++) | |
5995 | { | |
5996 | if (buf + i == buf_end) | |
5997 | { | |
5998 | if (! last_block) | |
5999 | return Qt; | |
6000 | break; | |
6001 | } | |
6002 | if (XINT (AREF (from, i)) != buf[i]) | |
6003 | break; | |
6004 | } | |
6005 | if (i == len) | |
6006 | { | |
6007 | val = XCDR (val); | |
6008 | *from_nchars = len; | |
6009 | break; | |
6010 | } | |
69a80ea3 | 6011 | } |
433f7f87 KH |
6012 | if (! CONSP (tail)) |
6013 | return Qnil; | |
69a80ea3 KH |
6014 | } |
6015 | if (VECTORP (val)) | |
6016 | *buf = XINT (AREF (val, 0)), *to_nchars = ASIZE (val); | |
6017 | else | |
6018 | *buf = XINT (val); | |
6019 | return val; | |
6020 | } | |
6021 | ||
6022 | ||
d46c5b12 | 6023 | static int |
69a80ea3 | 6024 | produce_chars (coding, translation_table, last_block) |
df7492f9 | 6025 | struct coding_system *coding; |
69a80ea3 KH |
6026 | Lisp_Object translation_table; |
6027 | int last_block; | |
4ed46869 | 6028 | { |
df7492f9 KH |
6029 | unsigned char *dst = coding->destination + coding->produced; |
6030 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
119852e7 KH |
6031 | EMACS_INT produced; |
6032 | EMACS_INT produced_chars = 0; | |
69a80ea3 | 6033 | int carryover = 0; |
4ed46869 | 6034 | |
df7492f9 | 6035 | if (! coding->chars_at_source) |
4ed46869 | 6036 | { |
119852e7 | 6037 | /* Source characters are in coding->charbuf. */ |
fba4576f AS |
6038 | int *buf = coding->charbuf; |
6039 | int *buf_end = buf + coding->charbuf_used; | |
4ed46869 | 6040 | |
db274c7a KH |
6041 | if (EQ (coding->src_object, coding->dst_object)) |
6042 | { | |
6043 | coding_set_source (coding); | |
6044 | dst_end = ((unsigned char *) coding->source) + coding->consumed; | |
6045 | } | |
4ed46869 | 6046 | |
df7492f9 | 6047 | while (buf < buf_end) |
4ed46869 | 6048 | { |
69a80ea3 | 6049 | int c = *buf, i; |
bc4bc72a | 6050 | |
df7492f9 KH |
6051 | if (c >= 0) |
6052 | { | |
69a80ea3 KH |
6053 | int from_nchars = 1, to_nchars = 1; |
6054 | Lisp_Object trans = Qnil; | |
6055 | ||
09ee6fdd | 6056 | LOOKUP_TRANSLATION_TABLE (translation_table, c, trans); |
e6a54062 | 6057 | if (! NILP (trans)) |
69a80ea3 KH |
6058 | { |
6059 | trans = get_translation (trans, buf, buf_end, last_block, | |
6060 | &from_nchars, &to_nchars); | |
6061 | if (EQ (trans, Qt)) | |
6062 | break; | |
6063 | c = *buf; | |
6064 | } | |
6065 | ||
6066 | if (dst + MAX_MULTIBYTE_LENGTH * to_nchars > dst_end) | |
6067 | { | |
6068 | dst = alloc_destination (coding, | |
6069 | buf_end - buf | |
6070 | + MAX_MULTIBYTE_LENGTH * to_nchars, | |
6071 | dst); | |
db274c7a KH |
6072 | if (EQ (coding->src_object, coding->dst_object)) |
6073 | { | |
6074 | coding_set_source (coding); | |
6075 | dst_end = ((unsigned char *) coding->source) + coding->consumed; | |
6076 | } | |
6077 | else | |
6078 | dst_end = coding->destination + coding->dst_bytes; | |
69a80ea3 KH |
6079 | } |
6080 | ||
433f7f87 | 6081 | for (i = 0; i < to_nchars; i++) |
69a80ea3 | 6082 | { |
433f7f87 KH |
6083 | if (i > 0) |
6084 | c = XINT (AREF (trans, i)); | |
69a80ea3 KH |
6085 | if (coding->dst_multibyte |
6086 | || ! CHAR_BYTE8_P (c)) | |
db274c7a | 6087 | CHAR_STRING_ADVANCE_NO_UNIFY (c, dst); |
69a80ea3 KH |
6088 | else |
6089 | *dst++ = CHAR_TO_BYTE8 (c); | |
6090 | } | |
6091 | produced_chars += to_nchars; | |
6092 | *buf++ = to_nchars; | |
6093 | while (--from_nchars > 0) | |
6094 | *buf++ = 0; | |
d46c5b12 | 6095 | } |
df7492f9 | 6096 | else |
69a80ea3 KH |
6097 | /* This is an annotation datum. (-C) is the length. */ |
6098 | buf += -c; | |
4ed46869 | 6099 | } |
69a80ea3 | 6100 | carryover = buf_end - buf; |
4ed46869 | 6101 | } |
fa42c37f | 6102 | else |
fa42c37f | 6103 | { |
119852e7 | 6104 | /* Source characters are at coding->source. */ |
8f924df7 | 6105 | const unsigned char *src = coding->source; |
119852e7 | 6106 | const unsigned char *src_end = src + coding->consumed; |
4ed46869 | 6107 | |
db274c7a KH |
6108 | if (EQ (coding->dst_object, coding->src_object)) |
6109 | dst_end = (unsigned char *) src; | |
df7492f9 | 6110 | if (coding->src_multibyte != coding->dst_multibyte) |
fa42c37f | 6111 | { |
df7492f9 | 6112 | if (coding->src_multibyte) |
fa42c37f | 6113 | { |
71c81426 | 6114 | int multibytep = 1; |
119852e7 | 6115 | EMACS_INT consumed_chars; |
d46c5b12 | 6116 | |
df7492f9 KH |
6117 | while (1) |
6118 | { | |
8f924df7 | 6119 | const unsigned char *src_base = src; |
df7492f9 | 6120 | int c; |
b73bfc1c | 6121 | |
df7492f9 | 6122 | ONE_MORE_BYTE (c); |
119852e7 | 6123 | if (dst == dst_end) |
df7492f9 | 6124 | { |
119852e7 KH |
6125 | if (EQ (coding->src_object, coding->dst_object)) |
6126 | dst_end = (unsigned char *) src; | |
6127 | if (dst == dst_end) | |
df7492f9 | 6128 | { |
119852e7 KH |
6129 | EMACS_INT offset = src - coding->source; |
6130 | ||
6131 | dst = alloc_destination (coding, src_end - src + 1, | |
6132 | dst); | |
6133 | dst_end = coding->destination + coding->dst_bytes; | |
6134 | coding_set_source (coding); | |
6135 | src = coding->source + offset; | |
6136 | src_end = coding->source + coding->src_bytes; | |
db274c7a KH |
6137 | if (EQ (coding->src_object, coding->dst_object)) |
6138 | dst_end = (unsigned char *) src; | |
df7492f9 | 6139 | } |
df7492f9 KH |
6140 | } |
6141 | *dst++ = c; | |
6142 | produced_chars++; | |
6143 | } | |
6144 | no_more_source: | |
6145 | ; | |
fa42c37f KH |
6146 | } |
6147 | else | |
df7492f9 KH |
6148 | while (src < src_end) |
6149 | { | |
71c81426 | 6150 | int multibytep = 1; |
df7492f9 | 6151 | int c = *src++; |
b73bfc1c | 6152 | |
df7492f9 KH |
6153 | if (dst >= dst_end - 1) |
6154 | { | |
2c78b7e1 | 6155 | if (EQ (coding->src_object, coding->dst_object)) |
8f924df7 | 6156 | dst_end = (unsigned char *) src; |
2c78b7e1 KH |
6157 | if (dst >= dst_end - 1) |
6158 | { | |
119852e7 | 6159 | EMACS_INT offset = src - coding->source; |
db274c7a | 6160 | EMACS_INT more_bytes; |
119852e7 | 6161 | |
db274c7a KH |
6162 | if (EQ (coding->src_object, coding->dst_object)) |
6163 | more_bytes = ((src_end - src) / 2) + 2; | |
6164 | else | |
6165 | more_bytes = src_end - src + 2; | |
6166 | dst = alloc_destination (coding, more_bytes, dst); | |
2c78b7e1 KH |
6167 | dst_end = coding->destination + coding->dst_bytes; |
6168 | coding_set_source (coding); | |
119852e7 | 6169 | src = coding->source + offset; |
2c78b7e1 | 6170 | src_end = coding->source + coding->src_bytes; |
db274c7a KH |
6171 | if (EQ (coding->src_object, coding->dst_object)) |
6172 | dst_end = (unsigned char *) src; | |
2c78b7e1 | 6173 | } |
df7492f9 KH |
6174 | } |
6175 | EMIT_ONE_BYTE (c); | |
6176 | } | |
d46c5b12 | 6177 | } |
df7492f9 KH |
6178 | else |
6179 | { | |
6180 | if (!EQ (coding->src_object, coding->dst_object)) | |
fa42c37f | 6181 | { |
119852e7 | 6182 | EMACS_INT require = coding->src_bytes - coding->dst_bytes; |
4ed46869 | 6183 | |
df7492f9 | 6184 | if (require > 0) |
fa42c37f | 6185 | { |
df7492f9 KH |
6186 | EMACS_INT offset = src - coding->source; |
6187 | ||
6188 | dst = alloc_destination (coding, require, dst); | |
6189 | coding_set_source (coding); | |
6190 | src = coding->source + offset; | |
6191 | src_end = coding->source + coding->src_bytes; | |
fa42c37f KH |
6192 | } |
6193 | } | |
119852e7 | 6194 | produced_chars = coding->consumed_char; |
df7492f9 | 6195 | while (src < src_end) |
14daee73 | 6196 | *dst++ = *src++; |
fa42c37f KH |
6197 | } |
6198 | } | |
6199 | ||
df7492f9 | 6200 | produced = dst - (coding->destination + coding->produced); |
284201e4 | 6201 | if (BUFFERP (coding->dst_object) && produced_chars > 0) |
df7492f9 KH |
6202 | insert_from_gap (produced_chars, produced); |
6203 | coding->produced += produced; | |
6204 | coding->produced_char += produced_chars; | |
69a80ea3 | 6205 | return carryover; |
fa42c37f KH |
6206 | } |
6207 | ||
ff0dacd7 KH |
6208 | /* Compose text in CODING->object according to the annotation data at |
6209 | CHARBUF. CHARBUF is an array: | |
6210 | [ -LENGTH ANNOTATION_MASK FROM TO METHOD COMP_LEN [ COMPONENTS... ] ] | |
df7492f9 | 6211 | */ |
4ed46869 | 6212 | |
df7492f9 | 6213 | static INLINE void |
69a80ea3 | 6214 | produce_composition (coding, charbuf, pos) |
4ed46869 | 6215 | struct coding_system *coding; |
df7492f9 | 6216 | int *charbuf; |
69a80ea3 | 6217 | EMACS_INT pos; |
4ed46869 | 6218 | { |
df7492f9 | 6219 | int len; |
69a80ea3 | 6220 | EMACS_INT to; |
df7492f9 | 6221 | enum composition_method method; |
df7492f9 | 6222 | Lisp_Object components; |
fa42c37f | 6223 | |
df7492f9 | 6224 | len = -charbuf[0]; |
69a80ea3 | 6225 | to = pos + charbuf[2]; |
9ffd559c KH |
6226 | if (to <= pos) |
6227 | return; | |
69a80ea3 | 6228 | method = (enum composition_method) (charbuf[3]); |
d46c5b12 | 6229 | |
df7492f9 KH |
6230 | if (method == COMPOSITION_RELATIVE) |
6231 | components = Qnil; | |
9ffd559c KH |
6232 | else if (method >= COMPOSITION_WITH_RULE |
6233 | && method <= COMPOSITION_WITH_RULE_ALTCHARS) | |
d46c5b12 | 6234 | { |
df7492f9 KH |
6235 | Lisp_Object args[MAX_COMPOSITION_COMPONENTS * 2 - 1]; |
6236 | int i; | |
b73bfc1c | 6237 | |
69a80ea3 KH |
6238 | len -= 4; |
6239 | charbuf += 4; | |
df7492f9 | 6240 | for (i = 0; i < len; i++) |
9ffd559c KH |
6241 | { |
6242 | args[i] = make_number (charbuf[i]); | |
f75c90a9 | 6243 | if (charbuf[i] < 0) |
9ffd559c KH |
6244 | return; |
6245 | } | |
df7492f9 KH |
6246 | components = (method == COMPOSITION_WITH_ALTCHARS |
6247 | ? Fstring (len, args) : Fvector (len, args)); | |
d46c5b12 | 6248 | } |
9ffd559c KH |
6249 | else |
6250 | return; | |
69a80ea3 | 6251 | compose_text (pos, to, components, Qnil, coding->dst_object); |
d46c5b12 KH |
6252 | } |
6253 | ||
d46c5b12 | 6254 | |
ff0dacd7 KH |
6255 | /* Put `charset' property on text in CODING->object according to |
6256 | the annotation data at CHARBUF. CHARBUF is an array: | |
69a80ea3 | 6257 | [ -LENGTH ANNOTATION_MASK NCHARS CHARSET-ID ] |
ff0dacd7 | 6258 | */ |
d46c5b12 | 6259 | |
ff0dacd7 | 6260 | static INLINE void |
69a80ea3 | 6261 | produce_charset (coding, charbuf, pos) |
d46c5b12 | 6262 | struct coding_system *coding; |
ff0dacd7 | 6263 | int *charbuf; |
69a80ea3 | 6264 | EMACS_INT pos; |
d46c5b12 | 6265 | { |
69a80ea3 KH |
6266 | EMACS_INT from = pos - charbuf[2]; |
6267 | struct charset *charset = CHARSET_FROM_ID (charbuf[3]); | |
b73bfc1c | 6268 | |
69a80ea3 | 6269 | Fput_text_property (make_number (from), make_number (pos), |
ff0dacd7 KH |
6270 | Qcharset, CHARSET_NAME (charset), |
6271 | coding->dst_object); | |
d46c5b12 KH |
6272 | } |
6273 | ||
d46c5b12 | 6274 | |
df7492f9 KH |
6275 | #define CHARBUF_SIZE 0x4000 |
6276 | ||
6277 | #define ALLOC_CONVERSION_WORK_AREA(coding) \ | |
6278 | do { \ | |
6279 | int size = CHARBUF_SIZE;; \ | |
6280 | \ | |
6281 | coding->charbuf = NULL; \ | |
6282 | while (size > 1024) \ | |
6283 | { \ | |
6284 | coding->charbuf = (int *) alloca (sizeof (int) * size); \ | |
6285 | if (coding->charbuf) \ | |
6286 | break; \ | |
6287 | size >>= 1; \ | |
6288 | } \ | |
6289 | if (! coding->charbuf) \ | |
6290 | { \ | |
065e3595 | 6291 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_MEM); \ |
df7492f9 KH |
6292 | return coding->result; \ |
6293 | } \ | |
6294 | coding->charbuf_size = size; \ | |
6295 | } while (0) | |
4ed46869 | 6296 | |
d46c5b12 KH |
6297 | |
6298 | static void | |
69a80ea3 | 6299 | produce_annotation (coding, pos) |
d46c5b12 | 6300 | struct coding_system *coding; |
69a80ea3 | 6301 | EMACS_INT pos; |
d46c5b12 | 6302 | { |
df7492f9 KH |
6303 | int *charbuf = coding->charbuf; |
6304 | int *charbuf_end = charbuf + coding->charbuf_used; | |
d46c5b12 | 6305 | |
ff0dacd7 KH |
6306 | if (NILP (coding->dst_object)) |
6307 | return; | |
d46c5b12 | 6308 | |
df7492f9 | 6309 | while (charbuf < charbuf_end) |
a84f1519 | 6310 | { |
df7492f9 | 6311 | if (*charbuf >= 0) |
69a80ea3 | 6312 | pos += *charbuf++; |
d46c5b12 | 6313 | else |
d46c5b12 | 6314 | { |
df7492f9 | 6315 | int len = -*charbuf; |
ff0dacd7 | 6316 | switch (charbuf[1]) |
df7492f9 KH |
6317 | { |
6318 | case CODING_ANNOTATE_COMPOSITION_MASK: | |
69a80ea3 | 6319 | produce_composition (coding, charbuf, pos); |
df7492f9 | 6320 | break; |
ff0dacd7 | 6321 | case CODING_ANNOTATE_CHARSET_MASK: |
69a80ea3 | 6322 | produce_charset (coding, charbuf, pos); |
ff0dacd7 | 6323 | break; |
df7492f9 KH |
6324 | default: |
6325 | abort (); | |
6326 | } | |
6327 | charbuf += len; | |
d46c5b12 | 6328 | } |
a84f1519 | 6329 | } |
d46c5b12 KH |
6330 | } |
6331 | ||
df7492f9 KH |
6332 | /* Decode the data at CODING->src_object into CODING->dst_object. |
6333 | CODING->src_object is a buffer, a string, or nil. | |
6334 | CODING->dst_object is a buffer. | |
d46c5b12 | 6335 | |
df7492f9 KH |
6336 | If CODING->src_object is a buffer, it must be the current buffer. |
6337 | In this case, if CODING->src_pos is positive, it is a position of | |
6338 | the source text in the buffer, otherwise, the source text is in the | |
6339 | gap area of the buffer, and CODING->src_pos specifies the offset of | |
6340 | the text from GPT (which must be the same as PT). If this is the | |
6341 | same buffer as CODING->dst_object, CODING->src_pos must be | |
6342 | negative. | |
d46c5b12 | 6343 | |
b6828792 | 6344 | If CODING->src_object is a string, CODING->src_pos is an index to |
df7492f9 | 6345 | that string. |
d46c5b12 | 6346 | |
df7492f9 KH |
6347 | If CODING->src_object is nil, CODING->source must already point to |
6348 | the non-relocatable memory area. In this case, CODING->src_pos is | |
6349 | an offset from CODING->source. | |
73be902c | 6350 | |
df7492f9 KH |
6351 | The decoded data is inserted at the current point of the buffer |
6352 | CODING->dst_object. | |
6353 | */ | |
d46c5b12 | 6354 | |
df7492f9 KH |
6355 | static int |
6356 | decode_coding (coding) | |
d46c5b12 | 6357 | struct coding_system *coding; |
d46c5b12 | 6358 | { |
df7492f9 | 6359 | Lisp_Object attrs; |
24a73b0a | 6360 | Lisp_Object undo_list; |
7d64c6ad | 6361 | Lisp_Object translation_table; |
69a80ea3 KH |
6362 | int carryover; |
6363 | int i; | |
d46c5b12 | 6364 | |
df7492f9 KH |
6365 | if (BUFFERP (coding->src_object) |
6366 | && coding->src_pos > 0 | |
6367 | && coding->src_pos < GPT | |
6368 | && coding->src_pos + coding->src_chars > GPT) | |
6369 | move_gap_both (coding->src_pos, coding->src_pos_byte); | |
d46c5b12 | 6370 | |
24a73b0a | 6371 | undo_list = Qt; |
df7492f9 | 6372 | if (BUFFERP (coding->dst_object)) |
1c3478b0 | 6373 | { |
df7492f9 KH |
6374 | if (current_buffer != XBUFFER (coding->dst_object)) |
6375 | set_buffer_internal (XBUFFER (coding->dst_object)); | |
6376 | if (GPT != PT) | |
6377 | move_gap_both (PT, PT_BYTE); | |
24a73b0a KH |
6378 | undo_list = current_buffer->undo_list; |
6379 | current_buffer->undo_list = Qt; | |
1c3478b0 KH |
6380 | } |
6381 | ||
df7492f9 KH |
6382 | coding->consumed = coding->consumed_char = 0; |
6383 | coding->produced = coding->produced_char = 0; | |
6384 | coding->chars_at_source = 0; | |
065e3595 | 6385 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 | 6386 | coding->errors = 0; |
1c3478b0 | 6387 | |
df7492f9 KH |
6388 | ALLOC_CONVERSION_WORK_AREA (coding); |
6389 | ||
6390 | attrs = CODING_ID_ATTRS (coding->id); | |
2170c8f0 | 6391 | translation_table = get_translation_table (attrs, 0, NULL); |
df7492f9 | 6392 | |
69a80ea3 | 6393 | carryover = 0; |
df7492f9 | 6394 | do |
b73bfc1c | 6395 | { |
69a80ea3 KH |
6396 | EMACS_INT pos = coding->dst_pos + coding->produced_char; |
6397 | ||
df7492f9 KH |
6398 | coding_set_source (coding); |
6399 | coding->annotated = 0; | |
69a80ea3 | 6400 | coding->charbuf_used = carryover; |
df7492f9 | 6401 | (*(coding->decoder)) (coding); |
df7492f9 | 6402 | coding_set_destination (coding); |
69a80ea3 | 6403 | carryover = produce_chars (coding, translation_table, 0); |
df7492f9 | 6404 | if (coding->annotated) |
69a80ea3 KH |
6405 | produce_annotation (coding, pos); |
6406 | for (i = 0; i < carryover; i++) | |
6407 | coding->charbuf[i] | |
6408 | = coding->charbuf[coding->charbuf_used - carryover + i]; | |
d46c5b12 | 6409 | } |
df7492f9 | 6410 | while (coding->consumed < coding->src_bytes |
54b367bb KH |
6411 | && (coding->result == CODING_RESULT_SUCCESS |
6412 | || coding->result == CODING_RESULT_INVALID_SRC)); | |
d46c5b12 | 6413 | |
69a80ea3 KH |
6414 | if (carryover > 0) |
6415 | { | |
6416 | coding_set_destination (coding); | |
6417 | coding->charbuf_used = carryover; | |
6418 | produce_chars (coding, translation_table, 1); | |
6419 | } | |
6420 | ||
df7492f9 KH |
6421 | coding->carryover_bytes = 0; |
6422 | if (coding->consumed < coding->src_bytes) | |
d46c5b12 | 6423 | { |
df7492f9 | 6424 | int nbytes = coding->src_bytes - coding->consumed; |
8f924df7 | 6425 | const unsigned char *src; |
df7492f9 KH |
6426 | |
6427 | coding_set_source (coding); | |
6428 | coding_set_destination (coding); | |
6429 | src = coding->source + coding->consumed; | |
6430 | ||
6431 | if (coding->mode & CODING_MODE_LAST_BLOCK) | |
1c3478b0 | 6432 | { |
df7492f9 KH |
6433 | /* Flush out unprocessed data as binary chars. We are sure |
6434 | that the number of data is less than the size of | |
6435 | coding->charbuf. */ | |
065e3595 | 6436 | coding->charbuf_used = 0; |
df7492f9 | 6437 | while (nbytes-- > 0) |
1c3478b0 | 6438 | { |
df7492f9 | 6439 | int c = *src++; |
98725083 | 6440 | |
1c91457d KH |
6441 | if (c & 0x80) |
6442 | c = BYTE8_TO_CHAR (c); | |
6443 | coding->charbuf[coding->charbuf_used++] = c; | |
1c3478b0 | 6444 | } |
f6cbaf43 | 6445 | produce_chars (coding, Qnil, 1); |
d46c5b12 | 6446 | } |
d46c5b12 | 6447 | else |
df7492f9 KH |
6448 | { |
6449 | /* Record unprocessed bytes in coding->carryover. We are | |
6450 | sure that the number of data is less than the size of | |
6451 | coding->carryover. */ | |
6452 | unsigned char *p = coding->carryover; | |
6453 | ||
6454 | coding->carryover_bytes = nbytes; | |
6455 | while (nbytes-- > 0) | |
6456 | *p++ = *src++; | |
1c3478b0 | 6457 | } |
df7492f9 | 6458 | coding->consumed = coding->src_bytes; |
b73bfc1c | 6459 | } |
69f76525 | 6460 | |
4347441b KH |
6461 | if (! EQ (CODING_ID_EOL_TYPE (coding->id), Qunix)) |
6462 | decode_eol (coding); | |
24a73b0a KH |
6463 | if (BUFFERP (coding->dst_object)) |
6464 | { | |
6465 | current_buffer->undo_list = undo_list; | |
6466 | record_insert (coding->dst_pos, coding->produced_char); | |
6467 | } | |
73be902c | 6468 | return coding->result; |
4ed46869 KH |
6469 | } |
6470 | ||
aaaf0b1e | 6471 | |
e1c23804 | 6472 | /* Extract an annotation datum from a composition starting at POS and |
ff0dacd7 KH |
6473 | ending before LIMIT of CODING->src_object (buffer or string), store |
6474 | the data in BUF, set *STOP to a starting position of the next | |
6475 | composition (if any) or to LIMIT, and return the address of the | |
6476 | next element of BUF. | |
6477 | ||
6478 | If such an annotation is not found, set *STOP to a starting | |
6479 | position of a composition after POS (if any) or to LIMIT, and | |
6480 | return BUF. */ | |
6481 | ||
6482 | static INLINE int * | |
6483 | handle_composition_annotation (pos, limit, coding, buf, stop) | |
6484 | EMACS_INT pos, limit; | |
aaaf0b1e | 6485 | struct coding_system *coding; |
ff0dacd7 KH |
6486 | int *buf; |
6487 | EMACS_INT *stop; | |
aaaf0b1e | 6488 | { |
ff0dacd7 KH |
6489 | EMACS_INT start, end; |
6490 | Lisp_Object prop; | |
aaaf0b1e | 6491 | |
ff0dacd7 KH |
6492 | if (! find_composition (pos, limit, &start, &end, &prop, coding->src_object) |
6493 | || end > limit) | |
6494 | *stop = limit; | |
6495 | else if (start > pos) | |
6496 | *stop = start; | |
6497 | else | |
aaaf0b1e | 6498 | { |
ff0dacd7 | 6499 | if (start == pos) |
aaaf0b1e | 6500 | { |
ff0dacd7 KH |
6501 | /* We found a composition. Store the corresponding |
6502 | annotation data in BUF. */ | |
6503 | int *head = buf; | |
6504 | enum composition_method method = COMPOSITION_METHOD (prop); | |
6505 | int nchars = COMPOSITION_LENGTH (prop); | |
6506 | ||
69a80ea3 | 6507 | ADD_COMPOSITION_DATA (buf, nchars, method); |
ff0dacd7 | 6508 | if (method != COMPOSITION_RELATIVE) |
aaaf0b1e | 6509 | { |
ff0dacd7 KH |
6510 | Lisp_Object components; |
6511 | int len, i, i_byte; | |
6512 | ||
6513 | components = COMPOSITION_COMPONENTS (prop); | |
6514 | if (VECTORP (components)) | |
aaaf0b1e | 6515 | { |
ff0dacd7 KH |
6516 | len = XVECTOR (components)->size; |
6517 | for (i = 0; i < len; i++) | |
6518 | *buf++ = XINT (AREF (components, i)); | |
aaaf0b1e | 6519 | } |
ff0dacd7 | 6520 | else if (STRINGP (components)) |
aaaf0b1e | 6521 | { |
8f924df7 | 6522 | len = SCHARS (components); |
ff0dacd7 KH |
6523 | i = i_byte = 0; |
6524 | while (i < len) | |
6525 | { | |
6526 | FETCH_STRING_CHAR_ADVANCE (*buf, components, i, i_byte); | |
6527 | buf++; | |
6528 | } | |
6529 | } | |
6530 | else if (INTEGERP (components)) | |
6531 | { | |
6532 | len = 1; | |
6533 | *buf++ = XINT (components); | |
6534 | } | |
6535 | else if (CONSP (components)) | |
6536 | { | |
6537 | for (len = 0; CONSP (components); | |
6538 | len++, components = XCDR (components)) | |
6539 | *buf++ = XINT (XCAR (components)); | |
aaaf0b1e | 6540 | } |
aaaf0b1e | 6541 | else |
ff0dacd7 KH |
6542 | abort (); |
6543 | *head -= len; | |
aaaf0b1e | 6544 | } |
aaaf0b1e | 6545 | } |
ff0dacd7 KH |
6546 | |
6547 | if (find_composition (end, limit, &start, &end, &prop, | |
6548 | coding->src_object) | |
6549 | && end <= limit) | |
6550 | *stop = start; | |
6551 | else | |
6552 | *stop = limit; | |
aaaf0b1e | 6553 | } |
ff0dacd7 KH |
6554 | return buf; |
6555 | } | |
6556 | ||
6557 | ||
e1c23804 | 6558 | /* Extract an annotation datum from a text property `charset' at POS of |
ff0dacd7 KH |
6559 | CODING->src_object (buffer of string), store the data in BUF, set |
6560 | *STOP to the position where the value of `charset' property changes | |
6561 | (limiting by LIMIT), and return the address of the next element of | |
6562 | BUF. | |
6563 | ||
6564 | If the property value is nil, set *STOP to the position where the | |
6565 | property value is non-nil (limiting by LIMIT), and return BUF. */ | |
6566 | ||
6567 | static INLINE int * | |
6568 | handle_charset_annotation (pos, limit, coding, buf, stop) | |
6569 | EMACS_INT pos, limit; | |
6570 | struct coding_system *coding; | |
6571 | int *buf; | |
6572 | EMACS_INT *stop; | |
6573 | { | |
6574 | Lisp_Object val, next; | |
6575 | int id; | |
6576 | ||
6577 | val = Fget_text_property (make_number (pos), Qcharset, coding->src_object); | |
6578 | if (! NILP (val) && CHARSETP (val)) | |
6579 | id = XINT (CHARSET_SYMBOL_ID (val)); | |
6580 | else | |
6581 | id = -1; | |
69a80ea3 | 6582 | ADD_CHARSET_DATA (buf, 0, id); |
ff0dacd7 KH |
6583 | next = Fnext_single_property_change (make_number (pos), Qcharset, |
6584 | coding->src_object, | |
6585 | make_number (limit)); | |
6586 | *stop = XINT (next); | |
6587 | return buf; | |
6588 | } | |
6589 | ||
6590 | ||
df7492f9 | 6591 | static void |
09ee6fdd | 6592 | consume_chars (coding, translation_table, max_lookup) |
df7492f9 | 6593 | struct coding_system *coding; |
433f7f87 | 6594 | Lisp_Object translation_table; |
09ee6fdd | 6595 | int max_lookup; |
df7492f9 KH |
6596 | { |
6597 | int *buf = coding->charbuf; | |
ff0dacd7 | 6598 | int *buf_end = coding->charbuf + coding->charbuf_size; |
7c78e542 | 6599 | const unsigned char *src = coding->source + coding->consumed; |
4776e638 | 6600 | const unsigned char *src_end = coding->source + coding->src_bytes; |
ff0dacd7 KH |
6601 | EMACS_INT pos = coding->src_pos + coding->consumed_char; |
6602 | EMACS_INT end_pos = coding->src_pos + coding->src_chars; | |
df7492f9 KH |
6603 | int multibytep = coding->src_multibyte; |
6604 | Lisp_Object eol_type; | |
6605 | int c; | |
ff0dacd7 | 6606 | EMACS_INT stop, stop_composition, stop_charset; |
09ee6fdd | 6607 | int *lookup_buf = NULL; |
433f7f87 KH |
6608 | |
6609 | if (! NILP (translation_table)) | |
09ee6fdd | 6610 | lookup_buf = alloca (sizeof (int) * max_lookup); |
88993dfd | 6611 | |
df7492f9 KH |
6612 | eol_type = CODING_ID_EOL_TYPE (coding->id); |
6613 | if (VECTORP (eol_type)) | |
6614 | eol_type = Qunix; | |
88993dfd | 6615 | |
df7492f9 KH |
6616 | /* Note: composition handling is not yet implemented. */ |
6617 | coding->common_flags &= ~CODING_ANNOTATE_COMPOSITION_MASK; | |
ec6d2bb8 | 6618 | |
0b5670c9 KH |
6619 | if (NILP (coding->src_object)) |
6620 | stop = stop_composition = stop_charset = end_pos; | |
ff0dacd7 | 6621 | else |
0b5670c9 KH |
6622 | { |
6623 | if (coding->common_flags & CODING_ANNOTATE_COMPOSITION_MASK) | |
6624 | stop = stop_composition = pos; | |
6625 | else | |
6626 | stop = stop_composition = end_pos; | |
6627 | if (coding->common_flags & CODING_ANNOTATE_CHARSET_MASK) | |
6628 | stop = stop_charset = pos; | |
6629 | else | |
6630 | stop_charset = end_pos; | |
6631 | } | |
ec6d2bb8 | 6632 | |
24a73b0a | 6633 | /* Compensate for CRLF and conversion. */ |
ff0dacd7 | 6634 | buf_end -= 1 + MAX_ANNOTATION_LENGTH; |
df7492f9 | 6635 | while (buf < buf_end) |
aaaf0b1e | 6636 | { |
433f7f87 KH |
6637 | Lisp_Object trans; |
6638 | ||
df7492f9 | 6639 | if (pos == stop) |
ec6d2bb8 | 6640 | { |
df7492f9 KH |
6641 | if (pos == end_pos) |
6642 | break; | |
ff0dacd7 KH |
6643 | if (pos == stop_composition) |
6644 | buf = handle_composition_annotation (pos, end_pos, coding, | |
6645 | buf, &stop_composition); | |
6646 | if (pos == stop_charset) | |
6647 | buf = handle_charset_annotation (pos, end_pos, coding, | |
6648 | buf, &stop_charset); | |
6649 | stop = (stop_composition < stop_charset | |
6650 | ? stop_composition : stop_charset); | |
df7492f9 KH |
6651 | } |
6652 | ||
6653 | if (! multibytep) | |
4776e638 | 6654 | { |
d3e4cb56 | 6655 | EMACS_INT bytes; |
aaaf0b1e | 6656 | |
ea29edf2 KH |
6657 | if (coding->encoder == encode_coding_raw_text) |
6658 | c = *src++, pos++; | |
6659 | else if ((bytes = MULTIBYTE_LENGTH (src, src_end)) > 0) | |
db274c7a | 6660 | c = STRING_CHAR_ADVANCE_NO_UNIFY (src), pos += bytes; |
4776e638 | 6661 | else |
f03caae0 | 6662 | c = BYTE8_TO_CHAR (*src), src++, pos++; |
4776e638 | 6663 | } |
df7492f9 | 6664 | else |
db274c7a | 6665 | c = STRING_CHAR_ADVANCE_NO_UNIFY (src), pos++; |
df7492f9 KH |
6666 | if ((c == '\r') && (coding->mode & CODING_MODE_SELECTIVE_DISPLAY)) |
6667 | c = '\n'; | |
6668 | if (! EQ (eol_type, Qunix)) | |
aaaf0b1e | 6669 | { |
df7492f9 | 6670 | if (c == '\n') |
aaaf0b1e | 6671 | { |
df7492f9 KH |
6672 | if (EQ (eol_type, Qdos)) |
6673 | *buf++ = '\r'; | |
6674 | else | |
6675 | c = '\r'; | |
aaaf0b1e KH |
6676 | } |
6677 | } | |
433f7f87 | 6678 | |
e6a54062 | 6679 | trans = Qnil; |
09ee6fdd | 6680 | LOOKUP_TRANSLATION_TABLE (translation_table, c, trans); |
e6a54062 | 6681 | if (NILP (trans)) |
433f7f87 KH |
6682 | *buf++ = c; |
6683 | else | |
6684 | { | |
6685 | int from_nchars = 1, to_nchars = 1; | |
6686 | int *lookup_buf_end; | |
6687 | const unsigned char *p = src; | |
6688 | int i; | |
6689 | ||
6690 | lookup_buf[0] = c; | |
6691 | for (i = 1; i < max_lookup && p < src_end; i++) | |
6692 | lookup_buf[i] = STRING_CHAR_ADVANCE (p); | |
6693 | lookup_buf_end = lookup_buf + i; | |
6694 | trans = get_translation (trans, lookup_buf, lookup_buf_end, 1, | |
6695 | &from_nchars, &to_nchars); | |
6696 | if (EQ (trans, Qt) | |
6697 | || buf + to_nchars > buf_end) | |
6698 | break; | |
6699 | *buf++ = *lookup_buf; | |
6700 | for (i = 1; i < to_nchars; i++) | |
6701 | *buf++ = XINT (AREF (trans, i)); | |
6702 | for (i = 1; i < from_nchars; i++, pos++) | |
6703 | src += MULTIBYTE_LENGTH_NO_CHECK (src); | |
6704 | } | |
aaaf0b1e | 6705 | } |
ec6d2bb8 | 6706 | |
df7492f9 KH |
6707 | coding->consumed = src - coding->source; |
6708 | coding->consumed_char = pos - coding->src_pos; | |
6709 | coding->charbuf_used = buf - coding->charbuf; | |
6710 | coding->chars_at_source = 0; | |
aaaf0b1e KH |
6711 | } |
6712 | ||
4ed46869 | 6713 | |
df7492f9 KH |
6714 | /* Encode the text at CODING->src_object into CODING->dst_object. |
6715 | CODING->src_object is a buffer or a string. | |
6716 | CODING->dst_object is a buffer or nil. | |
6717 | ||
6718 | If CODING->src_object is a buffer, it must be the current buffer. | |
6719 | In this case, if CODING->src_pos is positive, it is a position of | |
6720 | the source text in the buffer, otherwise. the source text is in the | |
6721 | gap area of the buffer, and coding->src_pos specifies the offset of | |
6722 | the text from GPT (which must be the same as PT). If this is the | |
6723 | same buffer as CODING->dst_object, CODING->src_pos must be | |
6724 | negative and CODING should not have `pre-write-conversion'. | |
6725 | ||
6726 | If CODING->src_object is a string, CODING should not have | |
6727 | `pre-write-conversion'. | |
6728 | ||
6729 | If CODING->dst_object is a buffer, the encoded data is inserted at | |
6730 | the current point of that buffer. | |
6731 | ||
6732 | If CODING->dst_object is nil, the encoded data is placed at the | |
6733 | memory area specified by CODING->destination. */ | |
6734 | ||
6735 | static int | |
6736 | encode_coding (coding) | |
4ed46869 | 6737 | struct coding_system *coding; |
4ed46869 | 6738 | { |
df7492f9 | 6739 | Lisp_Object attrs; |
7d64c6ad | 6740 | Lisp_Object translation_table; |
09ee6fdd | 6741 | int max_lookup; |
9861e777 | 6742 | |
df7492f9 | 6743 | attrs = CODING_ID_ATTRS (coding->id); |
ea29edf2 KH |
6744 | if (coding->encoder == encode_coding_raw_text) |
6745 | translation_table = Qnil, max_lookup = 0; | |
6746 | else | |
6747 | translation_table = get_translation_table (attrs, 1, &max_lookup); | |
4ed46869 | 6748 | |
df7492f9 | 6749 | if (BUFFERP (coding->dst_object)) |
8844fa83 | 6750 | { |
df7492f9 KH |
6751 | set_buffer_internal (XBUFFER (coding->dst_object)); |
6752 | coding->dst_multibyte | |
6753 | = ! NILP (current_buffer->enable_multibyte_characters); | |
8844fa83 | 6754 | } |
4ed46869 | 6755 | |
b73bfc1c | 6756 | coding->consumed = coding->consumed_char = 0; |
df7492f9 | 6757 | coding->produced = coding->produced_char = 0; |
065e3595 | 6758 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
b73bfc1c | 6759 | coding->errors = 0; |
b73bfc1c | 6760 | |
df7492f9 | 6761 | ALLOC_CONVERSION_WORK_AREA (coding); |
4ed46869 | 6762 | |
df7492f9 KH |
6763 | do { |
6764 | coding_set_source (coding); | |
09ee6fdd | 6765 | consume_chars (coding, translation_table, max_lookup); |
df7492f9 KH |
6766 | coding_set_destination (coding); |
6767 | (*(coding->encoder)) (coding); | |
6768 | } while (coding->consumed_char < coding->src_chars); | |
6769 | ||
284201e4 | 6770 | if (BUFFERP (coding->dst_object) && coding->produced_char > 0) |
df7492f9 KH |
6771 | insert_from_gap (coding->produced_char, coding->produced); |
6772 | ||
6773 | return (coding->result); | |
ec6d2bb8 KH |
6774 | } |
6775 | ||
fb88bf2d | 6776 | |
24a73b0a KH |
6777 | /* Name (or base name) of work buffer for code conversion. */ |
6778 | static Lisp_Object Vcode_conversion_workbuf_name; | |
d46c5b12 | 6779 | |
24a73b0a KH |
6780 | /* A working buffer used by the top level conversion. Once it is |
6781 | created, it is never destroyed. It has the name | |
6782 | Vcode_conversion_workbuf_name. The other working buffers are | |
6783 | destroyed after the use is finished, and their names are modified | |
6784 | versions of Vcode_conversion_workbuf_name. */ | |
6785 | static Lisp_Object Vcode_conversion_reused_workbuf; | |
b73bfc1c | 6786 | |
24a73b0a KH |
6787 | /* 1 iff Vcode_conversion_reused_workbuf is already in use. */ |
6788 | static int reused_workbuf_in_use; | |
4ed46869 | 6789 | |
24a73b0a KH |
6790 | |
6791 | /* Return a working buffer of code convesion. MULTIBYTE specifies the | |
6792 | multibyteness of returning buffer. */ | |
b73bfc1c | 6793 | |
f6cbaf43 | 6794 | static Lisp_Object |
24a73b0a | 6795 | make_conversion_work_buffer (multibyte) |
f6cbaf43 | 6796 | int multibyte; |
df7492f9 | 6797 | { |
24a73b0a KH |
6798 | Lisp_Object name, workbuf; |
6799 | struct buffer *current; | |
4ed46869 | 6800 | |
24a73b0a | 6801 | if (reused_workbuf_in_use++) |
065e3595 KH |
6802 | { |
6803 | name = Fgenerate_new_buffer_name (Vcode_conversion_workbuf_name, Qnil); | |
6804 | workbuf = Fget_buffer_create (name); | |
6805 | } | |
df7492f9 | 6806 | else |
065e3595 KH |
6807 | { |
6808 | name = Vcode_conversion_workbuf_name; | |
6809 | workbuf = Fget_buffer_create (name); | |
6810 | if (NILP (Vcode_conversion_reused_workbuf)) | |
6811 | Vcode_conversion_reused_workbuf = workbuf; | |
6812 | } | |
24a73b0a KH |
6813 | current = current_buffer; |
6814 | set_buffer_internal (XBUFFER (workbuf)); | |
6815 | Ferase_buffer (); | |
df7492f9 | 6816 | current_buffer->undo_list = Qt; |
24a73b0a | 6817 | current_buffer->enable_multibyte_characters = multibyte ? Qt : Qnil; |
df7492f9 | 6818 | set_buffer_internal (current); |
24a73b0a | 6819 | return workbuf; |
df7492f9 | 6820 | } |
d46c5b12 | 6821 | |
24a73b0a | 6822 | |
4776e638 | 6823 | static Lisp_Object |
24a73b0a KH |
6824 | code_conversion_restore (arg) |
6825 | Lisp_Object arg; | |
4776e638 | 6826 | { |
24a73b0a | 6827 | Lisp_Object current, workbuf; |
948bdcf3 | 6828 | struct gcpro gcpro1; |
24a73b0a | 6829 | |
948bdcf3 | 6830 | GCPRO1 (arg); |
24a73b0a KH |
6831 | current = XCAR (arg); |
6832 | workbuf = XCDR (arg); | |
6833 | if (! NILP (workbuf)) | |
6834 | { | |
6835 | if (EQ (workbuf, Vcode_conversion_reused_workbuf)) | |
6836 | reused_workbuf_in_use = 0; | |
6837 | else if (! NILP (Fbuffer_live_p (workbuf))) | |
6838 | Fkill_buffer (workbuf); | |
6839 | } | |
6840 | set_buffer_internal (XBUFFER (current)); | |
948bdcf3 | 6841 | UNGCPRO; |
4776e638 KH |
6842 | return Qnil; |
6843 | } | |
b73bfc1c | 6844 | |
24a73b0a KH |
6845 | Lisp_Object |
6846 | code_conversion_save (with_work_buf, multibyte) | |
4776e638 | 6847 | int with_work_buf, multibyte; |
df7492f9 | 6848 | { |
24a73b0a | 6849 | Lisp_Object workbuf = Qnil; |
b73bfc1c | 6850 | |
4776e638 | 6851 | if (with_work_buf) |
24a73b0a KH |
6852 | workbuf = make_conversion_work_buffer (multibyte); |
6853 | record_unwind_protect (code_conversion_restore, | |
6854 | Fcons (Fcurrent_buffer (), workbuf)); | |
4776e638 | 6855 | return workbuf; |
df7492f9 | 6856 | } |
d46c5b12 | 6857 | |
df7492f9 KH |
6858 | int |
6859 | decode_coding_gap (coding, chars, bytes) | |
6860 | struct coding_system *coding; | |
6861 | EMACS_INT chars, bytes; | |
6862 | { | |
6863 | int count = specpdl_ptr - specpdl; | |
5e5c78be | 6864 | Lisp_Object attrs; |
fb88bf2d | 6865 | |
24a73b0a | 6866 | code_conversion_save (0, 0); |
ec6d2bb8 | 6867 | |
24a73b0a | 6868 | coding->src_object = Fcurrent_buffer (); |
df7492f9 KH |
6869 | coding->src_chars = chars; |
6870 | coding->src_bytes = bytes; | |
6871 | coding->src_pos = -chars; | |
6872 | coding->src_pos_byte = -bytes; | |
6873 | coding->src_multibyte = chars < bytes; | |
24a73b0a | 6874 | coding->dst_object = coding->src_object; |
df7492f9 KH |
6875 | coding->dst_pos = PT; |
6876 | coding->dst_pos_byte = PT_BYTE; | |
71c81426 | 6877 | coding->dst_multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
4ed46869 | 6878 | |
df7492f9 KH |
6879 | if (CODING_REQUIRE_DETECTION (coding)) |
6880 | detect_coding (coding); | |
8f924df7 | 6881 | |
9286b333 | 6882 | coding->mode |= CODING_MODE_LAST_BLOCK; |
287c57d7 | 6883 | current_buffer->text->inhibit_shrinking = 1; |
df7492f9 | 6884 | decode_coding (coding); |
287c57d7 | 6885 | current_buffer->text->inhibit_shrinking = 0; |
d46c5b12 | 6886 | |
5e5c78be KH |
6887 | attrs = CODING_ID_ATTRS (coding->id); |
6888 | if (! NILP (CODING_ATTR_POST_READ (attrs))) | |
b73bfc1c | 6889 | { |
5e5c78be KH |
6890 | EMACS_INT prev_Z = Z, prev_Z_BYTE = Z_BYTE; |
6891 | Lisp_Object val; | |
6892 | ||
6893 | TEMP_SET_PT_BOTH (coding->dst_pos, coding->dst_pos_byte); | |
5e5c78be KH |
6894 | val = call1 (CODING_ATTR_POST_READ (attrs), |
6895 | make_number (coding->produced_char)); | |
5e5c78be KH |
6896 | CHECK_NATNUM (val); |
6897 | coding->produced_char += Z - prev_Z; | |
6898 | coding->produced += Z_BYTE - prev_Z_BYTE; | |
b73bfc1c | 6899 | } |
4ed46869 | 6900 | |
df7492f9 | 6901 | unbind_to (count, Qnil); |
b73bfc1c KH |
6902 | return coding->result; |
6903 | } | |
52d41803 | 6904 | |
4ed46869 | 6905 | int |
df7492f9 | 6906 | encode_coding_gap (coding, chars, bytes) |
4ed46869 | 6907 | struct coding_system *coding; |
df7492f9 | 6908 | EMACS_INT chars, bytes; |
4ed46869 | 6909 | { |
df7492f9 | 6910 | int count = specpdl_ptr - specpdl; |
4ed46869 | 6911 | |
24a73b0a | 6912 | code_conversion_save (0, 0); |
4ed46869 | 6913 | |
24a73b0a | 6914 | coding->src_object = Fcurrent_buffer (); |
df7492f9 KH |
6915 | coding->src_chars = chars; |
6916 | coding->src_bytes = bytes; | |
6917 | coding->src_pos = -chars; | |
6918 | coding->src_pos_byte = -bytes; | |
6919 | coding->src_multibyte = chars < bytes; | |
6920 | coding->dst_object = coding->src_object; | |
6921 | coding->dst_pos = PT; | |
6922 | coding->dst_pos_byte = PT_BYTE; | |
4ed46869 | 6923 | |
df7492f9 | 6924 | encode_coding (coding); |
b73bfc1c | 6925 | |
df7492f9 KH |
6926 | unbind_to (count, Qnil); |
6927 | return coding->result; | |
6928 | } | |
4ed46869 | 6929 | |
d46c5b12 | 6930 | |
df7492f9 KH |
6931 | /* Decode the text in the range FROM/FROM_BYTE and TO/TO_BYTE in |
6932 | SRC_OBJECT into DST_OBJECT by coding context CODING. | |
b73bfc1c | 6933 | |
df7492f9 | 6934 | SRC_OBJECT is a buffer, a string, or Qnil. |
b73bfc1c | 6935 | |
df7492f9 KH |
6936 | If it is a buffer, the text is at point of the buffer. FROM and TO |
6937 | are positions in the buffer. | |
b73bfc1c | 6938 | |
df7492f9 KH |
6939 | If it is a string, the text is at the beginning of the string. |
6940 | FROM and TO are indices to the string. | |
4ed46869 | 6941 | |
df7492f9 KH |
6942 | If it is nil, the text is at coding->source. FROM and TO are |
6943 | indices to coding->source. | |
bb10be8b | 6944 | |
df7492f9 | 6945 | DST_OBJECT is a buffer, Qt, or Qnil. |
4ed46869 | 6946 | |
df7492f9 KH |
6947 | If it is a buffer, the decoded text is inserted at point of the |
6948 | buffer. If the buffer is the same as SRC_OBJECT, the source text | |
6949 | is deleted. | |
4ed46869 | 6950 | |
df7492f9 KH |
6951 | If it is Qt, a string is made from the decoded text, and |
6952 | set in CODING->dst_object. | |
d46c5b12 | 6953 | |
df7492f9 | 6954 | If it is Qnil, the decoded text is stored at CODING->destination. |
2cb26057 | 6955 | The caller must allocate CODING->dst_bytes bytes at |
df7492f9 KH |
6956 | CODING->destination by xmalloc. If the decoded text is longer than |
6957 | CODING->dst_bytes, CODING->destination is relocated by xrealloc. | |
6958 | */ | |
d46c5b12 | 6959 | |
df7492f9 KH |
6960 | void |
6961 | decode_coding_object (coding, src_object, from, from_byte, to, to_byte, | |
6962 | dst_object) | |
d46c5b12 | 6963 | struct coding_system *coding; |
df7492f9 KH |
6964 | Lisp_Object src_object; |
6965 | EMACS_INT from, from_byte, to, to_byte; | |
6966 | Lisp_Object dst_object; | |
d46c5b12 | 6967 | { |
df7492f9 KH |
6968 | int count = specpdl_ptr - specpdl; |
6969 | unsigned char *destination; | |
6970 | EMACS_INT dst_bytes; | |
6971 | EMACS_INT chars = to - from; | |
6972 | EMACS_INT bytes = to_byte - from_byte; | |
6973 | Lisp_Object attrs; | |
4776e638 | 6974 | int saved_pt = -1, saved_pt_byte; |
64cedb0c | 6975 | int need_marker_adjustment = 0; |
b3bfad50 | 6976 | Lisp_Object old_deactivate_mark; |
d46c5b12 | 6977 | |
b3bfad50 | 6978 | old_deactivate_mark = Vdeactivate_mark; |
93dec019 | 6979 | |
df7492f9 | 6980 | if (NILP (dst_object)) |
d46c5b12 | 6981 | { |
df7492f9 KH |
6982 | destination = coding->destination; |
6983 | dst_bytes = coding->dst_bytes; | |
d46c5b12 | 6984 | } |
93dec019 | 6985 | |
df7492f9 KH |
6986 | coding->src_object = src_object; |
6987 | coding->src_chars = chars; | |
6988 | coding->src_bytes = bytes; | |
6989 | coding->src_multibyte = chars < bytes; | |
70ad9fc4 | 6990 | |
df7492f9 | 6991 | if (STRINGP (src_object)) |
d46c5b12 | 6992 | { |
df7492f9 KH |
6993 | coding->src_pos = from; |
6994 | coding->src_pos_byte = from_byte; | |
d46c5b12 | 6995 | } |
df7492f9 | 6996 | else if (BUFFERP (src_object)) |
88993dfd | 6997 | { |
df7492f9 KH |
6998 | set_buffer_internal (XBUFFER (src_object)); |
6999 | if (from != GPT) | |
7000 | move_gap_both (from, from_byte); | |
7001 | if (EQ (src_object, dst_object)) | |
fb88bf2d | 7002 | { |
64cedb0c KH |
7003 | struct Lisp_Marker *tail; |
7004 | ||
7005 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7006 | { | |
7007 | tail->need_adjustment | |
7008 | = tail->charpos == (tail->insertion_type ? from : to); | |
7009 | need_marker_adjustment |= tail->need_adjustment; | |
7010 | } | |
4776e638 | 7011 | saved_pt = PT, saved_pt_byte = PT_BYTE; |
df7492f9 | 7012 | TEMP_SET_PT_BOTH (from, from_byte); |
f4a3cc44 | 7013 | current_buffer->text->inhibit_shrinking = 1; |
df7492f9 KH |
7014 | del_range_both (from, from_byte, to, to_byte, 1); |
7015 | coding->src_pos = -chars; | |
7016 | coding->src_pos_byte = -bytes; | |
fb88bf2d | 7017 | } |
df7492f9 | 7018 | else |
fb88bf2d | 7019 | { |
df7492f9 KH |
7020 | coding->src_pos = from; |
7021 | coding->src_pos_byte = from_byte; | |
fb88bf2d | 7022 | } |
88993dfd KH |
7023 | } |
7024 | ||
df7492f9 KH |
7025 | if (CODING_REQUIRE_DETECTION (coding)) |
7026 | detect_coding (coding); | |
7027 | attrs = CODING_ID_ATTRS (coding->id); | |
d46c5b12 | 7028 | |
2cb26057 KH |
7029 | if (EQ (dst_object, Qt) |
7030 | || (! NILP (CODING_ATTR_POST_READ (attrs)) | |
7031 | && NILP (dst_object))) | |
b73bfc1c | 7032 | { |
a1567c45 SM |
7033 | coding->dst_multibyte = !CODING_FOR_UNIBYTE (coding); |
7034 | coding->dst_object = code_conversion_save (1, coding->dst_multibyte); | |
df7492f9 KH |
7035 | coding->dst_pos = BEG; |
7036 | coding->dst_pos_byte = BEG_BYTE; | |
b73bfc1c | 7037 | } |
df7492f9 | 7038 | else if (BUFFERP (dst_object)) |
d46c5b12 | 7039 | { |
24a73b0a | 7040 | code_conversion_save (0, 0); |
df7492f9 KH |
7041 | coding->dst_object = dst_object; |
7042 | coding->dst_pos = BUF_PT (XBUFFER (dst_object)); | |
7043 | coding->dst_pos_byte = BUF_PT_BYTE (XBUFFER (dst_object)); | |
7044 | coding->dst_multibyte | |
7045 | = ! NILP (XBUFFER (dst_object)->enable_multibyte_characters); | |
d46c5b12 KH |
7046 | } |
7047 | else | |
7048 | { | |
24a73b0a | 7049 | code_conversion_save (0, 0); |
df7492f9 | 7050 | coding->dst_object = Qnil; |
0154725e SM |
7051 | /* Most callers presume this will return a multibyte result, and they |
7052 | won't use `binary' or `raw-text' anyway, so let's not worry about | |
7053 | CODING_FOR_UNIBYTE. */ | |
7054 | coding->dst_multibyte = Qt; | |
d46c5b12 KH |
7055 | } |
7056 | ||
df7492f9 | 7057 | decode_coding (coding); |
fa46990e | 7058 | |
df7492f9 KH |
7059 | if (BUFFERP (coding->dst_object)) |
7060 | set_buffer_internal (XBUFFER (coding->dst_object)); | |
d46c5b12 | 7061 | |
df7492f9 | 7062 | if (! NILP (CODING_ATTR_POST_READ (attrs))) |
d46c5b12 | 7063 | { |
b3bfad50 | 7064 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
df7492f9 | 7065 | EMACS_INT prev_Z = Z, prev_Z_BYTE = Z_BYTE; |
2b4f9037 | 7066 | Lisp_Object val; |
d46c5b12 | 7067 | |
c0cc7f7f | 7068 | TEMP_SET_PT_BOTH (coding->dst_pos, coding->dst_pos_byte); |
b3bfad50 KH |
7069 | GCPRO5 (coding->src_object, coding->dst_object, src_object, dst_object, |
7070 | old_deactivate_mark); | |
d4850d67 KH |
7071 | val = safe_call1 (CODING_ATTR_POST_READ (attrs), |
7072 | make_number (coding->produced_char)); | |
df7492f9 KH |
7073 | UNGCPRO; |
7074 | CHECK_NATNUM (val); | |
7075 | coding->produced_char += Z - prev_Z; | |
7076 | coding->produced += Z_BYTE - prev_Z_BYTE; | |
d46c5b12 | 7077 | } |
de79a6a5 | 7078 | |
df7492f9 | 7079 | if (EQ (dst_object, Qt)) |
ec6d2bb8 | 7080 | { |
df7492f9 KH |
7081 | coding->dst_object = Fbuffer_string (); |
7082 | } | |
7083 | else if (NILP (dst_object) && BUFFERP (coding->dst_object)) | |
7084 | { | |
7085 | set_buffer_internal (XBUFFER (coding->dst_object)); | |
7086 | if (dst_bytes < coding->produced) | |
7087 | { | |
b3bfad50 | 7088 | destination = xrealloc (destination, coding->produced); |
df7492f9 KH |
7089 | if (! destination) |
7090 | { | |
065e3595 KH |
7091 | record_conversion_result (coding, |
7092 | CODING_RESULT_INSUFFICIENT_DST); | |
df7492f9 KH |
7093 | unbind_to (count, Qnil); |
7094 | return; | |
7095 | } | |
7096 | if (BEGV < GPT && GPT < BEGV + coding->produced_char) | |
7097 | move_gap_both (BEGV, BEGV_BYTE); | |
7098 | bcopy (BEGV_ADDR, destination, coding->produced); | |
7099 | coding->destination = destination; | |
d46c5b12 | 7100 | } |
ec6d2bb8 | 7101 | } |
b73bfc1c | 7102 | |
4776e638 KH |
7103 | if (saved_pt >= 0) |
7104 | { | |
7105 | /* This is the case of: | |
7106 | (BUFFERP (src_object) && EQ (src_object, dst_object)) | |
7107 | As we have moved PT while replacing the original buffer | |
7108 | contents, we must recover it now. */ | |
7109 | set_buffer_internal (XBUFFER (src_object)); | |
f4a3cc44 | 7110 | current_buffer->text->inhibit_shrinking = 0; |
4776e638 KH |
7111 | if (saved_pt < from) |
7112 | TEMP_SET_PT_BOTH (saved_pt, saved_pt_byte); | |
7113 | else if (saved_pt < from + chars) | |
7114 | TEMP_SET_PT_BOTH (from, from_byte); | |
7115 | else if (! NILP (current_buffer->enable_multibyte_characters)) | |
7116 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced_char - chars), | |
7117 | saved_pt_byte + (coding->produced - bytes)); | |
7118 | else | |
7119 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced - bytes), | |
7120 | saved_pt_byte + (coding->produced - bytes)); | |
64cedb0c KH |
7121 | |
7122 | if (need_marker_adjustment) | |
7123 | { | |
7124 | struct Lisp_Marker *tail; | |
7125 | ||
7126 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7127 | if (tail->need_adjustment) | |
7128 | { | |
7129 | tail->need_adjustment = 0; | |
7130 | if (tail->insertion_type) | |
7131 | { | |
7132 | tail->bytepos = from_byte; | |
7133 | tail->charpos = from; | |
7134 | } | |
7135 | else | |
7136 | { | |
7137 | tail->bytepos = from_byte + coding->produced; | |
7138 | tail->charpos | |
7139 | = (NILP (current_buffer->enable_multibyte_characters) | |
7140 | ? tail->bytepos : from + coding->produced_char); | |
7141 | } | |
7142 | } | |
7143 | } | |
d46c5b12 | 7144 | } |
4776e638 | 7145 | |
b3bfad50 | 7146 | Vdeactivate_mark = old_deactivate_mark; |
065e3595 | 7147 | unbind_to (count, coding->dst_object); |
d46c5b12 KH |
7148 | } |
7149 | ||
d46c5b12 | 7150 | |
df7492f9 KH |
7151 | void |
7152 | encode_coding_object (coding, src_object, from, from_byte, to, to_byte, | |
7153 | dst_object) | |
d46c5b12 | 7154 | struct coding_system *coding; |
df7492f9 KH |
7155 | Lisp_Object src_object; |
7156 | EMACS_INT from, from_byte, to, to_byte; | |
7157 | Lisp_Object dst_object; | |
d46c5b12 | 7158 | { |
b73bfc1c | 7159 | int count = specpdl_ptr - specpdl; |
df7492f9 KH |
7160 | EMACS_INT chars = to - from; |
7161 | EMACS_INT bytes = to_byte - from_byte; | |
7162 | Lisp_Object attrs; | |
4776e638 | 7163 | int saved_pt = -1, saved_pt_byte; |
64cedb0c | 7164 | int need_marker_adjustment = 0; |
c02d943b | 7165 | int kill_src_buffer = 0; |
b3bfad50 | 7166 | Lisp_Object old_deactivate_mark; |
df7492f9 | 7167 | |
b3bfad50 | 7168 | old_deactivate_mark = Vdeactivate_mark; |
df7492f9 KH |
7169 | |
7170 | coding->src_object = src_object; | |
7171 | coding->src_chars = chars; | |
7172 | coding->src_bytes = bytes; | |
7173 | coding->src_multibyte = chars < bytes; | |
7174 | ||
7175 | attrs = CODING_ID_ATTRS (coding->id); | |
7176 | ||
64cedb0c KH |
7177 | if (EQ (src_object, dst_object)) |
7178 | { | |
7179 | struct Lisp_Marker *tail; | |
7180 | ||
7181 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7182 | { | |
7183 | tail->need_adjustment | |
7184 | = tail->charpos == (tail->insertion_type ? from : to); | |
7185 | need_marker_adjustment |= tail->need_adjustment; | |
7186 | } | |
7187 | } | |
7188 | ||
df7492f9 | 7189 | if (! NILP (CODING_ATTR_PRE_WRITE (attrs))) |
6bac5b12 | 7190 | { |
24a73b0a | 7191 | coding->src_object = code_conversion_save (1, coding->src_multibyte); |
df7492f9 KH |
7192 | set_buffer_internal (XBUFFER (coding->src_object)); |
7193 | if (STRINGP (src_object)) | |
7194 | insert_from_string (src_object, from, from_byte, chars, bytes, 0); | |
7195 | else if (BUFFERP (src_object)) | |
7196 | insert_from_buffer (XBUFFER (src_object), from, chars, 0); | |
7197 | else | |
7198 | insert_1_both (coding->source + from, chars, bytes, 0, 0, 0); | |
d46c5b12 | 7199 | |
df7492f9 KH |
7200 | if (EQ (src_object, dst_object)) |
7201 | { | |
7202 | set_buffer_internal (XBUFFER (src_object)); | |
4776e638 | 7203 | saved_pt = PT, saved_pt_byte = PT_BYTE; |
df7492f9 KH |
7204 | del_range_both (from, from_byte, to, to_byte, 1); |
7205 | set_buffer_internal (XBUFFER (coding->src_object)); | |
7206 | } | |
7207 | ||
d4850d67 KH |
7208 | { |
7209 | Lisp_Object args[3]; | |
b3bfad50 | 7210 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
d4850d67 | 7211 | |
b3bfad50 KH |
7212 | GCPRO5 (coding->src_object, coding->dst_object, src_object, dst_object, |
7213 | old_deactivate_mark); | |
d4850d67 KH |
7214 | args[0] = CODING_ATTR_PRE_WRITE (attrs); |
7215 | args[1] = make_number (BEG); | |
7216 | args[2] = make_number (Z); | |
7217 | safe_call (3, args); | |
b3bfad50 | 7218 | UNGCPRO; |
d4850d67 | 7219 | } |
c02d943b KH |
7220 | if (XBUFFER (coding->src_object) != current_buffer) |
7221 | kill_src_buffer = 1; | |
ac87bbef | 7222 | coding->src_object = Fcurrent_buffer (); |
df7492f9 KH |
7223 | if (BEG != GPT) |
7224 | move_gap_both (BEG, BEG_BYTE); | |
7225 | coding->src_chars = Z - BEG; | |
7226 | coding->src_bytes = Z_BYTE - BEG_BYTE; | |
7227 | coding->src_pos = BEG; | |
7228 | coding->src_pos_byte = BEG_BYTE; | |
7229 | coding->src_multibyte = Z < Z_BYTE; | |
7230 | } | |
7231 | else if (STRINGP (src_object)) | |
d46c5b12 | 7232 | { |
24a73b0a | 7233 | code_conversion_save (0, 0); |
df7492f9 KH |
7234 | coding->src_pos = from; |
7235 | coding->src_pos_byte = from_byte; | |
b73bfc1c | 7236 | } |
df7492f9 | 7237 | else if (BUFFERP (src_object)) |
b73bfc1c | 7238 | { |
24a73b0a | 7239 | code_conversion_save (0, 0); |
df7492f9 | 7240 | set_buffer_internal (XBUFFER (src_object)); |
df7492f9 | 7241 | if (EQ (src_object, dst_object)) |
d46c5b12 | 7242 | { |
4776e638 | 7243 | saved_pt = PT, saved_pt_byte = PT_BYTE; |
ff0dacd7 KH |
7244 | coding->src_object = del_range_1 (from, to, 1, 1); |
7245 | coding->src_pos = 0; | |
7246 | coding->src_pos_byte = 0; | |
d46c5b12 | 7247 | } |
df7492f9 | 7248 | else |
d46c5b12 | 7249 | { |
ff0dacd7 KH |
7250 | if (from < GPT && to >= GPT) |
7251 | move_gap_both (from, from_byte); | |
df7492f9 KH |
7252 | coding->src_pos = from; |
7253 | coding->src_pos_byte = from_byte; | |
d46c5b12 | 7254 | } |
d46c5b12 | 7255 | } |
4776e638 | 7256 | else |
24a73b0a | 7257 | code_conversion_save (0, 0); |
d46c5b12 | 7258 | |
df7492f9 | 7259 | if (BUFFERP (dst_object)) |
88993dfd | 7260 | { |
df7492f9 | 7261 | coding->dst_object = dst_object; |
28f67a95 KH |
7262 | if (EQ (src_object, dst_object)) |
7263 | { | |
7264 | coding->dst_pos = from; | |
7265 | coding->dst_pos_byte = from_byte; | |
7266 | } | |
7267 | else | |
7268 | { | |
7269 | coding->dst_pos = BUF_PT (XBUFFER (dst_object)); | |
7270 | coding->dst_pos_byte = BUF_PT_BYTE (XBUFFER (dst_object)); | |
7271 | } | |
df7492f9 KH |
7272 | coding->dst_multibyte |
7273 | = ! NILP (XBUFFER (dst_object)->enable_multibyte_characters); | |
88993dfd | 7274 | } |
df7492f9 | 7275 | else if (EQ (dst_object, Qt)) |
d46c5b12 | 7276 | { |
df7492f9 | 7277 | coding->dst_object = Qnil; |
df7492f9 | 7278 | coding->dst_bytes = coding->src_chars; |
ac87bbef KH |
7279 | if (coding->dst_bytes == 0) |
7280 | coding->dst_bytes = 1; | |
7281 | coding->destination = (unsigned char *) xmalloc (coding->dst_bytes); | |
df7492f9 | 7282 | coding->dst_multibyte = 0; |
d46c5b12 KH |
7283 | } |
7284 | else | |
7285 | { | |
df7492f9 KH |
7286 | coding->dst_object = Qnil; |
7287 | coding->dst_multibyte = 0; | |
d46c5b12 KH |
7288 | } |
7289 | ||
df7492f9 | 7290 | encode_coding (coding); |
d46c5b12 | 7291 | |
df7492f9 | 7292 | if (EQ (dst_object, Qt)) |
d46c5b12 | 7293 | { |
df7492f9 KH |
7294 | if (BUFFERP (coding->dst_object)) |
7295 | coding->dst_object = Fbuffer_string (); | |
7296 | else | |
d46c5b12 | 7297 | { |
df7492f9 KH |
7298 | coding->dst_object |
7299 | = make_unibyte_string ((char *) coding->destination, | |
7300 | coding->produced); | |
7301 | xfree (coding->destination); | |
d46c5b12 | 7302 | } |
4ed46869 | 7303 | } |
d46c5b12 | 7304 | |
4776e638 KH |
7305 | if (saved_pt >= 0) |
7306 | { | |
7307 | /* This is the case of: | |
7308 | (BUFFERP (src_object) && EQ (src_object, dst_object)) | |
7309 | As we have moved PT while replacing the original buffer | |
7310 | contents, we must recover it now. */ | |
7311 | set_buffer_internal (XBUFFER (src_object)); | |
7312 | if (saved_pt < from) | |
7313 | TEMP_SET_PT_BOTH (saved_pt, saved_pt_byte); | |
7314 | else if (saved_pt < from + chars) | |
7315 | TEMP_SET_PT_BOTH (from, from_byte); | |
7316 | else if (! NILP (current_buffer->enable_multibyte_characters)) | |
7317 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced_char - chars), | |
7318 | saved_pt_byte + (coding->produced - bytes)); | |
d46c5b12 | 7319 | else |
4776e638 KH |
7320 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced - bytes), |
7321 | saved_pt_byte + (coding->produced - bytes)); | |
64cedb0c KH |
7322 | |
7323 | if (need_marker_adjustment) | |
7324 | { | |
7325 | struct Lisp_Marker *tail; | |
7326 | ||
7327 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7328 | if (tail->need_adjustment) | |
7329 | { | |
7330 | tail->need_adjustment = 0; | |
7331 | if (tail->insertion_type) | |
7332 | { | |
7333 | tail->bytepos = from_byte; | |
7334 | tail->charpos = from; | |
7335 | } | |
7336 | else | |
7337 | { | |
7338 | tail->bytepos = from_byte + coding->produced; | |
7339 | tail->charpos | |
7340 | = (NILP (current_buffer->enable_multibyte_characters) | |
7341 | ? tail->bytepos : from + coding->produced_char); | |
7342 | } | |
7343 | } | |
7344 | } | |
4776e638 KH |
7345 | } |
7346 | ||
c02d943b KH |
7347 | if (kill_src_buffer) |
7348 | Fkill_buffer (coding->src_object); | |
b3bfad50 KH |
7349 | |
7350 | Vdeactivate_mark = old_deactivate_mark; | |
df7492f9 | 7351 | unbind_to (count, Qnil); |
b73bfc1c KH |
7352 | } |
7353 | ||
df7492f9 | 7354 | |
b73bfc1c | 7355 | Lisp_Object |
df7492f9 | 7356 | preferred_coding_system () |
b73bfc1c | 7357 | { |
df7492f9 | 7358 | int id = coding_categories[coding_priorities[0]].id; |
2391eaa4 | 7359 | |
df7492f9 | 7360 | return CODING_ID_NAME (id); |
4ed46869 KH |
7361 | } |
7362 | ||
7363 | \f | |
7364 | #ifdef emacs | |
1397dc18 | 7365 | /*** 8. Emacs Lisp library functions ***/ |
4ed46869 | 7366 | |
4ed46869 | 7367 | DEFUN ("coding-system-p", Fcoding_system_p, Scoding_system_p, 1, 1, 0, |
48b0f3ae | 7368 | doc: /* Return t if OBJECT is nil or a coding-system. |
df7492f9 | 7369 | See the documentation of `define-coding-system' for information |
48b0f3ae PJ |
7370 | about coding-system objects. */) |
7371 | (obj) | |
4ed46869 KH |
7372 | Lisp_Object obj; |
7373 | { | |
44e8490d KH |
7374 | if (NILP (obj) |
7375 | || CODING_SYSTEM_ID (obj) >= 0) | |
7376 | return Qt; | |
7377 | if (! SYMBOLP (obj) | |
7378 | || NILP (Fget (obj, Qcoding_system_define_form))) | |
7379 | return Qnil; | |
7380 | return Qt; | |
4ed46869 KH |
7381 | } |
7382 | ||
9d991de8 RS |
7383 | DEFUN ("read-non-nil-coding-system", Fread_non_nil_coding_system, |
7384 | Sread_non_nil_coding_system, 1, 1, 0, | |
48b0f3ae PJ |
7385 | doc: /* Read a coding system from the minibuffer, prompting with string PROMPT. */) |
7386 | (prompt) | |
4ed46869 KH |
7387 | Lisp_Object prompt; |
7388 | { | |
e0e989f6 | 7389 | Lisp_Object val; |
9d991de8 RS |
7390 | do |
7391 | { | |
4608c386 KH |
7392 | val = Fcompleting_read (prompt, Vcoding_system_alist, Qnil, |
7393 | Qt, Qnil, Qcoding_system_history, Qnil, Qnil); | |
9d991de8 | 7394 | } |
8f924df7 | 7395 | while (SCHARS (val) == 0); |
e0e989f6 | 7396 | return (Fintern (val, Qnil)); |
4ed46869 KH |
7397 | } |
7398 | ||
9b787f3e | 7399 | DEFUN ("read-coding-system", Fread_coding_system, Sread_coding_system, 1, 2, 0, |
48b0f3ae | 7400 | doc: /* Read a coding system from the minibuffer, prompting with string PROMPT. |
c7183fb8 GM |
7401 | If the user enters null input, return second argument DEFAULT-CODING-SYSTEM. |
7402 | Ignores case when completing coding systems (all Emacs coding systems | |
7403 | are lower-case). */) | |
48b0f3ae | 7404 | (prompt, default_coding_system) |
9b787f3e | 7405 | Lisp_Object prompt, default_coding_system; |
4ed46869 | 7406 | { |
f44d27ce | 7407 | Lisp_Object val; |
c7183fb8 GM |
7408 | int count = SPECPDL_INDEX (); |
7409 | ||
9b787f3e | 7410 | if (SYMBOLP (default_coding_system)) |
57d25e6f | 7411 | default_coding_system = SYMBOL_NAME (default_coding_system); |
c7183fb8 | 7412 | specbind (Qcompletion_ignore_case, Qt); |
4608c386 | 7413 | val = Fcompleting_read (prompt, Vcoding_system_alist, Qnil, |
9b787f3e RS |
7414 | Qt, Qnil, Qcoding_system_history, |
7415 | default_coding_system, Qnil); | |
c7183fb8 | 7416 | unbind_to (count, Qnil); |
8f924df7 | 7417 | return (SCHARS (val) == 0 ? Qnil : Fintern (val, Qnil)); |
4ed46869 KH |
7418 | } |
7419 | ||
7420 | DEFUN ("check-coding-system", Fcheck_coding_system, Scheck_coding_system, | |
7421 | 1, 1, 0, | |
48b0f3ae | 7422 | doc: /* Check validity of CODING-SYSTEM. |
9ffd559c KH |
7423 | If valid, return CODING-SYSTEM, else signal a `coding-system-error' error. |
7424 | It is valid if it is nil or a symbol defined as a coding system by the | |
7425 | function `define-coding-system'. */) | |
df7492f9 | 7426 | (coding_system) |
4ed46869 KH |
7427 | Lisp_Object coding_system; |
7428 | { | |
44e8490d KH |
7429 | Lisp_Object define_form; |
7430 | ||
7431 | define_form = Fget (coding_system, Qcoding_system_define_form); | |
7432 | if (! NILP (define_form)) | |
7433 | { | |
7434 | Fput (coding_system, Qcoding_system_define_form, Qnil); | |
7435 | safe_eval (define_form); | |
7436 | } | |
4ed46869 KH |
7437 | if (!NILP (Fcoding_system_p (coding_system))) |
7438 | return coding_system; | |
fcad4ec4 | 7439 | xsignal1 (Qcoding_system_error, coding_system); |
4ed46869 | 7440 | } |
df7492f9 | 7441 | |
3a73fa5d | 7442 | \f |
89528eb3 KH |
7443 | /* Detect how the bytes at SRC of length SRC_BYTES are encoded. If |
7444 | HIGHEST is nonzero, return the coding system of the highest | |
7445 | priority among the detected coding systems. Otherwize return a | |
7446 | list of detected coding systems sorted by their priorities. If | |
7447 | MULTIBYTEP is nonzero, it is assumed that the bytes are in correct | |
7448 | multibyte form but contains only ASCII and eight-bit chars. | |
7449 | Otherwise, the bytes are raw bytes. | |
7450 | ||
7451 | CODING-SYSTEM controls the detection as below: | |
7452 | ||
7453 | If it is nil, detect both text-format and eol-format. If the | |
7454 | text-format part of CODING-SYSTEM is already specified | |
7455 | (e.g. `iso-latin-1'), detect only eol-format. If the eol-format | |
7456 | part of CODING-SYSTEM is already specified (e.g. `undecided-unix'), | |
7457 | detect only text-format. */ | |
7458 | ||
d46c5b12 | 7459 | Lisp_Object |
24a73b0a KH |
7460 | detect_coding_system (src, src_chars, src_bytes, highest, multibytep, |
7461 | coding_system) | |
8f924df7 | 7462 | const unsigned char *src; |
13818c30 SM |
7463 | EMACS_INT src_chars, src_bytes; |
7464 | int highest; | |
0a28aafb | 7465 | int multibytep; |
df7492f9 | 7466 | Lisp_Object coding_system; |
4ed46869 | 7467 | { |
8f924df7 | 7468 | const unsigned char *src_end = src + src_bytes; |
df7492f9 KH |
7469 | Lisp_Object attrs, eol_type; |
7470 | Lisp_Object val; | |
7471 | struct coding_system coding; | |
89528eb3 | 7472 | int id; |
ff0dacd7 | 7473 | struct coding_detection_info detect_info; |
24a73b0a | 7474 | enum coding_category base_category; |
b73bfc1c | 7475 | |
df7492f9 KH |
7476 | if (NILP (coding_system)) |
7477 | coding_system = Qundecided; | |
7478 | setup_coding_system (coding_system, &coding); | |
7479 | attrs = CODING_ID_ATTRS (coding.id); | |
7480 | eol_type = CODING_ID_EOL_TYPE (coding.id); | |
89528eb3 | 7481 | coding_system = CODING_ATTR_BASE_NAME (attrs); |
4ed46869 | 7482 | |
df7492f9 | 7483 | coding.source = src; |
24a73b0a | 7484 | coding.src_chars = src_chars; |
df7492f9 KH |
7485 | coding.src_bytes = src_bytes; |
7486 | coding.src_multibyte = multibytep; | |
7487 | coding.consumed = 0; | |
89528eb3 | 7488 | coding.mode |= CODING_MODE_LAST_BLOCK; |
d46c5b12 | 7489 | |
ff0dacd7 | 7490 | detect_info.checked = detect_info.found = detect_info.rejected = 0; |
d46c5b12 | 7491 | |
89528eb3 | 7492 | /* At first, detect text-format if necessary. */ |
24a73b0a KH |
7493 | base_category = XINT (CODING_ATTR_CATEGORY (attrs)); |
7494 | if (base_category == coding_category_undecided) | |
4ed46869 | 7495 | { |
ff0dacd7 KH |
7496 | enum coding_category category; |
7497 | struct coding_system *this; | |
7498 | int c, i; | |
88993dfd | 7499 | |
24a73b0a KH |
7500 | /* Skip all ASCII bytes except for a few ISO2022 controls. */ |
7501 | for (i = 0; src < src_end; i++, src++) | |
4ed46869 | 7502 | { |
df7492f9 | 7503 | c = *src; |
6cb21a4f | 7504 | if (c & 0x80) |
d46c5b12 | 7505 | break; |
6cb21a4f KH |
7506 | if (c < 0x20 |
7507 | && (c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO) | |
c7266f4a | 7508 | && ! inhibit_iso_escape_detection) |
6cb21a4f KH |
7509 | { |
7510 | coding.head_ascii = src - coding.source; | |
7511 | if (detect_coding_iso_2022 (&coding, &detect_info)) | |
7512 | { | |
7513 | /* We have scanned the whole data. */ | |
7514 | if (! (detect_info.rejected & CATEGORY_MASK_ISO_7_ELSE)) | |
7515 | /* We didn't find an 8-bit code. */ | |
7516 | src = src_end; | |
7517 | break; | |
7518 | } | |
7519 | } | |
4ed46869 | 7520 | } |
df7492f9 | 7521 | coding.head_ascii = src - coding.source; |
88993dfd | 7522 | |
6cb21a4f KH |
7523 | if (src < src_end |
7524 | || detect_info.found) | |
7525 | { | |
7526 | if (src == src_end) | |
7527 | /* As all bytes are 7-bit, we can ignore non-ISO-2022 codings. */ | |
7528 | for (i = 0; i < coding_category_raw_text; i++) | |
ff0dacd7 | 7529 | { |
6cb21a4f | 7530 | category = coding_priorities[i]; |
c7266f4a | 7531 | this = coding_categories + category; |
6cb21a4f | 7532 | if (detect_info.found & (1 << category)) |
ff0dacd7 KH |
7533 | break; |
7534 | } | |
6cb21a4f KH |
7535 | else |
7536 | for (i = 0; i < coding_category_raw_text; i++) | |
df7492f9 | 7537 | { |
6cb21a4f KH |
7538 | category = coding_priorities[i]; |
7539 | this = coding_categories + category; | |
7540 | ||
7541 | if (this->id < 0) | |
24a73b0a | 7542 | { |
6cb21a4f KH |
7543 | /* No coding system of this category is defined. */ |
7544 | detect_info.rejected |= (1 << category); | |
7545 | } | |
7546 | else if (category >= coding_category_raw_text) | |
7547 | continue; | |
7548 | else if (detect_info.checked & (1 << category)) | |
7549 | { | |
7550 | if (highest | |
7551 | && (detect_info.found & (1 << category))) | |
7552 | break; | |
7553 | } | |
7554 | else | |
7555 | { | |
7556 | if ((*(this->detector)) (&coding, &detect_info) | |
7557 | && highest | |
7558 | && (detect_info.found & (1 << category))) | |
24a73b0a | 7559 | { |
6cb21a4f KH |
7560 | if (category == coding_category_utf_16_auto) |
7561 | { | |
7562 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
7563 | category = coding_category_utf_16_le; | |
7564 | else | |
7565 | category = coding_category_utf_16_be; | |
7566 | } | |
7567 | break; | |
24a73b0a | 7568 | } |
24a73b0a | 7569 | } |
df7492f9 | 7570 | } |
6cb21a4f | 7571 | } |
ec6d2bb8 | 7572 | |
ff0dacd7 | 7573 | if (detect_info.rejected == CATEGORY_MASK_ANY) |
ec6d2bb8 | 7574 | { |
ff0dacd7 | 7575 | detect_info.found = CATEGORY_MASK_RAW_TEXT; |
89528eb3 KH |
7576 | id = coding_categories[coding_category_raw_text].id; |
7577 | val = Fcons (make_number (id), Qnil); | |
7578 | } | |
ff0dacd7 | 7579 | else if (! detect_info.rejected && ! detect_info.found) |
89528eb3 | 7580 | { |
ff0dacd7 | 7581 | detect_info.found = CATEGORY_MASK_ANY; |
89528eb3 KH |
7582 | id = coding_categories[coding_category_undecided].id; |
7583 | val = Fcons (make_number (id), Qnil); | |
7584 | } | |
7585 | else if (highest) | |
7586 | { | |
ff0dacd7 | 7587 | if (detect_info.found) |
ec6d2bb8 | 7588 | { |
ff0dacd7 KH |
7589 | detect_info.found = 1 << category; |
7590 | val = Fcons (make_number (this->id), Qnil); | |
7591 | } | |
7592 | else | |
7593 | for (i = 0; i < coding_category_raw_text; i++) | |
7594 | if (! (detect_info.rejected & (1 << coding_priorities[i]))) | |
7595 | { | |
7596 | detect_info.found = 1 << coding_priorities[i]; | |
7597 | id = coding_categories[coding_priorities[i]].id; | |
7598 | val = Fcons (make_number (id), Qnil); | |
7599 | break; | |
7600 | } | |
7601 | } | |
89528eb3 KH |
7602 | else |
7603 | { | |
ff0dacd7 KH |
7604 | int mask = detect_info.rejected | detect_info.found; |
7605 | int found = 0; | |
89528eb3 | 7606 | val = Qnil; |
ec6d2bb8 | 7607 | |
89528eb3 | 7608 | for (i = coding_category_raw_text - 1; i >= 0; i--) |
ff0dacd7 KH |
7609 | { |
7610 | category = coding_priorities[i]; | |
7611 | if (! (mask & (1 << category))) | |
ec6d2bb8 | 7612 | { |
ff0dacd7 KH |
7613 | found |= 1 << category; |
7614 | id = coding_categories[category].id; | |
c7266f4a KH |
7615 | if (id >= 0) |
7616 | val = Fcons (make_number (id), val); | |
ff0dacd7 KH |
7617 | } |
7618 | } | |
7619 | for (i = coding_category_raw_text - 1; i >= 0; i--) | |
7620 | { | |
7621 | category = coding_priorities[i]; | |
7622 | if (detect_info.found & (1 << category)) | |
7623 | { | |
7624 | id = coding_categories[category].id; | |
7625 | val = Fcons (make_number (id), val); | |
ec6d2bb8 | 7626 | } |
ec6d2bb8 | 7627 | } |
ff0dacd7 | 7628 | detect_info.found |= found; |
ec6d2bb8 | 7629 | } |
ec6d2bb8 | 7630 | } |
24a73b0a KH |
7631 | else if (base_category == coding_category_utf_16_auto) |
7632 | { | |
7633 | if (detect_coding_utf_16 (&coding, &detect_info)) | |
7634 | { | |
24a73b0a KH |
7635 | struct coding_system *this; |
7636 | ||
7637 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
7638 | this = coding_categories + coding_category_utf_16_le; | |
7639 | else if (detect_info.found & CATEGORY_MASK_UTF_16_BE) | |
7640 | this = coding_categories + coding_category_utf_16_be; | |
7641 | else if (detect_info.rejected & CATEGORY_MASK_UTF_16_LE_NOSIG) | |
7642 | this = coding_categories + coding_category_utf_16_be_nosig; | |
7643 | else | |
7644 | this = coding_categories + coding_category_utf_16_le_nosig; | |
7645 | val = Fcons (make_number (this->id), Qnil); | |
7646 | } | |
7647 | } | |
df7492f9 KH |
7648 | else |
7649 | { | |
ff0dacd7 | 7650 | detect_info.found = 1 << XINT (CODING_ATTR_CATEGORY (attrs)); |
89528eb3 | 7651 | val = Fcons (make_number (coding.id), Qnil); |
4ed46869 | 7652 | } |
df7492f9 | 7653 | |
89528eb3 | 7654 | /* Then, detect eol-format if necessary. */ |
df7492f9 | 7655 | { |
89528eb3 | 7656 | int normal_eol = -1, utf_16_be_eol = -1, utf_16_le_eol; |
df7492f9 KH |
7657 | Lisp_Object tail; |
7658 | ||
89528eb3 KH |
7659 | if (VECTORP (eol_type)) |
7660 | { | |
ff0dacd7 | 7661 | if (detect_info.found & ~CATEGORY_MASK_UTF_16) |
89528eb3 KH |
7662 | normal_eol = detect_eol (coding.source, src_bytes, |
7663 | coding_category_raw_text); | |
ff0dacd7 KH |
7664 | if (detect_info.found & (CATEGORY_MASK_UTF_16_BE |
7665 | | CATEGORY_MASK_UTF_16_BE_NOSIG)) | |
89528eb3 KH |
7666 | utf_16_be_eol = detect_eol (coding.source, src_bytes, |
7667 | coding_category_utf_16_be); | |
ff0dacd7 KH |
7668 | if (detect_info.found & (CATEGORY_MASK_UTF_16_LE |
7669 | | CATEGORY_MASK_UTF_16_LE_NOSIG)) | |
89528eb3 KH |
7670 | utf_16_le_eol = detect_eol (coding.source, src_bytes, |
7671 | coding_category_utf_16_le); | |
7672 | } | |
7673 | else | |
7674 | { | |
7675 | if (EQ (eol_type, Qunix)) | |
7676 | normal_eol = utf_16_be_eol = utf_16_le_eol = EOL_SEEN_LF; | |
7677 | else if (EQ (eol_type, Qdos)) | |
7678 | normal_eol = utf_16_be_eol = utf_16_le_eol = EOL_SEEN_CRLF; | |
7679 | else | |
7680 | normal_eol = utf_16_be_eol = utf_16_le_eol = EOL_SEEN_CR; | |
7681 | } | |
7682 | ||
df7492f9 KH |
7683 | for (tail = val; CONSP (tail); tail = XCDR (tail)) |
7684 | { | |
89528eb3 | 7685 | enum coding_category category; |
df7492f9 | 7686 | int this_eol; |
89528eb3 KH |
7687 | |
7688 | id = XINT (XCAR (tail)); | |
7689 | attrs = CODING_ID_ATTRS (id); | |
7690 | category = XINT (CODING_ATTR_CATEGORY (attrs)); | |
7691 | eol_type = CODING_ID_EOL_TYPE (id); | |
df7492f9 KH |
7692 | if (VECTORP (eol_type)) |
7693 | { | |
89528eb3 KH |
7694 | if (category == coding_category_utf_16_be |
7695 | || category == coding_category_utf_16_be_nosig) | |
7696 | this_eol = utf_16_be_eol; | |
7697 | else if (category == coding_category_utf_16_le | |
7698 | || category == coding_category_utf_16_le_nosig) | |
7699 | this_eol = utf_16_le_eol; | |
df7492f9 | 7700 | else |
89528eb3 KH |
7701 | this_eol = normal_eol; |
7702 | ||
df7492f9 KH |
7703 | if (this_eol == EOL_SEEN_LF) |
7704 | XSETCAR (tail, AREF (eol_type, 0)); | |
7705 | else if (this_eol == EOL_SEEN_CRLF) | |
7706 | XSETCAR (tail, AREF (eol_type, 1)); | |
7707 | else if (this_eol == EOL_SEEN_CR) | |
7708 | XSETCAR (tail, AREF (eol_type, 2)); | |
89528eb3 KH |
7709 | else |
7710 | XSETCAR (tail, CODING_ID_NAME (id)); | |
df7492f9 | 7711 | } |
89528eb3 KH |
7712 | else |
7713 | XSETCAR (tail, CODING_ID_NAME (id)); | |
df7492f9 KH |
7714 | } |
7715 | } | |
ec6d2bb8 | 7716 | |
03699b14 | 7717 | return (highest ? XCAR (val) : val); |
ec6d2bb8 KH |
7718 | } |
7719 | ||
ec6d2bb8 | 7720 | |
d46c5b12 KH |
7721 | DEFUN ("detect-coding-region", Fdetect_coding_region, Sdetect_coding_region, |
7722 | 2, 3, 0, | |
48b0f3ae PJ |
7723 | doc: /* Detect coding system of the text in the region between START and END. |
7724 | Return a list of possible coding systems ordered by priority. | |
ec6d2bb8 | 7725 | |
12e0131a KH |
7726 | If only ASCII characters are found (except for such ISO-2022 control |
7727 | characters ISO-2022 as ESC), it returns a list of single element | |
48b0f3ae PJ |
7728 | `undecided' or its subsidiary coding system according to a detected |
7729 | end-of-line format. | |
ec6d2bb8 | 7730 | |
48b0f3ae PJ |
7731 | If optional argument HIGHEST is non-nil, return the coding system of |
7732 | highest priority. */) | |
7733 | (start, end, highest) | |
d46c5b12 KH |
7734 | Lisp_Object start, end, highest; |
7735 | { | |
7736 | int from, to; | |
7737 | int from_byte, to_byte; | |
ec6d2bb8 | 7738 | |
b7826503 PJ |
7739 | CHECK_NUMBER_COERCE_MARKER (start); |
7740 | CHECK_NUMBER_COERCE_MARKER (end); | |
ec6d2bb8 | 7741 | |
d46c5b12 KH |
7742 | validate_region (&start, &end); |
7743 | from = XINT (start), to = XINT (end); | |
7744 | from_byte = CHAR_TO_BYTE (from); | |
7745 | to_byte = CHAR_TO_BYTE (to); | |
ec6d2bb8 | 7746 | |
d46c5b12 KH |
7747 | if (from < GPT && to >= GPT) |
7748 | move_gap_both (to, to_byte); | |
c210f766 | 7749 | |
d46c5b12 | 7750 | return detect_coding_system (BYTE_POS_ADDR (from_byte), |
24a73b0a | 7751 | to - from, to_byte - from_byte, |
0a28aafb KH |
7752 | !NILP (highest), |
7753 | !NILP (current_buffer | |
df7492f9 KH |
7754 | ->enable_multibyte_characters), |
7755 | Qnil); | |
ec6d2bb8 KH |
7756 | } |
7757 | ||
d46c5b12 KH |
7758 | DEFUN ("detect-coding-string", Fdetect_coding_string, Sdetect_coding_string, |
7759 | 1, 2, 0, | |
48b0f3ae PJ |
7760 | doc: /* Detect coding system of the text in STRING. |
7761 | Return a list of possible coding systems ordered by priority. | |
fb88bf2d | 7762 | |
12e0131a KH |
7763 | If only ASCII characters are found (except for such ISO-2022 control |
7764 | characters ISO-2022 as ESC), it returns a list of single element | |
48b0f3ae PJ |
7765 | `undecided' or its subsidiary coding system according to a detected |
7766 | end-of-line format. | |
d46c5b12 | 7767 | |
48b0f3ae PJ |
7768 | If optional argument HIGHEST is non-nil, return the coding system of |
7769 | highest priority. */) | |
7770 | (string, highest) | |
d46c5b12 KH |
7771 | Lisp_Object string, highest; |
7772 | { | |
b7826503 | 7773 | CHECK_STRING (string); |
b73bfc1c | 7774 | |
24a73b0a KH |
7775 | return detect_coding_system (SDATA (string), |
7776 | SCHARS (string), SBYTES (string), | |
8f924df7 | 7777 | !NILP (highest), STRING_MULTIBYTE (string), |
df7492f9 | 7778 | Qnil); |
4ed46869 | 7779 | } |
4ed46869 | 7780 | |
b73bfc1c | 7781 | |
df7492f9 KH |
7782 | static INLINE int |
7783 | char_encodable_p (c, attrs) | |
7784 | int c; | |
7785 | Lisp_Object attrs; | |
05e6f5dc | 7786 | { |
df7492f9 | 7787 | Lisp_Object tail; |
df7492f9 | 7788 | struct charset *charset; |
7d64c6ad | 7789 | Lisp_Object translation_table; |
d46c5b12 | 7790 | |
7d64c6ad | 7791 | translation_table = CODING_ATTR_TRANS_TBL (attrs); |
a6f87d34 | 7792 | if (! NILP (translation_table)) |
7d64c6ad | 7793 | c = translate_char (translation_table, c); |
df7492f9 KH |
7794 | for (tail = CODING_ATTR_CHARSET_LIST (attrs); |
7795 | CONSP (tail); tail = XCDR (tail)) | |
e133c8fa | 7796 | { |
df7492f9 KH |
7797 | charset = CHARSET_FROM_ID (XINT (XCAR (tail))); |
7798 | if (CHAR_CHARSET_P (c, charset)) | |
7799 | break; | |
e133c8fa | 7800 | } |
df7492f9 | 7801 | return (! NILP (tail)); |
05e6f5dc | 7802 | } |
83fa074f | 7803 | |
fb88bf2d | 7804 | |
df7492f9 KH |
7805 | /* Return a list of coding systems that safely encode the text between |
7806 | START and END. If EXCLUDE is non-nil, it is a list of coding | |
7807 | systems not to check. The returned list doesn't contain any such | |
48468dac | 7808 | coding systems. In any case, if the text contains only ASCII or is |
df7492f9 | 7809 | unibyte, return t. */ |
e077cc80 | 7810 | |
df7492f9 KH |
7811 | DEFUN ("find-coding-systems-region-internal", |
7812 | Ffind_coding_systems_region_internal, | |
7813 | Sfind_coding_systems_region_internal, 2, 3, 0, | |
7814 | doc: /* Internal use only. */) | |
7815 | (start, end, exclude) | |
7816 | Lisp_Object start, end, exclude; | |
7817 | { | |
7818 | Lisp_Object coding_attrs_list, safe_codings; | |
7819 | EMACS_INT start_byte, end_byte; | |
7c78e542 | 7820 | const unsigned char *p, *pbeg, *pend; |
df7492f9 KH |
7821 | int c; |
7822 | Lisp_Object tail, elt; | |
d46c5b12 | 7823 | |
df7492f9 KH |
7824 | if (STRINGP (start)) |
7825 | { | |
7826 | if (!STRING_MULTIBYTE (start) | |
8f924df7 | 7827 | || SCHARS (start) == SBYTES (start)) |
df7492f9 KH |
7828 | return Qt; |
7829 | start_byte = 0; | |
8f924df7 | 7830 | end_byte = SBYTES (start); |
df7492f9 KH |
7831 | } |
7832 | else | |
d46c5b12 | 7833 | { |
df7492f9 KH |
7834 | CHECK_NUMBER_COERCE_MARKER (start); |
7835 | CHECK_NUMBER_COERCE_MARKER (end); | |
7836 | if (XINT (start) < BEG || XINT (end) > Z || XINT (start) > XINT (end)) | |
7837 | args_out_of_range (start, end); | |
7838 | if (NILP (current_buffer->enable_multibyte_characters)) | |
7839 | return Qt; | |
7840 | start_byte = CHAR_TO_BYTE (XINT (start)); | |
7841 | end_byte = CHAR_TO_BYTE (XINT (end)); | |
7842 | if (XINT (end) - XINT (start) == end_byte - start_byte) | |
7843 | return Qt; | |
d46c5b12 | 7844 | |
e1c23804 | 7845 | if (XINT (start) < GPT && XINT (end) > GPT) |
d46c5b12 | 7846 | { |
e1c23804 DL |
7847 | if ((GPT - XINT (start)) < (XINT (end) - GPT)) |
7848 | move_gap_both (XINT (start), start_byte); | |
df7492f9 | 7849 | else |
e1c23804 | 7850 | move_gap_both (XINT (end), end_byte); |
d46c5b12 KH |
7851 | } |
7852 | } | |
7853 | ||
df7492f9 KH |
7854 | coding_attrs_list = Qnil; |
7855 | for (tail = Vcoding_system_list; CONSP (tail); tail = XCDR (tail)) | |
7856 | if (NILP (exclude) | |
7857 | || NILP (Fmemq (XCAR (tail), exclude))) | |
7858 | { | |
7859 | Lisp_Object attrs; | |
d46c5b12 | 7860 | |
df7492f9 KH |
7861 | attrs = AREF (CODING_SYSTEM_SPEC (XCAR (tail)), 0); |
7862 | if (EQ (XCAR (tail), CODING_ATTR_BASE_NAME (attrs)) | |
7863 | && ! EQ (CODING_ATTR_TYPE (attrs), Qundecided)) | |
7d64c6ad KH |
7864 | { |
7865 | ASET (attrs, coding_attr_trans_tbl, | |
2170c8f0 | 7866 | get_translation_table (attrs, 1, NULL)); |
7d64c6ad KH |
7867 | coding_attrs_list = Fcons (attrs, coding_attrs_list); |
7868 | } | |
df7492f9 | 7869 | } |
d46c5b12 | 7870 | |
df7492f9 | 7871 | if (STRINGP (start)) |
8f924df7 | 7872 | p = pbeg = SDATA (start); |
df7492f9 KH |
7873 | else |
7874 | p = pbeg = BYTE_POS_ADDR (start_byte); | |
7875 | pend = p + (end_byte - start_byte); | |
b843d1ae | 7876 | |
df7492f9 KH |
7877 | while (p < pend && ASCII_BYTE_P (*p)) p++; |
7878 | while (p < pend && ASCII_BYTE_P (*(pend - 1))) pend--; | |
d46c5b12 | 7879 | |
05e6f5dc | 7880 | while (p < pend) |
72d1a715 | 7881 | { |
df7492f9 KH |
7882 | if (ASCII_BYTE_P (*p)) |
7883 | p++; | |
72d1a715 RS |
7884 | else |
7885 | { | |
df7492f9 | 7886 | c = STRING_CHAR_ADVANCE (p); |
12410ef1 | 7887 | |
df7492f9 KH |
7888 | charset_map_loaded = 0; |
7889 | for (tail = coding_attrs_list; CONSP (tail);) | |
7890 | { | |
7891 | elt = XCAR (tail); | |
7892 | if (NILP (elt)) | |
7893 | tail = XCDR (tail); | |
7894 | else if (char_encodable_p (c, elt)) | |
7895 | tail = XCDR (tail); | |
7896 | else if (CONSP (XCDR (tail))) | |
7897 | { | |
7898 | XSETCAR (tail, XCAR (XCDR (tail))); | |
7899 | XSETCDR (tail, XCDR (XCDR (tail))); | |
7900 | } | |
7901 | else | |
7902 | { | |
7903 | XSETCAR (tail, Qnil); | |
7904 | tail = XCDR (tail); | |
7905 | } | |
7906 | } | |
7907 | if (charset_map_loaded) | |
7908 | { | |
7909 | EMACS_INT p_offset = p - pbeg, pend_offset = pend - pbeg; | |
05e6f5dc | 7910 | |
df7492f9 | 7911 | if (STRINGP (start)) |
8f924df7 | 7912 | pbeg = SDATA (start); |
df7492f9 KH |
7913 | else |
7914 | pbeg = BYTE_POS_ADDR (start_byte); | |
7915 | p = pbeg + p_offset; | |
7916 | pend = pbeg + pend_offset; | |
7917 | } | |
7918 | } | |
ec6d2bb8 | 7919 | } |
fb88bf2d | 7920 | |
988b3759 | 7921 | safe_codings = list2 (Qraw_text, Qno_conversion); |
df7492f9 KH |
7922 | for (tail = coding_attrs_list; CONSP (tail); tail = XCDR (tail)) |
7923 | if (! NILP (XCAR (tail))) | |
7924 | safe_codings = Fcons (CODING_ATTR_BASE_NAME (XCAR (tail)), safe_codings); | |
ec6d2bb8 | 7925 | |
05e6f5dc KH |
7926 | return safe_codings; |
7927 | } | |
4956c225 | 7928 | |
d46c5b12 | 7929 | |
8f924df7 KH |
7930 | DEFUN ("unencodable-char-position", Funencodable_char_position, |
7931 | Sunencodable_char_position, 3, 5, 0, | |
7932 | doc: /* | |
7933 | Return position of first un-encodable character in a region. | |
7934 | START and END specfiy the region and CODING-SYSTEM specifies the | |
7935 | encoding to check. Return nil if CODING-SYSTEM does encode the region. | |
d46c5b12 | 7936 | |
8f924df7 KH |
7937 | If optional 4th argument COUNT is non-nil, it specifies at most how |
7938 | many un-encodable characters to search. In this case, the value is a | |
7939 | list of positions. | |
d46c5b12 | 7940 | |
8f924df7 KH |
7941 | If optional 5th argument STRING is non-nil, it is a string to search |
7942 | for un-encodable characters. In that case, START and END are indexes | |
7943 | to the string. */) | |
7944 | (start, end, coding_system, count, string) | |
7945 | Lisp_Object start, end, coding_system, count, string; | |
7946 | { | |
7947 | int n; | |
7948 | struct coding_system coding; | |
7d64c6ad | 7949 | Lisp_Object attrs, charset_list, translation_table; |
8f924df7 KH |
7950 | Lisp_Object positions; |
7951 | int from, to; | |
7952 | const unsigned char *p, *stop, *pend; | |
7953 | int ascii_compatible; | |
fb88bf2d | 7954 | |
8f924df7 KH |
7955 | setup_coding_system (Fcheck_coding_system (coding_system), &coding); |
7956 | attrs = CODING_ID_ATTRS (coding.id); | |
7957 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) | |
7958 | return Qnil; | |
7959 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); | |
7960 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
2170c8f0 | 7961 | translation_table = get_translation_table (attrs, 1, NULL); |
fb88bf2d | 7962 | |
8f924df7 KH |
7963 | if (NILP (string)) |
7964 | { | |
7965 | validate_region (&start, &end); | |
7966 | from = XINT (start); | |
7967 | to = XINT (end); | |
7968 | if (NILP (current_buffer->enable_multibyte_characters) | |
7969 | || (ascii_compatible | |
7970 | && (to - from) == (CHAR_TO_BYTE (to) - (CHAR_TO_BYTE (from))))) | |
7971 | return Qnil; | |
7972 | p = CHAR_POS_ADDR (from); | |
7973 | pend = CHAR_POS_ADDR (to); | |
7974 | if (from < GPT && to >= GPT) | |
7975 | stop = GPT_ADDR; | |
7976 | else | |
7977 | stop = pend; | |
7978 | } | |
7979 | else | |
7980 | { | |
7981 | CHECK_STRING (string); | |
7982 | CHECK_NATNUM (start); | |
7983 | CHECK_NATNUM (end); | |
7984 | from = XINT (start); | |
7985 | to = XINT (end); | |
7986 | if (from > to | |
7987 | || to > SCHARS (string)) | |
7988 | args_out_of_range_3 (string, start, end); | |
7989 | if (! STRING_MULTIBYTE (string)) | |
7990 | return Qnil; | |
7991 | p = SDATA (string) + string_char_to_byte (string, from); | |
7992 | stop = pend = SDATA (string) + string_char_to_byte (string, to); | |
7993 | if (ascii_compatible && (to - from) == (pend - p)) | |
7994 | return Qnil; | |
7995 | } | |
f2558efd | 7996 | |
8f924df7 KH |
7997 | if (NILP (count)) |
7998 | n = 1; | |
7999 | else | |
b73bfc1c | 8000 | { |
8f924df7 KH |
8001 | CHECK_NATNUM (count); |
8002 | n = XINT (count); | |
b73bfc1c KH |
8003 | } |
8004 | ||
8f924df7 KH |
8005 | positions = Qnil; |
8006 | while (1) | |
d46c5b12 | 8007 | { |
8f924df7 | 8008 | int c; |
ec6d2bb8 | 8009 | |
8f924df7 KH |
8010 | if (ascii_compatible) |
8011 | while (p < stop && ASCII_BYTE_P (*p)) | |
8012 | p++, from++; | |
8013 | if (p >= stop) | |
0e79d667 | 8014 | { |
8f924df7 KH |
8015 | if (p >= pend) |
8016 | break; | |
8017 | stop = pend; | |
8018 | p = GAP_END_ADDR; | |
0e79d667 | 8019 | } |
ec6d2bb8 | 8020 | |
8f924df7 KH |
8021 | c = STRING_CHAR_ADVANCE (p); |
8022 | if (! (ASCII_CHAR_P (c) && ascii_compatible) | |
7d64c6ad KH |
8023 | && ! char_charset (translate_char (translation_table, c), |
8024 | charset_list, NULL)) | |
ec6d2bb8 | 8025 | { |
8f924df7 KH |
8026 | positions = Fcons (make_number (from), positions); |
8027 | n--; | |
8028 | if (n == 0) | |
8029 | break; | |
ec6d2bb8 KH |
8030 | } |
8031 | ||
8f924df7 KH |
8032 | from++; |
8033 | } | |
d46c5b12 | 8034 | |
8f924df7 KH |
8035 | return (NILP (count) ? Fcar (positions) : Fnreverse (positions)); |
8036 | } | |
d46c5b12 | 8037 | |
d46c5b12 | 8038 | |
df7492f9 KH |
8039 | DEFUN ("check-coding-systems-region", Fcheck_coding_systems_region, |
8040 | Scheck_coding_systems_region, 3, 3, 0, | |
8041 | doc: /* Check if the region is encodable by coding systems. | |
d46c5b12 | 8042 | |
df7492f9 KH |
8043 | START and END are buffer positions specifying the region. |
8044 | CODING-SYSTEM-LIST is a list of coding systems to check. | |
d46c5b12 | 8045 | |
df7492f9 KH |
8046 | The value is an alist ((CODING-SYSTEM POS0 POS1 ...) ...), where |
8047 | CODING-SYSTEM is a member of CODING-SYSTEM-LIst and can't encode the | |
8048 | whole region, POS0, POS1, ... are buffer positions where non-encodable | |
8049 | characters are found. | |
93dec019 | 8050 | |
df7492f9 KH |
8051 | If all coding systems in CODING-SYSTEM-LIST can encode the region, the |
8052 | value is nil. | |
93dec019 | 8053 | |
df7492f9 KH |
8054 | START may be a string. In that case, check if the string is |
8055 | encodable, and the value contains indices to the string instead of | |
8056 | buffer positions. END is ignored. */) | |
8057 | (start, end, coding_system_list) | |
8058 | Lisp_Object start, end, coding_system_list; | |
05e6f5dc | 8059 | { |
df7492f9 KH |
8060 | Lisp_Object list; |
8061 | EMACS_INT start_byte, end_byte; | |
8062 | int pos; | |
7c78e542 | 8063 | const unsigned char *p, *pbeg, *pend; |
df7492f9 | 8064 | int c; |
7d64c6ad | 8065 | Lisp_Object tail, elt, attrs; |
70ad9fc4 | 8066 | |
05e6f5dc KH |
8067 | if (STRINGP (start)) |
8068 | { | |
df7492f9 | 8069 | if (!STRING_MULTIBYTE (start) |
8f924df7 | 8070 | && SCHARS (start) != SBYTES (start)) |
df7492f9 KH |
8071 | return Qnil; |
8072 | start_byte = 0; | |
8f924df7 | 8073 | end_byte = SBYTES (start); |
df7492f9 | 8074 | pos = 0; |
d46c5b12 | 8075 | } |
05e6f5dc | 8076 | else |
b73bfc1c | 8077 | { |
b7826503 PJ |
8078 | CHECK_NUMBER_COERCE_MARKER (start); |
8079 | CHECK_NUMBER_COERCE_MARKER (end); | |
05e6f5dc KH |
8080 | if (XINT (start) < BEG || XINT (end) > Z || XINT (start) > XINT (end)) |
8081 | args_out_of_range (start, end); | |
8082 | if (NILP (current_buffer->enable_multibyte_characters)) | |
df7492f9 KH |
8083 | return Qnil; |
8084 | start_byte = CHAR_TO_BYTE (XINT (start)); | |
8085 | end_byte = CHAR_TO_BYTE (XINT (end)); | |
8086 | if (XINT (end) - XINT (start) == end_byte - start_byte) | |
05e6f5dc | 8087 | return Qt; |
df7492f9 | 8088 | |
e1c23804 | 8089 | if (XINT (start) < GPT && XINT (end) > GPT) |
b73bfc1c | 8090 | { |
e1c23804 DL |
8091 | if ((GPT - XINT (start)) < (XINT (end) - GPT)) |
8092 | move_gap_both (XINT (start), start_byte); | |
df7492f9 | 8093 | else |
e1c23804 | 8094 | move_gap_both (XINT (end), end_byte); |
b73bfc1c | 8095 | } |
e1c23804 | 8096 | pos = XINT (start); |
b73bfc1c | 8097 | } |
7553d0e1 | 8098 | |
df7492f9 KH |
8099 | list = Qnil; |
8100 | for (tail = coding_system_list; CONSP (tail); tail = XCDR (tail)) | |
12410ef1 | 8101 | { |
df7492f9 | 8102 | elt = XCAR (tail); |
7d64c6ad | 8103 | attrs = AREF (CODING_SYSTEM_SPEC (elt), 0); |
2170c8f0 KH |
8104 | ASET (attrs, coding_attr_trans_tbl, |
8105 | get_translation_table (attrs, 1, NULL)); | |
7d64c6ad | 8106 | list = Fcons (Fcons (elt, Fcons (attrs, Qnil)), list); |
12410ef1 KH |
8107 | } |
8108 | ||
df7492f9 | 8109 | if (STRINGP (start)) |
8f924df7 | 8110 | p = pbeg = SDATA (start); |
72d1a715 | 8111 | else |
df7492f9 KH |
8112 | p = pbeg = BYTE_POS_ADDR (start_byte); |
8113 | pend = p + (end_byte - start_byte); | |
4ed46869 | 8114 | |
df7492f9 KH |
8115 | while (p < pend && ASCII_BYTE_P (*p)) p++, pos++; |
8116 | while (p < pend && ASCII_BYTE_P (*(pend - 1))) pend--; | |
ec6d2bb8 | 8117 | |
df7492f9 | 8118 | while (p < pend) |
d46c5b12 | 8119 | { |
df7492f9 KH |
8120 | if (ASCII_BYTE_P (*p)) |
8121 | p++; | |
e133c8fa | 8122 | else |
05e6f5dc | 8123 | { |
df7492f9 KH |
8124 | c = STRING_CHAR_ADVANCE (p); |
8125 | ||
8126 | charset_map_loaded = 0; | |
8127 | for (tail = list; CONSP (tail); tail = XCDR (tail)) | |
8128 | { | |
8129 | elt = XCDR (XCAR (tail)); | |
8130 | if (! char_encodable_p (c, XCAR (elt))) | |
8131 | XSETCDR (elt, Fcons (make_number (pos), XCDR (elt))); | |
8132 | } | |
8133 | if (charset_map_loaded) | |
8134 | { | |
8135 | EMACS_INT p_offset = p - pbeg, pend_offset = pend - pbeg; | |
8136 | ||
8137 | if (STRINGP (start)) | |
8f924df7 | 8138 | pbeg = SDATA (start); |
df7492f9 KH |
8139 | else |
8140 | pbeg = BYTE_POS_ADDR (start_byte); | |
8141 | p = pbeg + p_offset; | |
8142 | pend = pbeg + pend_offset; | |
8143 | } | |
05e6f5dc | 8144 | } |
df7492f9 | 8145 | pos++; |
d46c5b12 | 8146 | } |
4ed46869 | 8147 | |
df7492f9 KH |
8148 | tail = list; |
8149 | list = Qnil; | |
8150 | for (; CONSP (tail); tail = XCDR (tail)) | |
ec6d2bb8 | 8151 | { |
df7492f9 KH |
8152 | elt = XCAR (tail); |
8153 | if (CONSP (XCDR (XCDR (elt)))) | |
8154 | list = Fcons (Fcons (XCAR (elt), Fnreverse (XCDR (XCDR (elt)))), | |
8155 | list); | |
ec6d2bb8 | 8156 | } |
2b4f9037 | 8157 | |
df7492f9 | 8158 | return list; |
d46c5b12 KH |
8159 | } |
8160 | ||
3fd9494b | 8161 | |
b73bfc1c | 8162 | Lisp_Object |
df7492f9 KH |
8163 | code_convert_region (start, end, coding_system, dst_object, encodep, norecord) |
8164 | Lisp_Object start, end, coding_system, dst_object; | |
8165 | int encodep, norecord; | |
4ed46869 | 8166 | { |
3a73fa5d | 8167 | struct coding_system coding; |
df7492f9 KH |
8168 | EMACS_INT from, from_byte, to, to_byte; |
8169 | Lisp_Object src_object; | |
4ed46869 | 8170 | |
b7826503 PJ |
8171 | CHECK_NUMBER_COERCE_MARKER (start); |
8172 | CHECK_NUMBER_COERCE_MARKER (end); | |
df7492f9 KH |
8173 | if (NILP (coding_system)) |
8174 | coding_system = Qno_conversion; | |
8175 | else | |
8176 | CHECK_CODING_SYSTEM (coding_system); | |
8177 | src_object = Fcurrent_buffer (); | |
8178 | if (NILP (dst_object)) | |
8179 | dst_object = src_object; | |
8180 | else if (! EQ (dst_object, Qt)) | |
8181 | CHECK_BUFFER (dst_object); | |
3a73fa5d | 8182 | |
d46c5b12 KH |
8183 | validate_region (&start, &end); |
8184 | from = XFASTINT (start); | |
df7492f9 | 8185 | from_byte = CHAR_TO_BYTE (from); |
d46c5b12 | 8186 | to = XFASTINT (end); |
df7492f9 | 8187 | to_byte = CHAR_TO_BYTE (to); |
764ca8da | 8188 | |
df7492f9 KH |
8189 | setup_coding_system (coding_system, &coding); |
8190 | coding.mode |= CODING_MODE_LAST_BLOCK; | |
ec6d2bb8 | 8191 | |
df7492f9 KH |
8192 | if (encodep) |
8193 | encode_coding_object (&coding, src_object, from, from_byte, to, to_byte, | |
8194 | dst_object); | |
8195 | else | |
8196 | decode_coding_object (&coding, src_object, from, from_byte, to, to_byte, | |
8197 | dst_object); | |
8198 | if (! norecord) | |
8199 | Vlast_coding_system_used = CODING_ID_NAME (coding.id); | |
ec6d2bb8 | 8200 | |
df7492f9 KH |
8201 | return (BUFFERP (dst_object) |
8202 | ? make_number (coding.produced_char) | |
8203 | : coding.dst_object); | |
4031e2bf | 8204 | } |
78108bcd | 8205 | |
4ed46869 | 8206 | |
4031e2bf | 8207 | DEFUN ("decode-coding-region", Fdecode_coding_region, Sdecode_coding_region, |
df7492f9 | 8208 | 3, 4, "r\nzCoding system: ", |
48b0f3ae | 8209 | doc: /* Decode the current region from the specified coding system. |
df7492f9 KH |
8210 | When called from a program, takes four arguments: |
8211 | START, END, CODING-SYSTEM, and DESTINATION. | |
8212 | START and END are buffer positions. | |
8844fa83 | 8213 | |
df7492f9 | 8214 | Optional 4th arguments DESTINATION specifies where the decoded text goes. |
2354b80b | 8215 | If nil, the region between START and END is replaced by the decoded text. |
df7492f9 KH |
8216 | If buffer, the decoded text is inserted in the buffer. |
8217 | If t, the decoded text is returned. | |
8844fa83 | 8218 | |
48b0f3ae PJ |
8219 | This function sets `last-coding-system-used' to the precise coding system |
8220 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
8221 | not fully specified.) | |
8222 | It returns the length of the decoded text. */) | |
df7492f9 KH |
8223 | (start, end, coding_system, destination) |
8224 | Lisp_Object start, end, coding_system, destination; | |
4031e2bf | 8225 | { |
df7492f9 | 8226 | return code_convert_region (start, end, coding_system, destination, 0, 0); |
3a73fa5d | 8227 | } |
8844fa83 | 8228 | |
3a73fa5d | 8229 | DEFUN ("encode-coding-region", Fencode_coding_region, Sencode_coding_region, |
df7492f9 KH |
8230 | 3, 4, "r\nzCoding system: ", |
8231 | doc: /* Encode the current region by specified coding system. | |
48b0f3ae PJ |
8232 | When called from a program, takes three arguments: |
8233 | START, END, and CODING-SYSTEM. START and END are buffer positions. | |
d46c5b12 | 8234 | |
df7492f9 KH |
8235 | Optional 4th arguments DESTINATION specifies where the encoded text goes. |
8236 | If nil, the region between START and END is replace by the encoded text. | |
8237 | If buffer, the encoded text is inserted in the buffer. | |
8238 | If t, the encoded text is returned. | |
2391eaa4 | 8239 | |
48b0f3ae PJ |
8240 | This function sets `last-coding-system-used' to the precise coding system |
8241 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
8242 | not fully specified.) | |
8243 | It returns the length of the encoded text. */) | |
df7492f9 KH |
8244 | (start, end, coding_system, destination) |
8245 | Lisp_Object start, end, coding_system, destination; | |
3a73fa5d | 8246 | { |
df7492f9 | 8247 | return code_convert_region (start, end, coding_system, destination, 1, 0); |
b73bfc1c KH |
8248 | } |
8249 | ||
8250 | Lisp_Object | |
df7492f9 KH |
8251 | code_convert_string (string, coding_system, dst_object, |
8252 | encodep, nocopy, norecord) | |
8253 | Lisp_Object string, coding_system, dst_object; | |
8254 | int encodep, nocopy, norecord; | |
b73bfc1c | 8255 | { |
4031e2bf | 8256 | struct coding_system coding; |
df7492f9 | 8257 | EMACS_INT chars, bytes; |
ec6d2bb8 | 8258 | |
b7826503 | 8259 | CHECK_STRING (string); |
d46c5b12 | 8260 | if (NILP (coding_system)) |
4956c225 | 8261 | { |
df7492f9 KH |
8262 | if (! norecord) |
8263 | Vlast_coding_system_used = Qno_conversion; | |
8264 | if (NILP (dst_object)) | |
8265 | return (nocopy ? Fcopy_sequence (string) : string); | |
4956c225 | 8266 | } |
b73bfc1c | 8267 | |
df7492f9 KH |
8268 | if (NILP (coding_system)) |
8269 | coding_system = Qno_conversion; | |
8270 | else | |
8271 | CHECK_CODING_SYSTEM (coding_system); | |
8272 | if (NILP (dst_object)) | |
8273 | dst_object = Qt; | |
8274 | else if (! EQ (dst_object, Qt)) | |
8275 | CHECK_BUFFER (dst_object); | |
73be902c | 8276 | |
df7492f9 | 8277 | setup_coding_system (coding_system, &coding); |
d46c5b12 | 8278 | coding.mode |= CODING_MODE_LAST_BLOCK; |
8f924df7 KH |
8279 | chars = SCHARS (string); |
8280 | bytes = SBYTES (string); | |
df7492f9 KH |
8281 | if (encodep) |
8282 | encode_coding_object (&coding, string, 0, 0, chars, bytes, dst_object); | |
8283 | else | |
8284 | decode_coding_object (&coding, string, 0, 0, chars, bytes, dst_object); | |
8285 | if (! norecord) | |
8286 | Vlast_coding_system_used = CODING_ID_NAME (coding.id); | |
73be902c | 8287 | |
df7492f9 KH |
8288 | return (BUFFERP (dst_object) |
8289 | ? make_number (coding.produced_char) | |
8290 | : coding.dst_object); | |
4ed46869 | 8291 | } |
73be902c | 8292 | |
b73bfc1c | 8293 | |
ecec61c1 | 8294 | /* Encode or decode STRING according to CODING_SYSTEM. |
ec6d2bb8 | 8295 | Do not set Vlast_coding_system_used. |
4ed46869 | 8296 | |
ec6d2bb8 KH |
8297 | This function is called only from macros DECODE_FILE and |
8298 | ENCODE_FILE, thus we ignore character composition. */ | |
4ed46869 | 8299 | |
ecec61c1 KH |
8300 | Lisp_Object |
8301 | code_convert_string_norecord (string, coding_system, encodep) | |
8302 | Lisp_Object string, coding_system; | |
8303 | int encodep; | |
4ed46869 | 8304 | { |
0be8721c | 8305 | return code_convert_string (string, coding_system, Qt, encodep, 0, 1); |
4ed46869 KH |
8306 | } |
8307 | ||
4ed46869 | 8308 | |
df7492f9 KH |
8309 | DEFUN ("decode-coding-string", Fdecode_coding_string, Sdecode_coding_string, |
8310 | 2, 4, 0, | |
8311 | doc: /* Decode STRING which is encoded in CODING-SYSTEM, and return the result. | |
8312 | ||
8313 | Optional third arg NOCOPY non-nil means it is OK to return STRING itself | |
8314 | if the decoding operation is trivial. | |
ecec61c1 | 8315 | |
df7492f9 | 8316 | Optional fourth arg BUFFER non-nil meant that the decoded text is |
a3f6ee6d | 8317 | inserted in BUFFER instead of returned as a string. In this case, |
df7492f9 | 8318 | the return value is BUFFER. |
ecec61c1 | 8319 | |
df7492f9 KH |
8320 | This function sets `last-coding-system-used' to the precise coding system |
8321 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
8322 | not fully specified. */) | |
8323 | (string, coding_system, nocopy, buffer) | |
8324 | Lisp_Object string, coding_system, nocopy, buffer; | |
4ed46869 | 8325 | { |
df7492f9 KH |
8326 | return code_convert_string (string, coding_system, buffer, |
8327 | 0, ! NILP (nocopy), 0); | |
4ed46869 KH |
8328 | } |
8329 | ||
df7492f9 KH |
8330 | DEFUN ("encode-coding-string", Fencode_coding_string, Sencode_coding_string, |
8331 | 2, 4, 0, | |
8332 | doc: /* Encode STRING to CODING-SYSTEM, and return the result. | |
8333 | ||
8334 | Optional third arg NOCOPY non-nil means it is OK to return STRING | |
8335 | itself if the encoding operation is trivial. | |
8336 | ||
8337 | Optional fourth arg BUFFER non-nil meant that the encoded text is | |
a3f6ee6d | 8338 | inserted in BUFFER instead of returned as a string. In this case, |
df7492f9 KH |
8339 | the return value is BUFFER. |
8340 | ||
8341 | This function sets `last-coding-system-used' to the precise coding system | |
8342 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
8343 | not fully specified.) */) | |
8344 | (string, coding_system, nocopy, buffer) | |
8345 | Lisp_Object string, coding_system, nocopy, buffer; | |
4ed46869 | 8346 | { |
df7492f9 | 8347 | return code_convert_string (string, coding_system, buffer, |
c197f191 | 8348 | 1, ! NILP (nocopy), 1); |
4ed46869 | 8349 | } |
df7492f9 | 8350 | |
3a73fa5d | 8351 | \f |
4ed46869 | 8352 | DEFUN ("decode-sjis-char", Fdecode_sjis_char, Sdecode_sjis_char, 1, 1, 0, |
48b0f3ae PJ |
8353 | doc: /* Decode a Japanese character which has CODE in shift_jis encoding. |
8354 | Return the corresponding character. */) | |
8355 | (code) | |
4ed46869 | 8356 | Lisp_Object code; |
4ed46869 | 8357 | { |
df7492f9 KH |
8358 | Lisp_Object spec, attrs, val; |
8359 | struct charset *charset_roman, *charset_kanji, *charset_kana, *charset; | |
8360 | int c; | |
4ed46869 | 8361 | |
df7492f9 KH |
8362 | CHECK_NATNUM (code); |
8363 | c = XFASTINT (code); | |
8364 | CHECK_CODING_SYSTEM_GET_SPEC (Vsjis_coding_system, spec); | |
8365 | attrs = AREF (spec, 0); | |
4ed46869 | 8366 | |
df7492f9 KH |
8367 | if (ASCII_BYTE_P (c) |
8368 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
8369 | return code; | |
4ed46869 | 8370 | |
df7492f9 KH |
8371 | val = CODING_ATTR_CHARSET_LIST (attrs); |
8372 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
004068e4 KH |
8373 | charset_kana = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
8374 | charset_kanji = CHARSET_FROM_ID (XINT (XCAR (val))); | |
fa42c37f | 8375 | |
df7492f9 KH |
8376 | if (c <= 0x7F) |
8377 | charset = charset_roman; | |
8378 | else if (c >= 0xA0 && c < 0xDF) | |
55ab7be3 | 8379 | { |
df7492f9 KH |
8380 | charset = charset_kana; |
8381 | c -= 0x80; | |
4ed46869 | 8382 | } |
55ab7be3 | 8383 | else |
4ed46869 | 8384 | { |
004068e4 | 8385 | int s1 = c >> 8, s2 = c & 0xFF; |
df7492f9 KH |
8386 | |
8387 | if (s1 < 0x81 || (s1 > 0x9F && s1 < 0xE0) || s1 > 0xEF | |
8388 | || s2 < 0x40 || s2 == 0x7F || s2 > 0xFC) | |
8389 | error ("Invalid code: %d", code); | |
8390 | SJIS_TO_JIS (c); | |
8391 | charset = charset_kanji; | |
4ed46869 | 8392 | } |
df7492f9 KH |
8393 | c = DECODE_CHAR (charset, c); |
8394 | if (c < 0) | |
8395 | error ("Invalid code: %d", code); | |
8396 | return make_number (c); | |
93dec019 | 8397 | } |
4ed46869 | 8398 | |
48b0f3ae | 8399 | |
4ed46869 | 8400 | DEFUN ("encode-sjis-char", Fencode_sjis_char, Sencode_sjis_char, 1, 1, 0, |
8acf0c0e | 8401 | doc: /* Encode a Japanese character CH to shift_jis encoding. |
48b0f3ae PJ |
8402 | Return the corresponding code in SJIS. */) |
8403 | (ch) | |
df7492f9 | 8404 | Lisp_Object ch; |
4ed46869 | 8405 | { |
df7492f9 KH |
8406 | Lisp_Object spec, attrs, charset_list; |
8407 | int c; | |
8408 | struct charset *charset; | |
8409 | unsigned code; | |
48b0f3ae | 8410 | |
df7492f9 KH |
8411 | CHECK_CHARACTER (ch); |
8412 | c = XFASTINT (ch); | |
8413 | CHECK_CODING_SYSTEM_GET_SPEC (Vsjis_coding_system, spec); | |
8414 | attrs = AREF (spec, 0); | |
8415 | ||
8416 | if (ASCII_CHAR_P (c) | |
8417 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
8418 | return ch; | |
8419 | ||
8420 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
8421 | charset = char_charset (c, charset_list, &code); | |
8422 | if (code == CHARSET_INVALID_CODE (charset)) | |
8423 | error ("Can't encode by shift_jis encoding: %d", c); | |
8424 | JIS_TO_SJIS (code); | |
8425 | ||
8426 | return make_number (code); | |
4ed46869 KH |
8427 | } |
8428 | ||
8429 | DEFUN ("decode-big5-char", Fdecode_big5_char, Sdecode_big5_char, 1, 1, 0, | |
48b0f3ae PJ |
8430 | doc: /* Decode a Big5 character which has CODE in BIG5 coding system. |
8431 | Return the corresponding character. */) | |
8432 | (code) | |
4ed46869 | 8433 | Lisp_Object code; |
d46c5b12 | 8434 | { |
df7492f9 KH |
8435 | Lisp_Object spec, attrs, val; |
8436 | struct charset *charset_roman, *charset_big5, *charset; | |
8437 | int c; | |
6289dd10 | 8438 | |
df7492f9 KH |
8439 | CHECK_NATNUM (code); |
8440 | c = XFASTINT (code); | |
8441 | CHECK_CODING_SYSTEM_GET_SPEC (Vbig5_coding_system, spec); | |
8442 | attrs = AREF (spec, 0); | |
4ed46869 | 8443 | |
df7492f9 KH |
8444 | if (ASCII_BYTE_P (c) |
8445 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
8446 | return code; | |
6289dd10 | 8447 | |
df7492f9 KH |
8448 | val = CODING_ATTR_CHARSET_LIST (attrs); |
8449 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
8450 | charset_big5 = CHARSET_FROM_ID (XINT (XCAR (val))); | |
c210f766 | 8451 | |
df7492f9 KH |
8452 | if (c <= 0x7F) |
8453 | charset = charset_roman; | |
c28a9453 KH |
8454 | else |
8455 | { | |
df7492f9 KH |
8456 | int b1 = c >> 8, b2 = c & 0x7F; |
8457 | if (b1 < 0xA1 || b1 > 0xFE | |
8458 | || b2 < 0x40 || (b2 > 0x7E && b2 < 0xA1) || b2 > 0xFE) | |
8459 | error ("Invalid code: %d", code); | |
8460 | charset = charset_big5; | |
c28a9453 | 8461 | } |
df7492f9 KH |
8462 | c = DECODE_CHAR (charset, (unsigned )c); |
8463 | if (c < 0) | |
8464 | error ("Invalid code: %d", code); | |
8465 | return make_number (c); | |
d46c5b12 | 8466 | } |
6289dd10 | 8467 | |
4ed46869 | 8468 | DEFUN ("encode-big5-char", Fencode_big5_char, Sencode_big5_char, 1, 1, 0, |
8acf0c0e | 8469 | doc: /* Encode the Big5 character CH to BIG5 coding system. |
48b0f3ae PJ |
8470 | Return the corresponding character code in Big5. */) |
8471 | (ch) | |
4ed46869 KH |
8472 | Lisp_Object ch; |
8473 | { | |
df7492f9 KH |
8474 | Lisp_Object spec, attrs, charset_list; |
8475 | struct charset *charset; | |
8476 | int c; | |
8477 | unsigned code; | |
8478 | ||
8479 | CHECK_CHARACTER (ch); | |
8480 | c = XFASTINT (ch); | |
8481 | CHECK_CODING_SYSTEM_GET_SPEC (Vbig5_coding_system, spec); | |
8482 | attrs = AREF (spec, 0); | |
8483 | if (ASCII_CHAR_P (c) | |
8484 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
8485 | return ch; | |
8486 | ||
8487 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
8488 | charset = char_charset (c, charset_list, &code); | |
8489 | if (code == CHARSET_INVALID_CODE (charset)) | |
8490 | error ("Can't encode by Big5 encoding: %d", c); | |
8491 | ||
8492 | return make_number (code); | |
4ed46869 | 8493 | } |
48b0f3ae | 8494 | |
3a73fa5d | 8495 | \f |
002fdb44 | 8496 | DEFUN ("set-terminal-coding-system-internal", Fset_terminal_coding_system_internal, |
68bba4e4 | 8497 | Sset_terminal_coding_system_internal, 1, 2, 0, |
48b0f3ae | 8498 | doc: /* Internal use only. */) |
6ed8eeff | 8499 | (coding_system, terminal) |
b74e4686 | 8500 | Lisp_Object coding_system; |
6ed8eeff | 8501 | Lisp_Object terminal; |
4ed46869 | 8502 | { |
6ed8eeff | 8503 | struct coding_system *terminal_coding = TERMINAL_TERMINAL_CODING (get_terminal (terminal, 1)); |
b7826503 | 8504 | CHECK_SYMBOL (coding_system); |
b8299c66 | 8505 | setup_coding_system (Fcheck_coding_system (coding_system), terminal_coding); |
70c22245 | 8506 | /* We had better not send unsafe characters to terminal. */ |
c73bd236 | 8507 | terminal_coding->mode |= CODING_MODE_SAFE_ENCODING; |
df7492f9 | 8508 | /* Characer composition should be disabled. */ |
c73bd236 | 8509 | terminal_coding->common_flags &= ~CODING_ANNOTATE_COMPOSITION_MASK; |
b8299c66 KL |
8510 | terminal_coding->src_multibyte = 1; |
8511 | terminal_coding->dst_multibyte = 0; | |
4ed46869 KH |
8512 | return Qnil; |
8513 | } | |
8514 | ||
c4825358 KH |
8515 | DEFUN ("set-safe-terminal-coding-system-internal", |
8516 | Fset_safe_terminal_coding_system_internal, | |
48b0f3ae | 8517 | Sset_safe_terminal_coding_system_internal, 1, 1, 0, |
ddb67bdc | 8518 | doc: /* Internal use only. */) |
48b0f3ae | 8519 | (coding_system) |
b74e4686 | 8520 | Lisp_Object coding_system; |
d46c5b12 | 8521 | { |
b7826503 | 8522 | CHECK_SYMBOL (coding_system); |
c4825358 KH |
8523 | setup_coding_system (Fcheck_coding_system (coding_system), |
8524 | &safe_terminal_coding); | |
df7492f9 KH |
8525 | /* Characer composition should be disabled. */ |
8526 | safe_terminal_coding.common_flags &= ~CODING_ANNOTATE_COMPOSITION_MASK; | |
b73bfc1c KH |
8527 | safe_terminal_coding.src_multibyte = 1; |
8528 | safe_terminal_coding.dst_multibyte = 0; | |
c4825358 KH |
8529 | return Qnil; |
8530 | } | |
4ed46869 | 8531 | |
002fdb44 | 8532 | DEFUN ("terminal-coding-system", Fterminal_coding_system, |
68bba4e4 | 8533 | Sterminal_coding_system, 0, 1, 0, |
6ed8eeff KL |
8534 | doc: /* Return coding system specified for terminal output on the given terminal. |
8535 | TERMINAL may be a terminal id, a frame, or nil for the selected | |
8536 | frame's terminal device. */) | |
8537 | (terminal) | |
8538 | Lisp_Object terminal; | |
4ed46869 | 8539 | { |
985773c9 MB |
8540 | struct coding_system *terminal_coding |
8541 | = TERMINAL_TERMINAL_CODING (get_terminal (terminal, 1)); | |
8542 | Lisp_Object coding_system = CODING_ID_NAME (terminal_coding->id); | |
ae6f73fa | 8543 | |
ae6f73fa | 8544 | /* For backward compatibility, return nil if it is `undecided'. */ |
f75c90a9 | 8545 | return (! EQ (coding_system, Qundecided) ? coding_system : Qnil); |
4ed46869 KH |
8546 | } |
8547 | ||
002fdb44 | 8548 | DEFUN ("set-keyboard-coding-system-internal", Fset_keyboard_coding_system_internal, |
68bba4e4 | 8549 | Sset_keyboard_coding_system_internal, 1, 2, 0, |
48b0f3ae | 8550 | doc: /* Internal use only. */) |
6ed8eeff | 8551 | (coding_system, terminal) |
4ed46869 | 8552 | Lisp_Object coding_system; |
6ed8eeff | 8553 | Lisp_Object terminal; |
4ed46869 | 8554 | { |
6ed8eeff | 8555 | struct terminal *t = get_terminal (terminal, 1); |
b7826503 | 8556 | CHECK_SYMBOL (coding_system); |
df7492f9 | 8557 | setup_coding_system (Fcheck_coding_system (coding_system), |
c73bd236 | 8558 | TERMINAL_KEYBOARD_CODING (t)); |
df7492f9 | 8559 | /* Characer composition should be disabled. */ |
c73bd236 MB |
8560 | TERMINAL_KEYBOARD_CODING (t)->common_flags |
8561 | &= ~CODING_ANNOTATE_COMPOSITION_MASK; | |
4ed46869 KH |
8562 | return Qnil; |
8563 | } | |
8564 | ||
8565 | DEFUN ("keyboard-coding-system", | |
985773c9 | 8566 | Fkeyboard_coding_system, Skeyboard_coding_system, 0, 1, 0, |
48b0f3ae | 8567 | doc: /* Return coding system specified for decoding keyboard input. */) |
985773c9 MB |
8568 | (terminal) |
8569 | Lisp_Object terminal; | |
4ed46869 | 8570 | { |
985773c9 MB |
8571 | return CODING_ID_NAME (TERMINAL_KEYBOARD_CODING |
8572 | (get_terminal (terminal, 1))->id); | |
4ed46869 KH |
8573 | } |
8574 | ||
4ed46869 | 8575 | \f |
a5d301df KH |
8576 | DEFUN ("find-operation-coding-system", Ffind_operation_coding_system, |
8577 | Sfind_operation_coding_system, 1, MANY, 0, | |
48b0f3ae PJ |
8578 | doc: /* Choose a coding system for an operation based on the target name. |
8579 | The value names a pair of coding systems: (DECODING-SYSTEM . ENCODING-SYSTEM). | |
8580 | DECODING-SYSTEM is the coding system to use for decoding | |
8581 | \(in case OPERATION does decoding), and ENCODING-SYSTEM is the coding system | |
8582 | for encoding (in case OPERATION does encoding). | |
05e6f5dc | 8583 | |
48b0f3ae PJ |
8584 | The first argument OPERATION specifies an I/O primitive: |
8585 | For file I/O, `insert-file-contents' or `write-region'. | |
8586 | For process I/O, `call-process', `call-process-region', or `start-process'. | |
8587 | For network I/O, `open-network-stream'. | |
05e6f5dc | 8588 | |
48b0f3ae PJ |
8589 | The remaining arguments should be the same arguments that were passed |
8590 | to the primitive. Depending on which primitive, one of those arguments | |
8591 | is selected as the TARGET. For example, if OPERATION does file I/O, | |
8592 | whichever argument specifies the file name is TARGET. | |
05e6f5dc | 8593 | |
48b0f3ae | 8594 | TARGET has a meaning which depends on OPERATION: |
b883cdb2 | 8595 | For file I/O, TARGET is a file name (except for the special case below). |
48b0f3ae PJ |
8596 | For process I/O, TARGET is a process name. |
8597 | For network I/O, TARGET is a service name or a port number | |
05e6f5dc | 8598 | |
48b0f3ae PJ |
8599 | This function looks up what specified for TARGET in, |
8600 | `file-coding-system-alist', `process-coding-system-alist', | |
8601 | or `network-coding-system-alist' depending on OPERATION. | |
8602 | They may specify a coding system, a cons of coding systems, | |
8603 | or a function symbol to call. | |
8604 | In the last case, we call the function with one argument, | |
8605 | which is a list of all the arguments given to this function. | |
1011c487 MB |
8606 | If the function can't decide a coding system, it can return |
8607 | `undecided' so that the normal code-detection is performed. | |
48b0f3ae | 8608 | |
b883cdb2 MB |
8609 | If OPERATION is `insert-file-contents', the argument corresponding to |
8610 | TARGET may be a cons (FILENAME . BUFFER). In that case, FILENAME is a | |
8611 | file name to look up, and BUFFER is a buffer that contains the file's | |
8612 | contents (not yet decoded). If `file-coding-system-alist' specifies a | |
8613 | function to call for FILENAME, that function should examine the | |
8614 | contents of BUFFER instead of reading the file. | |
8615 | ||
d918f936 | 8616 | usage: (find-operation-coding-system OPERATION ARGUMENTS...) */) |
48b0f3ae | 8617 | (nargs, args) |
4ed46869 KH |
8618 | int nargs; |
8619 | Lisp_Object *args; | |
6b89e3aa | 8620 | { |
4ed46869 KH |
8621 | Lisp_Object operation, target_idx, target, val; |
8622 | register Lisp_Object chain; | |
177c0ea7 | 8623 | |
4ed46869 KH |
8624 | if (nargs < 2) |
8625 | error ("Too few arguments"); | |
8626 | operation = args[0]; | |
8627 | if (!SYMBOLP (operation) | |
8628 | || !INTEGERP (target_idx = Fget (operation, Qtarget_idx))) | |
df7492f9 | 8629 | error ("Invalid first arguement"); |
4ed46869 KH |
8630 | if (nargs < 1 + XINT (target_idx)) |
8631 | error ("Too few arguments for operation: %s", | |
8f924df7 | 8632 | SDATA (SYMBOL_NAME (operation))); |
4ed46869 KH |
8633 | target = args[XINT (target_idx) + 1]; |
8634 | if (!(STRINGP (target) | |
091a0ff0 KH |
8635 | || (EQ (operation, Qinsert_file_contents) && CONSP (target) |
8636 | && STRINGP (XCAR (target)) && BUFFERP (XCDR (target))) | |
4ed46869 | 8637 | || (EQ (operation, Qopen_network_stream) && INTEGERP (target)))) |
df7492f9 | 8638 | error ("Invalid %dth argument", XINT (target_idx) + 1); |
091a0ff0 KH |
8639 | if (CONSP (target)) |
8640 | target = XCAR (target); | |
4ed46869 | 8641 | |
2e34157c RS |
8642 | chain = ((EQ (operation, Qinsert_file_contents) |
8643 | || EQ (operation, Qwrite_region)) | |
02ba4723 | 8644 | ? Vfile_coding_system_alist |
2e34157c | 8645 | : (EQ (operation, Qopen_network_stream) |
02ba4723 KH |
8646 | ? Vnetwork_coding_system_alist |
8647 | : Vprocess_coding_system_alist)); | |
4ed46869 KH |
8648 | if (NILP (chain)) |
8649 | return Qnil; | |
8650 | ||
03699b14 | 8651 | for (; CONSP (chain); chain = XCDR (chain)) |
6b89e3aa | 8652 | { |
f44d27ce | 8653 | Lisp_Object elt; |
6b89e3aa | 8654 | |
df7492f9 | 8655 | elt = XCAR (chain); |
4ed46869 KH |
8656 | if (CONSP (elt) |
8657 | && ((STRINGP (target) | |
03699b14 KR |
8658 | && STRINGP (XCAR (elt)) |
8659 | && fast_string_match (XCAR (elt), target) >= 0) | |
8660 | || (INTEGERP (target) && EQ (target, XCAR (elt))))) | |
6b89e3aa | 8661 | { |
03699b14 | 8662 | val = XCDR (elt); |
b19fd4c5 KH |
8663 | /* Here, if VAL is both a valid coding system and a valid |
8664 | function symbol, we return VAL as a coding system. */ | |
02ba4723 KH |
8665 | if (CONSP (val)) |
8666 | return val; | |
8667 | if (! SYMBOLP (val)) | |
8668 | return Qnil; | |
8669 | if (! NILP (Fcoding_system_p (val))) | |
8670 | return Fcons (val, val); | |
b19fd4c5 | 8671 | if (! NILP (Ffboundp (val))) |
6b89e3aa | 8672 | { |
e2b97060 MB |
8673 | /* We use call1 rather than safe_call1 |
8674 | so as to get bug reports about functions called here | |
8675 | which don't handle the current interface. */ | |
8676 | val = call1 (val, Flist (nargs, args)); | |
b19fd4c5 KH |
8677 | if (CONSP (val)) |
8678 | return val; | |
8679 | if (SYMBOLP (val) && ! NILP (Fcoding_system_p (val))) | |
8680 | return Fcons (val, val); | |
6b89e3aa | 8681 | } |
02ba4723 | 8682 | return Qnil; |
6b89e3aa KH |
8683 | } |
8684 | } | |
4ed46869 | 8685 | return Qnil; |
6b89e3aa KH |
8686 | } |
8687 | ||
df7492f9 | 8688 | DEFUN ("set-coding-system-priority", Fset_coding_system_priority, |
a3f6ee6d | 8689 | Sset_coding_system_priority, 0, MANY, 0, |
da7db224 | 8690 | doc: /* Assign higher priority to the coding systems given as arguments. |
ff563fce | 8691 | If multiple coding systems belongs to the same category, |
a3181084 DL |
8692 | all but the first one are ignored. |
8693 | ||
8694 | usage: (set-coding-system-priority ...) */) | |
df7492f9 KH |
8695 | (nargs, args) |
8696 | int nargs; | |
8697 | Lisp_Object *args; | |
8698 | { | |
8699 | int i, j; | |
8700 | int changed[coding_category_max]; | |
8701 | enum coding_category priorities[coding_category_max]; | |
8702 | ||
8703 | bzero (changed, sizeof changed); | |
6b89e3aa | 8704 | |
df7492f9 | 8705 | for (i = j = 0; i < nargs; i++) |
6b89e3aa | 8706 | { |
df7492f9 KH |
8707 | enum coding_category category; |
8708 | Lisp_Object spec, attrs; | |
6b89e3aa | 8709 | |
df7492f9 KH |
8710 | CHECK_CODING_SYSTEM_GET_SPEC (args[i], spec); |
8711 | attrs = AREF (spec, 0); | |
8712 | category = XINT (CODING_ATTR_CATEGORY (attrs)); | |
8713 | if (changed[category]) | |
8714 | /* Ignore this coding system because a coding system of the | |
8715 | same category already had a higher priority. */ | |
8716 | continue; | |
8717 | changed[category] = 1; | |
8718 | priorities[j++] = category; | |
8719 | if (coding_categories[category].id >= 0 | |
8720 | && ! EQ (args[i], CODING_ID_NAME (coding_categories[category].id))) | |
8721 | setup_coding_system (args[i], &coding_categories[category]); | |
ff563fce | 8722 | Fset (AREF (Vcoding_category_table, category), args[i]); |
df7492f9 | 8723 | } |
6b89e3aa | 8724 | |
df7492f9 KH |
8725 | /* Now we have decided top J priorities. Reflect the order of the |
8726 | original priorities to the remaining priorities. */ | |
6b89e3aa | 8727 | |
df7492f9 | 8728 | for (i = j, j = 0; i < coding_category_max; i++, j++) |
6b89e3aa | 8729 | { |
df7492f9 KH |
8730 | while (j < coding_category_max |
8731 | && changed[coding_priorities[j]]) | |
8732 | j++; | |
8733 | if (j == coding_category_max) | |
8734 | abort (); | |
8735 | priorities[i] = coding_priorities[j]; | |
8736 | } | |
6b89e3aa | 8737 | |
df7492f9 | 8738 | bcopy (priorities, coding_priorities, sizeof priorities); |
177c0ea7 | 8739 | |
ff563fce KH |
8740 | /* Update `coding-category-list'. */ |
8741 | Vcoding_category_list = Qnil; | |
8742 | for (i = coding_category_max - 1; i >= 0; i--) | |
8743 | Vcoding_category_list | |
8744 | = Fcons (AREF (Vcoding_category_table, priorities[i]), | |
8745 | Vcoding_category_list); | |
6b89e3aa | 8746 | |
df7492f9 | 8747 | return Qnil; |
6b89e3aa KH |
8748 | } |
8749 | ||
df7492f9 KH |
8750 | DEFUN ("coding-system-priority-list", Fcoding_system_priority_list, |
8751 | Scoding_system_priority_list, 0, 1, 0, | |
da7db224 DL |
8752 | doc: /* Return a list of coding systems ordered by their priorities. |
8753 | HIGHESTP non-nil means just return the highest priority one. */) | |
df7492f9 KH |
8754 | (highestp) |
8755 | Lisp_Object highestp; | |
d46c5b12 KH |
8756 | { |
8757 | int i; | |
df7492f9 | 8758 | Lisp_Object val; |
6b89e3aa | 8759 | |
df7492f9 | 8760 | for (i = 0, val = Qnil; i < coding_category_max; i++) |
d46c5b12 | 8761 | { |
df7492f9 KH |
8762 | enum coding_category category = coding_priorities[i]; |
8763 | int id = coding_categories[category].id; | |
8764 | Lisp_Object attrs; | |
068a9dbd | 8765 | |
df7492f9 KH |
8766 | if (id < 0) |
8767 | continue; | |
8768 | attrs = CODING_ID_ATTRS (id); | |
8769 | if (! NILP (highestp)) | |
8770 | return CODING_ATTR_BASE_NAME (attrs); | |
8771 | val = Fcons (CODING_ATTR_BASE_NAME (attrs), val); | |
8772 | } | |
8773 | return Fnreverse (val); | |
8774 | } | |
068a9dbd | 8775 | |
f0064e1f | 8776 | static char *suffixes[] = { "-unix", "-dos", "-mac" }; |
068a9dbd KH |
8777 | |
8778 | static Lisp_Object | |
df7492f9 KH |
8779 | make_subsidiaries (base) |
8780 | Lisp_Object base; | |
068a9dbd | 8781 | { |
df7492f9 | 8782 | Lisp_Object subsidiaries; |
8f924df7 | 8783 | int base_name_len = SBYTES (SYMBOL_NAME (base)); |
df7492f9 KH |
8784 | char *buf = (char *) alloca (base_name_len + 6); |
8785 | int i; | |
068a9dbd | 8786 | |
8f924df7 | 8787 | bcopy (SDATA (SYMBOL_NAME (base)), buf, base_name_len); |
df7492f9 KH |
8788 | subsidiaries = Fmake_vector (make_number (3), Qnil); |
8789 | for (i = 0; i < 3; i++) | |
068a9dbd | 8790 | { |
df7492f9 KH |
8791 | bcopy (suffixes[i], buf + base_name_len, strlen (suffixes[i]) + 1); |
8792 | ASET (subsidiaries, i, intern (buf)); | |
068a9dbd | 8793 | } |
df7492f9 | 8794 | return subsidiaries; |
068a9dbd KH |
8795 | } |
8796 | ||
8797 | ||
df7492f9 KH |
8798 | DEFUN ("define-coding-system-internal", Fdefine_coding_system_internal, |
8799 | Sdefine_coding_system_internal, coding_arg_max, MANY, 0, | |
1fcd6c8b DL |
8800 | doc: /* For internal use only. |
8801 | usage: (define-coding-system-internal ...) */) | |
df7492f9 KH |
8802 | (nargs, args) |
8803 | int nargs; | |
8804 | Lisp_Object *args; | |
068a9dbd | 8805 | { |
df7492f9 KH |
8806 | Lisp_Object name; |
8807 | Lisp_Object spec_vec; /* [ ATTRS ALIASE EOL_TYPE ] */ | |
8808 | Lisp_Object attrs; /* Vector of attributes. */ | |
8809 | Lisp_Object eol_type; | |
8810 | Lisp_Object aliases; | |
8811 | Lisp_Object coding_type, charset_list, safe_charsets; | |
8812 | enum coding_category category; | |
8813 | Lisp_Object tail, val; | |
8814 | int max_charset_id = 0; | |
8815 | int i; | |
068a9dbd | 8816 | |
df7492f9 KH |
8817 | if (nargs < coding_arg_max) |
8818 | goto short_args; | |
068a9dbd | 8819 | |
df7492f9 | 8820 | attrs = Fmake_vector (make_number (coding_attr_last_index), Qnil); |
068a9dbd | 8821 | |
df7492f9 KH |
8822 | name = args[coding_arg_name]; |
8823 | CHECK_SYMBOL (name); | |
8824 | CODING_ATTR_BASE_NAME (attrs) = name; | |
068a9dbd | 8825 | |
df7492f9 KH |
8826 | val = args[coding_arg_mnemonic]; |
8827 | if (! STRINGP (val)) | |
8828 | CHECK_CHARACTER (val); | |
8829 | CODING_ATTR_MNEMONIC (attrs) = val; | |
068a9dbd | 8830 | |
df7492f9 KH |
8831 | coding_type = args[coding_arg_coding_type]; |
8832 | CHECK_SYMBOL (coding_type); | |
8833 | CODING_ATTR_TYPE (attrs) = coding_type; | |
068a9dbd | 8834 | |
df7492f9 KH |
8835 | charset_list = args[coding_arg_charset_list]; |
8836 | if (SYMBOLP (charset_list)) | |
8837 | { | |
8838 | if (EQ (charset_list, Qiso_2022)) | |
8839 | { | |
8840 | if (! EQ (coding_type, Qiso_2022)) | |
8841 | error ("Invalid charset-list"); | |
8842 | charset_list = Viso_2022_charset_list; | |
8843 | } | |
8844 | else if (EQ (charset_list, Qemacs_mule)) | |
8845 | { | |
8846 | if (! EQ (coding_type, Qemacs_mule)) | |
8847 | error ("Invalid charset-list"); | |
8848 | charset_list = Vemacs_mule_charset_list; | |
8849 | } | |
8850 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
8851 | if (max_charset_id < XFASTINT (XCAR (tail))) | |
8852 | max_charset_id = XFASTINT (XCAR (tail)); | |
8853 | } | |
068a9dbd KH |
8854 | else |
8855 | { | |
df7492f9 | 8856 | charset_list = Fcopy_sequence (charset_list); |
985773c9 | 8857 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) |
068a9dbd | 8858 | { |
df7492f9 KH |
8859 | struct charset *charset; |
8860 | ||
985773c9 | 8861 | val = XCAR (tail); |
df7492f9 KH |
8862 | CHECK_CHARSET_GET_CHARSET (val, charset); |
8863 | if (EQ (coding_type, Qiso_2022) | |
8864 | ? CHARSET_ISO_FINAL (charset) < 0 | |
8865 | : EQ (coding_type, Qemacs_mule) | |
8866 | ? CHARSET_EMACS_MULE_ID (charset) < 0 | |
8867 | : 0) | |
8868 | error ("Can't handle charset `%s'", | |
8f924df7 | 8869 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
df7492f9 | 8870 | |
8f924df7 | 8871 | XSETCAR (tail, make_number (charset->id)); |
df7492f9 KH |
8872 | if (max_charset_id < charset->id) |
8873 | max_charset_id = charset->id; | |
068a9dbd KH |
8874 | } |
8875 | } | |
df7492f9 | 8876 | CODING_ATTR_CHARSET_LIST (attrs) = charset_list; |
068a9dbd | 8877 | |
df7492f9 KH |
8878 | safe_charsets = Fmake_string (make_number (max_charset_id + 1), |
8879 | make_number (255)); | |
8880 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
8f924df7 | 8881 | SSET (safe_charsets, XFASTINT (XCAR (tail)), 0); |
df7492f9 | 8882 | CODING_ATTR_SAFE_CHARSETS (attrs) = safe_charsets; |
068a9dbd | 8883 | |
584948ac | 8884 | CODING_ATTR_ASCII_COMPAT (attrs) = args[coding_arg_ascii_compatible_p]; |
3a73fa5d | 8885 | |
df7492f9 | 8886 | val = args[coding_arg_decode_translation_table]; |
a6f87d34 | 8887 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) |
7d64c6ad | 8888 | CHECK_SYMBOL (val); |
df7492f9 | 8889 | CODING_ATTR_DECODE_TBL (attrs) = val; |
3a73fa5d | 8890 | |
df7492f9 | 8891 | val = args[coding_arg_encode_translation_table]; |
a6f87d34 | 8892 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) |
7d64c6ad | 8893 | CHECK_SYMBOL (val); |
df7492f9 | 8894 | CODING_ATTR_ENCODE_TBL (attrs) = val; |
d46c5b12 | 8895 | |
df7492f9 KH |
8896 | val = args[coding_arg_post_read_conversion]; |
8897 | CHECK_SYMBOL (val); | |
8898 | CODING_ATTR_POST_READ (attrs) = val; | |
d46c5b12 | 8899 | |
df7492f9 KH |
8900 | val = args[coding_arg_pre_write_conversion]; |
8901 | CHECK_SYMBOL (val); | |
8902 | CODING_ATTR_PRE_WRITE (attrs) = val; | |
3a73fa5d | 8903 | |
df7492f9 KH |
8904 | val = args[coding_arg_default_char]; |
8905 | if (NILP (val)) | |
8906 | CODING_ATTR_DEFAULT_CHAR (attrs) = make_number (' '); | |
8907 | else | |
8908 | { | |
8f924df7 | 8909 | CHECK_CHARACTER (val); |
df7492f9 KH |
8910 | CODING_ATTR_DEFAULT_CHAR (attrs) = val; |
8911 | } | |
4031e2bf | 8912 | |
8f924df7 KH |
8913 | val = args[coding_arg_for_unibyte]; |
8914 | CODING_ATTR_FOR_UNIBYTE (attrs) = NILP (val) ? Qnil : Qt; | |
3a73fa5d | 8915 | |
df7492f9 KH |
8916 | val = args[coding_arg_plist]; |
8917 | CHECK_LIST (val); | |
8918 | CODING_ATTR_PLIST (attrs) = val; | |
3a73fa5d | 8919 | |
df7492f9 KH |
8920 | if (EQ (coding_type, Qcharset)) |
8921 | { | |
c7c66a95 KH |
8922 | /* Generate a lisp vector of 256 elements. Each element is nil, |
8923 | integer, or a list of charset IDs. | |
3a73fa5d | 8924 | |
c7c66a95 KH |
8925 | If Nth element is nil, the byte code N is invalid in this |
8926 | coding system. | |
4ed46869 | 8927 | |
c7c66a95 KH |
8928 | If Nth element is a number NUM, N is the first byte of a |
8929 | charset whose ID is NUM. | |
4ed46869 | 8930 | |
c7c66a95 KH |
8931 | If Nth element is a list of charset IDs, N is the first byte |
8932 | of one of them. The list is sorted by dimensions of the | |
2bc515e4 | 8933 | charsets. A charset of smaller dimension comes firtst. */ |
df7492f9 | 8934 | val = Fmake_vector (make_number (256), Qnil); |
4ed46869 | 8935 | |
5c99c2e6 | 8936 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) |
df7492f9 | 8937 | { |
c7c66a95 KH |
8938 | struct charset *charset = CHARSET_FROM_ID (XFASTINT (XCAR (tail))); |
8939 | int dim = CHARSET_DIMENSION (charset); | |
8940 | int idx = (dim - 1) * 4; | |
4ed46869 | 8941 | |
5c99c2e6 | 8942 | if (CHARSET_ASCII_COMPATIBLE_P (charset)) |
584948ac | 8943 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; |
4031e2bf | 8944 | |
15d143f7 KH |
8945 | for (i = charset->code_space[idx]; |
8946 | i <= charset->code_space[idx + 1]; i++) | |
8947 | { | |
c7c66a95 KH |
8948 | Lisp_Object tmp, tmp2; |
8949 | int dim2; | |
ec6d2bb8 | 8950 | |
c7c66a95 KH |
8951 | tmp = AREF (val, i); |
8952 | if (NILP (tmp)) | |
8953 | tmp = XCAR (tail); | |
8954 | else if (NUMBERP (tmp)) | |
8955 | { | |
8956 | dim2 = CHARSET_DIMENSION (CHARSET_FROM_ID (XFASTINT (tmp))); | |
8957 | if (dim < dim2) | |
c7c66a95 | 8958 | tmp = Fcons (XCAR (tail), Fcons (tmp, Qnil)); |
f9d71dcd KH |
8959 | else |
8960 | tmp = Fcons (tmp, Fcons (XCAR (tail), Qnil)); | |
c7c66a95 | 8961 | } |
15d143f7 | 8962 | else |
c7c66a95 KH |
8963 | { |
8964 | for (tmp2 = tmp; CONSP (tmp2); tmp2 = XCDR (tmp2)) | |
8965 | { | |
8966 | dim2 = CHARSET_DIMENSION (CHARSET_FROM_ID (XFASTINT (XCAR (tmp2)))); | |
8967 | if (dim < dim2) | |
8968 | break; | |
8969 | } | |
8970 | if (NILP (tmp2)) | |
8971 | tmp = nconc2 (tmp, Fcons (XCAR (tail), Qnil)); | |
8972 | else | |
8973 | { | |
8974 | XSETCDR (tmp2, Fcons (XCAR (tmp2), XCDR (tmp2))); | |
8975 | XSETCAR (tmp2, XCAR (tail)); | |
8976 | } | |
8977 | } | |
8978 | ASET (val, i, tmp); | |
15d143f7 | 8979 | } |
df7492f9 KH |
8980 | } |
8981 | ASET (attrs, coding_attr_charset_valids, val); | |
8982 | category = coding_category_charset; | |
8983 | } | |
8984 | else if (EQ (coding_type, Qccl)) | |
8985 | { | |
8986 | Lisp_Object valids; | |
ecec61c1 | 8987 | |
df7492f9 KH |
8988 | if (nargs < coding_arg_ccl_max) |
8989 | goto short_args; | |
ecec61c1 | 8990 | |
df7492f9 KH |
8991 | val = args[coding_arg_ccl_decoder]; |
8992 | CHECK_CCL_PROGRAM (val); | |
8993 | if (VECTORP (val)) | |
8994 | val = Fcopy_sequence (val); | |
8995 | ASET (attrs, coding_attr_ccl_decoder, val); | |
ecec61c1 | 8996 | |
df7492f9 KH |
8997 | val = args[coding_arg_ccl_encoder]; |
8998 | CHECK_CCL_PROGRAM (val); | |
8999 | if (VECTORP (val)) | |
9000 | val = Fcopy_sequence (val); | |
9001 | ASET (attrs, coding_attr_ccl_encoder, val); | |
ecec61c1 | 9002 | |
df7492f9 KH |
9003 | val = args[coding_arg_ccl_valids]; |
9004 | valids = Fmake_string (make_number (256), make_number (0)); | |
9005 | for (tail = val; !NILP (tail); tail = Fcdr (tail)) | |
9006 | { | |
8dcbea82 | 9007 | int from, to; |
ecec61c1 | 9008 | |
df7492f9 KH |
9009 | val = Fcar (tail); |
9010 | if (INTEGERP (val)) | |
8dcbea82 KH |
9011 | { |
9012 | from = to = XINT (val); | |
9013 | if (from < 0 || from > 255) | |
9014 | args_out_of_range_3 (val, make_number (0), make_number (255)); | |
9015 | } | |
df7492f9 KH |
9016 | else |
9017 | { | |
df7492f9 | 9018 | CHECK_CONS (val); |
8f924df7 KH |
9019 | CHECK_NATNUM_CAR (val); |
9020 | CHECK_NATNUM_CDR (val); | |
df7492f9 | 9021 | from = XINT (XCAR (val)); |
8f924df7 | 9022 | if (from > 255) |
8dcbea82 KH |
9023 | args_out_of_range_3 (XCAR (val), |
9024 | make_number (0), make_number (255)); | |
df7492f9 | 9025 | to = XINT (XCDR (val)); |
8dcbea82 KH |
9026 | if (to < from || to > 255) |
9027 | args_out_of_range_3 (XCDR (val), | |
9028 | XCAR (val), make_number (255)); | |
df7492f9 | 9029 | } |
8dcbea82 | 9030 | for (i = from; i <= to; i++) |
8f924df7 | 9031 | SSET (valids, i, 1); |
df7492f9 KH |
9032 | } |
9033 | ASET (attrs, coding_attr_ccl_valids, valids); | |
4ed46869 | 9034 | |
df7492f9 | 9035 | category = coding_category_ccl; |
55ab7be3 | 9036 | } |
df7492f9 | 9037 | else if (EQ (coding_type, Qutf_16)) |
55ab7be3 | 9038 | { |
df7492f9 | 9039 | Lisp_Object bom, endian; |
4ed46869 | 9040 | |
584948ac | 9041 | CODING_ATTR_ASCII_COMPAT (attrs) = Qnil; |
4ed46869 | 9042 | |
df7492f9 KH |
9043 | if (nargs < coding_arg_utf16_max) |
9044 | goto short_args; | |
4ed46869 | 9045 | |
df7492f9 KH |
9046 | bom = args[coding_arg_utf16_bom]; |
9047 | if (! NILP (bom) && ! EQ (bom, Qt)) | |
9048 | { | |
9049 | CHECK_CONS (bom); | |
8f924df7 KH |
9050 | val = XCAR (bom); |
9051 | CHECK_CODING_SYSTEM (val); | |
9052 | val = XCDR (bom); | |
9053 | CHECK_CODING_SYSTEM (val); | |
df7492f9 KH |
9054 | } |
9055 | ASET (attrs, coding_attr_utf_16_bom, bom); | |
9056 | ||
9057 | endian = args[coding_arg_utf16_endian]; | |
b49a1807 KH |
9058 | CHECK_SYMBOL (endian); |
9059 | if (NILP (endian)) | |
9060 | endian = Qbig; | |
9061 | else if (! EQ (endian, Qbig) && ! EQ (endian, Qlittle)) | |
8f924df7 | 9062 | error ("Invalid endian: %s", SDATA (SYMBOL_NAME (endian))); |
df7492f9 KH |
9063 | ASET (attrs, coding_attr_utf_16_endian, endian); |
9064 | ||
9065 | category = (CONSP (bom) | |
9066 | ? coding_category_utf_16_auto | |
9067 | : NILP (bom) | |
b49a1807 | 9068 | ? (EQ (endian, Qbig) |
df7492f9 KH |
9069 | ? coding_category_utf_16_be_nosig |
9070 | : coding_category_utf_16_le_nosig) | |
b49a1807 | 9071 | : (EQ (endian, Qbig) |
df7492f9 KH |
9072 | ? coding_category_utf_16_be |
9073 | : coding_category_utf_16_le)); | |
9074 | } | |
9075 | else if (EQ (coding_type, Qiso_2022)) | |
9076 | { | |
9077 | Lisp_Object initial, reg_usage, request, flags; | |
4776e638 | 9078 | int i; |
1397dc18 | 9079 | |
df7492f9 KH |
9080 | if (nargs < coding_arg_iso2022_max) |
9081 | goto short_args; | |
9082 | ||
9083 | initial = Fcopy_sequence (args[coding_arg_iso2022_initial]); | |
9084 | CHECK_VECTOR (initial); | |
9085 | for (i = 0; i < 4; i++) | |
9086 | { | |
9087 | val = Faref (initial, make_number (i)); | |
9088 | if (! NILP (val)) | |
9089 | { | |
584948ac KH |
9090 | struct charset *charset; |
9091 | ||
9092 | CHECK_CHARSET_GET_CHARSET (val, charset); | |
9093 | ASET (initial, i, make_number (CHARSET_ID (charset))); | |
9094 | if (i == 0 && CHARSET_ASCII_COMPATIBLE_P (charset)) | |
9095 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
df7492f9 KH |
9096 | } |
9097 | else | |
9098 | ASET (initial, i, make_number (-1)); | |
9099 | } | |
9100 | ||
9101 | reg_usage = args[coding_arg_iso2022_reg_usage]; | |
9102 | CHECK_CONS (reg_usage); | |
8f924df7 KH |
9103 | CHECK_NUMBER_CAR (reg_usage); |
9104 | CHECK_NUMBER_CDR (reg_usage); | |
df7492f9 KH |
9105 | |
9106 | request = Fcopy_sequence (args[coding_arg_iso2022_request]); | |
9107 | for (tail = request; ! NILP (tail); tail = Fcdr (tail)) | |
1397dc18 | 9108 | { |
df7492f9 | 9109 | int id; |
8f924df7 | 9110 | Lisp_Object tmp; |
df7492f9 KH |
9111 | |
9112 | val = Fcar (tail); | |
9113 | CHECK_CONS (val); | |
8f924df7 KH |
9114 | tmp = XCAR (val); |
9115 | CHECK_CHARSET_GET_ID (tmp, id); | |
9116 | CHECK_NATNUM_CDR (val); | |
df7492f9 KH |
9117 | if (XINT (XCDR (val)) >= 4) |
9118 | error ("Invalid graphic register number: %d", XINT (XCDR (val))); | |
8f924df7 | 9119 | XSETCAR (val, make_number (id)); |
1397dc18 | 9120 | } |
4ed46869 | 9121 | |
df7492f9 KH |
9122 | flags = args[coding_arg_iso2022_flags]; |
9123 | CHECK_NATNUM (flags); | |
9124 | i = XINT (flags); | |
9125 | if (EQ (args[coding_arg_charset_list], Qiso_2022)) | |
9126 | flags = make_number (i | CODING_ISO_FLAG_FULL_SUPPORT); | |
9127 | ||
9128 | ASET (attrs, coding_attr_iso_initial, initial); | |
9129 | ASET (attrs, coding_attr_iso_usage, reg_usage); | |
9130 | ASET (attrs, coding_attr_iso_request, request); | |
9131 | ASET (attrs, coding_attr_iso_flags, flags); | |
9132 | setup_iso_safe_charsets (attrs); | |
9133 | ||
9134 | if (i & CODING_ISO_FLAG_SEVEN_BITS) | |
9135 | category = ((i & (CODING_ISO_FLAG_LOCKING_SHIFT | |
9136 | | CODING_ISO_FLAG_SINGLE_SHIFT)) | |
9137 | ? coding_category_iso_7_else | |
9138 | : EQ (args[coding_arg_charset_list], Qiso_2022) | |
9139 | ? coding_category_iso_7 | |
9140 | : coding_category_iso_7_tight); | |
9141 | else | |
9142 | { | |
9143 | int id = XINT (AREF (initial, 1)); | |
9144 | ||
c6fb6e98 | 9145 | category = (((i & CODING_ISO_FLAG_LOCKING_SHIFT) |
df7492f9 KH |
9146 | || EQ (args[coding_arg_charset_list], Qiso_2022) |
9147 | || id < 0) | |
9148 | ? coding_category_iso_8_else | |
9149 | : (CHARSET_DIMENSION (CHARSET_FROM_ID (id)) == 1) | |
9150 | ? coding_category_iso_8_1 | |
9151 | : coding_category_iso_8_2); | |
9152 | } | |
0ce7886f KH |
9153 | if (category != coding_category_iso_8_1 |
9154 | && category != coding_category_iso_8_2) | |
9155 | CODING_ATTR_ASCII_COMPAT (attrs) = Qnil; | |
df7492f9 KH |
9156 | } |
9157 | else if (EQ (coding_type, Qemacs_mule)) | |
c28a9453 | 9158 | { |
df7492f9 KH |
9159 | if (EQ (args[coding_arg_charset_list], Qemacs_mule)) |
9160 | ASET (attrs, coding_attr_emacs_mule_full, Qt); | |
584948ac | 9161 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; |
df7492f9 | 9162 | category = coding_category_emacs_mule; |
c28a9453 | 9163 | } |
df7492f9 | 9164 | else if (EQ (coding_type, Qshift_jis)) |
c28a9453 | 9165 | { |
df7492f9 KH |
9166 | |
9167 | struct charset *charset; | |
9168 | ||
7d64c6ad | 9169 | if (XINT (Flength (charset_list)) != 3 |
6e07c25f | 9170 | && XINT (Flength (charset_list)) != 4) |
7d64c6ad | 9171 | error ("There should be three or four charsets"); |
df7492f9 KH |
9172 | |
9173 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9174 | if (CHARSET_DIMENSION (charset) != 1) | |
9175 | error ("Dimension of charset %s is not one", | |
8f924df7 | 9176 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
584948ac KH |
9177 | if (CHARSET_ASCII_COMPATIBLE_P (charset)) |
9178 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
df7492f9 KH |
9179 | |
9180 | charset_list = XCDR (charset_list); | |
9181 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9182 | if (CHARSET_DIMENSION (charset) != 1) | |
9183 | error ("Dimension of charset %s is not one", | |
8f924df7 | 9184 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
df7492f9 KH |
9185 | |
9186 | charset_list = XCDR (charset_list); | |
9187 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9188 | if (CHARSET_DIMENSION (charset) != 2) | |
7d64c6ad KH |
9189 | error ("Dimension of charset %s is not two", |
9190 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); | |
9191 | ||
9192 | charset_list = XCDR (charset_list); | |
2b917a06 KH |
9193 | if (! NILP (charset_list)) |
9194 | { | |
9195 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9196 | if (CHARSET_DIMENSION (charset) != 2) | |
9197 | error ("Dimension of charset %s is not two", | |
9198 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); | |
9199 | } | |
df7492f9 KH |
9200 | |
9201 | category = coding_category_sjis; | |
9202 | Vsjis_coding_system = name; | |
c28a9453 | 9203 | } |
df7492f9 KH |
9204 | else if (EQ (coding_type, Qbig5)) |
9205 | { | |
9206 | struct charset *charset; | |
4ed46869 | 9207 | |
df7492f9 KH |
9208 | if (XINT (Flength (charset_list)) != 2) |
9209 | error ("There should be just two charsets"); | |
9210 | ||
9211 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9212 | if (CHARSET_DIMENSION (charset) != 1) | |
9213 | error ("Dimension of charset %s is not one", | |
8f924df7 | 9214 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
584948ac KH |
9215 | if (CHARSET_ASCII_COMPATIBLE_P (charset)) |
9216 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
df7492f9 KH |
9217 | |
9218 | charset_list = XCDR (charset_list); | |
9219 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9220 | if (CHARSET_DIMENSION (charset) != 2) | |
9221 | error ("Dimension of charset %s is not two", | |
8f924df7 | 9222 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
4ed46869 | 9223 | |
df7492f9 KH |
9224 | category = coding_category_big5; |
9225 | Vbig5_coding_system = name; | |
9226 | } | |
9227 | else if (EQ (coding_type, Qraw_text)) | |
c28a9453 | 9228 | { |
584948ac KH |
9229 | category = coding_category_raw_text; |
9230 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
c28a9453 | 9231 | } |
df7492f9 | 9232 | else if (EQ (coding_type, Qutf_8)) |
4ed46869 | 9233 | { |
584948ac KH |
9234 | category = coding_category_utf_8; |
9235 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
4ed46869 | 9236 | } |
df7492f9 KH |
9237 | else if (EQ (coding_type, Qundecided)) |
9238 | category = coding_category_undecided; | |
4ed46869 | 9239 | else |
df7492f9 | 9240 | error ("Invalid coding system type: %s", |
8f924df7 | 9241 | SDATA (SYMBOL_NAME (coding_type))); |
4ed46869 | 9242 | |
df7492f9 | 9243 | CODING_ATTR_CATEGORY (attrs) = make_number (category); |
01378f49 KH |
9244 | CODING_ATTR_PLIST (attrs) |
9245 | = Fcons (QCcategory, Fcons (AREF (Vcoding_category_table, category), | |
9246 | CODING_ATTR_PLIST (attrs))); | |
35befdaa KH |
9247 | CODING_ATTR_PLIST (attrs) |
9248 | = Fcons (QCascii_compatible_p, | |
9249 | Fcons (CODING_ATTR_ASCII_COMPAT (attrs), | |
9250 | CODING_ATTR_PLIST (attrs))); | |
c4825358 | 9251 | |
df7492f9 KH |
9252 | eol_type = args[coding_arg_eol_type]; |
9253 | if (! NILP (eol_type) | |
9254 | && ! EQ (eol_type, Qunix) | |
9255 | && ! EQ (eol_type, Qdos) | |
9256 | && ! EQ (eol_type, Qmac)) | |
9257 | error ("Invalid eol-type"); | |
4ed46869 | 9258 | |
df7492f9 | 9259 | aliases = Fcons (name, Qnil); |
4ed46869 | 9260 | |
df7492f9 KH |
9261 | if (NILP (eol_type)) |
9262 | { | |
9263 | eol_type = make_subsidiaries (name); | |
9264 | for (i = 0; i < 3; i++) | |
1397dc18 | 9265 | { |
df7492f9 KH |
9266 | Lisp_Object this_spec, this_name, this_aliases, this_eol_type; |
9267 | ||
9268 | this_name = AREF (eol_type, i); | |
9269 | this_aliases = Fcons (this_name, Qnil); | |
9270 | this_eol_type = (i == 0 ? Qunix : i == 1 ? Qdos : Qmac); | |
9271 | this_spec = Fmake_vector (make_number (3), attrs); | |
9272 | ASET (this_spec, 1, this_aliases); | |
9273 | ASET (this_spec, 2, this_eol_type); | |
9274 | Fputhash (this_name, this_spec, Vcoding_system_hash_table); | |
9275 | Vcoding_system_list = Fcons (this_name, Vcoding_system_list); | |
583f71ca KH |
9276 | val = Fassoc (Fsymbol_name (this_name), Vcoding_system_alist); |
9277 | if (NILP (val)) | |
9278 | Vcoding_system_alist | |
9279 | = Fcons (Fcons (Fsymbol_name (this_name), Qnil), | |
9280 | Vcoding_system_alist); | |
1397dc18 | 9281 | } |
d46c5b12 | 9282 | } |
4ed46869 | 9283 | |
df7492f9 KH |
9284 | spec_vec = Fmake_vector (make_number (3), attrs); |
9285 | ASET (spec_vec, 1, aliases); | |
9286 | ASET (spec_vec, 2, eol_type); | |
48b0f3ae | 9287 | |
df7492f9 KH |
9288 | Fputhash (name, spec_vec, Vcoding_system_hash_table); |
9289 | Vcoding_system_list = Fcons (name, Vcoding_system_list); | |
583f71ca KH |
9290 | val = Fassoc (Fsymbol_name (name), Vcoding_system_alist); |
9291 | if (NILP (val)) | |
9292 | Vcoding_system_alist = Fcons (Fcons (Fsymbol_name (name), Qnil), | |
9293 | Vcoding_system_alist); | |
48b0f3ae | 9294 | |
df7492f9 KH |
9295 | { |
9296 | int id = coding_categories[category].id; | |
48b0f3ae | 9297 | |
df7492f9 KH |
9298 | if (id < 0 || EQ (name, CODING_ID_NAME (id))) |
9299 | setup_coding_system (name, &coding_categories[category]); | |
9300 | } | |
48b0f3ae | 9301 | |
d46c5b12 | 9302 | return Qnil; |
48b0f3ae | 9303 | |
df7492f9 KH |
9304 | short_args: |
9305 | return Fsignal (Qwrong_number_of_arguments, | |
9306 | Fcons (intern ("define-coding-system-internal"), | |
9307 | make_number (nargs))); | |
d46c5b12 | 9308 | } |
4ed46869 | 9309 | |
d6925f38 | 9310 | |
a6f87d34 KH |
9311 | DEFUN ("coding-system-put", Fcoding_system_put, Scoding_system_put, |
9312 | 3, 3, 0, | |
9313 | doc: /* Change value in CODING-SYSTEM's property list PROP to VAL. */) | |
9314 | (coding_system, prop, val) | |
9315 | Lisp_Object coding_system, prop, val; | |
9316 | { | |
3dbe7859 | 9317 | Lisp_Object spec, attrs; |
a6f87d34 KH |
9318 | |
9319 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
9320 | attrs = AREF (spec, 0); | |
9321 | if (EQ (prop, QCmnemonic)) | |
9322 | { | |
9323 | if (! STRINGP (val)) | |
9324 | CHECK_CHARACTER (val); | |
9325 | CODING_ATTR_MNEMONIC (attrs) = val; | |
9326 | } | |
9327 | else if (EQ (prop, QCdefalut_char)) | |
9328 | { | |
9329 | if (NILP (val)) | |
9330 | val = make_number (' '); | |
9331 | else | |
9332 | CHECK_CHARACTER (val); | |
9333 | CODING_ATTR_DEFAULT_CHAR (attrs) = val; | |
9334 | } | |
9335 | else if (EQ (prop, QCdecode_translation_table)) | |
9336 | { | |
9337 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) | |
9338 | CHECK_SYMBOL (val); | |
9339 | CODING_ATTR_DECODE_TBL (attrs) = val; | |
9340 | } | |
9341 | else if (EQ (prop, QCencode_translation_table)) | |
9342 | { | |
9343 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) | |
9344 | CHECK_SYMBOL (val); | |
9345 | CODING_ATTR_ENCODE_TBL (attrs) = val; | |
9346 | } | |
9347 | else if (EQ (prop, QCpost_read_conversion)) | |
9348 | { | |
9349 | CHECK_SYMBOL (val); | |
9350 | CODING_ATTR_POST_READ (attrs) = val; | |
9351 | } | |
9352 | else if (EQ (prop, QCpre_write_conversion)) | |
9353 | { | |
9354 | CHECK_SYMBOL (val); | |
9355 | CODING_ATTR_PRE_WRITE (attrs) = val; | |
9356 | } | |
35befdaa KH |
9357 | else if (EQ (prop, QCascii_compatible_p)) |
9358 | { | |
9359 | CODING_ATTR_ASCII_COMPAT (attrs) = val; | |
9360 | } | |
a6f87d34 KH |
9361 | |
9362 | CODING_ATTR_PLIST (attrs) | |
9363 | = Fplist_put (CODING_ATTR_PLIST (attrs), prop, val); | |
9364 | return val; | |
9365 | } | |
9366 | ||
9367 | ||
df7492f9 KH |
9368 | DEFUN ("define-coding-system-alias", Fdefine_coding_system_alias, |
9369 | Sdefine_coding_system_alias, 2, 2, 0, | |
9370 | doc: /* Define ALIAS as an alias for CODING-SYSTEM. */) | |
9371 | (alias, coding_system) | |
9372 | Lisp_Object alias, coding_system; | |
66cfb530 | 9373 | { |
583f71ca | 9374 | Lisp_Object spec, aliases, eol_type, val; |
4ed46869 | 9375 | |
df7492f9 KH |
9376 | CHECK_SYMBOL (alias); |
9377 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
9378 | aliases = AREF (spec, 1); | |
d6925f38 KH |
9379 | /* ALISES should be a list of length more than zero, and the first |
9380 | element is a base coding system. Append ALIAS at the tail of the | |
9381 | list. */ | |
df7492f9 KH |
9382 | while (!NILP (XCDR (aliases))) |
9383 | aliases = XCDR (aliases); | |
8f924df7 | 9384 | XSETCDR (aliases, Fcons (alias, Qnil)); |
4ed46869 | 9385 | |
df7492f9 KH |
9386 | eol_type = AREF (spec, 2); |
9387 | if (VECTORP (eol_type)) | |
4ed46869 | 9388 | { |
df7492f9 KH |
9389 | Lisp_Object subsidiaries; |
9390 | int i; | |
4ed46869 | 9391 | |
df7492f9 KH |
9392 | subsidiaries = make_subsidiaries (alias); |
9393 | for (i = 0; i < 3; i++) | |
9394 | Fdefine_coding_system_alias (AREF (subsidiaries, i), | |
9395 | AREF (eol_type, i)); | |
4ed46869 | 9396 | } |
df7492f9 KH |
9397 | |
9398 | Fputhash (alias, spec, Vcoding_system_hash_table); | |
d6925f38 | 9399 | Vcoding_system_list = Fcons (alias, Vcoding_system_list); |
583f71ca KH |
9400 | val = Fassoc (Fsymbol_name (alias), Vcoding_system_alist); |
9401 | if (NILP (val)) | |
9402 | Vcoding_system_alist = Fcons (Fcons (Fsymbol_name (alias), Qnil), | |
9403 | Vcoding_system_alist); | |
66cfb530 | 9404 | |
4ed46869 KH |
9405 | return Qnil; |
9406 | } | |
9407 | ||
df7492f9 KH |
9408 | DEFUN ("coding-system-base", Fcoding_system_base, Scoding_system_base, |
9409 | 1, 1, 0, | |
9410 | doc: /* Return the base of CODING-SYSTEM. | |
da7db224 | 9411 | Any alias or subsidiary coding system is not a base coding system. */) |
df7492f9 KH |
9412 | (coding_system) |
9413 | Lisp_Object coding_system; | |
d46c5b12 | 9414 | { |
df7492f9 | 9415 | Lisp_Object spec, attrs; |
d46c5b12 | 9416 | |
df7492f9 KH |
9417 | if (NILP (coding_system)) |
9418 | return (Qno_conversion); | |
9419 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
9420 | attrs = AREF (spec, 0); | |
9421 | return CODING_ATTR_BASE_NAME (attrs); | |
9422 | } | |
1397dc18 | 9423 | |
df7492f9 KH |
9424 | DEFUN ("coding-system-plist", Fcoding_system_plist, Scoding_system_plist, |
9425 | 1, 1, 0, | |
9426 | doc: "Return the property list of CODING-SYSTEM.") | |
9427 | (coding_system) | |
9428 | Lisp_Object coding_system; | |
9429 | { | |
9430 | Lisp_Object spec, attrs; | |
1397dc18 | 9431 | |
df7492f9 KH |
9432 | if (NILP (coding_system)) |
9433 | coding_system = Qno_conversion; | |
9434 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
9435 | attrs = AREF (spec, 0); | |
9436 | return CODING_ATTR_PLIST (attrs); | |
d46c5b12 KH |
9437 | } |
9438 | ||
df7492f9 KH |
9439 | |
9440 | DEFUN ("coding-system-aliases", Fcoding_system_aliases, Scoding_system_aliases, | |
9441 | 1, 1, 0, | |
da7db224 | 9442 | doc: /* Return the list of aliases of CODING-SYSTEM. */) |
df7492f9 KH |
9443 | (coding_system) |
9444 | Lisp_Object coding_system; | |
66cfb530 | 9445 | { |
df7492f9 | 9446 | Lisp_Object spec; |
84d60297 | 9447 | |
df7492f9 KH |
9448 | if (NILP (coding_system)) |
9449 | coding_system = Qno_conversion; | |
9450 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
da7db224 | 9451 | return AREF (spec, 1); |
df7492f9 | 9452 | } |
66cfb530 | 9453 | |
df7492f9 KH |
9454 | DEFUN ("coding-system-eol-type", Fcoding_system_eol_type, |
9455 | Scoding_system_eol_type, 1, 1, 0, | |
9456 | doc: /* Return eol-type of CODING-SYSTEM. | |
9457 | An eol-type is integer 0, 1, 2, or a vector of coding systems. | |
66cfb530 | 9458 | |
df7492f9 KH |
9459 | Integer values 0, 1, and 2 indicate a format of end-of-line; LF, CRLF, |
9460 | and CR respectively. | |
66cfb530 | 9461 | |
df7492f9 KH |
9462 | A vector value indicates that a format of end-of-line should be |
9463 | detected automatically. Nth element of the vector is the subsidiary | |
9464 | coding system whose eol-type is N. */) | |
6b89e3aa KH |
9465 | (coding_system) |
9466 | Lisp_Object coding_system; | |
9467 | { | |
df7492f9 KH |
9468 | Lisp_Object spec, eol_type; |
9469 | int n; | |
6b89e3aa | 9470 | |
df7492f9 KH |
9471 | if (NILP (coding_system)) |
9472 | coding_system = Qno_conversion; | |
9473 | if (! CODING_SYSTEM_P (coding_system)) | |
9474 | return Qnil; | |
9475 | spec = CODING_SYSTEM_SPEC (coding_system); | |
9476 | eol_type = AREF (spec, 2); | |
9477 | if (VECTORP (eol_type)) | |
9478 | return Fcopy_sequence (eol_type); | |
9479 | n = EQ (eol_type, Qunix) ? 0 : EQ (eol_type, Qdos) ? 1 : 2; | |
9480 | return make_number (n); | |
6b89e3aa KH |
9481 | } |
9482 | ||
4ed46869 KH |
9483 | #endif /* emacs */ |
9484 | ||
9485 | \f | |
1397dc18 | 9486 | /*** 9. Post-amble ***/ |
4ed46869 | 9487 | |
dfcf069d | 9488 | void |
4ed46869 KH |
9489 | init_coding_once () |
9490 | { | |
9491 | int i; | |
9492 | ||
df7492f9 KH |
9493 | for (i = 0; i < coding_category_max; i++) |
9494 | { | |
9495 | coding_categories[i].id = -1; | |
9496 | coding_priorities[i] = i; | |
9497 | } | |
4ed46869 KH |
9498 | |
9499 | /* ISO2022 specific initialize routine. */ | |
9500 | for (i = 0; i < 0x20; i++) | |
b73bfc1c | 9501 | iso_code_class[i] = ISO_control_0; |
4ed46869 KH |
9502 | for (i = 0x21; i < 0x7F; i++) |
9503 | iso_code_class[i] = ISO_graphic_plane_0; | |
9504 | for (i = 0x80; i < 0xA0; i++) | |
b73bfc1c | 9505 | iso_code_class[i] = ISO_control_1; |
4ed46869 KH |
9506 | for (i = 0xA1; i < 0xFF; i++) |
9507 | iso_code_class[i] = ISO_graphic_plane_1; | |
9508 | iso_code_class[0x20] = iso_code_class[0x7F] = ISO_0x20_or_0x7F; | |
9509 | iso_code_class[0xA0] = iso_code_class[0xFF] = ISO_0xA0_or_0xFF; | |
4ed46869 KH |
9510 | iso_code_class[ISO_CODE_SO] = ISO_shift_out; |
9511 | iso_code_class[ISO_CODE_SI] = ISO_shift_in; | |
9512 | iso_code_class[ISO_CODE_SS2_7] = ISO_single_shift_2_7; | |
9513 | iso_code_class[ISO_CODE_ESC] = ISO_escape; | |
9514 | iso_code_class[ISO_CODE_SS2] = ISO_single_shift_2; | |
9515 | iso_code_class[ISO_CODE_SS3] = ISO_single_shift_3; | |
9516 | iso_code_class[ISO_CODE_CSI] = ISO_control_sequence_introducer; | |
9517 | ||
df7492f9 KH |
9518 | for (i = 0; i < 256; i++) |
9519 | { | |
9520 | emacs_mule_bytes[i] = 1; | |
9521 | } | |
7c78e542 KH |
9522 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_11] = 3; |
9523 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_12] = 3; | |
9524 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_21] = 4; | |
9525 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_22] = 4; | |
e0e989f6 KH |
9526 | } |
9527 | ||
9528 | #ifdef emacs | |
9529 | ||
dfcf069d | 9530 | void |
e0e989f6 KH |
9531 | syms_of_coding () |
9532 | { | |
df7492f9 | 9533 | staticpro (&Vcoding_system_hash_table); |
8f924df7 KH |
9534 | { |
9535 | Lisp_Object args[2]; | |
9536 | args[0] = QCtest; | |
9537 | args[1] = Qeq; | |
9538 | Vcoding_system_hash_table = Fmake_hash_table (2, args); | |
9539 | } | |
df7492f9 KH |
9540 | |
9541 | staticpro (&Vsjis_coding_system); | |
9542 | Vsjis_coding_system = Qnil; | |
e0e989f6 | 9543 | |
df7492f9 KH |
9544 | staticpro (&Vbig5_coding_system); |
9545 | Vbig5_coding_system = Qnil; | |
9546 | ||
24a73b0a KH |
9547 | staticpro (&Vcode_conversion_reused_workbuf); |
9548 | Vcode_conversion_reused_workbuf = Qnil; | |
9549 | ||
9550 | staticpro (&Vcode_conversion_workbuf_name); | |
9551 | Vcode_conversion_workbuf_name = build_string (" *code-conversion-work*"); | |
e0e989f6 | 9552 | |
24a73b0a | 9553 | reused_workbuf_in_use = 0; |
df7492f9 KH |
9554 | |
9555 | DEFSYM (Qcharset, "charset"); | |
9556 | DEFSYM (Qtarget_idx, "target-idx"); | |
9557 | DEFSYM (Qcoding_system_history, "coding-system-history"); | |
bb0115a2 RS |
9558 | Fset (Qcoding_system_history, Qnil); |
9559 | ||
9ce27fde | 9560 | /* Target FILENAME is the first argument. */ |
e0e989f6 | 9561 | Fput (Qinsert_file_contents, Qtarget_idx, make_number (0)); |
9ce27fde | 9562 | /* Target FILENAME is the third argument. */ |
e0e989f6 KH |
9563 | Fput (Qwrite_region, Qtarget_idx, make_number (2)); |
9564 | ||
df7492f9 | 9565 | DEFSYM (Qcall_process, "call-process"); |
9ce27fde | 9566 | /* Target PROGRAM is the first argument. */ |
e0e989f6 KH |
9567 | Fput (Qcall_process, Qtarget_idx, make_number (0)); |
9568 | ||
df7492f9 | 9569 | DEFSYM (Qcall_process_region, "call-process-region"); |
9ce27fde | 9570 | /* Target PROGRAM is the third argument. */ |
e0e989f6 KH |
9571 | Fput (Qcall_process_region, Qtarget_idx, make_number (2)); |
9572 | ||
df7492f9 | 9573 | DEFSYM (Qstart_process, "start-process"); |
9ce27fde | 9574 | /* Target PROGRAM is the third argument. */ |
e0e989f6 KH |
9575 | Fput (Qstart_process, Qtarget_idx, make_number (2)); |
9576 | ||
df7492f9 | 9577 | DEFSYM (Qopen_network_stream, "open-network-stream"); |
9ce27fde | 9578 | /* Target SERVICE is the fourth argument. */ |
e0e989f6 KH |
9579 | Fput (Qopen_network_stream, Qtarget_idx, make_number (3)); |
9580 | ||
df7492f9 KH |
9581 | DEFSYM (Qcoding_system, "coding-system"); |
9582 | DEFSYM (Qcoding_aliases, "coding-aliases"); | |
4ed46869 | 9583 | |
df7492f9 KH |
9584 | DEFSYM (Qeol_type, "eol-type"); |
9585 | DEFSYM (Qunix, "unix"); | |
9586 | DEFSYM (Qdos, "dos"); | |
4ed46869 | 9587 | |
df7492f9 KH |
9588 | DEFSYM (Qbuffer_file_coding_system, "buffer-file-coding-system"); |
9589 | DEFSYM (Qpost_read_conversion, "post-read-conversion"); | |
9590 | DEFSYM (Qpre_write_conversion, "pre-write-conversion"); | |
9591 | DEFSYM (Qdefault_char, "default-char"); | |
9592 | DEFSYM (Qundecided, "undecided"); | |
9593 | DEFSYM (Qno_conversion, "no-conversion"); | |
9594 | DEFSYM (Qraw_text, "raw-text"); | |
4ed46869 | 9595 | |
df7492f9 | 9596 | DEFSYM (Qiso_2022, "iso-2022"); |
4ed46869 | 9597 | |
df7492f9 | 9598 | DEFSYM (Qutf_8, "utf-8"); |
8f924df7 | 9599 | DEFSYM (Qutf_8_emacs, "utf-8-emacs"); |
27901516 | 9600 | |
df7492f9 | 9601 | DEFSYM (Qutf_16, "utf-16"); |
df7492f9 KH |
9602 | DEFSYM (Qbig, "big"); |
9603 | DEFSYM (Qlittle, "little"); | |
27901516 | 9604 | |
df7492f9 KH |
9605 | DEFSYM (Qshift_jis, "shift-jis"); |
9606 | DEFSYM (Qbig5, "big5"); | |
4ed46869 | 9607 | |
df7492f9 | 9608 | DEFSYM (Qcoding_system_p, "coding-system-p"); |
4ed46869 | 9609 | |
df7492f9 | 9610 | DEFSYM (Qcoding_system_error, "coding-system-error"); |
4ed46869 KH |
9611 | Fput (Qcoding_system_error, Qerror_conditions, |
9612 | Fcons (Qcoding_system_error, Fcons (Qerror, Qnil))); | |
9613 | Fput (Qcoding_system_error, Qerror_message, | |
9ce27fde | 9614 | build_string ("Invalid coding system")); |
4ed46869 | 9615 | |
05e6f5dc KH |
9616 | /* Intern this now in case it isn't already done. |
9617 | Setting this variable twice is harmless. | |
9618 | But don't staticpro it here--that is done in alloc.c. */ | |
9619 | Qchar_table_extra_slots = intern ("char-table-extra-slots"); | |
70c22245 | 9620 | |
df7492f9 | 9621 | DEFSYM (Qtranslation_table, "translation-table"); |
433f7f87 | 9622 | Fput (Qtranslation_table, Qchar_table_extra_slots, make_number (2)); |
df7492f9 KH |
9623 | DEFSYM (Qtranslation_table_id, "translation-table-id"); |
9624 | DEFSYM (Qtranslation_table_for_decode, "translation-table-for-decode"); | |
9625 | DEFSYM (Qtranslation_table_for_encode, "translation-table-for-encode"); | |
1397dc18 | 9626 | |
df7492f9 | 9627 | DEFSYM (Qvalid_codes, "valid-codes"); |
9ce27fde | 9628 | |
df7492f9 | 9629 | DEFSYM (Qemacs_mule, "emacs-mule"); |
d46c5b12 | 9630 | |
01378f49 | 9631 | DEFSYM (QCcategory, ":category"); |
a6f87d34 KH |
9632 | DEFSYM (QCmnemonic, ":mnemonic"); |
9633 | DEFSYM (QCdefalut_char, ":default-char"); | |
9634 | DEFSYM (QCdecode_translation_table, ":decode-translation-table"); | |
9635 | DEFSYM (QCencode_translation_table, ":encode-translation-table"); | |
9636 | DEFSYM (QCpost_read_conversion, ":post-read-conversion"); | |
9637 | DEFSYM (QCpre_write_conversion, ":pre-write-conversion"); | |
35befdaa | 9638 | DEFSYM (QCascii_compatible_p, ":ascii-compatible-p"); |
01378f49 | 9639 | |
df7492f9 KH |
9640 | Vcoding_category_table |
9641 | = Fmake_vector (make_number (coding_category_max), Qnil); | |
9642 | staticpro (&Vcoding_category_table); | |
9643 | /* Followings are target of code detection. */ | |
9644 | ASET (Vcoding_category_table, coding_category_iso_7, | |
9645 | intern ("coding-category-iso-7")); | |
9646 | ASET (Vcoding_category_table, coding_category_iso_7_tight, | |
9647 | intern ("coding-category-iso-7-tight")); | |
9648 | ASET (Vcoding_category_table, coding_category_iso_8_1, | |
9649 | intern ("coding-category-iso-8-1")); | |
9650 | ASET (Vcoding_category_table, coding_category_iso_8_2, | |
9651 | intern ("coding-category-iso-8-2")); | |
9652 | ASET (Vcoding_category_table, coding_category_iso_7_else, | |
9653 | intern ("coding-category-iso-7-else")); | |
9654 | ASET (Vcoding_category_table, coding_category_iso_8_else, | |
9655 | intern ("coding-category-iso-8-else")); | |
9656 | ASET (Vcoding_category_table, coding_category_utf_8, | |
9657 | intern ("coding-category-utf-8")); | |
9658 | ASET (Vcoding_category_table, coding_category_utf_16_be, | |
9659 | intern ("coding-category-utf-16-be")); | |
ff563fce KH |
9660 | ASET (Vcoding_category_table, coding_category_utf_16_auto, |
9661 | intern ("coding-category-utf-16-auto")); | |
df7492f9 KH |
9662 | ASET (Vcoding_category_table, coding_category_utf_16_le, |
9663 | intern ("coding-category-utf-16-le")); | |
9664 | ASET (Vcoding_category_table, coding_category_utf_16_be_nosig, | |
9665 | intern ("coding-category-utf-16-be-nosig")); | |
9666 | ASET (Vcoding_category_table, coding_category_utf_16_le_nosig, | |
9667 | intern ("coding-category-utf-16-le-nosig")); | |
9668 | ASET (Vcoding_category_table, coding_category_charset, | |
9669 | intern ("coding-category-charset")); | |
9670 | ASET (Vcoding_category_table, coding_category_sjis, | |
9671 | intern ("coding-category-sjis")); | |
9672 | ASET (Vcoding_category_table, coding_category_big5, | |
9673 | intern ("coding-category-big5")); | |
9674 | ASET (Vcoding_category_table, coding_category_ccl, | |
9675 | intern ("coding-category-ccl")); | |
9676 | ASET (Vcoding_category_table, coding_category_emacs_mule, | |
9677 | intern ("coding-category-emacs-mule")); | |
9678 | /* Followings are NOT target of code detection. */ | |
9679 | ASET (Vcoding_category_table, coding_category_raw_text, | |
9680 | intern ("coding-category-raw-text")); | |
9681 | ASET (Vcoding_category_table, coding_category_undecided, | |
9682 | intern ("coding-category-undecided")); | |
ecf488bc | 9683 | |
065e3595 KH |
9684 | DEFSYM (Qinsufficient_source, "insufficient-source"); |
9685 | DEFSYM (Qinconsistent_eol, "inconsistent-eol"); | |
9686 | DEFSYM (Qinvalid_source, "invalid-source"); | |
9687 | DEFSYM (Qinterrupted, "interrupted"); | |
9688 | DEFSYM (Qinsufficient_memory, "insufficient-memory"); | |
44e8490d | 9689 | DEFSYM (Qcoding_system_define_form, "coding-system-define-form"); |
065e3595 | 9690 | |
4ed46869 KH |
9691 | defsubr (&Scoding_system_p); |
9692 | defsubr (&Sread_coding_system); | |
9693 | defsubr (&Sread_non_nil_coding_system); | |
9694 | defsubr (&Scheck_coding_system); | |
9695 | defsubr (&Sdetect_coding_region); | |
d46c5b12 | 9696 | defsubr (&Sdetect_coding_string); |
05e6f5dc | 9697 | defsubr (&Sfind_coding_systems_region_internal); |
068a9dbd | 9698 | defsubr (&Sunencodable_char_position); |
df7492f9 | 9699 | defsubr (&Scheck_coding_systems_region); |
4ed46869 KH |
9700 | defsubr (&Sdecode_coding_region); |
9701 | defsubr (&Sencode_coding_region); | |
9702 | defsubr (&Sdecode_coding_string); | |
9703 | defsubr (&Sencode_coding_string); | |
9704 | defsubr (&Sdecode_sjis_char); | |
9705 | defsubr (&Sencode_sjis_char); | |
9706 | defsubr (&Sdecode_big5_char); | |
9707 | defsubr (&Sencode_big5_char); | |
1ba9e4ab | 9708 | defsubr (&Sset_terminal_coding_system_internal); |
c4825358 | 9709 | defsubr (&Sset_safe_terminal_coding_system_internal); |
4ed46869 | 9710 | defsubr (&Sterminal_coding_system); |
1ba9e4ab | 9711 | defsubr (&Sset_keyboard_coding_system_internal); |
4ed46869 | 9712 | defsubr (&Skeyboard_coding_system); |
a5d301df | 9713 | defsubr (&Sfind_operation_coding_system); |
df7492f9 | 9714 | defsubr (&Sset_coding_system_priority); |
6b89e3aa | 9715 | defsubr (&Sdefine_coding_system_internal); |
df7492f9 | 9716 | defsubr (&Sdefine_coding_system_alias); |
a6f87d34 | 9717 | defsubr (&Scoding_system_put); |
df7492f9 KH |
9718 | defsubr (&Scoding_system_base); |
9719 | defsubr (&Scoding_system_plist); | |
9720 | defsubr (&Scoding_system_aliases); | |
9721 | defsubr (&Scoding_system_eol_type); | |
9722 | defsubr (&Scoding_system_priority_list); | |
4ed46869 | 9723 | |
4608c386 | 9724 | DEFVAR_LISP ("coding-system-list", &Vcoding_system_list, |
48b0f3ae PJ |
9725 | doc: /* List of coding systems. |
9726 | ||
9727 | Do not alter the value of this variable manually. This variable should be | |
df7492f9 | 9728 | updated by the functions `define-coding-system' and |
48b0f3ae | 9729 | `define-coding-system-alias'. */); |
4608c386 KH |
9730 | Vcoding_system_list = Qnil; |
9731 | ||
9732 | DEFVAR_LISP ("coding-system-alist", &Vcoding_system_alist, | |
48b0f3ae PJ |
9733 | doc: /* Alist of coding system names. |
9734 | Each element is one element list of coding system name. | |
9735 | This variable is given to `completing-read' as TABLE argument. | |
9736 | ||
9737 | Do not alter the value of this variable manually. This variable should be | |
9738 | updated by the functions `make-coding-system' and | |
9739 | `define-coding-system-alias'. */); | |
4608c386 KH |
9740 | Vcoding_system_alist = Qnil; |
9741 | ||
4ed46869 | 9742 | DEFVAR_LISP ("coding-category-list", &Vcoding_category_list, |
48b0f3ae PJ |
9743 | doc: /* List of coding-categories (symbols) ordered by priority. |
9744 | ||
9745 | On detecting a coding system, Emacs tries code detection algorithms | |
9746 | associated with each coding-category one by one in this order. When | |
9747 | one algorithm agrees with a byte sequence of source text, the coding | |
0ec31faf KH |
9748 | system bound to the corresponding coding-category is selected. |
9749 | ||
42205607 | 9750 | Don't modify this variable directly, but use `set-coding-priority'. */); |
4ed46869 KH |
9751 | { |
9752 | int i; | |
9753 | ||
9754 | Vcoding_category_list = Qnil; | |
df7492f9 | 9755 | for (i = coding_category_max - 1; i >= 0; i--) |
4ed46869 | 9756 | Vcoding_category_list |
d46c5b12 KH |
9757 | = Fcons (XVECTOR (Vcoding_category_table)->contents[i], |
9758 | Vcoding_category_list); | |
4ed46869 KH |
9759 | } |
9760 | ||
9761 | DEFVAR_LISP ("coding-system-for-read", &Vcoding_system_for_read, | |
48b0f3ae PJ |
9762 | doc: /* Specify the coding system for read operations. |
9763 | It is useful to bind this variable with `let', but do not set it globally. | |
9764 | If the value is a coding system, it is used for decoding on read operation. | |
9765 | If not, an appropriate element is used from one of the coding system alists: | |
9766 | There are three such tables, `file-coding-system-alist', | |
9767 | `process-coding-system-alist', and `network-coding-system-alist'. */); | |
4ed46869 KH |
9768 | Vcoding_system_for_read = Qnil; |
9769 | ||
9770 | DEFVAR_LISP ("coding-system-for-write", &Vcoding_system_for_write, | |
48b0f3ae PJ |
9771 | doc: /* Specify the coding system for write operations. |
9772 | Programs bind this variable with `let', but you should not set it globally. | |
9773 | If the value is a coding system, it is used for encoding of output, | |
9774 | when writing it to a file and when sending it to a file or subprocess. | |
9775 | ||
9776 | If this does not specify a coding system, an appropriate element | |
9777 | is used from one of the coding system alists: | |
9778 | There are three such tables, `file-coding-system-alist', | |
9779 | `process-coding-system-alist', and `network-coding-system-alist'. | |
9780 | For output to files, if the above procedure does not specify a coding system, | |
9781 | the value of `buffer-file-coding-system' is used. */); | |
4ed46869 KH |
9782 | Vcoding_system_for_write = Qnil; |
9783 | ||
9784 | DEFVAR_LISP ("last-coding-system-used", &Vlast_coding_system_used, | |
df7492f9 KH |
9785 | doc: /* |
9786 | Coding system used in the latest file or process I/O. */); | |
4ed46869 KH |
9787 | Vlast_coding_system_used = Qnil; |
9788 | ||
065e3595 KH |
9789 | DEFVAR_LISP ("last-code-conversion-error", &Vlast_code_conversion_error, |
9790 | doc: /* | |
9791 | Error status of the last code conversion. | |
9792 | ||
9793 | When an error was detected in the last code conversion, this variable | |
9794 | is set to one of the following symbols. | |
9795 | `insufficient-source' | |
9796 | `inconsistent-eol' | |
9797 | `invalid-source' | |
9798 | `interrupted' | |
9799 | `insufficient-memory' | |
9800 | When no error was detected, the value doesn't change. So, to check | |
9801 | the error status of a code conversion by this variable, you must | |
9802 | explicitly set this variable to nil before performing code | |
9803 | conversion. */); | |
9804 | Vlast_code_conversion_error = Qnil; | |
9805 | ||
9ce27fde | 9806 | DEFVAR_BOOL ("inhibit-eol-conversion", &inhibit_eol_conversion, |
df7492f9 KH |
9807 | doc: /* |
9808 | *Non-nil means always inhibit code conversion of end-of-line format. | |
48b0f3ae PJ |
9809 | See info node `Coding Systems' and info node `Text and Binary' concerning |
9810 | such conversion. */); | |
9ce27fde KH |
9811 | inhibit_eol_conversion = 0; |
9812 | ||
ed29121d | 9813 | DEFVAR_BOOL ("inherit-process-coding-system", &inherit_process_coding_system, |
df7492f9 KH |
9814 | doc: /* |
9815 | Non-nil means process buffer inherits coding system of process output. | |
48b0f3ae PJ |
9816 | Bind it to t if the process output is to be treated as if it were a file |
9817 | read from some filesystem. */); | |
ed29121d EZ |
9818 | inherit_process_coding_system = 0; |
9819 | ||
02ba4723 | 9820 | DEFVAR_LISP ("file-coding-system-alist", &Vfile_coding_system_alist, |
df7492f9 KH |
9821 | doc: /* |
9822 | Alist to decide a coding system to use for a file I/O operation. | |
48b0f3ae PJ |
9823 | The format is ((PATTERN . VAL) ...), |
9824 | where PATTERN is a regular expression matching a file name, | |
9825 | VAL is a coding system, a cons of coding systems, or a function symbol. | |
9826 | If VAL is a coding system, it is used for both decoding and encoding | |
9827 | the file contents. | |
9828 | If VAL is a cons of coding systems, the car part is used for decoding, | |
9829 | and the cdr part is used for encoding. | |
9830 | If VAL is a function symbol, the function must return a coding system | |
2c53e699 KH |
9831 | or a cons of coding systems which are used as above. The function is |
9832 | called with an argument that is a list of the arguments with which | |
5a0bbd9a KH |
9833 | `find-operation-coding-system' was called. If the function can't decide |
9834 | a coding system, it can return `undecided' so that the normal | |
9835 | code-detection is performed. | |
48b0f3ae PJ |
9836 | |
9837 | See also the function `find-operation-coding-system' | |
9838 | and the variable `auto-coding-alist'. */); | |
02ba4723 KH |
9839 | Vfile_coding_system_alist = Qnil; |
9840 | ||
9841 | DEFVAR_LISP ("process-coding-system-alist", &Vprocess_coding_system_alist, | |
df7492f9 KH |
9842 | doc: /* |
9843 | Alist to decide a coding system to use for a process I/O operation. | |
48b0f3ae PJ |
9844 | The format is ((PATTERN . VAL) ...), |
9845 | where PATTERN is a regular expression matching a program name, | |
9846 | VAL is a coding system, a cons of coding systems, or a function symbol. | |
9847 | If VAL is a coding system, it is used for both decoding what received | |
9848 | from the program and encoding what sent to the program. | |
9849 | If VAL is a cons of coding systems, the car part is used for decoding, | |
9850 | and the cdr part is used for encoding. | |
9851 | If VAL is a function symbol, the function must return a coding system | |
9852 | or a cons of coding systems which are used as above. | |
9853 | ||
9854 | See also the function `find-operation-coding-system'. */); | |
02ba4723 KH |
9855 | Vprocess_coding_system_alist = Qnil; |
9856 | ||
9857 | DEFVAR_LISP ("network-coding-system-alist", &Vnetwork_coding_system_alist, | |
df7492f9 KH |
9858 | doc: /* |
9859 | Alist to decide a coding system to use for a network I/O operation. | |
48b0f3ae PJ |
9860 | The format is ((PATTERN . VAL) ...), |
9861 | where PATTERN is a regular expression matching a network service name | |
9862 | or is a port number to connect to, | |
9863 | VAL is a coding system, a cons of coding systems, or a function symbol. | |
9864 | If VAL is a coding system, it is used for both decoding what received | |
9865 | from the network stream and encoding what sent to the network stream. | |
9866 | If VAL is a cons of coding systems, the car part is used for decoding, | |
9867 | and the cdr part is used for encoding. | |
9868 | If VAL is a function symbol, the function must return a coding system | |
9869 | or a cons of coding systems which are used as above. | |
9870 | ||
9871 | See also the function `find-operation-coding-system'. */); | |
02ba4723 | 9872 | Vnetwork_coding_system_alist = Qnil; |
4ed46869 | 9873 | |
68c45bf0 | 9874 | DEFVAR_LISP ("locale-coding-system", &Vlocale_coding_system, |
75205970 RS |
9875 | doc: /* Coding system to use with system messages. |
9876 | Also used for decoding keyboard input on X Window system. */); | |
68c45bf0 PE |
9877 | Vlocale_coding_system = Qnil; |
9878 | ||
005f0d35 | 9879 | /* The eol mnemonics are reset in startup.el system-dependently. */ |
7722baf9 | 9880 | DEFVAR_LISP ("eol-mnemonic-unix", &eol_mnemonic_unix, |
df7492f9 KH |
9881 | doc: /* |
9882 | *String displayed in mode line for UNIX-like (LF) end-of-line format. */); | |
7722baf9 | 9883 | eol_mnemonic_unix = build_string (":"); |
4ed46869 | 9884 | |
7722baf9 | 9885 | DEFVAR_LISP ("eol-mnemonic-dos", &eol_mnemonic_dos, |
df7492f9 KH |
9886 | doc: /* |
9887 | *String displayed in mode line for DOS-like (CRLF) end-of-line format. */); | |
7722baf9 | 9888 | eol_mnemonic_dos = build_string ("\\"); |
4ed46869 | 9889 | |
7722baf9 | 9890 | DEFVAR_LISP ("eol-mnemonic-mac", &eol_mnemonic_mac, |
df7492f9 KH |
9891 | doc: /* |
9892 | *String displayed in mode line for MAC-like (CR) end-of-line format. */); | |
7722baf9 | 9893 | eol_mnemonic_mac = build_string ("/"); |
4ed46869 | 9894 | |
7722baf9 | 9895 | DEFVAR_LISP ("eol-mnemonic-undecided", &eol_mnemonic_undecided, |
df7492f9 KH |
9896 | doc: /* |
9897 | *String displayed in mode line when end-of-line format is not yet determined. */); | |
7722baf9 | 9898 | eol_mnemonic_undecided = build_string (":"); |
4ed46869 | 9899 | |
84fbb8a0 | 9900 | DEFVAR_LISP ("enable-character-translation", &Venable_character_translation, |
df7492f9 KH |
9901 | doc: /* |
9902 | *Non-nil enables character translation while encoding and decoding. */); | |
84fbb8a0 | 9903 | Venable_character_translation = Qt; |
bdd9fb48 | 9904 | |
f967223b | 9905 | DEFVAR_LISP ("standard-translation-table-for-decode", |
48b0f3ae PJ |
9906 | &Vstandard_translation_table_for_decode, |
9907 | doc: /* Table for translating characters while decoding. */); | |
f967223b | 9908 | Vstandard_translation_table_for_decode = Qnil; |
bdd9fb48 | 9909 | |
f967223b | 9910 | DEFVAR_LISP ("standard-translation-table-for-encode", |
48b0f3ae PJ |
9911 | &Vstandard_translation_table_for_encode, |
9912 | doc: /* Table for translating characters while encoding. */); | |
f967223b | 9913 | Vstandard_translation_table_for_encode = Qnil; |
4ed46869 | 9914 | |
df7492f9 | 9915 | DEFVAR_LISP ("charset-revision-table", &Vcharset_revision_table, |
48b0f3ae PJ |
9916 | doc: /* Alist of charsets vs revision numbers. |
9917 | While encoding, if a charset (car part of an element) is found, | |
df7492f9 KH |
9918 | designate it with the escape sequence identifying revision (cdr part |
9919 | of the element). */); | |
9920 | Vcharset_revision_table = Qnil; | |
02ba4723 KH |
9921 | |
9922 | DEFVAR_LISP ("default-process-coding-system", | |
9923 | &Vdefault_process_coding_system, | |
48b0f3ae PJ |
9924 | doc: /* Cons of coding systems used for process I/O by default. |
9925 | The car part is used for decoding a process output, | |
9926 | the cdr part is used for encoding a text to be sent to a process. */); | |
02ba4723 | 9927 | Vdefault_process_coding_system = Qnil; |
c4825358 | 9928 | |
3f003981 | 9929 | DEFVAR_LISP ("latin-extra-code-table", &Vlatin_extra_code_table, |
df7492f9 KH |
9930 | doc: /* |
9931 | Table of extra Latin codes in the range 128..159 (inclusive). | |
48b0f3ae PJ |
9932 | This is a vector of length 256. |
9933 | If Nth element is non-nil, the existence of code N in a file | |
9934 | \(or output of subprocess) doesn't prevent it to be detected as | |
9935 | a coding system of ISO 2022 variant which has a flag | |
9936 | `accept-latin-extra-code' t (e.g. iso-latin-1) on reading a file | |
9937 | or reading output of a subprocess. | |
9938 | Only 128th through 159th elements has a meaning. */); | |
3f003981 | 9939 | Vlatin_extra_code_table = Fmake_vector (make_number (256), Qnil); |
d46c5b12 KH |
9940 | |
9941 | DEFVAR_LISP ("select-safe-coding-system-function", | |
9942 | &Vselect_safe_coding_system_function, | |
df7492f9 KH |
9943 | doc: /* |
9944 | Function to call to select safe coding system for encoding a text. | |
48b0f3ae PJ |
9945 | |
9946 | If set, this function is called to force a user to select a proper | |
9947 | coding system which can encode the text in the case that a default | |
fdecf907 GM |
9948 | coding system used in each operation can't encode the text. The |
9949 | function should take care that the buffer is not modified while | |
9950 | the coding system is being selected. | |
48b0f3ae PJ |
9951 | |
9952 | The default value is `select-safe-coding-system' (which see). */); | |
d46c5b12 KH |
9953 | Vselect_safe_coding_system_function = Qnil; |
9954 | ||
5d5bf4d8 KH |
9955 | DEFVAR_BOOL ("coding-system-require-warning", |
9956 | &coding_system_require_warning, | |
9957 | doc: /* Internal use only. | |
6b89e3aa KH |
9958 | If non-nil, on writing a file, `select-safe-coding-system-function' is |
9959 | called even if `coding-system-for-write' is non-nil. The command | |
9960 | `universal-coding-system-argument' binds this variable to t temporarily. */); | |
5d5bf4d8 KH |
9961 | coding_system_require_warning = 0; |
9962 | ||
9963 | ||
22ab2303 | 9964 | DEFVAR_BOOL ("inhibit-iso-escape-detection", |
74383408 | 9965 | &inhibit_iso_escape_detection, |
df7492f9 KH |
9966 | doc: /* |
9967 | If non-nil, Emacs ignores ISO2022's escape sequence on code detection. | |
48b0f3ae PJ |
9968 | |
9969 | By default, on reading a file, Emacs tries to detect how the text is | |
9970 | encoded. This code detection is sensitive to escape sequences. If | |
9971 | the sequence is valid as ISO2022, the code is determined as one of | |
9972 | the ISO2022 encodings, and the file is decoded by the corresponding | |
9973 | coding system (e.g. `iso-2022-7bit'). | |
9974 | ||
9975 | However, there may be a case that you want to read escape sequences in | |
9976 | a file as is. In such a case, you can set this variable to non-nil. | |
9977 | Then, as the code detection ignores any escape sequences, no file is | |
9978 | detected as encoded in some ISO2022 encoding. The result is that all | |
9979 | escape sequences become visible in a buffer. | |
9980 | ||
9981 | The default value is nil, and it is strongly recommended not to change | |
9982 | it. That is because many Emacs Lisp source files that contain | |
9983 | non-ASCII characters are encoded by the coding system `iso-2022-7bit' | |
9984 | in Emacs's distribution, and they won't be decoded correctly on | |
9985 | reading if you suppress escape sequence detection. | |
9986 | ||
9987 | The other way to read escape sequences in a file without decoding is | |
9988 | to explicitly specify some coding system that doesn't use ISO2022's | |
9989 | escape sequence (e.g `latin-1') on reading by \\[universal-coding-system-argument]. */); | |
74383408 | 9990 | inhibit_iso_escape_detection = 0; |
002fdb44 DL |
9991 | |
9992 | DEFVAR_LISP ("translation-table-for-input", &Vtranslation_table_for_input, | |
15c8f9d1 DL |
9993 | doc: /* Char table for translating self-inserting characters. |
9994 | This is applied to the result of input methods, not their input. See also | |
9995 | `keyboard-translate-table'. */); | |
002fdb44 | 9996 | Vtranslation_table_for_input = Qnil; |
8f924df7 | 9997 | |
2c78b7e1 KH |
9998 | { |
9999 | Lisp_Object args[coding_arg_max]; | |
8f924df7 | 10000 | Lisp_Object plist[16]; |
2c78b7e1 KH |
10001 | int i; |
10002 | ||
10003 | for (i = 0; i < coding_arg_max; i++) | |
10004 | args[i] = Qnil; | |
10005 | ||
10006 | plist[0] = intern (":name"); | |
10007 | plist[1] = args[coding_arg_name] = Qno_conversion; | |
10008 | plist[2] = intern (":mnemonic"); | |
10009 | plist[3] = args[coding_arg_mnemonic] = make_number ('='); | |
10010 | plist[4] = intern (":coding-type"); | |
10011 | plist[5] = args[coding_arg_coding_type] = Qraw_text; | |
10012 | plist[6] = intern (":ascii-compatible-p"); | |
10013 | plist[7] = args[coding_arg_ascii_compatible_p] = Qt; | |
10014 | plist[8] = intern (":default-char"); | |
10015 | plist[9] = args[coding_arg_default_char] = make_number (0); | |
8f924df7 KH |
10016 | plist[10] = intern (":for-unibyte"); |
10017 | plist[11] = args[coding_arg_for_unibyte] = Qt; | |
10018 | plist[12] = intern (":docstring"); | |
10019 | plist[13] = build_string ("Do no conversion.\n\ | |
2c78b7e1 KH |
10020 | \n\ |
10021 | When you visit a file with this coding, the file is read into a\n\ | |
10022 | unibyte buffer as is, thus each byte of a file is treated as a\n\ | |
10023 | character."); | |
8f924df7 KH |
10024 | plist[14] = intern (":eol-type"); |
10025 | plist[15] = args[coding_arg_eol_type] = Qunix; | |
10026 | args[coding_arg_plist] = Flist (16, plist); | |
2c78b7e1 | 10027 | Fdefine_coding_system_internal (coding_arg_max, args); |
ae6f73fa KH |
10028 | |
10029 | plist[1] = args[coding_arg_name] = Qundecided; | |
10030 | plist[3] = args[coding_arg_mnemonic] = make_number ('-'); | |
10031 | plist[5] = args[coding_arg_coding_type] = Qundecided; | |
10032 | /* This is already set. | |
35befdaa | 10033 | plist[7] = args[coding_arg_ascii_compatible_p] = Qt; */ |
ae6f73fa KH |
10034 | plist[8] = intern (":charset-list"); |
10035 | plist[9] = args[coding_arg_charset_list] = Fcons (Qascii, Qnil); | |
10036 | plist[11] = args[coding_arg_for_unibyte] = Qnil; | |
10037 | plist[13] = build_string ("No conversion on encoding, automatic conversion on decoding."); | |
10038 | plist[15] = args[coding_arg_eol_type] = Qnil; | |
10039 | args[coding_arg_plist] = Flist (16, plist); | |
10040 | Fdefine_coding_system_internal (coding_arg_max, args); | |
2c78b7e1 KH |
10041 | } |
10042 | ||
2c78b7e1 | 10043 | setup_coding_system (Qno_conversion, &safe_terminal_coding); |
ff563fce KH |
10044 | |
10045 | { | |
10046 | int i; | |
10047 | ||
10048 | for (i = 0; i < coding_category_max; i++) | |
10049 | Fset (AREF (Vcoding_category_table, i), Qno_conversion); | |
10050 | } | |
fcbcfb64 KH |
10051 | #if defined (MSDOS) || defined (WINDOWSNT) |
10052 | system_eol_type = Qdos; | |
10053 | #else | |
10054 | system_eol_type = Qunix; | |
10055 | #endif | |
10056 | staticpro (&system_eol_type); | |
4ed46869 KH |
10057 | } |
10058 | ||
68c45bf0 PE |
10059 | char * |
10060 | emacs_strerror (error_number) | |
10061 | int error_number; | |
10062 | { | |
10063 | char *str; | |
10064 | ||
ca9c0567 | 10065 | synchronize_system_messages_locale (); |
68c45bf0 PE |
10066 | str = strerror (error_number); |
10067 | ||
10068 | if (! NILP (Vlocale_coding_system)) | |
10069 | { | |
10070 | Lisp_Object dec = code_convert_string_norecord (build_string (str), | |
10071 | Vlocale_coding_system, | |
10072 | 0); | |
d5db4077 | 10073 | str = (char *) SDATA (dec); |
68c45bf0 PE |
10074 | } |
10075 | ||
10076 | return str; | |
10077 | } | |
10078 | ||
4ed46869 | 10079 | #endif /* emacs */ |
9ffd559c KH |
10080 | |
10081 | /* arch-tag: 3a3a2b01-5ff6-4071-9afe-f5b808d9229d | |
10082 | (do not change this comment) */ |