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 \ | |
2f3cbb32 | 628 | | CATEGORY_MASK_UTF_16_AUTO \ |
df7492f9 KH |
629 | | CATEGORY_MASK_UTF_16_BE \ |
630 | | CATEGORY_MASK_UTF_16_LE \ | |
631 | | CATEGORY_MASK_UTF_16_BE_NOSIG \ | |
632 | | CATEGORY_MASK_UTF_16_LE_NOSIG \ | |
633 | | CATEGORY_MASK_CHARSET \ | |
634 | | CATEGORY_MASK_SJIS \ | |
635 | | CATEGORY_MASK_BIG5 \ | |
636 | | CATEGORY_MASK_CCL \ | |
637 | | CATEGORY_MASK_EMACS_MULE) | |
638 | ||
639 | ||
640 | #define CATEGORY_MASK_ISO_7BIT \ | |
641 | (CATEGORY_MASK_ISO_7 | CATEGORY_MASK_ISO_7_TIGHT) | |
642 | ||
643 | #define CATEGORY_MASK_ISO_8BIT \ | |
644 | (CATEGORY_MASK_ISO_8_1 | CATEGORY_MASK_ISO_8_2) | |
645 | ||
646 | #define CATEGORY_MASK_ISO_ELSE \ | |
647 | (CATEGORY_MASK_ISO_7_ELSE | CATEGORY_MASK_ISO_8_ELSE) | |
648 | ||
649 | #define CATEGORY_MASK_ISO_ESCAPE \ | |
650 | (CATEGORY_MASK_ISO_7 \ | |
651 | | CATEGORY_MASK_ISO_7_TIGHT \ | |
652 | | CATEGORY_MASK_ISO_7_ELSE \ | |
653 | | CATEGORY_MASK_ISO_8_ELSE) | |
654 | ||
655 | #define CATEGORY_MASK_ISO \ | |
656 | ( CATEGORY_MASK_ISO_7BIT \ | |
657 | | CATEGORY_MASK_ISO_8BIT \ | |
658 | | CATEGORY_MASK_ISO_ELSE) | |
659 | ||
660 | #define CATEGORY_MASK_UTF_16 \ | |
2f3cbb32 KH |
661 | (CATEGORY_MASK_UTF_16_AUTO \ |
662 | | CATEGORY_MASK_UTF_16_BE \ | |
df7492f9 KH |
663 | | CATEGORY_MASK_UTF_16_LE \ |
664 | | CATEGORY_MASK_UTF_16_BE_NOSIG \ | |
665 | | CATEGORY_MASK_UTF_16_LE_NOSIG) | |
666 | ||
667 | ||
668 | /* List of symbols `coding-category-xxx' ordered by priority. This | |
669 | variable is exposed to Emacs Lisp. */ | |
670 | static Lisp_Object Vcoding_category_list; | |
671 | ||
672 | /* Table of coding categories (Lisp symbols). This variable is for | |
673 | internal use oly. */ | |
674 | static Lisp_Object Vcoding_category_table; | |
675 | ||
676 | /* Table of coding-categories ordered by priority. */ | |
677 | static enum coding_category coding_priorities[coding_category_max]; | |
678 | ||
679 | /* Nth element is a coding context for the coding system bound to the | |
680 | Nth coding category. */ | |
681 | static struct coding_system coding_categories[coding_category_max]; | |
682 | ||
df7492f9 KH |
683 | /*** Commonly used macros and functions ***/ |
684 | ||
685 | #ifndef min | |
686 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
687 | #endif | |
688 | #ifndef max | |
689 | #define max(a, b) ((a) > (b) ? (a) : (b)) | |
690 | #endif | |
4ed46869 | 691 | |
24a73b0a KH |
692 | #define CODING_GET_INFO(coding, attrs, charset_list) \ |
693 | do { \ | |
694 | (attrs) = CODING_ID_ATTRS ((coding)->id); \ | |
695 | (charset_list) = CODING_ATTR_CHARSET_LIST (attrs); \ | |
df7492f9 | 696 | } while (0) |
4ed46869 | 697 | |
4ed46869 | 698 | |
df7492f9 KH |
699 | /* Safely get one byte from the source text pointed by SRC which ends |
700 | at SRC_END, and set C to that byte. If there are not enough bytes | |
065e3595 KH |
701 | in the source, it jumps to `no_more_source'. If multibytep is |
702 | nonzero, and a multibyte character is found at SRC, set C to the | |
703 | negative value of the character code. The caller should declare | |
704 | and set these variables appropriately in advance: | |
705 | src, src_end, multibytep */ | |
aa72b389 | 706 | |
065e3595 KH |
707 | #define ONE_MORE_BYTE(c) \ |
708 | do { \ | |
709 | if (src == src_end) \ | |
710 | { \ | |
711 | if (src_base < src) \ | |
712 | record_conversion_result \ | |
713 | (coding, CODING_RESULT_INSUFFICIENT_SRC); \ | |
714 | goto no_more_source; \ | |
715 | } \ | |
716 | c = *src++; \ | |
717 | if (multibytep && (c & 0x80)) \ | |
718 | { \ | |
719 | if ((c & 0xFE) == 0xC0) \ | |
720 | c = ((c & 1) << 6) | *src++; \ | |
721 | else \ | |
722 | { \ | |
35befdaa KH |
723 | src--; \ |
724 | c = - string_char (src, &src, NULL); \ | |
065e3595 KH |
725 | record_conversion_result \ |
726 | (coding, CODING_RESULT_INVALID_SRC); \ | |
727 | } \ | |
728 | } \ | |
729 | consumed_chars++; \ | |
aa72b389 KH |
730 | } while (0) |
731 | ||
aa72b389 | 732 | |
065e3595 KH |
733 | #define ONE_MORE_BYTE_NO_CHECK(c) \ |
734 | do { \ | |
735 | c = *src++; \ | |
736 | if (multibytep && (c & 0x80)) \ | |
737 | { \ | |
738 | if ((c & 0xFE) == 0xC0) \ | |
739 | c = ((c & 1) << 6) | *src++; \ | |
740 | else \ | |
741 | { \ | |
35befdaa KH |
742 | src--; \ |
743 | c = - string_char (src, &src, NULL); \ | |
065e3595 KH |
744 | record_conversion_result \ |
745 | (coding, CODING_RESULT_INVALID_SRC); \ | |
746 | } \ | |
747 | } \ | |
748 | consumed_chars++; \ | |
aa72b389 KH |
749 | } while (0) |
750 | ||
aa72b389 | 751 | |
df7492f9 KH |
752 | /* Store a byte C in the place pointed by DST and increment DST to the |
753 | next free point, and increment PRODUCED_CHARS. The caller should | |
754 | assure that C is 0..127, and declare and set the variable `dst' | |
755 | appropriately in advance. | |
756 | */ | |
aa72b389 KH |
757 | |
758 | ||
df7492f9 KH |
759 | #define EMIT_ONE_ASCII_BYTE(c) \ |
760 | do { \ | |
761 | produced_chars++; \ | |
762 | *dst++ = (c); \ | |
b6871cc7 | 763 | } while (0) |
aa72b389 KH |
764 | |
765 | ||
df7492f9 | 766 | /* Like EMIT_ONE_ASCII_BYTE byt store two bytes; C1 and C2. */ |
aa72b389 | 767 | |
df7492f9 KH |
768 | #define EMIT_TWO_ASCII_BYTES(c1, c2) \ |
769 | do { \ | |
770 | produced_chars += 2; \ | |
771 | *dst++ = (c1), *dst++ = (c2); \ | |
772 | } while (0) | |
aa72b389 KH |
773 | |
774 | ||
df7492f9 KH |
775 | /* Store a byte C in the place pointed by DST and increment DST to the |
776 | next free point, and increment PRODUCED_CHARS. If MULTIBYTEP is | |
777 | nonzero, store in an appropriate multibyte from. The caller should | |
778 | declare and set the variables `dst' and `multibytep' appropriately | |
779 | in advance. */ | |
780 | ||
781 | #define EMIT_ONE_BYTE(c) \ | |
782 | do { \ | |
783 | produced_chars++; \ | |
784 | if (multibytep) \ | |
785 | { \ | |
786 | int ch = (c); \ | |
787 | if (ch >= 0x80) \ | |
788 | ch = BYTE8_TO_CHAR (ch); \ | |
789 | CHAR_STRING_ADVANCE (ch, dst); \ | |
790 | } \ | |
791 | else \ | |
792 | *dst++ = (c); \ | |
aa72b389 | 793 | } while (0) |
aa72b389 | 794 | |
aa72b389 | 795 | |
df7492f9 | 796 | /* Like EMIT_ONE_BYTE, but emit two bytes; C1 and C2. */ |
aa72b389 | 797 | |
e19c3639 KH |
798 | #define EMIT_TWO_BYTES(c1, c2) \ |
799 | do { \ | |
800 | produced_chars += 2; \ | |
801 | if (multibytep) \ | |
802 | { \ | |
803 | int ch; \ | |
804 | \ | |
805 | ch = (c1); \ | |
806 | if (ch >= 0x80) \ | |
807 | ch = BYTE8_TO_CHAR (ch); \ | |
808 | CHAR_STRING_ADVANCE (ch, dst); \ | |
809 | ch = (c2); \ | |
810 | if (ch >= 0x80) \ | |
811 | ch = BYTE8_TO_CHAR (ch); \ | |
812 | CHAR_STRING_ADVANCE (ch, dst); \ | |
813 | } \ | |
814 | else \ | |
815 | { \ | |
816 | *dst++ = (c1); \ | |
817 | *dst++ = (c2); \ | |
818 | } \ | |
aa72b389 KH |
819 | } while (0) |
820 | ||
821 | ||
df7492f9 KH |
822 | #define EMIT_THREE_BYTES(c1, c2, c3) \ |
823 | do { \ | |
824 | EMIT_ONE_BYTE (c1); \ | |
825 | EMIT_TWO_BYTES (c2, c3); \ | |
826 | } while (0) | |
aa72b389 | 827 | |
aa72b389 | 828 | |
df7492f9 KH |
829 | #define EMIT_FOUR_BYTES(c1, c2, c3, c4) \ |
830 | do { \ | |
831 | EMIT_TWO_BYTES (c1, c2); \ | |
832 | EMIT_TWO_BYTES (c3, c4); \ | |
833 | } while (0) | |
aa72b389 | 834 | |
aa72b389 | 835 | |
f6cbaf43 KH |
836 | /* Prototypes for static functions. */ |
837 | static void record_conversion_result P_ ((struct coding_system *coding, | |
838 | enum coding_result_code result)); | |
839 | static int detect_coding_utf_8 P_ ((struct coding_system *, | |
840 | struct coding_detection_info *info)); | |
841 | static void decode_coding_utf_8 P_ ((struct coding_system *)); | |
842 | static int encode_coding_utf_8 P_ ((struct coding_system *)); | |
843 | ||
844 | static int detect_coding_utf_16 P_ ((struct coding_system *, | |
845 | struct coding_detection_info *info)); | |
846 | static void decode_coding_utf_16 P_ ((struct coding_system *)); | |
847 | static int encode_coding_utf_16 P_ ((struct coding_system *)); | |
848 | ||
849 | static int detect_coding_iso_2022 P_ ((struct coding_system *, | |
850 | struct coding_detection_info *info)); | |
851 | static void decode_coding_iso_2022 P_ ((struct coding_system *)); | |
852 | static int encode_coding_iso_2022 P_ ((struct coding_system *)); | |
853 | ||
854 | static int detect_coding_emacs_mule P_ ((struct coding_system *, | |
855 | struct coding_detection_info *info)); | |
856 | static void decode_coding_emacs_mule P_ ((struct coding_system *)); | |
857 | static int encode_coding_emacs_mule P_ ((struct coding_system *)); | |
858 | ||
859 | static int detect_coding_sjis P_ ((struct coding_system *, | |
860 | struct coding_detection_info *info)); | |
861 | static void decode_coding_sjis P_ ((struct coding_system *)); | |
862 | static int encode_coding_sjis P_ ((struct coding_system *)); | |
863 | ||
864 | static int detect_coding_big5 P_ ((struct coding_system *, | |
865 | struct coding_detection_info *info)); | |
866 | static void decode_coding_big5 P_ ((struct coding_system *)); | |
867 | static int encode_coding_big5 P_ ((struct coding_system *)); | |
868 | ||
869 | static int detect_coding_ccl P_ ((struct coding_system *, | |
870 | struct coding_detection_info *info)); | |
871 | static void decode_coding_ccl P_ ((struct coding_system *)); | |
872 | static int encode_coding_ccl P_ ((struct coding_system *)); | |
873 | ||
874 | static void decode_coding_raw_text P_ ((struct coding_system *)); | |
875 | static int encode_coding_raw_text P_ ((struct coding_system *)); | |
876 | ||
877 | static void coding_set_source P_ ((struct coding_system *)); | |
878 | static void coding_set_destination P_ ((struct coding_system *)); | |
879 | static void coding_alloc_by_realloc P_ ((struct coding_system *, EMACS_INT)); | |
880 | static void coding_alloc_by_making_gap P_ ((struct coding_system *, | |
287c57d7 | 881 | EMACS_INT, EMACS_INT)); |
f6cbaf43 KH |
882 | static unsigned char *alloc_destination P_ ((struct coding_system *, |
883 | EMACS_INT, unsigned char *)); | |
884 | static void setup_iso_safe_charsets P_ ((Lisp_Object)); | |
885 | static unsigned char *encode_designation_at_bol P_ ((struct coding_system *, | |
886 | int *, int *, | |
887 | unsigned char *)); | |
888 | static int detect_eol P_ ((const unsigned char *, | |
889 | EMACS_INT, enum coding_category)); | |
890 | static Lisp_Object adjust_coding_eol_type P_ ((struct coding_system *, int)); | |
891 | static void decode_eol P_ ((struct coding_system *)); | |
892 | static Lisp_Object get_translation_table P_ ((Lisp_Object, int, int *)); | |
893 | static Lisp_Object get_translation P_ ((Lisp_Object, int *, int *, | |
894 | int, int *, int *)); | |
895 | static int produce_chars P_ ((struct coding_system *, Lisp_Object, int)); | |
896 | static INLINE void produce_composition P_ ((struct coding_system *, int *, | |
897 | EMACS_INT)); | |
898 | static INLINE void produce_charset P_ ((struct coding_system *, int *, | |
899 | EMACS_INT)); | |
900 | static void produce_annotation P_ ((struct coding_system *, EMACS_INT)); | |
901 | static int decode_coding P_ ((struct coding_system *)); | |
902 | static INLINE int *handle_composition_annotation P_ ((EMACS_INT, EMACS_INT, | |
903 | struct coding_system *, | |
904 | int *, EMACS_INT *)); | |
905 | static INLINE int *handle_charset_annotation P_ ((EMACS_INT, EMACS_INT, | |
906 | struct coding_system *, | |
907 | int *, EMACS_INT *)); | |
908 | static void consume_chars P_ ((struct coding_system *, Lisp_Object, int)); | |
909 | static int encode_coding P_ ((struct coding_system *)); | |
910 | static Lisp_Object make_conversion_work_buffer P_ ((int)); | |
911 | static Lisp_Object code_conversion_restore P_ ((Lisp_Object)); | |
912 | static INLINE int char_encodable_p P_ ((int, Lisp_Object)); | |
913 | static Lisp_Object make_subsidiaries P_ ((Lisp_Object)); | |
914 | ||
065e3595 KH |
915 | static void |
916 | record_conversion_result (struct coding_system *coding, | |
917 | enum coding_result_code result) | |
918 | { | |
919 | coding->result = result; | |
920 | switch (result) | |
921 | { | |
922 | case CODING_RESULT_INSUFFICIENT_SRC: | |
923 | Vlast_code_conversion_error = Qinsufficient_source; | |
924 | break; | |
925 | case CODING_RESULT_INCONSISTENT_EOL: | |
926 | Vlast_code_conversion_error = Qinconsistent_eol; | |
927 | break; | |
928 | case CODING_RESULT_INVALID_SRC: | |
929 | Vlast_code_conversion_error = Qinvalid_source; | |
930 | break; | |
931 | case CODING_RESULT_INTERRUPT: | |
932 | Vlast_code_conversion_error = Qinterrupted; | |
933 | break; | |
934 | case CODING_RESULT_INSUFFICIENT_MEM: | |
935 | Vlast_code_conversion_error = Qinsufficient_memory; | |
936 | break; | |
35befdaa KH |
937 | default: |
938 | Vlast_code_conversion_error = intern ("Unknown error"); | |
065e3595 KH |
939 | } |
940 | } | |
941 | ||
df7492f9 KH |
942 | #define CODING_DECODE_CHAR(coding, src, src_base, src_end, charset, code, c) \ |
943 | do { \ | |
944 | charset_map_loaded = 0; \ | |
945 | c = DECODE_CHAR (charset, code); \ | |
946 | if (charset_map_loaded) \ | |
947 | { \ | |
8f924df7 | 948 | const unsigned char *orig = coding->source; \ |
df7492f9 KH |
949 | EMACS_INT offset; \ |
950 | \ | |
951 | coding_set_source (coding); \ | |
952 | offset = coding->source - orig; \ | |
953 | src += offset; \ | |
954 | src_base += offset; \ | |
955 | src_end += offset; \ | |
956 | } \ | |
aa72b389 KH |
957 | } while (0) |
958 | ||
959 | ||
119852e7 KH |
960 | /* If there are at least BYTES length of room at dst, allocate memory |
961 | for coding->destination and update dst and dst_end. We don't have | |
962 | to take care of coding->source which will be relocated. It is | |
963 | handled by calling coding_set_source in encode_coding. */ | |
964 | ||
df7492f9 KH |
965 | #define ASSURE_DESTINATION(bytes) \ |
966 | do { \ | |
967 | if (dst + (bytes) >= dst_end) \ | |
968 | { \ | |
969 | int more_bytes = charbuf_end - charbuf + (bytes); \ | |
970 | \ | |
971 | dst = alloc_destination (coding, more_bytes, dst); \ | |
972 | dst_end = coding->destination + coding->dst_bytes; \ | |
973 | } \ | |
974 | } while (0) | |
aa72b389 | 975 | |
aa72b389 | 976 | |
db274c7a KH |
977 | /* Store multibyte form of the character C in P, and advance P to the |
978 | end of the multibyte form. This is like CHAR_STRING_ADVANCE but it | |
979 | never calls MAYBE_UNIFY_CHAR. */ | |
980 | ||
981 | #define CHAR_STRING_ADVANCE_NO_UNIFY(c, p) \ | |
982 | do { \ | |
983 | if ((c) <= MAX_1_BYTE_CHAR) \ | |
984 | *(p)++ = (c); \ | |
985 | else if ((c) <= MAX_2_BYTE_CHAR) \ | |
986 | *(p)++ = (0xC0 | ((c) >> 6)), \ | |
987 | *(p)++ = (0x80 | ((c) & 0x3F)); \ | |
988 | else if ((c) <= MAX_3_BYTE_CHAR) \ | |
989 | *(p)++ = (0xE0 | ((c) >> 12)), \ | |
990 | *(p)++ = (0x80 | (((c) >> 6) & 0x3F)), \ | |
991 | *(p)++ = (0x80 | ((c) & 0x3F)); \ | |
992 | else if ((c) <= MAX_4_BYTE_CHAR) \ | |
993 | *(p)++ = (0xF0 | (c >> 18)), \ | |
994 | *(p)++ = (0x80 | ((c >> 12) & 0x3F)), \ | |
995 | *(p)++ = (0x80 | ((c >> 6) & 0x3F)), \ | |
996 | *(p)++ = (0x80 | (c & 0x3F)); \ | |
997 | else if ((c) <= MAX_5_BYTE_CHAR) \ | |
998 | *(p)++ = 0xF8, \ | |
999 | *(p)++ = (0x80 | ((c >> 18) & 0x0F)), \ | |
1000 | *(p)++ = (0x80 | ((c >> 12) & 0x3F)), \ | |
1001 | *(p)++ = (0x80 | ((c >> 6) & 0x3F)), \ | |
1002 | *(p)++ = (0x80 | (c & 0x3F)); \ | |
1003 | else \ | |
1004 | (p) += BYTE8_STRING ((c) - 0x3FFF80, p); \ | |
1005 | } while (0) | |
1006 | ||
1007 | ||
1008 | /* Return the character code of character whose multibyte form is at | |
1009 | P, and advance P to the end of the multibyte form. This is like | |
1010 | STRING_CHAR_ADVANCE, but it never calls MAYBE_UNIFY_CHAR. */ | |
1011 | ||
1012 | #define STRING_CHAR_ADVANCE_NO_UNIFY(p) \ | |
1013 | (!((p)[0] & 0x80) \ | |
1014 | ? *(p)++ \ | |
1015 | : ! ((p)[0] & 0x20) \ | |
1016 | ? ((p) += 2, \ | |
1017 | ((((p)[-2] & 0x1F) << 6) \ | |
1018 | | ((p)[-1] & 0x3F) \ | |
1019 | | ((unsigned char) ((p)[-2]) < 0xC2 ? 0x3FFF80 : 0))) \ | |
1020 | : ! ((p)[0] & 0x10) \ | |
1021 | ? ((p) += 3, \ | |
1022 | ((((p)[-3] & 0x0F) << 12) \ | |
1023 | | (((p)[-2] & 0x3F) << 6) \ | |
1024 | | ((p)[-1] & 0x3F))) \ | |
1025 | : ! ((p)[0] & 0x08) \ | |
1026 | ? ((p) += 4, \ | |
1027 | ((((p)[-4] & 0xF) << 18) \ | |
1028 | | (((p)[-3] & 0x3F) << 12) \ | |
1029 | | (((p)[-2] & 0x3F) << 6) \ | |
1030 | | ((p)[-1] & 0x3F))) \ | |
1031 | : ((p) += 5, \ | |
1032 | ((((p)[-4] & 0x3F) << 18) \ | |
1033 | | (((p)[-3] & 0x3F) << 12) \ | |
1034 | | (((p)[-2] & 0x3F) << 6) \ | |
1035 | | ((p)[-1] & 0x3F)))) | |
1036 | ||
aa72b389 | 1037 | |
df7492f9 KH |
1038 | static void |
1039 | coding_set_source (coding) | |
aa72b389 | 1040 | struct coding_system *coding; |
aa72b389 | 1041 | { |
df7492f9 KH |
1042 | if (BUFFERP (coding->src_object)) |
1043 | { | |
2cb26057 | 1044 | struct buffer *buf = XBUFFER (coding->src_object); |
aa72b389 | 1045 | |
df7492f9 | 1046 | if (coding->src_pos < 0) |
2cb26057 | 1047 | coding->source = BUF_GAP_END_ADDR (buf) + coding->src_pos_byte; |
df7492f9 | 1048 | else |
2cb26057 | 1049 | coding->source = BUF_BYTE_ADDRESS (buf, coding->src_pos_byte); |
aa72b389 | 1050 | } |
df7492f9 | 1051 | else if (STRINGP (coding->src_object)) |
aa72b389 | 1052 | { |
8f924df7 | 1053 | coding->source = SDATA (coding->src_object) + coding->src_pos_byte; |
aa72b389 | 1054 | } |
df7492f9 KH |
1055 | else |
1056 | /* Otherwise, the source is C string and is never relocated | |
1057 | automatically. Thus we don't have to update anything. */ | |
1058 | ; | |
1059 | } | |
aa72b389 | 1060 | |
df7492f9 KH |
1061 | static void |
1062 | coding_set_destination (coding) | |
1063 | struct coding_system *coding; | |
1064 | { | |
1065 | if (BUFFERP (coding->dst_object)) | |
aa72b389 | 1066 | { |
df7492f9 | 1067 | if (coding->src_pos < 0) |
aa72b389 | 1068 | { |
13818c30 | 1069 | coding->destination = BEG_ADDR + coding->dst_pos_byte - BEG_BYTE; |
28f67a95 KH |
1070 | coding->dst_bytes = (GAP_END_ADDR |
1071 | - (coding->src_bytes - coding->consumed) | |
1072 | - coding->destination); | |
aa72b389 | 1073 | } |
df7492f9 | 1074 | else |
28f67a95 KH |
1075 | { |
1076 | /* We are sure that coding->dst_pos_byte is before the gap | |
1077 | of the buffer. */ | |
1078 | coding->destination = (BUF_BEG_ADDR (XBUFFER (coding->dst_object)) | |
13818c30 | 1079 | + coding->dst_pos_byte - BEG_BYTE); |
28f67a95 KH |
1080 | coding->dst_bytes = (BUF_GAP_END_ADDR (XBUFFER (coding->dst_object)) |
1081 | - coding->destination); | |
1082 | } | |
df7492f9 KH |
1083 | } |
1084 | else | |
1085 | /* Otherwise, the destination is C string and is never relocated | |
1086 | automatically. Thus we don't have to update anything. */ | |
1087 | ; | |
1088 | } | |
1089 | ||
1090 | ||
1091 | static void | |
1092 | coding_alloc_by_realloc (coding, bytes) | |
1093 | struct coding_system *coding; | |
1094 | EMACS_INT bytes; | |
1095 | { | |
1096 | coding->destination = (unsigned char *) xrealloc (coding->destination, | |
1097 | coding->dst_bytes + bytes); | |
1098 | coding->dst_bytes += bytes; | |
1099 | } | |
1100 | ||
1101 | static void | |
db274c7a | 1102 | coding_alloc_by_making_gap (coding, gap_head_used, bytes) |
df7492f9 | 1103 | struct coding_system *coding; |
db274c7a | 1104 | EMACS_INT gap_head_used, bytes; |
df7492f9 | 1105 | { |
db274c7a | 1106 | if (EQ (coding->src_object, coding->dst_object)) |
df7492f9 | 1107 | { |
db274c7a KH |
1108 | /* The gap may contain the produced data at the head and not-yet |
1109 | consumed data at the tail. To preserve those data, we at | |
1110 | first make the gap size to zero, then increase the gap | |
1111 | size. */ | |
1112 | EMACS_INT add = GAP_SIZE; | |
1113 | ||
1114 | GPT += gap_head_used, GPT_BYTE += gap_head_used; | |
1115 | GAP_SIZE = 0; ZV += add; Z += add; ZV_BYTE += add; Z_BYTE += add; | |
df7492f9 KH |
1116 | make_gap (bytes); |
1117 | GAP_SIZE += add; ZV -= add; Z -= add; ZV_BYTE -= add; Z_BYTE -= add; | |
db274c7a | 1118 | GPT -= gap_head_used, GPT_BYTE -= gap_head_used; |
df7492f9 | 1119 | } |
730fff51 | 1120 | else |
df7492f9 | 1121 | { |
2c78b7e1 KH |
1122 | Lisp_Object this_buffer; |
1123 | ||
1124 | this_buffer = Fcurrent_buffer (); | |
df7492f9 KH |
1125 | set_buffer_internal (XBUFFER (coding->dst_object)); |
1126 | make_gap (bytes); | |
1127 | set_buffer_internal (XBUFFER (this_buffer)); | |
aa72b389 | 1128 | } |
df7492f9 | 1129 | } |
8f924df7 | 1130 | |
df7492f9 KH |
1131 | |
1132 | static unsigned char * | |
1133 | alloc_destination (coding, nbytes, dst) | |
1134 | struct coding_system *coding; | |
3e139625 | 1135 | EMACS_INT nbytes; |
df7492f9 KH |
1136 | unsigned char *dst; |
1137 | { | |
1138 | EMACS_INT offset = dst - coding->destination; | |
1139 | ||
1140 | if (BUFFERP (coding->dst_object)) | |
db274c7a KH |
1141 | { |
1142 | struct buffer *buf = XBUFFER (coding->dst_object); | |
1143 | ||
1144 | coding_alloc_by_making_gap (coding, dst - BUF_GPT_ADDR (buf), nbytes); | |
1145 | } | |
aa72b389 | 1146 | else |
df7492f9 | 1147 | coding_alloc_by_realloc (coding, nbytes); |
065e3595 | 1148 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
1149 | coding_set_destination (coding); |
1150 | dst = coding->destination + offset; | |
1151 | return dst; | |
1152 | } | |
aa72b389 | 1153 | |
ff0dacd7 KH |
1154 | /** Macros for annotations. */ |
1155 | ||
1156 | /* Maximum length of annotation data (sum of annotations for | |
1157 | composition and charset). */ | |
69a80ea3 | 1158 | #define MAX_ANNOTATION_LENGTH (4 + (MAX_COMPOSITION_COMPONENTS * 2) - 1 + 4) |
ff0dacd7 KH |
1159 | |
1160 | /* An annotation data is stored in the array coding->charbuf in this | |
1161 | format: | |
69a80ea3 | 1162 | [ -LENGTH ANNOTATION_MASK NCHARS ... ] |
ff0dacd7 KH |
1163 | LENGTH is the number of elements in the annotation. |
1164 | ANNOTATION_MASK is one of CODING_ANNOTATE_XXX_MASK. | |
69a80ea3 | 1165 | NCHARS is the number of characters in the text annotated. |
ff0dacd7 KH |
1166 | |
1167 | The format of the following elements depend on ANNOTATION_MASK. | |
1168 | ||
1169 | In the case of CODING_ANNOTATE_COMPOSITION_MASK, these elements | |
1170 | follows: | |
1171 | ... METHOD [ COMPOSITION-COMPONENTS ... ] | |
1172 | METHOD is one of enum composition_method. | |
1173 | Optionnal COMPOSITION-COMPONENTS are characters and composition | |
1174 | rules. | |
1175 | ||
1176 | In the case of CODING_ANNOTATE_CHARSET_MASK, one element CHARSET-ID | |
1177 | follows. */ | |
1178 | ||
69a80ea3 | 1179 | #define ADD_ANNOTATION_DATA(buf, len, mask, nchars) \ |
ff0dacd7 KH |
1180 | do { \ |
1181 | *(buf)++ = -(len); \ | |
1182 | *(buf)++ = (mask); \ | |
69a80ea3 | 1183 | *(buf)++ = (nchars); \ |
ff0dacd7 KH |
1184 | coding->annotated = 1; \ |
1185 | } while (0); | |
1186 | ||
69a80ea3 KH |
1187 | #define ADD_COMPOSITION_DATA(buf, nchars, method) \ |
1188 | do { \ | |
1189 | ADD_ANNOTATION_DATA (buf, 4, CODING_ANNOTATE_COMPOSITION_MASK, nchars); \ | |
1190 | *buf++ = method; \ | |
ff0dacd7 KH |
1191 | } while (0) |
1192 | ||
1193 | ||
69a80ea3 KH |
1194 | #define ADD_CHARSET_DATA(buf, nchars, id) \ |
1195 | do { \ | |
1196 | ADD_ANNOTATION_DATA (buf, 4, CODING_ANNOTATE_CHARSET_MASK, nchars); \ | |
1197 | *buf++ = id; \ | |
ff0dacd7 KH |
1198 | } while (0) |
1199 | ||
df7492f9 KH |
1200 | \f |
1201 | /*** 2. Emacs' internal format (emacs-utf-8) ***/ | |
1202 | ||
1203 | ||
1204 | ||
1205 | \f | |
1206 | /*** 3. UTF-8 ***/ | |
1207 | ||
1208 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
ff0dacd7 KH |
1209 | Check if a text is encoded in UTF-8. If it is, return 1, else |
1210 | return 0. */ | |
df7492f9 KH |
1211 | |
1212 | #define UTF_8_1_OCTET_P(c) ((c) < 0x80) | |
1213 | #define UTF_8_EXTRA_OCTET_P(c) (((c) & 0xC0) == 0x80) | |
1214 | #define UTF_8_2_OCTET_LEADING_P(c) (((c) & 0xE0) == 0xC0) | |
1215 | #define UTF_8_3_OCTET_LEADING_P(c) (((c) & 0xF0) == 0xE0) | |
1216 | #define UTF_8_4_OCTET_LEADING_P(c) (((c) & 0xF8) == 0xF0) | |
1217 | #define UTF_8_5_OCTET_LEADING_P(c) (((c) & 0xFC) == 0xF8) | |
1218 | ||
1219 | static int | |
ff0dacd7 | 1220 | detect_coding_utf_8 (coding, detect_info) |
df7492f9 | 1221 | struct coding_system *coding; |
ff0dacd7 | 1222 | struct coding_detection_info *detect_info; |
df7492f9 | 1223 | { |
065e3595 | 1224 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 1225 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
1226 | int multibytep = coding->src_multibyte; |
1227 | int consumed_chars = 0; | |
1228 | int found = 0; | |
1229 | ||
ff0dacd7 | 1230 | detect_info->checked |= CATEGORY_MASK_UTF_8; |
df7492f9 KH |
1231 | /* A coding system of this category is always ASCII compatible. */ |
1232 | src += coding->head_ascii; | |
1233 | ||
1234 | while (1) | |
aa72b389 | 1235 | { |
df7492f9 | 1236 | int c, c1, c2, c3, c4; |
aa72b389 | 1237 | |
065e3595 | 1238 | src_base = src; |
df7492f9 | 1239 | ONE_MORE_BYTE (c); |
065e3595 | 1240 | if (c < 0 || UTF_8_1_OCTET_P (c)) |
df7492f9 KH |
1241 | continue; |
1242 | ONE_MORE_BYTE (c1); | |
065e3595 | 1243 | if (c1 < 0 || ! UTF_8_EXTRA_OCTET_P (c1)) |
df7492f9 KH |
1244 | break; |
1245 | if (UTF_8_2_OCTET_LEADING_P (c)) | |
aa72b389 | 1246 | { |
ff0dacd7 | 1247 | found = CATEGORY_MASK_UTF_8; |
df7492f9 | 1248 | continue; |
aa72b389 | 1249 | } |
df7492f9 | 1250 | ONE_MORE_BYTE (c2); |
065e3595 | 1251 | if (c2 < 0 || ! UTF_8_EXTRA_OCTET_P (c2)) |
df7492f9 KH |
1252 | break; |
1253 | if (UTF_8_3_OCTET_LEADING_P (c)) | |
aa72b389 | 1254 | { |
ff0dacd7 | 1255 | found = CATEGORY_MASK_UTF_8; |
df7492f9 | 1256 | continue; |
aa72b389 | 1257 | } |
df7492f9 | 1258 | ONE_MORE_BYTE (c3); |
065e3595 | 1259 | if (c3 < 0 || ! UTF_8_EXTRA_OCTET_P (c3)) |
df7492f9 KH |
1260 | break; |
1261 | if (UTF_8_4_OCTET_LEADING_P (c)) | |
aa72b389 | 1262 | { |
ff0dacd7 | 1263 | found = CATEGORY_MASK_UTF_8; |
df7492f9 KH |
1264 | continue; |
1265 | } | |
1266 | ONE_MORE_BYTE (c4); | |
065e3595 | 1267 | if (c4 < 0 || ! UTF_8_EXTRA_OCTET_P (c4)) |
df7492f9 KH |
1268 | break; |
1269 | if (UTF_8_5_OCTET_LEADING_P (c)) | |
1270 | { | |
ff0dacd7 | 1271 | found = CATEGORY_MASK_UTF_8; |
df7492f9 KH |
1272 | continue; |
1273 | } | |
1274 | break; | |
aa72b389 | 1275 | } |
ff0dacd7 | 1276 | detect_info->rejected |= CATEGORY_MASK_UTF_8; |
df7492f9 | 1277 | return 0; |
aa72b389 | 1278 | |
df7492f9 | 1279 | no_more_source: |
065e3595 | 1280 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
aa72b389 | 1281 | { |
ff0dacd7 | 1282 | detect_info->rejected |= CATEGORY_MASK_UTF_8; |
89528eb3 | 1283 | return 0; |
aa72b389 | 1284 | } |
ff0dacd7 KH |
1285 | detect_info->found |= found; |
1286 | return 1; | |
aa72b389 KH |
1287 | } |
1288 | ||
4ed46869 | 1289 | |
b73bfc1c | 1290 | static void |
df7492f9 | 1291 | decode_coding_utf_8 (coding) |
b73bfc1c | 1292 | struct coding_system *coding; |
b73bfc1c | 1293 | { |
8f924df7 KH |
1294 | const unsigned char *src = coding->source + coding->consumed; |
1295 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
1296 | const unsigned char *src_base; | |
69a80ea3 KH |
1297 | int *charbuf = coding->charbuf + coding->charbuf_used; |
1298 | int *charbuf_end = coding->charbuf + coding->charbuf_size; | |
df7492f9 KH |
1299 | int consumed_chars = 0, consumed_chars_base; |
1300 | int multibytep = coding->src_multibyte; | |
24a73b0a | 1301 | Lisp_Object attr, charset_list; |
119852e7 KH |
1302 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
1303 | int byte_after_cr = -1; | |
4ed46869 | 1304 | |
24a73b0a | 1305 | CODING_GET_INFO (coding, attr, charset_list); |
df7492f9 KH |
1306 | |
1307 | while (1) | |
b73bfc1c | 1308 | { |
df7492f9 | 1309 | int c, c1, c2, c3, c4, c5; |
ec6d2bb8 | 1310 | |
df7492f9 KH |
1311 | src_base = src; |
1312 | consumed_chars_base = consumed_chars; | |
4af310db | 1313 | |
df7492f9 KH |
1314 | if (charbuf >= charbuf_end) |
1315 | break; | |
1316 | ||
119852e7 KH |
1317 | if (byte_after_cr >= 0) |
1318 | c1 = byte_after_cr, byte_after_cr = -1; | |
1319 | else | |
1320 | ONE_MORE_BYTE (c1); | |
065e3595 KH |
1321 | if (c1 < 0) |
1322 | { | |
1323 | c = - c1; | |
1324 | } | |
1325 | else if (UTF_8_1_OCTET_P(c1)) | |
df7492f9 | 1326 | { |
119852e7 KH |
1327 | if (eol_crlf && c1 == '\r') |
1328 | ONE_MORE_BYTE (byte_after_cr); | |
df7492f9 | 1329 | c = c1; |
4af310db | 1330 | } |
df7492f9 | 1331 | else |
4af310db | 1332 | { |
df7492f9 | 1333 | ONE_MORE_BYTE (c2); |
065e3595 | 1334 | if (c2 < 0 || ! UTF_8_EXTRA_OCTET_P (c2)) |
df7492f9 KH |
1335 | goto invalid_code; |
1336 | if (UTF_8_2_OCTET_LEADING_P (c1)) | |
4af310db | 1337 | { |
b0edb2c5 DL |
1338 | c = ((c1 & 0x1F) << 6) | (c2 & 0x3F); |
1339 | /* Reject overlong sequences here and below. Encoders | |
1340 | producing them are incorrect, they can be misleading, | |
1341 | and they mess up read/write invariance. */ | |
1342 | if (c < 128) | |
1343 | goto invalid_code; | |
4af310db | 1344 | } |
df7492f9 | 1345 | else |
aa72b389 | 1346 | { |
df7492f9 | 1347 | ONE_MORE_BYTE (c3); |
065e3595 | 1348 | if (c3 < 0 || ! UTF_8_EXTRA_OCTET_P (c3)) |
df7492f9 KH |
1349 | goto invalid_code; |
1350 | if (UTF_8_3_OCTET_LEADING_P (c1)) | |
b0edb2c5 DL |
1351 | { |
1352 | c = (((c1 & 0xF) << 12) | |
1353 | | ((c2 & 0x3F) << 6) | (c3 & 0x3F)); | |
72fe1301 DL |
1354 | if (c < 0x800 |
1355 | || (c >= 0xd800 && c < 0xe000)) /* surrogates (invalid) */ | |
b0edb2c5 DL |
1356 | goto invalid_code; |
1357 | } | |
df7492f9 KH |
1358 | else |
1359 | { | |
1360 | ONE_MORE_BYTE (c4); | |
065e3595 | 1361 | if (c4 < 0 || ! UTF_8_EXTRA_OCTET_P (c4)) |
df7492f9 KH |
1362 | goto invalid_code; |
1363 | if (UTF_8_4_OCTET_LEADING_P (c1)) | |
b0edb2c5 | 1364 | { |
df7492f9 KH |
1365 | c = (((c1 & 0x7) << 18) | ((c2 & 0x3F) << 12) |
1366 | | ((c3 & 0x3F) << 6) | (c4 & 0x3F)); | |
b0edb2c5 DL |
1367 | if (c < 0x10000) |
1368 | goto invalid_code; | |
1369 | } | |
df7492f9 KH |
1370 | else |
1371 | { | |
1372 | ONE_MORE_BYTE (c5); | |
065e3595 | 1373 | if (c5 < 0 || ! UTF_8_EXTRA_OCTET_P (c5)) |
df7492f9 KH |
1374 | goto invalid_code; |
1375 | if (UTF_8_5_OCTET_LEADING_P (c1)) | |
1376 | { | |
1377 | c = (((c1 & 0x3) << 24) | ((c2 & 0x3F) << 18) | |
1378 | | ((c3 & 0x3F) << 12) | ((c4 & 0x3F) << 6) | |
1379 | | (c5 & 0x3F)); | |
b0edb2c5 | 1380 | if ((c > MAX_CHAR) || (c < 0x200000)) |
df7492f9 KH |
1381 | goto invalid_code; |
1382 | } | |
1383 | else | |
1384 | goto invalid_code; | |
1385 | } | |
1386 | } | |
aa72b389 | 1387 | } |
b73bfc1c | 1388 | } |
df7492f9 KH |
1389 | |
1390 | *charbuf++ = c; | |
1391 | continue; | |
1392 | ||
1393 | invalid_code: | |
1394 | src = src_base; | |
1395 | consumed_chars = consumed_chars_base; | |
1396 | ONE_MORE_BYTE (c); | |
1397 | *charbuf++ = ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); | |
1398 | coding->errors++; | |
aa72b389 KH |
1399 | } |
1400 | ||
df7492f9 KH |
1401 | no_more_source: |
1402 | coding->consumed_char += consumed_chars_base; | |
1403 | coding->consumed = src_base - coding->source; | |
1404 | coding->charbuf_used = charbuf - coding->charbuf; | |
1405 | } | |
1406 | ||
1407 | ||
1408 | static int | |
1409 | encode_coding_utf_8 (coding) | |
1410 | struct coding_system *coding; | |
1411 | { | |
1412 | int multibytep = coding->dst_multibyte; | |
1413 | int *charbuf = coding->charbuf; | |
1414 | int *charbuf_end = charbuf + coding->charbuf_used; | |
1415 | unsigned char *dst = coding->destination + coding->produced; | |
1416 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
e19c3639 | 1417 | int produced_chars = 0; |
df7492f9 KH |
1418 | int c; |
1419 | ||
1420 | if (multibytep) | |
aa72b389 | 1421 | { |
df7492f9 KH |
1422 | int safe_room = MAX_MULTIBYTE_LENGTH * 2; |
1423 | ||
1424 | while (charbuf < charbuf_end) | |
b73bfc1c | 1425 | { |
df7492f9 | 1426 | unsigned char str[MAX_MULTIBYTE_LENGTH], *p, *pend = str; |
8f924df7 | 1427 | |
df7492f9 KH |
1428 | ASSURE_DESTINATION (safe_room); |
1429 | c = *charbuf++; | |
28f67a95 KH |
1430 | if (CHAR_BYTE8_P (c)) |
1431 | { | |
1432 | c = CHAR_TO_BYTE8 (c); | |
1433 | EMIT_ONE_BYTE (c); | |
1434 | } | |
1435 | else | |
1436 | { | |
db274c7a | 1437 | CHAR_STRING_ADVANCE_NO_UNIFY (c, pend); |
28f67a95 KH |
1438 | for (p = str; p < pend; p++) |
1439 | EMIT_ONE_BYTE (*p); | |
1440 | } | |
b73bfc1c | 1441 | } |
aa72b389 | 1442 | } |
df7492f9 KH |
1443 | else |
1444 | { | |
1445 | int safe_room = MAX_MULTIBYTE_LENGTH; | |
1446 | ||
1447 | while (charbuf < charbuf_end) | |
b73bfc1c | 1448 | { |
df7492f9 KH |
1449 | ASSURE_DESTINATION (safe_room); |
1450 | c = *charbuf++; | |
f03caae0 KH |
1451 | if (CHAR_BYTE8_P (c)) |
1452 | *dst++ = CHAR_TO_BYTE8 (c); | |
1453 | else | |
db274c7a | 1454 | CHAR_STRING_ADVANCE_NO_UNIFY (c, dst); |
df7492f9 | 1455 | produced_chars++; |
4ed46869 KH |
1456 | } |
1457 | } | |
065e3595 | 1458 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
1459 | coding->produced_char += produced_chars; |
1460 | coding->produced = dst - coding->destination; | |
1461 | return 0; | |
4ed46869 KH |
1462 | } |
1463 | ||
b73bfc1c | 1464 | |
df7492f9 | 1465 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". |
ff0dacd7 KH |
1466 | Check if a text is encoded in one of UTF-16 based coding systems. |
1467 | If it is, return 1, else return 0. */ | |
aa72b389 | 1468 | |
df7492f9 KH |
1469 | #define UTF_16_HIGH_SURROGATE_P(val) \ |
1470 | (((val) & 0xFC00) == 0xD800) | |
1471 | ||
1472 | #define UTF_16_LOW_SURROGATE_P(val) \ | |
1473 | (((val) & 0xFC00) == 0xDC00) | |
93dec019 | 1474 | |
df7492f9 KH |
1475 | #define UTF_16_INVALID_P(val) \ |
1476 | (((val) == 0xFFFE) \ | |
1477 | || ((val) == 0xFFFF) \ | |
1478 | || UTF_16_LOW_SURROGATE_P (val)) | |
aa72b389 | 1479 | |
aa72b389 | 1480 | |
df7492f9 | 1481 | static int |
ff0dacd7 | 1482 | detect_coding_utf_16 (coding, detect_info) |
aa72b389 | 1483 | struct coding_system *coding; |
ff0dacd7 | 1484 | struct coding_detection_info *detect_info; |
aa72b389 | 1485 | { |
8f924df7 KH |
1486 | const unsigned char *src = coding->source, *src_base = src; |
1487 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
df7492f9 KH |
1488 | int multibytep = coding->src_multibyte; |
1489 | int consumed_chars = 0; | |
1490 | int c1, c2; | |
aa72b389 | 1491 | |
ff0dacd7 | 1492 | detect_info->checked |= CATEGORY_MASK_UTF_16; |
ff0dacd7 | 1493 | if (coding->mode & CODING_MODE_LAST_BLOCK |
24a73b0a | 1494 | && (coding->src_chars & 1)) |
ff0dacd7 KH |
1495 | { |
1496 | detect_info->rejected |= CATEGORY_MASK_UTF_16; | |
1497 | return 0; | |
1498 | } | |
24a73b0a | 1499 | |
df7492f9 KH |
1500 | ONE_MORE_BYTE (c1); |
1501 | ONE_MORE_BYTE (c2); | |
df7492f9 | 1502 | if ((c1 == 0xFF) && (c2 == 0xFE)) |
aa72b389 | 1503 | { |
b49a1807 KH |
1504 | detect_info->found |= (CATEGORY_MASK_UTF_16_LE |
1505 | | CATEGORY_MASK_UTF_16_AUTO); | |
24a73b0a KH |
1506 | detect_info->rejected |= (CATEGORY_MASK_UTF_16_BE |
1507 | | CATEGORY_MASK_UTF_16_BE_NOSIG | |
1508 | | CATEGORY_MASK_UTF_16_LE_NOSIG); | |
aa72b389 | 1509 | } |
df7492f9 | 1510 | else if ((c1 == 0xFE) && (c2 == 0xFF)) |
ff0dacd7 | 1511 | { |
b49a1807 KH |
1512 | detect_info->found |= (CATEGORY_MASK_UTF_16_BE |
1513 | | CATEGORY_MASK_UTF_16_AUTO); | |
24a73b0a KH |
1514 | detect_info->rejected |= (CATEGORY_MASK_UTF_16_LE |
1515 | | CATEGORY_MASK_UTF_16_BE_NOSIG | |
1516 | | CATEGORY_MASK_UTF_16_LE_NOSIG); | |
1517 | } | |
2f3cbb32 | 1518 | else |
24a73b0a | 1519 | { |
2f3cbb32 KH |
1520 | /* We check the dispersion of Eth and Oth bytes where E is even and |
1521 | O is odd. If both are high, we assume binary data.*/ | |
1522 | unsigned char e[256], o[256]; | |
1523 | unsigned e_num = 1, o_num = 1; | |
1524 | ||
1525 | memset (e, 0, 256); | |
1526 | memset (o, 0, 256); | |
1527 | e[c1] = 1; | |
1528 | o[c2] = 1; | |
1529 | ||
24a73b0a KH |
1530 | detect_info->rejected |
1531 | |= (CATEGORY_MASK_UTF_16_BE | CATEGORY_MASK_UTF_16_LE); | |
2f3cbb32 KH |
1532 | |
1533 | while (1) | |
1534 | { | |
1535 | ONE_MORE_BYTE (c1); | |
1536 | ONE_MORE_BYTE (c2); | |
1537 | if (! e[c1]) | |
1538 | { | |
1539 | e[c1] = 1; | |
1540 | e_num++; | |
1541 | if (e_num >= 128) | |
1542 | break; | |
1543 | } | |
1544 | if (! o[c2]) | |
1545 | { | |
1546 | o[c1] = 1; | |
1547 | o_num++; | |
1548 | if (o_num >= 128) | |
1549 | break; | |
1550 | } | |
1551 | } | |
1552 | detect_info->rejected |= CATEGORY_MASK_UTF_16; | |
1553 | return 0; | |
ff0dacd7 | 1554 | } |
2f3cbb32 | 1555 | |
df7492f9 | 1556 | no_more_source: |
ff0dacd7 | 1557 | return 1; |
df7492f9 | 1558 | } |
aa72b389 | 1559 | |
df7492f9 KH |
1560 | static void |
1561 | decode_coding_utf_16 (coding) | |
1562 | struct coding_system *coding; | |
1563 | { | |
8f924df7 KH |
1564 | const unsigned char *src = coding->source + coding->consumed; |
1565 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
1566 | const unsigned char *src_base; | |
69a80ea3 KH |
1567 | int *charbuf = coding->charbuf + coding->charbuf_used; |
1568 | int *charbuf_end = coding->charbuf + coding->charbuf_size; | |
df7492f9 KH |
1569 | int consumed_chars = 0, consumed_chars_base; |
1570 | int multibytep = coding->src_multibyte; | |
1571 | enum utf_16_bom_type bom = CODING_UTF_16_BOM (coding); | |
1572 | enum utf_16_endian_type endian = CODING_UTF_16_ENDIAN (coding); | |
1573 | int surrogate = CODING_UTF_16_SURROGATE (coding); | |
24a73b0a | 1574 | Lisp_Object attr, charset_list; |
119852e7 KH |
1575 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
1576 | int byte_after_cr1 = -1, byte_after_cr2 = -1; | |
df7492f9 | 1577 | |
24a73b0a | 1578 | CODING_GET_INFO (coding, attr, charset_list); |
df7492f9 | 1579 | |
b49a1807 | 1580 | if (bom == utf_16_with_bom) |
aa72b389 | 1581 | { |
df7492f9 | 1582 | int c, c1, c2; |
4af310db | 1583 | |
aa72b389 | 1584 | src_base = src; |
df7492f9 KH |
1585 | ONE_MORE_BYTE (c1); |
1586 | ONE_MORE_BYTE (c2); | |
e19c3639 | 1587 | c = (c1 << 8) | c2; |
aa72b389 | 1588 | |
b49a1807 KH |
1589 | if (endian == utf_16_big_endian |
1590 | ? c != 0xFEFF : c != 0xFFFE) | |
aa72b389 | 1591 | { |
b49a1807 KH |
1592 | /* The first two bytes are not BOM. Treat them as bytes |
1593 | for a normal character. */ | |
1594 | src = src_base; | |
1595 | coding->errors++; | |
aa72b389 | 1596 | } |
b49a1807 KH |
1597 | CODING_UTF_16_BOM (coding) = utf_16_without_bom; |
1598 | } | |
1599 | else if (bom == utf_16_detect_bom) | |
1600 | { | |
1601 | /* We have already tried to detect BOM and failed in | |
1602 | detect_coding. */ | |
1603 | CODING_UTF_16_BOM (coding) = utf_16_without_bom; | |
df7492f9 | 1604 | } |
aa72b389 | 1605 | |
df7492f9 KH |
1606 | while (1) |
1607 | { | |
1608 | int c, c1, c2; | |
1609 | ||
1610 | src_base = src; | |
1611 | consumed_chars_base = consumed_chars; | |
1612 | ||
1613 | if (charbuf + 2 >= charbuf_end) | |
1614 | break; | |
1615 | ||
119852e7 KH |
1616 | if (byte_after_cr1 >= 0) |
1617 | c1 = byte_after_cr1, byte_after_cr1 = -1; | |
1618 | else | |
1619 | ONE_MORE_BYTE (c1); | |
065e3595 KH |
1620 | if (c1 < 0) |
1621 | { | |
1622 | *charbuf++ = -c1; | |
1623 | continue; | |
1624 | } | |
119852e7 KH |
1625 | if (byte_after_cr2 >= 0) |
1626 | c2 = byte_after_cr2, byte_after_cr2 = -1; | |
1627 | else | |
1628 | ONE_MORE_BYTE (c2); | |
065e3595 KH |
1629 | if (c2 < 0) |
1630 | { | |
1631 | *charbuf++ = ASCII_BYTE_P (c1) ? c1 : BYTE8_TO_CHAR (c1); | |
1632 | *charbuf++ = -c2; | |
1633 | continue; | |
1634 | } | |
df7492f9 | 1635 | c = (endian == utf_16_big_endian |
e19c3639 | 1636 | ? ((c1 << 8) | c2) : ((c2 << 8) | c1)); |
119852e7 | 1637 | |
df7492f9 | 1638 | if (surrogate) |
fd3ae0b9 | 1639 | { |
df7492f9 | 1640 | if (! UTF_16_LOW_SURROGATE_P (c)) |
fd3ae0b9 | 1641 | { |
df7492f9 KH |
1642 | if (endian == utf_16_big_endian) |
1643 | c1 = surrogate >> 8, c2 = surrogate & 0xFF; | |
1644 | else | |
1645 | c1 = surrogate & 0xFF, c2 = surrogate >> 8; | |
1646 | *charbuf++ = c1; | |
1647 | *charbuf++ = c2; | |
1648 | coding->errors++; | |
1649 | if (UTF_16_HIGH_SURROGATE_P (c)) | |
1650 | CODING_UTF_16_SURROGATE (coding) = surrogate = c; | |
fd3ae0b9 | 1651 | else |
df7492f9 | 1652 | *charbuf++ = c; |
fd3ae0b9 KH |
1653 | } |
1654 | else | |
df7492f9 KH |
1655 | { |
1656 | c = ((surrogate - 0xD800) << 10) | (c - 0xDC00); | |
1657 | CODING_UTF_16_SURROGATE (coding) = surrogate = 0; | |
29f7ffd0 | 1658 | *charbuf++ = 0x10000 + c; |
df7492f9 | 1659 | } |
fd3ae0b9 | 1660 | } |
aa72b389 | 1661 | else |
df7492f9 KH |
1662 | { |
1663 | if (UTF_16_HIGH_SURROGATE_P (c)) | |
1664 | CODING_UTF_16_SURROGATE (coding) = surrogate = c; | |
1665 | else | |
119852e7 KH |
1666 | { |
1667 | if (eol_crlf && c == '\r') | |
1668 | { | |
1669 | ONE_MORE_BYTE (byte_after_cr1); | |
1670 | ONE_MORE_BYTE (byte_after_cr2); | |
1671 | } | |
1672 | *charbuf++ = c; | |
1673 | } | |
8f924df7 | 1674 | } |
aa72b389 | 1675 | } |
df7492f9 KH |
1676 | |
1677 | no_more_source: | |
1678 | coding->consumed_char += consumed_chars_base; | |
1679 | coding->consumed = src_base - coding->source; | |
1680 | coding->charbuf_used = charbuf - coding->charbuf; | |
aa72b389 | 1681 | } |
b73bfc1c | 1682 | |
df7492f9 KH |
1683 | static int |
1684 | encode_coding_utf_16 (coding) | |
1685 | struct coding_system *coding; | |
1686 | { | |
1687 | int multibytep = coding->dst_multibyte; | |
1688 | int *charbuf = coding->charbuf; | |
1689 | int *charbuf_end = charbuf + coding->charbuf_used; | |
1690 | unsigned char *dst = coding->destination + coding->produced; | |
1691 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
1692 | int safe_room = 8; | |
1693 | enum utf_16_bom_type bom = CODING_UTF_16_BOM (coding); | |
1694 | int big_endian = CODING_UTF_16_ENDIAN (coding) == utf_16_big_endian; | |
1695 | int produced_chars = 0; | |
24a73b0a | 1696 | Lisp_Object attrs, charset_list; |
df7492f9 | 1697 | int c; |
4ed46869 | 1698 | |
24a73b0a | 1699 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 | 1700 | |
b49a1807 | 1701 | if (bom != utf_16_without_bom) |
df7492f9 KH |
1702 | { |
1703 | ASSURE_DESTINATION (safe_room); | |
1704 | if (big_endian) | |
df7492f9 | 1705 | EMIT_TWO_BYTES (0xFE, 0xFF); |
880cf180 KH |
1706 | else |
1707 | EMIT_TWO_BYTES (0xFF, 0xFE); | |
df7492f9 KH |
1708 | CODING_UTF_16_BOM (coding) = utf_16_without_bom; |
1709 | } | |
1710 | ||
1711 | while (charbuf < charbuf_end) | |
1712 | { | |
1713 | ASSURE_DESTINATION (safe_room); | |
1714 | c = *charbuf++; | |
e19c3639 KH |
1715 | if (c >= MAX_UNICODE_CHAR) |
1716 | c = coding->default_char; | |
df7492f9 KH |
1717 | |
1718 | if (c < 0x10000) | |
1719 | { | |
1720 | if (big_endian) | |
1721 | EMIT_TWO_BYTES (c >> 8, c & 0xFF); | |
1722 | else | |
1723 | EMIT_TWO_BYTES (c & 0xFF, c >> 8); | |
1724 | } | |
1725 | else | |
1726 | { | |
1727 | int c1, c2; | |
1728 | ||
1729 | c -= 0x10000; | |
1730 | c1 = (c >> 10) + 0xD800; | |
1731 | c2 = (c & 0x3FF) + 0xDC00; | |
1732 | if (big_endian) | |
1733 | EMIT_FOUR_BYTES (c1 >> 8, c1 & 0xFF, c2 >> 8, c2 & 0xFF); | |
1734 | else | |
1735 | EMIT_FOUR_BYTES (c1 & 0xFF, c1 >> 8, c2 & 0xFF, c2 >> 8); | |
1736 | } | |
1737 | } | |
065e3595 | 1738 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
1739 | coding->produced = dst - coding->destination; |
1740 | coding->produced_char += produced_chars; | |
1741 | return 0; | |
1742 | } | |
1743 | ||
1744 | \f | |
1745 | /*** 6. Old Emacs' internal format (emacs-mule) ***/ | |
1746 | ||
1747 | /* Emacs' internal format for representation of multiple character | |
1748 | sets is a kind of multi-byte encoding, i.e. characters are | |
1749 | represented by variable-length sequences of one-byte codes. | |
1750 | ||
1751 | ASCII characters and control characters (e.g. `tab', `newline') are | |
1752 | represented by one-byte sequences which are their ASCII codes, in | |
1753 | the range 0x00 through 0x7F. | |
1754 | ||
1755 | 8-bit characters of the range 0x80..0x9F are represented by | |
1756 | two-byte sequences of LEADING_CODE_8_BIT_CONTROL and (their 8-bit | |
1757 | code + 0x20). | |
1758 | ||
1759 | 8-bit characters of the range 0xA0..0xFF are represented by | |
1760 | one-byte sequences which are their 8-bit code. | |
1761 | ||
1762 | The other characters are represented by a sequence of `base | |
1763 | leading-code', optional `extended leading-code', and one or two | |
1764 | `position-code's. The length of the sequence is determined by the | |
1765 | base leading-code. Leading-code takes the range 0x81 through 0x9D, | |
1766 | whereas extended leading-code and position-code take the range 0xA0 | |
1767 | through 0xFF. See `charset.h' for more details about leading-code | |
1768 | and position-code. | |
1769 | ||
1770 | --- CODE RANGE of Emacs' internal format --- | |
1771 | character set range | |
1772 | ------------- ----- | |
1773 | ascii 0x00..0x7F | |
1774 | eight-bit-control LEADING_CODE_8_BIT_CONTROL + 0xA0..0xBF | |
1775 | eight-bit-graphic 0xA0..0xBF | |
1776 | ELSE 0x81..0x9D + [0xA0..0xFF]+ | |
1777 | --------------------------------------------- | |
1778 | ||
1779 | As this is the internal character representation, the format is | |
1780 | usually not used externally (i.e. in a file or in a data sent to a | |
1781 | process). But, it is possible to have a text externally in this | |
1782 | format (i.e. by encoding by the coding system `emacs-mule'). | |
1783 | ||
1784 | In that case, a sequence of one-byte codes has a slightly different | |
1785 | form. | |
1786 | ||
1787 | At first, all characters in eight-bit-control are represented by | |
1788 | one-byte sequences which are their 8-bit code. | |
1789 | ||
1790 | Next, character composition data are represented by the byte | |
1791 | sequence of the form: 0x80 METHOD BYTES CHARS COMPONENT ..., | |
1792 | where, | |
1793 | METHOD is 0xF0 plus one of composition method (enum | |
1794 | composition_method), | |
1795 | ||
1796 | BYTES is 0xA0 plus a byte length of this composition data, | |
1797 | ||
1798 | CHARS is 0x20 plus a number of characters composed by this | |
1799 | data, | |
1800 | ||
1801 | COMPONENTs are characters of multibye form or composition | |
1802 | rules encoded by two-byte of ASCII codes. | |
1803 | ||
1804 | In addition, for backward compatibility, the following formats are | |
1805 | also recognized as composition data on decoding. | |
1806 | ||
1807 | 0x80 MSEQ ... | |
1808 | 0x80 0xFF MSEQ RULE MSEQ RULE ... MSEQ | |
1809 | ||
1810 | Here, | |
1811 | MSEQ is a multibyte form but in these special format: | |
1812 | ASCII: 0xA0 ASCII_CODE+0x80, | |
1813 | other: LEADING_CODE+0x20 FOLLOWING-BYTE ..., | |
1814 | RULE is a one byte code of the range 0xA0..0xF0 that | |
1815 | represents a composition rule. | |
1816 | */ | |
1817 | ||
1818 | char emacs_mule_bytes[256]; | |
1819 | ||
df7492f9 | 1820 | int |
ff0dacd7 | 1821 | emacs_mule_char (coding, src, nbytes, nchars, id) |
df7492f9 | 1822 | struct coding_system *coding; |
065e3595 | 1823 | const unsigned char *src; |
ff0dacd7 | 1824 | int *nbytes, *nchars, *id; |
df7492f9 | 1825 | { |
8f924df7 KH |
1826 | const unsigned char *src_end = coding->source + coding->src_bytes; |
1827 | const unsigned char *src_base = src; | |
df7492f9 | 1828 | int multibytep = coding->src_multibyte; |
df7492f9 KH |
1829 | struct charset *charset; |
1830 | unsigned code; | |
1831 | int c; | |
1832 | int consumed_chars = 0; | |
1833 | ||
1834 | ONE_MORE_BYTE (c); | |
065e3595 | 1835 | if (c < 0) |
df7492f9 | 1836 | { |
065e3595 KH |
1837 | c = -c; |
1838 | charset = emacs_mule_charset[0]; | |
1839 | } | |
1840 | else | |
1841 | { | |
4d41e8b7 KH |
1842 | if (c >= 0xA0) |
1843 | { | |
b3af4b28 | 1844 | /* Old style component character of a composition. */ |
4d41e8b7 KH |
1845 | if (c == 0xA0) |
1846 | { | |
1847 | ONE_MORE_BYTE (c); | |
1848 | c -= 0x80; | |
1849 | } | |
1850 | else | |
1851 | c -= 0x20; | |
1852 | } | |
1853 | ||
065e3595 | 1854 | switch (emacs_mule_bytes[c]) |
b73bfc1c | 1855 | { |
065e3595 | 1856 | case 2: |
df7492f9 KH |
1857 | if (! (charset = emacs_mule_charset[c])) |
1858 | goto invalid_code; | |
1859 | ONE_MORE_BYTE (c); | |
9ffd559c | 1860 | if (c < 0xA0) |
065e3595 | 1861 | goto invalid_code; |
df7492f9 | 1862 | code = c & 0x7F; |
065e3595 KH |
1863 | break; |
1864 | ||
1865 | case 3: | |
1866 | if (c == EMACS_MULE_LEADING_CODE_PRIVATE_11 | |
1867 | || c == EMACS_MULE_LEADING_CODE_PRIVATE_12) | |
1868 | { | |
1869 | ONE_MORE_BYTE (c); | |
9ffd559c | 1870 | if (c < 0xA0 || ! (charset = emacs_mule_charset[c])) |
065e3595 KH |
1871 | goto invalid_code; |
1872 | ONE_MORE_BYTE (c); | |
9ffd559c | 1873 | if (c < 0xA0) |
065e3595 KH |
1874 | goto invalid_code; |
1875 | code = c & 0x7F; | |
1876 | } | |
1877 | else | |
1878 | { | |
1879 | if (! (charset = emacs_mule_charset[c])) | |
1880 | goto invalid_code; | |
1881 | ONE_MORE_BYTE (c); | |
9ffd559c | 1882 | if (c < 0xA0) |
065e3595 KH |
1883 | goto invalid_code; |
1884 | code = (c & 0x7F) << 8; | |
1885 | ONE_MORE_BYTE (c); | |
9ffd559c | 1886 | if (c < 0xA0) |
065e3595 KH |
1887 | goto invalid_code; |
1888 | code |= c & 0x7F; | |
1889 | } | |
1890 | break; | |
1891 | ||
1892 | case 4: | |
1893 | ONE_MORE_BYTE (c); | |
1894 | if (c < 0 || ! (charset = emacs_mule_charset[c])) | |
df7492f9 KH |
1895 | goto invalid_code; |
1896 | ONE_MORE_BYTE (c); | |
9ffd559c | 1897 | if (c < 0xA0) |
065e3595 | 1898 | goto invalid_code; |
781d7a48 | 1899 | code = (c & 0x7F) << 8; |
df7492f9 | 1900 | ONE_MORE_BYTE (c); |
9ffd559c | 1901 | if (c < 0xA0) |
065e3595 | 1902 | goto invalid_code; |
df7492f9 | 1903 | code |= c & 0x7F; |
065e3595 | 1904 | break; |
df7492f9 | 1905 | |
065e3595 KH |
1906 | case 1: |
1907 | code = c; | |
1908 | charset = CHARSET_FROM_ID (ASCII_BYTE_P (code) | |
1909 | ? charset_ascii : charset_eight_bit); | |
1910 | break; | |
df7492f9 | 1911 | |
065e3595 KH |
1912 | default: |
1913 | abort (); | |
1914 | } | |
1915 | c = DECODE_CHAR (charset, code); | |
1916 | if (c < 0) | |
1917 | goto invalid_code; | |
df7492f9 | 1918 | } |
df7492f9 KH |
1919 | *nbytes = src - src_base; |
1920 | *nchars = consumed_chars; | |
ff0dacd7 KH |
1921 | if (id) |
1922 | *id = charset->id; | |
df7492f9 KH |
1923 | return c; |
1924 | ||
1925 | no_more_source: | |
1926 | return -2; | |
1927 | ||
1928 | invalid_code: | |
1929 | return -1; | |
1930 | } | |
1931 | ||
1932 | ||
1933 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
ff0dacd7 KH |
1934 | Check if a text is encoded in `emacs-mule'. If it is, return 1, |
1935 | else return 0. */ | |
df7492f9 KH |
1936 | |
1937 | static int | |
ff0dacd7 | 1938 | detect_coding_emacs_mule (coding, detect_info) |
df7492f9 | 1939 | struct coding_system *coding; |
ff0dacd7 | 1940 | struct coding_detection_info *detect_info; |
df7492f9 | 1941 | { |
065e3595 | 1942 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 1943 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
1944 | int multibytep = coding->src_multibyte; |
1945 | int consumed_chars = 0; | |
1946 | int c; | |
1947 | int found = 0; | |
1948 | ||
ff0dacd7 | 1949 | detect_info->checked |= CATEGORY_MASK_EMACS_MULE; |
df7492f9 KH |
1950 | /* A coding system of this category is always ASCII compatible. */ |
1951 | src += coding->head_ascii; | |
1952 | ||
1953 | while (1) | |
1954 | { | |
065e3595 | 1955 | src_base = src; |
df7492f9 | 1956 | ONE_MORE_BYTE (c); |
065e3595 KH |
1957 | if (c < 0) |
1958 | continue; | |
df7492f9 KH |
1959 | if (c == 0x80) |
1960 | { | |
1961 | /* Perhaps the start of composite character. We simple skip | |
1962 | it because analyzing it is too heavy for detecting. But, | |
1963 | at least, we check that the composite character | |
1964 | constitues of more than 4 bytes. */ | |
8f924df7 | 1965 | const unsigned char *src_base; |
df7492f9 KH |
1966 | |
1967 | repeat: | |
1968 | src_base = src; | |
1969 | do | |
1970 | { | |
1971 | ONE_MORE_BYTE (c); | |
1972 | } | |
1973 | while (c >= 0xA0); | |
1974 | ||
1975 | if (src - src_base <= 4) | |
1976 | break; | |
ff0dacd7 | 1977 | found = CATEGORY_MASK_EMACS_MULE; |
df7492f9 KH |
1978 | if (c == 0x80) |
1979 | goto repeat; | |
b73bfc1c | 1980 | } |
df7492f9 KH |
1981 | |
1982 | if (c < 0x80) | |
b73bfc1c | 1983 | { |
df7492f9 KH |
1984 | if (c < 0x20 |
1985 | && (c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO)) | |
1986 | break; | |
1987 | } | |
1988 | else | |
1989 | { | |
0e219d54 | 1990 | int more_bytes = emacs_mule_bytes[*src_base] - 1; |
df7492f9 | 1991 | |
0e219d54 | 1992 | while (more_bytes > 0) |
df7492f9 KH |
1993 | { |
1994 | ONE_MORE_BYTE (c); | |
0e219d54 KH |
1995 | if (c < 0xA0) |
1996 | { | |
1997 | src--; /* Unread the last byte. */ | |
1998 | break; | |
1999 | } | |
2000 | more_bytes--; | |
df7492f9 | 2001 | } |
0e219d54 | 2002 | if (more_bytes != 0) |
df7492f9 | 2003 | break; |
ff0dacd7 | 2004 | found = CATEGORY_MASK_EMACS_MULE; |
4ed46869 KH |
2005 | } |
2006 | } | |
ff0dacd7 | 2007 | detect_info->rejected |= CATEGORY_MASK_EMACS_MULE; |
df7492f9 KH |
2008 | return 0; |
2009 | ||
2010 | no_more_source: | |
065e3595 | 2011 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
89528eb3 | 2012 | { |
ff0dacd7 | 2013 | detect_info->rejected |= CATEGORY_MASK_EMACS_MULE; |
89528eb3 KH |
2014 | return 0; |
2015 | } | |
ff0dacd7 KH |
2016 | detect_info->found |= found; |
2017 | return 1; | |
4ed46869 KH |
2018 | } |
2019 | ||
b73bfc1c | 2020 | |
df7492f9 KH |
2021 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". */ |
2022 | ||
2023 | /* Decode a character represented as a component of composition | |
2024 | sequence of Emacs 20/21 style at SRC. Set C to that character and | |
2025 | update SRC to the head of next character (or an encoded composition | |
2026 | rule). If SRC doesn't points a composition component, set C to -1. | |
2027 | If SRC points an invalid byte sequence, global exit by a return | |
2028 | value 0. */ | |
2029 | ||
2030 | #define DECODE_EMACS_MULE_COMPOSITION_CHAR(buf) \ | |
f937a7db | 2031 | do \ |
df7492f9 KH |
2032 | { \ |
2033 | int c; \ | |
2034 | int nbytes, nchars; \ | |
2035 | \ | |
2036 | if (src == src_end) \ | |
2037 | break; \ | |
ff0dacd7 | 2038 | c = emacs_mule_char (coding, src, &nbytes, &nchars, NULL);\ |
df7492f9 KH |
2039 | if (c < 0) \ |
2040 | { \ | |
2041 | if (c == -2) \ | |
2042 | break; \ | |
2043 | goto invalid_code; \ | |
2044 | } \ | |
2045 | *buf++ = c; \ | |
2046 | src += nbytes; \ | |
2047 | consumed_chars += nchars; \ | |
2048 | } \ | |
f937a7db | 2049 | while (0) |
df7492f9 KH |
2050 | |
2051 | ||
2052 | /* Decode a composition rule represented as a component of composition | |
781d7a48 KH |
2053 | sequence of Emacs 20 style at SRC. Store the decoded rule in *BUF, |
2054 | and increment BUF. If SRC points an invalid byte sequence, set C | |
2055 | to -1. */ | |
df7492f9 | 2056 | |
781d7a48 | 2057 | #define DECODE_EMACS_MULE_COMPOSITION_RULE_20(buf) \ |
df7492f9 KH |
2058 | do { \ |
2059 | int c, gref, nref; \ | |
2060 | \ | |
781d7a48 | 2061 | if (src >= src_end) \ |
df7492f9 KH |
2062 | goto invalid_code; \ |
2063 | ONE_MORE_BYTE_NO_CHECK (c); \ | |
4d41e8b7 | 2064 | c -= 0xA0; \ |
df7492f9 KH |
2065 | if (c < 0 || c >= 81) \ |
2066 | goto invalid_code; \ | |
2067 | \ | |
2068 | gref = c / 9, nref = c % 9; \ | |
2069 | *buf++ = COMPOSITION_ENCODE_RULE (gref, nref); \ | |
2070 | } while (0) | |
2071 | ||
2072 | ||
781d7a48 KH |
2073 | /* Decode a composition rule represented as a component of composition |
2074 | sequence of Emacs 21 style at SRC. Store the decoded rule in *BUF, | |
2075 | and increment BUF. If SRC points an invalid byte sequence, set C | |
2076 | to -1. */ | |
2077 | ||
2078 | #define DECODE_EMACS_MULE_COMPOSITION_RULE_21(buf) \ | |
2079 | do { \ | |
2080 | int gref, nref; \ | |
2081 | \ | |
2082 | if (src + 1>= src_end) \ | |
2083 | goto invalid_code; \ | |
2084 | ONE_MORE_BYTE_NO_CHECK (gref); \ | |
2085 | gref -= 0x20; \ | |
2086 | ONE_MORE_BYTE_NO_CHECK (nref); \ | |
2087 | nref -= 0x20; \ | |
2088 | if (gref < 0 || gref >= 81 \ | |
2089 | || nref < 0 || nref >= 81) \ | |
2090 | goto invalid_code; \ | |
2091 | *buf++ = COMPOSITION_ENCODE_RULE (gref, nref); \ | |
2092 | } while (0) | |
2093 | ||
2094 | ||
df7492f9 | 2095 | #define DECODE_EMACS_MULE_21_COMPOSITION(c) \ |
aa72b389 | 2096 | do { \ |
df7492f9 | 2097 | /* Emacs 21 style format. The first three bytes at SRC are \ |
781d7a48 | 2098 | (METHOD - 0xF2), (BYTES - 0xA0), (CHARS - 0xA0), where BYTES is \ |
df7492f9 KH |
2099 | the byte length of this composition information, CHARS is the \ |
2100 | number of characters composed by this composition. */ \ | |
781d7a48 KH |
2101 | enum composition_method method = c - 0xF2; \ |
2102 | int *charbuf_base = charbuf; \ | |
df7492f9 KH |
2103 | int consumed_chars_limit; \ |
2104 | int nbytes, nchars; \ | |
2105 | \ | |
2106 | ONE_MORE_BYTE (c); \ | |
065e3595 KH |
2107 | if (c < 0) \ |
2108 | goto invalid_code; \ | |
df7492f9 KH |
2109 | nbytes = c - 0xA0; \ |
2110 | if (nbytes < 3) \ | |
2111 | goto invalid_code; \ | |
2112 | ONE_MORE_BYTE (c); \ | |
065e3595 KH |
2113 | if (c < 0) \ |
2114 | goto invalid_code; \ | |
df7492f9 | 2115 | nchars = c - 0xA0; \ |
69a80ea3 | 2116 | ADD_COMPOSITION_DATA (charbuf, nchars, method); \ |
df7492f9 KH |
2117 | consumed_chars_limit = consumed_chars_base + nbytes; \ |
2118 | if (method != COMPOSITION_RELATIVE) \ | |
aa72b389 | 2119 | { \ |
df7492f9 KH |
2120 | int i = 0; \ |
2121 | while (consumed_chars < consumed_chars_limit) \ | |
aa72b389 | 2122 | { \ |
df7492f9 | 2123 | if (i % 2 && method != COMPOSITION_WITH_ALTCHARS) \ |
781d7a48 | 2124 | DECODE_EMACS_MULE_COMPOSITION_RULE_21 (charbuf); \ |
df7492f9 KH |
2125 | else \ |
2126 | DECODE_EMACS_MULE_COMPOSITION_CHAR (charbuf); \ | |
781d7a48 | 2127 | i++; \ |
aa72b389 | 2128 | } \ |
df7492f9 KH |
2129 | if (consumed_chars < consumed_chars_limit) \ |
2130 | goto invalid_code; \ | |
781d7a48 | 2131 | charbuf_base[0] -= i; \ |
aa72b389 KH |
2132 | } \ |
2133 | } while (0) | |
93dec019 | 2134 | |
aa72b389 | 2135 | |
d959f512 KH |
2136 | #define DECODE_EMACS_MULE_20_RELATIVE_COMPOSITION(c) \ |
2137 | do { \ | |
2138 | /* Emacs 20 style format for relative composition. */ \ | |
2139 | /* Store multibyte form of characters to be composed. */ \ | |
2140 | enum composition_method method = COMPOSITION_RELATIVE; \ | |
2141 | int components[MAX_COMPOSITION_COMPONENTS * 2 - 1]; \ | |
2142 | int *buf = components; \ | |
2143 | int i, j; \ | |
2144 | \ | |
2145 | src = src_base; \ | |
2146 | ONE_MORE_BYTE (c); /* skip 0x80 */ \ | |
2147 | for (i = 0; *src >= 0xA0 && i < MAX_COMPOSITION_COMPONENTS; i++) \ | |
2148 | DECODE_EMACS_MULE_COMPOSITION_CHAR (buf); \ | |
2149 | if (i < 2) \ | |
2150 | goto invalid_code; \ | |
2151 | ADD_COMPOSITION_DATA (charbuf, i, method); \ | |
2152 | for (j = 0; j < i; j++) \ | |
2153 | *charbuf++ = components[j]; \ | |
df7492f9 KH |
2154 | } while (0) |
2155 | ||
2156 | ||
2157 | #define DECODE_EMACS_MULE_20_RULEBASE_COMPOSITION(c) \ | |
2158 | do { \ | |
2159 | /* Emacs 20 style format for rule-base composition. */ \ | |
2160 | /* Store multibyte form of characters to be composed. */ \ | |
ff0dacd7 | 2161 | enum composition_method method = COMPOSITION_WITH_RULE; \ |
4d41e8b7 | 2162 | int *charbuf_base = charbuf; \ |
df7492f9 KH |
2163 | int components[MAX_COMPOSITION_COMPONENTS * 2 - 1]; \ |
2164 | int *buf = components; \ | |
2165 | int i, j; \ | |
4d41e8b7 | 2166 | \ |
df7492f9 | 2167 | DECODE_EMACS_MULE_COMPOSITION_CHAR (buf); \ |
4d41e8b7 | 2168 | for (i = 1; i < MAX_COMPOSITION_COMPONENTS; i++) \ |
df7492f9 | 2169 | { \ |
4d41e8b7 KH |
2170 | if (*src < 0xA0) \ |
2171 | break; \ | |
781d7a48 | 2172 | DECODE_EMACS_MULE_COMPOSITION_RULE_20 (buf); \ |
df7492f9 KH |
2173 | DECODE_EMACS_MULE_COMPOSITION_CHAR (buf); \ |
2174 | } \ | |
4d41e8b7 | 2175 | if (i <= 1 || (buf - components) % 2 == 0) \ |
df7492f9 | 2176 | goto invalid_code; \ |
4d41e8b7 | 2177 | if (charbuf + i + (i / 2) + 1 >= charbuf_end) \ |
df7492f9 | 2178 | goto no_more_source; \ |
4d41e8b7 KH |
2179 | ADD_COMPOSITION_DATA (charbuf, i, method); \ |
2180 | i = i * 2 - 1; \ | |
df7492f9 KH |
2181 | for (j = 0; j < i; j++) \ |
2182 | *charbuf++ = components[j]; \ | |
4d41e8b7 | 2183 | charbuf_base[0] -= i; \ |
df7492f9 KH |
2184 | for (j = 0; j < i; j += 2) \ |
2185 | *charbuf++ = components[j]; \ | |
2186 | } while (0) | |
2187 | ||
aa72b389 KH |
2188 | |
2189 | static void | |
df7492f9 | 2190 | decode_coding_emacs_mule (coding) |
aa72b389 | 2191 | struct coding_system *coding; |
aa72b389 | 2192 | { |
8f924df7 KH |
2193 | const unsigned char *src = coding->source + coding->consumed; |
2194 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
2195 | const unsigned char *src_base; | |
69a80ea3 KH |
2196 | int *charbuf = coding->charbuf + coding->charbuf_used; |
2197 | int *charbuf_end | |
2198 | = coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH; | |
df7492f9 | 2199 | int consumed_chars = 0, consumed_chars_base; |
df7492f9 | 2200 | int multibytep = coding->src_multibyte; |
24a73b0a | 2201 | Lisp_Object attrs, charset_list; |
ff0dacd7 KH |
2202 | int char_offset = coding->produced_char; |
2203 | int last_offset = char_offset; | |
2204 | int last_id = charset_ascii; | |
119852e7 KH |
2205 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
2206 | int byte_after_cr = -1; | |
aa72b389 | 2207 | |
24a73b0a | 2208 | CODING_GET_INFO (coding, attrs, charset_list); |
aa72b389 | 2209 | |
aa72b389 KH |
2210 | while (1) |
2211 | { | |
df7492f9 KH |
2212 | int c; |
2213 | ||
aa72b389 | 2214 | src_base = src; |
df7492f9 KH |
2215 | consumed_chars_base = consumed_chars; |
2216 | ||
2217 | if (charbuf >= charbuf_end) | |
2218 | break; | |
aa72b389 | 2219 | |
119852e7 KH |
2220 | if (byte_after_cr >= 0) |
2221 | c = byte_after_cr, byte_after_cr = -1; | |
2222 | else | |
2223 | ONE_MORE_BYTE (c); | |
065e3595 KH |
2224 | if (c < 0) |
2225 | { | |
2226 | *charbuf++ = -c; | |
2227 | char_offset++; | |
2228 | } | |
2229 | else if (c < 0x80) | |
aa72b389 | 2230 | { |
119852e7 KH |
2231 | if (eol_crlf && c == '\r') |
2232 | ONE_MORE_BYTE (byte_after_cr); | |
df7492f9 KH |
2233 | *charbuf++ = c; |
2234 | char_offset++; | |
aa72b389 | 2235 | } |
df7492f9 KH |
2236 | else if (c == 0x80) |
2237 | { | |
df7492f9 | 2238 | ONE_MORE_BYTE (c); |
065e3595 KH |
2239 | if (c < 0) |
2240 | goto invalid_code; | |
781d7a48 KH |
2241 | if (c - 0xF2 >= COMPOSITION_RELATIVE |
2242 | && c - 0xF2 <= COMPOSITION_WITH_RULE_ALTCHARS) | |
df7492f9 KH |
2243 | DECODE_EMACS_MULE_21_COMPOSITION (c); |
2244 | else if (c < 0xC0) | |
2245 | DECODE_EMACS_MULE_20_RELATIVE_COMPOSITION (c); | |
2246 | else if (c == 0xFF) | |
2247 | DECODE_EMACS_MULE_20_RULEBASE_COMPOSITION (c); | |
2248 | else | |
2249 | goto invalid_code; | |
2250 | } | |
2251 | else if (c < 0xA0 && emacs_mule_bytes[c] > 1) | |
2252 | { | |
2253 | int nbytes, nchars; | |
ff0dacd7 KH |
2254 | int id; |
2255 | ||
781d7a48 KH |
2256 | src = src_base; |
2257 | consumed_chars = consumed_chars_base; | |
ff0dacd7 | 2258 | c = emacs_mule_char (coding, src, &nbytes, &nchars, &id); |
df7492f9 KH |
2259 | if (c < 0) |
2260 | { | |
2261 | if (c == -2) | |
2262 | break; | |
2263 | goto invalid_code; | |
2264 | } | |
ff0dacd7 KH |
2265 | if (last_id != id) |
2266 | { | |
2267 | if (last_id != charset_ascii) | |
69a80ea3 | 2268 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
ff0dacd7 KH |
2269 | last_id = id; |
2270 | last_offset = char_offset; | |
2271 | } | |
df7492f9 | 2272 | *charbuf++ = c; |
781d7a48 KH |
2273 | src += nbytes; |
2274 | consumed_chars += nchars; | |
df7492f9 KH |
2275 | char_offset++; |
2276 | } | |
4d41e8b7 KH |
2277 | else |
2278 | goto invalid_code; | |
df7492f9 KH |
2279 | continue; |
2280 | ||
2281 | invalid_code: | |
2282 | src = src_base; | |
2283 | consumed_chars = consumed_chars_base; | |
2284 | ONE_MORE_BYTE (c); | |
2285 | *charbuf++ = ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); | |
ff0dacd7 | 2286 | char_offset++; |
df7492f9 KH |
2287 | coding->errors++; |
2288 | } | |
2289 | ||
2290 | no_more_source: | |
ff0dacd7 | 2291 | if (last_id != charset_ascii) |
69a80ea3 | 2292 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
2293 | coding->consumed_char += consumed_chars_base; |
2294 | coding->consumed = src_base - coding->source; | |
2295 | coding->charbuf_used = charbuf - coding->charbuf; | |
2296 | } | |
2297 | ||
2298 | ||
2299 | #define EMACS_MULE_LEADING_CODES(id, codes) \ | |
2300 | do { \ | |
2301 | if (id < 0xA0) \ | |
2302 | codes[0] = id, codes[1] = 0; \ | |
2303 | else if (id < 0xE0) \ | |
2304 | codes[0] = 0x9A, codes[1] = id; \ | |
2305 | else if (id < 0xF0) \ | |
2306 | codes[0] = 0x9B, codes[1] = id; \ | |
2307 | else if (id < 0xF5) \ | |
2308 | codes[0] = 0x9C, codes[1] = id; \ | |
2309 | else \ | |
2310 | codes[0] = 0x9D, codes[1] = id; \ | |
2311 | } while (0); | |
2312 | ||
aa72b389 | 2313 | |
df7492f9 KH |
2314 | static int |
2315 | encode_coding_emacs_mule (coding) | |
2316 | struct coding_system *coding; | |
2317 | { | |
2318 | int multibytep = coding->dst_multibyte; | |
2319 | int *charbuf = coding->charbuf; | |
2320 | int *charbuf_end = charbuf + coding->charbuf_used; | |
2321 | unsigned char *dst = coding->destination + coding->produced; | |
2322 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
2323 | int safe_room = 8; | |
df7492f9 | 2324 | int produced_chars = 0; |
24a73b0a | 2325 | Lisp_Object attrs, charset_list; |
df7492f9 | 2326 | int c; |
ff0dacd7 | 2327 | int preferred_charset_id = -1; |
df7492f9 | 2328 | |
24a73b0a | 2329 | CODING_GET_INFO (coding, attrs, charset_list); |
eccb6815 KH |
2330 | if (! EQ (charset_list, Vemacs_mule_charset_list)) |
2331 | { | |
2332 | CODING_ATTR_CHARSET_LIST (attrs) | |
2333 | = charset_list = Vemacs_mule_charset_list; | |
2334 | } | |
df7492f9 KH |
2335 | |
2336 | while (charbuf < charbuf_end) | |
2337 | { | |
2338 | ASSURE_DESTINATION (safe_room); | |
2339 | c = *charbuf++; | |
ff0dacd7 KH |
2340 | |
2341 | if (c < 0) | |
2342 | { | |
2343 | /* Handle an annotation. */ | |
2344 | switch (*charbuf) | |
2345 | { | |
2346 | case CODING_ANNOTATE_COMPOSITION_MASK: | |
2347 | /* Not yet implemented. */ | |
2348 | break; | |
2349 | case CODING_ANNOTATE_CHARSET_MASK: | |
2350 | preferred_charset_id = charbuf[3]; | |
2351 | if (preferred_charset_id >= 0 | |
2352 | && NILP (Fmemq (make_number (preferred_charset_id), | |
2353 | charset_list))) | |
2354 | preferred_charset_id = -1; | |
2355 | break; | |
2356 | default: | |
2357 | abort (); | |
2358 | } | |
2359 | charbuf += -c - 1; | |
2360 | continue; | |
2361 | } | |
2362 | ||
df7492f9 KH |
2363 | if (ASCII_CHAR_P (c)) |
2364 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d KH |
2365 | else if (CHAR_BYTE8_P (c)) |
2366 | { | |
2367 | c = CHAR_TO_BYTE8 (c); | |
2368 | EMIT_ONE_BYTE (c); | |
2369 | } | |
df7492f9 | 2370 | else |
aa72b389 | 2371 | { |
df7492f9 KH |
2372 | struct charset *charset; |
2373 | unsigned code; | |
2374 | int dimension; | |
2375 | int emacs_mule_id; | |
2376 | unsigned char leading_codes[2]; | |
2377 | ||
ff0dacd7 KH |
2378 | if (preferred_charset_id >= 0) |
2379 | { | |
2380 | charset = CHARSET_FROM_ID (preferred_charset_id); | |
2381 | if (! CHAR_CHARSET_P (c, charset)) | |
2382 | charset = char_charset (c, charset_list, NULL); | |
2383 | } | |
2384 | else | |
2385 | charset = char_charset (c, charset_list, &code); | |
df7492f9 KH |
2386 | if (! charset) |
2387 | { | |
2388 | c = coding->default_char; | |
2389 | if (ASCII_CHAR_P (c)) | |
2390 | { | |
2391 | EMIT_ONE_ASCII_BYTE (c); | |
2392 | continue; | |
2393 | } | |
2394 | charset = char_charset (c, charset_list, &code); | |
2395 | } | |
2396 | dimension = CHARSET_DIMENSION (charset); | |
2397 | emacs_mule_id = CHARSET_EMACS_MULE_ID (charset); | |
2398 | EMACS_MULE_LEADING_CODES (emacs_mule_id, leading_codes); | |
2399 | EMIT_ONE_BYTE (leading_codes[0]); | |
2400 | if (leading_codes[1]) | |
2401 | EMIT_ONE_BYTE (leading_codes[1]); | |
2402 | if (dimension == 1) | |
1fa663f9 | 2403 | EMIT_ONE_BYTE (code | 0x80); |
aa72b389 | 2404 | else |
df7492f9 | 2405 | { |
1fa663f9 | 2406 | code |= 0x8080; |
df7492f9 KH |
2407 | EMIT_ONE_BYTE (code >> 8); |
2408 | EMIT_ONE_BYTE (code & 0xFF); | |
2409 | } | |
aa72b389 | 2410 | } |
aa72b389 | 2411 | } |
065e3595 | 2412 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
2413 | coding->produced_char += produced_chars; |
2414 | coding->produced = dst - coding->destination; | |
2415 | return 0; | |
aa72b389 | 2416 | } |
b73bfc1c | 2417 | |
4ed46869 | 2418 | \f |
df7492f9 | 2419 | /*** 7. ISO2022 handlers ***/ |
4ed46869 KH |
2420 | |
2421 | /* The following note describes the coding system ISO2022 briefly. | |
39787efd | 2422 | Since the intention of this note is to help understand the |
5a936b46 | 2423 | functions in this file, some parts are NOT ACCURATE or are OVERLY |
39787efd | 2424 | SIMPLIFIED. For thorough understanding, please refer to the |
5a936b46 | 2425 | original document of ISO2022. This is equivalent to the standard |
cfb43547 | 2426 | ECMA-35, obtainable from <URL:http://www.ecma.ch/> (*). |
4ed46869 KH |
2427 | |
2428 | ISO2022 provides many mechanisms to encode several character sets | |
cfb43547 | 2429 | in 7-bit and 8-bit environments. For 7-bit environments, all text |
39787efd KH |
2430 | is encoded using bytes less than 128. This may make the encoded |
2431 | text a little bit longer, but the text passes more easily through | |
cfb43547 | 2432 | several types of gateway, some of which strip off the MSB (Most |
8ca3766a | 2433 | Significant Bit). |
b73bfc1c | 2434 | |
cfb43547 DL |
2435 | There are two kinds of character sets: control character sets and |
2436 | graphic character sets. The former contain control characters such | |
4ed46869 | 2437 | as `newline' and `escape' to provide control functions (control |
39787efd | 2438 | functions are also provided by escape sequences). The latter |
cfb43547 | 2439 | contain graphic characters such as 'A' and '-'. Emacs recognizes |
4ed46869 KH |
2440 | two control character sets and many graphic character sets. |
2441 | ||
2442 | Graphic character sets are classified into one of the following | |
39787efd KH |
2443 | four classes, according to the number of bytes (DIMENSION) and |
2444 | number of characters in one dimension (CHARS) of the set: | |
2445 | - DIMENSION1_CHARS94 | |
2446 | - DIMENSION1_CHARS96 | |
2447 | - DIMENSION2_CHARS94 | |
2448 | - DIMENSION2_CHARS96 | |
2449 | ||
2450 | In addition, each character set is assigned an identification tag, | |
cfb43547 | 2451 | unique for each set, called the "final character" (denoted as <F> |
39787efd KH |
2452 | hereafter). The <F> of each character set is decided by ECMA(*) |
2453 | when it is registered in ISO. The code range of <F> is 0x30..0x7F | |
2454 | (0x30..0x3F are for private use only). | |
4ed46869 KH |
2455 | |
2456 | Note (*): ECMA = European Computer Manufacturers Association | |
2457 | ||
cfb43547 | 2458 | Here are examples of graphic character sets [NAME(<F>)]: |
4ed46869 KH |
2459 | o DIMENSION1_CHARS94 -- ASCII('B'), right-half-of-JISX0201('I'), ... |
2460 | o DIMENSION1_CHARS96 -- right-half-of-ISO8859-1('A'), ... | |
2461 | o DIMENSION2_CHARS94 -- GB2312('A'), JISX0208('B'), ... | |
2462 | o DIMENSION2_CHARS96 -- none for the moment | |
2463 | ||
39787efd | 2464 | A code area (1 byte=8 bits) is divided into 4 areas, C0, GL, C1, and GR. |
4ed46869 KH |
2465 | C0 [0x00..0x1F] -- control character plane 0 |
2466 | GL [0x20..0x7F] -- graphic character plane 0 | |
2467 | C1 [0x80..0x9F] -- control character plane 1 | |
2468 | GR [0xA0..0xFF] -- graphic character plane 1 | |
2469 | ||
2470 | A control character set is directly designated and invoked to C0 or | |
39787efd KH |
2471 | C1 by an escape sequence. The most common case is that: |
2472 | - ISO646's control character set is designated/invoked to C0, and | |
2473 | - ISO6429's control character set is designated/invoked to C1, | |
2474 | and usually these designations/invocations are omitted in encoded | |
2475 | text. In a 7-bit environment, only C0 can be used, and a control | |
2476 | character for C1 is encoded by an appropriate escape sequence to | |
2477 | fit into the environment. All control characters for C1 are | |
2478 | defined to have corresponding escape sequences. | |
4ed46869 KH |
2479 | |
2480 | A graphic character set is at first designated to one of four | |
2481 | graphic registers (G0 through G3), then these graphic registers are | |
2482 | invoked to GL or GR. These designations and invocations can be | |
2483 | done independently. The most common case is that G0 is invoked to | |
39787efd KH |
2484 | GL, G1 is invoked to GR, and ASCII is designated to G0. Usually |
2485 | these invocations and designations are omitted in encoded text. | |
2486 | In a 7-bit environment, only GL can be used. | |
4ed46869 | 2487 | |
39787efd KH |
2488 | When a graphic character set of CHARS94 is invoked to GL, codes |
2489 | 0x20 and 0x7F of the GL area work as control characters SPACE and | |
2490 | DEL respectively, and codes 0xA0 and 0xFF of the GR area should not | |
2491 | be used. | |
4ed46869 KH |
2492 | |
2493 | There are two ways of invocation: locking-shift and single-shift. | |
2494 | With locking-shift, the invocation lasts until the next different | |
39787efd KH |
2495 | invocation, whereas with single-shift, the invocation affects the |
2496 | following character only and doesn't affect the locking-shift | |
2497 | state. Invocations are done by the following control characters or | |
2498 | escape sequences: | |
4ed46869 KH |
2499 | |
2500 | ---------------------------------------------------------------------- | |
39787efd | 2501 | abbrev function cntrl escape seq description |
4ed46869 | 2502 | ---------------------------------------------------------------------- |
39787efd KH |
2503 | SI/LS0 (shift-in) 0x0F none invoke G0 into GL |
2504 | SO/LS1 (shift-out) 0x0E none invoke G1 into GL | |
2505 | LS2 (locking-shift-2) none ESC 'n' invoke G2 into GL | |
2506 | LS3 (locking-shift-3) none ESC 'o' invoke G3 into GL | |
2507 | LS1R (locking-shift-1 right) none ESC '~' invoke G1 into GR (*) | |
2508 | LS2R (locking-shift-2 right) none ESC '}' invoke G2 into GR (*) | |
2509 | LS3R (locking-shift 3 right) none ESC '|' invoke G3 into GR (*) | |
2510 | SS2 (single-shift-2) 0x8E ESC 'N' invoke G2 for one char | |
2511 | SS3 (single-shift-3) 0x8F ESC 'O' invoke G3 for one char | |
4ed46869 | 2512 | ---------------------------------------------------------------------- |
39787efd KH |
2513 | (*) These are not used by any known coding system. |
2514 | ||
2515 | Control characters for these functions are defined by macros | |
2516 | ISO_CODE_XXX in `coding.h'. | |
4ed46869 | 2517 | |
39787efd | 2518 | Designations are done by the following escape sequences: |
4ed46869 KH |
2519 | ---------------------------------------------------------------------- |
2520 | escape sequence description | |
2521 | ---------------------------------------------------------------------- | |
2522 | ESC '(' <F> designate DIMENSION1_CHARS94<F> to G0 | |
2523 | ESC ')' <F> designate DIMENSION1_CHARS94<F> to G1 | |
2524 | ESC '*' <F> designate DIMENSION1_CHARS94<F> to G2 | |
2525 | ESC '+' <F> designate DIMENSION1_CHARS94<F> to G3 | |
2526 | ESC ',' <F> designate DIMENSION1_CHARS96<F> to G0 (*) | |
2527 | ESC '-' <F> designate DIMENSION1_CHARS96<F> to G1 | |
2528 | ESC '.' <F> designate DIMENSION1_CHARS96<F> to G2 | |
2529 | ESC '/' <F> designate DIMENSION1_CHARS96<F> to G3 | |
2530 | ESC '$' '(' <F> designate DIMENSION2_CHARS94<F> to G0 (**) | |
2531 | ESC '$' ')' <F> designate DIMENSION2_CHARS94<F> to G1 | |
2532 | ESC '$' '*' <F> designate DIMENSION2_CHARS94<F> to G2 | |
2533 | ESC '$' '+' <F> designate DIMENSION2_CHARS94<F> to G3 | |
2534 | ESC '$' ',' <F> designate DIMENSION2_CHARS96<F> to G0 (*) | |
2535 | ESC '$' '-' <F> designate DIMENSION2_CHARS96<F> to G1 | |
2536 | ESC '$' '.' <F> designate DIMENSION2_CHARS96<F> to G2 | |
2537 | ESC '$' '/' <F> designate DIMENSION2_CHARS96<F> to G3 | |
2538 | ---------------------------------------------------------------------- | |
2539 | ||
2540 | In this list, "DIMENSION1_CHARS94<F>" means a graphic character set | |
39787efd | 2541 | of dimension 1, chars 94, and final character <F>, etc... |
4ed46869 KH |
2542 | |
2543 | Note (*): Although these designations are not allowed in ISO2022, | |
2544 | Emacs accepts them on decoding, and produces them on encoding | |
39787efd | 2545 | CHARS96 character sets in a coding system which is characterized as |
4ed46869 KH |
2546 | 7-bit environment, non-locking-shift, and non-single-shift. |
2547 | ||
2548 | Note (**): If <F> is '@', 'A', or 'B', the intermediate character | |
df7492f9 | 2549 | '(' must be omitted. We refer to this as "short-form" hereafter. |
4ed46869 | 2550 | |
cfb43547 | 2551 | Now you may notice that there are a lot of ways of encoding the |
39787efd KH |
2552 | same multilingual text in ISO2022. Actually, there exist many |
2553 | coding systems such as Compound Text (used in X11's inter client | |
8ca3766a DL |
2554 | communication, ISO-2022-JP (used in Japanese Internet), ISO-2022-KR |
2555 | (used in Korean Internet), EUC (Extended UNIX Code, used in Asian | |
4ed46869 KH |
2556 | localized platforms), and all of these are variants of ISO2022. |
2557 | ||
2558 | In addition to the above, Emacs handles two more kinds of escape | |
2559 | sequences: ISO6429's direction specification and Emacs' private | |
2560 | sequence for specifying character composition. | |
2561 | ||
39787efd | 2562 | ISO6429's direction specification takes the following form: |
4ed46869 KH |
2563 | o CSI ']' -- end of the current direction |
2564 | o CSI '0' ']' -- end of the current direction | |
2565 | o CSI '1' ']' -- start of left-to-right text | |
2566 | o CSI '2' ']' -- start of right-to-left text | |
2567 | The control character CSI (0x9B: control sequence introducer) is | |
39787efd KH |
2568 | abbreviated to the escape sequence ESC '[' in a 7-bit environment. |
2569 | ||
2570 | Character composition specification takes the following form: | |
ec6d2bb8 KH |
2571 | o ESC '0' -- start relative composition |
2572 | o ESC '1' -- end composition | |
2573 | o ESC '2' -- start rule-base composition (*) | |
2574 | o ESC '3' -- start relative composition with alternate chars (**) | |
2575 | o ESC '4' -- start rule-base composition with alternate chars (**) | |
b73bfc1c | 2576 | Since these are not standard escape sequences of any ISO standard, |
cfb43547 | 2577 | the use of them with these meanings is restricted to Emacs only. |
ec6d2bb8 | 2578 | |
5a936b46 DL |
2579 | (*) This form is used only in Emacs 20.7 and older versions, |
2580 | but newer versions can safely decode it. | |
cfb43547 | 2581 | (**) This form is used only in Emacs 21.1 and newer versions, |
5a936b46 | 2582 | and older versions can't decode it. |
ec6d2bb8 | 2583 | |
cfb43547 | 2584 | Here's a list of example usages of these composition escape |
b73bfc1c | 2585 | sequences (categorized by `enum composition_method'). |
ec6d2bb8 | 2586 | |
b73bfc1c | 2587 | COMPOSITION_RELATIVE: |
ec6d2bb8 | 2588 | ESC 0 CHAR [ CHAR ] ESC 1 |
8ca3766a | 2589 | COMPOSITION_WITH_RULE: |
ec6d2bb8 | 2590 | ESC 2 CHAR [ RULE CHAR ] ESC 1 |
b73bfc1c | 2591 | COMPOSITION_WITH_ALTCHARS: |
ec6d2bb8 | 2592 | ESC 3 ALTCHAR [ ALTCHAR ] ESC 0 CHAR [ CHAR ] ESC 1 |
b73bfc1c | 2593 | COMPOSITION_WITH_RULE_ALTCHARS: |
ec6d2bb8 | 2594 | ESC 4 ALTCHAR [ RULE ALTCHAR ] ESC 0 CHAR [ CHAR ] ESC 1 */ |
4ed46869 KH |
2595 | |
2596 | enum iso_code_class_type iso_code_class[256]; | |
2597 | ||
df7492f9 KH |
2598 | #define SAFE_CHARSET_P(coding, id) \ |
2599 | ((id) <= (coding)->max_charset_id \ | |
2600 | && (coding)->safe_charsets[id] >= 0) | |
2601 | ||
2602 | ||
2603 | #define SHIFT_OUT_OK(category) \ | |
2604 | (CODING_ISO_INITIAL (&coding_categories[category], 1) >= 0) | |
2605 | ||
2606 | static void | |
f0064e1f DL |
2607 | setup_iso_safe_charsets (attrs) |
2608 | Lisp_Object attrs; | |
df7492f9 KH |
2609 | { |
2610 | Lisp_Object charset_list, safe_charsets; | |
2611 | Lisp_Object request; | |
2612 | Lisp_Object reg_usage; | |
2613 | Lisp_Object tail; | |
2614 | int reg94, reg96; | |
2615 | int flags = XINT (AREF (attrs, coding_attr_iso_flags)); | |
2616 | int max_charset_id; | |
2617 | ||
2618 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
2619 | if ((flags & CODING_ISO_FLAG_FULL_SUPPORT) | |
2620 | && ! EQ (charset_list, Viso_2022_charset_list)) | |
2621 | { | |
2622 | CODING_ATTR_CHARSET_LIST (attrs) | |
2623 | = charset_list = Viso_2022_charset_list; | |
2624 | ASET (attrs, coding_attr_safe_charsets, Qnil); | |
2625 | } | |
2626 | ||
2627 | if (STRINGP (AREF (attrs, coding_attr_safe_charsets))) | |
2628 | return; | |
2629 | ||
2630 | max_charset_id = 0; | |
2631 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
2632 | { | |
2633 | int id = XINT (XCAR (tail)); | |
2634 | if (max_charset_id < id) | |
2635 | max_charset_id = id; | |
2636 | } | |
d46c5b12 | 2637 | |
df7492f9 KH |
2638 | safe_charsets = Fmake_string (make_number (max_charset_id + 1), |
2639 | make_number (255)); | |
2640 | request = AREF (attrs, coding_attr_iso_request); | |
2641 | reg_usage = AREF (attrs, coding_attr_iso_usage); | |
2642 | reg94 = XINT (XCAR (reg_usage)); | |
2643 | reg96 = XINT (XCDR (reg_usage)); | |
2644 | ||
2645 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
2646 | { | |
2647 | Lisp_Object id; | |
2648 | Lisp_Object reg; | |
2649 | struct charset *charset; | |
2650 | ||
2651 | id = XCAR (tail); | |
2652 | charset = CHARSET_FROM_ID (XINT (id)); | |
bf16eb23 | 2653 | reg = Fcdr (Fassq (id, request)); |
df7492f9 | 2654 | if (! NILP (reg)) |
8f924df7 | 2655 | SSET (safe_charsets, XINT (id), XINT (reg)); |
df7492f9 KH |
2656 | else if (charset->iso_chars_96) |
2657 | { | |
2658 | if (reg96 < 4) | |
8f924df7 | 2659 | SSET (safe_charsets, XINT (id), reg96); |
df7492f9 KH |
2660 | } |
2661 | else | |
2662 | { | |
2663 | if (reg94 < 4) | |
8f924df7 | 2664 | SSET (safe_charsets, XINT (id), reg94); |
df7492f9 KH |
2665 | } |
2666 | } | |
2667 | ASET (attrs, coding_attr_safe_charsets, safe_charsets); | |
2668 | } | |
d46c5b12 | 2669 | |
b6871cc7 | 2670 | |
4ed46869 | 2671 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". |
ff0dacd7 KH |
2672 | Check if a text is encoded in one of ISO-2022 based codig systems. |
2673 | If it is, return 1, else return 0. */ | |
4ed46869 | 2674 | |
0a28aafb | 2675 | static int |
ff0dacd7 | 2676 | detect_coding_iso_2022 (coding, detect_info) |
df7492f9 | 2677 | struct coding_system *coding; |
ff0dacd7 | 2678 | struct coding_detection_info *detect_info; |
4ed46869 | 2679 | { |
8f924df7 KH |
2680 | const unsigned char *src = coding->source, *src_base = src; |
2681 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
df7492f9 | 2682 | int multibytep = coding->src_multibyte; |
ff0dacd7 | 2683 | int single_shifting = 0; |
df7492f9 KH |
2684 | int id; |
2685 | int c, c1; | |
2686 | int consumed_chars = 0; | |
2687 | int i; | |
ff0dacd7 KH |
2688 | int rejected = 0; |
2689 | int found = 0; | |
2690 | ||
2691 | detect_info->checked |= CATEGORY_MASK_ISO; | |
df7492f9 KH |
2692 | |
2693 | for (i = coding_category_iso_7; i <= coding_category_iso_8_else; i++) | |
2694 | { | |
2695 | struct coding_system *this = &(coding_categories[i]); | |
2696 | Lisp_Object attrs, val; | |
2697 | ||
2698 | attrs = CODING_ID_ATTRS (this->id); | |
2699 | if (CODING_ISO_FLAGS (this) & CODING_ISO_FLAG_FULL_SUPPORT | |
2700 | && ! EQ (CODING_ATTR_SAFE_CHARSETS (attrs), Viso_2022_charset_list)) | |
2701 | setup_iso_safe_charsets (attrs); | |
2702 | val = CODING_ATTR_SAFE_CHARSETS (attrs); | |
8f924df7 KH |
2703 | this->max_charset_id = SCHARS (val) - 1; |
2704 | this->safe_charsets = (char *) SDATA (val); | |
df7492f9 KH |
2705 | } |
2706 | ||
2707 | /* A coding system of this category is always ASCII compatible. */ | |
2708 | src += coding->head_ascii; | |
3f003981 | 2709 | |
ff0dacd7 | 2710 | while (rejected != CATEGORY_MASK_ISO) |
4ed46869 | 2711 | { |
065e3595 | 2712 | src_base = src; |
df7492f9 | 2713 | ONE_MORE_BYTE (c); |
4ed46869 KH |
2714 | switch (c) |
2715 | { | |
2716 | case ISO_CODE_ESC: | |
74383408 KH |
2717 | if (inhibit_iso_escape_detection) |
2718 | break; | |
f46869e4 | 2719 | single_shifting = 0; |
df7492f9 | 2720 | ONE_MORE_BYTE (c); |
d46c5b12 | 2721 | if (c >= '(' && c <= '/') |
4ed46869 | 2722 | { |
bf9cdd4e | 2723 | /* Designation sequence for a charset of dimension 1. */ |
df7492f9 | 2724 | ONE_MORE_BYTE (c1); |
d46c5b12 | 2725 | if (c1 < ' ' || c1 >= 0x80 |
df7492f9 | 2726 | || (id = iso_charset_table[0][c >= ','][c1]) < 0) |
d46c5b12 KH |
2727 | /* Invalid designation sequence. Just ignore. */ |
2728 | break; | |
bf9cdd4e KH |
2729 | } |
2730 | else if (c == '$') | |
2731 | { | |
2732 | /* Designation sequence for a charset of dimension 2. */ | |
df7492f9 | 2733 | ONE_MORE_BYTE (c); |
bf9cdd4e KH |
2734 | if (c >= '@' && c <= 'B') |
2735 | /* Designation for JISX0208.1978, GB2312, or JISX0208. */ | |
ff0dacd7 | 2736 | id = iso_charset_table[1][0][c]; |
bf9cdd4e | 2737 | else if (c >= '(' && c <= '/') |
bcf26d6a | 2738 | { |
df7492f9 | 2739 | ONE_MORE_BYTE (c1); |
d46c5b12 | 2740 | if (c1 < ' ' || c1 >= 0x80 |
df7492f9 | 2741 | || (id = iso_charset_table[1][c >= ','][c1]) < 0) |
d46c5b12 KH |
2742 | /* Invalid designation sequence. Just ignore. */ |
2743 | break; | |
bcf26d6a | 2744 | } |
bf9cdd4e | 2745 | else |
ff0dacd7 | 2746 | /* Invalid designation sequence. Just ignore it. */ |
d46c5b12 KH |
2747 | break; |
2748 | } | |
ae9ff118 | 2749 | else if (c == 'N' || c == 'O') |
d46c5b12 | 2750 | { |
ae9ff118 | 2751 | /* ESC <Fe> for SS2 or SS3. */ |
ff0dacd7 KH |
2752 | single_shifting = 1; |
2753 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_8BIT; | |
d46c5b12 | 2754 | break; |
4ed46869 | 2755 | } |
ec6d2bb8 KH |
2756 | else if (c >= '0' && c <= '4') |
2757 | { | |
2758 | /* ESC <Fp> for start/end composition. */ | |
ff0dacd7 | 2759 | found |= CATEGORY_MASK_ISO; |
ec6d2bb8 KH |
2760 | break; |
2761 | } | |
bf9cdd4e | 2762 | else |
df7492f9 | 2763 | { |
ff0dacd7 | 2764 | /* Invalid escape sequence. Just ignore it. */ |
df7492f9 KH |
2765 | break; |
2766 | } | |
d46c5b12 KH |
2767 | |
2768 | /* We found a valid designation sequence for CHARSET. */ | |
ff0dacd7 | 2769 | rejected |= CATEGORY_MASK_ISO_8BIT; |
df7492f9 KH |
2770 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_7], |
2771 | id)) | |
ff0dacd7 | 2772 | found |= CATEGORY_MASK_ISO_7; |
d46c5b12 | 2773 | else |
ff0dacd7 | 2774 | rejected |= CATEGORY_MASK_ISO_7; |
df7492f9 KH |
2775 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_7_tight], |
2776 | id)) | |
ff0dacd7 | 2777 | found |= CATEGORY_MASK_ISO_7_TIGHT; |
d46c5b12 | 2778 | else |
ff0dacd7 | 2779 | rejected |= CATEGORY_MASK_ISO_7_TIGHT; |
df7492f9 KH |
2780 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_7_else], |
2781 | id)) | |
ff0dacd7 | 2782 | found |= CATEGORY_MASK_ISO_7_ELSE; |
ae9ff118 | 2783 | else |
ff0dacd7 | 2784 | rejected |= CATEGORY_MASK_ISO_7_ELSE; |
df7492f9 KH |
2785 | if (SAFE_CHARSET_P (&coding_categories[coding_category_iso_8_else], |
2786 | id)) | |
ff0dacd7 | 2787 | found |= CATEGORY_MASK_ISO_8_ELSE; |
ae9ff118 | 2788 | else |
ff0dacd7 | 2789 | rejected |= CATEGORY_MASK_ISO_8_ELSE; |
4ed46869 KH |
2790 | break; |
2791 | ||
4ed46869 | 2792 | case ISO_CODE_SO: |
d46c5b12 | 2793 | case ISO_CODE_SI: |
ff0dacd7 | 2794 | /* Locking shift out/in. */ |
74383408 KH |
2795 | if (inhibit_iso_escape_detection) |
2796 | break; | |
f46869e4 | 2797 | single_shifting = 0; |
ff0dacd7 | 2798 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_8BIT; |
d46c5b12 KH |
2799 | break; |
2800 | ||
4ed46869 | 2801 | case ISO_CODE_CSI: |
ff0dacd7 | 2802 | /* Control sequence introducer. */ |
f46869e4 | 2803 | single_shifting = 0; |
ff0dacd7 KH |
2804 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_7_ELSE; |
2805 | found |= CATEGORY_MASK_ISO_8_ELSE; | |
2806 | goto check_extra_latin; | |
2807 | ||
4ed46869 KH |
2808 | case ISO_CODE_SS2: |
2809 | case ISO_CODE_SS3: | |
ff0dacd7 KH |
2810 | /* Single shift. */ |
2811 | if (inhibit_iso_escape_detection) | |
2812 | break; | |
75e2a253 | 2813 | single_shifting = 0; |
ff0dacd7 KH |
2814 | rejected |= CATEGORY_MASK_ISO_7BIT; |
2815 | if (CODING_ISO_FLAGS (&coding_categories[coding_category_iso_8_1]) | |
2816 | & CODING_ISO_FLAG_SINGLE_SHIFT) | |
75e2a253 | 2817 | found |= CATEGORY_MASK_ISO_8_1, single_shifting = 1; |
ff0dacd7 KH |
2818 | if (CODING_ISO_FLAGS (&coding_categories[coding_category_iso_8_2]) |
2819 | & CODING_ISO_FLAG_SINGLE_SHIFT) | |
75e2a253 KH |
2820 | found |= CATEGORY_MASK_ISO_8_2, single_shifting = 1; |
2821 | if (single_shifting) | |
2822 | break; | |
ff0dacd7 | 2823 | goto check_extra_latin; |
4ed46869 KH |
2824 | |
2825 | default: | |
065e3595 KH |
2826 | if (c < 0) |
2827 | continue; | |
4ed46869 | 2828 | if (c < 0x80) |
f46869e4 KH |
2829 | { |
2830 | single_shifting = 0; | |
2831 | break; | |
2832 | } | |
ff0dacd7 | 2833 | if (c >= 0xA0) |
c4825358 | 2834 | { |
ff0dacd7 KH |
2835 | rejected |= CATEGORY_MASK_ISO_7BIT | CATEGORY_MASK_ISO_7_ELSE; |
2836 | found |= CATEGORY_MASK_ISO_8_1; | |
f46869e4 | 2837 | /* Check the length of succeeding codes of the range |
ff0dacd7 KH |
2838 | 0xA0..0FF. If the byte length is even, we include |
2839 | CATEGORY_MASK_ISO_8_2 in `found'. We can check this | |
2840 | only when we are not single shifting. */ | |
2841 | if (! single_shifting | |
2842 | && ! (rejected & CATEGORY_MASK_ISO_8_2)) | |
f46869e4 | 2843 | { |
e17de821 | 2844 | int i = 1; |
b73bfc1c KH |
2845 | while (src < src_end) |
2846 | { | |
df7492f9 | 2847 | ONE_MORE_BYTE (c); |
b73bfc1c KH |
2848 | if (c < 0xA0) |
2849 | break; | |
2850 | i++; | |
2851 | } | |
2852 | ||
2853 | if (i & 1 && src < src_end) | |
ff0dacd7 | 2854 | rejected |= CATEGORY_MASK_ISO_8_2; |
f46869e4 | 2855 | else |
ff0dacd7 | 2856 | found |= CATEGORY_MASK_ISO_8_2; |
f46869e4 | 2857 | } |
ff0dacd7 | 2858 | break; |
4ed46869 | 2859 | } |
ff0dacd7 KH |
2860 | check_extra_latin: |
2861 | single_shifting = 0; | |
2862 | if (! VECTORP (Vlatin_extra_code_table) | |
2863 | || NILP (XVECTOR (Vlatin_extra_code_table)->contents[c])) | |
2864 | { | |
2865 | rejected = CATEGORY_MASK_ISO; | |
2866 | break; | |
2867 | } | |
2868 | if (CODING_ISO_FLAGS (&coding_categories[coding_category_iso_8_1]) | |
2869 | & CODING_ISO_FLAG_LATIN_EXTRA) | |
2870 | found |= CATEGORY_MASK_ISO_8_1; | |
2871 | else | |
2872 | rejected |= CATEGORY_MASK_ISO_8_1; | |
75e2a253 | 2873 | rejected |= CATEGORY_MASK_ISO_8_2; |
4ed46869 KH |
2874 | } |
2875 | } | |
ff0dacd7 KH |
2876 | detect_info->rejected |= CATEGORY_MASK_ISO; |
2877 | return 0; | |
4ed46869 | 2878 | |
df7492f9 | 2879 | no_more_source: |
ff0dacd7 KH |
2880 | detect_info->rejected |= rejected; |
2881 | detect_info->found |= (found & ~rejected); | |
df7492f9 | 2882 | return 1; |
4ed46869 | 2883 | } |
ec6d2bb8 | 2884 | |
4ed46869 | 2885 | |
134b9549 KH |
2886 | /* Set designation state into CODING. Set CHARS_96 to -1 if the |
2887 | escape sequence should be kept. */ | |
df7492f9 KH |
2888 | #define DECODE_DESIGNATION(reg, dim, chars_96, final) \ |
2889 | do { \ | |
2890 | int id, prev; \ | |
2891 | \ | |
2892 | if (final < '0' || final >= 128 \ | |
2893 | || ((id = ISO_CHARSET_TABLE (dim, chars_96, final)) < 0) \ | |
2894 | || !SAFE_CHARSET_P (coding, id)) \ | |
2895 | { \ | |
2896 | CODING_ISO_DESIGNATION (coding, reg) = -2; \ | |
134b9549 KH |
2897 | chars_96 = -1; \ |
2898 | break; \ | |
df7492f9 KH |
2899 | } \ |
2900 | prev = CODING_ISO_DESIGNATION (coding, reg); \ | |
bf16eb23 KH |
2901 | if (id == charset_jisx0201_roman) \ |
2902 | { \ | |
2903 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_ROMAN) \ | |
2904 | id = charset_ascii; \ | |
2905 | } \ | |
2906 | else if (id == charset_jisx0208_1978) \ | |
2907 | { \ | |
2908 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_OLDJIS) \ | |
2909 | id = charset_jisx0208; \ | |
2910 | } \ | |
df7492f9 KH |
2911 | CODING_ISO_DESIGNATION (coding, reg) = id; \ |
2912 | /* If there was an invalid designation to REG previously, and this \ | |
2913 | designation is ASCII to REG, we should keep this designation \ | |
2914 | sequence. */ \ | |
2915 | if (prev == -2 && id == charset_ascii) \ | |
134b9549 | 2916 | chars_96 = -1; \ |
4ed46869 KH |
2917 | } while (0) |
2918 | ||
d46c5b12 | 2919 | |
df7492f9 KH |
2920 | #define MAYBE_FINISH_COMPOSITION() \ |
2921 | do { \ | |
2922 | int i; \ | |
2923 | if (composition_state == COMPOSING_NO) \ | |
2924 | break; \ | |
2925 | /* It is assured that we have enough room for producing \ | |
2926 | characters stored in the table `components'. */ \ | |
2927 | if (charbuf + component_idx > charbuf_end) \ | |
2928 | goto no_more_source; \ | |
2929 | composition_state = COMPOSING_NO; \ | |
2930 | if (method == COMPOSITION_RELATIVE \ | |
2931 | || method == COMPOSITION_WITH_ALTCHARS) \ | |
2932 | { \ | |
2933 | for (i = 0; i < component_idx; i++) \ | |
2934 | *charbuf++ = components[i]; \ | |
2935 | char_offset += component_idx; \ | |
2936 | } \ | |
2937 | else \ | |
2938 | { \ | |
2939 | for (i = 0; i < component_idx; i += 2) \ | |
2940 | *charbuf++ = components[i]; \ | |
2941 | char_offset += (component_idx / 2) + 1; \ | |
2942 | } \ | |
2943 | } while (0) | |
2944 | ||
d46c5b12 | 2945 | |
aa72b389 KH |
2946 | /* Handle composition start sequence ESC 0, ESC 2, ESC 3, or ESC 4. |
2947 | ESC 0 : relative composition : ESC 0 CHAR ... ESC 1 | |
2948 | ESC 2 : rulebase composition : ESC 2 CHAR RULE CHAR RULE ... CHAR ESC 1 | |
df7492f9 KH |
2949 | ESC 3 : altchar composition : ESC 3 CHAR ... ESC 0 CHAR ... ESC 1 |
2950 | ESC 4 : alt&rule composition : ESC 4 CHAR RULE ... CHAR ESC 0 CHAR ... ESC 1 | |
aa72b389 | 2951 | */ |
ec6d2bb8 | 2952 | |
df7492f9 KH |
2953 | #define DECODE_COMPOSITION_START(c1) \ |
2954 | do { \ | |
2955 | if (c1 == '0' \ | |
781d7a48 | 2956 | && composition_state == COMPOSING_COMPONENT_RULE) \ |
df7492f9 KH |
2957 | { \ |
2958 | component_len = component_idx; \ | |
2959 | composition_state = COMPOSING_CHAR; \ | |
2960 | } \ | |
2961 | else \ | |
2962 | { \ | |
8f924df7 | 2963 | const unsigned char *p; \ |
df7492f9 KH |
2964 | \ |
2965 | MAYBE_FINISH_COMPOSITION (); \ | |
2966 | if (charbuf + MAX_COMPOSITION_COMPONENTS > charbuf_end) \ | |
2967 | goto no_more_source; \ | |
2968 | for (p = src; p < src_end - 1; p++) \ | |
2969 | if (*p == ISO_CODE_ESC && p[1] == '1') \ | |
2970 | break; \ | |
2971 | if (p == src_end - 1) \ | |
2972 | { \ | |
9286b333 KH |
2973 | /* The current composition doesn't end in the current \ |
2974 | source. */ \ | |
2975 | record_conversion_result \ | |
2976 | (coding, CODING_RESULT_INSUFFICIENT_SRC); \ | |
df7492f9 KH |
2977 | goto no_more_source; \ |
2978 | } \ | |
2979 | \ | |
2980 | /* This is surely the start of a composition. */ \ | |
2981 | method = (c1 == '0' ? COMPOSITION_RELATIVE \ | |
2982 | : c1 == '2' ? COMPOSITION_WITH_RULE \ | |
2983 | : c1 == '3' ? COMPOSITION_WITH_ALTCHARS \ | |
2984 | : COMPOSITION_WITH_RULE_ALTCHARS); \ | |
2985 | composition_state = (c1 <= '2' ? COMPOSING_CHAR \ | |
2986 | : COMPOSING_COMPONENT_CHAR); \ | |
2987 | component_idx = component_len = 0; \ | |
2988 | } \ | |
ec6d2bb8 KH |
2989 | } while (0) |
2990 | ||
ec6d2bb8 | 2991 | |
df7492f9 KH |
2992 | /* Handle compositoin end sequence ESC 1. */ |
2993 | ||
2994 | #define DECODE_COMPOSITION_END() \ | |
ec6d2bb8 | 2995 | do { \ |
df7492f9 KH |
2996 | int nchars = (component_len > 0 ? component_idx - component_len \ |
2997 | : method == COMPOSITION_RELATIVE ? component_idx \ | |
2998 | : (component_idx + 1) / 2); \ | |
2999 | int i; \ | |
3000 | int *saved_charbuf = charbuf; \ | |
3001 | \ | |
69a80ea3 | 3002 | ADD_COMPOSITION_DATA (charbuf, nchars, method); \ |
df7492f9 | 3003 | if (method != COMPOSITION_RELATIVE) \ |
ec6d2bb8 | 3004 | { \ |
df7492f9 KH |
3005 | if (component_len == 0) \ |
3006 | for (i = 0; i < component_idx; i++) \ | |
3007 | *charbuf++ = components[i]; \ | |
3008 | else \ | |
3009 | for (i = 0; i < component_len; i++) \ | |
3010 | *charbuf++ = components[i]; \ | |
3011 | *saved_charbuf = saved_charbuf - charbuf; \ | |
ec6d2bb8 | 3012 | } \ |
df7492f9 KH |
3013 | if (method == COMPOSITION_WITH_RULE) \ |
3014 | for (i = 0; i < component_idx; i += 2, char_offset++) \ | |
3015 | *charbuf++ = components[i]; \ | |
ec6d2bb8 | 3016 | else \ |
df7492f9 KH |
3017 | for (i = component_len; i < component_idx; i++, char_offset++) \ |
3018 | *charbuf++ = components[i]; \ | |
3019 | coding->annotated = 1; \ | |
3020 | composition_state = COMPOSING_NO; \ | |
ec6d2bb8 KH |
3021 | } while (0) |
3022 | ||
df7492f9 | 3023 | |
ec6d2bb8 KH |
3024 | /* Decode a composition rule from the byte C1 (and maybe one more byte |
3025 | from SRC) and store one encoded composition rule in | |
3026 | coding->cmp_data. */ | |
3027 | ||
3028 | #define DECODE_COMPOSITION_RULE(c1) \ | |
3029 | do { \ | |
ec6d2bb8 KH |
3030 | (c1) -= 32; \ |
3031 | if (c1 < 81) /* old format (before ver.21) */ \ | |
3032 | { \ | |
3033 | int gref = (c1) / 9; \ | |
3034 | int nref = (c1) % 9; \ | |
3035 | if (gref == 4) gref = 10; \ | |
3036 | if (nref == 4) nref = 10; \ | |
df7492f9 | 3037 | c1 = COMPOSITION_ENCODE_RULE (gref, nref); \ |
ec6d2bb8 | 3038 | } \ |
b73bfc1c | 3039 | else if (c1 < 93) /* new format (after ver.21) */ \ |
ec6d2bb8 KH |
3040 | { \ |
3041 | ONE_MORE_BYTE (c2); \ | |
df7492f9 | 3042 | c1 = COMPOSITION_ENCODE_RULE (c1 - 81, c2 - 32); \ |
ec6d2bb8 | 3043 | } \ |
df7492f9 KH |
3044 | else \ |
3045 | c1 = 0; \ | |
ec6d2bb8 | 3046 | } while (0) |
88993dfd | 3047 | |
d46c5b12 | 3048 | |
4ed46869 KH |
3049 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". */ |
3050 | ||
b73bfc1c | 3051 | static void |
df7492f9 | 3052 | decode_coding_iso_2022 (coding) |
4ed46869 | 3053 | struct coding_system *coding; |
4ed46869 | 3054 | { |
8f924df7 KH |
3055 | const unsigned char *src = coding->source + coding->consumed; |
3056 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
3057 | const unsigned char *src_base; | |
69a80ea3 | 3058 | int *charbuf = coding->charbuf + coding->charbuf_used; |
ff0dacd7 | 3059 | int *charbuf_end |
69a80ea3 | 3060 | = coding->charbuf + coding->charbuf_size - 4 - MAX_ANNOTATION_LENGTH; |
df7492f9 | 3061 | int consumed_chars = 0, consumed_chars_base; |
df7492f9 | 3062 | int multibytep = coding->src_multibyte; |
4ed46869 | 3063 | /* Charsets invoked to graphic plane 0 and 1 respectively. */ |
df7492f9 KH |
3064 | int charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); |
3065 | int charset_id_1 = CODING_ISO_INVOKED_CHARSET (coding, 1); | |
134b9549 | 3066 | int charset_id_2, charset_id_3; |
df7492f9 KH |
3067 | struct charset *charset; |
3068 | int c; | |
3069 | /* For handling composition sequence. */ | |
3070 | #define COMPOSING_NO 0 | |
3071 | #define COMPOSING_CHAR 1 | |
3072 | #define COMPOSING_RULE 2 | |
3073 | #define COMPOSING_COMPONENT_CHAR 3 | |
3074 | #define COMPOSING_COMPONENT_RULE 4 | |
3075 | ||
3076 | int composition_state = COMPOSING_NO; | |
3077 | enum composition_method method; | |
3078 | int components[MAX_COMPOSITION_COMPONENTS * 2 + 1]; | |
3079 | int component_idx; | |
3080 | int component_len; | |
24a73b0a | 3081 | Lisp_Object attrs, charset_list; |
ff0dacd7 KH |
3082 | int char_offset = coding->produced_char; |
3083 | int last_offset = char_offset; | |
3084 | int last_id = charset_ascii; | |
119852e7 KH |
3085 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
3086 | int byte_after_cr = -1; | |
df7492f9 | 3087 | |
24a73b0a | 3088 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 | 3089 | setup_iso_safe_charsets (attrs); |
287c57d7 KH |
3090 | /* Charset list may have been changed. */ |
3091 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
3092 | coding->safe_charsets = (char *) SDATA (CODING_ATTR_SAFE_CHARSETS(attrs)); | |
b73bfc1c KH |
3093 | |
3094 | while (1) | |
4ed46869 | 3095 | { |
463f5630 | 3096 | int c1, c2; |
b73bfc1c KH |
3097 | |
3098 | src_base = src; | |
df7492f9 KH |
3099 | consumed_chars_base = consumed_chars; |
3100 | ||
3101 | if (charbuf >= charbuf_end) | |
3102 | break; | |
3103 | ||
119852e7 KH |
3104 | if (byte_after_cr >= 0) |
3105 | c1 = byte_after_cr, byte_after_cr = -1; | |
3106 | else | |
3107 | ONE_MORE_BYTE (c1); | |
065e3595 KH |
3108 | if (c1 < 0) |
3109 | goto invalid_code; | |
4ed46869 | 3110 | |
98725083 | 3111 | /* We produce at most one character. */ |
4ed46869 KH |
3112 | switch (iso_code_class [c1]) |
3113 | { | |
3114 | case ISO_0x20_or_0x7F: | |
df7492f9 | 3115 | if (composition_state != COMPOSING_NO) |
ec6d2bb8 | 3116 | { |
df7492f9 KH |
3117 | if (composition_state == COMPOSING_RULE |
3118 | || composition_state == COMPOSING_COMPONENT_RULE) | |
3119 | { | |
3120 | DECODE_COMPOSITION_RULE (c1); | |
3121 | components[component_idx++] = c1; | |
3122 | composition_state--; | |
3123 | continue; | |
3124 | } | |
4ed46869 | 3125 | } |
df7492f9 KH |
3126 | if (charset_id_0 < 0 |
3127 | || ! CHARSET_ISO_CHARS_96 (CHARSET_FROM_ID (charset_id_0))) | |
781d7a48 KH |
3128 | /* This is SPACE or DEL. */ |
3129 | charset = CHARSET_FROM_ID (charset_ascii); | |
3130 | else | |
3131 | charset = CHARSET_FROM_ID (charset_id_0); | |
3132 | break; | |
4ed46869 KH |
3133 | |
3134 | case ISO_graphic_plane_0: | |
781d7a48 | 3135 | if (composition_state != COMPOSING_NO) |
b73bfc1c | 3136 | { |
781d7a48 KH |
3137 | if (composition_state == COMPOSING_RULE |
3138 | || composition_state == COMPOSING_COMPONENT_RULE) | |
3139 | { | |
3140 | DECODE_COMPOSITION_RULE (c1); | |
3141 | components[component_idx++] = c1; | |
3142 | composition_state--; | |
3143 | continue; | |
3144 | } | |
b73bfc1c | 3145 | } |
134b9549 KH |
3146 | if (charset_id_0 < 0) |
3147 | charset = CHARSET_FROM_ID (charset_ascii); | |
3148 | else | |
3149 | charset = CHARSET_FROM_ID (charset_id_0); | |
4ed46869 KH |
3150 | break; |
3151 | ||
3152 | case ISO_0xA0_or_0xFF: | |
df7492f9 KH |
3153 | if (charset_id_1 < 0 |
3154 | || ! CHARSET_ISO_CHARS_96 (CHARSET_FROM_ID (charset_id_1)) | |
3155 | || CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) | |
3156 | goto invalid_code; | |
4ed46869 KH |
3157 | /* This is a graphic character, we fall down ... */ |
3158 | ||
3159 | case ISO_graphic_plane_1: | |
df7492f9 KH |
3160 | if (charset_id_1 < 0) |
3161 | goto invalid_code; | |
3162 | charset = CHARSET_FROM_ID (charset_id_1); | |
4ed46869 KH |
3163 | break; |
3164 | ||
df7492f9 | 3165 | case ISO_control_0: |
119852e7 KH |
3166 | if (eol_crlf && c1 == '\r') |
3167 | ONE_MORE_BYTE (byte_after_cr); | |
df7492f9 KH |
3168 | MAYBE_FINISH_COMPOSITION (); |
3169 | charset = CHARSET_FROM_ID (charset_ascii); | |
4ed46869 KH |
3170 | break; |
3171 | ||
df7492f9 KH |
3172 | case ISO_control_1: |
3173 | MAYBE_FINISH_COMPOSITION (); | |
3174 | goto invalid_code; | |
3175 | ||
4ed46869 | 3176 | case ISO_shift_out: |
df7492f9 KH |
3177 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT) |
3178 | || CODING_ISO_DESIGNATION (coding, 1) < 0) | |
3179 | goto invalid_code; | |
3180 | CODING_ISO_INVOCATION (coding, 0) = 1; | |
3181 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3182 | continue; |
4ed46869 KH |
3183 | |
3184 | case ISO_shift_in: | |
df7492f9 KH |
3185 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT)) |
3186 | goto invalid_code; | |
3187 | CODING_ISO_INVOCATION (coding, 0) = 0; | |
3188 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3189 | continue; |
4ed46869 KH |
3190 | |
3191 | case ISO_single_shift_2_7: | |
3192 | case ISO_single_shift_2: | |
df7492f9 KH |
3193 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT)) |
3194 | goto invalid_code; | |
4ed46869 KH |
3195 | /* SS2 is handled as an escape sequence of ESC 'N' */ |
3196 | c1 = 'N'; | |
3197 | goto label_escape_sequence; | |
3198 | ||
3199 | case ISO_single_shift_3: | |
df7492f9 KH |
3200 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT)) |
3201 | goto invalid_code; | |
4ed46869 KH |
3202 | /* SS2 is handled as an escape sequence of ESC 'O' */ |
3203 | c1 = 'O'; | |
3204 | goto label_escape_sequence; | |
3205 | ||
3206 | case ISO_control_sequence_introducer: | |
3207 | /* CSI is handled as an escape sequence of ESC '[' ... */ | |
3208 | c1 = '['; | |
3209 | goto label_escape_sequence; | |
3210 | ||
3211 | case ISO_escape: | |
3212 | ONE_MORE_BYTE (c1); | |
3213 | label_escape_sequence: | |
df7492f9 | 3214 | /* Escape sequences handled here are invocation, |
4ed46869 KH |
3215 | designation, direction specification, and character |
3216 | composition specification. */ | |
3217 | switch (c1) | |
3218 | { | |
3219 | case '&': /* revision of following character set */ | |
3220 | ONE_MORE_BYTE (c1); | |
3221 | if (!(c1 >= '@' && c1 <= '~')) | |
df7492f9 | 3222 | goto invalid_code; |
4ed46869 KH |
3223 | ONE_MORE_BYTE (c1); |
3224 | if (c1 != ISO_CODE_ESC) | |
df7492f9 | 3225 | goto invalid_code; |
4ed46869 KH |
3226 | ONE_MORE_BYTE (c1); |
3227 | goto label_escape_sequence; | |
3228 | ||
3229 | case '$': /* designation of 2-byte character set */ | |
df7492f9 KH |
3230 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATION)) |
3231 | goto invalid_code; | |
134b9549 KH |
3232 | { |
3233 | int reg, chars96; | |
3234 | ||
3235 | ONE_MORE_BYTE (c1); | |
3236 | if (c1 >= '@' && c1 <= 'B') | |
3237 | { /* designation of JISX0208.1978, GB2312.1980, | |
88993dfd | 3238 | or JISX0208.1980 */ |
134b9549 KH |
3239 | reg = 0, chars96 = 0; |
3240 | } | |
3241 | else if (c1 >= 0x28 && c1 <= 0x2B) | |
3242 | { /* designation of DIMENSION2_CHARS94 character set */ | |
3243 | reg = c1 - 0x28, chars96 = 0; | |
3244 | ONE_MORE_BYTE (c1); | |
3245 | } | |
3246 | else if (c1 >= 0x2C && c1 <= 0x2F) | |
3247 | { /* designation of DIMENSION2_CHARS96 character set */ | |
3248 | reg = c1 - 0x2C, chars96 = 1; | |
3249 | ONE_MORE_BYTE (c1); | |
3250 | } | |
3251 | else | |
3252 | goto invalid_code; | |
3253 | DECODE_DESIGNATION (reg, 2, chars96, c1); | |
3254 | /* We must update these variables now. */ | |
3255 | if (reg == 0) | |
3256 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
3257 | else if (reg == 1) | |
3258 | charset_id_1 = CODING_ISO_INVOKED_CHARSET (coding, 1); | |
3259 | if (chars96 < 0) | |
3260 | goto invalid_code; | |
3261 | } | |
b73bfc1c | 3262 | continue; |
4ed46869 KH |
3263 | |
3264 | case 'n': /* invocation of locking-shift-2 */ | |
df7492f9 KH |
3265 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT) |
3266 | || CODING_ISO_DESIGNATION (coding, 2) < 0) | |
3267 | goto invalid_code; | |
3268 | CODING_ISO_INVOCATION (coding, 0) = 2; | |
3269 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3270 | continue; |
4ed46869 KH |
3271 | |
3272 | case 'o': /* invocation of locking-shift-3 */ | |
df7492f9 KH |
3273 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LOCKING_SHIFT) |
3274 | || CODING_ISO_DESIGNATION (coding, 3) < 0) | |
3275 | goto invalid_code; | |
3276 | CODING_ISO_INVOCATION (coding, 0) = 3; | |
3277 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
b73bfc1c | 3278 | continue; |
4ed46869 KH |
3279 | |
3280 | case 'N': /* invocation of single-shift-2 */ | |
df7492f9 KH |
3281 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
3282 | || CODING_ISO_DESIGNATION (coding, 2) < 0) | |
3283 | goto invalid_code; | |
134b9549 KH |
3284 | charset_id_2 = CODING_ISO_DESIGNATION (coding, 2); |
3285 | if (charset_id_2 < 0) | |
3286 | charset = CHARSET_FROM_ID (charset_ascii); | |
3287 | else | |
3288 | charset = CHARSET_FROM_ID (charset_id_2); | |
b73bfc1c | 3289 | ONE_MORE_BYTE (c1); |
e7046a18 | 3290 | if (c1 < 0x20 || (c1 >= 0x80 && c1 < 0xA0)) |
df7492f9 | 3291 | goto invalid_code; |
4ed46869 KH |
3292 | break; |
3293 | ||
3294 | case 'O': /* invocation of single-shift-3 */ | |
df7492f9 KH |
3295 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
3296 | || CODING_ISO_DESIGNATION (coding, 3) < 0) | |
3297 | goto invalid_code; | |
134b9549 KH |
3298 | charset_id_3 = CODING_ISO_DESIGNATION (coding, 3); |
3299 | if (charset_id_3 < 0) | |
3300 | charset = CHARSET_FROM_ID (charset_ascii); | |
3301 | else | |
3302 | charset = CHARSET_FROM_ID (charset_id_3); | |
b73bfc1c | 3303 | ONE_MORE_BYTE (c1); |
e7046a18 | 3304 | if (c1 < 0x20 || (c1 >= 0x80 && c1 < 0xA0)) |
df7492f9 | 3305 | goto invalid_code; |
4ed46869 KH |
3306 | break; |
3307 | ||
ec6d2bb8 | 3308 | case '0': case '2': case '3': case '4': /* start composition */ |
df7492f9 KH |
3309 | if (! (coding->common_flags & CODING_ANNOTATE_COMPOSITION_MASK)) |
3310 | goto invalid_code; | |
ec6d2bb8 | 3311 | DECODE_COMPOSITION_START (c1); |
b73bfc1c | 3312 | continue; |
4ed46869 | 3313 | |
ec6d2bb8 | 3314 | case '1': /* end composition */ |
df7492f9 KH |
3315 | if (composition_state == COMPOSING_NO) |
3316 | goto invalid_code; | |
3317 | DECODE_COMPOSITION_END (); | |
b73bfc1c | 3318 | continue; |
4ed46869 KH |
3319 | |
3320 | case '[': /* specification of direction */ | |
df7492f9 KH |
3321 | if (! CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DIRECTION) |
3322 | goto invalid_code; | |
4ed46869 | 3323 | /* For the moment, nested direction is not supported. |
d46c5b12 | 3324 | So, `coding->mode & CODING_MODE_DIRECTION' zero means |
df7492f9 | 3325 | left-to-right, and nozero means right-to-left. */ |
4ed46869 KH |
3326 | ONE_MORE_BYTE (c1); |
3327 | switch (c1) | |
3328 | { | |
3329 | case ']': /* end of the current direction */ | |
d46c5b12 | 3330 | coding->mode &= ~CODING_MODE_DIRECTION; |
4ed46869 KH |
3331 | |
3332 | case '0': /* end of the current direction */ | |
3333 | case '1': /* start of left-to-right direction */ | |
3334 | ONE_MORE_BYTE (c1); | |
3335 | if (c1 == ']') | |
d46c5b12 | 3336 | coding->mode &= ~CODING_MODE_DIRECTION; |
4ed46869 | 3337 | else |
df7492f9 | 3338 | goto invalid_code; |
4ed46869 KH |
3339 | break; |
3340 | ||
3341 | case '2': /* start of right-to-left direction */ | |
3342 | ONE_MORE_BYTE (c1); | |
3343 | if (c1 == ']') | |
d46c5b12 | 3344 | coding->mode |= CODING_MODE_DIRECTION; |
4ed46869 | 3345 | else |
df7492f9 | 3346 | goto invalid_code; |
4ed46869 KH |
3347 | break; |
3348 | ||
3349 | default: | |
df7492f9 | 3350 | goto invalid_code; |
4ed46869 | 3351 | } |
b73bfc1c | 3352 | continue; |
4ed46869 | 3353 | |
103e0180 | 3354 | case '%': |
103e0180 KH |
3355 | ONE_MORE_BYTE (c1); |
3356 | if (c1 == '/') | |
3357 | { | |
3358 | /* CTEXT extended segment: | |
3359 | ESC % / [0-4] M L --ENCODING-NAME-- \002 --BYTES-- | |
3360 | We keep these bytes as is for the moment. | |
3361 | They may be decoded by post-read-conversion. */ | |
3362 | int dim, M, L; | |
4776e638 | 3363 | int size; |
8f924df7 | 3364 | |
103e0180 KH |
3365 | ONE_MORE_BYTE (dim); |
3366 | ONE_MORE_BYTE (M); | |
3367 | ONE_MORE_BYTE (L); | |
3368 | size = ((M - 128) * 128) + (L - 128); | |
4776e638 KH |
3369 | if (charbuf + 8 + size > charbuf_end) |
3370 | goto break_loop; | |
3371 | *charbuf++ = ISO_CODE_ESC; | |
3372 | *charbuf++ = '%'; | |
3373 | *charbuf++ = '/'; | |
3374 | *charbuf++ = dim; | |
3375 | *charbuf++ = BYTE8_TO_CHAR (M); | |
3376 | *charbuf++ = BYTE8_TO_CHAR (L); | |
103e0180 KH |
3377 | while (size-- > 0) |
3378 | { | |
3379 | ONE_MORE_BYTE (c1); | |
4776e638 | 3380 | *charbuf++ = ASCII_BYTE_P (c1) ? c1 : BYTE8_TO_CHAR (c1); |
103e0180 | 3381 | } |
103e0180 KH |
3382 | } |
3383 | else if (c1 == 'G') | |
3384 | { | |
103e0180 KH |
3385 | /* XFree86 extension for embedding UTF-8 in CTEXT: |
3386 | ESC % G --UTF-8-BYTES-- ESC % @ | |
3387 | We keep these bytes as is for the moment. | |
3388 | They may be decoded by post-read-conversion. */ | |
4776e638 KH |
3389 | int *p = charbuf; |
3390 | ||
3391 | if (p + 6 > charbuf_end) | |
3392 | goto break_loop; | |
3393 | *p++ = ISO_CODE_ESC; | |
3394 | *p++ = '%'; | |
3395 | *p++ = 'G'; | |
3396 | while (p < charbuf_end) | |
103e0180 KH |
3397 | { |
3398 | ONE_MORE_BYTE (c1); | |
3399 | if (c1 == ISO_CODE_ESC | |
3400 | && src + 1 < src_end | |
3401 | && src[0] == '%' | |
3402 | && src[1] == '@') | |
9ffd559c KH |
3403 | { |
3404 | src += 2; | |
3405 | break; | |
3406 | } | |
4776e638 | 3407 | *p++ = ASCII_BYTE_P (c1) ? c1 : BYTE8_TO_CHAR (c1); |
103e0180 | 3408 | } |
4776e638 KH |
3409 | if (p + 3 > charbuf_end) |
3410 | goto break_loop; | |
3411 | *p++ = ISO_CODE_ESC; | |
3412 | *p++ = '%'; | |
3413 | *p++ = '@'; | |
3414 | charbuf = p; | |
103e0180 KH |
3415 | } |
3416 | else | |
4776e638 | 3417 | goto invalid_code; |
103e0180 | 3418 | continue; |
4776e638 | 3419 | break; |
103e0180 | 3420 | |
4ed46869 | 3421 | default: |
df7492f9 KH |
3422 | if (! (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATION)) |
3423 | goto invalid_code; | |
134b9549 KH |
3424 | { |
3425 | int reg, chars96; | |
3426 | ||
3427 | if (c1 >= 0x28 && c1 <= 0x2B) | |
3428 | { /* designation of DIMENSION1_CHARS94 character set */ | |
3429 | reg = c1 - 0x28, chars96 = 0; | |
3430 | ONE_MORE_BYTE (c1); | |
3431 | } | |
3432 | else if (c1 >= 0x2C && c1 <= 0x2F) | |
3433 | { /* designation of DIMENSION1_CHARS96 character set */ | |
3434 | reg = c1 - 0x2C, chars96 = 1; | |
3435 | ONE_MORE_BYTE (c1); | |
3436 | } | |
3437 | else | |
3438 | goto invalid_code; | |
3439 | DECODE_DESIGNATION (reg, 1, chars96, c1); | |
3440 | /* We must update these variables now. */ | |
3441 | if (reg == 0) | |
3442 | charset_id_0 = CODING_ISO_INVOKED_CHARSET (coding, 0); | |
3443 | else if (reg == 1) | |
3444 | charset_id_1 = CODING_ISO_INVOKED_CHARSET (coding, 1); | |
3445 | if (chars96 < 0) | |
3446 | goto invalid_code; | |
3447 | } | |
b73bfc1c | 3448 | continue; |
4ed46869 | 3449 | } |
b73bfc1c | 3450 | } |
4ed46869 | 3451 | |
ff0dacd7 KH |
3452 | if (charset->id != charset_ascii |
3453 | && last_id != charset->id) | |
3454 | { | |
3455 | if (last_id != charset_ascii) | |
69a80ea3 | 3456 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
ff0dacd7 KH |
3457 | last_id = charset->id; |
3458 | last_offset = char_offset; | |
3459 | } | |
3460 | ||
b73bfc1c | 3461 | /* Now we know CHARSET and 1st position code C1 of a character. |
df7492f9 KH |
3462 | Produce a decoded character while getting 2nd position code |
3463 | C2 if necessary. */ | |
3464 | c1 &= 0x7F; | |
3465 | if (CHARSET_DIMENSION (charset) > 1) | |
b73bfc1c KH |
3466 | { |
3467 | ONE_MORE_BYTE (c2); | |
df7492f9 | 3468 | if (c2 < 0x20 || (c2 >= 0x80 && c2 < 0xA0)) |
b73bfc1c | 3469 | /* C2 is not in a valid range. */ |
df7492f9 KH |
3470 | goto invalid_code; |
3471 | c1 = (c1 << 8) | (c2 & 0x7F); | |
3472 | if (CHARSET_DIMENSION (charset) > 2) | |
3473 | { | |
3474 | ONE_MORE_BYTE (c2); | |
3475 | if (c2 < 0x20 || (c2 >= 0x80 && c2 < 0xA0)) | |
3476 | /* C2 is not in a valid range. */ | |
3477 | goto invalid_code; | |
3478 | c1 = (c1 << 8) | (c2 & 0x7F); | |
3479 | } | |
3480 | } | |
3481 | ||
3482 | CODING_DECODE_CHAR (coding, src, src_base, src_end, charset, c1, c); | |
3483 | if (c < 0) | |
3484 | { | |
3485 | MAYBE_FINISH_COMPOSITION (); | |
3486 | for (; src_base < src; src_base++, char_offset++) | |
3487 | { | |
3488 | if (ASCII_BYTE_P (*src_base)) | |
3489 | *charbuf++ = *src_base; | |
3490 | else | |
3491 | *charbuf++ = BYTE8_TO_CHAR (*src_base); | |
3492 | } | |
3493 | } | |
3494 | else if (composition_state == COMPOSING_NO) | |
3495 | { | |
3496 | *charbuf++ = c; | |
3497 | char_offset++; | |
4ed46869 | 3498 | } |
df7492f9 | 3499 | else |
781d7a48 KH |
3500 | { |
3501 | components[component_idx++] = c; | |
3502 | if (method == COMPOSITION_WITH_RULE | |
3503 | || (method == COMPOSITION_WITH_RULE_ALTCHARS | |
3504 | && composition_state == COMPOSING_COMPONENT_CHAR)) | |
3505 | composition_state++; | |
4ed46869 KH |
3506 | } |
3507 | continue; | |
3508 | ||
df7492f9 KH |
3509 | invalid_code: |
3510 | MAYBE_FINISH_COMPOSITION (); | |
4ed46869 | 3511 | src = src_base; |
df7492f9 KH |
3512 | consumed_chars = consumed_chars_base; |
3513 | ONE_MORE_BYTE (c); | |
065e3595 | 3514 | *charbuf++ = c < 0 ? -c : ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 3515 | char_offset++; |
df7492f9 | 3516 | coding->errors++; |
4776e638 KH |
3517 | continue; |
3518 | ||
3519 | break_loop: | |
3520 | break; | |
4ed46869 | 3521 | } |
fb88bf2d | 3522 | |
df7492f9 | 3523 | no_more_source: |
ff0dacd7 | 3524 | if (last_id != charset_ascii) |
69a80ea3 | 3525 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
3526 | coding->consumed_char += consumed_chars_base; |
3527 | coding->consumed = src_base - coding->source; | |
3528 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
3529 | } |
3530 | ||
b73bfc1c | 3531 | |
f4dee582 | 3532 | /* ISO2022 encoding stuff. */ |
4ed46869 KH |
3533 | |
3534 | /* | |
f4dee582 | 3535 | It is not enough to say just "ISO2022" on encoding, we have to |
df7492f9 | 3536 | specify more details. In Emacs, each coding system of ISO2022 |
4ed46869 | 3537 | variant has the following specifications: |
df7492f9 | 3538 | 1. Initial designation to G0 thru G3. |
4ed46869 KH |
3539 | 2. Allows short-form designation? |
3540 | 3. ASCII should be designated to G0 before control characters? | |
3541 | 4. ASCII should be designated to G0 at end of line? | |
3542 | 5. 7-bit environment or 8-bit environment? | |
3543 | 6. Use locking-shift? | |
3544 | 7. Use Single-shift? | |
3545 | And the following two are only for Japanese: | |
3546 | 8. Use ASCII in place of JIS0201-1976-Roman? | |
3547 | 9. Use JISX0208-1983 in place of JISX0208-1978? | |
df7492f9 KH |
3548 | These specifications are encoded in CODING_ISO_FLAGS (coding) as flag bits |
3549 | defined by macros CODING_ISO_FLAG_XXX. See `coding.h' for more | |
f4dee582 | 3550 | details. |
4ed46869 KH |
3551 | */ |
3552 | ||
3553 | /* Produce codes (escape sequence) for designating CHARSET to graphic | |
b73bfc1c KH |
3554 | register REG at DST, and increment DST. If <final-char> of CHARSET is |
3555 | '@', 'A', or 'B' and the coding system CODING allows, produce | |
3556 | designation sequence of short-form. */ | |
4ed46869 KH |
3557 | |
3558 | #define ENCODE_DESIGNATION(charset, reg, coding) \ | |
3559 | do { \ | |
df7492f9 | 3560 | unsigned char final_char = CHARSET_ISO_FINAL (charset); \ |
4ed46869 KH |
3561 | char *intermediate_char_94 = "()*+"; \ |
3562 | char *intermediate_char_96 = ",-./"; \ | |
df7492f9 KH |
3563 | int revision = -1; \ |
3564 | int c; \ | |
3565 | \ | |
3566 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_REVISION) \ | |
c197f191 | 3567 | revision = CHARSET_ISO_REVISION (charset); \ |
df7492f9 KH |
3568 | \ |
3569 | if (revision >= 0) \ | |
70c22245 | 3570 | { \ |
df7492f9 KH |
3571 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, '&'); \ |
3572 | EMIT_ONE_BYTE ('@' + revision); \ | |
4ed46869 | 3573 | } \ |
df7492f9 | 3574 | EMIT_ONE_ASCII_BYTE (ISO_CODE_ESC); \ |
4ed46869 KH |
3575 | if (CHARSET_DIMENSION (charset) == 1) \ |
3576 | { \ | |
df7492f9 KH |
3577 | if (! CHARSET_ISO_CHARS_96 (charset)) \ |
3578 | c = intermediate_char_94[reg]; \ | |
4ed46869 | 3579 | else \ |
df7492f9 KH |
3580 | c = intermediate_char_96[reg]; \ |
3581 | EMIT_ONE_ASCII_BYTE (c); \ | |
4ed46869 KH |
3582 | } \ |
3583 | else \ | |
3584 | { \ | |
df7492f9 KH |
3585 | EMIT_ONE_ASCII_BYTE ('$'); \ |
3586 | if (! CHARSET_ISO_CHARS_96 (charset)) \ | |
4ed46869 | 3587 | { \ |
df7492f9 | 3588 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_LONG_FORM \ |
b73bfc1c KH |
3589 | || reg != 0 \ |
3590 | || final_char < '@' || final_char > 'B') \ | |
df7492f9 | 3591 | EMIT_ONE_ASCII_BYTE (intermediate_char_94[reg]); \ |
4ed46869 KH |
3592 | } \ |
3593 | else \ | |
df7492f9 | 3594 | EMIT_ONE_ASCII_BYTE (intermediate_char_96[reg]); \ |
4ed46869 | 3595 | } \ |
df7492f9 KH |
3596 | EMIT_ONE_ASCII_BYTE (final_char); \ |
3597 | \ | |
3598 | CODING_ISO_DESIGNATION (coding, reg) = CHARSET_ID (charset); \ | |
4ed46869 KH |
3599 | } while (0) |
3600 | ||
df7492f9 | 3601 | |
4ed46869 KH |
3602 | /* The following two macros produce codes (control character or escape |
3603 | sequence) for ISO2022 single-shift functions (single-shift-2 and | |
3604 | single-shift-3). */ | |
3605 | ||
df7492f9 KH |
3606 | #define ENCODE_SINGLE_SHIFT_2 \ |
3607 | do { \ | |
3608 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ | |
3609 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'N'); \ | |
3610 | else \ | |
3611 | EMIT_ONE_BYTE (ISO_CODE_SS2); \ | |
3612 | CODING_ISO_SINGLE_SHIFTING (coding) = 1; \ | |
4ed46869 KH |
3613 | } while (0) |
3614 | ||
df7492f9 KH |
3615 | |
3616 | #define ENCODE_SINGLE_SHIFT_3 \ | |
3617 | do { \ | |
3618 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ | |
3619 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'O'); \ | |
3620 | else \ | |
3621 | EMIT_ONE_BYTE (ISO_CODE_SS3); \ | |
3622 | CODING_ISO_SINGLE_SHIFTING (coding) = 1; \ | |
4ed46869 KH |
3623 | } while (0) |
3624 | ||
df7492f9 | 3625 | |
4ed46869 KH |
3626 | /* The following four macros produce codes (control character or |
3627 | escape sequence) for ISO2022 locking-shift functions (shift-in, | |
3628 | shift-out, locking-shift-2, and locking-shift-3). */ | |
3629 | ||
df7492f9 KH |
3630 | #define ENCODE_SHIFT_IN \ |
3631 | do { \ | |
3632 | EMIT_ONE_ASCII_BYTE (ISO_CODE_SI); \ | |
3633 | CODING_ISO_INVOCATION (coding, 0) = 0; \ | |
4ed46869 KH |
3634 | } while (0) |
3635 | ||
df7492f9 KH |
3636 | |
3637 | #define ENCODE_SHIFT_OUT \ | |
3638 | do { \ | |
3639 | EMIT_ONE_ASCII_BYTE (ISO_CODE_SO); \ | |
3640 | CODING_ISO_INVOCATION (coding, 0) = 1; \ | |
4ed46869 KH |
3641 | } while (0) |
3642 | ||
df7492f9 KH |
3643 | |
3644 | #define ENCODE_LOCKING_SHIFT_2 \ | |
3645 | do { \ | |
3646 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'n'); \ | |
3647 | CODING_ISO_INVOCATION (coding, 0) = 2; \ | |
4ed46869 KH |
3648 | } while (0) |
3649 | ||
df7492f9 KH |
3650 | |
3651 | #define ENCODE_LOCKING_SHIFT_3 \ | |
3652 | do { \ | |
3653 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, 'n'); \ | |
3654 | CODING_ISO_INVOCATION (coding, 0) = 3; \ | |
4ed46869 KH |
3655 | } while (0) |
3656 | ||
df7492f9 | 3657 | |
f4dee582 RS |
3658 | /* Produce codes for a DIMENSION1 character whose character set is |
3659 | CHARSET and whose position-code is C1. Designation and invocation | |
4ed46869 KH |
3660 | sequences are also produced in advance if necessary. */ |
3661 | ||
6e85d753 KH |
3662 | #define ENCODE_ISO_CHARACTER_DIMENSION1(charset, c1) \ |
3663 | do { \ | |
df7492f9 | 3664 | int id = CHARSET_ID (charset); \ |
bf16eb23 KH |
3665 | \ |
3666 | if ((CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_ROMAN) \ | |
3667 | && id == charset_ascii) \ | |
3668 | { \ | |
3669 | id = charset_jisx0201_roman; \ | |
3670 | charset = CHARSET_FROM_ID (id); \ | |
3671 | } \ | |
3672 | \ | |
df7492f9 | 3673 | if (CODING_ISO_SINGLE_SHIFTING (coding)) \ |
6e85d753 | 3674 | { \ |
df7492f9 KH |
3675 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ |
3676 | EMIT_ONE_ASCII_BYTE (c1 & 0x7F); \ | |
6e85d753 | 3677 | else \ |
df7492f9 KH |
3678 | EMIT_ONE_BYTE (c1 | 0x80); \ |
3679 | CODING_ISO_SINGLE_SHIFTING (coding) = 0; \ | |
6e85d753 KH |
3680 | break; \ |
3681 | } \ | |
df7492f9 | 3682 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 0)) \ |
6e85d753 | 3683 | { \ |
df7492f9 | 3684 | EMIT_ONE_ASCII_BYTE (c1 & 0x7F); \ |
6e85d753 KH |
3685 | break; \ |
3686 | } \ | |
df7492f9 | 3687 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 1)) \ |
6e85d753 | 3688 | { \ |
df7492f9 | 3689 | EMIT_ONE_BYTE (c1 | 0x80); \ |
6e85d753 KH |
3690 | break; \ |
3691 | } \ | |
6e85d753 KH |
3692 | else \ |
3693 | /* Since CHARSET is not yet invoked to any graphic planes, we \ | |
3694 | must invoke it, or, at first, designate it to some graphic \ | |
3695 | register. Then repeat the loop to actually produce the \ | |
3696 | character. */ \ | |
df7492f9 KH |
3697 | dst = encode_invocation_designation (charset, coding, dst, \ |
3698 | &produced_chars); \ | |
4ed46869 KH |
3699 | } while (1) |
3700 | ||
df7492f9 | 3701 | |
f4dee582 RS |
3702 | /* Produce codes for a DIMENSION2 character whose character set is |
3703 | CHARSET and whose position-codes are C1 and C2. Designation and | |
4ed46869 KH |
3704 | invocation codes are also produced in advance if necessary. */ |
3705 | ||
6e85d753 KH |
3706 | #define ENCODE_ISO_CHARACTER_DIMENSION2(charset, c1, c2) \ |
3707 | do { \ | |
df7492f9 | 3708 | int id = CHARSET_ID (charset); \ |
bf16eb23 KH |
3709 | \ |
3710 | if ((CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_USE_OLDJIS) \ | |
3711 | && id == charset_jisx0208) \ | |
3712 | { \ | |
3713 | id = charset_jisx0208_1978; \ | |
3714 | charset = CHARSET_FROM_ID (id); \ | |
3715 | } \ | |
3716 | \ | |
df7492f9 | 3717 | if (CODING_ISO_SINGLE_SHIFTING (coding)) \ |
6e85d753 | 3718 | { \ |
df7492f9 KH |
3719 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SEVEN_BITS) \ |
3720 | EMIT_TWO_ASCII_BYTES ((c1) & 0x7F, (c2) & 0x7F); \ | |
6e85d753 | 3721 | else \ |
df7492f9 KH |
3722 | EMIT_TWO_BYTES ((c1) | 0x80, (c2) | 0x80); \ |
3723 | CODING_ISO_SINGLE_SHIFTING (coding) = 0; \ | |
6e85d753 KH |
3724 | break; \ |
3725 | } \ | |
df7492f9 | 3726 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 0)) \ |
6e85d753 | 3727 | { \ |
df7492f9 | 3728 | EMIT_TWO_ASCII_BYTES ((c1) & 0x7F, (c2) & 0x7F); \ |
6e85d753 KH |
3729 | break; \ |
3730 | } \ | |
df7492f9 | 3731 | else if (id == CODING_ISO_INVOKED_CHARSET (coding, 1)) \ |
6e85d753 | 3732 | { \ |
df7492f9 | 3733 | EMIT_TWO_BYTES ((c1) | 0x80, (c2) | 0x80); \ |
6e85d753 KH |
3734 | break; \ |
3735 | } \ | |
6e85d753 KH |
3736 | else \ |
3737 | /* Since CHARSET is not yet invoked to any graphic planes, we \ | |
3738 | must invoke it, or, at first, designate it to some graphic \ | |
3739 | register. Then repeat the loop to actually produce the \ | |
3740 | character. */ \ | |
df7492f9 KH |
3741 | dst = encode_invocation_designation (charset, coding, dst, \ |
3742 | &produced_chars); \ | |
4ed46869 KH |
3743 | } while (1) |
3744 | ||
05e6f5dc | 3745 | |
df7492f9 KH |
3746 | #define ENCODE_ISO_CHARACTER(charset, c) \ |
3747 | do { \ | |
3748 | int code = ENCODE_CHAR ((charset),(c)); \ | |
3749 | \ | |
3750 | if (CHARSET_DIMENSION (charset) == 1) \ | |
3751 | ENCODE_ISO_CHARACTER_DIMENSION1 ((charset), code); \ | |
3752 | else \ | |
3753 | ENCODE_ISO_CHARACTER_DIMENSION2 ((charset), code >> 8, code & 0xFF); \ | |
84fbb8a0 | 3754 | } while (0) |
bdd9fb48 | 3755 | |
05e6f5dc | 3756 | |
4ed46869 | 3757 | /* Produce designation and invocation codes at a place pointed by DST |
df7492f9 | 3758 | to use CHARSET. The element `spec.iso_2022' of *CODING is updated. |
4ed46869 KH |
3759 | Return new DST. */ |
3760 | ||
3761 | unsigned char * | |
df7492f9 KH |
3762 | encode_invocation_designation (charset, coding, dst, p_nchars) |
3763 | struct charset *charset; | |
4ed46869 KH |
3764 | struct coding_system *coding; |
3765 | unsigned char *dst; | |
df7492f9 | 3766 | int *p_nchars; |
4ed46869 | 3767 | { |
df7492f9 KH |
3768 | int multibytep = coding->dst_multibyte; |
3769 | int produced_chars = *p_nchars; | |
4ed46869 | 3770 | int reg; /* graphic register number */ |
df7492f9 | 3771 | int id = CHARSET_ID (charset); |
4ed46869 KH |
3772 | |
3773 | /* At first, check designations. */ | |
3774 | for (reg = 0; reg < 4; reg++) | |
df7492f9 | 3775 | if (id == CODING_ISO_DESIGNATION (coding, reg)) |
4ed46869 KH |
3776 | break; |
3777 | ||
3778 | if (reg >= 4) | |
3779 | { | |
3780 | /* CHARSET is not yet designated to any graphic registers. */ | |
3781 | /* At first check the requested designation. */ | |
df7492f9 KH |
3782 | reg = CODING_ISO_REQUEST (coding, id); |
3783 | if (reg < 0) | |
1ba9e4ab KH |
3784 | /* Since CHARSET requests no special designation, designate it |
3785 | to graphic register 0. */ | |
4ed46869 KH |
3786 | reg = 0; |
3787 | ||
3788 | ENCODE_DESIGNATION (charset, reg, coding); | |
3789 | } | |
3790 | ||
df7492f9 KH |
3791 | if (CODING_ISO_INVOCATION (coding, 0) != reg |
3792 | && CODING_ISO_INVOCATION (coding, 1) != reg) | |
4ed46869 KH |
3793 | { |
3794 | /* Since the graphic register REG is not invoked to any graphic | |
3795 | planes, invoke it to graphic plane 0. */ | |
3796 | switch (reg) | |
3797 | { | |
3798 | case 0: /* graphic register 0 */ | |
3799 | ENCODE_SHIFT_IN; | |
3800 | break; | |
3801 | ||
3802 | case 1: /* graphic register 1 */ | |
3803 | ENCODE_SHIFT_OUT; | |
3804 | break; | |
3805 | ||
3806 | case 2: /* graphic register 2 */ | |
df7492f9 | 3807 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
4ed46869 KH |
3808 | ENCODE_SINGLE_SHIFT_2; |
3809 | else | |
3810 | ENCODE_LOCKING_SHIFT_2; | |
3811 | break; | |
3812 | ||
3813 | case 3: /* graphic register 3 */ | |
df7492f9 | 3814 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_SINGLE_SHIFT) |
4ed46869 KH |
3815 | ENCODE_SINGLE_SHIFT_3; |
3816 | else | |
3817 | ENCODE_LOCKING_SHIFT_3; | |
3818 | break; | |
3819 | } | |
3820 | } | |
b73bfc1c | 3821 | |
df7492f9 | 3822 | *p_nchars = produced_chars; |
4ed46869 KH |
3823 | return dst; |
3824 | } | |
3825 | ||
df7492f9 KH |
3826 | /* The following three macros produce codes for indicating direction |
3827 | of text. */ | |
3828 | #define ENCODE_CONTROL_SEQUENCE_INTRODUCER \ | |
ec6d2bb8 | 3829 | do { \ |
df7492f9 KH |
3830 | if (CODING_ISO_FLAGS (coding) == CODING_ISO_FLAG_SEVEN_BITS) \ |
3831 | EMIT_TWO_ASCII_BYTES (ISO_CODE_ESC, '['); \ | |
ec6d2bb8 | 3832 | else \ |
df7492f9 | 3833 | EMIT_ONE_BYTE (ISO_CODE_CSI); \ |
ec6d2bb8 KH |
3834 | } while (0) |
3835 | ||
ec6d2bb8 | 3836 | |
df7492f9 KH |
3837 | #define ENCODE_DIRECTION_R2L() \ |
3838 | do { \ | |
3839 | ENCODE_CONTROL_SEQUENCE_INTRODUCER (dst); \ | |
3840 | EMIT_TWO_ASCII_BYTES ('2', ']'); \ | |
ec6d2bb8 KH |
3841 | } while (0) |
3842 | ||
ec6d2bb8 | 3843 | |
df7492f9 | 3844 | #define ENCODE_DIRECTION_L2R() \ |
ec6d2bb8 | 3845 | do { \ |
df7492f9 KH |
3846 | ENCODE_CONTROL_SEQUENCE_INTRODUCER (dst); \ |
3847 | EMIT_TWO_ASCII_BYTES ('0', ']'); \ | |
ec6d2bb8 | 3848 | } while (0) |
4ed46869 | 3849 | |
4ed46869 KH |
3850 | |
3851 | /* Produce codes for designation and invocation to reset the graphic | |
3852 | planes and registers to initial state. */ | |
df7492f9 KH |
3853 | #define ENCODE_RESET_PLANE_AND_REGISTER() \ |
3854 | do { \ | |
3855 | int reg; \ | |
3856 | struct charset *charset; \ | |
3857 | \ | |
3858 | if (CODING_ISO_INVOCATION (coding, 0) != 0) \ | |
3859 | ENCODE_SHIFT_IN; \ | |
3860 | for (reg = 0; reg < 4; reg++) \ | |
3861 | if (CODING_ISO_INITIAL (coding, reg) >= 0 \ | |
3862 | && (CODING_ISO_DESIGNATION (coding, reg) \ | |
3863 | != CODING_ISO_INITIAL (coding, reg))) \ | |
3864 | { \ | |
3865 | charset = CHARSET_FROM_ID (CODING_ISO_INITIAL (coding, reg)); \ | |
3866 | ENCODE_DESIGNATION (charset, reg, coding); \ | |
3867 | } \ | |
4ed46869 KH |
3868 | } while (0) |
3869 | ||
df7492f9 | 3870 | |
bdd9fb48 | 3871 | /* Produce designation sequences of charsets in the line started from |
b73bfc1c | 3872 | SRC to a place pointed by DST, and return updated DST. |
bdd9fb48 KH |
3873 | |
3874 | If the current block ends before any end-of-line, we may fail to | |
d46c5b12 KH |
3875 | find all the necessary designations. */ |
3876 | ||
b73bfc1c | 3877 | static unsigned char * |
df7492f9 | 3878 | encode_designation_at_bol (coding, charbuf, charbuf_end, dst) |
e0e989f6 | 3879 | struct coding_system *coding; |
df7492f9 KH |
3880 | int *charbuf, *charbuf_end; |
3881 | unsigned char *dst; | |
e0e989f6 | 3882 | { |
df7492f9 | 3883 | struct charset *charset; |
bdd9fb48 KH |
3884 | /* Table of charsets to be designated to each graphic register. */ |
3885 | int r[4]; | |
df7492f9 KH |
3886 | int c, found = 0, reg; |
3887 | int produced_chars = 0; | |
3888 | int multibytep = coding->dst_multibyte; | |
3889 | Lisp_Object attrs; | |
3890 | Lisp_Object charset_list; | |
3891 | ||
3892 | attrs = CODING_ID_ATTRS (coding->id); | |
3893 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
3894 | if (EQ (charset_list, Qiso_2022)) | |
3895 | charset_list = Viso_2022_charset_list; | |
bdd9fb48 KH |
3896 | |
3897 | for (reg = 0; reg < 4; reg++) | |
3898 | r[reg] = -1; | |
3899 | ||
b73bfc1c | 3900 | while (found < 4) |
e0e989f6 | 3901 | { |
df7492f9 KH |
3902 | int id; |
3903 | ||
3904 | c = *charbuf++; | |
b73bfc1c KH |
3905 | if (c == '\n') |
3906 | break; | |
df7492f9 KH |
3907 | charset = char_charset (c, charset_list, NULL); |
3908 | id = CHARSET_ID (charset); | |
3909 | reg = CODING_ISO_REQUEST (coding, id); | |
3910 | if (reg >= 0 && r[reg] < 0) | |
bdd9fb48 KH |
3911 | { |
3912 | found++; | |
df7492f9 | 3913 | r[reg] = id; |
bdd9fb48 | 3914 | } |
bdd9fb48 KH |
3915 | } |
3916 | ||
3917 | if (found) | |
3918 | { | |
3919 | for (reg = 0; reg < 4; reg++) | |
3920 | if (r[reg] >= 0 | |
df7492f9 KH |
3921 | && CODING_ISO_DESIGNATION (coding, reg) != r[reg]) |
3922 | ENCODE_DESIGNATION (CHARSET_FROM_ID (r[reg]), reg, coding); | |
e0e989f6 | 3923 | } |
b73bfc1c KH |
3924 | |
3925 | return dst; | |
e0e989f6 KH |
3926 | } |
3927 | ||
4ed46869 KH |
3928 | /* See the above "GENERAL NOTES on `encode_coding_XXX ()' functions". */ |
3929 | ||
df7492f9 KH |
3930 | static int |
3931 | encode_coding_iso_2022 (coding) | |
4ed46869 | 3932 | struct coding_system *coding; |
4ed46869 | 3933 | { |
df7492f9 KH |
3934 | int multibytep = coding->dst_multibyte; |
3935 | int *charbuf = coding->charbuf; | |
3936 | int *charbuf_end = charbuf + coding->charbuf_used; | |
3937 | unsigned char *dst = coding->destination + coding->produced; | |
3938 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
3939 | int safe_room = 16; | |
3940 | int bol_designation | |
3941 | = (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATE_AT_BOL | |
3942 | && CODING_ISO_BOL (coding)); | |
3943 | int produced_chars = 0; | |
3944 | Lisp_Object attrs, eol_type, charset_list; | |
3945 | int ascii_compatible; | |
b73bfc1c | 3946 | int c; |
ff0dacd7 | 3947 | int preferred_charset_id = -1; |
05e6f5dc | 3948 | |
24a73b0a KH |
3949 | CODING_GET_INFO (coding, attrs, charset_list); |
3950 | eol_type = CODING_ID_EOL_TYPE (coding->id); | |
3951 | if (VECTORP (eol_type)) | |
3952 | eol_type = Qunix; | |
3953 | ||
004068e4 | 3954 | setup_iso_safe_charsets (attrs); |
ff0dacd7 | 3955 | /* Charset list may have been changed. */ |
287c57d7 | 3956 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); |
8f924df7 | 3957 | coding->safe_charsets = (char *) SDATA (CODING_ATTR_SAFE_CHARSETS(attrs)); |
0eecad43 | 3958 | |
df7492f9 | 3959 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); |
bdd9fb48 | 3960 | |
df7492f9 | 3961 | while (charbuf < charbuf_end) |
4ed46869 | 3962 | { |
df7492f9 | 3963 | ASSURE_DESTINATION (safe_room); |
b73bfc1c | 3964 | |
df7492f9 | 3965 | if (bol_designation) |
b73bfc1c | 3966 | { |
df7492f9 | 3967 | unsigned char *dst_prev = dst; |
4ed46869 | 3968 | |
bdd9fb48 | 3969 | /* We have to produce designation sequences if any now. */ |
df7492f9 KH |
3970 | dst = encode_designation_at_bol (coding, charbuf, charbuf_end, dst); |
3971 | bol_designation = 0; | |
3972 | /* We are sure that designation sequences are all ASCII bytes. */ | |
3973 | produced_chars += dst - dst_prev; | |
e0e989f6 KH |
3974 | } |
3975 | ||
df7492f9 | 3976 | c = *charbuf++; |
ec6d2bb8 | 3977 | |
ff0dacd7 KH |
3978 | if (c < 0) |
3979 | { | |
3980 | /* Handle an annotation. */ | |
3981 | switch (*charbuf) | |
ec6d2bb8 | 3982 | { |
ff0dacd7 KH |
3983 | case CODING_ANNOTATE_COMPOSITION_MASK: |
3984 | /* Not yet implemented. */ | |
3985 | break; | |
3986 | case CODING_ANNOTATE_CHARSET_MASK: | |
cf7dfdf5 | 3987 | preferred_charset_id = charbuf[2]; |
ff0dacd7 KH |
3988 | if (preferred_charset_id >= 0 |
3989 | && NILP (Fmemq (make_number (preferred_charset_id), | |
3990 | charset_list))) | |
3991 | preferred_charset_id = -1; | |
3992 | break; | |
3993 | default: | |
3994 | abort (); | |
4ed46869 | 3995 | } |
ff0dacd7 KH |
3996 | charbuf += -c - 1; |
3997 | continue; | |
4ed46869 | 3998 | } |
ec6d2bb8 | 3999 | |
b73bfc1c KH |
4000 | /* Now encode the character C. */ |
4001 | if (c < 0x20 || c == 0x7F) | |
4002 | { | |
df7492f9 KH |
4003 | if (c == '\n' |
4004 | || (c == '\r' && EQ (eol_type, Qmac))) | |
19a8d9e0 | 4005 | { |
df7492f9 KH |
4006 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_RESET_AT_EOL) |
4007 | ENCODE_RESET_PLANE_AND_REGISTER (); | |
4008 | if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_INIT_AT_BOL) | |
b73bfc1c | 4009 | { |
df7492f9 KH |
4010 | int i; |
4011 | ||
4012 | for (i = 0; i < 4; i++) | |
4013 | CODING_ISO_DESIGNATION (coding, i) | |
4014 | = CODING_ISO_INITIAL (coding, i); | |
b73bfc1c | 4015 | } |
df7492f9 KH |
4016 | bol_designation |
4017 | = CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_DESIGNATE_AT_BOL; | |
19a8d9e0 | 4018 | } |
df7492f9 KH |
4019 | else if (CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_RESET_AT_CNTL) |
4020 | ENCODE_RESET_PLANE_AND_REGISTER (); | |
4021 | EMIT_ONE_ASCII_BYTE (c); | |
4ed46869 | 4022 | } |
df7492f9 | 4023 | else if (ASCII_CHAR_P (c)) |
88993dfd | 4024 | { |
df7492f9 KH |
4025 | if (ascii_compatible) |
4026 | EMIT_ONE_ASCII_BYTE (c); | |
93dec019 | 4027 | else |
19a8d9e0 | 4028 | { |
bf16eb23 KH |
4029 | struct charset *charset = CHARSET_FROM_ID (charset_ascii); |
4030 | ENCODE_ISO_CHARACTER (charset, c); | |
19a8d9e0 | 4031 | } |
4ed46869 | 4032 | } |
16eafb5d | 4033 | else if (CHAR_BYTE8_P (c)) |
88993dfd | 4034 | { |
16eafb5d KH |
4035 | c = CHAR_TO_BYTE8 (c); |
4036 | EMIT_ONE_BYTE (c); | |
88993dfd | 4037 | } |
b73bfc1c | 4038 | else |
df7492f9 | 4039 | { |
ff0dacd7 | 4040 | struct charset *charset; |
b73bfc1c | 4041 | |
ff0dacd7 KH |
4042 | if (preferred_charset_id >= 0) |
4043 | { | |
4044 | charset = CHARSET_FROM_ID (preferred_charset_id); | |
4045 | if (! CHAR_CHARSET_P (c, charset)) | |
4046 | charset = char_charset (c, charset_list, NULL); | |
4047 | } | |
4048 | else | |
4049 | charset = char_charset (c, charset_list, NULL); | |
df7492f9 KH |
4050 | if (!charset) |
4051 | { | |
41cbe562 KH |
4052 | if (coding->mode & CODING_MODE_SAFE_ENCODING) |
4053 | { | |
4054 | c = CODING_INHIBIT_CHARACTER_SUBSTITUTION; | |
4055 | charset = CHARSET_FROM_ID (charset_ascii); | |
4056 | } | |
4057 | else | |
4058 | { | |
4059 | c = coding->default_char; | |
4060 | charset = char_charset (c, charset_list, NULL); | |
4061 | } | |
df7492f9 KH |
4062 | } |
4063 | ENCODE_ISO_CHARACTER (charset, c); | |
4064 | } | |
84fbb8a0 | 4065 | } |
b73bfc1c | 4066 | |
df7492f9 KH |
4067 | if (coding->mode & CODING_MODE_LAST_BLOCK |
4068 | && CODING_ISO_FLAGS (coding) & CODING_ISO_FLAG_RESET_AT_EOL) | |
4069 | { | |
4070 | ASSURE_DESTINATION (safe_room); | |
4071 | ENCODE_RESET_PLANE_AND_REGISTER (); | |
4072 | } | |
065e3595 | 4073 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4074 | CODING_ISO_BOL (coding) = bol_designation; |
4075 | coding->produced_char += produced_chars; | |
4076 | coding->produced = dst - coding->destination; | |
4077 | return 0; | |
4ed46869 KH |
4078 | } |
4079 | ||
4080 | \f | |
df7492f9 | 4081 | /*** 8,9. SJIS and BIG5 handlers ***/ |
4ed46869 | 4082 | |
df7492f9 | 4083 | /* Although SJIS and BIG5 are not ISO's coding system, they are used |
4ed46869 KH |
4084 | quite widely. So, for the moment, Emacs supports them in the bare |
4085 | C code. But, in the future, they may be supported only by CCL. */ | |
4086 | ||
4087 | /* SJIS is a coding system encoding three character sets: ASCII, right | |
4088 | half of JISX0201-Kana, and JISX0208. An ASCII character is encoded | |
4089 | as is. A character of charset katakana-jisx0201 is encoded by | |
4090 | "position-code + 0x80". A character of charset japanese-jisx0208 | |
4091 | is encoded in 2-byte but two position-codes are divided and shifted | |
df7492f9 | 4092 | so that it fit in the range below. |
4ed46869 KH |
4093 | |
4094 | --- CODE RANGE of SJIS --- | |
4095 | (character set) (range) | |
4096 | ASCII 0x00 .. 0x7F | |
df7492f9 | 4097 | KATAKANA-JISX0201 0xA0 .. 0xDF |
c28a9453 | 4098 | JISX0208 (1st byte) 0x81 .. 0x9F and 0xE0 .. 0xEF |
d14d03ac | 4099 | (2nd byte) 0x40 .. 0x7E and 0x80 .. 0xFC |
4ed46869 KH |
4100 | ------------------------------- |
4101 | ||
4102 | */ | |
4103 | ||
4104 | /* BIG5 is a coding system encoding two character sets: ASCII and | |
4105 | Big5. An ASCII character is encoded as is. Big5 is a two-byte | |
df7492f9 | 4106 | character set and is encoded in two-byte. |
4ed46869 KH |
4107 | |
4108 | --- CODE RANGE of BIG5 --- | |
4109 | (character set) (range) | |
4110 | ASCII 0x00 .. 0x7F | |
4111 | Big5 (1st byte) 0xA1 .. 0xFE | |
4112 | (2nd byte) 0x40 .. 0x7E and 0xA1 .. 0xFE | |
4113 | -------------------------- | |
4114 | ||
df7492f9 | 4115 | */ |
4ed46869 KH |
4116 | |
4117 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
4118 | Check if a text is encoded in SJIS. If it is, return | |
df7492f9 | 4119 | CATEGORY_MASK_SJIS, else return 0. */ |
4ed46869 | 4120 | |
0a28aafb | 4121 | static int |
ff0dacd7 | 4122 | detect_coding_sjis (coding, detect_info) |
df7492f9 | 4123 | struct coding_system *coding; |
ff0dacd7 | 4124 | struct coding_detection_info *detect_info; |
4ed46869 | 4125 | { |
065e3595 | 4126 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 4127 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
4128 | int multibytep = coding->src_multibyte; |
4129 | int consumed_chars = 0; | |
4130 | int found = 0; | |
b73bfc1c | 4131 | int c; |
df7492f9 | 4132 | |
ff0dacd7 | 4133 | detect_info->checked |= CATEGORY_MASK_SJIS; |
df7492f9 KH |
4134 | /* A coding system of this category is always ASCII compatible. */ |
4135 | src += coding->head_ascii; | |
4ed46869 | 4136 | |
b73bfc1c | 4137 | while (1) |
4ed46869 | 4138 | { |
065e3595 | 4139 | src_base = src; |
df7492f9 | 4140 | ONE_MORE_BYTE (c); |
682169fe KH |
4141 | if (c < 0x80) |
4142 | continue; | |
df7492f9 | 4143 | if ((c >= 0x81 && c <= 0x9F) || (c >= 0xE0 && c <= 0xEF)) |
4ed46869 | 4144 | { |
df7492f9 | 4145 | ONE_MORE_BYTE (c); |
682169fe | 4146 | if (c < 0x40 || c == 0x7F || c > 0xFC) |
df7492f9 | 4147 | break; |
ff0dacd7 | 4148 | found = CATEGORY_MASK_SJIS; |
4ed46869 | 4149 | } |
df7492f9 | 4150 | else if (c >= 0xA0 && c < 0xE0) |
ff0dacd7 | 4151 | found = CATEGORY_MASK_SJIS; |
df7492f9 KH |
4152 | else |
4153 | break; | |
4ed46869 | 4154 | } |
ff0dacd7 | 4155 | detect_info->rejected |= CATEGORY_MASK_SJIS; |
df7492f9 KH |
4156 | return 0; |
4157 | ||
4158 | no_more_source: | |
065e3595 | 4159 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
89528eb3 | 4160 | { |
ff0dacd7 | 4161 | detect_info->rejected |= CATEGORY_MASK_SJIS; |
89528eb3 | 4162 | return 0; |
4ed46869 | 4163 | } |
ff0dacd7 KH |
4164 | detect_info->found |= found; |
4165 | return 1; | |
4ed46869 KH |
4166 | } |
4167 | ||
4168 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
4169 | Check if a text is encoded in BIG5. If it is, return | |
df7492f9 | 4170 | CATEGORY_MASK_BIG5, else return 0. */ |
4ed46869 | 4171 | |
0a28aafb | 4172 | static int |
ff0dacd7 | 4173 | detect_coding_big5 (coding, detect_info) |
df7492f9 | 4174 | struct coding_system *coding; |
ff0dacd7 | 4175 | struct coding_detection_info *detect_info; |
4ed46869 | 4176 | { |
065e3595 | 4177 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 4178 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
4179 | int multibytep = coding->src_multibyte; |
4180 | int consumed_chars = 0; | |
4181 | int found = 0; | |
b73bfc1c | 4182 | int c; |
fa42c37f | 4183 | |
ff0dacd7 | 4184 | detect_info->checked |= CATEGORY_MASK_BIG5; |
df7492f9 KH |
4185 | /* A coding system of this category is always ASCII compatible. */ |
4186 | src += coding->head_ascii; | |
fa42c37f | 4187 | |
b73bfc1c | 4188 | while (1) |
fa42c37f | 4189 | { |
065e3595 | 4190 | src_base = src; |
df7492f9 KH |
4191 | ONE_MORE_BYTE (c); |
4192 | if (c < 0x80) | |
fa42c37f | 4193 | continue; |
df7492f9 | 4194 | if (c >= 0xA1) |
fa42c37f | 4195 | { |
df7492f9 KH |
4196 | ONE_MORE_BYTE (c); |
4197 | if (c < 0x40 || (c >= 0x7F && c <= 0xA0)) | |
fa42c37f | 4198 | return 0; |
ff0dacd7 | 4199 | found = CATEGORY_MASK_BIG5; |
fa42c37f | 4200 | } |
df7492f9 KH |
4201 | else |
4202 | break; | |
fa42c37f | 4203 | } |
ff0dacd7 | 4204 | detect_info->rejected |= CATEGORY_MASK_BIG5; |
fa42c37f | 4205 | return 0; |
fa42c37f | 4206 | |
df7492f9 | 4207 | no_more_source: |
065e3595 | 4208 | if (src_base < src && coding->mode & CODING_MODE_LAST_BLOCK) |
89528eb3 | 4209 | { |
ff0dacd7 | 4210 | detect_info->rejected |= CATEGORY_MASK_BIG5; |
89528eb3 KH |
4211 | return 0; |
4212 | } | |
ff0dacd7 KH |
4213 | detect_info->found |= found; |
4214 | return 1; | |
fa42c37f KH |
4215 | } |
4216 | ||
4ed46869 KH |
4217 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". |
4218 | If SJIS_P is 1, decode SJIS text, else decode BIG5 test. */ | |
fa42c37f | 4219 | |
b73bfc1c | 4220 | static void |
df7492f9 | 4221 | decode_coding_sjis (coding) |
4ed46869 | 4222 | struct coding_system *coding; |
4ed46869 | 4223 | { |
8f924df7 KH |
4224 | const unsigned char *src = coding->source + coding->consumed; |
4225 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
4226 | const unsigned char *src_base; | |
69a80ea3 KH |
4227 | int *charbuf = coding->charbuf + coding->charbuf_used; |
4228 | int *charbuf_end | |
4229 | = coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH; | |
df7492f9 KH |
4230 | int consumed_chars = 0, consumed_chars_base; |
4231 | int multibytep = coding->src_multibyte; | |
4232 | struct charset *charset_roman, *charset_kanji, *charset_kana; | |
57a47f8a | 4233 | struct charset *charset_kanji2; |
24a73b0a | 4234 | Lisp_Object attrs, charset_list, val; |
ff0dacd7 KH |
4235 | int char_offset = coding->produced_char; |
4236 | int last_offset = char_offset; | |
4237 | int last_id = charset_ascii; | |
119852e7 KH |
4238 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
4239 | int byte_after_cr = -1; | |
a5d301df | 4240 | |
24a73b0a | 4241 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4242 | |
4243 | val = charset_list; | |
4244 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
89528eb3 | 4245 | charset_kana = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
57a47f8a KH |
4246 | charset_kanji = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
4247 | charset_kanji2 = NILP (val) ? NULL : CHARSET_FROM_ID (XINT (XCAR (val))); | |
fa42c37f | 4248 | |
b73bfc1c | 4249 | while (1) |
4ed46869 | 4250 | { |
df7492f9 | 4251 | int c, c1; |
24a73b0a | 4252 | struct charset *charset; |
fa42c37f | 4253 | |
b73bfc1c | 4254 | src_base = src; |
df7492f9 | 4255 | consumed_chars_base = consumed_chars; |
fa42c37f | 4256 | |
df7492f9 KH |
4257 | if (charbuf >= charbuf_end) |
4258 | break; | |
4259 | ||
119852e7 KH |
4260 | if (byte_after_cr >= 0) |
4261 | c = byte_after_cr, byte_after_cr = -1; | |
4262 | else | |
4263 | ONE_MORE_BYTE (c); | |
065e3595 KH |
4264 | if (c < 0) |
4265 | goto invalid_code; | |
24a73b0a | 4266 | if (c < 0x80) |
119852e7 KH |
4267 | { |
4268 | if (eol_crlf && c == '\r') | |
4269 | ONE_MORE_BYTE (byte_after_cr); | |
4270 | charset = charset_roman; | |
4271 | } | |
57a47f8a | 4272 | else if (c == 0x80 || c == 0xA0) |
8e921c4b | 4273 | goto invalid_code; |
57a47f8a KH |
4274 | else if (c >= 0xA1 && c <= 0xDF) |
4275 | { | |
4276 | /* SJIS -> JISX0201-Kana */ | |
4277 | c &= 0x7F; | |
4278 | charset = charset_kana; | |
4279 | } | |
4280 | else if (c <= 0xEF) | |
df7492f9 | 4281 | { |
57a47f8a KH |
4282 | /* SJIS -> JISX0208 */ |
4283 | ONE_MORE_BYTE (c1); | |
4284 | if (c1 < 0x40 || c1 == 0x7F || c1 > 0xFC) | |
24a73b0a | 4285 | goto invalid_code; |
57a47f8a KH |
4286 | c = (c << 8) | c1; |
4287 | SJIS_TO_JIS (c); | |
4288 | charset = charset_kanji; | |
4289 | } | |
4290 | else if (c <= 0xFC && charset_kanji2) | |
4291 | { | |
c6876370 | 4292 | /* SJIS -> JISX0213-2 */ |
57a47f8a KH |
4293 | ONE_MORE_BYTE (c1); |
4294 | if (c1 < 0x40 || c1 == 0x7F || c1 > 0xFC) | |
24a73b0a | 4295 | goto invalid_code; |
57a47f8a KH |
4296 | c = (c << 8) | c1; |
4297 | SJIS_TO_JIS2 (c); | |
4298 | charset = charset_kanji2; | |
df7492f9 | 4299 | } |
57a47f8a KH |
4300 | else |
4301 | goto invalid_code; | |
24a73b0a KH |
4302 | if (charset->id != charset_ascii |
4303 | && last_id != charset->id) | |
4304 | { | |
4305 | if (last_id != charset_ascii) | |
69a80ea3 | 4306 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
24a73b0a KH |
4307 | last_id = charset->id; |
4308 | last_offset = char_offset; | |
4309 | } | |
4310 | CODING_DECODE_CHAR (coding, src, src_base, src_end, charset, c, c); | |
df7492f9 | 4311 | *charbuf++ = c; |
ff0dacd7 | 4312 | char_offset++; |
df7492f9 | 4313 | continue; |
b73bfc1c | 4314 | |
df7492f9 KH |
4315 | invalid_code: |
4316 | src = src_base; | |
4317 | consumed_chars = consumed_chars_base; | |
4318 | ONE_MORE_BYTE (c); | |
065e3595 | 4319 | *charbuf++ = c < 0 ? -c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 4320 | char_offset++; |
df7492f9 KH |
4321 | coding->errors++; |
4322 | } | |
fa42c37f | 4323 | |
df7492f9 | 4324 | no_more_source: |
ff0dacd7 | 4325 | if (last_id != charset_ascii) |
69a80ea3 | 4326 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
4327 | coding->consumed_char += consumed_chars_base; |
4328 | coding->consumed = src_base - coding->source; | |
4329 | coding->charbuf_used = charbuf - coding->charbuf; | |
fa42c37f KH |
4330 | } |
4331 | ||
b73bfc1c | 4332 | static void |
df7492f9 | 4333 | decode_coding_big5 (coding) |
4ed46869 | 4334 | struct coding_system *coding; |
4ed46869 | 4335 | { |
8f924df7 KH |
4336 | const unsigned char *src = coding->source + coding->consumed; |
4337 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
4338 | const unsigned char *src_base; | |
69a80ea3 KH |
4339 | int *charbuf = coding->charbuf + coding->charbuf_used; |
4340 | int *charbuf_end | |
4341 | = coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH; | |
df7492f9 KH |
4342 | int consumed_chars = 0, consumed_chars_base; |
4343 | int multibytep = coding->src_multibyte; | |
4344 | struct charset *charset_roman, *charset_big5; | |
24a73b0a | 4345 | Lisp_Object attrs, charset_list, val; |
ff0dacd7 KH |
4346 | int char_offset = coding->produced_char; |
4347 | int last_offset = char_offset; | |
4348 | int last_id = charset_ascii; | |
119852e7 KH |
4349 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
4350 | int byte_after_cr = -1; | |
df7492f9 | 4351 | |
24a73b0a | 4352 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4353 | val = charset_list; |
4354 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
4355 | charset_big5 = CHARSET_FROM_ID (XINT (XCAR (val))); | |
4ed46869 | 4356 | |
b73bfc1c | 4357 | while (1) |
4ed46869 | 4358 | { |
df7492f9 | 4359 | int c, c1; |
24a73b0a | 4360 | struct charset *charset; |
b73bfc1c KH |
4361 | |
4362 | src_base = src; | |
df7492f9 KH |
4363 | consumed_chars_base = consumed_chars; |
4364 | ||
4365 | if (charbuf >= charbuf_end) | |
4366 | break; | |
4367 | ||
119852e7 | 4368 | if (byte_after_cr >= 0) |
14daee73 | 4369 | c = byte_after_cr, byte_after_cr = -1; |
119852e7 KH |
4370 | else |
4371 | ONE_MORE_BYTE (c); | |
b73bfc1c | 4372 | |
065e3595 KH |
4373 | if (c < 0) |
4374 | goto invalid_code; | |
24a73b0a | 4375 | if (c < 0x80) |
119852e7 | 4376 | { |
14daee73 | 4377 | if (eol_crlf && c == '\r') |
119852e7 KH |
4378 | ONE_MORE_BYTE (byte_after_cr); |
4379 | charset = charset_roman; | |
4380 | } | |
24a73b0a | 4381 | else |
4ed46869 | 4382 | { |
24a73b0a KH |
4383 | /* BIG5 -> Big5 */ |
4384 | if (c < 0xA1 || c > 0xFE) | |
4385 | goto invalid_code; | |
4386 | ONE_MORE_BYTE (c1); | |
4387 | if (c1 < 0x40 || (c1 > 0x7E && c1 < 0xA1) || c1 > 0xFE) | |
4388 | goto invalid_code; | |
4389 | c = c << 8 | c1; | |
4390 | charset = charset_big5; | |
4ed46869 | 4391 | } |
24a73b0a KH |
4392 | if (charset->id != charset_ascii |
4393 | && last_id != charset->id) | |
df7492f9 | 4394 | { |
24a73b0a | 4395 | if (last_id != charset_ascii) |
69a80ea3 | 4396 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
24a73b0a KH |
4397 | last_id = charset->id; |
4398 | last_offset = char_offset; | |
4ed46869 | 4399 | } |
24a73b0a | 4400 | CODING_DECODE_CHAR (coding, src, src_base, src_end, charset, c, c); |
df7492f9 | 4401 | *charbuf++ = c; |
ff0dacd7 | 4402 | char_offset++; |
fb88bf2d KH |
4403 | continue; |
4404 | ||
df7492f9 | 4405 | invalid_code: |
4ed46869 | 4406 | src = src_base; |
df7492f9 KH |
4407 | consumed_chars = consumed_chars_base; |
4408 | ONE_MORE_BYTE (c); | |
065e3595 | 4409 | *charbuf++ = c < 0 ? -c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 4410 | char_offset++; |
df7492f9 | 4411 | coding->errors++; |
fb88bf2d | 4412 | } |
d46c5b12 | 4413 | |
df7492f9 | 4414 | no_more_source: |
ff0dacd7 | 4415 | if (last_id != charset_ascii) |
69a80ea3 | 4416 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
4417 | coding->consumed_char += consumed_chars_base; |
4418 | coding->consumed = src_base - coding->source; | |
4419 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
4420 | } |
4421 | ||
4422 | /* See the above "GENERAL NOTES on `encode_coding_XXX ()' functions". | |
b73bfc1c KH |
4423 | This function can encode charsets `ascii', `katakana-jisx0201', |
4424 | `japanese-jisx0208', `chinese-big5-1', and `chinese-big5-2'. We | |
4425 | are sure that all these charsets are registered as official charset | |
4ed46869 KH |
4426 | (i.e. do not have extended leading-codes). Characters of other |
4427 | charsets are produced without any encoding. If SJIS_P is 1, encode | |
4428 | SJIS text, else encode BIG5 text. */ | |
4429 | ||
df7492f9 KH |
4430 | static int |
4431 | encode_coding_sjis (coding) | |
4ed46869 | 4432 | struct coding_system *coding; |
4ed46869 | 4433 | { |
df7492f9 KH |
4434 | int multibytep = coding->dst_multibyte; |
4435 | int *charbuf = coding->charbuf; | |
4436 | int *charbuf_end = charbuf + coding->charbuf_used; | |
4437 | unsigned char *dst = coding->destination + coding->produced; | |
4438 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
4439 | int safe_room = 4; | |
4440 | int produced_chars = 0; | |
24a73b0a | 4441 | Lisp_Object attrs, charset_list, val; |
df7492f9 KH |
4442 | int ascii_compatible; |
4443 | struct charset *charset_roman, *charset_kanji, *charset_kana; | |
57a47f8a | 4444 | struct charset *charset_kanji2; |
df7492f9 | 4445 | int c; |
a5d301df | 4446 | |
24a73b0a | 4447 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4448 | val = charset_list; |
4449 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
4450 | charset_kana = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
57a47f8a KH |
4451 | charset_kanji = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
4452 | charset_kanji2 = NILP (val) ? NULL : CHARSET_FROM_ID (XINT (XCAR (val))); | |
4ed46869 | 4453 | |
df7492f9 | 4454 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); |
93dec019 | 4455 | |
df7492f9 KH |
4456 | while (charbuf < charbuf_end) |
4457 | { | |
4458 | ASSURE_DESTINATION (safe_room); | |
4459 | c = *charbuf++; | |
b73bfc1c | 4460 | /* Now encode the character C. */ |
df7492f9 KH |
4461 | if (ASCII_CHAR_P (c) && ascii_compatible) |
4462 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d KH |
4463 | else if (CHAR_BYTE8_P (c)) |
4464 | { | |
4465 | c = CHAR_TO_BYTE8 (c); | |
4466 | EMIT_ONE_BYTE (c); | |
4467 | } | |
df7492f9 | 4468 | else |
b73bfc1c | 4469 | { |
df7492f9 KH |
4470 | unsigned code; |
4471 | struct charset *charset = char_charset (c, charset_list, &code); | |
4472 | ||
4473 | if (!charset) | |
4ed46869 | 4474 | { |
41cbe562 | 4475 | if (coding->mode & CODING_MODE_SAFE_ENCODING) |
b73bfc1c | 4476 | { |
41cbe562 KH |
4477 | code = CODING_INHIBIT_CHARACTER_SUBSTITUTION; |
4478 | charset = CHARSET_FROM_ID (charset_ascii); | |
b73bfc1c | 4479 | } |
41cbe562 | 4480 | else |
b73bfc1c | 4481 | { |
41cbe562 KH |
4482 | c = coding->default_char; |
4483 | charset = char_charset (c, charset_list, &code); | |
b73bfc1c | 4484 | } |
b73bfc1c | 4485 | } |
df7492f9 KH |
4486 | if (code == CHARSET_INVALID_CODE (charset)) |
4487 | abort (); | |
4488 | if (charset == charset_kanji) | |
4489 | { | |
4490 | int c1, c2; | |
4491 | JIS_TO_SJIS (code); | |
4492 | c1 = code >> 8, c2 = code & 0xFF; | |
4493 | EMIT_TWO_BYTES (c1, c2); | |
4494 | } | |
4495 | else if (charset == charset_kana) | |
4496 | EMIT_ONE_BYTE (code | 0x80); | |
57a47f8a KH |
4497 | else if (charset_kanji2 && charset == charset_kanji2) |
4498 | { | |
4499 | int c1, c2; | |
4500 | ||
4501 | c1 = code >> 8; | |
4502 | if (c1 == 0x21 || (c1 >= 0x23 && c1 < 0x25) | |
4503 | || (c1 >= 0x2C && c1 <= 0x2F) || c1 >= 0x6E) | |
4504 | { | |
4505 | JIS_TO_SJIS2 (code); | |
4506 | c1 = code >> 8, c2 = code & 0xFF; | |
4507 | EMIT_TWO_BYTES (c1, c2); | |
4508 | } | |
4509 | else | |
4510 | EMIT_ONE_ASCII_BYTE (code & 0x7F); | |
4511 | } | |
df7492f9 KH |
4512 | else |
4513 | EMIT_ONE_ASCII_BYTE (code & 0x7F); | |
4514 | } | |
4515 | } | |
065e3595 | 4516 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4517 | coding->produced_char += produced_chars; |
4518 | coding->produced = dst - coding->destination; | |
4519 | return 0; | |
4520 | } | |
4521 | ||
4522 | static int | |
4523 | encode_coding_big5 (coding) | |
4524 | struct coding_system *coding; | |
4525 | { | |
4526 | int multibytep = coding->dst_multibyte; | |
4527 | int *charbuf = coding->charbuf; | |
4528 | int *charbuf_end = charbuf + coding->charbuf_used; | |
4529 | unsigned char *dst = coding->destination + coding->produced; | |
4530 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
4531 | int safe_room = 4; | |
4532 | int produced_chars = 0; | |
24a73b0a | 4533 | Lisp_Object attrs, charset_list, val; |
df7492f9 KH |
4534 | int ascii_compatible; |
4535 | struct charset *charset_roman, *charset_big5; | |
4536 | int c; | |
4537 | ||
24a73b0a | 4538 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4539 | val = charset_list; |
4540 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
4541 | charset_big5 = CHARSET_FROM_ID (XINT (XCAR (val))); | |
4542 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); | |
4543 | ||
4544 | while (charbuf < charbuf_end) | |
4545 | { | |
4546 | ASSURE_DESTINATION (safe_room); | |
4547 | c = *charbuf++; | |
4548 | /* Now encode the character C. */ | |
4549 | if (ASCII_CHAR_P (c) && ascii_compatible) | |
4550 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d KH |
4551 | else if (CHAR_BYTE8_P (c)) |
4552 | { | |
4553 | c = CHAR_TO_BYTE8 (c); | |
4554 | EMIT_ONE_BYTE (c); | |
b73bfc1c KH |
4555 | } |
4556 | else | |
4557 | { | |
df7492f9 KH |
4558 | unsigned code; |
4559 | struct charset *charset = char_charset (c, charset_list, &code); | |
4560 | ||
4561 | if (! charset) | |
b73bfc1c | 4562 | { |
41cbe562 | 4563 | if (coding->mode & CODING_MODE_SAFE_ENCODING) |
b73bfc1c | 4564 | { |
41cbe562 KH |
4565 | code = CODING_INHIBIT_CHARACTER_SUBSTITUTION; |
4566 | charset = CHARSET_FROM_ID (charset_ascii); | |
b73bfc1c | 4567 | } |
41cbe562 | 4568 | else |
0eecad43 | 4569 | { |
41cbe562 KH |
4570 | c = coding->default_char; |
4571 | charset = char_charset (c, charset_list, &code); | |
0eecad43 | 4572 | } |
4ed46869 | 4573 | } |
df7492f9 KH |
4574 | if (code == CHARSET_INVALID_CODE (charset)) |
4575 | abort (); | |
4576 | if (charset == charset_big5) | |
b73bfc1c | 4577 | { |
df7492f9 KH |
4578 | int c1, c2; |
4579 | ||
4580 | c1 = code >> 8, c2 = code & 0xFF; | |
4581 | EMIT_TWO_BYTES (c1, c2); | |
b73bfc1c | 4582 | } |
df7492f9 KH |
4583 | else |
4584 | EMIT_ONE_ASCII_BYTE (code & 0x7F); | |
4ed46869 | 4585 | } |
4ed46869 | 4586 | } |
065e3595 | 4587 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4588 | coding->produced_char += produced_chars; |
4589 | coding->produced = dst - coding->destination; | |
4590 | return 0; | |
4ed46869 KH |
4591 | } |
4592 | ||
4593 | \f | |
df7492f9 | 4594 | /*** 10. CCL handlers ***/ |
1397dc18 KH |
4595 | |
4596 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". | |
4597 | Check if a text is encoded in a coding system of which | |
4598 | encoder/decoder are written in CCL program. If it is, return | |
df7492f9 | 4599 | CATEGORY_MASK_CCL, else return 0. */ |
1397dc18 | 4600 | |
0a28aafb | 4601 | static int |
ff0dacd7 | 4602 | detect_coding_ccl (coding, detect_info) |
df7492f9 | 4603 | struct coding_system *coding; |
ff0dacd7 | 4604 | struct coding_detection_info *detect_info; |
1397dc18 | 4605 | { |
065e3595 | 4606 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 4607 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
4608 | int multibytep = coding->src_multibyte; |
4609 | int consumed_chars = 0; | |
4610 | int found = 0; | |
0e219d54 | 4611 | unsigned char *valids; |
df7492f9 KH |
4612 | int head_ascii = coding->head_ascii; |
4613 | Lisp_Object attrs; | |
4614 | ||
ff0dacd7 KH |
4615 | detect_info->checked |= CATEGORY_MASK_CCL; |
4616 | ||
df7492f9 | 4617 | coding = &coding_categories[coding_category_ccl]; |
0e219d54 | 4618 | valids = CODING_CCL_VALIDS (coding); |
df7492f9 KH |
4619 | attrs = CODING_ID_ATTRS (coding->id); |
4620 | if (! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
4621 | src += head_ascii; | |
1397dc18 | 4622 | |
b73bfc1c | 4623 | while (1) |
1397dc18 | 4624 | { |
df7492f9 | 4625 | int c; |
065e3595 KH |
4626 | |
4627 | src_base = src; | |
df7492f9 | 4628 | ONE_MORE_BYTE (c); |
065e3595 | 4629 | if (c < 0 || ! valids[c]) |
df7492f9 | 4630 | break; |
ff0dacd7 KH |
4631 | if ((valids[c] > 1)) |
4632 | found = CATEGORY_MASK_CCL; | |
df7492f9 | 4633 | } |
ff0dacd7 | 4634 | detect_info->rejected |= CATEGORY_MASK_CCL; |
df7492f9 KH |
4635 | return 0; |
4636 | ||
4637 | no_more_source: | |
ff0dacd7 KH |
4638 | detect_info->found |= found; |
4639 | return 1; | |
df7492f9 KH |
4640 | } |
4641 | ||
4642 | static void | |
4643 | decode_coding_ccl (coding) | |
4644 | struct coding_system *coding; | |
4645 | { | |
7c78e542 | 4646 | const unsigned char *src = coding->source + coding->consumed; |
8f924df7 | 4647 | const unsigned char *src_end = coding->source + coding->src_bytes; |
69a80ea3 KH |
4648 | int *charbuf = coding->charbuf + coding->charbuf_used; |
4649 | int *charbuf_end = coding->charbuf + coding->charbuf_size; | |
df7492f9 KH |
4650 | int consumed_chars = 0; |
4651 | int multibytep = coding->src_multibyte; | |
4652 | struct ccl_program ccl; | |
4653 | int source_charbuf[1024]; | |
4654 | int source_byteidx[1024]; | |
24a73b0a | 4655 | Lisp_Object attrs, charset_list; |
df7492f9 | 4656 | |
24a73b0a | 4657 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4658 | setup_ccl_program (&ccl, CODING_CCL_DECODER (coding)); |
4659 | ||
4660 | while (src < src_end) | |
4661 | { | |
7c78e542 | 4662 | const unsigned char *p = src; |
df7492f9 KH |
4663 | int *source, *source_end; |
4664 | int i = 0; | |
4665 | ||
4666 | if (multibytep) | |
4667 | while (i < 1024 && p < src_end) | |
4668 | { | |
4669 | source_byteidx[i] = p - src; | |
4670 | source_charbuf[i++] = STRING_CHAR_ADVANCE (p); | |
4671 | } | |
4672 | else | |
4673 | while (i < 1024 && p < src_end) | |
4674 | source_charbuf[i++] = *p++; | |
8f924df7 | 4675 | |
df7492f9 KH |
4676 | if (p == src_end && coding->mode & CODING_MODE_LAST_BLOCK) |
4677 | ccl.last_block = 1; | |
4678 | ||
4679 | source = source_charbuf; | |
4680 | source_end = source + i; | |
4681 | while (source < source_end) | |
4682 | { | |
4683 | ccl_driver (&ccl, source, charbuf, | |
8dcbea82 KH |
4684 | source_end - source, charbuf_end - charbuf, |
4685 | charset_list); | |
df7492f9 KH |
4686 | source += ccl.consumed; |
4687 | charbuf += ccl.produced; | |
4688 | if (ccl.status != CCL_STAT_SUSPEND_BY_DST) | |
4689 | break; | |
4690 | } | |
4691 | if (source < source_end) | |
4692 | src += source_byteidx[source - source_charbuf]; | |
4693 | else | |
4694 | src = p; | |
4695 | consumed_chars += source - source_charbuf; | |
4696 | ||
4697 | if (ccl.status != CCL_STAT_SUSPEND_BY_SRC | |
4698 | && ccl.status != CODING_RESULT_INSUFFICIENT_SRC) | |
4699 | break; | |
4700 | } | |
4701 | ||
4702 | switch (ccl.status) | |
4703 | { | |
4704 | case CCL_STAT_SUSPEND_BY_SRC: | |
065e3595 | 4705 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_SRC); |
df7492f9 KH |
4706 | break; |
4707 | case CCL_STAT_SUSPEND_BY_DST: | |
4708 | break; | |
4709 | case CCL_STAT_QUIT: | |
4710 | case CCL_STAT_INVALID_CMD: | |
065e3595 | 4711 | record_conversion_result (coding, CODING_RESULT_INTERRUPT); |
df7492f9 KH |
4712 | break; |
4713 | default: | |
065e3595 | 4714 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4715 | break; |
4716 | } | |
4717 | coding->consumed_char += consumed_chars; | |
4718 | coding->consumed = src - coding->source; | |
4719 | coding->charbuf_used = charbuf - coding->charbuf; | |
4720 | } | |
4721 | ||
4722 | static int | |
4723 | encode_coding_ccl (coding) | |
4724 | struct coding_system *coding; | |
4725 | { | |
4726 | struct ccl_program ccl; | |
4727 | int multibytep = coding->dst_multibyte; | |
4728 | int *charbuf = coding->charbuf; | |
4729 | int *charbuf_end = charbuf + coding->charbuf_used; | |
4730 | unsigned char *dst = coding->destination + coding->produced; | |
4731 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
df7492f9 KH |
4732 | int destination_charbuf[1024]; |
4733 | int i, produced_chars = 0; | |
24a73b0a | 4734 | Lisp_Object attrs, charset_list; |
df7492f9 | 4735 | |
24a73b0a | 4736 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 KH |
4737 | setup_ccl_program (&ccl, CODING_CCL_ENCODER (coding)); |
4738 | ||
4739 | ccl.last_block = coding->mode & CODING_MODE_LAST_BLOCK; | |
4740 | ccl.dst_multibyte = coding->dst_multibyte; | |
4741 | ||
8cffd3e7 | 4742 | while (charbuf < charbuf_end) |
df7492f9 | 4743 | { |
df7492f9 | 4744 | ccl_driver (&ccl, charbuf, destination_charbuf, |
8cffd3e7 | 4745 | charbuf_end - charbuf, 1024, charset_list); |
df7492f9 | 4746 | if (multibytep) |
8cffd3e7 KH |
4747 | { |
4748 | ASSURE_DESTINATION (ccl.produced * 2); | |
4749 | for (i = 0; i < ccl.produced; i++) | |
4750 | EMIT_ONE_BYTE (destination_charbuf[i] & 0xFF); | |
4751 | } | |
df7492f9 KH |
4752 | else |
4753 | { | |
8cffd3e7 | 4754 | ASSURE_DESTINATION (ccl.produced); |
df7492f9 KH |
4755 | for (i = 0; i < ccl.produced; i++) |
4756 | *dst++ = destination_charbuf[i] & 0xFF; | |
4757 | produced_chars += ccl.produced; | |
4758 | } | |
8cffd3e7 KH |
4759 | charbuf += ccl.consumed; |
4760 | if (ccl.status == CCL_STAT_QUIT | |
4761 | || ccl.status == CCL_STAT_INVALID_CMD) | |
4762 | break; | |
df7492f9 KH |
4763 | } |
4764 | ||
4765 | switch (ccl.status) | |
4766 | { | |
4767 | case CCL_STAT_SUSPEND_BY_SRC: | |
065e3595 | 4768 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_SRC); |
df7492f9 KH |
4769 | break; |
4770 | case CCL_STAT_SUSPEND_BY_DST: | |
065e3595 | 4771 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_DST); |
df7492f9 KH |
4772 | break; |
4773 | case CCL_STAT_QUIT: | |
4774 | case CCL_STAT_INVALID_CMD: | |
065e3595 | 4775 | record_conversion_result (coding, CODING_RESULT_INTERRUPT); |
df7492f9 KH |
4776 | break; |
4777 | default: | |
065e3595 | 4778 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 | 4779 | break; |
1397dc18 | 4780 | } |
df7492f9 KH |
4781 | |
4782 | coding->produced_char += produced_chars; | |
4783 | coding->produced = dst - coding->destination; | |
4784 | return 0; | |
1397dc18 KH |
4785 | } |
4786 | ||
df7492f9 | 4787 | |
1397dc18 | 4788 | \f |
df7492f9 | 4789 | /*** 10, 11. no-conversion handlers ***/ |
4ed46869 | 4790 | |
b73bfc1c | 4791 | /* See the above "GENERAL NOTES on `decode_coding_XXX ()' functions". */ |
4ed46869 | 4792 | |
b73bfc1c | 4793 | static void |
df7492f9 | 4794 | decode_coding_raw_text (coding) |
4ed46869 | 4795 | struct coding_system *coding; |
4ed46869 | 4796 | { |
119852e7 KH |
4797 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
4798 | ||
df7492f9 | 4799 | coding->chars_at_source = 1; |
119852e7 KH |
4800 | coding->consumed_char = coding->src_chars; |
4801 | coding->consumed = coding->src_bytes; | |
4802 | if (eol_crlf && coding->source[coding->src_bytes - 1] == '\r') | |
4803 | { | |
4804 | coding->consumed_char--; | |
4805 | coding->consumed--; | |
4806 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_SRC); | |
4807 | } | |
4808 | else | |
4809 | record_conversion_result (coding, CODING_RESULT_SUCCESS); | |
df7492f9 | 4810 | } |
4ed46869 | 4811 | |
df7492f9 KH |
4812 | static int |
4813 | encode_coding_raw_text (coding) | |
4814 | struct coding_system *coding; | |
4815 | { | |
4816 | int multibytep = coding->dst_multibyte; | |
4817 | int *charbuf = coding->charbuf; | |
4818 | int *charbuf_end = coding->charbuf + coding->charbuf_used; | |
4819 | unsigned char *dst = coding->destination + coding->produced; | |
4820 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
4821 | int produced_chars = 0; | |
b73bfc1c KH |
4822 | int c; |
4823 | ||
df7492f9 | 4824 | if (multibytep) |
b73bfc1c | 4825 | { |
df7492f9 | 4826 | int safe_room = MAX_MULTIBYTE_LENGTH * 2; |
4ed46869 | 4827 | |
df7492f9 KH |
4828 | if (coding->src_multibyte) |
4829 | while (charbuf < charbuf_end) | |
4830 | { | |
4831 | ASSURE_DESTINATION (safe_room); | |
4832 | c = *charbuf++; | |
4833 | if (ASCII_CHAR_P (c)) | |
4834 | EMIT_ONE_ASCII_BYTE (c); | |
4835 | else if (CHAR_BYTE8_P (c)) | |
4836 | { | |
4837 | c = CHAR_TO_BYTE8 (c); | |
4838 | EMIT_ONE_BYTE (c); | |
4839 | } | |
4840 | else | |
4841 | { | |
4842 | unsigned char str[MAX_MULTIBYTE_LENGTH], *p0 = str, *p1 = str; | |
93dec019 | 4843 | |
df7492f9 KH |
4844 | CHAR_STRING_ADVANCE (c, p1); |
4845 | while (p0 < p1) | |
9d123124 KH |
4846 | { |
4847 | EMIT_ONE_BYTE (*p0); | |
4848 | p0++; | |
4849 | } | |
df7492f9 KH |
4850 | } |
4851 | } | |
b73bfc1c | 4852 | else |
df7492f9 KH |
4853 | while (charbuf < charbuf_end) |
4854 | { | |
4855 | ASSURE_DESTINATION (safe_room); | |
4856 | c = *charbuf++; | |
4857 | EMIT_ONE_BYTE (c); | |
4858 | } | |
4859 | } | |
4860 | else | |
4ed46869 | 4861 | { |
df7492f9 | 4862 | if (coding->src_multibyte) |
d46c5b12 | 4863 | { |
df7492f9 KH |
4864 | int safe_room = MAX_MULTIBYTE_LENGTH; |
4865 | ||
4866 | while (charbuf < charbuf_end) | |
d46c5b12 | 4867 | { |
df7492f9 KH |
4868 | ASSURE_DESTINATION (safe_room); |
4869 | c = *charbuf++; | |
4870 | if (ASCII_CHAR_P (c)) | |
4871 | *dst++ = c; | |
4872 | else if (CHAR_BYTE8_P (c)) | |
4873 | *dst++ = CHAR_TO_BYTE8 (c); | |
b73bfc1c | 4874 | else |
df7492f9 KH |
4875 | CHAR_STRING_ADVANCE (c, dst); |
4876 | produced_chars++; | |
d46c5b12 KH |
4877 | } |
4878 | } | |
df7492f9 KH |
4879 | else |
4880 | { | |
4881 | ASSURE_DESTINATION (charbuf_end - charbuf); | |
4882 | while (charbuf < charbuf_end && dst < dst_end) | |
4883 | *dst++ = *charbuf++; | |
4884 | produced_chars = dst - (coding->destination + coding->dst_bytes); | |
8f924df7 | 4885 | } |
4ed46869 | 4886 | } |
065e3595 | 4887 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
4888 | coding->produced_char += produced_chars; |
4889 | coding->produced = dst - coding->destination; | |
4890 | return 0; | |
4ed46869 KH |
4891 | } |
4892 | ||
ff0dacd7 KH |
4893 | /* See the above "GENERAL NOTES on `detect_coding_XXX ()' functions". |
4894 | Check if a text is encoded in a charset-based coding system. If it | |
4895 | is, return 1, else return 0. */ | |
4896 | ||
0a28aafb | 4897 | static int |
ff0dacd7 | 4898 | detect_coding_charset (coding, detect_info) |
df7492f9 | 4899 | struct coding_system *coding; |
ff0dacd7 | 4900 | struct coding_detection_info *detect_info; |
1397dc18 | 4901 | { |
065e3595 | 4902 | const unsigned char *src = coding->source, *src_base; |
8f924df7 | 4903 | const unsigned char *src_end = coding->source + coding->src_bytes; |
df7492f9 KH |
4904 | int multibytep = coding->src_multibyte; |
4905 | int consumed_chars = 0; | |
4906 | Lisp_Object attrs, valids; | |
584948ac | 4907 | int found = 0; |
716b3fa0 | 4908 | int head_ascii = coding->head_ascii; |
1397dc18 | 4909 | |
ff0dacd7 KH |
4910 | detect_info->checked |= CATEGORY_MASK_CHARSET; |
4911 | ||
df7492f9 KH |
4912 | coding = &coding_categories[coding_category_charset]; |
4913 | attrs = CODING_ID_ATTRS (coding->id); | |
4914 | valids = AREF (attrs, coding_attr_charset_valids); | |
4915 | ||
4916 | if (! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
716b3fa0 | 4917 | src += head_ascii; |
1397dc18 | 4918 | |
b73bfc1c | 4919 | while (1) |
1397dc18 | 4920 | { |
df7492f9 | 4921 | int c; |
716b3fa0 KH |
4922 | Lisp_Object val; |
4923 | struct charset *charset; | |
4924 | int dim, idx; | |
1397dc18 | 4925 | |
065e3595 | 4926 | src_base = src; |
df7492f9 | 4927 | ONE_MORE_BYTE (c); |
065e3595 KH |
4928 | if (c < 0) |
4929 | continue; | |
716b3fa0 KH |
4930 | val = AREF (valids, c); |
4931 | if (NILP (val)) | |
df7492f9 | 4932 | break; |
584948ac | 4933 | if (c >= 0x80) |
ff0dacd7 | 4934 | found = CATEGORY_MASK_CHARSET; |
716b3fa0 KH |
4935 | if (INTEGERP (val)) |
4936 | { | |
4937 | charset = CHARSET_FROM_ID (XFASTINT (val)); | |
4938 | dim = CHARSET_DIMENSION (charset); | |
4939 | for (idx = 1; idx < dim; idx++) | |
4940 | { | |
4941 | if (src == src_end) | |
4942 | goto too_short; | |
4943 | ONE_MORE_BYTE (c); | |
4944 | if (c < charset->code_space[(dim - 1 - idx) * 2] | |
4945 | || c > charset->code_space[(dim - 1 - idx) * 2 + 1]) | |
4946 | break; | |
4947 | } | |
4948 | if (idx < dim) | |
4949 | break; | |
4950 | } | |
4951 | else | |
4952 | { | |
4953 | idx = 1; | |
4954 | for (; CONSP (val); val = XCDR (val)) | |
4955 | { | |
4956 | charset = CHARSET_FROM_ID (XFASTINT (XCAR (val))); | |
4957 | dim = CHARSET_DIMENSION (charset); | |
4958 | while (idx < dim) | |
4959 | { | |
4960 | if (src == src_end) | |
4961 | goto too_short; | |
4962 | ONE_MORE_BYTE (c); | |
4963 | if (c < charset->code_space[(dim - 1 - idx) * 4] | |
4964 | || c > charset->code_space[(dim - 1 - idx) * 4 + 1]) | |
4965 | break; | |
4966 | idx++; | |
4967 | } | |
4968 | if (idx == dim) | |
4969 | { | |
4970 | val = Qnil; | |
4971 | break; | |
4972 | } | |
4973 | } | |
4974 | if (CONSP (val)) | |
4975 | break; | |
4976 | } | |
df7492f9 | 4977 | } |
716b3fa0 | 4978 | too_short: |
ff0dacd7 | 4979 | detect_info->rejected |= CATEGORY_MASK_CHARSET; |
df7492f9 | 4980 | return 0; |
4ed46869 | 4981 | |
df7492f9 | 4982 | no_more_source: |
ff0dacd7 KH |
4983 | detect_info->found |= found; |
4984 | return 1; | |
df7492f9 | 4985 | } |
b73bfc1c | 4986 | |
b73bfc1c | 4987 | static void |
df7492f9 | 4988 | decode_coding_charset (coding) |
4ed46869 | 4989 | struct coding_system *coding; |
4ed46869 | 4990 | { |
8f924df7 KH |
4991 | const unsigned char *src = coding->source + coding->consumed; |
4992 | const unsigned char *src_end = coding->source + coding->src_bytes; | |
4993 | const unsigned char *src_base; | |
69a80ea3 KH |
4994 | int *charbuf = coding->charbuf + coding->charbuf_used; |
4995 | int *charbuf_end | |
4996 | = coding->charbuf + coding->charbuf_size - MAX_ANNOTATION_LENGTH; | |
df7492f9 KH |
4997 | int consumed_chars = 0, consumed_chars_base; |
4998 | int multibytep = coding->src_multibyte; | |
24a73b0a | 4999 | Lisp_Object attrs, charset_list, valids; |
ff0dacd7 KH |
5000 | int char_offset = coding->produced_char; |
5001 | int last_offset = char_offset; | |
5002 | int last_id = charset_ascii; | |
119852e7 KH |
5003 | int eol_crlf = EQ (CODING_ID_EOL_TYPE (coding->id), Qdos); |
5004 | int byte_after_cr = -1; | |
df7492f9 | 5005 | |
24a73b0a | 5006 | CODING_GET_INFO (coding, attrs, charset_list); |
4eb6d3f1 | 5007 | valids = AREF (attrs, coding_attr_charset_valids); |
b73bfc1c | 5008 | |
df7492f9 | 5009 | while (1) |
4ed46869 | 5010 | { |
4eb6d3f1 | 5011 | int c; |
24a73b0a KH |
5012 | Lisp_Object val; |
5013 | struct charset *charset; | |
5014 | int dim; | |
5015 | int len = 1; | |
5016 | unsigned code; | |
df7492f9 KH |
5017 | |
5018 | src_base = src; | |
5019 | consumed_chars_base = consumed_chars; | |
b73bfc1c | 5020 | |
df7492f9 KH |
5021 | if (charbuf >= charbuf_end) |
5022 | break; | |
5023 | ||
119852e7 KH |
5024 | if (byte_after_cr >= 0) |
5025 | { | |
5026 | c = byte_after_cr; | |
5027 | byte_after_cr = -1; | |
5028 | } | |
5029 | else | |
5030 | { | |
5031 | ONE_MORE_BYTE (c); | |
5032 | if (eol_crlf && c == '\r') | |
5033 | ONE_MORE_BYTE (byte_after_cr); | |
5034 | } | |
065e3595 KH |
5035 | if (c < 0) |
5036 | goto invalid_code; | |
24a73b0a KH |
5037 | code = c; |
5038 | ||
5039 | val = AREF (valids, c); | |
5040 | if (NILP (val)) | |
5041 | goto invalid_code; | |
5042 | if (INTEGERP (val)) | |
d46c5b12 | 5043 | { |
24a73b0a KH |
5044 | charset = CHARSET_FROM_ID (XFASTINT (val)); |
5045 | dim = CHARSET_DIMENSION (charset); | |
5046 | while (len < dim) | |
b73bfc1c | 5047 | { |
24a73b0a KH |
5048 | ONE_MORE_BYTE (c); |
5049 | code = (code << 8) | c; | |
5050 | len++; | |
b73bfc1c | 5051 | } |
24a73b0a KH |
5052 | CODING_DECODE_CHAR (coding, src, src_base, src_end, |
5053 | charset, code, c); | |
d46c5b12 | 5054 | } |
df7492f9 | 5055 | else |
d46c5b12 | 5056 | { |
24a73b0a KH |
5057 | /* VAL is a list of charset IDs. It is assured that the |
5058 | list is sorted by charset dimensions (smaller one | |
5059 | comes first). */ | |
5060 | while (CONSP (val)) | |
4eb6d3f1 | 5061 | { |
24a73b0a | 5062 | charset = CHARSET_FROM_ID (XFASTINT (XCAR (val))); |
c7c66a95 | 5063 | dim = CHARSET_DIMENSION (charset); |
f9d71dcd | 5064 | while (len < dim) |
4eb6d3f1 | 5065 | { |
acb2a965 KH |
5066 | ONE_MORE_BYTE (c); |
5067 | code = (code << 8) | c; | |
f9d71dcd | 5068 | len++; |
4eb6d3f1 | 5069 | } |
24a73b0a KH |
5070 | CODING_DECODE_CHAR (coding, src, src_base, |
5071 | src_end, charset, code, c); | |
5072 | if (c >= 0) | |
5073 | break; | |
5074 | val = XCDR (val); | |
ff0dacd7 | 5075 | } |
d46c5b12 | 5076 | } |
24a73b0a KH |
5077 | if (c < 0) |
5078 | goto invalid_code; | |
5079 | if (charset->id != charset_ascii | |
5080 | && last_id != charset->id) | |
5081 | { | |
5082 | if (last_id != charset_ascii) | |
69a80ea3 | 5083 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
24a73b0a KH |
5084 | last_id = charset->id; |
5085 | last_offset = char_offset; | |
5086 | } | |
5087 | ||
df7492f9 | 5088 | *charbuf++ = c; |
ff0dacd7 | 5089 | char_offset++; |
df7492f9 KH |
5090 | continue; |
5091 | ||
5092 | invalid_code: | |
5093 | src = src_base; | |
5094 | consumed_chars = consumed_chars_base; | |
5095 | ONE_MORE_BYTE (c); | |
065e3595 | 5096 | *charbuf++ = c < 0 ? -c : ASCII_BYTE_P (c) ? c : BYTE8_TO_CHAR (c); |
ff0dacd7 | 5097 | char_offset++; |
df7492f9 | 5098 | coding->errors++; |
4ed46869 KH |
5099 | } |
5100 | ||
df7492f9 | 5101 | no_more_source: |
ff0dacd7 | 5102 | if (last_id != charset_ascii) |
69a80ea3 | 5103 | ADD_CHARSET_DATA (charbuf, char_offset - last_offset, last_id); |
df7492f9 KH |
5104 | coding->consumed_char += consumed_chars_base; |
5105 | coding->consumed = src_base - coding->source; | |
5106 | coding->charbuf_used = charbuf - coding->charbuf; | |
4ed46869 KH |
5107 | } |
5108 | ||
df7492f9 KH |
5109 | static int |
5110 | encode_coding_charset (coding) | |
4ed46869 | 5111 | struct coding_system *coding; |
4ed46869 | 5112 | { |
df7492f9 KH |
5113 | int multibytep = coding->dst_multibyte; |
5114 | int *charbuf = coding->charbuf; | |
5115 | int *charbuf_end = charbuf + coding->charbuf_used; | |
5116 | unsigned char *dst = coding->destination + coding->produced; | |
5117 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
5118 | int safe_room = MAX_MULTIBYTE_LENGTH; | |
5119 | int produced_chars = 0; | |
24a73b0a | 5120 | Lisp_Object attrs, charset_list; |
df7492f9 | 5121 | int ascii_compatible; |
b73bfc1c | 5122 | int c; |
b73bfc1c | 5123 | |
24a73b0a | 5124 | CODING_GET_INFO (coding, attrs, charset_list); |
df7492f9 | 5125 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); |
fb88bf2d | 5126 | |
df7492f9 | 5127 | while (charbuf < charbuf_end) |
4ed46869 | 5128 | { |
4eb6d3f1 | 5129 | struct charset *charset; |
df7492f9 | 5130 | unsigned code; |
8f924df7 | 5131 | |
df7492f9 KH |
5132 | ASSURE_DESTINATION (safe_room); |
5133 | c = *charbuf++; | |
5134 | if (ascii_compatible && ASCII_CHAR_P (c)) | |
5135 | EMIT_ONE_ASCII_BYTE (c); | |
16eafb5d | 5136 | else if (CHAR_BYTE8_P (c)) |
4ed46869 | 5137 | { |
16eafb5d KH |
5138 | c = CHAR_TO_BYTE8 (c); |
5139 | EMIT_ONE_BYTE (c); | |
d46c5b12 | 5140 | } |
d46c5b12 | 5141 | else |
b73bfc1c | 5142 | { |
4eb6d3f1 KH |
5143 | charset = char_charset (c, charset_list, &code); |
5144 | if (charset) | |
5145 | { | |
5146 | if (CHARSET_DIMENSION (charset) == 1) | |
5147 | EMIT_ONE_BYTE (code); | |
5148 | else if (CHARSET_DIMENSION (charset) == 2) | |
5149 | EMIT_TWO_BYTES (code >> 8, code & 0xFF); | |
5150 | else if (CHARSET_DIMENSION (charset) == 3) | |
5151 | EMIT_THREE_BYTES (code >> 16, (code >> 8) & 0xFF, code & 0xFF); | |
5152 | else | |
5153 | EMIT_FOUR_BYTES (code >> 24, (code >> 16) & 0xFF, | |
5154 | (code >> 8) & 0xFF, code & 0xFF); | |
5155 | } | |
5156 | else | |
41cbe562 KH |
5157 | { |
5158 | if (coding->mode & CODING_MODE_SAFE_ENCODING) | |
5159 | c = CODING_INHIBIT_CHARACTER_SUBSTITUTION; | |
5160 | else | |
5161 | c = coding->default_char; | |
5162 | EMIT_ONE_BYTE (c); | |
5163 | } | |
4ed46869 | 5164 | } |
4ed46869 KH |
5165 | } |
5166 | ||
065e3595 | 5167 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 KH |
5168 | coding->produced_char += produced_chars; |
5169 | coding->produced = dst - coding->destination; | |
5170 | return 0; | |
4ed46869 KH |
5171 | } |
5172 | ||
5173 | \f | |
1397dc18 | 5174 | /*** 7. C library functions ***/ |
4ed46869 | 5175 | |
df7492f9 KH |
5176 | /* Setup coding context CODING from information about CODING_SYSTEM. |
5177 | If CODING_SYSTEM is nil, `no-conversion' is assumed. If | |
5178 | CODING_SYSTEM is invalid, signal an error. */ | |
4ed46869 | 5179 | |
ec6d2bb8 | 5180 | void |
e0e989f6 KH |
5181 | setup_coding_system (coding_system, coding) |
5182 | Lisp_Object coding_system; | |
4ed46869 KH |
5183 | struct coding_system *coding; |
5184 | { | |
df7492f9 KH |
5185 | Lisp_Object attrs; |
5186 | Lisp_Object eol_type; | |
5187 | Lisp_Object coding_type; | |
4608c386 | 5188 | Lisp_Object val; |
4ed46869 | 5189 | |
df7492f9 | 5190 | if (NILP (coding_system)) |
ae6f73fa | 5191 | coding_system = Qundecided; |
c07c8e12 | 5192 | |
df7492f9 | 5193 | CHECK_CODING_SYSTEM_GET_ID (coding_system, coding->id); |
1f5dbf34 | 5194 | |
df7492f9 KH |
5195 | attrs = CODING_ID_ATTRS (coding->id); |
5196 | eol_type = CODING_ID_EOL_TYPE (coding->id); | |
1f5dbf34 | 5197 | |
df7492f9 KH |
5198 | coding->mode = 0; |
5199 | coding->head_ascii = -1; | |
4a015c45 KH |
5200 | if (VECTORP (eol_type)) |
5201 | coding->common_flags = (CODING_REQUIRE_DECODING_MASK | |
5202 | | CODING_REQUIRE_DETECTION_MASK); | |
5203 | else if (! EQ (eol_type, Qunix)) | |
5204 | coding->common_flags = (CODING_REQUIRE_DECODING_MASK | |
5205 | | CODING_REQUIRE_ENCODING_MASK); | |
5206 | else | |
5207 | coding->common_flags = 0; | |
5e5c78be KH |
5208 | if (! NILP (CODING_ATTR_POST_READ (attrs))) |
5209 | coding->common_flags |= CODING_REQUIRE_DECODING_MASK; | |
5210 | if (! NILP (CODING_ATTR_PRE_WRITE (attrs))) | |
5211 | coding->common_flags |= CODING_REQUIRE_ENCODING_MASK; | |
8f924df7 KH |
5212 | if (! NILP (CODING_ATTR_FOR_UNIBYTE (attrs))) |
5213 | coding->common_flags |= CODING_FOR_UNIBYTE_MASK; | |
1f5dbf34 | 5214 | |
df7492f9 | 5215 | val = CODING_ATTR_SAFE_CHARSETS (attrs); |
8f924df7 KH |
5216 | coding->max_charset_id = SCHARS (val) - 1; |
5217 | coding->safe_charsets = (char *) SDATA (val); | |
df7492f9 | 5218 | coding->default_char = XINT (CODING_ATTR_DEFAULT_CHAR (attrs)); |
4608c386 | 5219 | |
df7492f9 KH |
5220 | coding_type = CODING_ATTR_TYPE (attrs); |
5221 | if (EQ (coding_type, Qundecided)) | |
d46c5b12 | 5222 | { |
df7492f9 KH |
5223 | coding->detector = NULL; |
5224 | coding->decoder = decode_coding_raw_text; | |
5225 | coding->encoder = encode_coding_raw_text; | |
5226 | coding->common_flags |= CODING_REQUIRE_DETECTION_MASK; | |
d46c5b12 | 5227 | } |
df7492f9 | 5228 | else if (EQ (coding_type, Qiso_2022)) |
d46c5b12 | 5229 | { |
df7492f9 KH |
5230 | int i; |
5231 | int flags = XINT (AREF (attrs, coding_attr_iso_flags)); | |
5232 | ||
5233 | /* Invoke graphic register 0 to plane 0. */ | |
5234 | CODING_ISO_INVOCATION (coding, 0) = 0; | |
5235 | /* Invoke graphic register 1 to plane 1 if we can use 8-bit. */ | |
5236 | CODING_ISO_INVOCATION (coding, 1) | |
5237 | = (flags & CODING_ISO_FLAG_SEVEN_BITS ? -1 : 1); | |
5238 | /* Setup the initial status of designation. */ | |
5239 | for (i = 0; i < 4; i++) | |
5240 | CODING_ISO_DESIGNATION (coding, i) = CODING_ISO_INITIAL (coding, i); | |
5241 | /* Not single shifting initially. */ | |
5242 | CODING_ISO_SINGLE_SHIFTING (coding) = 0; | |
5243 | /* Beginning of buffer should also be regarded as bol. */ | |
5244 | CODING_ISO_BOL (coding) = 1; | |
5245 | coding->detector = detect_coding_iso_2022; | |
5246 | coding->decoder = decode_coding_iso_2022; | |
5247 | coding->encoder = encode_coding_iso_2022; | |
5248 | if (flags & CODING_ISO_FLAG_SAFE) | |
5249 | coding->mode |= CODING_MODE_SAFE_ENCODING; | |
d46c5b12 | 5250 | coding->common_flags |
df7492f9 KH |
5251 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK |
5252 | | CODING_REQUIRE_FLUSHING_MASK); | |
5253 | if (flags & CODING_ISO_FLAG_COMPOSITION) | |
5254 | coding->common_flags |= CODING_ANNOTATE_COMPOSITION_MASK; | |
ff0dacd7 KH |
5255 | if (flags & CODING_ISO_FLAG_DESIGNATION) |
5256 | coding->common_flags |= CODING_ANNOTATE_CHARSET_MASK; | |
df7492f9 KH |
5257 | if (flags & CODING_ISO_FLAG_FULL_SUPPORT) |
5258 | { | |
5259 | setup_iso_safe_charsets (attrs); | |
5260 | val = CODING_ATTR_SAFE_CHARSETS (attrs); | |
8f924df7 KH |
5261 | coding->max_charset_id = SCHARS (val) - 1; |
5262 | coding->safe_charsets = (char *) SDATA (val); | |
df7492f9 KH |
5263 | } |
5264 | CODING_ISO_FLAGS (coding) = flags; | |
d46c5b12 | 5265 | } |
df7492f9 | 5266 | else if (EQ (coding_type, Qcharset)) |
d46c5b12 | 5267 | { |
df7492f9 KH |
5268 | coding->detector = detect_coding_charset; |
5269 | coding->decoder = decode_coding_charset; | |
5270 | coding->encoder = encode_coding_charset; | |
d46c5b12 | 5271 | coding->common_flags |
df7492f9 | 5272 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
d46c5b12 | 5273 | } |
df7492f9 | 5274 | else if (EQ (coding_type, Qutf_8)) |
d46c5b12 | 5275 | { |
df7492f9 KH |
5276 | coding->detector = detect_coding_utf_8; |
5277 | coding->decoder = decode_coding_utf_8; | |
5278 | coding->encoder = encode_coding_utf_8; | |
5279 | coding->common_flags | |
5280 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); | |
5281 | } | |
5282 | else if (EQ (coding_type, Qutf_16)) | |
5283 | { | |
5284 | val = AREF (attrs, coding_attr_utf_16_bom); | |
5285 | CODING_UTF_16_BOM (coding) = (CONSP (val) ? utf_16_detect_bom | |
5286 | : EQ (val, Qt) ? utf_16_with_bom | |
5287 | : utf_16_without_bom); | |
5288 | val = AREF (attrs, coding_attr_utf_16_endian); | |
b49a1807 | 5289 | CODING_UTF_16_ENDIAN (coding) = (EQ (val, Qbig) ? utf_16_big_endian |
df7492f9 | 5290 | : utf_16_little_endian); |
e19c3639 | 5291 | CODING_UTF_16_SURROGATE (coding) = 0; |
df7492f9 KH |
5292 | coding->detector = detect_coding_utf_16; |
5293 | coding->decoder = decode_coding_utf_16; | |
5294 | coding->encoder = encode_coding_utf_16; | |
5295 | coding->common_flags | |
5296 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); | |
b49a1807 KH |
5297 | if (CODING_UTF_16_BOM (coding) == utf_16_detect_bom) |
5298 | coding->common_flags |= CODING_REQUIRE_DETECTION_MASK; | |
d46c5b12 | 5299 | } |
df7492f9 | 5300 | else if (EQ (coding_type, Qccl)) |
4ed46869 | 5301 | { |
df7492f9 KH |
5302 | coding->detector = detect_coding_ccl; |
5303 | coding->decoder = decode_coding_ccl; | |
5304 | coding->encoder = encode_coding_ccl; | |
c952af22 | 5305 | coding->common_flags |
df7492f9 KH |
5306 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK |
5307 | | CODING_REQUIRE_FLUSHING_MASK); | |
5308 | } | |
5309 | else if (EQ (coding_type, Qemacs_mule)) | |
5310 | { | |
5311 | coding->detector = detect_coding_emacs_mule; | |
5312 | coding->decoder = decode_coding_emacs_mule; | |
5313 | coding->encoder = encode_coding_emacs_mule; | |
c952af22 | 5314 | coding->common_flags |
df7492f9 KH |
5315 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
5316 | if (! NILP (AREF (attrs, coding_attr_emacs_mule_full)) | |
5317 | && ! EQ (CODING_ATTR_CHARSET_LIST (attrs), Vemacs_mule_charset_list)) | |
5318 | { | |
5319 | Lisp_Object tail, safe_charsets; | |
5320 | int max_charset_id = 0; | |
5321 | ||
5322 | for (tail = Vemacs_mule_charset_list; CONSP (tail); | |
5323 | tail = XCDR (tail)) | |
5324 | if (max_charset_id < XFASTINT (XCAR (tail))) | |
5325 | max_charset_id = XFASTINT (XCAR (tail)); | |
5326 | safe_charsets = Fmake_string (make_number (max_charset_id + 1), | |
5327 | make_number (255)); | |
5328 | for (tail = Vemacs_mule_charset_list; CONSP (tail); | |
5329 | tail = XCDR (tail)) | |
8f924df7 | 5330 | SSET (safe_charsets, XFASTINT (XCAR (tail)), 0); |
df7492f9 | 5331 | coding->max_charset_id = max_charset_id; |
8f924df7 | 5332 | coding->safe_charsets = (char *) SDATA (safe_charsets); |
df7492f9 KH |
5333 | } |
5334 | } | |
5335 | else if (EQ (coding_type, Qshift_jis)) | |
5336 | { | |
5337 | coding->detector = detect_coding_sjis; | |
5338 | coding->decoder = decode_coding_sjis; | |
5339 | coding->encoder = encode_coding_sjis; | |
c952af22 | 5340 | coding->common_flags |
df7492f9 KH |
5341 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
5342 | } | |
5343 | else if (EQ (coding_type, Qbig5)) | |
5344 | { | |
5345 | coding->detector = detect_coding_big5; | |
5346 | coding->decoder = decode_coding_big5; | |
5347 | coding->encoder = encode_coding_big5; | |
c952af22 | 5348 | coding->common_flags |
df7492f9 KH |
5349 | |= (CODING_REQUIRE_DECODING_MASK | CODING_REQUIRE_ENCODING_MASK); |
5350 | } | |
5351 | else /* EQ (coding_type, Qraw_text) */ | |
ec6d2bb8 | 5352 | { |
df7492f9 KH |
5353 | coding->detector = NULL; |
5354 | coding->decoder = decode_coding_raw_text; | |
5355 | coding->encoder = encode_coding_raw_text; | |
ea29edf2 KH |
5356 | if (! EQ (eol_type, Qunix)) |
5357 | { | |
5358 | coding->common_flags |= CODING_REQUIRE_DECODING_MASK; | |
5359 | if (! VECTORP (eol_type)) | |
5360 | coding->common_flags |= CODING_REQUIRE_ENCODING_MASK; | |
5361 | } | |
5362 | ||
4ed46869 | 5363 | } |
4ed46869 | 5364 | |
df7492f9 | 5365 | return; |
4ed46869 KH |
5366 | } |
5367 | ||
0ff61e78 KH |
5368 | /* Return a list of charsets supported by CODING. */ |
5369 | ||
5370 | Lisp_Object | |
5371 | coding_charset_list (coding) | |
5372 | struct coding_system *coding; | |
5373 | { | |
35befdaa | 5374 | Lisp_Object attrs, charset_list; |
0ff61e78 KH |
5375 | |
5376 | CODING_GET_INFO (coding, attrs, charset_list); | |
5377 | if (EQ (CODING_ATTR_TYPE (attrs), Qiso_2022)) | |
5378 | { | |
5379 | int flags = XINT (AREF (attrs, coding_attr_iso_flags)); | |
5380 | ||
5381 | if (flags & CODING_ISO_FLAG_FULL_SUPPORT) | |
5382 | charset_list = Viso_2022_charset_list; | |
5383 | } | |
5384 | else if (EQ (CODING_ATTR_TYPE (attrs), Qemacs_mule)) | |
5385 | { | |
5386 | charset_list = Vemacs_mule_charset_list; | |
5387 | } | |
5388 | return charset_list; | |
5389 | } | |
5390 | ||
5391 | ||
df7492f9 KH |
5392 | /* Return raw-text or one of its subsidiaries that has the same |
5393 | eol_type as CODING-SYSTEM. */ | |
ec6d2bb8 | 5394 | |
df7492f9 KH |
5395 | Lisp_Object |
5396 | raw_text_coding_system (coding_system) | |
5397 | Lisp_Object coding_system; | |
ec6d2bb8 | 5398 | { |
0be8721c | 5399 | Lisp_Object spec, attrs; |
df7492f9 | 5400 | Lisp_Object eol_type, raw_text_eol_type; |
ec6d2bb8 | 5401 | |
d3e4cb56 KH |
5402 | if (NILP (coding_system)) |
5403 | return Qraw_text; | |
df7492f9 KH |
5404 | spec = CODING_SYSTEM_SPEC (coding_system); |
5405 | attrs = AREF (spec, 0); | |
ec6d2bb8 | 5406 | |
df7492f9 KH |
5407 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) |
5408 | return coding_system; | |
ec6d2bb8 | 5409 | |
df7492f9 KH |
5410 | eol_type = AREF (spec, 2); |
5411 | if (VECTORP (eol_type)) | |
5412 | return Qraw_text; | |
5413 | spec = CODING_SYSTEM_SPEC (Qraw_text); | |
5414 | raw_text_eol_type = AREF (spec, 2); | |
5415 | return (EQ (eol_type, Qunix) ? AREF (raw_text_eol_type, 0) | |
5416 | : EQ (eol_type, Qdos) ? AREF (raw_text_eol_type, 1) | |
5417 | : AREF (raw_text_eol_type, 2)); | |
ec6d2bb8 KH |
5418 | } |
5419 | ||
54f78171 | 5420 | |
df7492f9 KH |
5421 | /* If CODING_SYSTEM doesn't specify end-of-line format but PARENT |
5422 | does, return one of the subsidiary that has the same eol-spec as | |
fcbcfb64 KH |
5423 | PARENT. Otherwise, return CODING_SYSTEM. If PARENT is nil, |
5424 | inherit end-of-line format from the system's setting | |
5425 | (system_eol_type). */ | |
df7492f9 KH |
5426 | |
5427 | Lisp_Object | |
5428 | coding_inherit_eol_type (coding_system, parent) | |
b74e4686 | 5429 | Lisp_Object coding_system, parent; |
54f78171 | 5430 | { |
3e139625 | 5431 | Lisp_Object spec, eol_type; |
54f78171 | 5432 | |
d3e4cb56 KH |
5433 | if (NILP (coding_system)) |
5434 | coding_system = Qraw_text; | |
df7492f9 | 5435 | spec = CODING_SYSTEM_SPEC (coding_system); |
df7492f9 | 5436 | eol_type = AREF (spec, 2); |
fcbcfb64 | 5437 | if (VECTORP (eol_type)) |
df7492f9 | 5438 | { |
df7492f9 KH |
5439 | Lisp_Object parent_eol_type; |
5440 | ||
fcbcfb64 KH |
5441 | if (! NILP (parent)) |
5442 | { | |
5443 | Lisp_Object parent_spec; | |
5444 | ||
4a015c45 | 5445 | parent_spec = CODING_SYSTEM_SPEC (parent); |
fcbcfb64 KH |
5446 | parent_eol_type = AREF (parent_spec, 2); |
5447 | } | |
5448 | else | |
5449 | parent_eol_type = system_eol_type; | |
df7492f9 KH |
5450 | if (EQ (parent_eol_type, Qunix)) |
5451 | coding_system = AREF (eol_type, 0); | |
5452 | else if (EQ (parent_eol_type, Qdos)) | |
5453 | coding_system = AREF (eol_type, 1); | |
5454 | else if (EQ (parent_eol_type, Qmac)) | |
5455 | coding_system = AREF (eol_type, 2); | |
54f78171 | 5456 | } |
df7492f9 | 5457 | return coding_system; |
54f78171 KH |
5458 | } |
5459 | ||
4ed46869 KH |
5460 | /* Emacs has a mechanism to automatically detect a coding system if it |
5461 | is one of Emacs' internal format, ISO2022, SJIS, and BIG5. But, | |
5462 | it's impossible to distinguish some coding systems accurately | |
5463 | because they use the same range of codes. So, at first, coding | |
5464 | systems are categorized into 7, those are: | |
5465 | ||
0ef69138 | 5466 | o coding-category-emacs-mule |
4ed46869 KH |
5467 | |
5468 | The category for a coding system which has the same code range | |
5469 | as Emacs' internal format. Assigned the coding-system (Lisp | |
0ef69138 | 5470 | symbol) `emacs-mule' by default. |
4ed46869 KH |
5471 | |
5472 | o coding-category-sjis | |
5473 | ||
5474 | The category for a coding system which has the same code range | |
5475 | as SJIS. Assigned the coding-system (Lisp | |
7717c392 | 5476 | symbol) `japanese-shift-jis' by default. |
4ed46869 KH |
5477 | |
5478 | o coding-category-iso-7 | |
5479 | ||
5480 | The category for a coding system which has the same code range | |
7717c392 | 5481 | as ISO2022 of 7-bit environment. This doesn't use any locking |
d46c5b12 KH |
5482 | shift and single shift functions. This can encode/decode all |
5483 | charsets. Assigned the coding-system (Lisp symbol) | |
5484 | `iso-2022-7bit' by default. | |
5485 | ||
5486 | o coding-category-iso-7-tight | |
5487 | ||
5488 | Same as coding-category-iso-7 except that this can | |
5489 | encode/decode only the specified charsets. | |
4ed46869 KH |
5490 | |
5491 | o coding-category-iso-8-1 | |
5492 | ||
5493 | The category for a coding system which has the same code range | |
5494 | as ISO2022 of 8-bit environment and graphic plane 1 used only | |
7717c392 KH |
5495 | for DIMENSION1 charset. This doesn't use any locking shift |
5496 | and single shift functions. Assigned the coding-system (Lisp | |
5497 | symbol) `iso-latin-1' by default. | |
4ed46869 KH |
5498 | |
5499 | o coding-category-iso-8-2 | |
5500 | ||
5501 | The category for a coding system which has the same code range | |
5502 | as ISO2022 of 8-bit environment and graphic plane 1 used only | |
7717c392 KH |
5503 | for DIMENSION2 charset. This doesn't use any locking shift |
5504 | and single shift functions. Assigned the coding-system (Lisp | |
5505 | symbol) `japanese-iso-8bit' by default. | |
4ed46869 | 5506 | |
7717c392 | 5507 | o coding-category-iso-7-else |
4ed46869 KH |
5508 | |
5509 | The category for a coding system which has the same code range | |
df7492f9 | 5510 | as ISO2022 of 7-bit environemnt but uses locking shift or |
7717c392 KH |
5511 | single shift functions. Assigned the coding-system (Lisp |
5512 | symbol) `iso-2022-7bit-lock' by default. | |
5513 | ||
5514 | o coding-category-iso-8-else | |
5515 | ||
5516 | The category for a coding system which has the same code range | |
df7492f9 | 5517 | as ISO2022 of 8-bit environemnt but uses locking shift or |
7717c392 KH |
5518 | single shift functions. Assigned the coding-system (Lisp |
5519 | symbol) `iso-2022-8bit-ss2' by default. | |
4ed46869 KH |
5520 | |
5521 | o coding-category-big5 | |
5522 | ||
5523 | The category for a coding system which has the same code range | |
5524 | as BIG5. Assigned the coding-system (Lisp symbol) | |
e0e989f6 | 5525 | `cn-big5' by default. |
4ed46869 | 5526 | |
fa42c37f KH |
5527 | o coding-category-utf-8 |
5528 | ||
5529 | The category for a coding system which has the same code range | |
6e76ae91 | 5530 | as UTF-8 (cf. RFC3629). Assigned the coding-system (Lisp |
fa42c37f KH |
5531 | symbol) `utf-8' by default. |
5532 | ||
5533 | o coding-category-utf-16-be | |
5534 | ||
5535 | The category for a coding system in which a text has an | |
5536 | Unicode signature (cf. Unicode Standard) in the order of BIG | |
5537 | endian at the head. Assigned the coding-system (Lisp symbol) | |
5538 | `utf-16-be' by default. | |
5539 | ||
5540 | o coding-category-utf-16-le | |
5541 | ||
5542 | The category for a coding system in which a text has an | |
5543 | Unicode signature (cf. Unicode Standard) in the order of | |
5544 | LITTLE endian at the head. Assigned the coding-system (Lisp | |
5545 | symbol) `utf-16-le' by default. | |
5546 | ||
1397dc18 KH |
5547 | o coding-category-ccl |
5548 | ||
5549 | The category for a coding system of which encoder/decoder is | |
5550 | written in CCL programs. The default value is nil, i.e., no | |
5551 | coding system is assigned. | |
5552 | ||
4ed46869 KH |
5553 | o coding-category-binary |
5554 | ||
5555 | The category for a coding system not categorized in any of the | |
5556 | above. Assigned the coding-system (Lisp symbol) | |
e0e989f6 | 5557 | `no-conversion' by default. |
4ed46869 KH |
5558 | |
5559 | Each of them is a Lisp symbol and the value is an actual | |
df7492f9 | 5560 | `coding-system's (this is also a Lisp symbol) assigned by a user. |
4ed46869 KH |
5561 | What Emacs does actually is to detect a category of coding system. |
5562 | Then, it uses a `coding-system' assigned to it. If Emacs can't | |
df7492f9 | 5563 | decide only one possible category, it selects a category of the |
4ed46869 KH |
5564 | highest priority. Priorities of categories are also specified by a |
5565 | user in a Lisp variable `coding-category-list'. | |
5566 | ||
5567 | */ | |
5568 | ||
df7492f9 KH |
5569 | #define EOL_SEEN_NONE 0 |
5570 | #define EOL_SEEN_LF 1 | |
5571 | #define EOL_SEEN_CR 2 | |
5572 | #define EOL_SEEN_CRLF 4 | |
66cfb530 | 5573 | |
ff0dacd7 KH |
5574 | /* Detect how end-of-line of a text of length SRC_BYTES pointed by |
5575 | SOURCE is encoded. If CATEGORY is one of | |
5576 | coding_category_utf_16_XXXX, assume that CR and LF are encoded by | |
5577 | two-byte, else they are encoded by one-byte. | |
5578 | ||
5579 | Return one of EOL_SEEN_XXX. */ | |
4ed46869 | 5580 | |
bc4bc72a | 5581 | #define MAX_EOL_CHECK_COUNT 3 |
d46c5b12 KH |
5582 | |
5583 | static int | |
89528eb3 | 5584 | detect_eol (source, src_bytes, category) |
f6cbaf43 | 5585 | const unsigned char *source; |
df7492f9 | 5586 | EMACS_INT src_bytes; |
89528eb3 | 5587 | enum coding_category category; |
4ed46869 | 5588 | { |
f6cbaf43 | 5589 | const unsigned char *src = source, *src_end = src + src_bytes; |
4ed46869 | 5590 | unsigned char c; |
df7492f9 KH |
5591 | int total = 0; |
5592 | int eol_seen = EOL_SEEN_NONE; | |
4ed46869 | 5593 | |
89528eb3 | 5594 | if ((1 << category) & CATEGORY_MASK_UTF_16) |
4ed46869 | 5595 | { |
df7492f9 | 5596 | int msb, lsb; |
fa42c37f | 5597 | |
89528eb3 KH |
5598 | msb = category == (coding_category_utf_16_le |
5599 | | coding_category_utf_16_le_nosig); | |
df7492f9 | 5600 | lsb = 1 - msb; |
fa42c37f | 5601 | |
df7492f9 | 5602 | while (src + 1 < src_end) |
fa42c37f | 5603 | { |
df7492f9 KH |
5604 | c = src[lsb]; |
5605 | if (src[msb] == 0 && (c == '\n' || c == '\r')) | |
fa42c37f | 5606 | { |
df7492f9 KH |
5607 | int this_eol; |
5608 | ||
5609 | if (c == '\n') | |
5610 | this_eol = EOL_SEEN_LF; | |
5611 | else if (src + 3 >= src_end | |
5612 | || src[msb + 2] != 0 | |
5613 | || src[lsb + 2] != '\n') | |
5614 | this_eol = EOL_SEEN_CR; | |
fa42c37f | 5615 | else |
8f924df7 | 5616 | this_eol = EOL_SEEN_CRLF; |
df7492f9 KH |
5617 | |
5618 | if (eol_seen == EOL_SEEN_NONE) | |
5619 | /* This is the first end-of-line. */ | |
5620 | eol_seen = this_eol; | |
5621 | else if (eol_seen != this_eol) | |
fa42c37f | 5622 | { |
df7492f9 KH |
5623 | /* The found type is different from what found before. */ |
5624 | eol_seen = EOL_SEEN_LF; | |
5625 | break; | |
fa42c37f | 5626 | } |
df7492f9 KH |
5627 | if (++total == MAX_EOL_CHECK_COUNT) |
5628 | break; | |
fa42c37f | 5629 | } |
df7492f9 | 5630 | src += 2; |
fa42c37f | 5631 | } |
bcf26d6a | 5632 | } |
d46c5b12 | 5633 | else |
c4825358 | 5634 | { |
df7492f9 | 5635 | while (src < src_end) |
27901516 | 5636 | { |
df7492f9 KH |
5637 | c = *src++; |
5638 | if (c == '\n' || c == '\r') | |
5639 | { | |
5640 | int this_eol; | |
d46c5b12 | 5641 | |
df7492f9 KH |
5642 | if (c == '\n') |
5643 | this_eol = EOL_SEEN_LF; | |
5644 | else if (src >= src_end || *src != '\n') | |
5645 | this_eol = EOL_SEEN_CR; | |
5646 | else | |
5647 | this_eol = EOL_SEEN_CRLF, src++; | |
d46c5b12 | 5648 | |
df7492f9 KH |
5649 | if (eol_seen == EOL_SEEN_NONE) |
5650 | /* This is the first end-of-line. */ | |
5651 | eol_seen = this_eol; | |
5652 | else if (eol_seen != this_eol) | |
5653 | { | |
5654 | /* The found type is different from what found before. */ | |
5655 | eol_seen = EOL_SEEN_LF; | |
5656 | break; | |
5657 | } | |
5658 | if (++total == MAX_EOL_CHECK_COUNT) | |
5659 | break; | |
5660 | } | |
5661 | } | |
73be902c | 5662 | } |
df7492f9 | 5663 | return eol_seen; |
73be902c KH |
5664 | } |
5665 | ||
df7492f9 | 5666 | |
24a73b0a | 5667 | static Lisp_Object |
df7492f9 KH |
5668 | adjust_coding_eol_type (coding, eol_seen) |
5669 | struct coding_system *coding; | |
5670 | int eol_seen; | |
73be902c | 5671 | { |
0be8721c | 5672 | Lisp_Object eol_type; |
8f924df7 | 5673 | |
df7492f9 KH |
5674 | eol_type = CODING_ID_EOL_TYPE (coding->id); |
5675 | if (eol_seen & EOL_SEEN_LF) | |
24a73b0a KH |
5676 | { |
5677 | coding->id = CODING_SYSTEM_ID (AREF (eol_type, 0)); | |
5678 | eol_type = Qunix; | |
5679 | } | |
6f197c07 | 5680 | else if (eol_seen & EOL_SEEN_CRLF) |
24a73b0a KH |
5681 | { |
5682 | coding->id = CODING_SYSTEM_ID (AREF (eol_type, 1)); | |
5683 | eol_type = Qdos; | |
5684 | } | |
6f197c07 | 5685 | else if (eol_seen & EOL_SEEN_CR) |
24a73b0a KH |
5686 | { |
5687 | coding->id = CODING_SYSTEM_ID (AREF (eol_type, 2)); | |
5688 | eol_type = Qmac; | |
5689 | } | |
5690 | return eol_type; | |
d46c5b12 | 5691 | } |
4ed46869 | 5692 | |
df7492f9 KH |
5693 | /* Detect how a text specified in CODING is encoded. If a coding |
5694 | system is detected, update fields of CODING by the detected coding | |
5695 | system. */ | |
0a28aafb | 5696 | |
df7492f9 KH |
5697 | void |
5698 | detect_coding (coding) | |
d46c5b12 | 5699 | struct coding_system *coding; |
d46c5b12 | 5700 | { |
8f924df7 | 5701 | const unsigned char *src, *src_end; |
d46c5b12 | 5702 | |
df7492f9 KH |
5703 | coding->consumed = coding->consumed_char = 0; |
5704 | coding->produced = coding->produced_char = 0; | |
5705 | coding_set_source (coding); | |
1c3478b0 | 5706 | |
df7492f9 | 5707 | src_end = coding->source + coding->src_bytes; |
1c3478b0 | 5708 | |
df7492f9 KH |
5709 | /* If we have not yet decided the text encoding type, detect it |
5710 | now. */ | |
5711 | if (EQ (CODING_ATTR_TYPE (CODING_ID_ATTRS (coding->id)), Qundecided)) | |
b73bfc1c | 5712 | { |
df7492f9 | 5713 | int c, i; |
6cb21a4f | 5714 | struct coding_detection_info detect_info; |
2f3cbb32 | 5715 | int null_byte_found = 0, eight_bit_found = 0; |
df7492f9 | 5716 | |
6cb21a4f | 5717 | detect_info.checked = detect_info.found = detect_info.rejected = 0; |
2f3cbb32 KH |
5718 | coding->head_ascii = -1; |
5719 | for (src = coding->source; src < src_end; src++) | |
d46c5b12 | 5720 | { |
df7492f9 | 5721 | c = *src; |
6cb21a4f | 5722 | if (c & 0x80) |
6cb21a4f | 5723 | { |
2f3cbb32 KH |
5724 | eight_bit_found = 1; |
5725 | if (coding->head_ascii < 0) | |
5726 | coding->head_ascii = src - coding->source; | |
5727 | if (null_byte_found) | |
5728 | break; | |
5729 | } | |
5730 | else if (c < 0x20) | |
5731 | { | |
5732 | if ((c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO) | |
5733 | && ! inhibit_iso_escape_detection | |
5734 | && ! detect_info.checked) | |
6cb21a4f | 5735 | { |
2f3cbb32 KH |
5736 | if (coding->head_ascii < 0) |
5737 | coding->head_ascii = src - coding->source; | |
5738 | if (detect_coding_iso_2022 (coding, &detect_info)) | |
5739 | { | |
5740 | /* We have scanned the whole data. */ | |
5741 | if (! (detect_info.rejected & CATEGORY_MASK_ISO_7_ELSE)) | |
5742 | /* We didn't find an 8-bit code. We may have | |
5743 | found a null-byte, but it's very rare that | |
5744 | a binary file confirm to ISO-2022. */ | |
5745 | src = src_end; | |
5746 | break; | |
5747 | } | |
5748 | } | |
5749 | else if (! c) | |
5750 | { | |
5751 | null_byte_found = 1; | |
5752 | if (eight_bit_found) | |
5753 | break; | |
6cb21a4f KH |
5754 | } |
5755 | } | |
d46c5b12 | 5756 | } |
2f3cbb32 KH |
5757 | if (coding->head_ascii < 0) |
5758 | coding->head_ascii = src - coding->source; | |
df7492f9 | 5759 | |
2f3cbb32 KH |
5760 | if (null_byte_found || eight_bit_found |
5761 | || coding->head_ascii < coding->src_bytes | |
6cb21a4f | 5762 | || detect_info.found) |
d46c5b12 | 5763 | { |
ff0dacd7 KH |
5764 | enum coding_category category; |
5765 | struct coding_system *this; | |
df7492f9 | 5766 | |
6cb21a4f KH |
5767 | if (coding->head_ascii == coding->src_bytes) |
5768 | /* As all bytes are 7-bit, we can ignore non-ISO-2022 codings. */ | |
5769 | for (i = 0; i < coding_category_raw_text; i++) | |
5770 | { | |
5771 | category = coding_priorities[i]; | |
5772 | this = coding_categories + category; | |
5773 | if (detect_info.found & (1 << category)) | |
24a73b0a | 5774 | break; |
6cb21a4f KH |
5775 | } |
5776 | else | |
2f3cbb32 KH |
5777 | { |
5778 | if (null_byte_found) | |
ff0dacd7 | 5779 | { |
2f3cbb32 KH |
5780 | detect_info.checked |= ~CATEGORY_MASK_UTF_16; |
5781 | detect_info.rejected |= ~CATEGORY_MASK_UTF_16; | |
ff0dacd7 | 5782 | } |
2f3cbb32 KH |
5783 | for (i = 0; i < coding_category_raw_text; i++) |
5784 | { | |
5785 | category = coding_priorities[i]; | |
5786 | this = coding_categories + category; | |
5787 | if (this->id < 0) | |
5788 | { | |
5789 | /* No coding system of this category is defined. */ | |
5790 | detect_info.rejected |= (1 << category); | |
5791 | } | |
5792 | else if (category >= coding_category_raw_text) | |
5793 | continue; | |
5794 | else if (detect_info.checked & (1 << category)) | |
5795 | { | |
5796 | if (detect_info.found & (1 << category)) | |
5797 | break; | |
5798 | } | |
5799 | else if ((*(this->detector)) (coding, &detect_info) | |
5800 | && detect_info.found & (1 << category)) | |
5801 | { | |
5802 | if (category == coding_category_utf_16_auto) | |
5803 | { | |
5804 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
5805 | category = coding_category_utf_16_le; | |
5806 | else | |
5807 | category = coding_category_utf_16_be; | |
5808 | } | |
5809 | break; | |
5810 | } | |
5811 | } | |
5812 | ||
5813 | if (i < coding_category_raw_text) | |
5814 | setup_coding_system (CODING_ID_NAME (this->id), coding); | |
5815 | else if (null_byte_found) | |
5816 | setup_coding_system (Qno_conversion, coding); | |
5817 | else if ((detect_info.rejected & CATEGORY_MASK_ANY) | |
5818 | == CATEGORY_MASK_ANY) | |
5819 | setup_coding_system (Qraw_text, coding); | |
5820 | else if (detect_info.rejected) | |
5821 | for (i = 0; i < coding_category_raw_text; i++) | |
5822 | if (! (detect_info.rejected & (1 << coding_priorities[i]))) | |
5823 | { | |
5824 | this = coding_categories + coding_priorities[i]; | |
5825 | setup_coding_system (CODING_ID_NAME (this->id), coding); | |
5826 | break; | |
5827 | } | |
5828 | } | |
d46c5b12 | 5829 | } |
b73bfc1c | 5830 | } |
24a73b0a KH |
5831 | else if (XINT (CODING_ATTR_CATEGORY (CODING_ID_ATTRS (coding->id))) |
5832 | == coding_category_utf_16_auto) | |
b49a1807 KH |
5833 | { |
5834 | Lisp_Object coding_systems; | |
5835 | struct coding_detection_info detect_info; | |
5836 | ||
5837 | coding_systems | |
5838 | = AREF (CODING_ID_ATTRS (coding->id), coding_attr_utf_16_bom); | |
5839 | detect_info.found = detect_info.rejected = 0; | |
5840 | if (CONSP (coding_systems) | |
24a73b0a | 5841 | && detect_coding_utf_16 (coding, &detect_info)) |
b49a1807 KH |
5842 | { |
5843 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
5844 | setup_coding_system (XCAR (coding_systems), coding); | |
24a73b0a | 5845 | else if (detect_info.found & CATEGORY_MASK_UTF_16_BE) |
b49a1807 KH |
5846 | setup_coding_system (XCDR (coding_systems), coding); |
5847 | } | |
5848 | } | |
4ed46869 | 5849 | } |
4ed46869 | 5850 | |
d46c5b12 | 5851 | |
aaaf0b1e | 5852 | static void |
df7492f9 | 5853 | decode_eol (coding) |
aaaf0b1e | 5854 | struct coding_system *coding; |
aaaf0b1e | 5855 | { |
24a73b0a KH |
5856 | Lisp_Object eol_type; |
5857 | unsigned char *p, *pbeg, *pend; | |
5858 | ||
5859 | eol_type = CODING_ID_EOL_TYPE (coding->id); | |
5860 | if (EQ (eol_type, Qunix)) | |
5861 | return; | |
5862 | ||
5863 | if (NILP (coding->dst_object)) | |
5864 | pbeg = coding->destination; | |
5865 | else | |
5866 | pbeg = BYTE_POS_ADDR (coding->dst_pos_byte); | |
5867 | pend = pbeg + coding->produced; | |
5868 | ||
5869 | if (VECTORP (eol_type)) | |
aaaf0b1e | 5870 | { |
df7492f9 | 5871 | int eol_seen = EOL_SEEN_NONE; |
4ed46869 | 5872 | |
24a73b0a | 5873 | for (p = pbeg; p < pend; p++) |
aaaf0b1e | 5874 | { |
df7492f9 KH |
5875 | if (*p == '\n') |
5876 | eol_seen |= EOL_SEEN_LF; | |
5877 | else if (*p == '\r') | |
aaaf0b1e | 5878 | { |
df7492f9 | 5879 | if (p + 1 < pend && *(p + 1) == '\n') |
aaaf0b1e | 5880 | { |
df7492f9 KH |
5881 | eol_seen |= EOL_SEEN_CRLF; |
5882 | p++; | |
aaaf0b1e | 5883 | } |
aaaf0b1e | 5884 | else |
df7492f9 | 5885 | eol_seen |= EOL_SEEN_CR; |
aaaf0b1e | 5886 | } |
aaaf0b1e | 5887 | } |
24a73b0a KH |
5888 | if (eol_seen != EOL_SEEN_NONE |
5889 | && eol_seen != EOL_SEEN_LF | |
5890 | && eol_seen != EOL_SEEN_CRLF | |
5891 | && eol_seen != EOL_SEEN_CR) | |
5892 | eol_seen = EOL_SEEN_LF; | |
df7492f9 | 5893 | if (eol_seen != EOL_SEEN_NONE) |
24a73b0a | 5894 | eol_type = adjust_coding_eol_type (coding, eol_seen); |
aaaf0b1e | 5895 | } |
d46c5b12 | 5896 | |
24a73b0a | 5897 | if (EQ (eol_type, Qmac)) |
27901516 | 5898 | { |
24a73b0a | 5899 | for (p = pbeg; p < pend; p++) |
df7492f9 KH |
5900 | if (*p == '\r') |
5901 | *p = '\n'; | |
4ed46869 | 5902 | } |
24a73b0a | 5903 | else if (EQ (eol_type, Qdos)) |
df7492f9 | 5904 | { |
24a73b0a | 5905 | int n = 0; |
b73bfc1c | 5906 | |
24a73b0a KH |
5907 | if (NILP (coding->dst_object)) |
5908 | { | |
4347441b KH |
5909 | /* Start deleting '\r' from the tail to minimize the memory |
5910 | movement. */ | |
24a73b0a KH |
5911 | for (p = pend - 2; p >= pbeg; p--) |
5912 | if (*p == '\r') | |
5913 | { | |
5914 | safe_bcopy ((char *) (p + 1), (char *) p, pend-- - p - 1); | |
5915 | n++; | |
5916 | } | |
5917 | } | |
5918 | else | |
5919 | { | |
4347441b KH |
5920 | int pos_byte = coding->dst_pos_byte; |
5921 | int pos = coding->dst_pos; | |
5922 | int pos_end = pos + coding->produced_char - 1; | |
5923 | ||
5924 | while (pos < pos_end) | |
5925 | { | |
5926 | p = BYTE_POS_ADDR (pos_byte); | |
5927 | if (*p == '\r' && p[1] == '\n') | |
5928 | { | |
5929 | del_range_2 (pos, pos_byte, pos + 1, pos_byte + 1, 0); | |
5930 | n++; | |
5931 | pos_end--; | |
5932 | } | |
5933 | pos++; | |
69b8522d KH |
5934 | if (coding->dst_multibyte) |
5935 | pos_byte += BYTES_BY_CHAR_HEAD (*p); | |
5936 | else | |
5937 | pos_byte++; | |
4347441b | 5938 | } |
24a73b0a KH |
5939 | } |
5940 | coding->produced -= n; | |
5941 | coding->produced_char -= n; | |
aaaf0b1e | 5942 | } |
4ed46869 KH |
5943 | } |
5944 | ||
7d64c6ad | 5945 | |
a6f87d34 KH |
5946 | /* Return a translation table (or list of them) from coding system |
5947 | attribute vector ATTRS for encoding (ENCODEP is nonzero) or | |
5948 | decoding (ENCODEP is zero). */ | |
7d64c6ad | 5949 | |
e6a54062 | 5950 | static Lisp_Object |
09ee6fdd KH |
5951 | get_translation_table (attrs, encodep, max_lookup) |
5952 | Lisp_Object attrs; | |
5953 | int encodep, *max_lookup; | |
7d64c6ad KH |
5954 | { |
5955 | Lisp_Object standard, translation_table; | |
09ee6fdd | 5956 | Lisp_Object val; |
7d64c6ad KH |
5957 | |
5958 | if (encodep) | |
5959 | translation_table = CODING_ATTR_ENCODE_TBL (attrs), | |
5960 | standard = Vstandard_translation_table_for_encode; | |
5961 | else | |
5962 | translation_table = CODING_ATTR_DECODE_TBL (attrs), | |
5963 | standard = Vstandard_translation_table_for_decode; | |
7d64c6ad | 5964 | if (NILP (translation_table)) |
09ee6fdd KH |
5965 | translation_table = standard; |
5966 | else | |
a6f87d34 | 5967 | { |
09ee6fdd KH |
5968 | if (SYMBOLP (translation_table)) |
5969 | translation_table = Fget (translation_table, Qtranslation_table); | |
5970 | else if (CONSP (translation_table)) | |
5971 | { | |
5972 | translation_table = Fcopy_sequence (translation_table); | |
5973 | for (val = translation_table; CONSP (val); val = XCDR (val)) | |
5974 | if (SYMBOLP (XCAR (val))) | |
5975 | XSETCAR (val, Fget (XCAR (val), Qtranslation_table)); | |
5976 | } | |
5977 | if (CHAR_TABLE_P (standard)) | |
5978 | { | |
5979 | if (CONSP (translation_table)) | |
5980 | translation_table = nconc2 (translation_table, | |
5981 | Fcons (standard, Qnil)); | |
5982 | else | |
5983 | translation_table = Fcons (translation_table, | |
5984 | Fcons (standard, Qnil)); | |
5985 | } | |
a6f87d34 | 5986 | } |
2170c8f0 KH |
5987 | |
5988 | if (max_lookup) | |
09ee6fdd | 5989 | { |
2170c8f0 KH |
5990 | *max_lookup = 1; |
5991 | if (CHAR_TABLE_P (translation_table) | |
5992 | && CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (translation_table)) > 1) | |
5993 | { | |
5994 | val = XCHAR_TABLE (translation_table)->extras[1]; | |
5995 | if (NATNUMP (val) && *max_lookup < XFASTINT (val)) | |
5996 | *max_lookup = XFASTINT (val); | |
5997 | } | |
5998 | else if (CONSP (translation_table)) | |
5999 | { | |
6000 | Lisp_Object tail, val; | |
09ee6fdd | 6001 | |
2170c8f0 KH |
6002 | for (tail = translation_table; CONSP (tail); tail = XCDR (tail)) |
6003 | if (CHAR_TABLE_P (XCAR (tail)) | |
6004 | && CHAR_TABLE_EXTRA_SLOTS (XCHAR_TABLE (XCAR (tail))) > 1) | |
6005 | { | |
6006 | val = XCHAR_TABLE (XCAR (tail))->extras[1]; | |
6007 | if (NATNUMP (val) && *max_lookup < XFASTINT (val)) | |
6008 | *max_lookup = XFASTINT (val); | |
6009 | } | |
6010 | } | |
a6f87d34 | 6011 | } |
7d64c6ad KH |
6012 | return translation_table; |
6013 | } | |
6014 | ||
09ee6fdd KH |
6015 | #define LOOKUP_TRANSLATION_TABLE(table, c, trans) \ |
6016 | do { \ | |
6017 | trans = Qnil; \ | |
6018 | if (CHAR_TABLE_P (table)) \ | |
6019 | { \ | |
6020 | trans = CHAR_TABLE_REF (table, c); \ | |
6021 | if (CHARACTERP (trans)) \ | |
6022 | c = XFASTINT (trans), trans = Qnil; \ | |
6023 | } \ | |
6024 | else if (CONSP (table)) \ | |
6025 | { \ | |
6026 | Lisp_Object tail; \ | |
6027 | \ | |
6028 | for (tail = table; CONSP (tail); tail = XCDR (tail)) \ | |
6029 | if (CHAR_TABLE_P (XCAR (tail))) \ | |
6030 | { \ | |
6031 | trans = CHAR_TABLE_REF (XCAR (tail), c); \ | |
6032 | if (CHARACTERP (trans)) \ | |
6033 | c = XFASTINT (trans), trans = Qnil; \ | |
6034 | else if (! NILP (trans)) \ | |
6035 | break; \ | |
6036 | } \ | |
6037 | } \ | |
e6a54062 KH |
6038 | } while (0) |
6039 | ||
7d64c6ad | 6040 | |
69a80ea3 KH |
6041 | static Lisp_Object |
6042 | get_translation (val, buf, buf_end, last_block, from_nchars, to_nchars) | |
6043 | Lisp_Object val; | |
6044 | int *buf, *buf_end; | |
6045 | int last_block; | |
6046 | int *from_nchars, *to_nchars; | |
6047 | { | |
433f7f87 KH |
6048 | /* VAL is TO or (([FROM-CHAR ...] . TO) ...) where TO is TO-CHAR or |
6049 | [TO-CHAR ...]. */ | |
69a80ea3 KH |
6050 | if (CONSP (val)) |
6051 | { | |
433f7f87 | 6052 | Lisp_Object from, tail; |
69a80ea3 KH |
6053 | int i, len; |
6054 | ||
433f7f87 | 6055 | for (tail = val; CONSP (tail); tail = XCDR (tail)) |
69a80ea3 | 6056 | { |
433f7f87 KH |
6057 | val = XCAR (tail); |
6058 | from = XCAR (val); | |
6059 | len = ASIZE (from); | |
6060 | for (i = 0; i < len; i++) | |
6061 | { | |
6062 | if (buf + i == buf_end) | |
6063 | { | |
6064 | if (! last_block) | |
6065 | return Qt; | |
6066 | break; | |
6067 | } | |
6068 | if (XINT (AREF (from, i)) != buf[i]) | |
6069 | break; | |
6070 | } | |
6071 | if (i == len) | |
6072 | { | |
6073 | val = XCDR (val); | |
6074 | *from_nchars = len; | |
6075 | break; | |
6076 | } | |
69a80ea3 | 6077 | } |
433f7f87 KH |
6078 | if (! CONSP (tail)) |
6079 | return Qnil; | |
69a80ea3 KH |
6080 | } |
6081 | if (VECTORP (val)) | |
6082 | *buf = XINT (AREF (val, 0)), *to_nchars = ASIZE (val); | |
6083 | else | |
6084 | *buf = XINT (val); | |
6085 | return val; | |
6086 | } | |
6087 | ||
6088 | ||
d46c5b12 | 6089 | static int |
69a80ea3 | 6090 | produce_chars (coding, translation_table, last_block) |
df7492f9 | 6091 | struct coding_system *coding; |
69a80ea3 KH |
6092 | Lisp_Object translation_table; |
6093 | int last_block; | |
4ed46869 | 6094 | { |
df7492f9 KH |
6095 | unsigned char *dst = coding->destination + coding->produced; |
6096 | unsigned char *dst_end = coding->destination + coding->dst_bytes; | |
119852e7 KH |
6097 | EMACS_INT produced; |
6098 | EMACS_INT produced_chars = 0; | |
69a80ea3 | 6099 | int carryover = 0; |
4ed46869 | 6100 | |
df7492f9 | 6101 | if (! coding->chars_at_source) |
4ed46869 | 6102 | { |
119852e7 | 6103 | /* Source characters are in coding->charbuf. */ |
fba4576f AS |
6104 | int *buf = coding->charbuf; |
6105 | int *buf_end = buf + coding->charbuf_used; | |
4ed46869 | 6106 | |
db274c7a KH |
6107 | if (EQ (coding->src_object, coding->dst_object)) |
6108 | { | |
6109 | coding_set_source (coding); | |
6110 | dst_end = ((unsigned char *) coding->source) + coding->consumed; | |
6111 | } | |
4ed46869 | 6112 | |
df7492f9 | 6113 | while (buf < buf_end) |
4ed46869 | 6114 | { |
69a80ea3 | 6115 | int c = *buf, i; |
bc4bc72a | 6116 | |
df7492f9 KH |
6117 | if (c >= 0) |
6118 | { | |
69a80ea3 KH |
6119 | int from_nchars = 1, to_nchars = 1; |
6120 | Lisp_Object trans = Qnil; | |
6121 | ||
09ee6fdd | 6122 | LOOKUP_TRANSLATION_TABLE (translation_table, c, trans); |
e6a54062 | 6123 | if (! NILP (trans)) |
69a80ea3 KH |
6124 | { |
6125 | trans = get_translation (trans, buf, buf_end, last_block, | |
6126 | &from_nchars, &to_nchars); | |
6127 | if (EQ (trans, Qt)) | |
6128 | break; | |
6129 | c = *buf; | |
6130 | } | |
6131 | ||
6132 | if (dst + MAX_MULTIBYTE_LENGTH * to_nchars > dst_end) | |
6133 | { | |
6134 | dst = alloc_destination (coding, | |
6135 | buf_end - buf | |
6136 | + MAX_MULTIBYTE_LENGTH * to_nchars, | |
6137 | dst); | |
db274c7a KH |
6138 | if (EQ (coding->src_object, coding->dst_object)) |
6139 | { | |
6140 | coding_set_source (coding); | |
6141 | dst_end = ((unsigned char *) coding->source) + coding->consumed; | |
6142 | } | |
6143 | else | |
6144 | dst_end = coding->destination + coding->dst_bytes; | |
69a80ea3 KH |
6145 | } |
6146 | ||
433f7f87 | 6147 | for (i = 0; i < to_nchars; i++) |
69a80ea3 | 6148 | { |
433f7f87 KH |
6149 | if (i > 0) |
6150 | c = XINT (AREF (trans, i)); | |
69a80ea3 KH |
6151 | if (coding->dst_multibyte |
6152 | || ! CHAR_BYTE8_P (c)) | |
db274c7a | 6153 | CHAR_STRING_ADVANCE_NO_UNIFY (c, dst); |
69a80ea3 KH |
6154 | else |
6155 | *dst++ = CHAR_TO_BYTE8 (c); | |
6156 | } | |
6157 | produced_chars += to_nchars; | |
6158 | *buf++ = to_nchars; | |
6159 | while (--from_nchars > 0) | |
6160 | *buf++ = 0; | |
d46c5b12 | 6161 | } |
df7492f9 | 6162 | else |
69a80ea3 KH |
6163 | /* This is an annotation datum. (-C) is the length. */ |
6164 | buf += -c; | |
4ed46869 | 6165 | } |
69a80ea3 | 6166 | carryover = buf_end - buf; |
4ed46869 | 6167 | } |
fa42c37f | 6168 | else |
fa42c37f | 6169 | { |
119852e7 | 6170 | /* Source characters are at coding->source. */ |
8f924df7 | 6171 | const unsigned char *src = coding->source; |
119852e7 | 6172 | const unsigned char *src_end = src + coding->consumed; |
4ed46869 | 6173 | |
db274c7a KH |
6174 | if (EQ (coding->dst_object, coding->src_object)) |
6175 | dst_end = (unsigned char *) src; | |
df7492f9 | 6176 | if (coding->src_multibyte != coding->dst_multibyte) |
fa42c37f | 6177 | { |
df7492f9 | 6178 | if (coding->src_multibyte) |
fa42c37f | 6179 | { |
71c81426 | 6180 | int multibytep = 1; |
119852e7 | 6181 | EMACS_INT consumed_chars; |
d46c5b12 | 6182 | |
df7492f9 KH |
6183 | while (1) |
6184 | { | |
8f924df7 | 6185 | const unsigned char *src_base = src; |
df7492f9 | 6186 | int c; |
b73bfc1c | 6187 | |
df7492f9 | 6188 | ONE_MORE_BYTE (c); |
119852e7 | 6189 | if (dst == dst_end) |
df7492f9 | 6190 | { |
119852e7 KH |
6191 | if (EQ (coding->src_object, coding->dst_object)) |
6192 | dst_end = (unsigned char *) src; | |
6193 | if (dst == dst_end) | |
df7492f9 | 6194 | { |
119852e7 KH |
6195 | EMACS_INT offset = src - coding->source; |
6196 | ||
6197 | dst = alloc_destination (coding, src_end - src + 1, | |
6198 | dst); | |
6199 | dst_end = coding->destination + coding->dst_bytes; | |
6200 | coding_set_source (coding); | |
6201 | src = coding->source + offset; | |
6202 | src_end = coding->source + coding->src_bytes; | |
db274c7a KH |
6203 | if (EQ (coding->src_object, coding->dst_object)) |
6204 | dst_end = (unsigned char *) src; | |
df7492f9 | 6205 | } |
df7492f9 KH |
6206 | } |
6207 | *dst++ = c; | |
6208 | produced_chars++; | |
6209 | } | |
6210 | no_more_source: | |
6211 | ; | |
fa42c37f KH |
6212 | } |
6213 | else | |
df7492f9 KH |
6214 | while (src < src_end) |
6215 | { | |
71c81426 | 6216 | int multibytep = 1; |
df7492f9 | 6217 | int c = *src++; |
b73bfc1c | 6218 | |
df7492f9 KH |
6219 | if (dst >= dst_end - 1) |
6220 | { | |
2c78b7e1 | 6221 | if (EQ (coding->src_object, coding->dst_object)) |
8f924df7 | 6222 | dst_end = (unsigned char *) src; |
2c78b7e1 KH |
6223 | if (dst >= dst_end - 1) |
6224 | { | |
119852e7 | 6225 | EMACS_INT offset = src - coding->source; |
db274c7a | 6226 | EMACS_INT more_bytes; |
119852e7 | 6227 | |
db274c7a KH |
6228 | if (EQ (coding->src_object, coding->dst_object)) |
6229 | more_bytes = ((src_end - src) / 2) + 2; | |
6230 | else | |
6231 | more_bytes = src_end - src + 2; | |
6232 | dst = alloc_destination (coding, more_bytes, dst); | |
2c78b7e1 KH |
6233 | dst_end = coding->destination + coding->dst_bytes; |
6234 | coding_set_source (coding); | |
119852e7 | 6235 | src = coding->source + offset; |
2c78b7e1 | 6236 | src_end = coding->source + coding->src_bytes; |
db274c7a KH |
6237 | if (EQ (coding->src_object, coding->dst_object)) |
6238 | dst_end = (unsigned char *) src; | |
2c78b7e1 | 6239 | } |
df7492f9 KH |
6240 | } |
6241 | EMIT_ONE_BYTE (c); | |
6242 | } | |
d46c5b12 | 6243 | } |
df7492f9 KH |
6244 | else |
6245 | { | |
6246 | if (!EQ (coding->src_object, coding->dst_object)) | |
fa42c37f | 6247 | { |
119852e7 | 6248 | EMACS_INT require = coding->src_bytes - coding->dst_bytes; |
4ed46869 | 6249 | |
df7492f9 | 6250 | if (require > 0) |
fa42c37f | 6251 | { |
df7492f9 KH |
6252 | EMACS_INT offset = src - coding->source; |
6253 | ||
6254 | dst = alloc_destination (coding, require, dst); | |
6255 | coding_set_source (coding); | |
6256 | src = coding->source + offset; | |
6257 | src_end = coding->source + coding->src_bytes; | |
fa42c37f KH |
6258 | } |
6259 | } | |
119852e7 | 6260 | produced_chars = coding->consumed_char; |
df7492f9 | 6261 | while (src < src_end) |
14daee73 | 6262 | *dst++ = *src++; |
fa42c37f KH |
6263 | } |
6264 | } | |
6265 | ||
df7492f9 | 6266 | produced = dst - (coding->destination + coding->produced); |
284201e4 | 6267 | if (BUFFERP (coding->dst_object) && produced_chars > 0) |
df7492f9 KH |
6268 | insert_from_gap (produced_chars, produced); |
6269 | coding->produced += produced; | |
6270 | coding->produced_char += produced_chars; | |
69a80ea3 | 6271 | return carryover; |
fa42c37f KH |
6272 | } |
6273 | ||
ff0dacd7 KH |
6274 | /* Compose text in CODING->object according to the annotation data at |
6275 | CHARBUF. CHARBUF is an array: | |
6276 | [ -LENGTH ANNOTATION_MASK FROM TO METHOD COMP_LEN [ COMPONENTS... ] ] | |
df7492f9 | 6277 | */ |
4ed46869 | 6278 | |
df7492f9 | 6279 | static INLINE void |
69a80ea3 | 6280 | produce_composition (coding, charbuf, pos) |
4ed46869 | 6281 | struct coding_system *coding; |
df7492f9 | 6282 | int *charbuf; |
69a80ea3 | 6283 | EMACS_INT pos; |
4ed46869 | 6284 | { |
df7492f9 | 6285 | int len; |
69a80ea3 | 6286 | EMACS_INT to; |
df7492f9 | 6287 | enum composition_method method; |
df7492f9 | 6288 | Lisp_Object components; |
fa42c37f | 6289 | |
df7492f9 | 6290 | len = -charbuf[0]; |
69a80ea3 | 6291 | to = pos + charbuf[2]; |
9ffd559c KH |
6292 | if (to <= pos) |
6293 | return; | |
69a80ea3 | 6294 | method = (enum composition_method) (charbuf[3]); |
d46c5b12 | 6295 | |
df7492f9 KH |
6296 | if (method == COMPOSITION_RELATIVE) |
6297 | components = Qnil; | |
9ffd559c KH |
6298 | else if (method >= COMPOSITION_WITH_RULE |
6299 | && method <= COMPOSITION_WITH_RULE_ALTCHARS) | |
d46c5b12 | 6300 | { |
df7492f9 KH |
6301 | Lisp_Object args[MAX_COMPOSITION_COMPONENTS * 2 - 1]; |
6302 | int i; | |
b73bfc1c | 6303 | |
69a80ea3 KH |
6304 | len -= 4; |
6305 | charbuf += 4; | |
df7492f9 | 6306 | for (i = 0; i < len; i++) |
9ffd559c KH |
6307 | { |
6308 | args[i] = make_number (charbuf[i]); | |
f75c90a9 | 6309 | if (charbuf[i] < 0) |
9ffd559c KH |
6310 | return; |
6311 | } | |
df7492f9 KH |
6312 | components = (method == COMPOSITION_WITH_ALTCHARS |
6313 | ? Fstring (len, args) : Fvector (len, args)); | |
d46c5b12 | 6314 | } |
9ffd559c KH |
6315 | else |
6316 | return; | |
69a80ea3 | 6317 | compose_text (pos, to, components, Qnil, coding->dst_object); |
d46c5b12 KH |
6318 | } |
6319 | ||
d46c5b12 | 6320 | |
ff0dacd7 KH |
6321 | /* Put `charset' property on text in CODING->object according to |
6322 | the annotation data at CHARBUF. CHARBUF is an array: | |
69a80ea3 | 6323 | [ -LENGTH ANNOTATION_MASK NCHARS CHARSET-ID ] |
ff0dacd7 | 6324 | */ |
d46c5b12 | 6325 | |
ff0dacd7 | 6326 | static INLINE void |
69a80ea3 | 6327 | produce_charset (coding, charbuf, pos) |
d46c5b12 | 6328 | struct coding_system *coding; |
ff0dacd7 | 6329 | int *charbuf; |
69a80ea3 | 6330 | EMACS_INT pos; |
d46c5b12 | 6331 | { |
69a80ea3 KH |
6332 | EMACS_INT from = pos - charbuf[2]; |
6333 | struct charset *charset = CHARSET_FROM_ID (charbuf[3]); | |
b73bfc1c | 6334 | |
69a80ea3 | 6335 | Fput_text_property (make_number (from), make_number (pos), |
ff0dacd7 KH |
6336 | Qcharset, CHARSET_NAME (charset), |
6337 | coding->dst_object); | |
d46c5b12 KH |
6338 | } |
6339 | ||
d46c5b12 | 6340 | |
df7492f9 KH |
6341 | #define CHARBUF_SIZE 0x4000 |
6342 | ||
6343 | #define ALLOC_CONVERSION_WORK_AREA(coding) \ | |
6344 | do { \ | |
6345 | int size = CHARBUF_SIZE;; \ | |
6346 | \ | |
6347 | coding->charbuf = NULL; \ | |
6348 | while (size > 1024) \ | |
6349 | { \ | |
6350 | coding->charbuf = (int *) alloca (sizeof (int) * size); \ | |
6351 | if (coding->charbuf) \ | |
6352 | break; \ | |
6353 | size >>= 1; \ | |
6354 | } \ | |
6355 | if (! coding->charbuf) \ | |
6356 | { \ | |
065e3595 | 6357 | record_conversion_result (coding, CODING_RESULT_INSUFFICIENT_MEM); \ |
df7492f9 KH |
6358 | return coding->result; \ |
6359 | } \ | |
6360 | coding->charbuf_size = size; \ | |
6361 | } while (0) | |
4ed46869 | 6362 | |
d46c5b12 KH |
6363 | |
6364 | static void | |
69a80ea3 | 6365 | produce_annotation (coding, pos) |
d46c5b12 | 6366 | struct coding_system *coding; |
69a80ea3 | 6367 | EMACS_INT pos; |
d46c5b12 | 6368 | { |
df7492f9 KH |
6369 | int *charbuf = coding->charbuf; |
6370 | int *charbuf_end = charbuf + coding->charbuf_used; | |
d46c5b12 | 6371 | |
ff0dacd7 KH |
6372 | if (NILP (coding->dst_object)) |
6373 | return; | |
d46c5b12 | 6374 | |
df7492f9 | 6375 | while (charbuf < charbuf_end) |
a84f1519 | 6376 | { |
df7492f9 | 6377 | if (*charbuf >= 0) |
69a80ea3 | 6378 | pos += *charbuf++; |
d46c5b12 | 6379 | else |
d46c5b12 | 6380 | { |
df7492f9 | 6381 | int len = -*charbuf; |
ff0dacd7 | 6382 | switch (charbuf[1]) |
df7492f9 KH |
6383 | { |
6384 | case CODING_ANNOTATE_COMPOSITION_MASK: | |
69a80ea3 | 6385 | produce_composition (coding, charbuf, pos); |
df7492f9 | 6386 | break; |
ff0dacd7 | 6387 | case CODING_ANNOTATE_CHARSET_MASK: |
69a80ea3 | 6388 | produce_charset (coding, charbuf, pos); |
ff0dacd7 | 6389 | break; |
df7492f9 KH |
6390 | default: |
6391 | abort (); | |
6392 | } | |
6393 | charbuf += len; | |
d46c5b12 | 6394 | } |
a84f1519 | 6395 | } |
d46c5b12 KH |
6396 | } |
6397 | ||
df7492f9 KH |
6398 | /* Decode the data at CODING->src_object into CODING->dst_object. |
6399 | CODING->src_object is a buffer, a string, or nil. | |
6400 | CODING->dst_object is a buffer. | |
d46c5b12 | 6401 | |
df7492f9 KH |
6402 | If CODING->src_object is a buffer, it must be the current buffer. |
6403 | In this case, if CODING->src_pos is positive, it is a position of | |
6404 | the source text in the buffer, otherwise, the source text is in the | |
6405 | gap area of the buffer, and CODING->src_pos specifies the offset of | |
6406 | the text from GPT (which must be the same as PT). If this is the | |
6407 | same buffer as CODING->dst_object, CODING->src_pos must be | |
6408 | negative. | |
d46c5b12 | 6409 | |
b6828792 | 6410 | If CODING->src_object is a string, CODING->src_pos is an index to |
df7492f9 | 6411 | that string. |
d46c5b12 | 6412 | |
df7492f9 KH |
6413 | If CODING->src_object is nil, CODING->source must already point to |
6414 | the non-relocatable memory area. In this case, CODING->src_pos is | |
6415 | an offset from CODING->source. | |
73be902c | 6416 | |
df7492f9 KH |
6417 | The decoded data is inserted at the current point of the buffer |
6418 | CODING->dst_object. | |
6419 | */ | |
d46c5b12 | 6420 | |
df7492f9 KH |
6421 | static int |
6422 | decode_coding (coding) | |
d46c5b12 | 6423 | struct coding_system *coding; |
d46c5b12 | 6424 | { |
df7492f9 | 6425 | Lisp_Object attrs; |
24a73b0a | 6426 | Lisp_Object undo_list; |
7d64c6ad | 6427 | Lisp_Object translation_table; |
69a80ea3 KH |
6428 | int carryover; |
6429 | int i; | |
d46c5b12 | 6430 | |
df7492f9 KH |
6431 | if (BUFFERP (coding->src_object) |
6432 | && coding->src_pos > 0 | |
6433 | && coding->src_pos < GPT | |
6434 | && coding->src_pos + coding->src_chars > GPT) | |
6435 | move_gap_both (coding->src_pos, coding->src_pos_byte); | |
d46c5b12 | 6436 | |
24a73b0a | 6437 | undo_list = Qt; |
df7492f9 | 6438 | if (BUFFERP (coding->dst_object)) |
1c3478b0 | 6439 | { |
df7492f9 KH |
6440 | if (current_buffer != XBUFFER (coding->dst_object)) |
6441 | set_buffer_internal (XBUFFER (coding->dst_object)); | |
6442 | if (GPT != PT) | |
6443 | move_gap_both (PT, PT_BYTE); | |
24a73b0a KH |
6444 | undo_list = current_buffer->undo_list; |
6445 | current_buffer->undo_list = Qt; | |
1c3478b0 KH |
6446 | } |
6447 | ||
df7492f9 KH |
6448 | coding->consumed = coding->consumed_char = 0; |
6449 | coding->produced = coding->produced_char = 0; | |
6450 | coding->chars_at_source = 0; | |
065e3595 | 6451 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
df7492f9 | 6452 | coding->errors = 0; |
1c3478b0 | 6453 | |
df7492f9 KH |
6454 | ALLOC_CONVERSION_WORK_AREA (coding); |
6455 | ||
6456 | attrs = CODING_ID_ATTRS (coding->id); | |
2170c8f0 | 6457 | translation_table = get_translation_table (attrs, 0, NULL); |
df7492f9 | 6458 | |
69a80ea3 | 6459 | carryover = 0; |
df7492f9 | 6460 | do |
b73bfc1c | 6461 | { |
69a80ea3 KH |
6462 | EMACS_INT pos = coding->dst_pos + coding->produced_char; |
6463 | ||
df7492f9 KH |
6464 | coding_set_source (coding); |
6465 | coding->annotated = 0; | |
69a80ea3 | 6466 | coding->charbuf_used = carryover; |
df7492f9 | 6467 | (*(coding->decoder)) (coding); |
df7492f9 | 6468 | coding_set_destination (coding); |
69a80ea3 | 6469 | carryover = produce_chars (coding, translation_table, 0); |
df7492f9 | 6470 | if (coding->annotated) |
69a80ea3 KH |
6471 | produce_annotation (coding, pos); |
6472 | for (i = 0; i < carryover; i++) | |
6473 | coding->charbuf[i] | |
6474 | = coding->charbuf[coding->charbuf_used - carryover + i]; | |
d46c5b12 | 6475 | } |
df7492f9 | 6476 | while (coding->consumed < coding->src_bytes |
54b367bb KH |
6477 | && (coding->result == CODING_RESULT_SUCCESS |
6478 | || coding->result == CODING_RESULT_INVALID_SRC)); | |
d46c5b12 | 6479 | |
69a80ea3 KH |
6480 | if (carryover > 0) |
6481 | { | |
6482 | coding_set_destination (coding); | |
6483 | coding->charbuf_used = carryover; | |
6484 | produce_chars (coding, translation_table, 1); | |
6485 | } | |
6486 | ||
df7492f9 KH |
6487 | coding->carryover_bytes = 0; |
6488 | if (coding->consumed < coding->src_bytes) | |
d46c5b12 | 6489 | { |
df7492f9 | 6490 | int nbytes = coding->src_bytes - coding->consumed; |
8f924df7 | 6491 | const unsigned char *src; |
df7492f9 KH |
6492 | |
6493 | coding_set_source (coding); | |
6494 | coding_set_destination (coding); | |
6495 | src = coding->source + coding->consumed; | |
6496 | ||
6497 | if (coding->mode & CODING_MODE_LAST_BLOCK) | |
1c3478b0 | 6498 | { |
df7492f9 KH |
6499 | /* Flush out unprocessed data as binary chars. We are sure |
6500 | that the number of data is less than the size of | |
6501 | coding->charbuf. */ | |
065e3595 | 6502 | coding->charbuf_used = 0; |
df7492f9 | 6503 | while (nbytes-- > 0) |
1c3478b0 | 6504 | { |
df7492f9 | 6505 | int c = *src++; |
98725083 | 6506 | |
1c91457d KH |
6507 | if (c & 0x80) |
6508 | c = BYTE8_TO_CHAR (c); | |
6509 | coding->charbuf[coding->charbuf_used++] = c; | |
1c3478b0 | 6510 | } |
f6cbaf43 | 6511 | produce_chars (coding, Qnil, 1); |
d46c5b12 | 6512 | } |
d46c5b12 | 6513 | else |
df7492f9 KH |
6514 | { |
6515 | /* Record unprocessed bytes in coding->carryover. We are | |
6516 | sure that the number of data is less than the size of | |
6517 | coding->carryover. */ | |
6518 | unsigned char *p = coding->carryover; | |
6519 | ||
6520 | coding->carryover_bytes = nbytes; | |
6521 | while (nbytes-- > 0) | |
6522 | *p++ = *src++; | |
1c3478b0 | 6523 | } |
df7492f9 | 6524 | coding->consumed = coding->src_bytes; |
b73bfc1c | 6525 | } |
69f76525 | 6526 | |
4347441b KH |
6527 | if (! EQ (CODING_ID_EOL_TYPE (coding->id), Qunix)) |
6528 | decode_eol (coding); | |
24a73b0a KH |
6529 | if (BUFFERP (coding->dst_object)) |
6530 | { | |
6531 | current_buffer->undo_list = undo_list; | |
6532 | record_insert (coding->dst_pos, coding->produced_char); | |
6533 | } | |
73be902c | 6534 | return coding->result; |
4ed46869 KH |
6535 | } |
6536 | ||
aaaf0b1e | 6537 | |
e1c23804 | 6538 | /* Extract an annotation datum from a composition starting at POS and |
ff0dacd7 KH |
6539 | ending before LIMIT of CODING->src_object (buffer or string), store |
6540 | the data in BUF, set *STOP to a starting position of the next | |
6541 | composition (if any) or to LIMIT, and return the address of the | |
6542 | next element of BUF. | |
6543 | ||
6544 | If such an annotation is not found, set *STOP to a starting | |
6545 | position of a composition after POS (if any) or to LIMIT, and | |
6546 | return BUF. */ | |
6547 | ||
6548 | static INLINE int * | |
6549 | handle_composition_annotation (pos, limit, coding, buf, stop) | |
6550 | EMACS_INT pos, limit; | |
aaaf0b1e | 6551 | struct coding_system *coding; |
ff0dacd7 KH |
6552 | int *buf; |
6553 | EMACS_INT *stop; | |
aaaf0b1e | 6554 | { |
ff0dacd7 KH |
6555 | EMACS_INT start, end; |
6556 | Lisp_Object prop; | |
aaaf0b1e | 6557 | |
ff0dacd7 KH |
6558 | if (! find_composition (pos, limit, &start, &end, &prop, coding->src_object) |
6559 | || end > limit) | |
6560 | *stop = limit; | |
6561 | else if (start > pos) | |
6562 | *stop = start; | |
6563 | else | |
aaaf0b1e | 6564 | { |
ff0dacd7 | 6565 | if (start == pos) |
aaaf0b1e | 6566 | { |
ff0dacd7 KH |
6567 | /* We found a composition. Store the corresponding |
6568 | annotation data in BUF. */ | |
6569 | int *head = buf; | |
6570 | enum composition_method method = COMPOSITION_METHOD (prop); | |
6571 | int nchars = COMPOSITION_LENGTH (prop); | |
6572 | ||
69a80ea3 | 6573 | ADD_COMPOSITION_DATA (buf, nchars, method); |
ff0dacd7 | 6574 | if (method != COMPOSITION_RELATIVE) |
aaaf0b1e | 6575 | { |
ff0dacd7 KH |
6576 | Lisp_Object components; |
6577 | int len, i, i_byte; | |
6578 | ||
6579 | components = COMPOSITION_COMPONENTS (prop); | |
6580 | if (VECTORP (components)) | |
aaaf0b1e | 6581 | { |
ff0dacd7 KH |
6582 | len = XVECTOR (components)->size; |
6583 | for (i = 0; i < len; i++) | |
6584 | *buf++ = XINT (AREF (components, i)); | |
aaaf0b1e | 6585 | } |
ff0dacd7 | 6586 | else if (STRINGP (components)) |
aaaf0b1e | 6587 | { |
8f924df7 | 6588 | len = SCHARS (components); |
ff0dacd7 KH |
6589 | i = i_byte = 0; |
6590 | while (i < len) | |
6591 | { | |
6592 | FETCH_STRING_CHAR_ADVANCE (*buf, components, i, i_byte); | |
6593 | buf++; | |
6594 | } | |
6595 | } | |
6596 | else if (INTEGERP (components)) | |
6597 | { | |
6598 | len = 1; | |
6599 | *buf++ = XINT (components); | |
6600 | } | |
6601 | else if (CONSP (components)) | |
6602 | { | |
6603 | for (len = 0; CONSP (components); | |
6604 | len++, components = XCDR (components)) | |
6605 | *buf++ = XINT (XCAR (components)); | |
aaaf0b1e | 6606 | } |
aaaf0b1e | 6607 | else |
ff0dacd7 KH |
6608 | abort (); |
6609 | *head -= len; | |
aaaf0b1e | 6610 | } |
aaaf0b1e | 6611 | } |
ff0dacd7 KH |
6612 | |
6613 | if (find_composition (end, limit, &start, &end, &prop, | |
6614 | coding->src_object) | |
6615 | && end <= limit) | |
6616 | *stop = start; | |
6617 | else | |
6618 | *stop = limit; | |
aaaf0b1e | 6619 | } |
ff0dacd7 KH |
6620 | return buf; |
6621 | } | |
6622 | ||
6623 | ||
e1c23804 | 6624 | /* Extract an annotation datum from a text property `charset' at POS of |
ff0dacd7 KH |
6625 | CODING->src_object (buffer of string), store the data in BUF, set |
6626 | *STOP to the position where the value of `charset' property changes | |
6627 | (limiting by LIMIT), and return the address of the next element of | |
6628 | BUF. | |
6629 | ||
6630 | If the property value is nil, set *STOP to the position where the | |
6631 | property value is non-nil (limiting by LIMIT), and return BUF. */ | |
6632 | ||
6633 | static INLINE int * | |
6634 | handle_charset_annotation (pos, limit, coding, buf, stop) | |
6635 | EMACS_INT pos, limit; | |
6636 | struct coding_system *coding; | |
6637 | int *buf; | |
6638 | EMACS_INT *stop; | |
6639 | { | |
6640 | Lisp_Object val, next; | |
6641 | int id; | |
6642 | ||
6643 | val = Fget_text_property (make_number (pos), Qcharset, coding->src_object); | |
6644 | if (! NILP (val) && CHARSETP (val)) | |
6645 | id = XINT (CHARSET_SYMBOL_ID (val)); | |
6646 | else | |
6647 | id = -1; | |
69a80ea3 | 6648 | ADD_CHARSET_DATA (buf, 0, id); |
ff0dacd7 KH |
6649 | next = Fnext_single_property_change (make_number (pos), Qcharset, |
6650 | coding->src_object, | |
6651 | make_number (limit)); | |
6652 | *stop = XINT (next); | |
6653 | return buf; | |
6654 | } | |
6655 | ||
6656 | ||
df7492f9 | 6657 | static void |
09ee6fdd | 6658 | consume_chars (coding, translation_table, max_lookup) |
df7492f9 | 6659 | struct coding_system *coding; |
433f7f87 | 6660 | Lisp_Object translation_table; |
09ee6fdd | 6661 | int max_lookup; |
df7492f9 KH |
6662 | { |
6663 | int *buf = coding->charbuf; | |
ff0dacd7 | 6664 | int *buf_end = coding->charbuf + coding->charbuf_size; |
7c78e542 | 6665 | const unsigned char *src = coding->source + coding->consumed; |
4776e638 | 6666 | const unsigned char *src_end = coding->source + coding->src_bytes; |
ff0dacd7 KH |
6667 | EMACS_INT pos = coding->src_pos + coding->consumed_char; |
6668 | EMACS_INT end_pos = coding->src_pos + coding->src_chars; | |
df7492f9 KH |
6669 | int multibytep = coding->src_multibyte; |
6670 | Lisp_Object eol_type; | |
6671 | int c; | |
ff0dacd7 | 6672 | EMACS_INT stop, stop_composition, stop_charset; |
09ee6fdd | 6673 | int *lookup_buf = NULL; |
433f7f87 KH |
6674 | |
6675 | if (! NILP (translation_table)) | |
09ee6fdd | 6676 | lookup_buf = alloca (sizeof (int) * max_lookup); |
88993dfd | 6677 | |
df7492f9 KH |
6678 | eol_type = CODING_ID_EOL_TYPE (coding->id); |
6679 | if (VECTORP (eol_type)) | |
6680 | eol_type = Qunix; | |
88993dfd | 6681 | |
df7492f9 KH |
6682 | /* Note: composition handling is not yet implemented. */ |
6683 | coding->common_flags &= ~CODING_ANNOTATE_COMPOSITION_MASK; | |
ec6d2bb8 | 6684 | |
0b5670c9 KH |
6685 | if (NILP (coding->src_object)) |
6686 | stop = stop_composition = stop_charset = end_pos; | |
ff0dacd7 | 6687 | else |
0b5670c9 KH |
6688 | { |
6689 | if (coding->common_flags & CODING_ANNOTATE_COMPOSITION_MASK) | |
6690 | stop = stop_composition = pos; | |
6691 | else | |
6692 | stop = stop_composition = end_pos; | |
6693 | if (coding->common_flags & CODING_ANNOTATE_CHARSET_MASK) | |
6694 | stop = stop_charset = pos; | |
6695 | else | |
6696 | stop_charset = end_pos; | |
6697 | } | |
ec6d2bb8 | 6698 | |
24a73b0a | 6699 | /* Compensate for CRLF and conversion. */ |
ff0dacd7 | 6700 | buf_end -= 1 + MAX_ANNOTATION_LENGTH; |
df7492f9 | 6701 | while (buf < buf_end) |
aaaf0b1e | 6702 | { |
433f7f87 KH |
6703 | Lisp_Object trans; |
6704 | ||
df7492f9 | 6705 | if (pos == stop) |
ec6d2bb8 | 6706 | { |
df7492f9 KH |
6707 | if (pos == end_pos) |
6708 | break; | |
ff0dacd7 KH |
6709 | if (pos == stop_composition) |
6710 | buf = handle_composition_annotation (pos, end_pos, coding, | |
6711 | buf, &stop_composition); | |
6712 | if (pos == stop_charset) | |
6713 | buf = handle_charset_annotation (pos, end_pos, coding, | |
6714 | buf, &stop_charset); | |
6715 | stop = (stop_composition < stop_charset | |
6716 | ? stop_composition : stop_charset); | |
df7492f9 KH |
6717 | } |
6718 | ||
6719 | if (! multibytep) | |
4776e638 | 6720 | { |
d3e4cb56 | 6721 | EMACS_INT bytes; |
aaaf0b1e | 6722 | |
ea29edf2 KH |
6723 | if (coding->encoder == encode_coding_raw_text) |
6724 | c = *src++, pos++; | |
6725 | else if ((bytes = MULTIBYTE_LENGTH (src, src_end)) > 0) | |
db274c7a | 6726 | c = STRING_CHAR_ADVANCE_NO_UNIFY (src), pos += bytes; |
4776e638 | 6727 | else |
f03caae0 | 6728 | c = BYTE8_TO_CHAR (*src), src++, pos++; |
4776e638 | 6729 | } |
df7492f9 | 6730 | else |
db274c7a | 6731 | c = STRING_CHAR_ADVANCE_NO_UNIFY (src), pos++; |
df7492f9 KH |
6732 | if ((c == '\r') && (coding->mode & CODING_MODE_SELECTIVE_DISPLAY)) |
6733 | c = '\n'; | |
6734 | if (! EQ (eol_type, Qunix)) | |
aaaf0b1e | 6735 | { |
df7492f9 | 6736 | if (c == '\n') |
aaaf0b1e | 6737 | { |
df7492f9 KH |
6738 | if (EQ (eol_type, Qdos)) |
6739 | *buf++ = '\r'; | |
6740 | else | |
6741 | c = '\r'; | |
aaaf0b1e KH |
6742 | } |
6743 | } | |
433f7f87 | 6744 | |
e6a54062 | 6745 | trans = Qnil; |
09ee6fdd | 6746 | LOOKUP_TRANSLATION_TABLE (translation_table, c, trans); |
e6a54062 | 6747 | if (NILP (trans)) |
433f7f87 KH |
6748 | *buf++ = c; |
6749 | else | |
6750 | { | |
6751 | int from_nchars = 1, to_nchars = 1; | |
6752 | int *lookup_buf_end; | |
6753 | const unsigned char *p = src; | |
6754 | int i; | |
6755 | ||
6756 | lookup_buf[0] = c; | |
6757 | for (i = 1; i < max_lookup && p < src_end; i++) | |
6758 | lookup_buf[i] = STRING_CHAR_ADVANCE (p); | |
6759 | lookup_buf_end = lookup_buf + i; | |
6760 | trans = get_translation (trans, lookup_buf, lookup_buf_end, 1, | |
6761 | &from_nchars, &to_nchars); | |
6762 | if (EQ (trans, Qt) | |
6763 | || buf + to_nchars > buf_end) | |
6764 | break; | |
6765 | *buf++ = *lookup_buf; | |
6766 | for (i = 1; i < to_nchars; i++) | |
6767 | *buf++ = XINT (AREF (trans, i)); | |
6768 | for (i = 1; i < from_nchars; i++, pos++) | |
6769 | src += MULTIBYTE_LENGTH_NO_CHECK (src); | |
6770 | } | |
aaaf0b1e | 6771 | } |
ec6d2bb8 | 6772 | |
df7492f9 KH |
6773 | coding->consumed = src - coding->source; |
6774 | coding->consumed_char = pos - coding->src_pos; | |
6775 | coding->charbuf_used = buf - coding->charbuf; | |
6776 | coding->chars_at_source = 0; | |
aaaf0b1e KH |
6777 | } |
6778 | ||
4ed46869 | 6779 | |
df7492f9 KH |
6780 | /* Encode the text at CODING->src_object into CODING->dst_object. |
6781 | CODING->src_object is a buffer or a string. | |
6782 | CODING->dst_object is a buffer or nil. | |
6783 | ||
6784 | If CODING->src_object is a buffer, it must be the current buffer. | |
6785 | In this case, if CODING->src_pos is positive, it is a position of | |
6786 | the source text in the buffer, otherwise. the source text is in the | |
6787 | gap area of the buffer, and coding->src_pos specifies the offset of | |
6788 | the text from GPT (which must be the same as PT). If this is the | |
6789 | same buffer as CODING->dst_object, CODING->src_pos must be | |
6790 | negative and CODING should not have `pre-write-conversion'. | |
6791 | ||
6792 | If CODING->src_object is a string, CODING should not have | |
6793 | `pre-write-conversion'. | |
6794 | ||
6795 | If CODING->dst_object is a buffer, the encoded data is inserted at | |
6796 | the current point of that buffer. | |
6797 | ||
6798 | If CODING->dst_object is nil, the encoded data is placed at the | |
6799 | memory area specified by CODING->destination. */ | |
6800 | ||
6801 | static int | |
6802 | encode_coding (coding) | |
4ed46869 | 6803 | struct coding_system *coding; |
4ed46869 | 6804 | { |
df7492f9 | 6805 | Lisp_Object attrs; |
7d64c6ad | 6806 | Lisp_Object translation_table; |
09ee6fdd | 6807 | int max_lookup; |
9861e777 | 6808 | |
df7492f9 | 6809 | attrs = CODING_ID_ATTRS (coding->id); |
ea29edf2 KH |
6810 | if (coding->encoder == encode_coding_raw_text) |
6811 | translation_table = Qnil, max_lookup = 0; | |
6812 | else | |
6813 | translation_table = get_translation_table (attrs, 1, &max_lookup); | |
4ed46869 | 6814 | |
df7492f9 | 6815 | if (BUFFERP (coding->dst_object)) |
8844fa83 | 6816 | { |
df7492f9 KH |
6817 | set_buffer_internal (XBUFFER (coding->dst_object)); |
6818 | coding->dst_multibyte | |
6819 | = ! NILP (current_buffer->enable_multibyte_characters); | |
8844fa83 | 6820 | } |
4ed46869 | 6821 | |
b73bfc1c | 6822 | coding->consumed = coding->consumed_char = 0; |
df7492f9 | 6823 | coding->produced = coding->produced_char = 0; |
065e3595 | 6824 | record_conversion_result (coding, CODING_RESULT_SUCCESS); |
b73bfc1c | 6825 | coding->errors = 0; |
b73bfc1c | 6826 | |
df7492f9 | 6827 | ALLOC_CONVERSION_WORK_AREA (coding); |
4ed46869 | 6828 | |
df7492f9 KH |
6829 | do { |
6830 | coding_set_source (coding); | |
09ee6fdd | 6831 | consume_chars (coding, translation_table, max_lookup); |
df7492f9 KH |
6832 | coding_set_destination (coding); |
6833 | (*(coding->encoder)) (coding); | |
6834 | } while (coding->consumed_char < coding->src_chars); | |
6835 | ||
284201e4 | 6836 | if (BUFFERP (coding->dst_object) && coding->produced_char > 0) |
df7492f9 KH |
6837 | insert_from_gap (coding->produced_char, coding->produced); |
6838 | ||
6839 | return (coding->result); | |
ec6d2bb8 KH |
6840 | } |
6841 | ||
fb88bf2d | 6842 | |
24a73b0a KH |
6843 | /* Name (or base name) of work buffer for code conversion. */ |
6844 | static Lisp_Object Vcode_conversion_workbuf_name; | |
d46c5b12 | 6845 | |
24a73b0a KH |
6846 | /* A working buffer used by the top level conversion. Once it is |
6847 | created, it is never destroyed. It has the name | |
6848 | Vcode_conversion_workbuf_name. The other working buffers are | |
6849 | destroyed after the use is finished, and their names are modified | |
6850 | versions of Vcode_conversion_workbuf_name. */ | |
6851 | static Lisp_Object Vcode_conversion_reused_workbuf; | |
b73bfc1c | 6852 | |
24a73b0a KH |
6853 | /* 1 iff Vcode_conversion_reused_workbuf is already in use. */ |
6854 | static int reused_workbuf_in_use; | |
4ed46869 | 6855 | |
24a73b0a KH |
6856 | |
6857 | /* Return a working buffer of code convesion. MULTIBYTE specifies the | |
6858 | multibyteness of returning buffer. */ | |
b73bfc1c | 6859 | |
f6cbaf43 | 6860 | static Lisp_Object |
24a73b0a | 6861 | make_conversion_work_buffer (multibyte) |
f6cbaf43 | 6862 | int multibyte; |
df7492f9 | 6863 | { |
24a73b0a KH |
6864 | Lisp_Object name, workbuf; |
6865 | struct buffer *current; | |
4ed46869 | 6866 | |
24a73b0a | 6867 | if (reused_workbuf_in_use++) |
065e3595 KH |
6868 | { |
6869 | name = Fgenerate_new_buffer_name (Vcode_conversion_workbuf_name, Qnil); | |
6870 | workbuf = Fget_buffer_create (name); | |
6871 | } | |
df7492f9 | 6872 | else |
065e3595 KH |
6873 | { |
6874 | name = Vcode_conversion_workbuf_name; | |
6875 | workbuf = Fget_buffer_create (name); | |
6876 | if (NILP (Vcode_conversion_reused_workbuf)) | |
6877 | Vcode_conversion_reused_workbuf = workbuf; | |
6878 | } | |
24a73b0a KH |
6879 | current = current_buffer; |
6880 | set_buffer_internal (XBUFFER (workbuf)); | |
6881 | Ferase_buffer (); | |
df7492f9 | 6882 | current_buffer->undo_list = Qt; |
24a73b0a | 6883 | current_buffer->enable_multibyte_characters = multibyte ? Qt : Qnil; |
df7492f9 | 6884 | set_buffer_internal (current); |
24a73b0a | 6885 | return workbuf; |
df7492f9 | 6886 | } |
d46c5b12 | 6887 | |
24a73b0a | 6888 | |
4776e638 | 6889 | static Lisp_Object |
24a73b0a KH |
6890 | code_conversion_restore (arg) |
6891 | Lisp_Object arg; | |
4776e638 | 6892 | { |
24a73b0a | 6893 | Lisp_Object current, workbuf; |
948bdcf3 | 6894 | struct gcpro gcpro1; |
24a73b0a | 6895 | |
948bdcf3 | 6896 | GCPRO1 (arg); |
24a73b0a KH |
6897 | current = XCAR (arg); |
6898 | workbuf = XCDR (arg); | |
6899 | if (! NILP (workbuf)) | |
6900 | { | |
6901 | if (EQ (workbuf, Vcode_conversion_reused_workbuf)) | |
6902 | reused_workbuf_in_use = 0; | |
6903 | else if (! NILP (Fbuffer_live_p (workbuf))) | |
6904 | Fkill_buffer (workbuf); | |
6905 | } | |
6906 | set_buffer_internal (XBUFFER (current)); | |
948bdcf3 | 6907 | UNGCPRO; |
4776e638 KH |
6908 | return Qnil; |
6909 | } | |
b73bfc1c | 6910 | |
24a73b0a KH |
6911 | Lisp_Object |
6912 | code_conversion_save (with_work_buf, multibyte) | |
4776e638 | 6913 | int with_work_buf, multibyte; |
df7492f9 | 6914 | { |
24a73b0a | 6915 | Lisp_Object workbuf = Qnil; |
b73bfc1c | 6916 | |
4776e638 | 6917 | if (with_work_buf) |
24a73b0a KH |
6918 | workbuf = make_conversion_work_buffer (multibyte); |
6919 | record_unwind_protect (code_conversion_restore, | |
6920 | Fcons (Fcurrent_buffer (), workbuf)); | |
4776e638 | 6921 | return workbuf; |
df7492f9 | 6922 | } |
d46c5b12 | 6923 | |
df7492f9 KH |
6924 | int |
6925 | decode_coding_gap (coding, chars, bytes) | |
6926 | struct coding_system *coding; | |
6927 | EMACS_INT chars, bytes; | |
6928 | { | |
6929 | int count = specpdl_ptr - specpdl; | |
5e5c78be | 6930 | Lisp_Object attrs; |
fb88bf2d | 6931 | |
24a73b0a | 6932 | code_conversion_save (0, 0); |
ec6d2bb8 | 6933 | |
24a73b0a | 6934 | coding->src_object = Fcurrent_buffer (); |
df7492f9 KH |
6935 | coding->src_chars = chars; |
6936 | coding->src_bytes = bytes; | |
6937 | coding->src_pos = -chars; | |
6938 | coding->src_pos_byte = -bytes; | |
6939 | coding->src_multibyte = chars < bytes; | |
24a73b0a | 6940 | coding->dst_object = coding->src_object; |
df7492f9 KH |
6941 | coding->dst_pos = PT; |
6942 | coding->dst_pos_byte = PT_BYTE; | |
71c81426 | 6943 | coding->dst_multibyte = ! NILP (current_buffer->enable_multibyte_characters); |
4ed46869 | 6944 | |
df7492f9 KH |
6945 | if (CODING_REQUIRE_DETECTION (coding)) |
6946 | detect_coding (coding); | |
8f924df7 | 6947 | |
9286b333 | 6948 | coding->mode |= CODING_MODE_LAST_BLOCK; |
287c57d7 | 6949 | current_buffer->text->inhibit_shrinking = 1; |
df7492f9 | 6950 | decode_coding (coding); |
287c57d7 | 6951 | current_buffer->text->inhibit_shrinking = 0; |
d46c5b12 | 6952 | |
5e5c78be KH |
6953 | attrs = CODING_ID_ATTRS (coding->id); |
6954 | if (! NILP (CODING_ATTR_POST_READ (attrs))) | |
b73bfc1c | 6955 | { |
5e5c78be KH |
6956 | EMACS_INT prev_Z = Z, prev_Z_BYTE = Z_BYTE; |
6957 | Lisp_Object val; | |
6958 | ||
6959 | TEMP_SET_PT_BOTH (coding->dst_pos, coding->dst_pos_byte); | |
5e5c78be KH |
6960 | val = call1 (CODING_ATTR_POST_READ (attrs), |
6961 | make_number (coding->produced_char)); | |
5e5c78be KH |
6962 | CHECK_NATNUM (val); |
6963 | coding->produced_char += Z - prev_Z; | |
6964 | coding->produced += Z_BYTE - prev_Z_BYTE; | |
b73bfc1c | 6965 | } |
4ed46869 | 6966 | |
df7492f9 | 6967 | unbind_to (count, Qnil); |
b73bfc1c KH |
6968 | return coding->result; |
6969 | } | |
52d41803 | 6970 | |
4ed46869 | 6971 | int |
df7492f9 | 6972 | encode_coding_gap (coding, chars, bytes) |
4ed46869 | 6973 | struct coding_system *coding; |
df7492f9 | 6974 | EMACS_INT chars, bytes; |
4ed46869 | 6975 | { |
df7492f9 | 6976 | int count = specpdl_ptr - specpdl; |
4ed46869 | 6977 | |
24a73b0a | 6978 | code_conversion_save (0, 0); |
4ed46869 | 6979 | |
24a73b0a | 6980 | coding->src_object = Fcurrent_buffer (); |
df7492f9 KH |
6981 | coding->src_chars = chars; |
6982 | coding->src_bytes = bytes; | |
6983 | coding->src_pos = -chars; | |
6984 | coding->src_pos_byte = -bytes; | |
6985 | coding->src_multibyte = chars < bytes; | |
6986 | coding->dst_object = coding->src_object; | |
6987 | coding->dst_pos = PT; | |
6988 | coding->dst_pos_byte = PT_BYTE; | |
4ed46869 | 6989 | |
df7492f9 | 6990 | encode_coding (coding); |
b73bfc1c | 6991 | |
df7492f9 KH |
6992 | unbind_to (count, Qnil); |
6993 | return coding->result; | |
6994 | } | |
4ed46869 | 6995 | |
d46c5b12 | 6996 | |
df7492f9 KH |
6997 | /* Decode the text in the range FROM/FROM_BYTE and TO/TO_BYTE in |
6998 | SRC_OBJECT into DST_OBJECT by coding context CODING. | |
b73bfc1c | 6999 | |
df7492f9 | 7000 | SRC_OBJECT is a buffer, a string, or Qnil. |
b73bfc1c | 7001 | |
df7492f9 KH |
7002 | If it is a buffer, the text is at point of the buffer. FROM and TO |
7003 | are positions in the buffer. | |
b73bfc1c | 7004 | |
df7492f9 KH |
7005 | If it is a string, the text is at the beginning of the string. |
7006 | FROM and TO are indices to the string. | |
4ed46869 | 7007 | |
df7492f9 KH |
7008 | If it is nil, the text is at coding->source. FROM and TO are |
7009 | indices to coding->source. | |
bb10be8b | 7010 | |
df7492f9 | 7011 | DST_OBJECT is a buffer, Qt, or Qnil. |
4ed46869 | 7012 | |
df7492f9 KH |
7013 | If it is a buffer, the decoded text is inserted at point of the |
7014 | buffer. If the buffer is the same as SRC_OBJECT, the source text | |
7015 | is deleted. | |
4ed46869 | 7016 | |
df7492f9 KH |
7017 | If it is Qt, a string is made from the decoded text, and |
7018 | set in CODING->dst_object. | |
d46c5b12 | 7019 | |
df7492f9 | 7020 | If it is Qnil, the decoded text is stored at CODING->destination. |
2cb26057 | 7021 | The caller must allocate CODING->dst_bytes bytes at |
df7492f9 KH |
7022 | CODING->destination by xmalloc. If the decoded text is longer than |
7023 | CODING->dst_bytes, CODING->destination is relocated by xrealloc. | |
7024 | */ | |
d46c5b12 | 7025 | |
df7492f9 KH |
7026 | void |
7027 | decode_coding_object (coding, src_object, from, from_byte, to, to_byte, | |
7028 | dst_object) | |
d46c5b12 | 7029 | struct coding_system *coding; |
df7492f9 KH |
7030 | Lisp_Object src_object; |
7031 | EMACS_INT from, from_byte, to, to_byte; | |
7032 | Lisp_Object dst_object; | |
d46c5b12 | 7033 | { |
df7492f9 KH |
7034 | int count = specpdl_ptr - specpdl; |
7035 | unsigned char *destination; | |
7036 | EMACS_INT dst_bytes; | |
7037 | EMACS_INT chars = to - from; | |
7038 | EMACS_INT bytes = to_byte - from_byte; | |
7039 | Lisp_Object attrs; | |
4776e638 | 7040 | int saved_pt = -1, saved_pt_byte; |
64cedb0c | 7041 | int need_marker_adjustment = 0; |
b3bfad50 | 7042 | Lisp_Object old_deactivate_mark; |
d46c5b12 | 7043 | |
b3bfad50 | 7044 | old_deactivate_mark = Vdeactivate_mark; |
93dec019 | 7045 | |
df7492f9 | 7046 | if (NILP (dst_object)) |
d46c5b12 | 7047 | { |
df7492f9 KH |
7048 | destination = coding->destination; |
7049 | dst_bytes = coding->dst_bytes; | |
d46c5b12 | 7050 | } |
93dec019 | 7051 | |
df7492f9 KH |
7052 | coding->src_object = src_object; |
7053 | coding->src_chars = chars; | |
7054 | coding->src_bytes = bytes; | |
7055 | coding->src_multibyte = chars < bytes; | |
70ad9fc4 | 7056 | |
df7492f9 | 7057 | if (STRINGP (src_object)) |
d46c5b12 | 7058 | { |
df7492f9 KH |
7059 | coding->src_pos = from; |
7060 | coding->src_pos_byte = from_byte; | |
d46c5b12 | 7061 | } |
df7492f9 | 7062 | else if (BUFFERP (src_object)) |
88993dfd | 7063 | { |
df7492f9 KH |
7064 | set_buffer_internal (XBUFFER (src_object)); |
7065 | if (from != GPT) | |
7066 | move_gap_both (from, from_byte); | |
7067 | if (EQ (src_object, dst_object)) | |
fb88bf2d | 7068 | { |
64cedb0c KH |
7069 | struct Lisp_Marker *tail; |
7070 | ||
7071 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7072 | { | |
7073 | tail->need_adjustment | |
7074 | = tail->charpos == (tail->insertion_type ? from : to); | |
7075 | need_marker_adjustment |= tail->need_adjustment; | |
7076 | } | |
4776e638 | 7077 | saved_pt = PT, saved_pt_byte = PT_BYTE; |
df7492f9 | 7078 | TEMP_SET_PT_BOTH (from, from_byte); |
f4a3cc44 | 7079 | current_buffer->text->inhibit_shrinking = 1; |
df7492f9 KH |
7080 | del_range_both (from, from_byte, to, to_byte, 1); |
7081 | coding->src_pos = -chars; | |
7082 | coding->src_pos_byte = -bytes; | |
fb88bf2d | 7083 | } |
df7492f9 | 7084 | else |
fb88bf2d | 7085 | { |
df7492f9 KH |
7086 | coding->src_pos = from; |
7087 | coding->src_pos_byte = from_byte; | |
fb88bf2d | 7088 | } |
88993dfd KH |
7089 | } |
7090 | ||
df7492f9 KH |
7091 | if (CODING_REQUIRE_DETECTION (coding)) |
7092 | detect_coding (coding); | |
7093 | attrs = CODING_ID_ATTRS (coding->id); | |
d46c5b12 | 7094 | |
2cb26057 KH |
7095 | if (EQ (dst_object, Qt) |
7096 | || (! NILP (CODING_ATTR_POST_READ (attrs)) | |
7097 | && NILP (dst_object))) | |
b73bfc1c | 7098 | { |
a1567c45 SM |
7099 | coding->dst_multibyte = !CODING_FOR_UNIBYTE (coding); |
7100 | coding->dst_object = code_conversion_save (1, coding->dst_multibyte); | |
df7492f9 KH |
7101 | coding->dst_pos = BEG; |
7102 | coding->dst_pos_byte = BEG_BYTE; | |
b73bfc1c | 7103 | } |
df7492f9 | 7104 | else if (BUFFERP (dst_object)) |
d46c5b12 | 7105 | { |
24a73b0a | 7106 | code_conversion_save (0, 0); |
df7492f9 KH |
7107 | coding->dst_object = dst_object; |
7108 | coding->dst_pos = BUF_PT (XBUFFER (dst_object)); | |
7109 | coding->dst_pos_byte = BUF_PT_BYTE (XBUFFER (dst_object)); | |
7110 | coding->dst_multibyte | |
7111 | = ! NILP (XBUFFER (dst_object)->enable_multibyte_characters); | |
d46c5b12 KH |
7112 | } |
7113 | else | |
7114 | { | |
24a73b0a | 7115 | code_conversion_save (0, 0); |
df7492f9 | 7116 | coding->dst_object = Qnil; |
0154725e SM |
7117 | /* Most callers presume this will return a multibyte result, and they |
7118 | won't use `binary' or `raw-text' anyway, so let's not worry about | |
7119 | CODING_FOR_UNIBYTE. */ | |
bb555731 | 7120 | coding->dst_multibyte = 1; |
d46c5b12 KH |
7121 | } |
7122 | ||
df7492f9 | 7123 | decode_coding (coding); |
fa46990e | 7124 | |
df7492f9 KH |
7125 | if (BUFFERP (coding->dst_object)) |
7126 | set_buffer_internal (XBUFFER (coding->dst_object)); | |
d46c5b12 | 7127 | |
df7492f9 | 7128 | if (! NILP (CODING_ATTR_POST_READ (attrs))) |
d46c5b12 | 7129 | { |
b3bfad50 | 7130 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
df7492f9 | 7131 | EMACS_INT prev_Z = Z, prev_Z_BYTE = Z_BYTE; |
2b4f9037 | 7132 | Lisp_Object val; |
d46c5b12 | 7133 | |
c0cc7f7f | 7134 | TEMP_SET_PT_BOTH (coding->dst_pos, coding->dst_pos_byte); |
b3bfad50 KH |
7135 | GCPRO5 (coding->src_object, coding->dst_object, src_object, dst_object, |
7136 | old_deactivate_mark); | |
d4850d67 KH |
7137 | val = safe_call1 (CODING_ATTR_POST_READ (attrs), |
7138 | make_number (coding->produced_char)); | |
df7492f9 KH |
7139 | UNGCPRO; |
7140 | CHECK_NATNUM (val); | |
7141 | coding->produced_char += Z - prev_Z; | |
7142 | coding->produced += Z_BYTE - prev_Z_BYTE; | |
d46c5b12 | 7143 | } |
de79a6a5 | 7144 | |
df7492f9 | 7145 | if (EQ (dst_object, Qt)) |
ec6d2bb8 | 7146 | { |
df7492f9 KH |
7147 | coding->dst_object = Fbuffer_string (); |
7148 | } | |
7149 | else if (NILP (dst_object) && BUFFERP (coding->dst_object)) | |
7150 | { | |
7151 | set_buffer_internal (XBUFFER (coding->dst_object)); | |
7152 | if (dst_bytes < coding->produced) | |
7153 | { | |
b3bfad50 | 7154 | destination = xrealloc (destination, coding->produced); |
df7492f9 KH |
7155 | if (! destination) |
7156 | { | |
065e3595 KH |
7157 | record_conversion_result (coding, |
7158 | CODING_RESULT_INSUFFICIENT_DST); | |
df7492f9 KH |
7159 | unbind_to (count, Qnil); |
7160 | return; | |
7161 | } | |
7162 | if (BEGV < GPT && GPT < BEGV + coding->produced_char) | |
7163 | move_gap_both (BEGV, BEGV_BYTE); | |
7164 | bcopy (BEGV_ADDR, destination, coding->produced); | |
7165 | coding->destination = destination; | |
d46c5b12 | 7166 | } |
ec6d2bb8 | 7167 | } |
b73bfc1c | 7168 | |
4776e638 KH |
7169 | if (saved_pt >= 0) |
7170 | { | |
7171 | /* This is the case of: | |
7172 | (BUFFERP (src_object) && EQ (src_object, dst_object)) | |
7173 | As we have moved PT while replacing the original buffer | |
7174 | contents, we must recover it now. */ | |
7175 | set_buffer_internal (XBUFFER (src_object)); | |
f4a3cc44 | 7176 | current_buffer->text->inhibit_shrinking = 0; |
4776e638 KH |
7177 | if (saved_pt < from) |
7178 | TEMP_SET_PT_BOTH (saved_pt, saved_pt_byte); | |
7179 | else if (saved_pt < from + chars) | |
7180 | TEMP_SET_PT_BOTH (from, from_byte); | |
7181 | else if (! NILP (current_buffer->enable_multibyte_characters)) | |
7182 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced_char - chars), | |
7183 | saved_pt_byte + (coding->produced - bytes)); | |
7184 | else | |
7185 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced - bytes), | |
7186 | saved_pt_byte + (coding->produced - bytes)); | |
64cedb0c KH |
7187 | |
7188 | if (need_marker_adjustment) | |
7189 | { | |
7190 | struct Lisp_Marker *tail; | |
7191 | ||
7192 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7193 | if (tail->need_adjustment) | |
7194 | { | |
7195 | tail->need_adjustment = 0; | |
7196 | if (tail->insertion_type) | |
7197 | { | |
7198 | tail->bytepos = from_byte; | |
7199 | tail->charpos = from; | |
7200 | } | |
7201 | else | |
7202 | { | |
7203 | tail->bytepos = from_byte + coding->produced; | |
7204 | tail->charpos | |
7205 | = (NILP (current_buffer->enable_multibyte_characters) | |
7206 | ? tail->bytepos : from + coding->produced_char); | |
7207 | } | |
7208 | } | |
7209 | } | |
d46c5b12 | 7210 | } |
4776e638 | 7211 | |
b3bfad50 | 7212 | Vdeactivate_mark = old_deactivate_mark; |
065e3595 | 7213 | unbind_to (count, coding->dst_object); |
d46c5b12 KH |
7214 | } |
7215 | ||
d46c5b12 | 7216 | |
df7492f9 KH |
7217 | void |
7218 | encode_coding_object (coding, src_object, from, from_byte, to, to_byte, | |
7219 | dst_object) | |
d46c5b12 | 7220 | struct coding_system *coding; |
df7492f9 KH |
7221 | Lisp_Object src_object; |
7222 | EMACS_INT from, from_byte, to, to_byte; | |
7223 | Lisp_Object dst_object; | |
d46c5b12 | 7224 | { |
b73bfc1c | 7225 | int count = specpdl_ptr - specpdl; |
df7492f9 KH |
7226 | EMACS_INT chars = to - from; |
7227 | EMACS_INT bytes = to_byte - from_byte; | |
7228 | Lisp_Object attrs; | |
4776e638 | 7229 | int saved_pt = -1, saved_pt_byte; |
64cedb0c | 7230 | int need_marker_adjustment = 0; |
c02d943b | 7231 | int kill_src_buffer = 0; |
b3bfad50 | 7232 | Lisp_Object old_deactivate_mark; |
df7492f9 | 7233 | |
b3bfad50 | 7234 | old_deactivate_mark = Vdeactivate_mark; |
df7492f9 KH |
7235 | |
7236 | coding->src_object = src_object; | |
7237 | coding->src_chars = chars; | |
7238 | coding->src_bytes = bytes; | |
7239 | coding->src_multibyte = chars < bytes; | |
7240 | ||
7241 | attrs = CODING_ID_ATTRS (coding->id); | |
7242 | ||
64cedb0c KH |
7243 | if (EQ (src_object, dst_object)) |
7244 | { | |
7245 | struct Lisp_Marker *tail; | |
7246 | ||
7247 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7248 | { | |
7249 | tail->need_adjustment | |
7250 | = tail->charpos == (tail->insertion_type ? from : to); | |
7251 | need_marker_adjustment |= tail->need_adjustment; | |
7252 | } | |
7253 | } | |
7254 | ||
df7492f9 | 7255 | if (! NILP (CODING_ATTR_PRE_WRITE (attrs))) |
6bac5b12 | 7256 | { |
24a73b0a | 7257 | coding->src_object = code_conversion_save (1, coding->src_multibyte); |
df7492f9 KH |
7258 | set_buffer_internal (XBUFFER (coding->src_object)); |
7259 | if (STRINGP (src_object)) | |
7260 | insert_from_string (src_object, from, from_byte, chars, bytes, 0); | |
7261 | else if (BUFFERP (src_object)) | |
7262 | insert_from_buffer (XBUFFER (src_object), from, chars, 0); | |
7263 | else | |
7264 | insert_1_both (coding->source + from, chars, bytes, 0, 0, 0); | |
d46c5b12 | 7265 | |
df7492f9 KH |
7266 | if (EQ (src_object, dst_object)) |
7267 | { | |
7268 | set_buffer_internal (XBUFFER (src_object)); | |
4776e638 | 7269 | saved_pt = PT, saved_pt_byte = PT_BYTE; |
df7492f9 KH |
7270 | del_range_both (from, from_byte, to, to_byte, 1); |
7271 | set_buffer_internal (XBUFFER (coding->src_object)); | |
7272 | } | |
7273 | ||
d4850d67 KH |
7274 | { |
7275 | Lisp_Object args[3]; | |
b3bfad50 | 7276 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; |
d4850d67 | 7277 | |
b3bfad50 KH |
7278 | GCPRO5 (coding->src_object, coding->dst_object, src_object, dst_object, |
7279 | old_deactivate_mark); | |
d4850d67 KH |
7280 | args[0] = CODING_ATTR_PRE_WRITE (attrs); |
7281 | args[1] = make_number (BEG); | |
7282 | args[2] = make_number (Z); | |
7283 | safe_call (3, args); | |
b3bfad50 | 7284 | UNGCPRO; |
d4850d67 | 7285 | } |
c02d943b KH |
7286 | if (XBUFFER (coding->src_object) != current_buffer) |
7287 | kill_src_buffer = 1; | |
ac87bbef | 7288 | coding->src_object = Fcurrent_buffer (); |
df7492f9 KH |
7289 | if (BEG != GPT) |
7290 | move_gap_both (BEG, BEG_BYTE); | |
7291 | coding->src_chars = Z - BEG; | |
7292 | coding->src_bytes = Z_BYTE - BEG_BYTE; | |
7293 | coding->src_pos = BEG; | |
7294 | coding->src_pos_byte = BEG_BYTE; | |
7295 | coding->src_multibyte = Z < Z_BYTE; | |
7296 | } | |
7297 | else if (STRINGP (src_object)) | |
d46c5b12 | 7298 | { |
24a73b0a | 7299 | code_conversion_save (0, 0); |
df7492f9 KH |
7300 | coding->src_pos = from; |
7301 | coding->src_pos_byte = from_byte; | |
b73bfc1c | 7302 | } |
df7492f9 | 7303 | else if (BUFFERP (src_object)) |
b73bfc1c | 7304 | { |
24a73b0a | 7305 | code_conversion_save (0, 0); |
df7492f9 | 7306 | set_buffer_internal (XBUFFER (src_object)); |
df7492f9 | 7307 | if (EQ (src_object, dst_object)) |
d46c5b12 | 7308 | { |
4776e638 | 7309 | saved_pt = PT, saved_pt_byte = PT_BYTE; |
ff0dacd7 KH |
7310 | coding->src_object = del_range_1 (from, to, 1, 1); |
7311 | coding->src_pos = 0; | |
7312 | coding->src_pos_byte = 0; | |
d46c5b12 | 7313 | } |
df7492f9 | 7314 | else |
d46c5b12 | 7315 | { |
ff0dacd7 KH |
7316 | if (from < GPT && to >= GPT) |
7317 | move_gap_both (from, from_byte); | |
df7492f9 KH |
7318 | coding->src_pos = from; |
7319 | coding->src_pos_byte = from_byte; | |
d46c5b12 | 7320 | } |
d46c5b12 | 7321 | } |
4776e638 | 7322 | else |
24a73b0a | 7323 | code_conversion_save (0, 0); |
d46c5b12 | 7324 | |
df7492f9 | 7325 | if (BUFFERP (dst_object)) |
88993dfd | 7326 | { |
df7492f9 | 7327 | coding->dst_object = dst_object; |
28f67a95 KH |
7328 | if (EQ (src_object, dst_object)) |
7329 | { | |
7330 | coding->dst_pos = from; | |
7331 | coding->dst_pos_byte = from_byte; | |
7332 | } | |
7333 | else | |
7334 | { | |
7335 | coding->dst_pos = BUF_PT (XBUFFER (dst_object)); | |
7336 | coding->dst_pos_byte = BUF_PT_BYTE (XBUFFER (dst_object)); | |
7337 | } | |
df7492f9 KH |
7338 | coding->dst_multibyte |
7339 | = ! NILP (XBUFFER (dst_object)->enable_multibyte_characters); | |
88993dfd | 7340 | } |
df7492f9 | 7341 | else if (EQ (dst_object, Qt)) |
d46c5b12 | 7342 | { |
df7492f9 | 7343 | coding->dst_object = Qnil; |
df7492f9 | 7344 | coding->dst_bytes = coding->src_chars; |
ac87bbef KH |
7345 | if (coding->dst_bytes == 0) |
7346 | coding->dst_bytes = 1; | |
7347 | coding->destination = (unsigned char *) xmalloc (coding->dst_bytes); | |
df7492f9 | 7348 | coding->dst_multibyte = 0; |
d46c5b12 KH |
7349 | } |
7350 | else | |
7351 | { | |
df7492f9 KH |
7352 | coding->dst_object = Qnil; |
7353 | coding->dst_multibyte = 0; | |
d46c5b12 KH |
7354 | } |
7355 | ||
df7492f9 | 7356 | encode_coding (coding); |
d46c5b12 | 7357 | |
df7492f9 | 7358 | if (EQ (dst_object, Qt)) |
d46c5b12 | 7359 | { |
df7492f9 KH |
7360 | if (BUFFERP (coding->dst_object)) |
7361 | coding->dst_object = Fbuffer_string (); | |
7362 | else | |
d46c5b12 | 7363 | { |
df7492f9 KH |
7364 | coding->dst_object |
7365 | = make_unibyte_string ((char *) coding->destination, | |
7366 | coding->produced); | |
7367 | xfree (coding->destination); | |
d46c5b12 | 7368 | } |
4ed46869 | 7369 | } |
d46c5b12 | 7370 | |
4776e638 KH |
7371 | if (saved_pt >= 0) |
7372 | { | |
7373 | /* This is the case of: | |
7374 | (BUFFERP (src_object) && EQ (src_object, dst_object)) | |
7375 | As we have moved PT while replacing the original buffer | |
7376 | contents, we must recover it now. */ | |
7377 | set_buffer_internal (XBUFFER (src_object)); | |
7378 | if (saved_pt < from) | |
7379 | TEMP_SET_PT_BOTH (saved_pt, saved_pt_byte); | |
7380 | else if (saved_pt < from + chars) | |
7381 | TEMP_SET_PT_BOTH (from, from_byte); | |
7382 | else if (! NILP (current_buffer->enable_multibyte_characters)) | |
7383 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced_char - chars), | |
7384 | saved_pt_byte + (coding->produced - bytes)); | |
d46c5b12 | 7385 | else |
4776e638 KH |
7386 | TEMP_SET_PT_BOTH (saved_pt + (coding->produced - bytes), |
7387 | saved_pt_byte + (coding->produced - bytes)); | |
64cedb0c KH |
7388 | |
7389 | if (need_marker_adjustment) | |
7390 | { | |
7391 | struct Lisp_Marker *tail; | |
7392 | ||
7393 | for (tail = BUF_MARKERS (current_buffer); tail; tail = tail->next) | |
7394 | if (tail->need_adjustment) | |
7395 | { | |
7396 | tail->need_adjustment = 0; | |
7397 | if (tail->insertion_type) | |
7398 | { | |
7399 | tail->bytepos = from_byte; | |
7400 | tail->charpos = from; | |
7401 | } | |
7402 | else | |
7403 | { | |
7404 | tail->bytepos = from_byte + coding->produced; | |
7405 | tail->charpos | |
7406 | = (NILP (current_buffer->enable_multibyte_characters) | |
7407 | ? tail->bytepos : from + coding->produced_char); | |
7408 | } | |
7409 | } | |
7410 | } | |
4776e638 KH |
7411 | } |
7412 | ||
c02d943b KH |
7413 | if (kill_src_buffer) |
7414 | Fkill_buffer (coding->src_object); | |
b3bfad50 KH |
7415 | |
7416 | Vdeactivate_mark = old_deactivate_mark; | |
df7492f9 | 7417 | unbind_to (count, Qnil); |
b73bfc1c KH |
7418 | } |
7419 | ||
df7492f9 | 7420 | |
b73bfc1c | 7421 | Lisp_Object |
df7492f9 | 7422 | preferred_coding_system () |
b73bfc1c | 7423 | { |
df7492f9 | 7424 | int id = coding_categories[coding_priorities[0]].id; |
2391eaa4 | 7425 | |
df7492f9 | 7426 | return CODING_ID_NAME (id); |
4ed46869 KH |
7427 | } |
7428 | ||
7429 | \f | |
7430 | #ifdef emacs | |
1397dc18 | 7431 | /*** 8. Emacs Lisp library functions ***/ |
4ed46869 | 7432 | |
4ed46869 | 7433 | DEFUN ("coding-system-p", Fcoding_system_p, Scoding_system_p, 1, 1, 0, |
48b0f3ae | 7434 | doc: /* Return t if OBJECT is nil or a coding-system. |
df7492f9 | 7435 | See the documentation of `define-coding-system' for information |
48b0f3ae PJ |
7436 | about coding-system objects. */) |
7437 | (obj) | |
4ed46869 KH |
7438 | Lisp_Object obj; |
7439 | { | |
44e8490d KH |
7440 | if (NILP (obj) |
7441 | || CODING_SYSTEM_ID (obj) >= 0) | |
7442 | return Qt; | |
7443 | if (! SYMBOLP (obj) | |
7444 | || NILP (Fget (obj, Qcoding_system_define_form))) | |
7445 | return Qnil; | |
7446 | return Qt; | |
4ed46869 KH |
7447 | } |
7448 | ||
9d991de8 RS |
7449 | DEFUN ("read-non-nil-coding-system", Fread_non_nil_coding_system, |
7450 | Sread_non_nil_coding_system, 1, 1, 0, | |
48b0f3ae PJ |
7451 | doc: /* Read a coding system from the minibuffer, prompting with string PROMPT. */) |
7452 | (prompt) | |
4ed46869 KH |
7453 | Lisp_Object prompt; |
7454 | { | |
e0e989f6 | 7455 | Lisp_Object val; |
9d991de8 RS |
7456 | do |
7457 | { | |
4608c386 KH |
7458 | val = Fcompleting_read (prompt, Vcoding_system_alist, Qnil, |
7459 | Qt, Qnil, Qcoding_system_history, Qnil, Qnil); | |
9d991de8 | 7460 | } |
8f924df7 | 7461 | while (SCHARS (val) == 0); |
e0e989f6 | 7462 | return (Fintern (val, Qnil)); |
4ed46869 KH |
7463 | } |
7464 | ||
9b787f3e | 7465 | DEFUN ("read-coding-system", Fread_coding_system, Sread_coding_system, 1, 2, 0, |
48b0f3ae | 7466 | doc: /* Read a coding system from the minibuffer, prompting with string PROMPT. |
c7183fb8 GM |
7467 | If the user enters null input, return second argument DEFAULT-CODING-SYSTEM. |
7468 | Ignores case when completing coding systems (all Emacs coding systems | |
7469 | are lower-case). */) | |
48b0f3ae | 7470 | (prompt, default_coding_system) |
9b787f3e | 7471 | Lisp_Object prompt, default_coding_system; |
4ed46869 | 7472 | { |
f44d27ce | 7473 | Lisp_Object val; |
c7183fb8 GM |
7474 | int count = SPECPDL_INDEX (); |
7475 | ||
9b787f3e | 7476 | if (SYMBOLP (default_coding_system)) |
57d25e6f | 7477 | default_coding_system = SYMBOL_NAME (default_coding_system); |
c7183fb8 | 7478 | specbind (Qcompletion_ignore_case, Qt); |
4608c386 | 7479 | val = Fcompleting_read (prompt, Vcoding_system_alist, Qnil, |
9b787f3e RS |
7480 | Qt, Qnil, Qcoding_system_history, |
7481 | default_coding_system, Qnil); | |
c7183fb8 | 7482 | unbind_to (count, Qnil); |
8f924df7 | 7483 | return (SCHARS (val) == 0 ? Qnil : Fintern (val, Qnil)); |
4ed46869 KH |
7484 | } |
7485 | ||
7486 | DEFUN ("check-coding-system", Fcheck_coding_system, Scheck_coding_system, | |
7487 | 1, 1, 0, | |
48b0f3ae | 7488 | doc: /* Check validity of CODING-SYSTEM. |
9ffd559c KH |
7489 | If valid, return CODING-SYSTEM, else signal a `coding-system-error' error. |
7490 | It is valid if it is nil or a symbol defined as a coding system by the | |
7491 | function `define-coding-system'. */) | |
df7492f9 | 7492 | (coding_system) |
4ed46869 KH |
7493 | Lisp_Object coding_system; |
7494 | { | |
44e8490d KH |
7495 | Lisp_Object define_form; |
7496 | ||
7497 | define_form = Fget (coding_system, Qcoding_system_define_form); | |
7498 | if (! NILP (define_form)) | |
7499 | { | |
7500 | Fput (coding_system, Qcoding_system_define_form, Qnil); | |
7501 | safe_eval (define_form); | |
7502 | } | |
4ed46869 KH |
7503 | if (!NILP (Fcoding_system_p (coding_system))) |
7504 | return coding_system; | |
fcad4ec4 | 7505 | xsignal1 (Qcoding_system_error, coding_system); |
4ed46869 | 7506 | } |
df7492f9 | 7507 | |
3a73fa5d | 7508 | \f |
89528eb3 KH |
7509 | /* Detect how the bytes at SRC of length SRC_BYTES are encoded. If |
7510 | HIGHEST is nonzero, return the coding system of the highest | |
7511 | priority among the detected coding systems. Otherwize return a | |
7512 | list of detected coding systems sorted by their priorities. If | |
7513 | MULTIBYTEP is nonzero, it is assumed that the bytes are in correct | |
7514 | multibyte form but contains only ASCII and eight-bit chars. | |
7515 | Otherwise, the bytes are raw bytes. | |
7516 | ||
7517 | CODING-SYSTEM controls the detection as below: | |
7518 | ||
7519 | If it is nil, detect both text-format and eol-format. If the | |
7520 | text-format part of CODING-SYSTEM is already specified | |
7521 | (e.g. `iso-latin-1'), detect only eol-format. If the eol-format | |
7522 | part of CODING-SYSTEM is already specified (e.g. `undecided-unix'), | |
7523 | detect only text-format. */ | |
7524 | ||
d46c5b12 | 7525 | Lisp_Object |
24a73b0a KH |
7526 | detect_coding_system (src, src_chars, src_bytes, highest, multibytep, |
7527 | coding_system) | |
8f924df7 | 7528 | const unsigned char *src; |
13818c30 SM |
7529 | EMACS_INT src_chars, src_bytes; |
7530 | int highest; | |
0a28aafb | 7531 | int multibytep; |
df7492f9 | 7532 | Lisp_Object coding_system; |
4ed46869 | 7533 | { |
8f924df7 | 7534 | const unsigned char *src_end = src + src_bytes; |
df7492f9 KH |
7535 | Lisp_Object attrs, eol_type; |
7536 | Lisp_Object val; | |
7537 | struct coding_system coding; | |
89528eb3 | 7538 | int id; |
ff0dacd7 | 7539 | struct coding_detection_info detect_info; |
24a73b0a | 7540 | enum coding_category base_category; |
2f3cbb32 | 7541 | int null_byte_found = 0, eight_bit_found = 0; |
b73bfc1c | 7542 | |
df7492f9 KH |
7543 | if (NILP (coding_system)) |
7544 | coding_system = Qundecided; | |
7545 | setup_coding_system (coding_system, &coding); | |
7546 | attrs = CODING_ID_ATTRS (coding.id); | |
7547 | eol_type = CODING_ID_EOL_TYPE (coding.id); | |
89528eb3 | 7548 | coding_system = CODING_ATTR_BASE_NAME (attrs); |
4ed46869 | 7549 | |
df7492f9 | 7550 | coding.source = src; |
24a73b0a | 7551 | coding.src_chars = src_chars; |
df7492f9 KH |
7552 | coding.src_bytes = src_bytes; |
7553 | coding.src_multibyte = multibytep; | |
7554 | coding.consumed = 0; | |
89528eb3 | 7555 | coding.mode |= CODING_MODE_LAST_BLOCK; |
d46c5b12 | 7556 | |
ff0dacd7 | 7557 | detect_info.checked = detect_info.found = detect_info.rejected = 0; |
d46c5b12 | 7558 | |
89528eb3 | 7559 | /* At first, detect text-format if necessary. */ |
24a73b0a KH |
7560 | base_category = XINT (CODING_ATTR_CATEGORY (attrs)); |
7561 | if (base_category == coding_category_undecided) | |
4ed46869 | 7562 | { |
ff0dacd7 KH |
7563 | enum coding_category category; |
7564 | struct coding_system *this; | |
7565 | int c, i; | |
88993dfd | 7566 | |
2f3cbb32 | 7567 | coding.head_ascii = -1; |
24a73b0a | 7568 | /* Skip all ASCII bytes except for a few ISO2022 controls. */ |
2f3cbb32 | 7569 | for (; src < src_end; src++) |
4ed46869 | 7570 | { |
df7492f9 | 7571 | c = *src; |
6cb21a4f | 7572 | if (c & 0x80) |
6cb21a4f | 7573 | { |
2f3cbb32 KH |
7574 | eight_bit_found = 1; |
7575 | if (coding.head_ascii < 0) | |
7576 | coding.head_ascii = src - coding.source; | |
7577 | if (null_byte_found) | |
7578 | break; | |
7579 | } | |
7580 | if (c < 0x20) | |
7581 | { | |
7582 | if ((c == ISO_CODE_ESC || c == ISO_CODE_SI || c == ISO_CODE_SO) | |
7583 | && ! inhibit_iso_escape_detection | |
7584 | && ! detect_info.checked) | |
6cb21a4f | 7585 | { |
2f3cbb32 KH |
7586 | if (coding.head_ascii < 0) |
7587 | coding.head_ascii = src - coding.source; | |
7588 | if (detect_coding_iso_2022 (&coding, &detect_info)) | |
7589 | { | |
7590 | /* We have scanned the whole data. */ | |
7591 | if (! (detect_info.rejected & CATEGORY_MASK_ISO_7_ELSE)) | |
7592 | /* We didn't find an 8-bit code. We may have | |
7593 | found a null-byte, but it's very rare that | |
7594 | a binary file confirm to ISO-2022. */ | |
7595 | src = src_end; | |
7596 | break; | |
7597 | } | |
7598 | } | |
7599 | else if (! c) | |
7600 | { | |
7601 | null_byte_found = 1; | |
7602 | if (eight_bit_found) | |
7603 | break; | |
6cb21a4f KH |
7604 | } |
7605 | } | |
4ed46869 | 7606 | } |
2f3cbb32 KH |
7607 | if (coding.head_ascii < 0) |
7608 | coding.head_ascii = src - coding.source; | |
88993dfd | 7609 | |
2f3cbb32 KH |
7610 | if (null_byte_found || eight_bit_found |
7611 | || coding.head_ascii < coding.src_bytes | |
6cb21a4f KH |
7612 | || detect_info.found) |
7613 | { | |
2f3cbb32 | 7614 | if (coding.head_ascii == coding.src_bytes) |
6cb21a4f KH |
7615 | /* As all bytes are 7-bit, we can ignore non-ISO-2022 codings. */ |
7616 | for (i = 0; i < coding_category_raw_text; i++) | |
ff0dacd7 | 7617 | { |
6cb21a4f | 7618 | category = coding_priorities[i]; |
c7266f4a | 7619 | this = coding_categories + category; |
6cb21a4f | 7620 | if (detect_info.found & (1 << category)) |
ff0dacd7 KH |
7621 | break; |
7622 | } | |
6cb21a4f | 7623 | else |
2f3cbb32 KH |
7624 | { |
7625 | if (null_byte_found) | |
7626 | { | |
7627 | detect_info.checked |= ~CATEGORY_MASK_UTF_16; | |
7628 | detect_info.rejected |= ~CATEGORY_MASK_UTF_16; | |
7629 | } | |
7630 | for (i = 0; i < coding_category_raw_text; i++) | |
7631 | { | |
7632 | category = coding_priorities[i]; | |
7633 | this = coding_categories + category; | |
6cb21a4f | 7634 | |
2f3cbb32 KH |
7635 | if (this->id < 0) |
7636 | { | |
7637 | /* No coding system of this category is defined. */ | |
7638 | detect_info.rejected |= (1 << category); | |
7639 | } | |
7640 | else if (category >= coding_category_raw_text) | |
7641 | continue; | |
7642 | else if (detect_info.checked & (1 << category)) | |
7643 | { | |
7644 | if (highest | |
7645 | && (detect_info.found & (1 << category))) | |
6cb21a4f | 7646 | break; |
2f3cbb32 KH |
7647 | } |
7648 | else if ((*(this->detector)) (&coding, &detect_info) | |
7649 | && highest | |
7650 | && (detect_info.found & (1 << category))) | |
7651 | { | |
7652 | if (category == coding_category_utf_16_auto) | |
7653 | { | |
7654 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
7655 | category = coding_category_utf_16_le; | |
7656 | else | |
7657 | category = coding_category_utf_16_be; | |
7658 | } | |
7659 | break; | |
7660 | } | |
7661 | } | |
7662 | } | |
6cb21a4f | 7663 | } |
ec6d2bb8 | 7664 | |
2f3cbb32 | 7665 | if ((detect_info.rejected & CATEGORY_MASK_ANY) == CATEGORY_MASK_ANY) |
ec6d2bb8 | 7666 | { |
ff0dacd7 | 7667 | detect_info.found = CATEGORY_MASK_RAW_TEXT; |
89528eb3 KH |
7668 | id = coding_categories[coding_category_raw_text].id; |
7669 | val = Fcons (make_number (id), Qnil); | |
7670 | } | |
ff0dacd7 | 7671 | else if (! detect_info.rejected && ! detect_info.found) |
89528eb3 | 7672 | { |
ff0dacd7 | 7673 | detect_info.found = CATEGORY_MASK_ANY; |
89528eb3 KH |
7674 | id = coding_categories[coding_category_undecided].id; |
7675 | val = Fcons (make_number (id), Qnil); | |
7676 | } | |
7677 | else if (highest) | |
7678 | { | |
ff0dacd7 | 7679 | if (detect_info.found) |
ec6d2bb8 | 7680 | { |
ff0dacd7 KH |
7681 | detect_info.found = 1 << category; |
7682 | val = Fcons (make_number (this->id), Qnil); | |
7683 | } | |
7684 | else | |
7685 | for (i = 0; i < coding_category_raw_text; i++) | |
7686 | if (! (detect_info.rejected & (1 << coding_priorities[i]))) | |
7687 | { | |
7688 | detect_info.found = 1 << coding_priorities[i]; | |
7689 | id = coding_categories[coding_priorities[i]].id; | |
7690 | val = Fcons (make_number (id), Qnil); | |
7691 | break; | |
7692 | } | |
7693 | } | |
89528eb3 KH |
7694 | else |
7695 | { | |
ff0dacd7 KH |
7696 | int mask = detect_info.rejected | detect_info.found; |
7697 | int found = 0; | |
89528eb3 | 7698 | val = Qnil; |
ec6d2bb8 | 7699 | |
89528eb3 | 7700 | for (i = coding_category_raw_text - 1; i >= 0; i--) |
ff0dacd7 KH |
7701 | { |
7702 | category = coding_priorities[i]; | |
7703 | if (! (mask & (1 << category))) | |
ec6d2bb8 | 7704 | { |
ff0dacd7 KH |
7705 | found |= 1 << category; |
7706 | id = coding_categories[category].id; | |
c7266f4a KH |
7707 | if (id >= 0) |
7708 | val = Fcons (make_number (id), val); | |
ff0dacd7 KH |
7709 | } |
7710 | } | |
7711 | for (i = coding_category_raw_text - 1; i >= 0; i--) | |
7712 | { | |
7713 | category = coding_priorities[i]; | |
7714 | if (detect_info.found & (1 << category)) | |
7715 | { | |
7716 | id = coding_categories[category].id; | |
7717 | val = Fcons (make_number (id), val); | |
ec6d2bb8 | 7718 | } |
ec6d2bb8 | 7719 | } |
ff0dacd7 | 7720 | detect_info.found |= found; |
ec6d2bb8 | 7721 | } |
ec6d2bb8 | 7722 | } |
24a73b0a KH |
7723 | else if (base_category == coding_category_utf_16_auto) |
7724 | { | |
7725 | if (detect_coding_utf_16 (&coding, &detect_info)) | |
7726 | { | |
24a73b0a KH |
7727 | struct coding_system *this; |
7728 | ||
7729 | if (detect_info.found & CATEGORY_MASK_UTF_16_LE) | |
7730 | this = coding_categories + coding_category_utf_16_le; | |
7731 | else if (detect_info.found & CATEGORY_MASK_UTF_16_BE) | |
7732 | this = coding_categories + coding_category_utf_16_be; | |
7733 | else if (detect_info.rejected & CATEGORY_MASK_UTF_16_LE_NOSIG) | |
7734 | this = coding_categories + coding_category_utf_16_be_nosig; | |
7735 | else | |
7736 | this = coding_categories + coding_category_utf_16_le_nosig; | |
7737 | val = Fcons (make_number (this->id), Qnil); | |
7738 | } | |
7739 | } | |
df7492f9 KH |
7740 | else |
7741 | { | |
ff0dacd7 | 7742 | detect_info.found = 1 << XINT (CODING_ATTR_CATEGORY (attrs)); |
89528eb3 | 7743 | val = Fcons (make_number (coding.id), Qnil); |
4ed46869 | 7744 | } |
df7492f9 | 7745 | |
89528eb3 | 7746 | /* Then, detect eol-format if necessary. */ |
df7492f9 | 7747 | { |
89528eb3 | 7748 | int normal_eol = -1, utf_16_be_eol = -1, utf_16_le_eol; |
df7492f9 KH |
7749 | Lisp_Object tail; |
7750 | ||
89528eb3 KH |
7751 | if (VECTORP (eol_type)) |
7752 | { | |
ff0dacd7 | 7753 | if (detect_info.found & ~CATEGORY_MASK_UTF_16) |
2f3cbb32 KH |
7754 | { |
7755 | if (null_byte_found) | |
7756 | normal_eol = EOL_SEEN_LF; | |
7757 | else | |
7758 | normal_eol = detect_eol (coding.source, src_bytes, | |
7759 | coding_category_raw_text); | |
7760 | } | |
ff0dacd7 KH |
7761 | if (detect_info.found & (CATEGORY_MASK_UTF_16_BE |
7762 | | CATEGORY_MASK_UTF_16_BE_NOSIG)) | |
89528eb3 KH |
7763 | utf_16_be_eol = detect_eol (coding.source, src_bytes, |
7764 | coding_category_utf_16_be); | |
ff0dacd7 KH |
7765 | if (detect_info.found & (CATEGORY_MASK_UTF_16_LE |
7766 | | CATEGORY_MASK_UTF_16_LE_NOSIG)) | |
89528eb3 KH |
7767 | utf_16_le_eol = detect_eol (coding.source, src_bytes, |
7768 | coding_category_utf_16_le); | |
7769 | } | |
7770 | else | |
7771 | { | |
7772 | if (EQ (eol_type, Qunix)) | |
7773 | normal_eol = utf_16_be_eol = utf_16_le_eol = EOL_SEEN_LF; | |
7774 | else if (EQ (eol_type, Qdos)) | |
7775 | normal_eol = utf_16_be_eol = utf_16_le_eol = EOL_SEEN_CRLF; | |
7776 | else | |
7777 | normal_eol = utf_16_be_eol = utf_16_le_eol = EOL_SEEN_CR; | |
7778 | } | |
7779 | ||
df7492f9 KH |
7780 | for (tail = val; CONSP (tail); tail = XCDR (tail)) |
7781 | { | |
89528eb3 | 7782 | enum coding_category category; |
df7492f9 | 7783 | int this_eol; |
89528eb3 KH |
7784 | |
7785 | id = XINT (XCAR (tail)); | |
7786 | attrs = CODING_ID_ATTRS (id); | |
7787 | category = XINT (CODING_ATTR_CATEGORY (attrs)); | |
7788 | eol_type = CODING_ID_EOL_TYPE (id); | |
df7492f9 KH |
7789 | if (VECTORP (eol_type)) |
7790 | { | |
89528eb3 KH |
7791 | if (category == coding_category_utf_16_be |
7792 | || category == coding_category_utf_16_be_nosig) | |
7793 | this_eol = utf_16_be_eol; | |
7794 | else if (category == coding_category_utf_16_le | |
7795 | || category == coding_category_utf_16_le_nosig) | |
7796 | this_eol = utf_16_le_eol; | |
df7492f9 | 7797 | else |
89528eb3 KH |
7798 | this_eol = normal_eol; |
7799 | ||
df7492f9 KH |
7800 | if (this_eol == EOL_SEEN_LF) |
7801 | XSETCAR (tail, AREF (eol_type, 0)); | |
7802 | else if (this_eol == EOL_SEEN_CRLF) | |
7803 | XSETCAR (tail, AREF (eol_type, 1)); | |
7804 | else if (this_eol == EOL_SEEN_CR) | |
7805 | XSETCAR (tail, AREF (eol_type, 2)); | |
89528eb3 KH |
7806 | else |
7807 | XSETCAR (tail, CODING_ID_NAME (id)); | |
df7492f9 | 7808 | } |
89528eb3 KH |
7809 | else |
7810 | XSETCAR (tail, CODING_ID_NAME (id)); | |
df7492f9 KH |
7811 | } |
7812 | } | |
ec6d2bb8 | 7813 | |
03699b14 | 7814 | return (highest ? XCAR (val) : val); |
ec6d2bb8 KH |
7815 | } |
7816 | ||
ec6d2bb8 | 7817 | |
d46c5b12 KH |
7818 | DEFUN ("detect-coding-region", Fdetect_coding_region, Sdetect_coding_region, |
7819 | 2, 3, 0, | |
48b0f3ae PJ |
7820 | doc: /* Detect coding system of the text in the region between START and END. |
7821 | Return a list of possible coding systems ordered by priority. | |
ec6d2bb8 | 7822 | |
12e0131a KH |
7823 | If only ASCII characters are found (except for such ISO-2022 control |
7824 | characters ISO-2022 as ESC), it returns a list of single element | |
48b0f3ae PJ |
7825 | `undecided' or its subsidiary coding system according to a detected |
7826 | end-of-line format. | |
ec6d2bb8 | 7827 | |
48b0f3ae PJ |
7828 | If optional argument HIGHEST is non-nil, return the coding system of |
7829 | highest priority. */) | |
7830 | (start, end, highest) | |
d46c5b12 KH |
7831 | Lisp_Object start, end, highest; |
7832 | { | |
7833 | int from, to; | |
7834 | int from_byte, to_byte; | |
ec6d2bb8 | 7835 | |
b7826503 PJ |
7836 | CHECK_NUMBER_COERCE_MARKER (start); |
7837 | CHECK_NUMBER_COERCE_MARKER (end); | |
ec6d2bb8 | 7838 | |
d46c5b12 KH |
7839 | validate_region (&start, &end); |
7840 | from = XINT (start), to = XINT (end); | |
7841 | from_byte = CHAR_TO_BYTE (from); | |
7842 | to_byte = CHAR_TO_BYTE (to); | |
ec6d2bb8 | 7843 | |
d46c5b12 KH |
7844 | if (from < GPT && to >= GPT) |
7845 | move_gap_both (to, to_byte); | |
c210f766 | 7846 | |
d46c5b12 | 7847 | return detect_coding_system (BYTE_POS_ADDR (from_byte), |
24a73b0a | 7848 | to - from, to_byte - from_byte, |
0a28aafb KH |
7849 | !NILP (highest), |
7850 | !NILP (current_buffer | |
df7492f9 KH |
7851 | ->enable_multibyte_characters), |
7852 | Qnil); | |
ec6d2bb8 KH |
7853 | } |
7854 | ||
d46c5b12 KH |
7855 | DEFUN ("detect-coding-string", Fdetect_coding_string, Sdetect_coding_string, |
7856 | 1, 2, 0, | |
48b0f3ae PJ |
7857 | doc: /* Detect coding system of the text in STRING. |
7858 | Return a list of possible coding systems ordered by priority. | |
fb88bf2d | 7859 | |
12e0131a KH |
7860 | If only ASCII characters are found (except for such ISO-2022 control |
7861 | characters ISO-2022 as ESC), it returns a list of single element | |
48b0f3ae PJ |
7862 | `undecided' or its subsidiary coding system according to a detected |
7863 | end-of-line format. | |
d46c5b12 | 7864 | |
48b0f3ae PJ |
7865 | If optional argument HIGHEST is non-nil, return the coding system of |
7866 | highest priority. */) | |
7867 | (string, highest) | |
d46c5b12 KH |
7868 | Lisp_Object string, highest; |
7869 | { | |
b7826503 | 7870 | CHECK_STRING (string); |
b73bfc1c | 7871 | |
24a73b0a KH |
7872 | return detect_coding_system (SDATA (string), |
7873 | SCHARS (string), SBYTES (string), | |
8f924df7 | 7874 | !NILP (highest), STRING_MULTIBYTE (string), |
df7492f9 | 7875 | Qnil); |
4ed46869 | 7876 | } |
4ed46869 | 7877 | |
b73bfc1c | 7878 | |
df7492f9 KH |
7879 | static INLINE int |
7880 | char_encodable_p (c, attrs) | |
7881 | int c; | |
7882 | Lisp_Object attrs; | |
05e6f5dc | 7883 | { |
df7492f9 | 7884 | Lisp_Object tail; |
df7492f9 | 7885 | struct charset *charset; |
7d64c6ad | 7886 | Lisp_Object translation_table; |
d46c5b12 | 7887 | |
7d64c6ad | 7888 | translation_table = CODING_ATTR_TRANS_TBL (attrs); |
a6f87d34 | 7889 | if (! NILP (translation_table)) |
7d64c6ad | 7890 | c = translate_char (translation_table, c); |
df7492f9 KH |
7891 | for (tail = CODING_ATTR_CHARSET_LIST (attrs); |
7892 | CONSP (tail); tail = XCDR (tail)) | |
e133c8fa | 7893 | { |
df7492f9 KH |
7894 | charset = CHARSET_FROM_ID (XINT (XCAR (tail))); |
7895 | if (CHAR_CHARSET_P (c, charset)) | |
7896 | break; | |
e133c8fa | 7897 | } |
df7492f9 | 7898 | return (! NILP (tail)); |
05e6f5dc | 7899 | } |
83fa074f | 7900 | |
fb88bf2d | 7901 | |
df7492f9 KH |
7902 | /* Return a list of coding systems that safely encode the text between |
7903 | START and END. If EXCLUDE is non-nil, it is a list of coding | |
7904 | systems not to check. The returned list doesn't contain any such | |
48468dac | 7905 | coding systems. In any case, if the text contains only ASCII or is |
df7492f9 | 7906 | unibyte, return t. */ |
e077cc80 | 7907 | |
df7492f9 KH |
7908 | DEFUN ("find-coding-systems-region-internal", |
7909 | Ffind_coding_systems_region_internal, | |
7910 | Sfind_coding_systems_region_internal, 2, 3, 0, | |
7911 | doc: /* Internal use only. */) | |
7912 | (start, end, exclude) | |
7913 | Lisp_Object start, end, exclude; | |
7914 | { | |
7915 | Lisp_Object coding_attrs_list, safe_codings; | |
7916 | EMACS_INT start_byte, end_byte; | |
7c78e542 | 7917 | const unsigned char *p, *pbeg, *pend; |
df7492f9 KH |
7918 | int c; |
7919 | Lisp_Object tail, elt; | |
d46c5b12 | 7920 | |
df7492f9 KH |
7921 | if (STRINGP (start)) |
7922 | { | |
7923 | if (!STRING_MULTIBYTE (start) | |
8f924df7 | 7924 | || SCHARS (start) == SBYTES (start)) |
df7492f9 KH |
7925 | return Qt; |
7926 | start_byte = 0; | |
8f924df7 | 7927 | end_byte = SBYTES (start); |
df7492f9 KH |
7928 | } |
7929 | else | |
d46c5b12 | 7930 | { |
df7492f9 KH |
7931 | CHECK_NUMBER_COERCE_MARKER (start); |
7932 | CHECK_NUMBER_COERCE_MARKER (end); | |
7933 | if (XINT (start) < BEG || XINT (end) > Z || XINT (start) > XINT (end)) | |
7934 | args_out_of_range (start, end); | |
7935 | if (NILP (current_buffer->enable_multibyte_characters)) | |
7936 | return Qt; | |
7937 | start_byte = CHAR_TO_BYTE (XINT (start)); | |
7938 | end_byte = CHAR_TO_BYTE (XINT (end)); | |
7939 | if (XINT (end) - XINT (start) == end_byte - start_byte) | |
7940 | return Qt; | |
d46c5b12 | 7941 | |
e1c23804 | 7942 | if (XINT (start) < GPT && XINT (end) > GPT) |
d46c5b12 | 7943 | { |
e1c23804 DL |
7944 | if ((GPT - XINT (start)) < (XINT (end) - GPT)) |
7945 | move_gap_both (XINT (start), start_byte); | |
df7492f9 | 7946 | else |
e1c23804 | 7947 | move_gap_both (XINT (end), end_byte); |
d46c5b12 KH |
7948 | } |
7949 | } | |
7950 | ||
df7492f9 KH |
7951 | coding_attrs_list = Qnil; |
7952 | for (tail = Vcoding_system_list; CONSP (tail); tail = XCDR (tail)) | |
7953 | if (NILP (exclude) | |
7954 | || NILP (Fmemq (XCAR (tail), exclude))) | |
7955 | { | |
7956 | Lisp_Object attrs; | |
d46c5b12 | 7957 | |
df7492f9 KH |
7958 | attrs = AREF (CODING_SYSTEM_SPEC (XCAR (tail)), 0); |
7959 | if (EQ (XCAR (tail), CODING_ATTR_BASE_NAME (attrs)) | |
7960 | && ! EQ (CODING_ATTR_TYPE (attrs), Qundecided)) | |
7d64c6ad KH |
7961 | { |
7962 | ASET (attrs, coding_attr_trans_tbl, | |
2170c8f0 | 7963 | get_translation_table (attrs, 1, NULL)); |
7d64c6ad KH |
7964 | coding_attrs_list = Fcons (attrs, coding_attrs_list); |
7965 | } | |
df7492f9 | 7966 | } |
d46c5b12 | 7967 | |
df7492f9 | 7968 | if (STRINGP (start)) |
8f924df7 | 7969 | p = pbeg = SDATA (start); |
df7492f9 KH |
7970 | else |
7971 | p = pbeg = BYTE_POS_ADDR (start_byte); | |
7972 | pend = p + (end_byte - start_byte); | |
b843d1ae | 7973 | |
df7492f9 KH |
7974 | while (p < pend && ASCII_BYTE_P (*p)) p++; |
7975 | while (p < pend && ASCII_BYTE_P (*(pend - 1))) pend--; | |
d46c5b12 | 7976 | |
05e6f5dc | 7977 | while (p < pend) |
72d1a715 | 7978 | { |
df7492f9 KH |
7979 | if (ASCII_BYTE_P (*p)) |
7980 | p++; | |
72d1a715 RS |
7981 | else |
7982 | { | |
df7492f9 | 7983 | c = STRING_CHAR_ADVANCE (p); |
12410ef1 | 7984 | |
df7492f9 KH |
7985 | charset_map_loaded = 0; |
7986 | for (tail = coding_attrs_list; CONSP (tail);) | |
7987 | { | |
7988 | elt = XCAR (tail); | |
7989 | if (NILP (elt)) | |
7990 | tail = XCDR (tail); | |
7991 | else if (char_encodable_p (c, elt)) | |
7992 | tail = XCDR (tail); | |
7993 | else if (CONSP (XCDR (tail))) | |
7994 | { | |
7995 | XSETCAR (tail, XCAR (XCDR (tail))); | |
7996 | XSETCDR (tail, XCDR (XCDR (tail))); | |
7997 | } | |
7998 | else | |
7999 | { | |
8000 | XSETCAR (tail, Qnil); | |
8001 | tail = XCDR (tail); | |
8002 | } | |
8003 | } | |
8004 | if (charset_map_loaded) | |
8005 | { | |
8006 | EMACS_INT p_offset = p - pbeg, pend_offset = pend - pbeg; | |
05e6f5dc | 8007 | |
df7492f9 | 8008 | if (STRINGP (start)) |
8f924df7 | 8009 | pbeg = SDATA (start); |
df7492f9 KH |
8010 | else |
8011 | pbeg = BYTE_POS_ADDR (start_byte); | |
8012 | p = pbeg + p_offset; | |
8013 | pend = pbeg + pend_offset; | |
8014 | } | |
8015 | } | |
ec6d2bb8 | 8016 | } |
fb88bf2d | 8017 | |
988b3759 | 8018 | safe_codings = list2 (Qraw_text, Qno_conversion); |
df7492f9 KH |
8019 | for (tail = coding_attrs_list; CONSP (tail); tail = XCDR (tail)) |
8020 | if (! NILP (XCAR (tail))) | |
8021 | safe_codings = Fcons (CODING_ATTR_BASE_NAME (XCAR (tail)), safe_codings); | |
ec6d2bb8 | 8022 | |
05e6f5dc KH |
8023 | return safe_codings; |
8024 | } | |
4956c225 | 8025 | |
d46c5b12 | 8026 | |
8f924df7 KH |
8027 | DEFUN ("unencodable-char-position", Funencodable_char_position, |
8028 | Sunencodable_char_position, 3, 5, 0, | |
8029 | doc: /* | |
8030 | Return position of first un-encodable character in a region. | |
8031 | START and END specfiy the region and CODING-SYSTEM specifies the | |
8032 | encoding to check. Return nil if CODING-SYSTEM does encode the region. | |
d46c5b12 | 8033 | |
8f924df7 KH |
8034 | If optional 4th argument COUNT is non-nil, it specifies at most how |
8035 | many un-encodable characters to search. In this case, the value is a | |
8036 | list of positions. | |
d46c5b12 | 8037 | |
8f924df7 KH |
8038 | If optional 5th argument STRING is non-nil, it is a string to search |
8039 | for un-encodable characters. In that case, START and END are indexes | |
8040 | to the string. */) | |
8041 | (start, end, coding_system, count, string) | |
8042 | Lisp_Object start, end, coding_system, count, string; | |
8043 | { | |
8044 | int n; | |
8045 | struct coding_system coding; | |
7d64c6ad | 8046 | Lisp_Object attrs, charset_list, translation_table; |
8f924df7 KH |
8047 | Lisp_Object positions; |
8048 | int from, to; | |
8049 | const unsigned char *p, *stop, *pend; | |
8050 | int ascii_compatible; | |
fb88bf2d | 8051 | |
8f924df7 KH |
8052 | setup_coding_system (Fcheck_coding_system (coding_system), &coding); |
8053 | attrs = CODING_ID_ATTRS (coding.id); | |
8054 | if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text)) | |
8055 | return Qnil; | |
8056 | ascii_compatible = ! NILP (CODING_ATTR_ASCII_COMPAT (attrs)); | |
8057 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
2170c8f0 | 8058 | translation_table = get_translation_table (attrs, 1, NULL); |
fb88bf2d | 8059 | |
8f924df7 KH |
8060 | if (NILP (string)) |
8061 | { | |
8062 | validate_region (&start, &end); | |
8063 | from = XINT (start); | |
8064 | to = XINT (end); | |
8065 | if (NILP (current_buffer->enable_multibyte_characters) | |
8066 | || (ascii_compatible | |
8067 | && (to - from) == (CHAR_TO_BYTE (to) - (CHAR_TO_BYTE (from))))) | |
8068 | return Qnil; | |
8069 | p = CHAR_POS_ADDR (from); | |
8070 | pend = CHAR_POS_ADDR (to); | |
8071 | if (from < GPT && to >= GPT) | |
8072 | stop = GPT_ADDR; | |
8073 | else | |
8074 | stop = pend; | |
8075 | } | |
8076 | else | |
8077 | { | |
8078 | CHECK_STRING (string); | |
8079 | CHECK_NATNUM (start); | |
8080 | CHECK_NATNUM (end); | |
8081 | from = XINT (start); | |
8082 | to = XINT (end); | |
8083 | if (from > to | |
8084 | || to > SCHARS (string)) | |
8085 | args_out_of_range_3 (string, start, end); | |
8086 | if (! STRING_MULTIBYTE (string)) | |
8087 | return Qnil; | |
8088 | p = SDATA (string) + string_char_to_byte (string, from); | |
8089 | stop = pend = SDATA (string) + string_char_to_byte (string, to); | |
8090 | if (ascii_compatible && (to - from) == (pend - p)) | |
8091 | return Qnil; | |
8092 | } | |
f2558efd | 8093 | |
8f924df7 KH |
8094 | if (NILP (count)) |
8095 | n = 1; | |
8096 | else | |
b73bfc1c | 8097 | { |
8f924df7 KH |
8098 | CHECK_NATNUM (count); |
8099 | n = XINT (count); | |
b73bfc1c KH |
8100 | } |
8101 | ||
8f924df7 KH |
8102 | positions = Qnil; |
8103 | while (1) | |
d46c5b12 | 8104 | { |
8f924df7 | 8105 | int c; |
ec6d2bb8 | 8106 | |
8f924df7 KH |
8107 | if (ascii_compatible) |
8108 | while (p < stop && ASCII_BYTE_P (*p)) | |
8109 | p++, from++; | |
8110 | if (p >= stop) | |
0e79d667 | 8111 | { |
8f924df7 KH |
8112 | if (p >= pend) |
8113 | break; | |
8114 | stop = pend; | |
8115 | p = GAP_END_ADDR; | |
0e79d667 | 8116 | } |
ec6d2bb8 | 8117 | |
8f924df7 KH |
8118 | c = STRING_CHAR_ADVANCE (p); |
8119 | if (! (ASCII_CHAR_P (c) && ascii_compatible) | |
7d64c6ad KH |
8120 | && ! char_charset (translate_char (translation_table, c), |
8121 | charset_list, NULL)) | |
ec6d2bb8 | 8122 | { |
8f924df7 KH |
8123 | positions = Fcons (make_number (from), positions); |
8124 | n--; | |
8125 | if (n == 0) | |
8126 | break; | |
ec6d2bb8 KH |
8127 | } |
8128 | ||
8f924df7 KH |
8129 | from++; |
8130 | } | |
d46c5b12 | 8131 | |
8f924df7 KH |
8132 | return (NILP (count) ? Fcar (positions) : Fnreverse (positions)); |
8133 | } | |
d46c5b12 | 8134 | |
d46c5b12 | 8135 | |
df7492f9 KH |
8136 | DEFUN ("check-coding-systems-region", Fcheck_coding_systems_region, |
8137 | Scheck_coding_systems_region, 3, 3, 0, | |
8138 | doc: /* Check if the region is encodable by coding systems. | |
d46c5b12 | 8139 | |
df7492f9 KH |
8140 | START and END are buffer positions specifying the region. |
8141 | CODING-SYSTEM-LIST is a list of coding systems to check. | |
d46c5b12 | 8142 | |
df7492f9 KH |
8143 | The value is an alist ((CODING-SYSTEM POS0 POS1 ...) ...), where |
8144 | CODING-SYSTEM is a member of CODING-SYSTEM-LIst and can't encode the | |
8145 | whole region, POS0, POS1, ... are buffer positions where non-encodable | |
8146 | characters are found. | |
93dec019 | 8147 | |
df7492f9 KH |
8148 | If all coding systems in CODING-SYSTEM-LIST can encode the region, the |
8149 | value is nil. | |
93dec019 | 8150 | |
df7492f9 KH |
8151 | START may be a string. In that case, check if the string is |
8152 | encodable, and the value contains indices to the string instead of | |
8153 | buffer positions. END is ignored. */) | |
8154 | (start, end, coding_system_list) | |
8155 | Lisp_Object start, end, coding_system_list; | |
05e6f5dc | 8156 | { |
df7492f9 KH |
8157 | Lisp_Object list; |
8158 | EMACS_INT start_byte, end_byte; | |
8159 | int pos; | |
7c78e542 | 8160 | const unsigned char *p, *pbeg, *pend; |
df7492f9 | 8161 | int c; |
7d64c6ad | 8162 | Lisp_Object tail, elt, attrs; |
70ad9fc4 | 8163 | |
05e6f5dc KH |
8164 | if (STRINGP (start)) |
8165 | { | |
df7492f9 | 8166 | if (!STRING_MULTIBYTE (start) |
8f924df7 | 8167 | && SCHARS (start) != SBYTES (start)) |
df7492f9 KH |
8168 | return Qnil; |
8169 | start_byte = 0; | |
8f924df7 | 8170 | end_byte = SBYTES (start); |
df7492f9 | 8171 | pos = 0; |
d46c5b12 | 8172 | } |
05e6f5dc | 8173 | else |
b73bfc1c | 8174 | { |
b7826503 PJ |
8175 | CHECK_NUMBER_COERCE_MARKER (start); |
8176 | CHECK_NUMBER_COERCE_MARKER (end); | |
05e6f5dc KH |
8177 | if (XINT (start) < BEG || XINT (end) > Z || XINT (start) > XINT (end)) |
8178 | args_out_of_range (start, end); | |
8179 | if (NILP (current_buffer->enable_multibyte_characters)) | |
df7492f9 KH |
8180 | return Qnil; |
8181 | start_byte = CHAR_TO_BYTE (XINT (start)); | |
8182 | end_byte = CHAR_TO_BYTE (XINT (end)); | |
8183 | if (XINT (end) - XINT (start) == end_byte - start_byte) | |
05e6f5dc | 8184 | return Qt; |
df7492f9 | 8185 | |
e1c23804 | 8186 | if (XINT (start) < GPT && XINT (end) > GPT) |
b73bfc1c | 8187 | { |
e1c23804 DL |
8188 | if ((GPT - XINT (start)) < (XINT (end) - GPT)) |
8189 | move_gap_both (XINT (start), start_byte); | |
df7492f9 | 8190 | else |
e1c23804 | 8191 | move_gap_both (XINT (end), end_byte); |
b73bfc1c | 8192 | } |
e1c23804 | 8193 | pos = XINT (start); |
b73bfc1c | 8194 | } |
7553d0e1 | 8195 | |
df7492f9 KH |
8196 | list = Qnil; |
8197 | for (tail = coding_system_list; CONSP (tail); tail = XCDR (tail)) | |
12410ef1 | 8198 | { |
df7492f9 | 8199 | elt = XCAR (tail); |
7d64c6ad | 8200 | attrs = AREF (CODING_SYSTEM_SPEC (elt), 0); |
2170c8f0 KH |
8201 | ASET (attrs, coding_attr_trans_tbl, |
8202 | get_translation_table (attrs, 1, NULL)); | |
7d64c6ad | 8203 | list = Fcons (Fcons (elt, Fcons (attrs, Qnil)), list); |
12410ef1 KH |
8204 | } |
8205 | ||
df7492f9 | 8206 | if (STRINGP (start)) |
8f924df7 | 8207 | p = pbeg = SDATA (start); |
72d1a715 | 8208 | else |
df7492f9 KH |
8209 | p = pbeg = BYTE_POS_ADDR (start_byte); |
8210 | pend = p + (end_byte - start_byte); | |
4ed46869 | 8211 | |
df7492f9 KH |
8212 | while (p < pend && ASCII_BYTE_P (*p)) p++, pos++; |
8213 | while (p < pend && ASCII_BYTE_P (*(pend - 1))) pend--; | |
ec6d2bb8 | 8214 | |
df7492f9 | 8215 | while (p < pend) |
d46c5b12 | 8216 | { |
df7492f9 KH |
8217 | if (ASCII_BYTE_P (*p)) |
8218 | p++; | |
e133c8fa | 8219 | else |
05e6f5dc | 8220 | { |
df7492f9 KH |
8221 | c = STRING_CHAR_ADVANCE (p); |
8222 | ||
8223 | charset_map_loaded = 0; | |
8224 | for (tail = list; CONSP (tail); tail = XCDR (tail)) | |
8225 | { | |
8226 | elt = XCDR (XCAR (tail)); | |
8227 | if (! char_encodable_p (c, XCAR (elt))) | |
8228 | XSETCDR (elt, Fcons (make_number (pos), XCDR (elt))); | |
8229 | } | |
8230 | if (charset_map_loaded) | |
8231 | { | |
8232 | EMACS_INT p_offset = p - pbeg, pend_offset = pend - pbeg; | |
8233 | ||
8234 | if (STRINGP (start)) | |
8f924df7 | 8235 | pbeg = SDATA (start); |
df7492f9 KH |
8236 | else |
8237 | pbeg = BYTE_POS_ADDR (start_byte); | |
8238 | p = pbeg + p_offset; | |
8239 | pend = pbeg + pend_offset; | |
8240 | } | |
05e6f5dc | 8241 | } |
df7492f9 | 8242 | pos++; |
d46c5b12 | 8243 | } |
4ed46869 | 8244 | |
df7492f9 KH |
8245 | tail = list; |
8246 | list = Qnil; | |
8247 | for (; CONSP (tail); tail = XCDR (tail)) | |
ec6d2bb8 | 8248 | { |
df7492f9 KH |
8249 | elt = XCAR (tail); |
8250 | if (CONSP (XCDR (XCDR (elt)))) | |
8251 | list = Fcons (Fcons (XCAR (elt), Fnreverse (XCDR (XCDR (elt)))), | |
8252 | list); | |
ec6d2bb8 | 8253 | } |
2b4f9037 | 8254 | |
df7492f9 | 8255 | return list; |
d46c5b12 KH |
8256 | } |
8257 | ||
3fd9494b | 8258 | |
b73bfc1c | 8259 | Lisp_Object |
df7492f9 KH |
8260 | code_convert_region (start, end, coding_system, dst_object, encodep, norecord) |
8261 | Lisp_Object start, end, coding_system, dst_object; | |
8262 | int encodep, norecord; | |
4ed46869 | 8263 | { |
3a73fa5d | 8264 | struct coding_system coding; |
df7492f9 KH |
8265 | EMACS_INT from, from_byte, to, to_byte; |
8266 | Lisp_Object src_object; | |
4ed46869 | 8267 | |
b7826503 PJ |
8268 | CHECK_NUMBER_COERCE_MARKER (start); |
8269 | CHECK_NUMBER_COERCE_MARKER (end); | |
df7492f9 KH |
8270 | if (NILP (coding_system)) |
8271 | coding_system = Qno_conversion; | |
8272 | else | |
8273 | CHECK_CODING_SYSTEM (coding_system); | |
8274 | src_object = Fcurrent_buffer (); | |
8275 | if (NILP (dst_object)) | |
8276 | dst_object = src_object; | |
8277 | else if (! EQ (dst_object, Qt)) | |
8278 | CHECK_BUFFER (dst_object); | |
3a73fa5d | 8279 | |
d46c5b12 KH |
8280 | validate_region (&start, &end); |
8281 | from = XFASTINT (start); | |
df7492f9 | 8282 | from_byte = CHAR_TO_BYTE (from); |
d46c5b12 | 8283 | to = XFASTINT (end); |
df7492f9 | 8284 | to_byte = CHAR_TO_BYTE (to); |
764ca8da | 8285 | |
df7492f9 KH |
8286 | setup_coding_system (coding_system, &coding); |
8287 | coding.mode |= CODING_MODE_LAST_BLOCK; | |
ec6d2bb8 | 8288 | |
df7492f9 KH |
8289 | if (encodep) |
8290 | encode_coding_object (&coding, src_object, from, from_byte, to, to_byte, | |
8291 | dst_object); | |
8292 | else | |
8293 | decode_coding_object (&coding, src_object, from, from_byte, to, to_byte, | |
8294 | dst_object); | |
8295 | if (! norecord) | |
8296 | Vlast_coding_system_used = CODING_ID_NAME (coding.id); | |
ec6d2bb8 | 8297 | |
df7492f9 KH |
8298 | return (BUFFERP (dst_object) |
8299 | ? make_number (coding.produced_char) | |
8300 | : coding.dst_object); | |
4031e2bf | 8301 | } |
78108bcd | 8302 | |
4ed46869 | 8303 | |
4031e2bf | 8304 | DEFUN ("decode-coding-region", Fdecode_coding_region, Sdecode_coding_region, |
df7492f9 | 8305 | 3, 4, "r\nzCoding system: ", |
48b0f3ae | 8306 | doc: /* Decode the current region from the specified coding system. |
df7492f9 KH |
8307 | When called from a program, takes four arguments: |
8308 | START, END, CODING-SYSTEM, and DESTINATION. | |
8309 | START and END are buffer positions. | |
8844fa83 | 8310 | |
df7492f9 | 8311 | Optional 4th arguments DESTINATION specifies where the decoded text goes. |
2354b80b | 8312 | If nil, the region between START and END is replaced by the decoded text. |
df7492f9 KH |
8313 | If buffer, the decoded text is inserted in the buffer. |
8314 | If t, the decoded text is returned. | |
8844fa83 | 8315 | |
48b0f3ae PJ |
8316 | This function sets `last-coding-system-used' to the precise coding system |
8317 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
8318 | not fully specified.) | |
8319 | It returns the length of the decoded text. */) | |
df7492f9 KH |
8320 | (start, end, coding_system, destination) |
8321 | Lisp_Object start, end, coding_system, destination; | |
4031e2bf | 8322 | { |
df7492f9 | 8323 | return code_convert_region (start, end, coding_system, destination, 0, 0); |
3a73fa5d | 8324 | } |
8844fa83 | 8325 | |
3a73fa5d | 8326 | DEFUN ("encode-coding-region", Fencode_coding_region, Sencode_coding_region, |
df7492f9 KH |
8327 | 3, 4, "r\nzCoding system: ", |
8328 | doc: /* Encode the current region by specified coding system. | |
48b0f3ae PJ |
8329 | When called from a program, takes three arguments: |
8330 | START, END, and CODING-SYSTEM. START and END are buffer positions. | |
d46c5b12 | 8331 | |
df7492f9 KH |
8332 | Optional 4th arguments DESTINATION specifies where the encoded text goes. |
8333 | If nil, the region between START and END is replace by the encoded text. | |
8334 | If buffer, the encoded text is inserted in the buffer. | |
8335 | If t, the encoded text is returned. | |
2391eaa4 | 8336 | |
48b0f3ae PJ |
8337 | This function sets `last-coding-system-used' to the precise coding system |
8338 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
8339 | not fully specified.) | |
8340 | It returns the length of the encoded text. */) | |
df7492f9 KH |
8341 | (start, end, coding_system, destination) |
8342 | Lisp_Object start, end, coding_system, destination; | |
3a73fa5d | 8343 | { |
df7492f9 | 8344 | return code_convert_region (start, end, coding_system, destination, 1, 0); |
b73bfc1c KH |
8345 | } |
8346 | ||
8347 | Lisp_Object | |
df7492f9 KH |
8348 | code_convert_string (string, coding_system, dst_object, |
8349 | encodep, nocopy, norecord) | |
8350 | Lisp_Object string, coding_system, dst_object; | |
8351 | int encodep, nocopy, norecord; | |
b73bfc1c | 8352 | { |
4031e2bf | 8353 | struct coding_system coding; |
df7492f9 | 8354 | EMACS_INT chars, bytes; |
ec6d2bb8 | 8355 | |
b7826503 | 8356 | CHECK_STRING (string); |
d46c5b12 | 8357 | if (NILP (coding_system)) |
4956c225 | 8358 | { |
df7492f9 KH |
8359 | if (! norecord) |
8360 | Vlast_coding_system_used = Qno_conversion; | |
8361 | if (NILP (dst_object)) | |
8362 | return (nocopy ? Fcopy_sequence (string) : string); | |
4956c225 | 8363 | } |
b73bfc1c | 8364 | |
df7492f9 KH |
8365 | if (NILP (coding_system)) |
8366 | coding_system = Qno_conversion; | |
8367 | else | |
8368 | CHECK_CODING_SYSTEM (coding_system); | |
8369 | if (NILP (dst_object)) | |
8370 | dst_object = Qt; | |
8371 | else if (! EQ (dst_object, Qt)) | |
8372 | CHECK_BUFFER (dst_object); | |
73be902c | 8373 | |
df7492f9 | 8374 | setup_coding_system (coding_system, &coding); |
d46c5b12 | 8375 | coding.mode |= CODING_MODE_LAST_BLOCK; |
8f924df7 KH |
8376 | chars = SCHARS (string); |
8377 | bytes = SBYTES (string); | |
df7492f9 KH |
8378 | if (encodep) |
8379 | encode_coding_object (&coding, string, 0, 0, chars, bytes, dst_object); | |
8380 | else | |
8381 | decode_coding_object (&coding, string, 0, 0, chars, bytes, dst_object); | |
8382 | if (! norecord) | |
8383 | Vlast_coding_system_used = CODING_ID_NAME (coding.id); | |
73be902c | 8384 | |
df7492f9 KH |
8385 | return (BUFFERP (dst_object) |
8386 | ? make_number (coding.produced_char) | |
8387 | : coding.dst_object); | |
4ed46869 | 8388 | } |
73be902c | 8389 | |
b73bfc1c | 8390 | |
ecec61c1 | 8391 | /* Encode or decode STRING according to CODING_SYSTEM. |
ec6d2bb8 | 8392 | Do not set Vlast_coding_system_used. |
4ed46869 | 8393 | |
ec6d2bb8 KH |
8394 | This function is called only from macros DECODE_FILE and |
8395 | ENCODE_FILE, thus we ignore character composition. */ | |
4ed46869 | 8396 | |
ecec61c1 KH |
8397 | Lisp_Object |
8398 | code_convert_string_norecord (string, coding_system, encodep) | |
8399 | Lisp_Object string, coding_system; | |
8400 | int encodep; | |
4ed46869 | 8401 | { |
0be8721c | 8402 | return code_convert_string (string, coding_system, Qt, encodep, 0, 1); |
4ed46869 KH |
8403 | } |
8404 | ||
4ed46869 | 8405 | |
df7492f9 KH |
8406 | DEFUN ("decode-coding-string", Fdecode_coding_string, Sdecode_coding_string, |
8407 | 2, 4, 0, | |
8408 | doc: /* Decode STRING which is encoded in CODING-SYSTEM, and return the result. | |
8409 | ||
8410 | Optional third arg NOCOPY non-nil means it is OK to return STRING itself | |
8411 | if the decoding operation is trivial. | |
ecec61c1 | 8412 | |
df7492f9 | 8413 | Optional fourth arg BUFFER non-nil meant that the decoded text is |
a3f6ee6d | 8414 | inserted in BUFFER instead of returned as a string. In this case, |
df7492f9 | 8415 | the return value is BUFFER. |
ecec61c1 | 8416 | |
df7492f9 KH |
8417 | This function sets `last-coding-system-used' to the precise coding system |
8418 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
8419 | not fully specified. */) | |
8420 | (string, coding_system, nocopy, buffer) | |
8421 | Lisp_Object string, coding_system, nocopy, buffer; | |
4ed46869 | 8422 | { |
df7492f9 KH |
8423 | return code_convert_string (string, coding_system, buffer, |
8424 | 0, ! NILP (nocopy), 0); | |
4ed46869 KH |
8425 | } |
8426 | ||
df7492f9 KH |
8427 | DEFUN ("encode-coding-string", Fencode_coding_string, Sencode_coding_string, |
8428 | 2, 4, 0, | |
8429 | doc: /* Encode STRING to CODING-SYSTEM, and return the result. | |
8430 | ||
8431 | Optional third arg NOCOPY non-nil means it is OK to return STRING | |
8432 | itself if the encoding operation is trivial. | |
8433 | ||
8434 | Optional fourth arg BUFFER non-nil meant that the encoded text is | |
a3f6ee6d | 8435 | inserted in BUFFER instead of returned as a string. In this case, |
df7492f9 KH |
8436 | the return value is BUFFER. |
8437 | ||
8438 | This function sets `last-coding-system-used' to the precise coding system | |
8439 | used (which may be different from CODING-SYSTEM if CODING-SYSTEM is | |
8440 | not fully specified.) */) | |
8441 | (string, coding_system, nocopy, buffer) | |
8442 | Lisp_Object string, coding_system, nocopy, buffer; | |
4ed46869 | 8443 | { |
df7492f9 | 8444 | return code_convert_string (string, coding_system, buffer, |
c197f191 | 8445 | 1, ! NILP (nocopy), 1); |
4ed46869 | 8446 | } |
df7492f9 | 8447 | |
3a73fa5d | 8448 | \f |
4ed46869 | 8449 | DEFUN ("decode-sjis-char", Fdecode_sjis_char, Sdecode_sjis_char, 1, 1, 0, |
48b0f3ae PJ |
8450 | doc: /* Decode a Japanese character which has CODE in shift_jis encoding. |
8451 | Return the corresponding character. */) | |
8452 | (code) | |
4ed46869 | 8453 | Lisp_Object code; |
4ed46869 | 8454 | { |
df7492f9 KH |
8455 | Lisp_Object spec, attrs, val; |
8456 | struct charset *charset_roman, *charset_kanji, *charset_kana, *charset; | |
8457 | int c; | |
4ed46869 | 8458 | |
df7492f9 KH |
8459 | CHECK_NATNUM (code); |
8460 | c = XFASTINT (code); | |
8461 | CHECK_CODING_SYSTEM_GET_SPEC (Vsjis_coding_system, spec); | |
8462 | attrs = AREF (spec, 0); | |
4ed46869 | 8463 | |
df7492f9 KH |
8464 | if (ASCII_BYTE_P (c) |
8465 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
8466 | return code; | |
4ed46869 | 8467 | |
df7492f9 KH |
8468 | val = CODING_ATTR_CHARSET_LIST (attrs); |
8469 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
004068e4 KH |
8470 | charset_kana = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); |
8471 | charset_kanji = CHARSET_FROM_ID (XINT (XCAR (val))); | |
fa42c37f | 8472 | |
df7492f9 KH |
8473 | if (c <= 0x7F) |
8474 | charset = charset_roman; | |
8475 | else if (c >= 0xA0 && c < 0xDF) | |
55ab7be3 | 8476 | { |
df7492f9 KH |
8477 | charset = charset_kana; |
8478 | c -= 0x80; | |
4ed46869 | 8479 | } |
55ab7be3 | 8480 | else |
4ed46869 | 8481 | { |
004068e4 | 8482 | int s1 = c >> 8, s2 = c & 0xFF; |
df7492f9 KH |
8483 | |
8484 | if (s1 < 0x81 || (s1 > 0x9F && s1 < 0xE0) || s1 > 0xEF | |
8485 | || s2 < 0x40 || s2 == 0x7F || s2 > 0xFC) | |
8486 | error ("Invalid code: %d", code); | |
8487 | SJIS_TO_JIS (c); | |
8488 | charset = charset_kanji; | |
4ed46869 | 8489 | } |
df7492f9 KH |
8490 | c = DECODE_CHAR (charset, c); |
8491 | if (c < 0) | |
8492 | error ("Invalid code: %d", code); | |
8493 | return make_number (c); | |
93dec019 | 8494 | } |
4ed46869 | 8495 | |
48b0f3ae | 8496 | |
4ed46869 | 8497 | DEFUN ("encode-sjis-char", Fencode_sjis_char, Sencode_sjis_char, 1, 1, 0, |
8acf0c0e | 8498 | doc: /* Encode a Japanese character CH to shift_jis encoding. |
48b0f3ae PJ |
8499 | Return the corresponding code in SJIS. */) |
8500 | (ch) | |
df7492f9 | 8501 | Lisp_Object ch; |
4ed46869 | 8502 | { |
df7492f9 KH |
8503 | Lisp_Object spec, attrs, charset_list; |
8504 | int c; | |
8505 | struct charset *charset; | |
8506 | unsigned code; | |
48b0f3ae | 8507 | |
df7492f9 KH |
8508 | CHECK_CHARACTER (ch); |
8509 | c = XFASTINT (ch); | |
8510 | CHECK_CODING_SYSTEM_GET_SPEC (Vsjis_coding_system, spec); | |
8511 | attrs = AREF (spec, 0); | |
8512 | ||
8513 | if (ASCII_CHAR_P (c) | |
8514 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
8515 | return ch; | |
8516 | ||
8517 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
8518 | charset = char_charset (c, charset_list, &code); | |
8519 | if (code == CHARSET_INVALID_CODE (charset)) | |
8520 | error ("Can't encode by shift_jis encoding: %d", c); | |
8521 | JIS_TO_SJIS (code); | |
8522 | ||
8523 | return make_number (code); | |
4ed46869 KH |
8524 | } |
8525 | ||
8526 | DEFUN ("decode-big5-char", Fdecode_big5_char, Sdecode_big5_char, 1, 1, 0, | |
48b0f3ae PJ |
8527 | doc: /* Decode a Big5 character which has CODE in BIG5 coding system. |
8528 | Return the corresponding character. */) | |
8529 | (code) | |
4ed46869 | 8530 | Lisp_Object code; |
d46c5b12 | 8531 | { |
df7492f9 KH |
8532 | Lisp_Object spec, attrs, val; |
8533 | struct charset *charset_roman, *charset_big5, *charset; | |
8534 | int c; | |
6289dd10 | 8535 | |
df7492f9 KH |
8536 | CHECK_NATNUM (code); |
8537 | c = XFASTINT (code); | |
8538 | CHECK_CODING_SYSTEM_GET_SPEC (Vbig5_coding_system, spec); | |
8539 | attrs = AREF (spec, 0); | |
4ed46869 | 8540 | |
df7492f9 KH |
8541 | if (ASCII_BYTE_P (c) |
8542 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
8543 | return code; | |
6289dd10 | 8544 | |
df7492f9 KH |
8545 | val = CODING_ATTR_CHARSET_LIST (attrs); |
8546 | charset_roman = CHARSET_FROM_ID (XINT (XCAR (val))), val = XCDR (val); | |
8547 | charset_big5 = CHARSET_FROM_ID (XINT (XCAR (val))); | |
c210f766 | 8548 | |
df7492f9 KH |
8549 | if (c <= 0x7F) |
8550 | charset = charset_roman; | |
c28a9453 KH |
8551 | else |
8552 | { | |
df7492f9 KH |
8553 | int b1 = c >> 8, b2 = c & 0x7F; |
8554 | if (b1 < 0xA1 || b1 > 0xFE | |
8555 | || b2 < 0x40 || (b2 > 0x7E && b2 < 0xA1) || b2 > 0xFE) | |
8556 | error ("Invalid code: %d", code); | |
8557 | charset = charset_big5; | |
c28a9453 | 8558 | } |
df7492f9 KH |
8559 | c = DECODE_CHAR (charset, (unsigned )c); |
8560 | if (c < 0) | |
8561 | error ("Invalid code: %d", code); | |
8562 | return make_number (c); | |
d46c5b12 | 8563 | } |
6289dd10 | 8564 | |
4ed46869 | 8565 | DEFUN ("encode-big5-char", Fencode_big5_char, Sencode_big5_char, 1, 1, 0, |
8acf0c0e | 8566 | doc: /* Encode the Big5 character CH to BIG5 coding system. |
48b0f3ae PJ |
8567 | Return the corresponding character code in Big5. */) |
8568 | (ch) | |
4ed46869 KH |
8569 | Lisp_Object ch; |
8570 | { | |
df7492f9 KH |
8571 | Lisp_Object spec, attrs, charset_list; |
8572 | struct charset *charset; | |
8573 | int c; | |
8574 | unsigned code; | |
8575 | ||
8576 | CHECK_CHARACTER (ch); | |
8577 | c = XFASTINT (ch); | |
8578 | CHECK_CODING_SYSTEM_GET_SPEC (Vbig5_coding_system, spec); | |
8579 | attrs = AREF (spec, 0); | |
8580 | if (ASCII_CHAR_P (c) | |
8581 | && ! NILP (CODING_ATTR_ASCII_COMPAT (attrs))) | |
8582 | return ch; | |
8583 | ||
8584 | charset_list = CODING_ATTR_CHARSET_LIST (attrs); | |
8585 | charset = char_charset (c, charset_list, &code); | |
8586 | if (code == CHARSET_INVALID_CODE (charset)) | |
8587 | error ("Can't encode by Big5 encoding: %d", c); | |
8588 | ||
8589 | return make_number (code); | |
4ed46869 | 8590 | } |
48b0f3ae | 8591 | |
3a73fa5d | 8592 | \f |
002fdb44 | 8593 | DEFUN ("set-terminal-coding-system-internal", Fset_terminal_coding_system_internal, |
68bba4e4 | 8594 | Sset_terminal_coding_system_internal, 1, 2, 0, |
48b0f3ae | 8595 | doc: /* Internal use only. */) |
6ed8eeff | 8596 | (coding_system, terminal) |
b74e4686 | 8597 | Lisp_Object coding_system; |
6ed8eeff | 8598 | Lisp_Object terminal; |
4ed46869 | 8599 | { |
6ed8eeff | 8600 | struct coding_system *terminal_coding = TERMINAL_TERMINAL_CODING (get_terminal (terminal, 1)); |
b7826503 | 8601 | CHECK_SYMBOL (coding_system); |
b8299c66 | 8602 | setup_coding_system (Fcheck_coding_system (coding_system), terminal_coding); |
70c22245 | 8603 | /* We had better not send unsafe characters to terminal. */ |
c73bd236 | 8604 | terminal_coding->mode |= CODING_MODE_SAFE_ENCODING; |
df7492f9 | 8605 | /* Characer composition should be disabled. */ |
c73bd236 | 8606 | terminal_coding->common_flags &= ~CODING_ANNOTATE_COMPOSITION_MASK; |
b8299c66 KL |
8607 | terminal_coding->src_multibyte = 1; |
8608 | terminal_coding->dst_multibyte = 0; | |
4ed46869 KH |
8609 | return Qnil; |
8610 | } | |
8611 | ||
c4825358 KH |
8612 | DEFUN ("set-safe-terminal-coding-system-internal", |
8613 | Fset_safe_terminal_coding_system_internal, | |
48b0f3ae | 8614 | Sset_safe_terminal_coding_system_internal, 1, 1, 0, |
ddb67bdc | 8615 | doc: /* Internal use only. */) |
48b0f3ae | 8616 | (coding_system) |
b74e4686 | 8617 | Lisp_Object coding_system; |
d46c5b12 | 8618 | { |
b7826503 | 8619 | CHECK_SYMBOL (coding_system); |
c4825358 KH |
8620 | setup_coding_system (Fcheck_coding_system (coding_system), |
8621 | &safe_terminal_coding); | |
df7492f9 KH |
8622 | /* Characer composition should be disabled. */ |
8623 | safe_terminal_coding.common_flags &= ~CODING_ANNOTATE_COMPOSITION_MASK; | |
b73bfc1c KH |
8624 | safe_terminal_coding.src_multibyte = 1; |
8625 | safe_terminal_coding.dst_multibyte = 0; | |
c4825358 KH |
8626 | return Qnil; |
8627 | } | |
4ed46869 | 8628 | |
002fdb44 | 8629 | DEFUN ("terminal-coding-system", Fterminal_coding_system, |
68bba4e4 | 8630 | Sterminal_coding_system, 0, 1, 0, |
6ed8eeff KL |
8631 | doc: /* Return coding system specified for terminal output on the given terminal. |
8632 | TERMINAL may be a terminal id, a frame, or nil for the selected | |
8633 | frame's terminal device. */) | |
8634 | (terminal) | |
8635 | Lisp_Object terminal; | |
4ed46869 | 8636 | { |
985773c9 MB |
8637 | struct coding_system *terminal_coding |
8638 | = TERMINAL_TERMINAL_CODING (get_terminal (terminal, 1)); | |
8639 | Lisp_Object coding_system = CODING_ID_NAME (terminal_coding->id); | |
ae6f73fa | 8640 | |
ae6f73fa | 8641 | /* For backward compatibility, return nil if it is `undecided'. */ |
f75c90a9 | 8642 | return (! EQ (coding_system, Qundecided) ? coding_system : Qnil); |
4ed46869 KH |
8643 | } |
8644 | ||
002fdb44 | 8645 | DEFUN ("set-keyboard-coding-system-internal", Fset_keyboard_coding_system_internal, |
68bba4e4 | 8646 | Sset_keyboard_coding_system_internal, 1, 2, 0, |
48b0f3ae | 8647 | doc: /* Internal use only. */) |
6ed8eeff | 8648 | (coding_system, terminal) |
4ed46869 | 8649 | Lisp_Object coding_system; |
6ed8eeff | 8650 | Lisp_Object terminal; |
4ed46869 | 8651 | { |
6ed8eeff | 8652 | struct terminal *t = get_terminal (terminal, 1); |
b7826503 | 8653 | CHECK_SYMBOL (coding_system); |
df7492f9 | 8654 | setup_coding_system (Fcheck_coding_system (coding_system), |
c73bd236 | 8655 | TERMINAL_KEYBOARD_CODING (t)); |
df7492f9 | 8656 | /* Characer composition should be disabled. */ |
c73bd236 MB |
8657 | TERMINAL_KEYBOARD_CODING (t)->common_flags |
8658 | &= ~CODING_ANNOTATE_COMPOSITION_MASK; | |
4ed46869 KH |
8659 | return Qnil; |
8660 | } | |
8661 | ||
8662 | DEFUN ("keyboard-coding-system", | |
985773c9 | 8663 | Fkeyboard_coding_system, Skeyboard_coding_system, 0, 1, 0, |
48b0f3ae | 8664 | doc: /* Return coding system specified for decoding keyboard input. */) |
985773c9 MB |
8665 | (terminal) |
8666 | Lisp_Object terminal; | |
4ed46869 | 8667 | { |
985773c9 MB |
8668 | return CODING_ID_NAME (TERMINAL_KEYBOARD_CODING |
8669 | (get_terminal (terminal, 1))->id); | |
4ed46869 KH |
8670 | } |
8671 | ||
4ed46869 | 8672 | \f |
a5d301df KH |
8673 | DEFUN ("find-operation-coding-system", Ffind_operation_coding_system, |
8674 | Sfind_operation_coding_system, 1, MANY, 0, | |
48b0f3ae PJ |
8675 | doc: /* Choose a coding system for an operation based on the target name. |
8676 | The value names a pair of coding systems: (DECODING-SYSTEM . ENCODING-SYSTEM). | |
8677 | DECODING-SYSTEM is the coding system to use for decoding | |
8678 | \(in case OPERATION does decoding), and ENCODING-SYSTEM is the coding system | |
8679 | for encoding (in case OPERATION does encoding). | |
05e6f5dc | 8680 | |
48b0f3ae PJ |
8681 | The first argument OPERATION specifies an I/O primitive: |
8682 | For file I/O, `insert-file-contents' or `write-region'. | |
8683 | For process I/O, `call-process', `call-process-region', or `start-process'. | |
8684 | For network I/O, `open-network-stream'. | |
05e6f5dc | 8685 | |
48b0f3ae PJ |
8686 | The remaining arguments should be the same arguments that were passed |
8687 | to the primitive. Depending on which primitive, one of those arguments | |
8688 | is selected as the TARGET. For example, if OPERATION does file I/O, | |
8689 | whichever argument specifies the file name is TARGET. | |
05e6f5dc | 8690 | |
48b0f3ae | 8691 | TARGET has a meaning which depends on OPERATION: |
b883cdb2 | 8692 | For file I/O, TARGET is a file name (except for the special case below). |
48b0f3ae PJ |
8693 | For process I/O, TARGET is a process name. |
8694 | For network I/O, TARGET is a service name or a port number | |
05e6f5dc | 8695 | |
48b0f3ae PJ |
8696 | This function looks up what specified for TARGET in, |
8697 | `file-coding-system-alist', `process-coding-system-alist', | |
8698 | or `network-coding-system-alist' depending on OPERATION. | |
8699 | They may specify a coding system, a cons of coding systems, | |
8700 | or a function symbol to call. | |
8701 | In the last case, we call the function with one argument, | |
8702 | which is a list of all the arguments given to this function. | |
1011c487 MB |
8703 | If the function can't decide a coding system, it can return |
8704 | `undecided' so that the normal code-detection is performed. | |
48b0f3ae | 8705 | |
b883cdb2 MB |
8706 | If OPERATION is `insert-file-contents', the argument corresponding to |
8707 | TARGET may be a cons (FILENAME . BUFFER). In that case, FILENAME is a | |
8708 | file name to look up, and BUFFER is a buffer that contains the file's | |
8709 | contents (not yet decoded). If `file-coding-system-alist' specifies a | |
8710 | function to call for FILENAME, that function should examine the | |
8711 | contents of BUFFER instead of reading the file. | |
8712 | ||
d918f936 | 8713 | usage: (find-operation-coding-system OPERATION ARGUMENTS...) */) |
48b0f3ae | 8714 | (nargs, args) |
4ed46869 KH |
8715 | int nargs; |
8716 | Lisp_Object *args; | |
6b89e3aa | 8717 | { |
4ed46869 KH |
8718 | Lisp_Object operation, target_idx, target, val; |
8719 | register Lisp_Object chain; | |
177c0ea7 | 8720 | |
4ed46869 KH |
8721 | if (nargs < 2) |
8722 | error ("Too few arguments"); | |
8723 | operation = args[0]; | |
8724 | if (!SYMBOLP (operation) | |
8725 | || !INTEGERP (target_idx = Fget (operation, Qtarget_idx))) | |
df7492f9 | 8726 | error ("Invalid first arguement"); |
4ed46869 KH |
8727 | if (nargs < 1 + XINT (target_idx)) |
8728 | error ("Too few arguments for operation: %s", | |
8f924df7 | 8729 | SDATA (SYMBOL_NAME (operation))); |
4ed46869 KH |
8730 | target = args[XINT (target_idx) + 1]; |
8731 | if (!(STRINGP (target) | |
091a0ff0 KH |
8732 | || (EQ (operation, Qinsert_file_contents) && CONSP (target) |
8733 | && STRINGP (XCAR (target)) && BUFFERP (XCDR (target))) | |
4ed46869 | 8734 | || (EQ (operation, Qopen_network_stream) && INTEGERP (target)))) |
df7492f9 | 8735 | error ("Invalid %dth argument", XINT (target_idx) + 1); |
091a0ff0 KH |
8736 | if (CONSP (target)) |
8737 | target = XCAR (target); | |
4ed46869 | 8738 | |
2e34157c RS |
8739 | chain = ((EQ (operation, Qinsert_file_contents) |
8740 | || EQ (operation, Qwrite_region)) | |
02ba4723 | 8741 | ? Vfile_coding_system_alist |
2e34157c | 8742 | : (EQ (operation, Qopen_network_stream) |
02ba4723 KH |
8743 | ? Vnetwork_coding_system_alist |
8744 | : Vprocess_coding_system_alist)); | |
4ed46869 KH |
8745 | if (NILP (chain)) |
8746 | return Qnil; | |
8747 | ||
03699b14 | 8748 | for (; CONSP (chain); chain = XCDR (chain)) |
6b89e3aa | 8749 | { |
f44d27ce | 8750 | Lisp_Object elt; |
6b89e3aa | 8751 | |
df7492f9 | 8752 | elt = XCAR (chain); |
4ed46869 KH |
8753 | if (CONSP (elt) |
8754 | && ((STRINGP (target) | |
03699b14 KR |
8755 | && STRINGP (XCAR (elt)) |
8756 | && fast_string_match (XCAR (elt), target) >= 0) | |
8757 | || (INTEGERP (target) && EQ (target, XCAR (elt))))) | |
6b89e3aa | 8758 | { |
03699b14 | 8759 | val = XCDR (elt); |
b19fd4c5 KH |
8760 | /* Here, if VAL is both a valid coding system and a valid |
8761 | function symbol, we return VAL as a coding system. */ | |
02ba4723 KH |
8762 | if (CONSP (val)) |
8763 | return val; | |
8764 | if (! SYMBOLP (val)) | |
8765 | return Qnil; | |
8766 | if (! NILP (Fcoding_system_p (val))) | |
8767 | return Fcons (val, val); | |
b19fd4c5 | 8768 | if (! NILP (Ffboundp (val))) |
6b89e3aa | 8769 | { |
e2b97060 MB |
8770 | /* We use call1 rather than safe_call1 |
8771 | so as to get bug reports about functions called here | |
8772 | which don't handle the current interface. */ | |
8773 | val = call1 (val, Flist (nargs, args)); | |
b19fd4c5 KH |
8774 | if (CONSP (val)) |
8775 | return val; | |
8776 | if (SYMBOLP (val) && ! NILP (Fcoding_system_p (val))) | |
8777 | return Fcons (val, val); | |
6b89e3aa | 8778 | } |
02ba4723 | 8779 | return Qnil; |
6b89e3aa KH |
8780 | } |
8781 | } | |
4ed46869 | 8782 | return Qnil; |
6b89e3aa KH |
8783 | } |
8784 | ||
df7492f9 | 8785 | DEFUN ("set-coding-system-priority", Fset_coding_system_priority, |
a3f6ee6d | 8786 | Sset_coding_system_priority, 0, MANY, 0, |
da7db224 | 8787 | doc: /* Assign higher priority to the coding systems given as arguments. |
ff563fce | 8788 | If multiple coding systems belongs to the same category, |
a3181084 DL |
8789 | all but the first one are ignored. |
8790 | ||
8791 | usage: (set-coding-system-priority ...) */) | |
df7492f9 KH |
8792 | (nargs, args) |
8793 | int nargs; | |
8794 | Lisp_Object *args; | |
8795 | { | |
8796 | int i, j; | |
8797 | int changed[coding_category_max]; | |
8798 | enum coding_category priorities[coding_category_max]; | |
8799 | ||
8800 | bzero (changed, sizeof changed); | |
6b89e3aa | 8801 | |
df7492f9 | 8802 | for (i = j = 0; i < nargs; i++) |
6b89e3aa | 8803 | { |
df7492f9 KH |
8804 | enum coding_category category; |
8805 | Lisp_Object spec, attrs; | |
6b89e3aa | 8806 | |
df7492f9 KH |
8807 | CHECK_CODING_SYSTEM_GET_SPEC (args[i], spec); |
8808 | attrs = AREF (spec, 0); | |
8809 | category = XINT (CODING_ATTR_CATEGORY (attrs)); | |
8810 | if (changed[category]) | |
8811 | /* Ignore this coding system because a coding system of the | |
8812 | same category already had a higher priority. */ | |
8813 | continue; | |
8814 | changed[category] = 1; | |
8815 | priorities[j++] = category; | |
8816 | if (coding_categories[category].id >= 0 | |
8817 | && ! EQ (args[i], CODING_ID_NAME (coding_categories[category].id))) | |
8818 | setup_coding_system (args[i], &coding_categories[category]); | |
ff563fce | 8819 | Fset (AREF (Vcoding_category_table, category), args[i]); |
df7492f9 | 8820 | } |
6b89e3aa | 8821 | |
df7492f9 KH |
8822 | /* Now we have decided top J priorities. Reflect the order of the |
8823 | original priorities to the remaining priorities. */ | |
6b89e3aa | 8824 | |
df7492f9 | 8825 | for (i = j, j = 0; i < coding_category_max; i++, j++) |
6b89e3aa | 8826 | { |
df7492f9 KH |
8827 | while (j < coding_category_max |
8828 | && changed[coding_priorities[j]]) | |
8829 | j++; | |
8830 | if (j == coding_category_max) | |
8831 | abort (); | |
8832 | priorities[i] = coding_priorities[j]; | |
8833 | } | |
6b89e3aa | 8834 | |
df7492f9 | 8835 | bcopy (priorities, coding_priorities, sizeof priorities); |
177c0ea7 | 8836 | |
ff563fce KH |
8837 | /* Update `coding-category-list'. */ |
8838 | Vcoding_category_list = Qnil; | |
8839 | for (i = coding_category_max - 1; i >= 0; i--) | |
8840 | Vcoding_category_list | |
8841 | = Fcons (AREF (Vcoding_category_table, priorities[i]), | |
8842 | Vcoding_category_list); | |
6b89e3aa | 8843 | |
df7492f9 | 8844 | return Qnil; |
6b89e3aa KH |
8845 | } |
8846 | ||
df7492f9 KH |
8847 | DEFUN ("coding-system-priority-list", Fcoding_system_priority_list, |
8848 | Scoding_system_priority_list, 0, 1, 0, | |
da7db224 DL |
8849 | doc: /* Return a list of coding systems ordered by their priorities. |
8850 | HIGHESTP non-nil means just return the highest priority one. */) | |
df7492f9 KH |
8851 | (highestp) |
8852 | Lisp_Object highestp; | |
d46c5b12 KH |
8853 | { |
8854 | int i; | |
df7492f9 | 8855 | Lisp_Object val; |
6b89e3aa | 8856 | |
df7492f9 | 8857 | for (i = 0, val = Qnil; i < coding_category_max; i++) |
d46c5b12 | 8858 | { |
df7492f9 KH |
8859 | enum coding_category category = coding_priorities[i]; |
8860 | int id = coding_categories[category].id; | |
8861 | Lisp_Object attrs; | |
068a9dbd | 8862 | |
df7492f9 KH |
8863 | if (id < 0) |
8864 | continue; | |
8865 | attrs = CODING_ID_ATTRS (id); | |
8866 | if (! NILP (highestp)) | |
8867 | return CODING_ATTR_BASE_NAME (attrs); | |
8868 | val = Fcons (CODING_ATTR_BASE_NAME (attrs), val); | |
8869 | } | |
8870 | return Fnreverse (val); | |
8871 | } | |
068a9dbd | 8872 | |
f0064e1f | 8873 | static char *suffixes[] = { "-unix", "-dos", "-mac" }; |
068a9dbd KH |
8874 | |
8875 | static Lisp_Object | |
df7492f9 KH |
8876 | make_subsidiaries (base) |
8877 | Lisp_Object base; | |
068a9dbd | 8878 | { |
df7492f9 | 8879 | Lisp_Object subsidiaries; |
8f924df7 | 8880 | int base_name_len = SBYTES (SYMBOL_NAME (base)); |
df7492f9 KH |
8881 | char *buf = (char *) alloca (base_name_len + 6); |
8882 | int i; | |
068a9dbd | 8883 | |
8f924df7 | 8884 | bcopy (SDATA (SYMBOL_NAME (base)), buf, base_name_len); |
df7492f9 KH |
8885 | subsidiaries = Fmake_vector (make_number (3), Qnil); |
8886 | for (i = 0; i < 3; i++) | |
068a9dbd | 8887 | { |
df7492f9 KH |
8888 | bcopy (suffixes[i], buf + base_name_len, strlen (suffixes[i]) + 1); |
8889 | ASET (subsidiaries, i, intern (buf)); | |
068a9dbd | 8890 | } |
df7492f9 | 8891 | return subsidiaries; |
068a9dbd KH |
8892 | } |
8893 | ||
8894 | ||
df7492f9 KH |
8895 | DEFUN ("define-coding-system-internal", Fdefine_coding_system_internal, |
8896 | Sdefine_coding_system_internal, coding_arg_max, MANY, 0, | |
1fcd6c8b DL |
8897 | doc: /* For internal use only. |
8898 | usage: (define-coding-system-internal ...) */) | |
df7492f9 KH |
8899 | (nargs, args) |
8900 | int nargs; | |
8901 | Lisp_Object *args; | |
068a9dbd | 8902 | { |
df7492f9 KH |
8903 | Lisp_Object name; |
8904 | Lisp_Object spec_vec; /* [ ATTRS ALIASE EOL_TYPE ] */ | |
8905 | Lisp_Object attrs; /* Vector of attributes. */ | |
8906 | Lisp_Object eol_type; | |
8907 | Lisp_Object aliases; | |
8908 | Lisp_Object coding_type, charset_list, safe_charsets; | |
8909 | enum coding_category category; | |
8910 | Lisp_Object tail, val; | |
8911 | int max_charset_id = 0; | |
8912 | int i; | |
068a9dbd | 8913 | |
df7492f9 KH |
8914 | if (nargs < coding_arg_max) |
8915 | goto short_args; | |
068a9dbd | 8916 | |
df7492f9 | 8917 | attrs = Fmake_vector (make_number (coding_attr_last_index), Qnil); |
068a9dbd | 8918 | |
df7492f9 KH |
8919 | name = args[coding_arg_name]; |
8920 | CHECK_SYMBOL (name); | |
8921 | CODING_ATTR_BASE_NAME (attrs) = name; | |
068a9dbd | 8922 | |
df7492f9 KH |
8923 | val = args[coding_arg_mnemonic]; |
8924 | if (! STRINGP (val)) | |
8925 | CHECK_CHARACTER (val); | |
8926 | CODING_ATTR_MNEMONIC (attrs) = val; | |
068a9dbd | 8927 | |
df7492f9 KH |
8928 | coding_type = args[coding_arg_coding_type]; |
8929 | CHECK_SYMBOL (coding_type); | |
8930 | CODING_ATTR_TYPE (attrs) = coding_type; | |
068a9dbd | 8931 | |
df7492f9 KH |
8932 | charset_list = args[coding_arg_charset_list]; |
8933 | if (SYMBOLP (charset_list)) | |
8934 | { | |
8935 | if (EQ (charset_list, Qiso_2022)) | |
8936 | { | |
8937 | if (! EQ (coding_type, Qiso_2022)) | |
8938 | error ("Invalid charset-list"); | |
8939 | charset_list = Viso_2022_charset_list; | |
8940 | } | |
8941 | else if (EQ (charset_list, Qemacs_mule)) | |
8942 | { | |
8943 | if (! EQ (coding_type, Qemacs_mule)) | |
8944 | error ("Invalid charset-list"); | |
8945 | charset_list = Vemacs_mule_charset_list; | |
8946 | } | |
8947 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
8948 | if (max_charset_id < XFASTINT (XCAR (tail))) | |
8949 | max_charset_id = XFASTINT (XCAR (tail)); | |
8950 | } | |
068a9dbd KH |
8951 | else |
8952 | { | |
df7492f9 | 8953 | charset_list = Fcopy_sequence (charset_list); |
985773c9 | 8954 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) |
068a9dbd | 8955 | { |
df7492f9 KH |
8956 | struct charset *charset; |
8957 | ||
985773c9 | 8958 | val = XCAR (tail); |
df7492f9 KH |
8959 | CHECK_CHARSET_GET_CHARSET (val, charset); |
8960 | if (EQ (coding_type, Qiso_2022) | |
8961 | ? CHARSET_ISO_FINAL (charset) < 0 | |
8962 | : EQ (coding_type, Qemacs_mule) | |
8963 | ? CHARSET_EMACS_MULE_ID (charset) < 0 | |
8964 | : 0) | |
8965 | error ("Can't handle charset `%s'", | |
8f924df7 | 8966 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
df7492f9 | 8967 | |
8f924df7 | 8968 | XSETCAR (tail, make_number (charset->id)); |
df7492f9 KH |
8969 | if (max_charset_id < charset->id) |
8970 | max_charset_id = charset->id; | |
068a9dbd KH |
8971 | } |
8972 | } | |
df7492f9 | 8973 | CODING_ATTR_CHARSET_LIST (attrs) = charset_list; |
068a9dbd | 8974 | |
df7492f9 KH |
8975 | safe_charsets = Fmake_string (make_number (max_charset_id + 1), |
8976 | make_number (255)); | |
8977 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) | |
8f924df7 | 8978 | SSET (safe_charsets, XFASTINT (XCAR (tail)), 0); |
df7492f9 | 8979 | CODING_ATTR_SAFE_CHARSETS (attrs) = safe_charsets; |
068a9dbd | 8980 | |
584948ac | 8981 | CODING_ATTR_ASCII_COMPAT (attrs) = args[coding_arg_ascii_compatible_p]; |
3a73fa5d | 8982 | |
df7492f9 | 8983 | val = args[coding_arg_decode_translation_table]; |
a6f87d34 | 8984 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) |
7d64c6ad | 8985 | CHECK_SYMBOL (val); |
df7492f9 | 8986 | CODING_ATTR_DECODE_TBL (attrs) = val; |
3a73fa5d | 8987 | |
df7492f9 | 8988 | val = args[coding_arg_encode_translation_table]; |
a6f87d34 | 8989 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) |
7d64c6ad | 8990 | CHECK_SYMBOL (val); |
df7492f9 | 8991 | CODING_ATTR_ENCODE_TBL (attrs) = val; |
d46c5b12 | 8992 | |
df7492f9 KH |
8993 | val = args[coding_arg_post_read_conversion]; |
8994 | CHECK_SYMBOL (val); | |
8995 | CODING_ATTR_POST_READ (attrs) = val; | |
d46c5b12 | 8996 | |
df7492f9 KH |
8997 | val = args[coding_arg_pre_write_conversion]; |
8998 | CHECK_SYMBOL (val); | |
8999 | CODING_ATTR_PRE_WRITE (attrs) = val; | |
3a73fa5d | 9000 | |
df7492f9 KH |
9001 | val = args[coding_arg_default_char]; |
9002 | if (NILP (val)) | |
9003 | CODING_ATTR_DEFAULT_CHAR (attrs) = make_number (' '); | |
9004 | else | |
9005 | { | |
8f924df7 | 9006 | CHECK_CHARACTER (val); |
df7492f9 KH |
9007 | CODING_ATTR_DEFAULT_CHAR (attrs) = val; |
9008 | } | |
4031e2bf | 9009 | |
8f924df7 KH |
9010 | val = args[coding_arg_for_unibyte]; |
9011 | CODING_ATTR_FOR_UNIBYTE (attrs) = NILP (val) ? Qnil : Qt; | |
3a73fa5d | 9012 | |
df7492f9 KH |
9013 | val = args[coding_arg_plist]; |
9014 | CHECK_LIST (val); | |
9015 | CODING_ATTR_PLIST (attrs) = val; | |
3a73fa5d | 9016 | |
df7492f9 KH |
9017 | if (EQ (coding_type, Qcharset)) |
9018 | { | |
c7c66a95 KH |
9019 | /* Generate a lisp vector of 256 elements. Each element is nil, |
9020 | integer, or a list of charset IDs. | |
3a73fa5d | 9021 | |
c7c66a95 KH |
9022 | If Nth element is nil, the byte code N is invalid in this |
9023 | coding system. | |
4ed46869 | 9024 | |
c7c66a95 KH |
9025 | If Nth element is a number NUM, N is the first byte of a |
9026 | charset whose ID is NUM. | |
4ed46869 | 9027 | |
c7c66a95 KH |
9028 | If Nth element is a list of charset IDs, N is the first byte |
9029 | of one of them. The list is sorted by dimensions of the | |
2bc515e4 | 9030 | charsets. A charset of smaller dimension comes firtst. */ |
df7492f9 | 9031 | val = Fmake_vector (make_number (256), Qnil); |
4ed46869 | 9032 | |
5c99c2e6 | 9033 | for (tail = charset_list; CONSP (tail); tail = XCDR (tail)) |
df7492f9 | 9034 | { |
c7c66a95 KH |
9035 | struct charset *charset = CHARSET_FROM_ID (XFASTINT (XCAR (tail))); |
9036 | int dim = CHARSET_DIMENSION (charset); | |
9037 | int idx = (dim - 1) * 4; | |
4ed46869 | 9038 | |
5c99c2e6 | 9039 | if (CHARSET_ASCII_COMPATIBLE_P (charset)) |
584948ac | 9040 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; |
4031e2bf | 9041 | |
15d143f7 KH |
9042 | for (i = charset->code_space[idx]; |
9043 | i <= charset->code_space[idx + 1]; i++) | |
9044 | { | |
c7c66a95 KH |
9045 | Lisp_Object tmp, tmp2; |
9046 | int dim2; | |
ec6d2bb8 | 9047 | |
c7c66a95 KH |
9048 | tmp = AREF (val, i); |
9049 | if (NILP (tmp)) | |
9050 | tmp = XCAR (tail); | |
9051 | else if (NUMBERP (tmp)) | |
9052 | { | |
9053 | dim2 = CHARSET_DIMENSION (CHARSET_FROM_ID (XFASTINT (tmp))); | |
9054 | if (dim < dim2) | |
c7c66a95 | 9055 | tmp = Fcons (XCAR (tail), Fcons (tmp, Qnil)); |
f9d71dcd KH |
9056 | else |
9057 | tmp = Fcons (tmp, Fcons (XCAR (tail), Qnil)); | |
c7c66a95 | 9058 | } |
15d143f7 | 9059 | else |
c7c66a95 KH |
9060 | { |
9061 | for (tmp2 = tmp; CONSP (tmp2); tmp2 = XCDR (tmp2)) | |
9062 | { | |
9063 | dim2 = CHARSET_DIMENSION (CHARSET_FROM_ID (XFASTINT (XCAR (tmp2)))); | |
9064 | if (dim < dim2) | |
9065 | break; | |
9066 | } | |
9067 | if (NILP (tmp2)) | |
9068 | tmp = nconc2 (tmp, Fcons (XCAR (tail), Qnil)); | |
9069 | else | |
9070 | { | |
9071 | XSETCDR (tmp2, Fcons (XCAR (tmp2), XCDR (tmp2))); | |
9072 | XSETCAR (tmp2, XCAR (tail)); | |
9073 | } | |
9074 | } | |
9075 | ASET (val, i, tmp); | |
15d143f7 | 9076 | } |
df7492f9 KH |
9077 | } |
9078 | ASET (attrs, coding_attr_charset_valids, val); | |
9079 | category = coding_category_charset; | |
9080 | } | |
9081 | else if (EQ (coding_type, Qccl)) | |
9082 | { | |
9083 | Lisp_Object valids; | |
ecec61c1 | 9084 | |
df7492f9 KH |
9085 | if (nargs < coding_arg_ccl_max) |
9086 | goto short_args; | |
ecec61c1 | 9087 | |
df7492f9 KH |
9088 | val = args[coding_arg_ccl_decoder]; |
9089 | CHECK_CCL_PROGRAM (val); | |
9090 | if (VECTORP (val)) | |
9091 | val = Fcopy_sequence (val); | |
9092 | ASET (attrs, coding_attr_ccl_decoder, val); | |
ecec61c1 | 9093 | |
df7492f9 KH |
9094 | val = args[coding_arg_ccl_encoder]; |
9095 | CHECK_CCL_PROGRAM (val); | |
9096 | if (VECTORP (val)) | |
9097 | val = Fcopy_sequence (val); | |
9098 | ASET (attrs, coding_attr_ccl_encoder, val); | |
ecec61c1 | 9099 | |
df7492f9 KH |
9100 | val = args[coding_arg_ccl_valids]; |
9101 | valids = Fmake_string (make_number (256), make_number (0)); | |
9102 | for (tail = val; !NILP (tail); tail = Fcdr (tail)) | |
9103 | { | |
8dcbea82 | 9104 | int from, to; |
ecec61c1 | 9105 | |
df7492f9 KH |
9106 | val = Fcar (tail); |
9107 | if (INTEGERP (val)) | |
8dcbea82 KH |
9108 | { |
9109 | from = to = XINT (val); | |
9110 | if (from < 0 || from > 255) | |
9111 | args_out_of_range_3 (val, make_number (0), make_number (255)); | |
9112 | } | |
df7492f9 KH |
9113 | else |
9114 | { | |
df7492f9 | 9115 | CHECK_CONS (val); |
8f924df7 KH |
9116 | CHECK_NATNUM_CAR (val); |
9117 | CHECK_NATNUM_CDR (val); | |
df7492f9 | 9118 | from = XINT (XCAR (val)); |
8f924df7 | 9119 | if (from > 255) |
8dcbea82 KH |
9120 | args_out_of_range_3 (XCAR (val), |
9121 | make_number (0), make_number (255)); | |
df7492f9 | 9122 | to = XINT (XCDR (val)); |
8dcbea82 KH |
9123 | if (to < from || to > 255) |
9124 | args_out_of_range_3 (XCDR (val), | |
9125 | XCAR (val), make_number (255)); | |
df7492f9 | 9126 | } |
8dcbea82 | 9127 | for (i = from; i <= to; i++) |
8f924df7 | 9128 | SSET (valids, i, 1); |
df7492f9 KH |
9129 | } |
9130 | ASET (attrs, coding_attr_ccl_valids, valids); | |
4ed46869 | 9131 | |
df7492f9 | 9132 | category = coding_category_ccl; |
55ab7be3 | 9133 | } |
df7492f9 | 9134 | else if (EQ (coding_type, Qutf_16)) |
55ab7be3 | 9135 | { |
df7492f9 | 9136 | Lisp_Object bom, endian; |
4ed46869 | 9137 | |
584948ac | 9138 | CODING_ATTR_ASCII_COMPAT (attrs) = Qnil; |
4ed46869 | 9139 | |
df7492f9 KH |
9140 | if (nargs < coding_arg_utf16_max) |
9141 | goto short_args; | |
4ed46869 | 9142 | |
df7492f9 KH |
9143 | bom = args[coding_arg_utf16_bom]; |
9144 | if (! NILP (bom) && ! EQ (bom, Qt)) | |
9145 | { | |
9146 | CHECK_CONS (bom); | |
8f924df7 KH |
9147 | val = XCAR (bom); |
9148 | CHECK_CODING_SYSTEM (val); | |
9149 | val = XCDR (bom); | |
9150 | CHECK_CODING_SYSTEM (val); | |
df7492f9 KH |
9151 | } |
9152 | ASET (attrs, coding_attr_utf_16_bom, bom); | |
9153 | ||
9154 | endian = args[coding_arg_utf16_endian]; | |
b49a1807 KH |
9155 | CHECK_SYMBOL (endian); |
9156 | if (NILP (endian)) | |
9157 | endian = Qbig; | |
9158 | else if (! EQ (endian, Qbig) && ! EQ (endian, Qlittle)) | |
8f924df7 | 9159 | error ("Invalid endian: %s", SDATA (SYMBOL_NAME (endian))); |
df7492f9 KH |
9160 | ASET (attrs, coding_attr_utf_16_endian, endian); |
9161 | ||
9162 | category = (CONSP (bom) | |
9163 | ? coding_category_utf_16_auto | |
9164 | : NILP (bom) | |
b49a1807 | 9165 | ? (EQ (endian, Qbig) |
df7492f9 KH |
9166 | ? coding_category_utf_16_be_nosig |
9167 | : coding_category_utf_16_le_nosig) | |
b49a1807 | 9168 | : (EQ (endian, Qbig) |
df7492f9 KH |
9169 | ? coding_category_utf_16_be |
9170 | : coding_category_utf_16_le)); | |
9171 | } | |
9172 | else if (EQ (coding_type, Qiso_2022)) | |
9173 | { | |
9174 | Lisp_Object initial, reg_usage, request, flags; | |
4776e638 | 9175 | int i; |
1397dc18 | 9176 | |
df7492f9 KH |
9177 | if (nargs < coding_arg_iso2022_max) |
9178 | goto short_args; | |
9179 | ||
9180 | initial = Fcopy_sequence (args[coding_arg_iso2022_initial]); | |
9181 | CHECK_VECTOR (initial); | |
9182 | for (i = 0; i < 4; i++) | |
9183 | { | |
9184 | val = Faref (initial, make_number (i)); | |
9185 | if (! NILP (val)) | |
9186 | { | |
584948ac KH |
9187 | struct charset *charset; |
9188 | ||
9189 | CHECK_CHARSET_GET_CHARSET (val, charset); | |
9190 | ASET (initial, i, make_number (CHARSET_ID (charset))); | |
9191 | if (i == 0 && CHARSET_ASCII_COMPATIBLE_P (charset)) | |
9192 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
df7492f9 KH |
9193 | } |
9194 | else | |
9195 | ASET (initial, i, make_number (-1)); | |
9196 | } | |
9197 | ||
9198 | reg_usage = args[coding_arg_iso2022_reg_usage]; | |
9199 | CHECK_CONS (reg_usage); | |
8f924df7 KH |
9200 | CHECK_NUMBER_CAR (reg_usage); |
9201 | CHECK_NUMBER_CDR (reg_usage); | |
df7492f9 KH |
9202 | |
9203 | request = Fcopy_sequence (args[coding_arg_iso2022_request]); | |
9204 | for (tail = request; ! NILP (tail); tail = Fcdr (tail)) | |
1397dc18 | 9205 | { |
df7492f9 | 9206 | int id; |
8f924df7 | 9207 | Lisp_Object tmp; |
df7492f9 KH |
9208 | |
9209 | val = Fcar (tail); | |
9210 | CHECK_CONS (val); | |
8f924df7 KH |
9211 | tmp = XCAR (val); |
9212 | CHECK_CHARSET_GET_ID (tmp, id); | |
9213 | CHECK_NATNUM_CDR (val); | |
df7492f9 KH |
9214 | if (XINT (XCDR (val)) >= 4) |
9215 | error ("Invalid graphic register number: %d", XINT (XCDR (val))); | |
8f924df7 | 9216 | XSETCAR (val, make_number (id)); |
1397dc18 | 9217 | } |
4ed46869 | 9218 | |
df7492f9 KH |
9219 | flags = args[coding_arg_iso2022_flags]; |
9220 | CHECK_NATNUM (flags); | |
9221 | i = XINT (flags); | |
9222 | if (EQ (args[coding_arg_charset_list], Qiso_2022)) | |
9223 | flags = make_number (i | CODING_ISO_FLAG_FULL_SUPPORT); | |
9224 | ||
9225 | ASET (attrs, coding_attr_iso_initial, initial); | |
9226 | ASET (attrs, coding_attr_iso_usage, reg_usage); | |
9227 | ASET (attrs, coding_attr_iso_request, request); | |
9228 | ASET (attrs, coding_attr_iso_flags, flags); | |
9229 | setup_iso_safe_charsets (attrs); | |
9230 | ||
9231 | if (i & CODING_ISO_FLAG_SEVEN_BITS) | |
9232 | category = ((i & (CODING_ISO_FLAG_LOCKING_SHIFT | |
9233 | | CODING_ISO_FLAG_SINGLE_SHIFT)) | |
9234 | ? coding_category_iso_7_else | |
9235 | : EQ (args[coding_arg_charset_list], Qiso_2022) | |
9236 | ? coding_category_iso_7 | |
9237 | : coding_category_iso_7_tight); | |
9238 | else | |
9239 | { | |
9240 | int id = XINT (AREF (initial, 1)); | |
9241 | ||
c6fb6e98 | 9242 | category = (((i & CODING_ISO_FLAG_LOCKING_SHIFT) |
df7492f9 KH |
9243 | || EQ (args[coding_arg_charset_list], Qiso_2022) |
9244 | || id < 0) | |
9245 | ? coding_category_iso_8_else | |
9246 | : (CHARSET_DIMENSION (CHARSET_FROM_ID (id)) == 1) | |
9247 | ? coding_category_iso_8_1 | |
9248 | : coding_category_iso_8_2); | |
9249 | } | |
0ce7886f KH |
9250 | if (category != coding_category_iso_8_1 |
9251 | && category != coding_category_iso_8_2) | |
9252 | CODING_ATTR_ASCII_COMPAT (attrs) = Qnil; | |
df7492f9 KH |
9253 | } |
9254 | else if (EQ (coding_type, Qemacs_mule)) | |
c28a9453 | 9255 | { |
df7492f9 KH |
9256 | if (EQ (args[coding_arg_charset_list], Qemacs_mule)) |
9257 | ASET (attrs, coding_attr_emacs_mule_full, Qt); | |
584948ac | 9258 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; |
df7492f9 | 9259 | category = coding_category_emacs_mule; |
c28a9453 | 9260 | } |
df7492f9 | 9261 | else if (EQ (coding_type, Qshift_jis)) |
c28a9453 | 9262 | { |
df7492f9 KH |
9263 | |
9264 | struct charset *charset; | |
9265 | ||
7d64c6ad | 9266 | if (XINT (Flength (charset_list)) != 3 |
6e07c25f | 9267 | && XINT (Flength (charset_list)) != 4) |
7d64c6ad | 9268 | error ("There should be three or four charsets"); |
df7492f9 KH |
9269 | |
9270 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9271 | if (CHARSET_DIMENSION (charset) != 1) | |
9272 | error ("Dimension of charset %s is not one", | |
8f924df7 | 9273 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
584948ac KH |
9274 | if (CHARSET_ASCII_COMPATIBLE_P (charset)) |
9275 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
df7492f9 KH |
9276 | |
9277 | charset_list = XCDR (charset_list); | |
9278 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9279 | if (CHARSET_DIMENSION (charset) != 1) | |
9280 | error ("Dimension of charset %s is not one", | |
8f924df7 | 9281 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
df7492f9 KH |
9282 | |
9283 | charset_list = XCDR (charset_list); | |
9284 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9285 | if (CHARSET_DIMENSION (charset) != 2) | |
7d64c6ad KH |
9286 | error ("Dimension of charset %s is not two", |
9287 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); | |
9288 | ||
9289 | charset_list = XCDR (charset_list); | |
2b917a06 KH |
9290 | if (! NILP (charset_list)) |
9291 | { | |
9292 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9293 | if (CHARSET_DIMENSION (charset) != 2) | |
9294 | error ("Dimension of charset %s is not two", | |
9295 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); | |
9296 | } | |
df7492f9 KH |
9297 | |
9298 | category = coding_category_sjis; | |
9299 | Vsjis_coding_system = name; | |
c28a9453 | 9300 | } |
df7492f9 KH |
9301 | else if (EQ (coding_type, Qbig5)) |
9302 | { | |
9303 | struct charset *charset; | |
4ed46869 | 9304 | |
df7492f9 KH |
9305 | if (XINT (Flength (charset_list)) != 2) |
9306 | error ("There should be just two charsets"); | |
9307 | ||
9308 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9309 | if (CHARSET_DIMENSION (charset) != 1) | |
9310 | error ("Dimension of charset %s is not one", | |
8f924df7 | 9311 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
584948ac KH |
9312 | if (CHARSET_ASCII_COMPATIBLE_P (charset)) |
9313 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
df7492f9 KH |
9314 | |
9315 | charset_list = XCDR (charset_list); | |
9316 | charset = CHARSET_FROM_ID (XINT (XCAR (charset_list))); | |
9317 | if (CHARSET_DIMENSION (charset) != 2) | |
9318 | error ("Dimension of charset %s is not two", | |
8f924df7 | 9319 | SDATA (SYMBOL_NAME (CHARSET_NAME (charset)))); |
4ed46869 | 9320 | |
df7492f9 KH |
9321 | category = coding_category_big5; |
9322 | Vbig5_coding_system = name; | |
9323 | } | |
9324 | else if (EQ (coding_type, Qraw_text)) | |
c28a9453 | 9325 | { |
584948ac KH |
9326 | category = coding_category_raw_text; |
9327 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
c28a9453 | 9328 | } |
df7492f9 | 9329 | else if (EQ (coding_type, Qutf_8)) |
4ed46869 | 9330 | { |
584948ac KH |
9331 | category = coding_category_utf_8; |
9332 | CODING_ATTR_ASCII_COMPAT (attrs) = Qt; | |
4ed46869 | 9333 | } |
df7492f9 KH |
9334 | else if (EQ (coding_type, Qundecided)) |
9335 | category = coding_category_undecided; | |
4ed46869 | 9336 | else |
df7492f9 | 9337 | error ("Invalid coding system type: %s", |
8f924df7 | 9338 | SDATA (SYMBOL_NAME (coding_type))); |
4ed46869 | 9339 | |
df7492f9 | 9340 | CODING_ATTR_CATEGORY (attrs) = make_number (category); |
01378f49 KH |
9341 | CODING_ATTR_PLIST (attrs) |
9342 | = Fcons (QCcategory, Fcons (AREF (Vcoding_category_table, category), | |
9343 | CODING_ATTR_PLIST (attrs))); | |
35befdaa KH |
9344 | CODING_ATTR_PLIST (attrs) |
9345 | = Fcons (QCascii_compatible_p, | |
9346 | Fcons (CODING_ATTR_ASCII_COMPAT (attrs), | |
9347 | CODING_ATTR_PLIST (attrs))); | |
c4825358 | 9348 | |
df7492f9 KH |
9349 | eol_type = args[coding_arg_eol_type]; |
9350 | if (! NILP (eol_type) | |
9351 | && ! EQ (eol_type, Qunix) | |
9352 | && ! EQ (eol_type, Qdos) | |
9353 | && ! EQ (eol_type, Qmac)) | |
9354 | error ("Invalid eol-type"); | |
4ed46869 | 9355 | |
df7492f9 | 9356 | aliases = Fcons (name, Qnil); |
4ed46869 | 9357 | |
df7492f9 KH |
9358 | if (NILP (eol_type)) |
9359 | { | |
9360 | eol_type = make_subsidiaries (name); | |
9361 | for (i = 0; i < 3; i++) | |
1397dc18 | 9362 | { |
df7492f9 KH |
9363 | Lisp_Object this_spec, this_name, this_aliases, this_eol_type; |
9364 | ||
9365 | this_name = AREF (eol_type, i); | |
9366 | this_aliases = Fcons (this_name, Qnil); | |
9367 | this_eol_type = (i == 0 ? Qunix : i == 1 ? Qdos : Qmac); | |
9368 | this_spec = Fmake_vector (make_number (3), attrs); | |
9369 | ASET (this_spec, 1, this_aliases); | |
9370 | ASET (this_spec, 2, this_eol_type); | |
9371 | Fputhash (this_name, this_spec, Vcoding_system_hash_table); | |
9372 | Vcoding_system_list = Fcons (this_name, Vcoding_system_list); | |
583f71ca KH |
9373 | val = Fassoc (Fsymbol_name (this_name), Vcoding_system_alist); |
9374 | if (NILP (val)) | |
9375 | Vcoding_system_alist | |
9376 | = Fcons (Fcons (Fsymbol_name (this_name), Qnil), | |
9377 | Vcoding_system_alist); | |
1397dc18 | 9378 | } |
d46c5b12 | 9379 | } |
4ed46869 | 9380 | |
df7492f9 KH |
9381 | spec_vec = Fmake_vector (make_number (3), attrs); |
9382 | ASET (spec_vec, 1, aliases); | |
9383 | ASET (spec_vec, 2, eol_type); | |
48b0f3ae | 9384 | |
df7492f9 KH |
9385 | Fputhash (name, spec_vec, Vcoding_system_hash_table); |
9386 | Vcoding_system_list = Fcons (name, Vcoding_system_list); | |
583f71ca KH |
9387 | val = Fassoc (Fsymbol_name (name), Vcoding_system_alist); |
9388 | if (NILP (val)) | |
9389 | Vcoding_system_alist = Fcons (Fcons (Fsymbol_name (name), Qnil), | |
9390 | Vcoding_system_alist); | |
48b0f3ae | 9391 | |
df7492f9 KH |
9392 | { |
9393 | int id = coding_categories[category].id; | |
48b0f3ae | 9394 | |
df7492f9 KH |
9395 | if (id < 0 || EQ (name, CODING_ID_NAME (id))) |
9396 | setup_coding_system (name, &coding_categories[category]); | |
9397 | } | |
48b0f3ae | 9398 | |
d46c5b12 | 9399 | return Qnil; |
48b0f3ae | 9400 | |
df7492f9 KH |
9401 | short_args: |
9402 | return Fsignal (Qwrong_number_of_arguments, | |
9403 | Fcons (intern ("define-coding-system-internal"), | |
9404 | make_number (nargs))); | |
d46c5b12 | 9405 | } |
4ed46869 | 9406 | |
d6925f38 | 9407 | |
a6f87d34 KH |
9408 | DEFUN ("coding-system-put", Fcoding_system_put, Scoding_system_put, |
9409 | 3, 3, 0, | |
9410 | doc: /* Change value in CODING-SYSTEM's property list PROP to VAL. */) | |
9411 | (coding_system, prop, val) | |
9412 | Lisp_Object coding_system, prop, val; | |
9413 | { | |
3dbe7859 | 9414 | Lisp_Object spec, attrs; |
a6f87d34 KH |
9415 | |
9416 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
9417 | attrs = AREF (spec, 0); | |
9418 | if (EQ (prop, QCmnemonic)) | |
9419 | { | |
9420 | if (! STRINGP (val)) | |
9421 | CHECK_CHARACTER (val); | |
9422 | CODING_ATTR_MNEMONIC (attrs) = val; | |
9423 | } | |
9424 | else if (EQ (prop, QCdefalut_char)) | |
9425 | { | |
9426 | if (NILP (val)) | |
9427 | val = make_number (' '); | |
9428 | else | |
9429 | CHECK_CHARACTER (val); | |
9430 | CODING_ATTR_DEFAULT_CHAR (attrs) = val; | |
9431 | } | |
9432 | else if (EQ (prop, QCdecode_translation_table)) | |
9433 | { | |
9434 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) | |
9435 | CHECK_SYMBOL (val); | |
9436 | CODING_ATTR_DECODE_TBL (attrs) = val; | |
9437 | } | |
9438 | else if (EQ (prop, QCencode_translation_table)) | |
9439 | { | |
9440 | if (! CHAR_TABLE_P (val) && ! CONSP (val)) | |
9441 | CHECK_SYMBOL (val); | |
9442 | CODING_ATTR_ENCODE_TBL (attrs) = val; | |
9443 | } | |
9444 | else if (EQ (prop, QCpost_read_conversion)) | |
9445 | { | |
9446 | CHECK_SYMBOL (val); | |
9447 | CODING_ATTR_POST_READ (attrs) = val; | |
9448 | } | |
9449 | else if (EQ (prop, QCpre_write_conversion)) | |
9450 | { | |
9451 | CHECK_SYMBOL (val); | |
9452 | CODING_ATTR_PRE_WRITE (attrs) = val; | |
9453 | } | |
35befdaa KH |
9454 | else if (EQ (prop, QCascii_compatible_p)) |
9455 | { | |
9456 | CODING_ATTR_ASCII_COMPAT (attrs) = val; | |
9457 | } | |
a6f87d34 KH |
9458 | |
9459 | CODING_ATTR_PLIST (attrs) | |
9460 | = Fplist_put (CODING_ATTR_PLIST (attrs), prop, val); | |
9461 | return val; | |
9462 | } | |
9463 | ||
9464 | ||
df7492f9 KH |
9465 | DEFUN ("define-coding-system-alias", Fdefine_coding_system_alias, |
9466 | Sdefine_coding_system_alias, 2, 2, 0, | |
9467 | doc: /* Define ALIAS as an alias for CODING-SYSTEM. */) | |
9468 | (alias, coding_system) | |
9469 | Lisp_Object alias, coding_system; | |
66cfb530 | 9470 | { |
583f71ca | 9471 | Lisp_Object spec, aliases, eol_type, val; |
4ed46869 | 9472 | |
df7492f9 KH |
9473 | CHECK_SYMBOL (alias); |
9474 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
9475 | aliases = AREF (spec, 1); | |
d6925f38 KH |
9476 | /* ALISES should be a list of length more than zero, and the first |
9477 | element is a base coding system. Append ALIAS at the tail of the | |
9478 | list. */ | |
df7492f9 KH |
9479 | while (!NILP (XCDR (aliases))) |
9480 | aliases = XCDR (aliases); | |
8f924df7 | 9481 | XSETCDR (aliases, Fcons (alias, Qnil)); |
4ed46869 | 9482 | |
df7492f9 KH |
9483 | eol_type = AREF (spec, 2); |
9484 | if (VECTORP (eol_type)) | |
4ed46869 | 9485 | { |
df7492f9 KH |
9486 | Lisp_Object subsidiaries; |
9487 | int i; | |
4ed46869 | 9488 | |
df7492f9 KH |
9489 | subsidiaries = make_subsidiaries (alias); |
9490 | for (i = 0; i < 3; i++) | |
9491 | Fdefine_coding_system_alias (AREF (subsidiaries, i), | |
9492 | AREF (eol_type, i)); | |
4ed46869 | 9493 | } |
df7492f9 KH |
9494 | |
9495 | Fputhash (alias, spec, Vcoding_system_hash_table); | |
d6925f38 | 9496 | Vcoding_system_list = Fcons (alias, Vcoding_system_list); |
583f71ca KH |
9497 | val = Fassoc (Fsymbol_name (alias), Vcoding_system_alist); |
9498 | if (NILP (val)) | |
9499 | Vcoding_system_alist = Fcons (Fcons (Fsymbol_name (alias), Qnil), | |
9500 | Vcoding_system_alist); | |
66cfb530 | 9501 | |
4ed46869 KH |
9502 | return Qnil; |
9503 | } | |
9504 | ||
df7492f9 KH |
9505 | DEFUN ("coding-system-base", Fcoding_system_base, Scoding_system_base, |
9506 | 1, 1, 0, | |
9507 | doc: /* Return the base of CODING-SYSTEM. | |
da7db224 | 9508 | Any alias or subsidiary coding system is not a base coding system. */) |
df7492f9 KH |
9509 | (coding_system) |
9510 | Lisp_Object coding_system; | |
d46c5b12 | 9511 | { |
df7492f9 | 9512 | Lisp_Object spec, attrs; |
d46c5b12 | 9513 | |
df7492f9 KH |
9514 | if (NILP (coding_system)) |
9515 | return (Qno_conversion); | |
9516 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
9517 | attrs = AREF (spec, 0); | |
9518 | return CODING_ATTR_BASE_NAME (attrs); | |
9519 | } | |
1397dc18 | 9520 | |
df7492f9 KH |
9521 | DEFUN ("coding-system-plist", Fcoding_system_plist, Scoding_system_plist, |
9522 | 1, 1, 0, | |
9523 | doc: "Return the property list of CODING-SYSTEM.") | |
9524 | (coding_system) | |
9525 | Lisp_Object coding_system; | |
9526 | { | |
9527 | Lisp_Object spec, attrs; | |
1397dc18 | 9528 | |
df7492f9 KH |
9529 | if (NILP (coding_system)) |
9530 | coding_system = Qno_conversion; | |
9531 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
9532 | attrs = AREF (spec, 0); | |
9533 | return CODING_ATTR_PLIST (attrs); | |
d46c5b12 KH |
9534 | } |
9535 | ||
df7492f9 KH |
9536 | |
9537 | DEFUN ("coding-system-aliases", Fcoding_system_aliases, Scoding_system_aliases, | |
9538 | 1, 1, 0, | |
da7db224 | 9539 | doc: /* Return the list of aliases of CODING-SYSTEM. */) |
df7492f9 KH |
9540 | (coding_system) |
9541 | Lisp_Object coding_system; | |
66cfb530 | 9542 | { |
df7492f9 | 9543 | Lisp_Object spec; |
84d60297 | 9544 | |
df7492f9 KH |
9545 | if (NILP (coding_system)) |
9546 | coding_system = Qno_conversion; | |
9547 | CHECK_CODING_SYSTEM_GET_SPEC (coding_system, spec); | |
da7db224 | 9548 | return AREF (spec, 1); |
df7492f9 | 9549 | } |
66cfb530 | 9550 | |
df7492f9 KH |
9551 | DEFUN ("coding-system-eol-type", Fcoding_system_eol_type, |
9552 | Scoding_system_eol_type, 1, 1, 0, | |
9553 | doc: /* Return eol-type of CODING-SYSTEM. | |
9554 | An eol-type is integer 0, 1, 2, or a vector of coding systems. | |
66cfb530 | 9555 | |
df7492f9 KH |
9556 | Integer values 0, 1, and 2 indicate a format of end-of-line; LF, CRLF, |
9557 | and CR respectively. | |
66cfb530 | 9558 | |
df7492f9 KH |
9559 | A vector value indicates that a format of end-of-line should be |
9560 | detected automatically. Nth element of the vector is the subsidiary | |
9561 | coding system whose eol-type is N. */) | |
6b89e3aa KH |
9562 | (coding_system) |
9563 | Lisp_Object coding_system; | |
9564 | { | |
df7492f9 KH |
9565 | Lisp_Object spec, eol_type; |
9566 | int n; | |
6b89e3aa | 9567 | |
df7492f9 KH |
9568 | if (NILP (coding_system)) |
9569 | coding_system = Qno_conversion; | |
9570 | if (! CODING_SYSTEM_P (coding_system)) | |
9571 | return Qnil; | |
9572 | spec = CODING_SYSTEM_SPEC (coding_system); | |
9573 | eol_type = AREF (spec, 2); | |
9574 | if (VECTORP (eol_type)) | |
9575 | return Fcopy_sequence (eol_type); | |
9576 | n = EQ (eol_type, Qunix) ? 0 : EQ (eol_type, Qdos) ? 1 : 2; | |
9577 | return make_number (n); | |
6b89e3aa KH |
9578 | } |
9579 | ||
4ed46869 KH |
9580 | #endif /* emacs */ |
9581 | ||
9582 | \f | |
1397dc18 | 9583 | /*** 9. Post-amble ***/ |
4ed46869 | 9584 | |
dfcf069d | 9585 | void |
4ed46869 KH |
9586 | init_coding_once () |
9587 | { | |
9588 | int i; | |
9589 | ||
df7492f9 KH |
9590 | for (i = 0; i < coding_category_max; i++) |
9591 | { | |
9592 | coding_categories[i].id = -1; | |
9593 | coding_priorities[i] = i; | |
9594 | } | |
4ed46869 KH |
9595 | |
9596 | /* ISO2022 specific initialize routine. */ | |
9597 | for (i = 0; i < 0x20; i++) | |
b73bfc1c | 9598 | iso_code_class[i] = ISO_control_0; |
4ed46869 KH |
9599 | for (i = 0x21; i < 0x7F; i++) |
9600 | iso_code_class[i] = ISO_graphic_plane_0; | |
9601 | for (i = 0x80; i < 0xA0; i++) | |
b73bfc1c | 9602 | iso_code_class[i] = ISO_control_1; |
4ed46869 KH |
9603 | for (i = 0xA1; i < 0xFF; i++) |
9604 | iso_code_class[i] = ISO_graphic_plane_1; | |
9605 | iso_code_class[0x20] = iso_code_class[0x7F] = ISO_0x20_or_0x7F; | |
9606 | iso_code_class[0xA0] = iso_code_class[0xFF] = ISO_0xA0_or_0xFF; | |
4ed46869 KH |
9607 | iso_code_class[ISO_CODE_SO] = ISO_shift_out; |
9608 | iso_code_class[ISO_CODE_SI] = ISO_shift_in; | |
9609 | iso_code_class[ISO_CODE_SS2_7] = ISO_single_shift_2_7; | |
9610 | iso_code_class[ISO_CODE_ESC] = ISO_escape; | |
9611 | iso_code_class[ISO_CODE_SS2] = ISO_single_shift_2; | |
9612 | iso_code_class[ISO_CODE_SS3] = ISO_single_shift_3; | |
9613 | iso_code_class[ISO_CODE_CSI] = ISO_control_sequence_introducer; | |
9614 | ||
df7492f9 KH |
9615 | for (i = 0; i < 256; i++) |
9616 | { | |
9617 | emacs_mule_bytes[i] = 1; | |
9618 | } | |
7c78e542 KH |
9619 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_11] = 3; |
9620 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_12] = 3; | |
9621 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_21] = 4; | |
9622 | emacs_mule_bytes[EMACS_MULE_LEADING_CODE_PRIVATE_22] = 4; | |
e0e989f6 KH |
9623 | } |
9624 | ||
9625 | #ifdef emacs | |
9626 | ||
dfcf069d | 9627 | void |
e0e989f6 KH |
9628 | syms_of_coding () |
9629 | { | |
df7492f9 | 9630 | staticpro (&Vcoding_system_hash_table); |
8f924df7 KH |
9631 | { |
9632 | Lisp_Object args[2]; | |
9633 | args[0] = QCtest; | |
9634 | args[1] = Qeq; | |
9635 | Vcoding_system_hash_table = Fmake_hash_table (2, args); | |
9636 | } | |
df7492f9 KH |
9637 | |
9638 | staticpro (&Vsjis_coding_system); | |
9639 | Vsjis_coding_system = Qnil; | |
e0e989f6 | 9640 | |
df7492f9 KH |
9641 | staticpro (&Vbig5_coding_system); |
9642 | Vbig5_coding_system = Qnil; | |
9643 | ||
24a73b0a KH |
9644 | staticpro (&Vcode_conversion_reused_workbuf); |
9645 | Vcode_conversion_reused_workbuf = Qnil; | |
9646 | ||
9647 | staticpro (&Vcode_conversion_workbuf_name); | |
9648 | Vcode_conversion_workbuf_name = build_string (" *code-conversion-work*"); | |
e0e989f6 | 9649 | |
24a73b0a | 9650 | reused_workbuf_in_use = 0; |
df7492f9 KH |
9651 | |
9652 | DEFSYM (Qcharset, "charset"); | |
9653 | DEFSYM (Qtarget_idx, "target-idx"); | |
9654 | DEFSYM (Qcoding_system_history, "coding-system-history"); | |
bb0115a2 RS |
9655 | Fset (Qcoding_system_history, Qnil); |
9656 | ||
9ce27fde | 9657 | /* Target FILENAME is the first argument. */ |
e0e989f6 | 9658 | Fput (Qinsert_file_contents, Qtarget_idx, make_number (0)); |
9ce27fde | 9659 | /* Target FILENAME is the third argument. */ |
e0e989f6 KH |
9660 | Fput (Qwrite_region, Qtarget_idx, make_number (2)); |
9661 | ||
df7492f9 | 9662 | DEFSYM (Qcall_process, "call-process"); |
9ce27fde | 9663 | /* Target PROGRAM is the first argument. */ |
e0e989f6 KH |
9664 | Fput (Qcall_process, Qtarget_idx, make_number (0)); |
9665 | ||
df7492f9 | 9666 | DEFSYM (Qcall_process_region, "call-process-region"); |
9ce27fde | 9667 | /* Target PROGRAM is the third argument. */ |
e0e989f6 KH |
9668 | Fput (Qcall_process_region, Qtarget_idx, make_number (2)); |
9669 | ||
df7492f9 | 9670 | DEFSYM (Qstart_process, "start-process"); |
9ce27fde | 9671 | /* Target PROGRAM is the third argument. */ |
e0e989f6 KH |
9672 | Fput (Qstart_process, Qtarget_idx, make_number (2)); |
9673 | ||
df7492f9 | 9674 | DEFSYM (Qopen_network_stream, "open-network-stream"); |
9ce27fde | 9675 | /* Target SERVICE is the fourth argument. */ |
e0e989f6 KH |
9676 | Fput (Qopen_network_stream, Qtarget_idx, make_number (3)); |
9677 | ||
df7492f9 KH |
9678 | DEFSYM (Qcoding_system, "coding-system"); |
9679 | DEFSYM (Qcoding_aliases, "coding-aliases"); | |
4ed46869 | 9680 | |
df7492f9 KH |
9681 | DEFSYM (Qeol_type, "eol-type"); |
9682 | DEFSYM (Qunix, "unix"); | |
9683 | DEFSYM (Qdos, "dos"); | |
4ed46869 | 9684 | |
df7492f9 KH |
9685 | DEFSYM (Qbuffer_file_coding_system, "buffer-file-coding-system"); |
9686 | DEFSYM (Qpost_read_conversion, "post-read-conversion"); | |
9687 | DEFSYM (Qpre_write_conversion, "pre-write-conversion"); | |
9688 | DEFSYM (Qdefault_char, "default-char"); | |
9689 | DEFSYM (Qundecided, "undecided"); | |
9690 | DEFSYM (Qno_conversion, "no-conversion"); | |
9691 | DEFSYM (Qraw_text, "raw-text"); | |
4ed46869 | 9692 | |
df7492f9 | 9693 | DEFSYM (Qiso_2022, "iso-2022"); |
4ed46869 | 9694 | |
df7492f9 | 9695 | DEFSYM (Qutf_8, "utf-8"); |
8f924df7 | 9696 | DEFSYM (Qutf_8_emacs, "utf-8-emacs"); |
27901516 | 9697 | |
df7492f9 | 9698 | DEFSYM (Qutf_16, "utf-16"); |
df7492f9 KH |
9699 | DEFSYM (Qbig, "big"); |
9700 | DEFSYM (Qlittle, "little"); | |
27901516 | 9701 | |
df7492f9 KH |
9702 | DEFSYM (Qshift_jis, "shift-jis"); |
9703 | DEFSYM (Qbig5, "big5"); | |
4ed46869 | 9704 | |
df7492f9 | 9705 | DEFSYM (Qcoding_system_p, "coding-system-p"); |
4ed46869 | 9706 | |
df7492f9 | 9707 | DEFSYM (Qcoding_system_error, "coding-system-error"); |
4ed46869 KH |
9708 | Fput (Qcoding_system_error, Qerror_conditions, |
9709 | Fcons (Qcoding_system_error, Fcons (Qerror, Qnil))); | |
9710 | Fput (Qcoding_system_error, Qerror_message, | |
9ce27fde | 9711 | build_string ("Invalid coding system")); |
4ed46869 | 9712 | |
05e6f5dc KH |
9713 | /* Intern this now in case it isn't already done. |
9714 | Setting this variable twice is harmless. | |
9715 | But don't staticpro it here--that is done in alloc.c. */ | |
9716 | Qchar_table_extra_slots = intern ("char-table-extra-slots"); | |
70c22245 | 9717 | |
df7492f9 | 9718 | DEFSYM (Qtranslation_table, "translation-table"); |
433f7f87 | 9719 | Fput (Qtranslation_table, Qchar_table_extra_slots, make_number (2)); |
df7492f9 KH |
9720 | DEFSYM (Qtranslation_table_id, "translation-table-id"); |
9721 | DEFSYM (Qtranslation_table_for_decode, "translation-table-for-decode"); | |
9722 | DEFSYM (Qtranslation_table_for_encode, "translation-table-for-encode"); | |
1397dc18 | 9723 | |
df7492f9 | 9724 | DEFSYM (Qvalid_codes, "valid-codes"); |
9ce27fde | 9725 | |
df7492f9 | 9726 | DEFSYM (Qemacs_mule, "emacs-mule"); |
d46c5b12 | 9727 | |
01378f49 | 9728 | DEFSYM (QCcategory, ":category"); |
a6f87d34 KH |
9729 | DEFSYM (QCmnemonic, ":mnemonic"); |
9730 | DEFSYM (QCdefalut_char, ":default-char"); | |
9731 | DEFSYM (QCdecode_translation_table, ":decode-translation-table"); | |
9732 | DEFSYM (QCencode_translation_table, ":encode-translation-table"); | |
9733 | DEFSYM (QCpost_read_conversion, ":post-read-conversion"); | |
9734 | DEFSYM (QCpre_write_conversion, ":pre-write-conversion"); | |
35befdaa | 9735 | DEFSYM (QCascii_compatible_p, ":ascii-compatible-p"); |
01378f49 | 9736 | |
df7492f9 KH |
9737 | Vcoding_category_table |
9738 | = Fmake_vector (make_number (coding_category_max), Qnil); | |
9739 | staticpro (&Vcoding_category_table); | |
9740 | /* Followings are target of code detection. */ | |
9741 | ASET (Vcoding_category_table, coding_category_iso_7, | |
9742 | intern ("coding-category-iso-7")); | |
9743 | ASET (Vcoding_category_table, coding_category_iso_7_tight, | |
9744 | intern ("coding-category-iso-7-tight")); | |
9745 | ASET (Vcoding_category_table, coding_category_iso_8_1, | |
9746 | intern ("coding-category-iso-8-1")); | |
9747 | ASET (Vcoding_category_table, coding_category_iso_8_2, | |
9748 | intern ("coding-category-iso-8-2")); | |
9749 | ASET (Vcoding_category_table, coding_category_iso_7_else, | |
9750 | intern ("coding-category-iso-7-else")); | |
9751 | ASET (Vcoding_category_table, coding_category_iso_8_else, | |
9752 | intern ("coding-category-iso-8-else")); | |
9753 | ASET (Vcoding_category_table, coding_category_utf_8, | |
9754 | intern ("coding-category-utf-8")); | |
9755 | ASET (Vcoding_category_table, coding_category_utf_16_be, | |
9756 | intern ("coding-category-utf-16-be")); | |
ff563fce KH |
9757 | ASET (Vcoding_category_table, coding_category_utf_16_auto, |
9758 | intern ("coding-category-utf-16-auto")); | |
df7492f9 KH |
9759 | ASET (Vcoding_category_table, coding_category_utf_16_le, |
9760 | intern ("coding-category-utf-16-le")); | |
9761 | ASET (Vcoding_category_table, coding_category_utf_16_be_nosig, | |
9762 | intern ("coding-category-utf-16-be-nosig")); | |
9763 | ASET (Vcoding_category_table, coding_category_utf_16_le_nosig, | |
9764 | intern ("coding-category-utf-16-le-nosig")); | |
9765 | ASET (Vcoding_category_table, coding_category_charset, | |
9766 | intern ("coding-category-charset")); | |
9767 | ASET (Vcoding_category_table, coding_category_sjis, | |
9768 | intern ("coding-category-sjis")); | |
9769 | ASET (Vcoding_category_table, coding_category_big5, | |
9770 | intern ("coding-category-big5")); | |
9771 | ASET (Vcoding_category_table, coding_category_ccl, | |
9772 | intern ("coding-category-ccl")); | |
9773 | ASET (Vcoding_category_table, coding_category_emacs_mule, | |
9774 | intern ("coding-category-emacs-mule")); | |
9775 | /* Followings are NOT target of code detection. */ | |
9776 | ASET (Vcoding_category_table, coding_category_raw_text, | |
9777 | intern ("coding-category-raw-text")); | |
9778 | ASET (Vcoding_category_table, coding_category_undecided, | |
9779 | intern ("coding-category-undecided")); | |
ecf488bc | 9780 | |
065e3595 KH |
9781 | DEFSYM (Qinsufficient_source, "insufficient-source"); |
9782 | DEFSYM (Qinconsistent_eol, "inconsistent-eol"); | |
9783 | DEFSYM (Qinvalid_source, "invalid-source"); | |
9784 | DEFSYM (Qinterrupted, "interrupted"); | |
9785 | DEFSYM (Qinsufficient_memory, "insufficient-memory"); | |
44e8490d | 9786 | DEFSYM (Qcoding_system_define_form, "coding-system-define-form"); |
065e3595 | 9787 | |
4ed46869 KH |
9788 | defsubr (&Scoding_system_p); |
9789 | defsubr (&Sread_coding_system); | |
9790 | defsubr (&Sread_non_nil_coding_system); | |
9791 | defsubr (&Scheck_coding_system); | |
9792 | defsubr (&Sdetect_coding_region); | |
d46c5b12 | 9793 | defsubr (&Sdetect_coding_string); |
05e6f5dc | 9794 | defsubr (&Sfind_coding_systems_region_internal); |
068a9dbd | 9795 | defsubr (&Sunencodable_char_position); |
df7492f9 | 9796 | defsubr (&Scheck_coding_systems_region); |
4ed46869 KH |
9797 | defsubr (&Sdecode_coding_region); |
9798 | defsubr (&Sencode_coding_region); | |
9799 | defsubr (&Sdecode_coding_string); | |
9800 | defsubr (&Sencode_coding_string); | |
9801 | defsubr (&Sdecode_sjis_char); | |
9802 | defsubr (&Sencode_sjis_char); | |
9803 | defsubr (&Sdecode_big5_char); | |
9804 | defsubr (&Sencode_big5_char); | |
1ba9e4ab | 9805 | defsubr (&Sset_terminal_coding_system_internal); |
c4825358 | 9806 | defsubr (&Sset_safe_terminal_coding_system_internal); |
4ed46869 | 9807 | defsubr (&Sterminal_coding_system); |
1ba9e4ab | 9808 | defsubr (&Sset_keyboard_coding_system_internal); |
4ed46869 | 9809 | defsubr (&Skeyboard_coding_system); |
a5d301df | 9810 | defsubr (&Sfind_operation_coding_system); |
df7492f9 | 9811 | defsubr (&Sset_coding_system_priority); |
6b89e3aa | 9812 | defsubr (&Sdefine_coding_system_internal); |
df7492f9 | 9813 | defsubr (&Sdefine_coding_system_alias); |
a6f87d34 | 9814 | defsubr (&Scoding_system_put); |
df7492f9 KH |
9815 | defsubr (&Scoding_system_base); |
9816 | defsubr (&Scoding_system_plist); | |
9817 | defsubr (&Scoding_system_aliases); | |
9818 | defsubr (&Scoding_system_eol_type); | |
9819 | defsubr (&Scoding_system_priority_list); | |
4ed46869 | 9820 | |
4608c386 | 9821 | DEFVAR_LISP ("coding-system-list", &Vcoding_system_list, |
48b0f3ae PJ |
9822 | doc: /* List of coding systems. |
9823 | ||
9824 | Do not alter the value of this variable manually. This variable should be | |
df7492f9 | 9825 | updated by the functions `define-coding-system' and |
48b0f3ae | 9826 | `define-coding-system-alias'. */); |
4608c386 KH |
9827 | Vcoding_system_list = Qnil; |
9828 | ||
9829 | DEFVAR_LISP ("coding-system-alist", &Vcoding_system_alist, | |
48b0f3ae PJ |
9830 | doc: /* Alist of coding system names. |
9831 | Each element is one element list of coding system name. | |
9832 | This variable is given to `completing-read' as TABLE argument. | |
9833 | ||
9834 | Do not alter the value of this variable manually. This variable should be | |
9835 | updated by the functions `make-coding-system' and | |
9836 | `define-coding-system-alias'. */); | |
4608c386 KH |
9837 | Vcoding_system_alist = Qnil; |
9838 | ||
4ed46869 | 9839 | DEFVAR_LISP ("coding-category-list", &Vcoding_category_list, |
48b0f3ae PJ |
9840 | doc: /* List of coding-categories (symbols) ordered by priority. |
9841 | ||
9842 | On detecting a coding system, Emacs tries code detection algorithms | |
9843 | associated with each coding-category one by one in this order. When | |
9844 | one algorithm agrees with a byte sequence of source text, the coding | |
0ec31faf KH |
9845 | system bound to the corresponding coding-category is selected. |
9846 | ||
42205607 | 9847 | Don't modify this variable directly, but use `set-coding-priority'. */); |
4ed46869 KH |
9848 | { |
9849 | int i; | |
9850 | ||
9851 | Vcoding_category_list = Qnil; | |
df7492f9 | 9852 | for (i = coding_category_max - 1; i >= 0; i--) |
4ed46869 | 9853 | Vcoding_category_list |
d46c5b12 KH |
9854 | = Fcons (XVECTOR (Vcoding_category_table)->contents[i], |
9855 | Vcoding_category_list); | |
4ed46869 KH |
9856 | } |
9857 | ||
9858 | DEFVAR_LISP ("coding-system-for-read", &Vcoding_system_for_read, | |
48b0f3ae PJ |
9859 | doc: /* Specify the coding system for read operations. |
9860 | It is useful to bind this variable with `let', but do not set it globally. | |
9861 | If the value is a coding system, it is used for decoding on read operation. | |
9862 | If not, an appropriate element is used from one of the coding system alists: | |
9863 | There are three such tables, `file-coding-system-alist', | |
9864 | `process-coding-system-alist', and `network-coding-system-alist'. */); | |
4ed46869 KH |
9865 | Vcoding_system_for_read = Qnil; |
9866 | ||
9867 | DEFVAR_LISP ("coding-system-for-write", &Vcoding_system_for_write, | |
48b0f3ae PJ |
9868 | doc: /* Specify the coding system for write operations. |
9869 | Programs bind this variable with `let', but you should not set it globally. | |
9870 | If the value is a coding system, it is used for encoding of output, | |
9871 | when writing it to a file and when sending it to a file or subprocess. | |
9872 | ||
9873 | If this does not specify a coding system, an appropriate element | |
9874 | is used from one of the coding system alists: | |
9875 | There are three such tables, `file-coding-system-alist', | |
9876 | `process-coding-system-alist', and `network-coding-system-alist'. | |
9877 | For output to files, if the above procedure does not specify a coding system, | |
9878 | the value of `buffer-file-coding-system' is used. */); | |
4ed46869 KH |
9879 | Vcoding_system_for_write = Qnil; |
9880 | ||
9881 | DEFVAR_LISP ("last-coding-system-used", &Vlast_coding_system_used, | |
df7492f9 KH |
9882 | doc: /* |
9883 | Coding system used in the latest file or process I/O. */); | |
4ed46869 KH |
9884 | Vlast_coding_system_used = Qnil; |
9885 | ||
065e3595 KH |
9886 | DEFVAR_LISP ("last-code-conversion-error", &Vlast_code_conversion_error, |
9887 | doc: /* | |
9888 | Error status of the last code conversion. | |
9889 | ||
9890 | When an error was detected in the last code conversion, this variable | |
9891 | is set to one of the following symbols. | |
9892 | `insufficient-source' | |
9893 | `inconsistent-eol' | |
9894 | `invalid-source' | |
9895 | `interrupted' | |
9896 | `insufficient-memory' | |
9897 | When no error was detected, the value doesn't change. So, to check | |
9898 | the error status of a code conversion by this variable, you must | |
9899 | explicitly set this variable to nil before performing code | |
9900 | conversion. */); | |
9901 | Vlast_code_conversion_error = Qnil; | |
9902 | ||
9ce27fde | 9903 | DEFVAR_BOOL ("inhibit-eol-conversion", &inhibit_eol_conversion, |
df7492f9 KH |
9904 | doc: /* |
9905 | *Non-nil means always inhibit code conversion of end-of-line format. | |
48b0f3ae PJ |
9906 | See info node `Coding Systems' and info node `Text and Binary' concerning |
9907 | such conversion. */); | |
9ce27fde KH |
9908 | inhibit_eol_conversion = 0; |
9909 | ||
ed29121d | 9910 | DEFVAR_BOOL ("inherit-process-coding-system", &inherit_process_coding_system, |
df7492f9 KH |
9911 | doc: /* |
9912 | Non-nil means process buffer inherits coding system of process output. | |
48b0f3ae PJ |
9913 | Bind it to t if the process output is to be treated as if it were a file |
9914 | read from some filesystem. */); | |
ed29121d EZ |
9915 | inherit_process_coding_system = 0; |
9916 | ||
02ba4723 | 9917 | DEFVAR_LISP ("file-coding-system-alist", &Vfile_coding_system_alist, |
df7492f9 KH |
9918 | doc: /* |
9919 | Alist to decide a coding system to use for a file I/O operation. | |
48b0f3ae PJ |
9920 | The format is ((PATTERN . VAL) ...), |
9921 | where PATTERN is a regular expression matching a file name, | |
9922 | VAL is a coding system, a cons of coding systems, or a function symbol. | |
9923 | If VAL is a coding system, it is used for both decoding and encoding | |
9924 | the file contents. | |
9925 | If VAL is a cons of coding systems, the car part is used for decoding, | |
9926 | and the cdr part is used for encoding. | |
9927 | If VAL is a function symbol, the function must return a coding system | |
2c53e699 KH |
9928 | or a cons of coding systems which are used as above. The function is |
9929 | called with an argument that is a list of the arguments with which | |
5a0bbd9a KH |
9930 | `find-operation-coding-system' was called. If the function can't decide |
9931 | a coding system, it can return `undecided' so that the normal | |
9932 | code-detection is performed. | |
48b0f3ae PJ |
9933 | |
9934 | See also the function `find-operation-coding-system' | |
9935 | and the variable `auto-coding-alist'. */); | |
02ba4723 KH |
9936 | Vfile_coding_system_alist = Qnil; |
9937 | ||
9938 | DEFVAR_LISP ("process-coding-system-alist", &Vprocess_coding_system_alist, | |
df7492f9 KH |
9939 | doc: /* |
9940 | Alist to decide a coding system to use for a process I/O operation. | |
48b0f3ae PJ |
9941 | The format is ((PATTERN . VAL) ...), |
9942 | where PATTERN is a regular expression matching a program name, | |
9943 | VAL is a coding system, a cons of coding systems, or a function symbol. | |
9944 | If VAL is a coding system, it is used for both decoding what received | |
9945 | from the program and encoding what sent to the program. | |
9946 | If VAL is a cons of coding systems, the car part is used for decoding, | |
9947 | and the cdr part is used for encoding. | |
9948 | If VAL is a function symbol, the function must return a coding system | |
9949 | or a cons of coding systems which are used as above. | |
9950 | ||
9951 | See also the function `find-operation-coding-system'. */); | |
02ba4723 KH |
9952 | Vprocess_coding_system_alist = Qnil; |
9953 | ||
9954 | DEFVAR_LISP ("network-coding-system-alist", &Vnetwork_coding_system_alist, | |
df7492f9 KH |
9955 | doc: /* |
9956 | Alist to decide a coding system to use for a network I/O operation. | |
48b0f3ae PJ |
9957 | The format is ((PATTERN . VAL) ...), |
9958 | where PATTERN is a regular expression matching a network service name | |
9959 | or is a port number to connect to, | |
9960 | VAL is a coding system, a cons of coding systems, or a function symbol. | |
9961 | If VAL is a coding system, it is used for both decoding what received | |
9962 | from the network stream and encoding what sent to the network stream. | |
9963 | If VAL is a cons of coding systems, the car part is used for decoding, | |
9964 | and the cdr part is used for encoding. | |
9965 | If VAL is a function symbol, the function must return a coding system | |
9966 | or a cons of coding systems which are used as above. | |
9967 | ||
9968 | See also the function `find-operation-coding-system'. */); | |
02ba4723 | 9969 | Vnetwork_coding_system_alist = Qnil; |
4ed46869 | 9970 | |
68c45bf0 | 9971 | DEFVAR_LISP ("locale-coding-system", &Vlocale_coding_system, |
75205970 RS |
9972 | doc: /* Coding system to use with system messages. |
9973 | Also used for decoding keyboard input on X Window system. */); | |
68c45bf0 PE |
9974 | Vlocale_coding_system = Qnil; |
9975 | ||
005f0d35 | 9976 | /* The eol mnemonics are reset in startup.el system-dependently. */ |
7722baf9 | 9977 | DEFVAR_LISP ("eol-mnemonic-unix", &eol_mnemonic_unix, |
df7492f9 KH |
9978 | doc: /* |
9979 | *String displayed in mode line for UNIX-like (LF) end-of-line format. */); | |
7722baf9 | 9980 | eol_mnemonic_unix = build_string (":"); |
4ed46869 | 9981 | |
7722baf9 | 9982 | DEFVAR_LISP ("eol-mnemonic-dos", &eol_mnemonic_dos, |
df7492f9 KH |
9983 | doc: /* |
9984 | *String displayed in mode line for DOS-like (CRLF) end-of-line format. */); | |
7722baf9 | 9985 | eol_mnemonic_dos = build_string ("\\"); |
4ed46869 | 9986 | |
7722baf9 | 9987 | DEFVAR_LISP ("eol-mnemonic-mac", &eol_mnemonic_mac, |
df7492f9 KH |
9988 | doc: /* |
9989 | *String displayed in mode line for MAC-like (CR) end-of-line format. */); | |
7722baf9 | 9990 | eol_mnemonic_mac = build_string ("/"); |
4ed46869 | 9991 | |
7722baf9 | 9992 | DEFVAR_LISP ("eol-mnemonic-undecided", &eol_mnemonic_undecided, |
df7492f9 KH |
9993 | doc: /* |
9994 | *String displayed in mode line when end-of-line format is not yet determined. */); | |
7722baf9 | 9995 | eol_mnemonic_undecided = build_string (":"); |
4ed46869 | 9996 | |
84fbb8a0 | 9997 | DEFVAR_LISP ("enable-character-translation", &Venable_character_translation, |
df7492f9 KH |
9998 | doc: /* |
9999 | *Non-nil enables character translation while encoding and decoding. */); | |
84fbb8a0 | 10000 | Venable_character_translation = Qt; |
bdd9fb48 | 10001 | |
f967223b | 10002 | DEFVAR_LISP ("standard-translation-table-for-decode", |
48b0f3ae PJ |
10003 | &Vstandard_translation_table_for_decode, |
10004 | doc: /* Table for translating characters while decoding. */); | |
f967223b | 10005 | Vstandard_translation_table_for_decode = Qnil; |
bdd9fb48 | 10006 | |
f967223b | 10007 | DEFVAR_LISP ("standard-translation-table-for-encode", |
48b0f3ae PJ |
10008 | &Vstandard_translation_table_for_encode, |
10009 | doc: /* Table for translating characters while encoding. */); | |
f967223b | 10010 | Vstandard_translation_table_for_encode = Qnil; |
4ed46869 | 10011 | |
df7492f9 | 10012 | DEFVAR_LISP ("charset-revision-table", &Vcharset_revision_table, |
48b0f3ae PJ |
10013 | doc: /* Alist of charsets vs revision numbers. |
10014 | While encoding, if a charset (car part of an element) is found, | |
df7492f9 KH |
10015 | designate it with the escape sequence identifying revision (cdr part |
10016 | of the element). */); | |
10017 | Vcharset_revision_table = Qnil; | |
02ba4723 KH |
10018 | |
10019 | DEFVAR_LISP ("default-process-coding-system", | |
10020 | &Vdefault_process_coding_system, | |
48b0f3ae PJ |
10021 | doc: /* Cons of coding systems used for process I/O by default. |
10022 | The car part is used for decoding a process output, | |
10023 | the cdr part is used for encoding a text to be sent to a process. */); | |
02ba4723 | 10024 | Vdefault_process_coding_system = Qnil; |
c4825358 | 10025 | |
3f003981 | 10026 | DEFVAR_LISP ("latin-extra-code-table", &Vlatin_extra_code_table, |
df7492f9 KH |
10027 | doc: /* |
10028 | Table of extra Latin codes in the range 128..159 (inclusive). | |
48b0f3ae PJ |
10029 | This is a vector of length 256. |
10030 | If Nth element is non-nil, the existence of code N in a file | |
10031 | \(or output of subprocess) doesn't prevent it to be detected as | |
10032 | a coding system of ISO 2022 variant which has a flag | |
10033 | `accept-latin-extra-code' t (e.g. iso-latin-1) on reading a file | |
10034 | or reading output of a subprocess. | |
10035 | Only 128th through 159th elements has a meaning. */); | |
3f003981 | 10036 | Vlatin_extra_code_table = Fmake_vector (make_number (256), Qnil); |
d46c5b12 KH |
10037 | |
10038 | DEFVAR_LISP ("select-safe-coding-system-function", | |
10039 | &Vselect_safe_coding_system_function, | |
df7492f9 KH |
10040 | doc: /* |
10041 | Function to call to select safe coding system for encoding a text. | |
48b0f3ae PJ |
10042 | |
10043 | If set, this function is called to force a user to select a proper | |
10044 | coding system which can encode the text in the case that a default | |
fdecf907 GM |
10045 | coding system used in each operation can't encode the text. The |
10046 | function should take care that the buffer is not modified while | |
10047 | the coding system is being selected. | |
48b0f3ae PJ |
10048 | |
10049 | The default value is `select-safe-coding-system' (which see). */); | |
d46c5b12 KH |
10050 | Vselect_safe_coding_system_function = Qnil; |
10051 | ||
5d5bf4d8 KH |
10052 | DEFVAR_BOOL ("coding-system-require-warning", |
10053 | &coding_system_require_warning, | |
10054 | doc: /* Internal use only. | |
6b89e3aa KH |
10055 | If non-nil, on writing a file, `select-safe-coding-system-function' is |
10056 | called even if `coding-system-for-write' is non-nil. The command | |
10057 | `universal-coding-system-argument' binds this variable to t temporarily. */); | |
5d5bf4d8 KH |
10058 | coding_system_require_warning = 0; |
10059 | ||
10060 | ||
22ab2303 | 10061 | DEFVAR_BOOL ("inhibit-iso-escape-detection", |
74383408 | 10062 | &inhibit_iso_escape_detection, |
df7492f9 KH |
10063 | doc: /* |
10064 | If non-nil, Emacs ignores ISO2022's escape sequence on code detection. | |
48b0f3ae PJ |
10065 | |
10066 | By default, on reading a file, Emacs tries to detect how the text is | |
10067 | encoded. This code detection is sensitive to escape sequences. If | |
10068 | the sequence is valid as ISO2022, the code is determined as one of | |
10069 | the ISO2022 encodings, and the file is decoded by the corresponding | |
10070 | coding system (e.g. `iso-2022-7bit'). | |
10071 | ||
10072 | However, there may be a case that you want to read escape sequences in | |
10073 | a file as is. In such a case, you can set this variable to non-nil. | |
10074 | Then, as the code detection ignores any escape sequences, no file is | |
10075 | detected as encoded in some ISO2022 encoding. The result is that all | |
10076 | escape sequences become visible in a buffer. | |
10077 | ||
10078 | The default value is nil, and it is strongly recommended not to change | |
10079 | it. That is because many Emacs Lisp source files that contain | |
10080 | non-ASCII characters are encoded by the coding system `iso-2022-7bit' | |
10081 | in Emacs's distribution, and they won't be decoded correctly on | |
10082 | reading if you suppress escape sequence detection. | |
10083 | ||
10084 | The other way to read escape sequences in a file without decoding is | |
10085 | to explicitly specify some coding system that doesn't use ISO2022's | |
10086 | escape sequence (e.g `latin-1') on reading by \\[universal-coding-system-argument]. */); | |
74383408 | 10087 | inhibit_iso_escape_detection = 0; |
002fdb44 DL |
10088 | |
10089 | DEFVAR_LISP ("translation-table-for-input", &Vtranslation_table_for_input, | |
15c8f9d1 DL |
10090 | doc: /* Char table for translating self-inserting characters. |
10091 | This is applied to the result of input methods, not their input. See also | |
10092 | `keyboard-translate-table'. */); | |
002fdb44 | 10093 | Vtranslation_table_for_input = Qnil; |
8f924df7 | 10094 | |
2c78b7e1 KH |
10095 | { |
10096 | Lisp_Object args[coding_arg_max]; | |
8f924df7 | 10097 | Lisp_Object plist[16]; |
2c78b7e1 KH |
10098 | int i; |
10099 | ||
10100 | for (i = 0; i < coding_arg_max; i++) | |
10101 | args[i] = Qnil; | |
10102 | ||
10103 | plist[0] = intern (":name"); | |
10104 | plist[1] = args[coding_arg_name] = Qno_conversion; | |
10105 | plist[2] = intern (":mnemonic"); | |
10106 | plist[3] = args[coding_arg_mnemonic] = make_number ('='); | |
10107 | plist[4] = intern (":coding-type"); | |
10108 | plist[5] = args[coding_arg_coding_type] = Qraw_text; | |
10109 | plist[6] = intern (":ascii-compatible-p"); | |
10110 | plist[7] = args[coding_arg_ascii_compatible_p] = Qt; | |
10111 | plist[8] = intern (":default-char"); | |
10112 | plist[9] = args[coding_arg_default_char] = make_number (0); | |
8f924df7 KH |
10113 | plist[10] = intern (":for-unibyte"); |
10114 | plist[11] = args[coding_arg_for_unibyte] = Qt; | |
10115 | plist[12] = intern (":docstring"); | |
10116 | plist[13] = build_string ("Do no conversion.\n\ | |
2c78b7e1 KH |
10117 | \n\ |
10118 | When you visit a file with this coding, the file is read into a\n\ | |
10119 | unibyte buffer as is, thus each byte of a file is treated as a\n\ | |
10120 | character."); | |
8f924df7 KH |
10121 | plist[14] = intern (":eol-type"); |
10122 | plist[15] = args[coding_arg_eol_type] = Qunix; | |
10123 | args[coding_arg_plist] = Flist (16, plist); | |
2c78b7e1 | 10124 | Fdefine_coding_system_internal (coding_arg_max, args); |
ae6f73fa KH |
10125 | |
10126 | plist[1] = args[coding_arg_name] = Qundecided; | |
10127 | plist[3] = args[coding_arg_mnemonic] = make_number ('-'); | |
10128 | plist[5] = args[coding_arg_coding_type] = Qundecided; | |
10129 | /* This is already set. | |
35befdaa | 10130 | plist[7] = args[coding_arg_ascii_compatible_p] = Qt; */ |
ae6f73fa KH |
10131 | plist[8] = intern (":charset-list"); |
10132 | plist[9] = args[coding_arg_charset_list] = Fcons (Qascii, Qnil); | |
10133 | plist[11] = args[coding_arg_for_unibyte] = Qnil; | |
10134 | plist[13] = build_string ("No conversion on encoding, automatic conversion on decoding."); | |
10135 | plist[15] = args[coding_arg_eol_type] = Qnil; | |
10136 | args[coding_arg_plist] = Flist (16, plist); | |
10137 | Fdefine_coding_system_internal (coding_arg_max, args); | |
2c78b7e1 KH |
10138 | } |
10139 | ||
2c78b7e1 | 10140 | setup_coding_system (Qno_conversion, &safe_terminal_coding); |
ff563fce KH |
10141 | |
10142 | { | |
10143 | int i; | |
10144 | ||
10145 | for (i = 0; i < coding_category_max; i++) | |
10146 | Fset (AREF (Vcoding_category_table, i), Qno_conversion); | |
10147 | } | |
fcbcfb64 KH |
10148 | #if defined (MSDOS) || defined (WINDOWSNT) |
10149 | system_eol_type = Qdos; | |
10150 | #else | |
10151 | system_eol_type = Qunix; | |
10152 | #endif | |
10153 | staticpro (&system_eol_type); | |
4ed46869 KH |
10154 | } |
10155 | ||
68c45bf0 PE |
10156 | char * |
10157 | emacs_strerror (error_number) | |
10158 | int error_number; | |
10159 | { | |
10160 | char *str; | |
10161 | ||
ca9c0567 | 10162 | synchronize_system_messages_locale (); |
68c45bf0 PE |
10163 | str = strerror (error_number); |
10164 | ||
10165 | if (! NILP (Vlocale_coding_system)) | |
10166 | { | |
10167 | Lisp_Object dec = code_convert_string_norecord (build_string (str), | |
10168 | Vlocale_coding_system, | |
10169 | 0); | |
d5db4077 | 10170 | str = (char *) SDATA (dec); |
68c45bf0 PE |
10171 | } |
10172 | ||
10173 | return str; | |
10174 | } | |
10175 | ||
4ed46869 | 10176 | #endif /* emacs */ |
9ffd559c KH |
10177 | |
10178 | /* arch-tag: 3a3a2b01-5ff6-4071-9afe-f5b808d9229d | |
10179 | (do not change this comment) */ |