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annotate src/file-coding.c @ 5166:b50624d3ae55
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| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Fri, 26 Mar 2010 15:06:28 +0000 |
| parents | f965e31a35f0 |
| children | 6c6d78781d59 |
| rev | line source |
|---|---|
| 771 | 1 /* Text encoding conversion functions; coding-system object. |
| 2 #### rename me to coding-system.c or coding.c | |
| 428 | 3 Copyright (C) 1991, 1995 Free Software Foundation, Inc. |
| 4 Copyright (C) 1995 Sun Microsystems, Inc. | |
|
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5 Copyright (C) 2000, 2001, 2002, 2003, 2005, 2010 Ben Wing. |
| 428 | 6 |
| 7 This file is part of XEmacs. | |
| 8 | |
| 9 XEmacs is free software; you can redistribute it and/or modify it | |
| 10 under the terms of the GNU General Public License as published by the | |
| 11 Free Software Foundation; either version 2, or (at your option) any | |
| 12 later version. | |
| 13 | |
| 14 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 17 for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU General Public License | |
| 20 along with XEmacs; see the file COPYING. If not, write to | |
| 21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 22 Boston, MA 02111-1307, USA. */ | |
| 23 | |
| 771 | 24 /* Synched up with: Not in FSF. */ |
| 25 | |
| 26 /* Authorship: | |
| 27 | |
| 28 Current primary author: Ben Wing <ben@xemacs.org> | |
| 29 | |
| 30 Rewritten by Ben Wing <ben@xemacs.org>, based originally on coding.c | |
| 31 from Mule 2.? but probably does not share one line of code with that | |
| 32 original source. Rewriting work started around Dec. 1994. or Jan. 1995. | |
| 33 Proceeded in earnest till Nov. 1995. | |
| 34 | |
| 35 Around Feb. 17, 1998, Andy Piper renamed what was then mule-coding.c to | |
| 36 file-coding.c, with the intention of using it to do end-of-line conversion | |
| 37 on non-MULE machines (specifically, on Windows machines). He separated | |
| 38 out the MULE stuff from non-MULE using ifdef's, and searched throughout | |
| 39 the rest of the source tree looking for coding-system-related code that | |
| 40 was ifdef MULE but should be ifdef HAVE_CODING_SYSTEMS. | |
| 41 | |
| 42 Sept. 4 - 8, 1998, Tomohiko Morioka added the UCS_4 and UTF_8 coding system | |
| 43 types, providing a primitive means of decoding and encoding externally- | |
| 44 formatted Unicode/UCS_4 and Unicode/UTF_8 data. | |
| 45 | |
| 46 January 25, 2000, Martin Buchholz redid and fleshed out the coding | |
| 47 system alias handling that was first added in prototype form by | |
| 48 Hrjove Niksic, April 15, 1999. | |
| 49 | |
| 50 April to May 2000, Ben Wing: More major reorganization. Adding features | |
| 51 needed for MS Windows (multibyte, unicode, unicode-to-multibyte), the | |
| 52 "chain" coding system for chaining two together, and doing a lot of | |
| 53 reorganization in preparation for properly abstracting out the different | |
| 54 coding system types. | |
| 55 | |
| 56 June 2001, Ben Wing: Added Unicode support. Eliminated previous | |
| 57 junky Unicode translation support. | |
| 58 | |
| 59 August 2001, Ben Wing: Moved Unicode support to unicode.c. Finished | |
| 60 abstracting everything except detection, which is hard to abstract (see | |
| 61 just below). | |
| 62 | |
| 63 September 2001, Ben Wing: Moved Mule code to mule-coding.c, Windows code | |
| 64 to intl-win32.c. Lots more rewriting; very little code is untouched | |
| 65 from before April 2000. Abstracted the detection code, added multiple | |
| 66 levels of likelihood to increase the reliability of the algorithm. | |
| 67 | |
| 68 October 2001, Ben Wing: HAVE_CODING_SYSTEMS is always now defined. | |
| 69 Removed the conditionals. | |
| 70 */ | |
| 71 | |
| 428 | 72 #include <config.h> |
| 73 #include "lisp.h" | |
| 74 | |
| 75 #include "buffer.h" | |
| 76 #include "elhash.h" | |
| 77 #include "insdel.h" | |
| 78 #include "lstream.h" | |
| 440 | 79 #include "opaque.h" |
| 771 | 80 #include "file-coding.h" |
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81 #include "extents.h" |
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82 #include "rangetab.h" |
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83 #include "chartab.h" |
| 771 | 84 |
| 85 #ifdef HAVE_ZLIB | |
| 86 #include "zlib.h" | |
| 428 | 87 #endif |
| 88 | |
| 89 Lisp_Object Vkeyboard_coding_system; | |
| 90 Lisp_Object Vterminal_coding_system; | |
| 91 Lisp_Object Vcoding_system_for_read; | |
| 92 Lisp_Object Vcoding_system_for_write; | |
| 93 Lisp_Object Vfile_name_coding_system; | |
| 94 | |
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95 Lisp_Object Qaliases, Qcharset_skip_chars_string; |
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96 |
| 771 | 97 #ifdef DEBUG_XEMACS |
| 98 Lisp_Object Vdebug_coding_detection; | |
| 440 | 99 #endif |
| 771 | 100 |
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101 #ifdef MULE |
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102 extern Lisp_Object Vcharset_ascii, Vcharset_control_1, |
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103 Vcharset_latin_iso8859_1; |
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104 #endif |
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105 |
| 771 | 106 typedef struct coding_system_type_entry |
| 107 { | |
| 108 struct coding_system_methods *meths; | |
| 109 } coding_system_type_entry; | |
| 110 | |
| 111 typedef struct | |
| 112 { | |
| 113 Dynarr_declare (coding_system_type_entry); | |
| 114 } coding_system_type_entry_dynarr; | |
| 115 | |
| 116 static coding_system_type_entry_dynarr *the_coding_system_type_entry_dynarr; | |
| 117 | |
| 1204 | 118 static const struct memory_description cste_description_1[] = { |
| 2551 | 119 { XD_BLOCK_PTR, offsetof (coding_system_type_entry, meths), 1, |
| 120 { &coding_system_methods_description } }, | |
| 771 | 121 { XD_END } |
| 122 }; | |
| 123 | |
| 1204 | 124 static const struct sized_memory_description cste_description = { |
| 771 | 125 sizeof (coding_system_type_entry), |
| 126 cste_description_1 | |
| 127 }; | |
| 128 | |
| 1204 | 129 static const struct memory_description csted_description_1[] = { |
| 771 | 130 XD_DYNARR_DESC (coding_system_type_entry_dynarr, &cste_description), |
| 428 | 131 { XD_END } |
| 132 }; | |
| 133 | |
| 1204 | 134 static const struct sized_memory_description csted_description = { |
| 771 | 135 sizeof (coding_system_type_entry_dynarr), |
| 136 csted_description_1 | |
| 137 }; | |
| 138 | |
| 139 static Lisp_Object Vcoding_system_type_list; | |
| 140 | |
| 141 /* Coding system currently associated with each coding category. */ | |
| 142 Lisp_Object coding_category_system[MAX_DETECTOR_CATEGORIES]; | |
| 143 | |
| 144 /* Table of all coding categories in decreasing order of priority. | |
| 145 This describes a permutation of the possible coding categories. */ | |
| 146 int coding_category_by_priority[MAX_DETECTOR_CATEGORIES]; | |
| 147 | |
| 148 /* Value used with to give a unique name to nameless coding systems */ | |
| 149 int coding_system_tick; | |
| 150 | |
| 151 int coding_detector_count; | |
| 152 int coding_detector_category_count; | |
| 153 | |
| 154 detector_dynarr *all_coding_detectors; | |
| 155 | |
| 1204 | 156 static const struct memory_description struct_detector_category_description_1[] |
| 771 | 157 = |
| 158 { | |
| 159 { XD_LISP_OBJECT, offsetof (struct detector_category, sym) }, | |
| 160 { XD_END } | |
| 161 }; | |
| 162 | |
| 1204 | 163 static const struct sized_memory_description struct_detector_category_description = |
| 771 | 164 { |
| 165 sizeof (struct detector_category), | |
| 166 struct_detector_category_description_1 | |
| 428 | 167 }; |
| 168 | |
| 1204 | 169 static const struct memory_description detector_category_dynarr_description_1[] = |
| 771 | 170 { |
| 171 XD_DYNARR_DESC (detector_category_dynarr, | |
| 172 &struct_detector_category_description), | |
| 173 { XD_END } | |
| 174 }; | |
| 175 | |
| 1204 | 176 static const struct sized_memory_description detector_category_dynarr_description = { |
| 771 | 177 sizeof (detector_category_dynarr), |
| 178 detector_category_dynarr_description_1 | |
| 179 }; | |
| 180 | |
| 1204 | 181 static const struct memory_description struct_detector_description_1[] |
| 771 | 182 = |
| 183 { | |
| 2367 | 184 { XD_BLOCK_PTR, offsetof (struct detector, cats), 1, |
| 2551 | 185 { &detector_category_dynarr_description } }, |
| 771 | 186 { XD_END } |
| 187 }; | |
| 188 | |
| 1204 | 189 static const struct sized_memory_description struct_detector_description = |
| 771 | 190 { |
| 191 sizeof (struct detector), | |
| 192 struct_detector_description_1 | |
| 193 }; | |
| 194 | |
| 1204 | 195 static const struct memory_description detector_dynarr_description_1[] = |
| 771 | 196 { |
| 197 XD_DYNARR_DESC (detector_dynarr, &struct_detector_description), | |
| 198 { XD_END } | |
| 199 }; | |
| 200 | |
| 1204 | 201 static const struct sized_memory_description detector_dynarr_description = { |
| 771 | 202 sizeof (detector_dynarr), |
| 203 detector_dynarr_description_1 | |
| 204 }; | |
| 428 | 205 |
| 206 Lisp_Object Qcoding_systemp; | |
| 207 | |
| 771 | 208 Lisp_Object Qraw_text; |
| 428 | 209 |
| 210 Lisp_Object Qmnemonic, Qeol_type; | |
| 211 Lisp_Object Qcr, Qcrlf, Qlf; | |
| 212 Lisp_Object Qeol_cr, Qeol_crlf, Qeol_lf; | |
| 213 Lisp_Object Qpost_read_conversion; | |
| 214 Lisp_Object Qpre_write_conversion; | |
| 215 | |
| 771 | 216 Lisp_Object Qtranslation_table_for_decode; |
| 217 Lisp_Object Qtranslation_table_for_encode; | |
| 218 Lisp_Object Qsafe_chars; | |
| 219 Lisp_Object Qsafe_charsets; | |
| 220 Lisp_Object Qmime_charset; | |
| 221 Lisp_Object Qvalid_codes; | |
| 222 | |
| 223 Lisp_Object Qno_conversion; | |
| 224 Lisp_Object Qconvert_eol; | |
| 440 | 225 Lisp_Object Qescape_quoted; |
| 771 | 226 Lisp_Object Qencode, Qdecode; |
| 227 | |
| 228 Lisp_Object Qconvert_eol_lf, Qconvert_eol_cr, Qconvert_eol_crlf; | |
| 229 Lisp_Object Qconvert_eol_autodetect; | |
| 230 | |
| 231 Lisp_Object Qnear_certainty, Qquite_probable, Qsomewhat_likely; | |
| 1494 | 232 Lisp_Object Qslightly_likely; |
| 771 | 233 Lisp_Object Qas_likely_as_unlikely, Qsomewhat_unlikely, Qquite_improbable; |
| 234 Lisp_Object Qnearly_impossible; | |
| 235 | |
| 236 Lisp_Object Qdo_eol, Qdo_coding; | |
| 237 | |
| 238 Lisp_Object Qcanonicalize_after_coding; | |
| 239 | |
| 1347 | 240 Lisp_Object QScoding_system_cookie; |
| 241 | |
| 4303 | 242 Lisp_Object Qposix_charset_to_coding_system_hash; |
| 243 | |
| 771 | 244 /* This is used to convert autodetected coding systems into existing |
| 245 systems. For example, the chain undecided->convert-eol-autodetect may | |
| 246 have its separate parts detected as mswindows-multibyte and | |
| 247 convert-eol-crlf, and the result needs to be mapped to | |
| 248 mswindows-multibyte-dos. */ | |
| 249 /* #### It's not clear we need this whole chain-canonicalize mechanism | |
| 250 any more. */ | |
| 251 static Lisp_Object Vchain_canonicalize_hash_table; | |
| 252 | |
| 253 #ifdef HAVE_ZLIB | |
| 254 Lisp_Object Qgzip; | |
| 428 | 255 #endif |
| 771 | 256 |
| 2297 | 257 /* Maps symbols (coding system names) to either coding system objects or |
| 258 (for aliases) other names. */ | |
| 771 | 259 static Lisp_Object Vcoding_system_hash_table; |
| 428 | 260 |
| 261 int enable_multibyte_characters; | |
| 262 | |
| 263 EXFUN (Fcopy_coding_system, 2); | |
| 264 | |
| 265 | |
| 266 /************************************************************************/ | |
| 771 | 267 /* Coding system object methods */ |
| 428 | 268 /************************************************************************/ |
| 269 | |
| 270 static Lisp_Object | |
| 271 mark_coding_system (Lisp_Object obj) | |
| 272 { | |
| 273 Lisp_Coding_System *codesys = XCODING_SYSTEM (obj); | |
| 274 | |
| 1204 | 275 #define MARKED_SLOT(x) mark_object (codesys->x); |
| 276 #include "coding-system-slots.h" | |
| 771 | 277 |
| 278 MAYBE_CODESYSMETH (codesys, mark, (obj)); | |
| 428 | 279 |
| 1204 | 280 return Qnil; |
| 428 | 281 } |
| 282 | |
| 283 static void | |
| 771 | 284 print_coding_system_properties (Lisp_Object obj, Lisp_Object printcharfun) |
| 285 { | |
| 286 Lisp_Coding_System *c = XCODING_SYSTEM (obj); | |
| 287 print_internal (c->methods->type, printcharfun, 1); | |
| 288 MAYBE_CODESYSMETH (c, print, (obj, printcharfun, 1)); | |
| 289 if (CODING_SYSTEM_EOL_TYPE (c) != EOL_AUTODETECT) | |
| 290 write_fmt_string_lisp (printcharfun, " eol-type=%s", | |
| 291 1, Fcoding_system_property (obj, Qeol_type)); | |
| 292 } | |
| 293 | |
| 294 static void | |
| 428 | 295 print_coding_system (Lisp_Object obj, Lisp_Object printcharfun, |
| 2286 | 296 int UNUSED (escapeflag)) |
| 428 | 297 { |
| 298 Lisp_Coding_System *c = XCODING_SYSTEM (obj); | |
| 299 if (print_readably) | |
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300 printing_unreadable_lisp_object (obj, 0); |
| 771 | 301 |
| 302 write_fmt_string_lisp (printcharfun, "#<coding-system %s ", 1, c->name); | |
| 303 print_coding_system_properties (obj, printcharfun); | |
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304 write_ascstring (printcharfun, ">"); |
| 428 | 305 } |
| 306 | |
| 771 | 307 /* Print an abbreviated version of a coding system (but still containing |
| 308 all the information), for use within a coding system print method. */ | |
| 309 | |
| 310 static void | |
| 311 print_coding_system_in_print_method (Lisp_Object cs, Lisp_Object printcharfun, | |
| 2286 | 312 int UNUSED (escapeflag)) |
| 771 | 313 { |
| 800 | 314 write_fmt_string_lisp (printcharfun, "%s[", 1, XCODING_SYSTEM_NAME (cs)); |
| 771 | 315 print_coding_system_properties (cs, printcharfun); |
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316 write_ascstring (printcharfun, "]"); |
| 771 | 317 } |
| 318 | |
| 3263 | 319 #ifndef NEW_GC |
| 428 | 320 static void |
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321 finalize_coding_system (Lisp_Object obj) |
| 428 | 322 { |
| 323 /* Since coding systems never go away, this function is not | |
| 324 necessary. But it would be necessary if we changed things | |
| 325 so that coding systems could go away. */ | |
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326 MAYBE_XCODESYSMETH (obj, finalize, (obj)); |
| 771 | 327 } |
| 3263 | 328 #endif /* not NEW_GC */ |
| 771 | 329 |
| 330 static Bytecount | |
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331 sizeof_coding_system (Lisp_Object obj) |
| 771 | 332 { |
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333 const Lisp_Coding_System *p = XCODING_SYSTEM (obj); |
| 771 | 334 return offsetof (Lisp_Coding_System, data) + p->methods->extra_data_size; |
| 428 | 335 } |
| 336 | |
| 1204 | 337 static const struct memory_description coding_system_methods_description_1[] |
| 771 | 338 = { |
| 339 { XD_LISP_OBJECT, | |
| 340 offsetof (struct coding_system_methods, type) }, | |
| 341 { XD_LISP_OBJECT, | |
| 342 offsetof (struct coding_system_methods, predicate_symbol) }, | |
| 343 { XD_END } | |
| 344 }; | |
| 345 | |
| 1204 | 346 const struct sized_memory_description coding_system_methods_description = { |
| 771 | 347 sizeof (struct coding_system_methods), |
| 348 coding_system_methods_description_1 | |
| 349 }; | |
| 350 | |
| 1204 | 351 static const struct sized_memory_description coding_system_extra_description_map[] = |
| 352 { | |
| 353 { offsetof (Lisp_Coding_System, methods) }, | |
| 354 { offsetof (struct coding_system_methods, extra_description) }, | |
| 355 { -1 }, | |
| 771 | 356 }; |
| 357 | |
| 1204 | 358 static const struct memory_description coding_system_description[] = |
| 428 | 359 { |
| 2367 | 360 { XD_BLOCK_PTR, offsetof (Lisp_Coding_System, methods), 1, |
| 2551 | 361 { &coding_system_methods_description } }, |
| 1204 | 362 #define MARKED_SLOT(x) { XD_LISP_OBJECT, offsetof (Lisp_Coding_System, x) }, |
| 363 #define MARKED_SLOT_ARRAY(slot, size) \ | |
| 364 { XD_LISP_OBJECT_ARRAY, offsetof (Lisp_Coding_System, slot), size }, | |
| 365 #include "coding-system-slots.h" | |
| 2367 | 366 { XD_BLOCK_ARRAY, offsetof (Lisp_Coding_System, data), 1, |
| 2551 | 367 { coding_system_extra_description_map } }, |
| 1204 | 368 { XD_END } |
| 771 | 369 }; |
| 370 | |
| 1204 | 371 static const struct memory_description coding_system_empty_extra_description_1[] = |
| 372 { | |
| 373 { XD_END } | |
| 374 }; | |
| 375 | |
| 376 const struct sized_memory_description coding_system_empty_extra_description = { | |
| 377 0, coding_system_empty_extra_description_1 | |
| 378 }; | |
| 379 | |
| 3263 | 380 #ifdef NEW_GC |
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381 DEFINE_DUMPABLE_SIZABLE_LISP_OBJECT ("coding-system", coding_system, |
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382 mark_coding_system, |
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383 print_coding_system, |
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384 0, 0, 0, coding_system_description, |
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385 sizeof_coding_system, |
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386 Lisp_Coding_System); |
| 3263 | 387 #else /* not NEW_GC */ |
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388 DEFINE_DUMPABLE_SIZABLE_LISP_OBJECT ("coding-system", coding_system, |
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389 mark_coding_system, |
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390 print_coding_system, |
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391 finalize_coding_system, |
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392 0, 0, coding_system_description, |
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393 sizeof_coding_system, |
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394 Lisp_Coding_System); |
| 3263 | 395 #endif /* not NEW_GC */ |
| 771 | 396 |
| 397 /************************************************************************/ | |
| 398 /* Creating coding systems */ | |
| 399 /************************************************************************/ | |
| 400 | |
| 401 static struct coding_system_methods * | |
| 402 decode_coding_system_type (Lisp_Object type, Error_Behavior errb) | |
| 428 | 403 { |
| 771 | 404 int i; |
| 405 | |
| 406 for (i = 0; i < Dynarr_length (the_coding_system_type_entry_dynarr); i++) | |
| 428 | 407 { |
| 771 | 408 if (EQ (type, |
| 409 Dynarr_at (the_coding_system_type_entry_dynarr, i).meths->type)) | |
| 410 return Dynarr_at (the_coding_system_type_entry_dynarr, i).meths; | |
| 428 | 411 } |
| 771 | 412 |
| 413 maybe_invalid_constant ("Invalid coding system type", type, | |
| 414 Qcoding_system, errb); | |
| 415 | |
| 416 return 0; | |
| 428 | 417 } |
| 418 | |
| 771 | 419 static int |
| 420 valid_coding_system_type_p (Lisp_Object type) | |
| 428 | 421 { |
| 771 | 422 return decode_coding_system_type (type, ERROR_ME_NOT) != 0; |
| 423 } | |
| 424 | |
|
4690
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|
425 #ifdef MULE |
|
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Move the #'query-coding-region implementation to C.
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|
426 static Lisp_Object Vdefault_query_coding_region_chartab_cache; |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
427 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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changeset
|
428 /* Non-static because it's used in INITIALIZE_CODING_SYSTEM_TYPE_WITH_DATA. */ |
|
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Move the #'query-coding-region implementation to C.
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|
429 Lisp_Object |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
430 default_query_method (Lisp_Object codesys, struct buffer *buf, |
|
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Move the #'query-coding-region implementation to C.
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|
431 Charbpos end, int flags) |
|
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Move the #'query-coding-region implementation to C.
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|
432 { |
|
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Move the #'query-coding-region implementation to C.
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|
433 Charbpos pos = BUF_PT (buf), fail_range_start, fail_range_end; |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
434 Charbpos pos_byte = BYTE_BUF_PT (buf); |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
435 Lisp_Object safe_charsets = XCODING_SYSTEM_SAFE_CHARSETS (codesys); |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
436 Lisp_Object safe_chars = XCODING_SYSTEM_SAFE_CHARS (codesys), |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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changeset
|
437 result = Qnil; |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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changeset
|
438 enum query_coding_failure_reasons failed_reason, |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
439 previous_failed_reason = query_coding_succeeded; |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
440 |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
441 /* safe-charsets of t means the coding system can encode everything. */ |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
442 if (EQ (Qnil, safe_chars)) |
|
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changeset
|
443 { |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
444 if (EQ (Qt, safe_charsets)) |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
445 { |
|
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Move the #'query-coding-region implementation to C.
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|
446 return Qnil; |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
447 } |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
448 |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
449 /* If we've no information on what characters the coding system can |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
450 encode, give up. */ |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
451 if (EQ (Qnil, safe_charsets) && EQ (Qnil, safe_chars)) |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
452 { |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
453 return Qunbound; |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
454 } |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
455 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
456 safe_chars = Fgethash (safe_charsets, |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
457 Vdefault_query_coding_region_chartab_cache, |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
458 Qnil); |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
459 if (NILP (safe_chars)) |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
460 { |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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diff
changeset
|
461 safe_chars = Fmake_char_table (Qgeneric); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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diff
changeset
|
462 { |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
463 EXTERNAL_LIST_LOOP_2 (safe_charset, safe_charsets) |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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diff
changeset
|
464 Fput_char_table (safe_charset, Qt, safe_chars); |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
465 } |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
466 |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
467 Fputhash (safe_charsets, safe_chars, |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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diff
changeset
|
468 Vdefault_query_coding_region_chartab_cache); |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
469 } |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
470 } |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
471 |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
472 if (flags & QUERY_METHOD_HIGHLIGHT && |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
473 /* If we're being called really early, live without highlights getting |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
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diff
changeset
|
474 cleared properly: */ |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
475 !(UNBOUNDP (XSYMBOL (Qquery_coding_clear_highlights)->function))) |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
476 { |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
477 /* It's okay to call Lisp here, the only non-stack object we may have |
|
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Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
478 allocated up to this point is safe_chars, and that's |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
479 reachable from its entry in |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
480 Vdefault_query_coding_region_chartab_cache */ |
|
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Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
481 call3 (Qquery_coding_clear_highlights, make_int (pos), make_int (end), |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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diff
changeset
|
482 wrap_buffer (buf)); |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
483 } |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
484 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
485 while (pos < end) |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
486 { |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
487 Ichar ch = BYTE_BUF_FETCH_CHAR (buf, pos_byte); |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
488 if (!EQ (Qnil, get_char_table (ch, safe_chars))) |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
489 { |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
490 pos++; |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
491 INC_BYTEBPOS (buf, pos_byte); |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
492 } |
|
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Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
493 else |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
494 { |
|
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Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
495 fail_range_start = pos; |
|
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Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
496 while ((pos < end) && |
|
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4647
diff
changeset
|
497 (EQ (Qnil, get_char_table (ch, safe_chars)) |
|
4839
5f1c6ca4d05e
fix bad change to default_query_method, rewrite conditional for more correctness
Ben Wing <ben@xemacs.org>
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4830
diff
changeset
|
498 && (failed_reason = query_coding_unencodable, |
|
5f1c6ca4d05e
fix bad change to default_query_method, rewrite conditional for more correctness
Ben Wing <ben@xemacs.org>
parents:
4830
diff
changeset
|
499 (previous_failed_reason == query_coding_succeeded |
|
5f1c6ca4d05e
fix bad change to default_query_method, rewrite conditional for more correctness
Ben Wing <ben@xemacs.org>
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4830
diff
changeset
|
500 || previous_failed_reason == failed_reason)))) |
|
4690
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
501 { |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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changeset
|
502 pos++; |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
503 INC_BYTEBPOS (buf, pos_byte); |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
504 ch = BYTE_BUF_FETCH_CHAR (buf, pos_byte); |
|
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Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
505 previous_failed_reason = failed_reason; |
|
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4647
diff
changeset
|
506 } |
|
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Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
507 |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
508 if (fail_range_start == pos) |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
509 { |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
510 /* The character can actually be encoded; move on. */ |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
511 pos++; |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
512 INC_BYTEBPOS (buf, pos_byte); |
|
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4647
diff
changeset
|
513 } |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
514 else |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
515 { |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
516 assert (previous_failed_reason == query_coding_unencodable); |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
517 |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
518 if (flags & QUERY_METHOD_ERRORP) |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
519 { |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
520 signal_error_2 |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
521 (Qtext_conversion_error, |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
522 "Cannot encode using coding system", |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
523 make_string_from_buffer (buf, fail_range_start, |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
524 pos - fail_range_start), |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
525 XCODING_SYSTEM_NAME (codesys)); |
|
4690
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
526 } |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
527 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
528 if (NILP (result)) |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
529 { |
|
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Move the #'query-coding-region implementation to C.
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4647
diff
changeset
|
530 result = Fmake_range_table (Qstart_closed_end_open); |
|
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Move the #'query-coding-region implementation to C.
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diff
changeset
|
531 } |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
532 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
533 fail_range_end = pos; |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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534 |
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535 Fput_range_table (make_int (fail_range_start), |
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536 make_int (fail_range_end), |
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537 Qunencodable, |
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538 result); |
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539 previous_failed_reason = query_coding_succeeded; |
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540 |
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541 if (flags & QUERY_METHOD_HIGHLIGHT) |
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542 { |
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543 Lisp_Object extent |
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544 = Fmake_extent (make_int (fail_range_start), |
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545 make_int (fail_range_end), |
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546 wrap_buffer (buf)); |
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547 |
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548 Fset_extent_priority |
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549 (extent, make_int (2 + mouse_highlight_priority)); |
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550 Fset_extent_face (extent, Qquery_coding_warning_face); |
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551 } |
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552 } |
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553 } |
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554 } |
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555 |
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556 return result; |
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557 } |
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558 #else |
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559 Lisp_Object |
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560 default_query_method (Lisp_Object UNUSED (codesys), |
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561 struct buffer * UNUSED (buf), |
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562 Charbpos UNUSED (end), int UNUSED (flags)) |
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563 { |
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564 return Qnil; |
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565 } |
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566 #endif /* defined MULE */ |
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567 |
| 771 | 568 DEFUN ("valid-coding-system-type-p", Fvalid_coding_system_type_p, 1, 1, 0, /* |
| 569 Given a CODING-SYSTEM-TYPE, return non-nil if it is valid. | |
| 570 Valid types depend on how XEmacs was compiled but may include | |
| 3025 | 571 `undecided', `chain', `integer', `ccl', `iso2022', `big5', `shift-jis', |
| 572 `utf-16', `ucs-4', `utf-8', etc. | |
| 771 | 573 */ |
| 574 (coding_system_type)) | |
| 575 { | |
| 576 return valid_coding_system_type_p (coding_system_type) ? Qt : Qnil; | |
| 577 } | |
| 578 | |
| 579 DEFUN ("coding-system-type-list", Fcoding_system_type_list, 0, 0, 0, /* | |
| 580 Return a list of valid coding system types. | |
| 581 */ | |
| 582 ()) | |
| 583 { | |
| 584 return Fcopy_sequence (Vcoding_system_type_list); | |
| 585 } | |
| 586 | |
| 587 void | |
| 588 add_entry_to_coding_system_type_list (struct coding_system_methods *meths) | |
| 589 { | |
| 590 struct coding_system_type_entry entry; | |
| 591 | |
| 592 entry.meths = meths; | |
| 593 Dynarr_add (the_coding_system_type_entry_dynarr, entry); | |
| 594 Vcoding_system_type_list = Fcons (meths->type, Vcoding_system_type_list); | |
| 428 | 595 } |
| 596 | |
| 597 DEFUN ("coding-system-p", Fcoding_system_p, 1, 1, 0, /* | |
| 598 Return t if OBJECT is a coding system. | |
| 599 A coding system is an object that defines how text containing multiple | |
| 600 character sets is encoded into a stream of (typically 8-bit) bytes. | |
| 601 The coding system is used to decode the stream into a series of | |
| 602 characters (which may be from multiple charsets) when the text is read | |
| 603 from a file or process, and is used to encode the text back into the | |
| 604 same format when it is written out to a file or process. | |
| 605 | |
| 606 For example, many ISO2022-compliant coding systems (such as Compound | |
| 607 Text, which is used for inter-client data under the X Window System) | |
| 608 use escape sequences to switch between different charsets -- Japanese | |
| 609 Kanji, for example, is invoked with "ESC $ ( B"; ASCII is invoked | |
| 610 with "ESC ( B"; and Cyrillic is invoked with "ESC - L". See | |
| 611 `make-coding-system' for more information. | |
| 612 | |
| 613 Coding systems are normally identified using a symbol, and the | |
| 614 symbol is accepted in place of the actual coding system object whenever | |
| 615 a coding system is called for. (This is similar to how faces work.) | |
| 616 */ | |
| 617 (object)) | |
| 618 { | |
| 619 return CODING_SYSTEMP (object) ? Qt : Qnil; | |
| 620 } | |
| 621 | |
| 4303 | 622 static Lisp_Object |
| 623 find_coding_system (Lisp_Object coding_system_or_name, | |
| 624 int do_autoloads) | |
| 625 { | |
| 626 Lisp_Object lookup; | |
| 627 | |
| 628 if (NILP (coding_system_or_name)) | |
| 629 coding_system_or_name = Qbinary; | |
| 630 else if (CODING_SYSTEMP (coding_system_or_name)) | |
| 631 return coding_system_or_name; | |
| 632 else | |
| 633 CHECK_SYMBOL (coding_system_or_name); | |
| 634 | |
| 635 while (1) | |
| 636 { | |
| 637 lookup = | |
| 638 Fgethash (coding_system_or_name, Vcoding_system_hash_table, Qnil); | |
| 639 | |
| 640 if (CONSP (lookup) && do_autoloads) | |
| 641 { | |
| 642 struct gcpro gcpro1; | |
| 643 int length; | |
| 644 DECLARE_EISTRING (desired_base); | |
| 645 DECLARE_EISTRING (warning_info); | |
| 646 | |
| 647 eicpy_lstr (desired_base, XSYMBOL_NAME (coding_system_or_name)); | |
| 648 | |
| 649 /* Work out the name of the base coding system. */ | |
| 650 length = eilen (desired_base); | |
| 651 if (length > (int)(sizeof ("-unix") - 1)) | |
| 652 { | |
| 653 if (0 == qxestrcmp ((UAscbyte *)"-unix", (eidata (desired_base)) | |
| 654 + (length - (sizeof ("-unix") - 1)))) | |
| 655 { | |
| 656 eidel (desired_base, length - (sizeof ("-unix") - 1), | |
| 657 -1, 5, 5); | |
| 658 } | |
| 659 } | |
| 660 else if (length > (int)(sizeof ("-dos") - 1)) | |
| 661 { | |
| 662 if ((0 == qxestrcmp ((UAscbyte *)"-dos", (eidata (desired_base)) | |
| 663 + (length - (sizeof ("-dos") - 1)))) || | |
| 664 (0 == qxestrcmp ((UAscbyte *)"-mac", (eidata (desired_base)) | |
| 665 + (length - (sizeof ("-mac") - 1))))) | |
| 666 { | |
| 667 eidel (desired_base, length - (sizeof ("-dos") - 1), -1, | |
| 668 4, 4); | |
| 669 } | |
| 670 } | |
| 671 | |
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672 coding_system_or_name = intern_istring (eidata (desired_base)); |
| 4303 | 673 |
| 674 /* Remove this coding system and its subsidiary coding | |
| 675 systems from the hash, to avoid calling this code recursively. */ | |
| 676 Fremhash (coding_system_or_name, Vcoding_system_hash_table); | |
| 677 Fremhash (add_suffix_to_symbol(coding_system_or_name, "-unix"), | |
| 678 Vcoding_system_hash_table); | |
| 679 Fremhash (add_suffix_to_symbol(coding_system_or_name, "-dos"), | |
| 680 Vcoding_system_hash_table); | |
| 681 Fremhash (add_suffix_to_symbol(coding_system_or_name, "-mac"), | |
| 682 Vcoding_system_hash_table); | |
| 683 | |
| 684 eicpy_ascii (warning_info, "Error autoloading coding system "); | |
| 685 eicat_lstr (warning_info, XSYMBOL_NAME (coding_system_or_name)); | |
| 686 | |
| 687 /* Keep around the form so it doesn't disappear from under | |
| 688 #'eval's feet. */ | |
| 689 GCPRO1 (lookup); | |
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690 call1_trapping_problems ((const CIbyte *) eidata (warning_info), |
| 4303 | 691 Qeval, lookup, 0); |
| 692 UNGCPRO; | |
| 693 | |
| 694 lookup = | |
| 695 Fgethash (coding_system_or_name, Vcoding_system_hash_table, Qnil); | |
| 696 } | |
| 697 | |
| 698 if (CODING_SYSTEMP (lookup) || NILP (lookup)) | |
| 699 return lookup; | |
| 700 | |
| 701 coding_system_or_name = lookup; | |
| 702 } | |
| 703 } | |
| 704 | |
| 428 | 705 DEFUN ("find-coding-system", Ffind_coding_system, 1, 1, 0, /* |
| 706 Retrieve the coding system of the given name. | |
| 707 | |
| 708 If CODING-SYSTEM-OR-NAME is a coding-system object, it is simply | |
| 709 returned. Otherwise, CODING-SYSTEM-OR-NAME should be a symbol. | |
| 710 If there is no such coding system, nil is returned. Otherwise the | |
| 711 associated coding system object is returned. | |
| 712 */ | |
| 713 (coding_system_or_name)) | |
| 714 { | |
| 4303 | 715 return find_coding_system(coding_system_or_name, 1); |
| 716 } | |
| 717 | |
| 718 DEFUN ("autoload-coding-system", Fautoload_coding_system, 2, 2, 0, /* | |
| 719 Define SYMBOL as a coding-system that is loaded on demand. | |
| 720 | |
| 721 FORM is a form to evaluate to define the coding-system. | |
| 722 */ | |
| 723 (symbol, form)) | |
| 724 { | |
| 725 Lisp_Object lookup; | |
| 726 | |
| 727 CHECK_SYMBOL (symbol); | |
| 728 CHECK_CONS (form); | |
| 729 | |
| 730 lookup = find_coding_system (symbol, 0); | |
| 731 | |
| 732 if (!NILP (lookup) && | |
| 733 /* Allow autoloads to be redefined. */ | |
| 734 !CONSP (lookup)) | |
| 440 | 735 { |
| 4303 | 736 invalid_operation ("Cannot redefine existing coding system", |
| 737 symbol); | |
| 440 | 738 } |
| 4303 | 739 |
| 740 Fputhash (symbol, form, Vcoding_system_hash_table); | |
| 741 Fputhash (add_suffix_to_symbol(symbol, "-unix"), form, | |
| 742 Vcoding_system_hash_table); | |
| 743 Fputhash (add_suffix_to_symbol(symbol, "-dos"), form, | |
| 744 Vcoding_system_hash_table); | |
| 745 Fputhash (add_suffix_to_symbol(symbol, "-mac"), form, | |
| 746 Vcoding_system_hash_table); | |
| 747 | |
| 748 /* Tell the POSIX locale infrastructure about this coding system (though | |
| 749 unfortunately it'll be too late for the startup locale sniffing. */ | |
| 750 if (!UNBOUNDP (Qposix_charset_to_coding_system_hash)) | |
| 751 { | |
| 752 Lisp_Object val = Fsymbol_value (Qposix_charset_to_coding_system_hash); | |
| 753 DECLARE_EISTRING (minimal_name); | |
| 754 Ibyte *full_name; | |
| 755 int len = XSTRING_LENGTH (XSYMBOL_NAME (symbol)), i; | |
| 756 | |
| 757 if (!NILP (val)) | |
| 758 { | |
| 759 full_name = XSTRING_DATA (XSYMBOL_NAME (symbol)); | |
| 760 for (i = 0; i < len; ++i) | |
| 761 { | |
| 762 if (full_name[i] >= '0' && full_name[i] <= '9') | |
| 763 { | |
| 764 eicat_ch (minimal_name, full_name[i]); | |
| 765 } | |
| 766 else if (full_name[i] >= 'a' && full_name[i] <= 'z') | |
| 767 { | |
| 768 eicat_ch (minimal_name, full_name[i]); | |
| 769 } | |
| 770 else if (full_name[i] >= 'A' && full_name[i] <= 'Z') | |
| 771 { | |
| 772 eicat_ch (minimal_name, full_name[i] + | |
| 773 ('a' - 'A')); | |
| 774 } | |
| 775 } | |
| 776 | |
| 777 if (eilen (minimal_name)) | |
| 778 { | |
| 779 CHECK_HASH_TABLE (val); | |
| 780 Fputhash (eimake_string(minimal_name), symbol, val); | |
| 781 } | |
| 782 } | |
| 783 } | |
| 784 | |
| 785 return Qt; | |
| 428 | 786 } |
| 787 | |
| 788 DEFUN ("get-coding-system", Fget_coding_system, 1, 1, 0, /* | |
| 789 Retrieve the coding system of the given name. | |
| 790 Same as `find-coding-system' except that if there is no such | |
| 791 coding system, an error is signaled instead of returning nil. | |
| 792 */ | |
| 793 (name)) | |
| 794 { | |
| 795 Lisp_Object coding_system = Ffind_coding_system (name); | |
| 796 | |
| 797 if (NILP (coding_system)) | |
| 563 | 798 invalid_argument ("No such coding system", name); |
| 428 | 799 return coding_system; |
| 800 } | |
| 801 | |
| 771 | 802 int |
| 803 coding_system_is_binary (Lisp_Object coding_system) | |
| 804 { | |
| 805 Lisp_Coding_System *cs = XCODING_SYSTEM (coding_system); | |
| 806 return | |
| 807 (EQ (CODING_SYSTEM_TYPE (cs), Qno_conversion) && | |
| 808 CODING_SYSTEM_EOL_TYPE (cs) == EOL_LF && | |
| 809 EQ (CODING_SYSTEM_POST_READ_CONVERSION (cs), Qnil) && | |
| 810 EQ (CODING_SYSTEM_PRE_WRITE_CONVERSION (cs), Qnil)); | |
| 811 } | |
| 812 | |
| 813 static Lisp_Object | |
| 814 coding_system_real_canonical (Lisp_Object cs) | |
| 815 { | |
| 816 if (!NILP (XCODING_SYSTEM_CANONICAL (cs))) | |
| 817 return XCODING_SYSTEM_CANONICAL (cs); | |
| 818 return cs; | |
| 819 } | |
| 820 | |
| 821 /* Return true if coding system is of the "standard" type that decodes | |
| 822 bytes into characters (suitable for decoding a text file). */ | |
| 823 int | |
| 824 coding_system_is_for_text_file (Lisp_Object coding_system) | |
| 825 { | |
| 826 return (XCODESYSMETH_OR_GIVEN | |
| 827 (coding_system, conversion_end_type, | |
| 828 (coding_system_real_canonical (coding_system)), | |
| 829 DECODES_BYTE_TO_CHARACTER) == | |
| 830 DECODES_BYTE_TO_CHARACTER); | |
| 831 } | |
| 832 | |
| 833 static int | |
| 834 decoding_source_sink_type_is_char (Lisp_Object cs, enum source_or_sink sex) | |
| 835 { | |
| 836 enum source_sink_type type = | |
| 837 XCODESYSMETH_OR_GIVEN (cs, conversion_end_type, | |
| 838 (coding_system_real_canonical (cs)), | |
| 839 DECODES_BYTE_TO_CHARACTER); | |
| 840 if (sex == CODING_SOURCE) | |
| 841 return (type == DECODES_CHARACTER_TO_CHARACTER || | |
| 842 type == DECODES_CHARACTER_TO_BYTE); | |
| 843 else | |
| 844 return (type == DECODES_CHARACTER_TO_CHARACTER || | |
| 845 type == DECODES_BYTE_TO_CHARACTER); | |
| 846 } | |
| 847 | |
| 848 static int | |
| 849 encoding_source_sink_type_is_char (Lisp_Object cs, enum source_or_sink sex) | |
| 850 { | |
| 851 return decoding_source_sink_type_is_char (cs, | |
| 852 /* Sex change */ | |
| 853 sex == CODING_SOURCE ? | |
| 854 CODING_SINK : CODING_SOURCE); | |
| 855 } | |
| 856 | |
| 857 /* Like Ffind_coding_system() but check that the coding system is of the | |
| 858 "standard" type that decodes bytes into characters (suitable for | |
| 859 decoding a text file), and if not, returns an appropriate wrapper that | |
| 860 does. Also, if EOL_WRAP is non-zero, check whether this coding system | |
| 861 wants EOL auto-detection, and if so, wrap with a convert-eol coding | |
| 862 system to do this. */ | |
| 863 | |
| 864 Lisp_Object | |
| 865 find_coding_system_for_text_file (Lisp_Object name, int eol_wrap) | |
| 866 { | |
| 867 Lisp_Object coding_system = Ffind_coding_system (name); | |
| 868 Lisp_Object wrapper = coding_system; | |
| 869 | |
| 870 if (NILP (coding_system)) | |
| 871 return Qnil; | |
| 872 if (!coding_system_is_for_text_file (coding_system)) | |
| 873 { | |
| 874 wrapper = XCODING_SYSTEM_TEXT_FILE_WRAPPER (coding_system); | |
| 875 if (NILP (wrapper)) | |
| 876 { | |
| 877 Lisp_Object chain; | |
| 878 if (!decoding_source_sink_type_is_char (coding_system, CODING_SINK)) | |
| 879 chain = list2 (coding_system, Qbinary); | |
| 880 else | |
| 881 chain = list1 (coding_system); | |
| 882 if (decoding_source_sink_type_is_char (coding_system, CODING_SOURCE)) | |
| 883 chain = Fcons (Qbinary, chain); | |
| 884 wrapper = | |
| 885 make_internal_coding_system | |
| 886 (coding_system, | |
| 887 "internal-text-file-wrapper", | |
| 888 Qchain, | |
| 889 Qunbound, list4 (Qchain, chain, | |
| 890 Qcanonicalize_after_coding, coding_system)); | |
| 891 XCODING_SYSTEM_TEXT_FILE_WRAPPER (coding_system) = wrapper; | |
| 892 } | |
| 893 } | |
| 894 | |
| 895 if (!eol_wrap || XCODING_SYSTEM_EOL_TYPE (coding_system) != EOL_AUTODETECT) | |
| 896 return wrapper; | |
| 897 | |
| 898 coding_system = wrapper; | |
| 899 wrapper = XCODING_SYSTEM_AUTO_EOL_WRAPPER (coding_system); | |
| 900 if (!NILP (wrapper)) | |
| 901 return wrapper; | |
| 902 wrapper = | |
| 903 make_internal_coding_system | |
| 904 (coding_system, | |
| 905 "internal-auto-eol-wrapper", | |
| 906 Qundecided, Qunbound, | |
| 907 list4 (Qcoding_system, coding_system, | |
| 908 Qdo_eol, Qt)); | |
| 909 XCODING_SYSTEM_AUTO_EOL_WRAPPER (coding_system) = wrapper; | |
| 910 return wrapper; | |
| 911 } | |
| 912 | |
| 913 /* Like Fget_coding_system() but verify that the coding system is of the | |
| 914 "standard" type that decodes bytes into characters (suitable for | |
| 915 decoding a text file), and if not, returns an appropriate wrapper that | |
| 916 does. Also, if EOL_WRAP is non-zero, check whether this coding system | |
| 917 wants EOL auto-detection, and if so, wrap with a convert-eol coding | |
| 918 system to do this. */ | |
| 919 | |
| 920 Lisp_Object | |
| 921 get_coding_system_for_text_file (Lisp_Object name, int eol_wrap) | |
| 922 { | |
| 923 Lisp_Object coding_system = find_coding_system_for_text_file (name, | |
| 924 eol_wrap); | |
| 925 if (NILP (coding_system)) | |
| 926 invalid_argument ("No such coding system", name); | |
| 927 return coding_system; | |
| 928 } | |
| 929 | |
| 930 /* We store the coding systems in hash tables with the names as the | |
| 931 key and the actual coding system object as the value. Occasionally | |
| 932 we need to use them in a list format. These routines provide us | |
| 933 with that. */ | |
| 428 | 934 struct coding_system_list_closure |
| 935 { | |
| 936 Lisp_Object *coding_system_list; | |
| 771 | 937 int normal; |
| 938 int internal; | |
| 428 | 939 }; |
| 940 | |
| 941 static int | |
| 4303 | 942 add_coding_system_to_list_mapper (Lisp_Object key, Lisp_Object value, |
| 428 | 943 void *coding_system_list_closure) |
| 944 { | |
| 945 /* This function can GC */ | |
| 946 struct coding_system_list_closure *cscl = | |
| 947 (struct coding_system_list_closure *) coding_system_list_closure; | |
| 948 Lisp_Object *coding_system_list = cscl->coding_system_list; | |
| 949 | |
| 771 | 950 /* We can't just use VALUE because KEY might be an alias, and we need |
| 4303 | 951 the real coding system object. |
| 952 | |
| 953 Autoloaded coding systems have conses for their values, and can't be | |
| 954 internal coding systems, or coding system aliases. */ | |
| 955 if (CONSP (value) || | |
| 956 (XCODING_SYSTEM (Ffind_coding_system (key))->internal_p ? | |
| 957 cscl->internal : cscl->normal)) | |
| 771 | 958 *coding_system_list = Fcons (key, *coding_system_list); |
| 428 | 959 return 0; |
| 960 } | |
| 961 | |
| 2297 | 962 /* #### should we specify a conventional for "all coding systems"? */ |
| 771 | 963 DEFUN ("coding-system-list", Fcoding_system_list, 0, 1, 0, /* |
| 428 | 964 Return a list of the names of all defined coding systems. |
| 771 | 965 If INTERNAL is nil, only the normal (non-internal) coding systems are |
| 966 included. (Internal coding systems are created for various internal | |
| 967 purposes, such as implementing EOL types of CRLF and CR; generally, you do | |
| 968 not want to see these.) If it is t, only the internal coding systems are | |
| 969 included. If it is any other non-nil value both normal and internal are | |
| 970 included. | |
| 428 | 971 */ |
| 771 | 972 (internal)) |
| 428 | 973 { |
| 974 Lisp_Object coding_system_list = Qnil; | |
| 975 struct gcpro gcpro1; | |
| 976 struct coding_system_list_closure coding_system_list_closure; | |
| 977 | |
| 978 GCPRO1 (coding_system_list); | |
| 979 coding_system_list_closure.coding_system_list = &coding_system_list; | |
| 771 | 980 coding_system_list_closure.normal = !EQ (internal, Qt); |
| 981 coding_system_list_closure.internal = !NILP (internal); | |
| 428 | 982 elisp_maphash (add_coding_system_to_list_mapper, Vcoding_system_hash_table, |
| 983 &coding_system_list_closure); | |
| 984 UNGCPRO; | |
| 985 | |
| 986 return coding_system_list; | |
| 987 } | |
| 988 | |
| 989 DEFUN ("coding-system-name", Fcoding_system_name, 1, 1, 0, /* | |
| 990 Return the name of the given coding system. | |
| 991 */ | |
| 992 (coding_system)) | |
| 993 { | |
| 994 coding_system = Fget_coding_system (coding_system); | |
| 995 return XCODING_SYSTEM_NAME (coding_system); | |
| 996 } | |
| 997 | |
| 998 static Lisp_Coding_System * | |
| 771 | 999 allocate_coding_system (struct coding_system_methods *codesys_meths, |
| 1000 Bytecount data_size, | |
| 1001 Lisp_Object name) | |
| 428 | 1002 { |
| 771 | 1003 Bytecount total_size = offsetof (Lisp_Coding_System, data) + data_size; |
|
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1004 Lisp_Object obj = ALLOC_SIZED_LISP_OBJECT (total_size, coding_system); |
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1005 Lisp_Coding_System *codesys = XCODING_SYSTEM (obj); |
| 1204 | 1006 |
| 771 | 1007 codesys->methods = codesys_meths; |
| 1204 | 1008 #define MARKED_SLOT(x) codesys->x = Qnil; |
| 1009 #include "coding-system-slots.h" | |
| 1010 | |
| 771 | 1011 CODING_SYSTEM_EOL_TYPE (codesys) = EOL_LF; |
| 1012 CODING_SYSTEM_NAME (codesys) = name; | |
| 1013 | |
| 1014 MAYBE_CODESYSMETH (codesys, init, (wrap_coding_system (codesys))); | |
| 428 | 1015 |
| 1016 return codesys; | |
| 1017 } | |
| 1018 | |
| 771 | 1019 static enum eol_type |
| 1020 symbol_to_eol_type (Lisp_Object symbol) | |
| 1021 { | |
| 1022 CHECK_SYMBOL (symbol); | |
| 1023 if (NILP (symbol)) return EOL_AUTODETECT; | |
| 1024 if (EQ (symbol, Qlf)) return EOL_LF; | |
| 1025 if (EQ (symbol, Qcrlf)) return EOL_CRLF; | |
| 1026 if (EQ (symbol, Qcr)) return EOL_CR; | |
| 1027 | |
| 1028 invalid_constant ("Unrecognized eol type", symbol); | |
| 1204 | 1029 RETURN_NOT_REACHED (EOL_AUTODETECT); |
| 771 | 1030 } |
| 1031 | |
| 1032 static Lisp_Object | |
| 1033 eol_type_to_symbol (enum eol_type type) | |
| 1034 { | |
| 1035 switch (type) | |
| 1036 { | |
| 2500 | 1037 default: ABORT (); |
| 771 | 1038 case EOL_LF: return Qlf; |
| 1039 case EOL_CRLF: return Qcrlf; | |
| 1040 case EOL_CR: return Qcr; | |
| 1041 case EOL_AUTODETECT: return Qnil; | |
| 1042 } | |
| 1043 } | |
| 1044 | |
| 1045 struct subsidiary_type | |
| 1046 { | |
|
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1047 const Ascbyte *extension; |
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1048 const Ascbyte *mnemonic_ext; |
| 771 | 1049 enum eol_type eol; |
| 1050 }; | |
| 1051 | |
| 1052 static struct subsidiary_type coding_subsidiary_list[] = | |
| 1053 { { "-unix", "", EOL_LF }, | |
| 1054 { "-dos", ":T", EOL_CRLF }, | |
| 1055 { "-mac", ":t", EOL_CR } }; | |
| 1056 | |
| 1057 /* kludge */ | |
| 428 | 1058 static void |
| 771 | 1059 setup_eol_coding_systems (Lisp_Object codesys) |
| 428 | 1060 { |
| 793 | 1061 int len = XSTRING_LENGTH (XSYMBOL (XCODING_SYSTEM_NAME (codesys))->name); |
| 2367 | 1062 Ibyte *codesys_name = alloca_ibytes (len + 7); |
| 771 | 1063 int mlen = -1; |
| 867 | 1064 Ibyte *codesys_mnemonic = 0; |
| 771 | 1065 Lisp_Object codesys_name_sym, sub_codesys; |
| 1066 int i; | |
| 1067 | |
| 1068 memcpy (codesys_name, | |
| 793 | 1069 XSTRING_DATA (XSYMBOL (XCODING_SYSTEM_NAME (codesys))->name), len); |
| 771 | 1070 |
| 1071 if (STRINGP (XCODING_SYSTEM_MNEMONIC (codesys))) | |
| 428 | 1072 { |
| 771 | 1073 mlen = XSTRING_LENGTH (XCODING_SYSTEM_MNEMONIC (codesys)); |
| 2367 | 1074 codesys_mnemonic = alloca_ibytes (mlen + 7); |
| 771 | 1075 memcpy (codesys_mnemonic, |
| 1076 XSTRING_DATA (XCODING_SYSTEM_MNEMONIC (codesys)), mlen); | |
| 1077 } | |
| 1078 | |
| 1079 /* Create three "subsidiary" coding systems, decoding data encoded using | |
| 1080 each of the three EOL types. We do this for each subsidiary by | |
| 1081 copying the original coding system, setting the EOL type | |
| 1082 appropriately, and setting the CANONICAL member of the new coding | |
| 1083 system to be a chain consisting of the original coding system followed | |
| 1084 by a convert-eol coding system to do the EOL decoding. For EOL type | |
| 1085 LF, however, we don't need any decoding, so we skip creating a | |
| 1086 CANONICAL. | |
| 1087 | |
| 1088 If the original coding system is not a text-type coding system | |
| 1089 (decodes byte->char), we need to coerce it to one by the appropriate | |
| 1090 wrapping in CANONICAL. */ | |
| 1091 | |
| 1092 for (i = 0; i < countof (coding_subsidiary_list); i++) | |
| 1093 { | |
|
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1094 const Ascbyte *extension = coding_subsidiary_list[i].extension; |
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1095 const Ascbyte *mnemonic_ext = coding_subsidiary_list[i].mnemonic_ext; |
| 771 | 1096 enum eol_type eol = coding_subsidiary_list[i].eol; |
| 1097 | |
| 2367 | 1098 qxestrcpy_ascii (codesys_name + len, extension); |
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1099 codesys_name_sym = intern_istring (codesys_name); |
| 771 | 1100 if (mlen != -1) |
| 2367 | 1101 qxestrcpy_ascii (codesys_mnemonic + mlen, mnemonic_ext); |
| 771 | 1102 |
| 1103 sub_codesys = Fcopy_coding_system (codesys, codesys_name_sym); | |
| 1104 if (mlen != -1) | |
| 1105 XCODING_SYSTEM_MNEMONIC (sub_codesys) = | |
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1106 build_istring (codesys_mnemonic); |
| 771 | 1107 |
| 1108 if (eol != EOL_LF) | |
| 1109 { | |
| 1110 Lisp_Object chain = list2 (get_coding_system_for_text_file | |
| 1111 (codesys, 0), | |
| 1112 eol == EOL_CR ? Qconvert_eol_cr : | |
| 1113 Qconvert_eol_crlf); | |
| 1114 Lisp_Object canon = | |
| 1115 make_internal_coding_system | |
| 1116 (sub_codesys, "internal-subsidiary-eol-wrapper", | |
| 1117 Qchain, Qunbound, | |
| 1118 mlen != -1 ? | |
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1119 list6 (Qmnemonic, build_istring (codesys_mnemonic), |
| 771 | 1120 Qchain, chain, |
| 1121 Qcanonicalize_after_coding, sub_codesys) : | |
| 1122 list4 (Qchain, chain, | |
| 1123 Qcanonicalize_after_coding, sub_codesys)); | |
| 1124 XCODING_SYSTEM_CANONICAL (sub_codesys) = canon; | |
| 1125 } | |
| 1126 XCODING_SYSTEM_EOL_TYPE (sub_codesys) = eol; | |
| 1127 XCODING_SYSTEM_SUBSIDIARY_PARENT (sub_codesys) = codesys; | |
| 1128 XCODING_SYSTEM (codesys)->eol[eol] = sub_codesys; | |
| 428 | 1129 } |
| 1130 } | |
| 1131 | |
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1132 DEFUN ("coding-system-canonical-name-p", Fcoding_system_canonical_name_p, |
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1133 1, 1, 0, /* |
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1134 Return t if OBJECT names a coding system, and is not a coding system alias. |
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1135 */ |
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1136 (object)) |
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1137 { |
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1138 return CODING_SYSTEMP (Fgethash (object, Vcoding_system_hash_table, Qnil)) |
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1139 ? Qt : Qnil; |
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1140 } |
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1141 |
| 771 | 1142 /* Basic function to create new coding systems. For `make-coding-system', |
| 1143 NAME-OR-EXISTING is the NAME argument, PREFIX is null, and TYPE, | |
| 1144 DESCRIPTION, and PROPS are the same. All created coding systems are put | |
| 1145 in a hash table indexed by NAME. | |
| 1146 | |
| 1147 If PREFIX is a string, NAME-OR-EXISTING should specify an existing | |
| 1148 coding system (or nil), and an internal coding system will be created. | |
| 1149 The name of the coding system will be constructed by combining PREFIX | |
| 1150 with the name of the existing coding system (if given), and a number | |
| 1151 will be appended to insure uniqueness. In such a case, if Qunbound is | |
| 1152 given for DESCRIPTION, the description gets created based on the | |
| 1153 generated name. Also, if no mnemonic is given in the properties list, a | |
| 1154 mnemonic is created based on the generated name. | |
| 1155 | |
| 1156 For internal coding systems, the coding system is marked as internal | |
| 1157 (see `coding-system-list'), and no subsidiaries will be created or | |
| 1158 eol-wrapping will happen. Otherwise: | |
| 1159 | |
| 1160 -- if the eol-type property is `lf' or t, the coding system is merely | |
| 1161 created and returned. (For t, the coding system will be wrapped with | |
| 1162 an EOL autodetector when it's used to read a file.) | |
| 1163 | |
| 1164 -- if eol-type is `crlf' or `cr', after the coding system object is | |
| 1165 created, it will be wrapped in a chain with the appropriate | |
| 1166 convert-eol coding system (either `convert-eol-crlf' or | |
| 1167 `convert-eol-cr'), so that CRLF->LF or CR->LF conversion is done at | |
| 1168 decoding time, and the opposite at encoding time. The resulting | |
| 1169 chain becomes the CANONICAL field of the coding system object. | |
| 1170 | |
| 1171 -- if eol-type is nil or omitted, "subsidiaries" are generated: Three | |
| 1172 coding systems where the original coding system (before wrapping with | |
| 1173 convert-eol-autodetect) is either unwrapped or wrapped with | |
| 1174 convert-eol-crlf or convert-eol-cr, respectively, so that coding systems | |
| 1175 to handle LF, CRLF, and CR end-of-line indicators are created. (This | |
| 1176 crazy crap is based on existing behavior in other Mule versions, | |
| 1177 including FSF Emacs.) | |
| 1178 */ | |
| 428 | 1179 |
| 1180 static Lisp_Object | |
|
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1181 make_coding_system_1 (Lisp_Object name_or_existing, const Ascbyte *prefix, |
| 771 | 1182 Lisp_Object type, Lisp_Object description, |
| 1183 Lisp_Object props) | |
| 428 | 1184 { |
| 771 | 1185 Lisp_Coding_System *cs; |
| 1186 int need_to_setup_eol_systems = 1; | |
| 1187 enum eol_type eol_wrapper = EOL_AUTODETECT; | |
| 1188 struct coding_system_methods *meths; | |
| 1189 Lisp_Object csobj; | |
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1190 Lisp_Object defmnem = Qnil, aliases = Qnil; |
| 771 | 1191 |
| 1192 if (NILP (type)) | |
| 1193 type = Qundecided; | |
| 1194 meths = decode_coding_system_type (type, ERROR_ME); | |
| 1195 | |
| 1196 if (prefix) | |
| 428 | 1197 { |
| 867 | 1198 Ibyte *newname = |
| 771 | 1199 emacs_sprintf_malloc (NULL, "%s-%s-%d", |
| 1200 prefix, | |
| 867 | 1201 NILP (name_or_existing) ? (Ibyte *) "nil" : |
| 771 | 1202 XSTRING_DATA (Fsymbol_name (XCODING_SYSTEM_NAME |
| 1203 (name_or_existing))), | |
| 1204 ++coding_system_tick); | |
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1205 name_or_existing = intern_istring (newname); |
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1206 xfree (newname); |
| 771 | 1207 |
| 1208 if (UNBOUNDP (description)) | |
| 1209 { | |
| 1210 newname = | |
| 1211 emacs_sprintf_malloc | |
| 1212 (NULL, "For Internal Use (%s)", | |
| 1213 XSTRING_DATA (Fsymbol_name (name_or_existing))); | |
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1214 description = build_istring (newname); |
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1215 xfree (newname); |
| 771 | 1216 } |
| 1217 | |
| 1218 newname = emacs_sprintf_malloc (NULL, "Int%d", coding_system_tick); | |
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1219 defmnem = build_istring (newname); |
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1220 xfree (newname); |
| 428 | 1221 } |
| 771 | 1222 else |
| 1223 CHECK_SYMBOL (name_or_existing); | |
| 1224 | |
| 4303 | 1225 /* See is there an entry for name_or_existing in the defined coding system |
| 1226 hash table. */ | |
| 1227 csobj = find_coding_system (name_or_existing, 0); | |
| 1228 /* Error if it's there and not an autoload form. */ | |
| 1229 if (!NILP (csobj) && !CONSP (csobj)) | |
| 771 | 1230 invalid_operation ("Cannot redefine existing coding system", |
| 4303 | 1231 name_or_existing); |
| 771 | 1232 |
| 1233 cs = allocate_coding_system (meths, meths->extra_data_size, | |
| 1234 name_or_existing); | |
| 793 | 1235 csobj = wrap_coding_system (cs); |
| 771 | 1236 |
| 1237 cs->internal_p = !!prefix; | |
| 1238 | |
| 1239 if (NILP (description)) | |
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1240 description = build_ascstring (""); |
| 771 | 1241 else |
| 1242 CHECK_STRING (description); | |
| 1243 CODING_SYSTEM_DESCRIPTION (cs) = description; | |
| 1244 | |
| 1245 if (!NILP (defmnem)) | |
| 1246 CODING_SYSTEM_MNEMONIC (cs) = defmnem; | |
| 1247 | |
| 1248 { | |
| 1249 EXTERNAL_PROPERTY_LIST_LOOP_3 (key, value, props) | |
| 1250 { | |
| 1251 int recognized = 1; | |
| 1252 | |
| 1253 if (EQ (key, Qmnemonic)) | |
| 1254 { | |
| 1255 if (!NILP (value)) | |
| 1256 CHECK_STRING (value); | |
| 1257 CODING_SYSTEM_MNEMONIC (cs) = value; | |
| 1258 } | |
| 1259 | |
| 1260 else if (EQ (key, Qdocumentation)) | |
| 1261 { | |
| 1262 if (!NILP (value)) | |
| 1263 CHECK_STRING (value); | |
| 1264 CODING_SYSTEM_DOCUMENTATION (cs) = value; | |
| 1265 } | |
| 1266 | |
| 1267 else if (EQ (key, Qeol_type)) | |
| 1268 { | |
| 1269 need_to_setup_eol_systems = NILP (value); | |
| 1270 if (EQ (value, Qt)) | |
| 1271 value = Qnil; | |
| 1272 eol_wrapper = symbol_to_eol_type (value); | |
| 1273 } | |
| 1274 | |
| 1275 else if (EQ (key, Qpost_read_conversion)) | |
| 1276 CODING_SYSTEM_POST_READ_CONVERSION (cs) = value; | |
| 1277 else if (EQ (key, Qpre_write_conversion)) | |
| 1278 CODING_SYSTEM_PRE_WRITE_CONVERSION (cs) = value; | |
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1279 else if (EQ (key, Qaliases)) |
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1280 { |
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1281 EXTERNAL_LIST_LOOP_2 (alias, value) |
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1282 { |
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1283 CHECK_SYMBOL (alias); |
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1284 |
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1285 if (!NILP (Fcoding_system_canonical_name_p (alias))) |
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1286 { |
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1287 invalid_change ("Symbol is the canonical name of a " |
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1288 "coding system and cannot be redefined", |
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1289 alias); |
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1290 } |
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1291 } |
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1292 aliases = value; |
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1293 } |
| 771 | 1294 /* FSF compatibility */ |
| 1295 else if (EQ (key, Qtranslation_table_for_decode)) | |
| 1296 ; | |
| 1297 else if (EQ (key, Qtranslation_table_for_encode)) | |
| 1298 ; | |
| 1299 else if (EQ (key, Qsafe_chars)) | |
|
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1300 { |
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1301 CHECK_CHAR_TABLE (value); |
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1302 CODING_SYSTEM_SAFE_CHARS (cs) = value; |
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1303 } |
| 771 | 1304 else if (EQ (key, Qsafe_charsets)) |
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1305 { |
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1306 if (!EQ (Qt, value) |
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1307 /* Would be nice to actually do this check, but there are |
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1308 some order conflicts with japanese.el and |
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1309 mule-coding.el */ |
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1310 && 0) |
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1311 { |
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1312 #ifdef MULE |
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1313 EXTERNAL_LIST_LOOP_2 (safe_charset, value) |
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1314 CHECK_CHARSET (Ffind_charset (safe_charset)); |
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1315 #endif |
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1316 } |
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1317 |
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1318 CODING_SYSTEM_SAFE_CHARSETS (cs) = value; |
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1319 } |
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1320 else if (EQ (key, Qcategory)) |
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1321 { |
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1322 Fput (name_or_existing, intern ("coding-system-property"), |
|
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1323 Fplist_put (Fget (name_or_existing, |
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1324 intern ("coding-system-property"), |
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1325 Qnil), |
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1326 Qcategory, value)); |
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1327 } |
| 771 | 1328 else if (EQ (key, Qmime_charset)) |
| 1329 ; | |
| 1330 else if (EQ (key, Qvalid_codes)) | |
| 1331 ; | |
| 1332 else | |
| 1333 recognized = CODESYSMETH_OR_GIVEN (cs, putprop, | |
| 1334 (csobj, key, value), 0); | |
| 1335 | |
| 1336 if (!recognized) | |
| 1337 invalid_constant ("Unrecognized property", key); | |
| 1338 } | |
| 1339 } | |
| 1340 | |
| 1341 { | |
| 1342 XCODING_SYSTEM_CANONICAL (csobj) = | |
| 1343 CODESYSMETH_OR_GIVEN (cs, canonicalize, (csobj), Qnil); | |
| 1344 XCODING_SYSTEM_EOL_TYPE (csobj) = EOL_AUTODETECT; /* for copy-coding-system | |
| 1345 below */ | |
| 1346 | |
| 4303 | 1347 Fputhash (name_or_existing, csobj, Vcoding_system_hash_table); |
| 1348 | |
| 771 | 1349 if (need_to_setup_eol_systems && !cs->internal_p) |
| 1350 setup_eol_coding_systems (csobj); | |
| 1351 else if (eol_wrapper == EOL_CR || eol_wrapper == EOL_CRLF) | |
| 1352 { | |
| 1353 /* If a specific eol-type (other than LF) was specified, we handle | |
| 1354 this by converting the coding system into a chain that wraps the | |
| 1355 coding system along with a convert-eol system after it, in | |
| 1356 exactly that same switcheroo fashion that the normal | |
| 1357 canonicalize method works -- BUT we will run into a problem if | |
| 1358 we do it the obvious way, because when `chain' creates its | |
| 1359 substreams, the substream containing the coding system we're | |
| 1360 creating will have canonicalization expansion done on it, | |
| 1361 leading to infinite recursion. So we have to generate a new, | |
| 1362 internal coding system with the previous value of CANONICAL. */ | |
| 867 | 1363 Ibyte *newname = |
| 771 | 1364 emacs_sprintf_malloc |
| 1365 (NULL, "internal-eol-copy-%s-%d", | |
| 1366 XSTRING_DATA (Fsymbol_name (name_or_existing)), | |
| 1367 ++coding_system_tick); | |
|
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1368 Lisp_Object newnamesym = intern_istring (newname); |
| 771 | 1369 Lisp_Object copied = Fcopy_coding_system (csobj, newnamesym); |
|
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1370 xfree (newname); |
| 771 | 1371 |
| 1372 XCODING_SYSTEM_CANONICAL (csobj) = | |
| 1373 make_internal_coding_system | |
| 1374 (csobj, | |
| 1375 "internal-eol-wrapper", | |
| 1376 Qchain, Qunbound, | |
| 1377 list4 (Qchain, | |
| 1378 list2 (copied, | |
| 1379 eol_wrapper == EOL_CR ? | |
| 1380 Qconvert_eol_cr : | |
| 1381 Qconvert_eol_crlf), | |
| 1382 Qcanonicalize_after_coding, | |
| 1383 csobj)); | |
| 1384 } | |
| 1385 XCODING_SYSTEM_EOL_TYPE (csobj) = eol_wrapper; | |
|
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1386 |
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1387 { |
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1388 EXTERNAL_LIST_LOOP_2 (alias, aliases) |
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1389 Fdefine_coding_system_alias (alias, csobj); |
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1390 } |
| 771 | 1391 } |
| 1392 | |
| 1393 return csobj; | |
| 428 | 1394 } |
| 1395 | |
| 771 | 1396 Lisp_Object |
|
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1397 make_internal_coding_system (Lisp_Object existing, const Ascbyte *prefix, |
| 771 | 1398 Lisp_Object type, Lisp_Object description, |
| 1399 Lisp_Object props) | |
| 1400 { | |
| 1401 return make_coding_system_1 (existing, prefix, type, description, props); | |
| 1402 } | |
| 428 | 1403 |
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1404 DEFUN ("make-coding-system-internal", Fmake_coding_system_internal, 2, 4, 0, /* |
|
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1405 Create a new coding system object, and register NAME as its name. |
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1406 |
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1407 With Mule support, this does much of the work of `make-coding-system'. |
|
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1408 Without Mule support, it does all the work of that function, and an alias |
|
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1409 exists, mapping `make-coding-system' to `make-coding-system-internal'. |
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1410 |
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1411 You'll need a Mule XEmacs to read the complete docstring. Or you can |
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1412 just read it in make-coding-system.el; something like the following |
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1413 should work: |
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1414 |
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1415 \\[find-function-other-window] find-file RET \\[find-file] mule/make-coding-system.el RET |
| 771 | 1416 |
| 428 | 1417 */ |
| 771 | 1418 (name, type, description, props)) |
| 428 | 1419 { |
| 771 | 1420 return make_coding_system_1 (name, 0, type, description, props); |
| 428 | 1421 } |
| 1422 | |
| 1423 DEFUN ("copy-coding-system", Fcopy_coding_system, 2, 2, 0, /* | |
| 1424 Copy OLD-CODING-SYSTEM to NEW-NAME. | |
| 1425 If NEW-NAME does not name an existing coding system, a new one will | |
| 1426 be created. | |
| 771 | 1427 If you are using this function to create an alias, think again: |
| 1428 Use `define-coding-system-alias' instead. | |
| 428 | 1429 */ |
| 1430 (old_coding_system, new_name)) | |
| 1431 { | |
| 1432 Lisp_Object new_coding_system; | |
| 1433 old_coding_system = Fget_coding_system (old_coding_system); | |
| 771 | 1434 new_coding_system = |
| 4303 | 1435 UNBOUNDP (new_name) ? Qnil : find_coding_system (new_name, 0); |
| 428 | 1436 if (NILP (new_coding_system)) |
| 1437 { | |
| 793 | 1438 new_coding_system = |
| 1439 wrap_coding_system | |
| 1440 (allocate_coding_system | |
| 1441 (XCODING_SYSTEM (old_coding_system)->methods, | |
| 1442 XCODING_SYSTEM (old_coding_system)->methods->extra_data_size, | |
| 1443 new_name)); | |
| 771 | 1444 if (!UNBOUNDP (new_name)) |
| 1445 Fputhash (new_name, new_coding_system, Vcoding_system_hash_table); | |
| 428 | 1446 } |
| 771 | 1447 else if (XCODING_SYSTEM (old_coding_system)->methods != |
| 1448 XCODING_SYSTEM (new_coding_system)->methods) | |
| 1449 invalid_operation_2 ("Coding systems not same type", | |
| 1450 old_coding_system, new_coding_system); | |
| 428 | 1451 |
|
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1452 copy_lisp_object (new_coding_system, old_coding_system); |
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1453 XCODING_SYSTEM (new_coding_system)->name = new_name; |
| 428 | 1454 return new_coding_system; |
| 1455 } | |
| 1456 | |
| 2297 | 1457 /* #### Shouldn't this really be a find/get pair? */ |
| 1458 | |
| 440 | 1459 DEFUN ("coding-system-alias-p", Fcoding_system_alias_p, 1, 1, 0, /* |
| 1460 Return t if OBJECT is a coding system alias. | |
| 1461 All coding system aliases are created by `define-coding-system-alias'. | |
| 1462 */ | |
| 1463 (object)) | |
| 428 | 1464 { |
| 440 | 1465 return SYMBOLP (Fgethash (object, Vcoding_system_hash_table, Qzero)) |
| 1466 ? Qt : Qnil; | |
| 1467 } | |
| 1468 | |
| 1469 DEFUN ("coding-system-aliasee", Fcoding_system_aliasee, 1, 1, 0, /* | |
| 1470 Return the coding-system symbol for which symbol ALIAS is an alias. | |
| 1471 */ | |
| 1472 (alias)) | |
| 1473 { | |
| 1474 Lisp_Object aliasee = Fgethash (alias, Vcoding_system_hash_table, Qnil); | |
| 1475 if (SYMBOLP (aliasee)) | |
| 1476 return aliasee; | |
| 1477 else | |
| 563 | 1478 invalid_argument ("Symbol is not a coding system alias", alias); |
| 1204 | 1479 RETURN_NOT_REACHED (Qnil); |
| 440 | 1480 } |
| 1481 | |
| 1482 /* A maphash function, for removing dangling coding system aliases. */ | |
| 1483 static int | |
| 2286 | 1484 dangling_coding_system_alias_p (Lisp_Object UNUSED (alias), |
| 440 | 1485 Lisp_Object aliasee, |
| 1486 void *dangling_aliases) | |
| 1487 { | |
| 1488 if (SYMBOLP (aliasee) | |
| 1489 && NILP (Fgethash (aliasee, Vcoding_system_hash_table, Qnil))) | |
| 428 | 1490 { |
| 440 | 1491 (*(int *) dangling_aliases)++; |
| 1492 return 1; | |
| 428 | 1493 } |
| 440 | 1494 else |
| 1495 return 0; | |
| 1496 } | |
| 1497 | |
| 1498 DEFUN ("define-coding-system-alias", Fdefine_coding_system_alias, 2, 2, 0, /* | |
| 1499 Define symbol ALIAS as an alias for coding system ALIASEE. | |
| 1500 | |
| 1501 You can use this function to redefine an alias that has already been defined, | |
| 1502 but you cannot redefine a name which is the canonical name for a coding system. | |
| 1503 \(a canonical name of a coding system is what is returned when you call | |
| 1504 `coding-system-name' on a coding system). | |
| 1505 | |
| 1506 ALIASEE itself can be an alias, which allows you to define nested aliases. | |
| 1507 | |
| 1508 You are forbidden, however, from creating alias loops or `dangling' aliases. | |
| 1509 These will be detected, and an error will be signaled if you attempt to do so. | |
| 1510 | |
| 1511 If ALIASEE is nil, then ALIAS will simply be undefined. | |
| 1512 | |
| 1513 See also `coding-system-alias-p', `coding-system-aliasee', | |
| 1514 and `coding-system-canonical-name-p'. | |
| 1515 */ | |
| 1516 (alias, aliasee)) | |
| 1517 { | |
| 2286 | 1518 Lisp_Object probe; |
| 440 | 1519 |
| 1520 CHECK_SYMBOL (alias); | |
| 1521 | |
| 1522 if (!NILP (Fcoding_system_canonical_name_p (alias))) | |
| 563 | 1523 invalid_change |
| 440 | 1524 ("Symbol is the canonical name of a coding system and cannot be redefined", |
| 1525 alias); | |
| 1526 | |
| 1527 if (NILP (aliasee)) | |
| 1528 { | |
| 771 | 1529 Lisp_Object subsidiary_unix = add_suffix_to_symbol (alias, "-unix"); |
| 1530 Lisp_Object subsidiary_dos = add_suffix_to_symbol (alias, "-dos"); | |
| 1531 Lisp_Object subsidiary_mac = add_suffix_to_symbol (alias, "-mac"); | |
| 440 | 1532 |
| 1533 Fremhash (alias, Vcoding_system_hash_table); | |
| 1534 | |
| 1535 /* Undefine subsidiary aliases, | |
| 1536 presumably created by a previous call to this function */ | |
| 1537 if (! NILP (Fcoding_system_alias_p (subsidiary_unix)) && | |
| 1538 ! NILP (Fcoding_system_alias_p (subsidiary_dos)) && | |
| 1539 ! NILP (Fcoding_system_alias_p (subsidiary_mac))) | |
| 1540 { | |
| 1541 Fdefine_coding_system_alias (subsidiary_unix, Qnil); | |
| 1542 Fdefine_coding_system_alias (subsidiary_dos, Qnil); | |
| 1543 Fdefine_coding_system_alias (subsidiary_mac, Qnil); | |
| 1544 } | |
| 1545 | |
| 1546 /* Undefine dangling coding system aliases. */ | |
| 1547 { | |
| 1548 int dangling_aliases; | |
| 1549 | |
| 1550 do { | |
| 1551 dangling_aliases = 0; | |
| 1552 elisp_map_remhash (dangling_coding_system_alias_p, | |
| 1553 Vcoding_system_hash_table, | |
| 1554 &dangling_aliases); | |
| 1555 } while (dangling_aliases > 0); | |
| 1556 } | |
| 1557 | |
| 1558 return Qnil; | |
| 1559 } | |
| 1560 | |
| 1561 if (CODING_SYSTEMP (aliasee)) | |
| 1562 aliasee = XCODING_SYSTEM_NAME (aliasee); | |
| 1563 | |
| 1564 /* Checks that aliasee names a coding-system */ | |
| 2286 | 1565 (void) Fget_coding_system (aliasee); |
| 440 | 1566 |
| 1567 /* Check for coding system alias loops */ | |
| 1568 if (EQ (alias, aliasee)) | |
| 563 | 1569 alias_loop: invalid_operation_2 |
| 440 | 1570 ("Attempt to create a coding system alias loop", alias, aliasee); |
| 1571 | |
| 1572 for (probe = aliasee; | |
| 1573 SYMBOLP (probe); | |
| 1574 probe = Fgethash (probe, Vcoding_system_hash_table, Qzero)) | |
| 1575 { | |
| 1576 if (EQ (probe, alias)) | |
| 1577 goto alias_loop; | |
| 1578 } | |
| 1579 | |
| 1580 Fputhash (alias, aliasee, Vcoding_system_hash_table); | |
| 1581 | |
| 1582 /* Set up aliases for subsidiaries. | |
| 2297 | 1583 #### There must be a better way to handle subsidiary coding systems. |
| 1584 Inquiring Minds Want To Know: shouldn't they always be chains? */ | |
| 440 | 1585 { |
| 1586 static const char *suffixes[] = { "-unix", "-dos", "-mac" }; | |
| 1587 int i; | |
| 1588 for (i = 0; i < countof (suffixes); i++) | |
| 1589 { | |
| 1590 Lisp_Object alias_subsidiary = | |
| 771 | 1591 add_suffix_to_symbol (alias, suffixes[i]); |
| 440 | 1592 Lisp_Object aliasee_subsidiary = |
| 771 | 1593 add_suffix_to_symbol (aliasee, suffixes[i]); |
| 440 | 1594 |
| 1595 if (! NILP (Ffind_coding_system (aliasee_subsidiary))) | |
| 1596 Fdefine_coding_system_alias (alias_subsidiary, aliasee_subsidiary); | |
| 1597 } | |
| 1598 } | |
| 428 | 1599 /* FSF return value is a vector of [ALIAS-unix ALIAS-dos ALIAS-mac], |
| 1600 but it doesn't look intentional, so I'd rather return something | |
| 1601 meaningful or nothing at all. */ | |
| 1602 return Qnil; | |
| 1603 } | |
| 1604 | |
| 1605 static Lisp_Object | |
| 771 | 1606 subsidiary_coding_system (Lisp_Object coding_system, enum eol_type type) |
| 428 | 1607 { |
| 1608 Lisp_Coding_System *cs = XCODING_SYSTEM (coding_system); | |
| 1609 Lisp_Object new_coding_system; | |
| 1610 | |
| 1611 switch (type) | |
| 1612 { | |
| 1613 case EOL_AUTODETECT: return coding_system; | |
| 1614 case EOL_LF: new_coding_system = CODING_SYSTEM_EOL_LF (cs); break; | |
| 1615 case EOL_CR: new_coding_system = CODING_SYSTEM_EOL_CR (cs); break; | |
| 1616 case EOL_CRLF: new_coding_system = CODING_SYSTEM_EOL_CRLF (cs); break; | |
| 2500 | 1617 default: ABORT (); return Qnil; |
| 428 | 1618 } |
| 1619 | |
| 1620 return NILP (new_coding_system) ? coding_system : new_coding_system; | |
| 1621 } | |
| 1622 | |
| 1623 DEFUN ("subsidiary-coding-system", Fsubsidiary_coding_system, 2, 2, 0, /* | |
| 1624 Return the subsidiary coding system of CODING-SYSTEM with eol type EOL-TYPE. | |
| 771 | 1625 The logically opposite operation is `coding-system-base'. |
| 428 | 1626 */ |
| 1627 (coding_system, eol_type)) | |
| 1628 { | |
| 771 | 1629 coding_system = get_coding_system_for_text_file (coding_system, 0); |
| 428 | 1630 |
| 1631 return subsidiary_coding_system (coding_system, | |
| 1632 symbol_to_eol_type (eol_type)); | |
| 1633 } | |
| 1634 | |
| 771 | 1635 DEFUN ("coding-system-base", Fcoding_system_base, |
| 1636 1, 1, 0, /* | |
| 1637 Return the base coding system of CODING-SYSTEM. | |
| 1638 If CODING-SYSTEM is a subsidiary, this returns its parent; otherwise, it | |
| 1639 returns CODING-SYSTEM. | |
| 1640 The logically opposite operation is `subsidiary-coding-system'. | |
| 1641 */ | |
| 1642 (coding_system)) | |
| 1643 { | |
| 1644 Lisp_Object base; | |
| 1645 | |
| 1646 coding_system = Fget_coding_system (coding_system); | |
| 1647 if (EQ (XCODING_SYSTEM_NAME (coding_system), Qbinary)) | |
| 1648 return Fget_coding_system (Qraw_text); /* hack! */ | |
| 1649 base = XCODING_SYSTEM_SUBSIDIARY_PARENT (coding_system); | |
| 1650 if (!NILP (base)) | |
| 1651 return base; | |
| 1652 return coding_system; | |
| 1653 } | |
| 1654 | |
| 1655 DEFUN ("coding-system-used-for-io", Fcoding_system_used_for_io, | |
| 1656 1, 1, 0, /* | |
| 1657 Return the coding system actually used for I/O. | |
| 1658 In some cases (e.g. when a particular EOL type is specified) this won't be | |
| 2297 | 1659 the coding system itself. This can be useful when trying to determine |
| 1660 precisely how data was decoded. | |
| 771 | 1661 */ |
| 1662 (coding_system)) | |
| 1663 { | |
| 1664 Lisp_Object canon; | |
| 1665 | |
| 1666 coding_system = Fget_coding_system (coding_system); | |
| 1667 canon = XCODING_SYSTEM_CANONICAL (coding_system); | |
| 1668 if (!NILP (canon)) | |
| 1669 return canon; | |
| 1670 return coding_system; | |
| 1671 } | |
| 1672 | |
| 428 | 1673 |
| 1674 /************************************************************************/ | |
| 1675 /* Coding system accessors */ | |
| 1676 /************************************************************************/ | |
| 1677 | |
| 771 | 1678 DEFUN ("coding-system-description", Fcoding_system_description, 1, 1, 0, /* |
| 1679 Return the description for CODING-SYSTEM. | |
| 1680 The `description' of a coding system is a short English phrase giving the | |
| 1681 name rendered according to English punctuation rules, plus possibly some | |
| 1682 explanatory text (typically in the form of a parenthetical phrase). The | |
| 1683 description is intended to be short enough that it can appear as a menu item, | |
| 1684 and clear enough to be recognizable even to someone who is assumed to have | |
| 1685 some basic familiarity with different encodings but may not know all the | |
| 1686 technical names; thus, for `cn-gb-2312' is described as "Chinese EUC" and | |
| 1687 `hz-gb-2312' is described as "Hz/ZW (Chinese)", where the actual name of | |
| 1688 the encoding is given, followed by a note that this is a Chinese encoding, | |
| 1689 because the great majority of people encountering this would have no idea | |
| 1690 what it is, and giving the language indicates whether the encoding should | |
| 1691 just be ignored or (conceivably) investigated more thoroughly. | |
| 428 | 1692 */ |
| 1693 (coding_system)) | |
| 1694 { | |
| 1695 coding_system = Fget_coding_system (coding_system); | |
| 771 | 1696 return XCODING_SYSTEM_DESCRIPTION (coding_system); |
| 428 | 1697 } |
| 1698 | |
| 1699 DEFUN ("coding-system-type", Fcoding_system_type, 1, 1, 0, /* | |
| 1700 Return the type of CODING-SYSTEM. | |
| 1701 */ | |
| 1702 (coding_system)) | |
| 1703 { | |
| 771 | 1704 coding_system = Fget_coding_system (coding_system); |
| 1705 return XCODING_SYSTEM_TYPE (coding_system); | |
| 428 | 1706 } |
| 1707 | |
| 1708 DEFUN ("coding-system-property", Fcoding_system_property, 2, 2, 0, /* | |
| 1709 Return the PROP property of CODING-SYSTEM. | |
| 1710 */ | |
| 1711 (coding_system, prop)) | |
| 1712 { | |
| 1713 coding_system = Fget_coding_system (coding_system); | |
| 1714 CHECK_SYMBOL (prop); | |
| 1715 | |
| 1716 if (EQ (prop, Qname)) | |
| 1717 return XCODING_SYSTEM_NAME (coding_system); | |
| 1718 else if (EQ (prop, Qtype)) | |
| 1719 return Fcoding_system_type (coding_system); | |
| 771 | 1720 else if (EQ (prop, Qdescription)) |
| 1721 return XCODING_SYSTEM_DESCRIPTION (coding_system); | |
| 428 | 1722 else if (EQ (prop, Qmnemonic)) |
| 1723 return XCODING_SYSTEM_MNEMONIC (coding_system); | |
| 771 | 1724 else if (EQ (prop, Qdocumentation)) |
| 1725 return XCODING_SYSTEM_DOCUMENTATION (coding_system); | |
| 428 | 1726 else if (EQ (prop, Qeol_type)) |
| 771 | 1727 return eol_type_to_symbol (XCODING_SYSTEM_EOL_TYPE |
| 1728 (coding_system)); | |
| 428 | 1729 else if (EQ (prop, Qeol_lf)) |
| 1730 return XCODING_SYSTEM_EOL_LF (coding_system); | |
| 1731 else if (EQ (prop, Qeol_crlf)) | |
| 1732 return XCODING_SYSTEM_EOL_CRLF (coding_system); | |
| 1733 else if (EQ (prop, Qeol_cr)) | |
| 1734 return XCODING_SYSTEM_EOL_CR (coding_system); | |
| 1735 else if (EQ (prop, Qpost_read_conversion)) | |
| 1736 return XCODING_SYSTEM_POST_READ_CONVERSION (coding_system); | |
| 1737 else if (EQ (prop, Qpre_write_conversion)) | |
| 1738 return XCODING_SYSTEM_PRE_WRITE_CONVERSION (coding_system); | |
|
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Aidan Kehoe <kehoea@parhasard.net>
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changeset
|
1739 else if (EQ (prop, Qsafe_charsets)) |
|
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Add #'query-coding-region tests; do the work necessary to get them running.
Aidan Kehoe <kehoea@parhasard.net>
parents:
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diff
changeset
|
1740 return XCODING_SYSTEM_SAFE_CHARSETS (coding_system); |
|
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Add #'query-coding-region tests; do the work necessary to get them running.
Aidan Kehoe <kehoea@parhasard.net>
parents:
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diff
changeset
|
1741 else if (EQ (prop, Qsafe_chars)) |
|
1d74a1d115ee
Add #'query-coding-region tests; do the work necessary to get them running.
Aidan Kehoe <kehoea@parhasard.net>
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diff
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|
1742 return XCODING_SYSTEM_SAFE_CHARS (coding_system); |
| 771 | 1743 else |
| 1744 { | |
| 1745 Lisp_Object value = CODESYSMETH_OR_GIVEN (XCODING_SYSTEM (coding_system), | |
| 1746 getprop, | |
| 1747 (coding_system, prop), | |
| 1748 Qunbound); | |
| 1749 if (UNBOUNDP (value)) | |
| 1750 invalid_constant ("Unrecognized property", prop); | |
| 1751 return value; | |
| 1752 } | |
| 1753 } | |
| 1754 | |
| 1755 | |
| 1756 /************************************************************************/ | |
| 1757 /* Coding stream functions */ | |
| 1758 /************************************************************************/ | |
| 1759 | |
| 1760 /* A coding stream is a stream used for encoding or decoding text. The | |
| 1761 coding-stream object keeps track of the actual coding system, the stream | |
| 1762 that is at the other end, and data that needs to be persistent across | |
| 1763 the lifetime of the stream. */ | |
| 1764 | |
| 1204 | 1765 extern const struct sized_memory_description chain_coding_stream_description; |
| 1766 extern const struct sized_memory_description undecided_coding_stream_description; | |
| 1767 | |
| 1768 static const struct memory_description coding_stream_data_description_1 []= { | |
| 2551 | 1769 { XD_BLOCK_PTR, chain_coding_system, 1, |
| 1770 { &chain_coding_stream_description } }, | |
| 1771 { XD_BLOCK_PTR, undecided_coding_system, 1, | |
| 1772 { &undecided_coding_stream_description } }, | |
| 1204 | 1773 { XD_END } |
| 1774 }; | |
| 1775 | |
| 1776 static const struct sized_memory_description coding_stream_data_description = { | |
| 1777 sizeof (void *), coding_stream_data_description_1 | |
| 1778 }; | |
| 1779 | |
| 1780 static const struct memory_description coding_lstream_description[] = { | |
| 1781 { XD_INT, offsetof (struct coding_stream, type) }, | |
| 1782 { XD_LISP_OBJECT, offsetof (struct coding_stream, orig_codesys) }, | |
| 1783 { XD_LISP_OBJECT, offsetof (struct coding_stream, codesys) }, | |
| 1784 { XD_LISP_OBJECT, offsetof (struct coding_stream, other_end) }, | |
| 1785 { XD_UNION, offsetof (struct coding_stream, data), | |
| 2551 | 1786 XD_INDIRECT (0, 0), { &coding_stream_data_description } }, |
| 1204 | 1787 { XD_END } |
| 1788 }; | |
| 1789 | |
| 1790 DEFINE_LSTREAM_IMPLEMENTATION_WITH_DATA ("coding", coding); | |
| 771 | 1791 |
| 1792 /* Encoding and decoding are parallel operations, so we create just one | |
| 1793 stream for both. "Decoding" may involve the extra step of autodetection | |
| 1794 of the data format, but that's only because of the conventional | |
| 1795 definition of decoding as converting from external- to | |
| 1796 internal-formatted data. | |
| 1797 | |
| 2297 | 1798 [[ REWRITE ME! ]] |
| 1799 | |
| 771 | 1800 #### We really need to abstract out the concept of "data formats" and |
| 1801 define "converters" that convert from and to specified formats, | |
| 1802 eliminating the idea of decoding and encoding. When specifying a | |
| 1803 conversion process, we need to give the data formats themselves, not the | |
| 1804 conversion processes -- e.g. a coding system called "Unicode->multibyte" | |
| 1805 converts in both directions, and we could auto-detect the format of data | |
| 1806 at either end. */ | |
| 1807 | |
| 1808 static Bytecount | |
| 1809 coding_reader (Lstream *stream, unsigned char *data, Bytecount size) | |
| 1810 { | |
| 1811 unsigned char *orig_data = data; | |
| 1812 Bytecount read_size; | |
| 1813 int error_occurred = 0; | |
| 1814 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 1815 | |
| 1816 /* We need to interface to coding_{de,en}code_1(), which expects to take | |
| 1817 some amount of data and store the result into a Dynarr. We have | |
| 1818 coding_{de,en}code_1() store into c->runoff, and take data from there | |
| 1819 as necessary. */ | |
| 1820 | |
| 1821 /* We loop until we have enough data, reading chunks from the other | |
| 1822 end and converting it. */ | |
| 1823 while (1) | |
| 1824 { | |
| 1825 /* Take data from convert_to if we can. Make sure to take at | |
| 1826 most SIZE bytes, and delete the data from convert_to. */ | |
| 1827 if (Dynarr_length (str->convert_to) > 0) | |
| 1828 { | |
| 1829 Bytecount chunk = | |
| 1830 min (size, (Bytecount) Dynarr_length (str->convert_to)); | |
| 4967 | 1831 memcpy (data, Dynarr_begin (str->convert_to), chunk); |
| 771 | 1832 Dynarr_delete_many (str->convert_to, 0, chunk); |
| 1833 data += chunk; | |
| 1834 size -= chunk; | |
| 1835 } | |
| 1836 | |
| 1837 if (size == 0) | |
| 1838 break; /* No more room for data */ | |
| 1839 | |
| 1840 if (str->eof) | |
| 1841 break; | |
| 1842 | |
| 1843 { | |
| 1844 /* Exhausted convert_to, so get some more. Read into convert_from, | |
| 1845 after existing "rejected" data from the last conversion. */ | |
| 1846 Bytecount rejected = Dynarr_length (str->convert_from); | |
| 1847 /* #### 1024 is arbitrary; we really need to separate 0 from EOF, | |
| 1848 and when we get 0, keep taking more data until we don't get 0 -- | |
| 1849 we don't know how much data the conversion routine might need | |
| 2297 | 1850 before it can generate any data of its own (eg, bzip2). */ |
| 814 | 1851 Bytecount readmore = |
| 1852 str->one_byte_at_a_time ? (Bytecount) 1 : | |
| 1853 max (size, (Bytecount) 1024); | |
| 771 | 1854 |
| 1855 Dynarr_add_many (str->convert_from, 0, readmore); | |
| 1856 read_size = Lstream_read (str->other_end, | |
| 1857 Dynarr_atp (str->convert_from, rejected), | |
| 1858 readmore); | |
| 1859 /* Trim size down to how much we actually got */ | |
| 5038 | 1860 Dynarr_set_lengthr (str->convert_from, rejected + max (0, read_size)); |
| 771 | 1861 } |
| 1862 | |
| 1863 if (read_size < 0) /* LSTREAM_ERROR */ | |
| 1864 { | |
| 1865 error_occurred = 1; | |
| 1866 break; | |
| 1867 } | |
| 1868 if (read_size == 0) /* LSTREAM_EOF */ | |
| 1869 /* There might be some more end data produced in the translation, | |
| 1870 so we set a flag and call the conversion method once more to | |
| 1871 output any final stuff it may be holding, any "go back to a sane | |
| 1872 state" escape sequences, etc. The conversion method is free to | |
| 1873 look at this flag, and we use it above to stop looping. */ | |
| 1874 str->eof = 1; | |
| 1875 { | |
| 1876 Bytecount processed; | |
| 1877 Bytecount to_process = Dynarr_length (str->convert_from); | |
| 1878 | |
| 1879 /* Convert the data, and save any rejected data in convert_from */ | |
| 1880 processed = | |
| 1881 XCODESYSMETH (str->codesys, convert, | |
| 4967 | 1882 (str, Dynarr_begin (str->convert_from), |
| 771 | 1883 str->convert_to, to_process)); |
| 1884 if (processed < 0) | |
| 1885 { | |
| 1886 error_occurred = 1; | |
| 1887 break; | |
| 1888 } | |
| 1889 assert (processed <= to_process); | |
| 1890 if (processed < to_process) | |
| 4967 | 1891 memmove (Dynarr_begin (str->convert_from), |
| 771 | 1892 Dynarr_atp (str->convert_from, processed), |
| 1893 to_process - processed); | |
| 5038 | 1894 Dynarr_set_lengthr (str->convert_from, to_process - processed); |
| 771 | 1895 } |
| 1896 } | |
| 1897 | |
| 1898 if (data - orig_data == 0) | |
| 1899 return error_occurred ? -1 : 0; | |
| 1900 else | |
| 1901 return data - orig_data; | |
| 1902 } | |
| 1903 | |
| 1904 static Bytecount | |
| 1905 coding_writer (Lstream *stream, const unsigned char *data, Bytecount size) | |
| 1906 { | |
| 1907 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 1908 | |
| 1909 /* Convert all our data into convert_to, and then attempt to write | |
| 1910 it all out to the other end. */ | |
| 1911 Dynarr_reset (str->convert_to); | |
| 1912 size = XCODESYSMETH (str->codesys, convert, | |
| 1913 (str, data, str->convert_to, size)); | |
| 4967 | 1914 if (Lstream_write (str->other_end, Dynarr_begin (str->convert_to), |
| 771 | 1915 Dynarr_length (str->convert_to)) < 0) |
| 1916 return -1; | |
| 1917 else | |
| 1918 /* The return value indicates how much of the incoming data was | |
| 1919 processed, not how many bytes were written. */ | |
| 1920 return size; | |
| 1921 } | |
| 1922 | |
| 1923 static int | |
| 1924 encode_decode_source_sink_type_is_char (Lisp_Object cs, | |
| 1925 enum source_or_sink sex, | |
| 1926 enum encode_decode direction) | |
| 1927 { | |
| 1928 return (direction == CODING_DECODE ? | |
| 1929 decoding_source_sink_type_is_char (cs, sex) : | |
| 1930 encoding_source_sink_type_is_char (cs, sex)); | |
| 1931 } | |
| 1932 | |
| 1933 /* Ensure that the convert methods only get full characters sent to them to | |
| 1934 convert if the source of that conversion is characters; and that no such | |
| 1935 full-character checking happens when the source is bytes. Keep in mind | |
| 1936 that (1) the conversion_end_type return values take the perspective of | |
| 1937 encoding; (2) the source for decoding is the same as the sink for | |
| 1938 encoding; (3) when writing, the data is given to us, and we set our own | |
| 1939 stream to be character mode or not; (4) when reading, the data comes | |
| 1940 from the other_end stream, and we set that one to be character mode or | |
| 1941 not. This is consistent with the comment above the prototype for | |
| 1942 Lstream_set_character_mode(), which lays out rules for who is allowed to | |
| 1943 modify the character type mode on a stream. | |
| 1944 | |
| 814 | 1945 If we're a read stream, we're always setting character mode on the |
| 1946 source, but we also set it on ourselves consistent with the flag that | |
| 1947 can disable this (see again the comment above | |
| 1948 Lstream_set_character_mode()). | |
| 1949 */ | |
| 771 | 1950 |
| 1951 static void | |
| 1952 set_coding_character_mode (Lstream *stream) | |
| 1953 { | |
| 1954 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 1955 Lstream *stream_to_set = | |
| 1956 stream->flags & LSTREAM_FL_WRITE ? stream : str->other_end; | |
| 1957 if (encode_decode_source_sink_type_is_char | |
| 1958 (str->codesys, CODING_SOURCE, str->direction)) | |
| 1959 Lstream_set_character_mode (stream_to_set); | |
| 1960 else | |
| 1961 Lstream_unset_character_mode (stream_to_set); | |
| 814 | 1962 if (str->set_char_mode_on_us_when_reading && |
| 1963 (stream->flags & LSTREAM_FL_READ)) | |
| 1964 { | |
| 1965 if (encode_decode_source_sink_type_is_char | |
| 1966 (str->codesys, CODING_SINK, str->direction)) | |
| 1967 Lstream_set_character_mode (stream); | |
| 1968 else | |
| 1969 Lstream_unset_character_mode (stream); | |
| 1970 } | |
| 771 | 1971 } |
| 1972 | |
| 1973 static Lisp_Object | |
| 1974 coding_marker (Lisp_Object stream) | |
| 1975 { | |
| 1976 struct coding_stream *str = CODING_STREAM_DATA (XLSTREAM (stream)); | |
| 1977 | |
| 1978 mark_object (str->orig_codesys); | |
| 1979 mark_object (str->codesys); | |
| 1980 MAYBE_XCODESYSMETH (str->codesys, mark_coding_stream, (str)); | |
| 1981 return wrap_lstream (str->other_end); | |
| 1982 } | |
| 1983 | |
| 1984 static int | |
| 1985 coding_rewinder (Lstream *stream) | |
| 1986 { | |
| 1987 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 1988 MAYBE_XCODESYSMETH (str->codesys, rewind_coding_stream, (str)); | |
| 1989 | |
| 1990 str->ch = 0; | |
| 1991 Dynarr_reset (str->convert_to); | |
| 1992 Dynarr_reset (str->convert_from); | |
| 1993 return Lstream_rewind (str->other_end); | |
| 1994 } | |
| 1995 | |
| 1996 static int | |
| 1997 coding_seekable_p (Lstream *stream) | |
| 1998 { | |
| 1999 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 2000 return Lstream_seekable_p (str->other_end); | |
| 2001 } | |
| 2002 | |
| 2003 static int | |
| 2004 coding_flusher (Lstream *stream) | |
| 2005 { | |
| 2006 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 2007 return Lstream_flush (str->other_end); | |
| 2008 } | |
| 2009 | |
| 2010 static int | |
| 2011 coding_closer (Lstream *stream) | |
| 2012 { | |
| 2013 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 2014 if (stream->flags & LSTREAM_FL_WRITE) | |
| 2015 { | |
| 2016 str->eof = 1; | |
| 2017 coding_writer (stream, 0, 0); | |
| 2018 str->eof = 0; | |
| 2019 } | |
| 2020 /* It's safe to free the runoff dynarrs now because they are used only | |
| 2021 during conversion. We need to keep the type-specific data around, | |
| 2022 though, because of canonicalize_after_coding. */ | |
| 2023 if (str->convert_to) | |
| 2024 { | |
| 2025 Dynarr_free (str->convert_to); | |
| 2026 str->convert_to = 0; | |
| 2027 } | |
| 2028 if (str->convert_from) | |
| 428 | 2029 { |
| 771 | 2030 Dynarr_free (str->convert_from); |
| 2031 str->convert_from = 0; | |
| 2032 } | |
| 2033 | |
| 800 | 2034 if (str->no_close_other) |
| 2035 return Lstream_flush (str->other_end); | |
| 2036 else | |
| 2037 return Lstream_close (str->other_end); | |
| 771 | 2038 } |
| 2039 | |
| 2040 static void | |
| 2041 coding_finalizer (Lstream *stream) | |
| 2042 { | |
| 2043 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 2044 | |
| 2045 assert (!str->finalized); | |
| 2046 MAYBE_XCODESYSMETH (str->codesys, finalize_coding_stream, (str)); | |
| 2047 if (str->data) | |
| 2048 { | |
|
4976
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Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2049 xfree (str->data); |
| 771 | 2050 str->data = 0; |
| 2051 } | |
| 2052 str->finalized = 1; | |
| 2053 } | |
| 2054 | |
| 2055 static Lisp_Object | |
| 2056 coding_stream_canonicalize_after_coding (Lstream *stream) | |
| 2057 { | |
| 2058 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 2059 | |
| 2060 return XCODESYSMETH_OR_GIVEN (str->codesys, canonicalize_after_coding, | |
| 2061 (str), str->codesys); | |
| 2062 } | |
| 2063 | |
| 2064 Lisp_Object | |
| 2065 coding_stream_detected_coding_system (Lstream *stream) | |
| 2066 { | |
| 2067 Lisp_Object codesys = | |
| 2068 coding_stream_canonicalize_after_coding (stream); | |
| 2069 if (NILP (codesys)) | |
| 2070 return Fget_coding_system (Qidentity); | |
| 2071 return codesys; | |
| 2072 } | |
| 2073 | |
| 2074 Lisp_Object | |
| 2075 coding_stream_coding_system (Lstream *stream) | |
| 2076 { | |
| 2077 return CODING_STREAM_DATA (stream)->codesys; | |
| 2078 } | |
| 2079 | |
| 2080 /* Change the coding system associated with a stream. */ | |
| 2081 | |
| 2082 void | |
| 2083 set_coding_stream_coding_system (Lstream *lstr, Lisp_Object codesys) | |
| 2084 { | |
| 2085 struct coding_stream *str = CODING_STREAM_DATA (lstr); | |
| 2086 if (EQ (str->orig_codesys, codesys)) | |
| 2087 return; | |
| 2088 /* We do the equivalent of closing the stream, destroying it, and | |
| 2089 reinitializing it. This includes flushing out the data and signalling | |
| 2090 EOF, if we're a writing stream; we also replace the type-specific data | |
| 2091 with the data appropriate for the new coding system. */ | |
| 2092 if (!NILP (str->codesys)) | |
| 2093 { | |
| 2094 if (lstr->flags & LSTREAM_FL_WRITE) | |
| 2095 { | |
| 2096 Lstream_flush (lstr); | |
| 2097 str->eof = 1; | |
| 2098 coding_writer (lstr, 0, 0); | |
| 2099 str->eof = 0; | |
| 2100 } | |
| 2101 MAYBE_XCODESYSMETH (str->codesys, finalize_coding_stream, (str)); | |
| 2102 } | |
| 2103 str->orig_codesys = codesys; | |
| 2104 str->codesys = coding_system_real_canonical (codesys); | |
| 2105 | |
| 2106 if (str->data) | |
| 2107 { | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2108 xfree (str->data); |
| 771 | 2109 str->data = 0; |
| 428 | 2110 } |
| 771 | 2111 if (XCODING_SYSTEM_METHODS (str->codesys)->coding_data_size) |
| 1204 | 2112 { |
| 2113 str->data = | |
| 2114 xmalloc_and_zero (XCODING_SYSTEM_METHODS (str->codesys)-> | |
| 2115 coding_data_size); | |
| 2116 str->type = XCODING_SYSTEM_METHODS (str->codesys)->enumtype; | |
| 2117 } | |
| 771 | 2118 MAYBE_XCODESYSMETH (str->codesys, init_coding_stream, (str)); |
| 2119 /* The new coding system may have different ideas regarding whether its | |
| 2120 ends are characters or bytes. */ | |
| 2121 set_coding_character_mode (lstr); | |
| 2122 } | |
| 2123 | |
| 2124 /* WARNING WARNING WARNING WARNING!!!!! If you open up a coding | |
| 2125 stream for writing, no automatic code detection will be performed. | |
| 2126 The reason for this is that automatic code detection requires a | |
| 2127 seekable input. Things will also fail if you open a coding | |
| 2128 stream for reading using a non-fully-specified coding system and | |
| 2129 a non-seekable input stream. */ | |
| 2130 | |
| 2131 static Lisp_Object | |
| 2132 make_coding_stream_1 (Lstream *stream, Lisp_Object codesys, | |
| 800 | 2133 const char *mode, enum encode_decode direction, |
| 802 | 2134 int flags) |
| 771 | 2135 { |
| 2136 Lstream *lstr = Lstream_new (lstream_coding, mode); | |
| 2137 struct coding_stream *str = CODING_STREAM_DATA (lstr); | |
| 2138 | |
| 2139 codesys = Fget_coding_system (codesys); | |
| 2140 xzero (*str); | |
| 2141 str->codesys = Qnil; | |
| 2142 str->orig_codesys = Qnil; | |
| 2143 str->us = lstr; | |
| 2144 str->other_end = stream; | |
| 2145 str->convert_to = Dynarr_new (unsigned_char); | |
| 2146 str->convert_from = Dynarr_new (unsigned_char); | |
| 2147 str->direction = direction; | |
| 814 | 2148 if (flags & LSTREAM_FL_NO_CLOSE_OTHER) |
| 802 | 2149 str->no_close_other = 1; |
| 814 | 2150 if (flags & LSTREAM_FL_READ_ONE_BYTE_AT_A_TIME) |
| 802 | 2151 str->one_byte_at_a_time = 1; |
| 814 | 2152 if (!(flags & LSTREAM_FL_NO_INIT_CHAR_MODE_WHEN_READING)) |
| 2153 str->set_char_mode_on_us_when_reading = 1; | |
| 802 | 2154 |
| 771 | 2155 set_coding_stream_coding_system (lstr, codesys); |
| 793 | 2156 return wrap_lstream (lstr); |
| 771 | 2157 } |
| 2158 | |
| 814 | 2159 /* FLAGS: |
| 2160 | |
| 2161 LSTREAM_FL_NO_CLOSE_OTHER | |
| 2162 Don't close STREAM (the stream at the other end) when this stream is | |
| 2163 closed. | |
| 2164 | |
| 2165 LSTREAM_FL_READ_ONE_BYTE_AT_A_TIME | |
| 2166 When reading from STREAM, read and process one byte at a time rather | |
| 2167 than in large chunks. This is for reading from TTY's, so we don't | |
| 2168 block. #### We should instead create a non-blocking filedesc stream | |
| 2169 that emulates the behavior as necessary using select(), when the | |
| 2170 fcntls don't work. (As seems to be the case on Cygwin.) | |
| 2171 | |
| 2172 LSTREAM_FL_NO_INIT_CHAR_MODE_WHEN_READING | |
| 2173 When reading from STREAM, read and process one byte at a time rather | |
| 2174 than in large chunks. This is for reading from TTY's, so we don't | |
| 2175 block. #### We should instead create a non-blocking filedesc stream | |
| 2176 that emulates the behavior as necessary using select(), when the | |
| 2177 fcntls don't work. (As seems to be the case on Cygwin.) | |
| 2178 */ | |
| 771 | 2179 Lisp_Object |
| 2180 make_coding_input_stream (Lstream *stream, Lisp_Object codesys, | |
| 802 | 2181 enum encode_decode direction, int flags) |
| 771 | 2182 { |
| 800 | 2183 return make_coding_stream_1 (stream, codesys, "r", direction, |
| 802 | 2184 flags); |
| 771 | 2185 } |
| 2186 | |
| 814 | 2187 /* FLAGS: |
| 2188 | |
| 2189 LSTREAM_FL_NO_CLOSE_OTHER | |
| 2190 Don't close STREAM (the stream at the other end) when this stream is | |
| 2191 closed. | |
| 2192 */ | |
| 771 | 2193 Lisp_Object |
| 2194 make_coding_output_stream (Lstream *stream, Lisp_Object codesys, | |
| 802 | 2195 enum encode_decode direction, int flags) |
| 771 | 2196 { |
| 800 | 2197 return make_coding_stream_1 (stream, codesys, "w", direction, |
| 802 | 2198 flags); |
| 771 | 2199 } |
| 2200 | |
| 2201 static Lisp_Object | |
| 2202 encode_decode_coding_region (Lisp_Object start, Lisp_Object end, | |
| 2203 Lisp_Object coding_system, Lisp_Object buffer, | |
| 2204 enum encode_decode direction) | |
| 2205 { | |
| 2206 Charbpos b, e; | |
| 2207 struct buffer *buf = decode_buffer (buffer, 0); | |
| 2208 Lisp_Object instream = Qnil, to_outstream = Qnil, outstream = Qnil; | |
| 2209 Lisp_Object from_outstream = Qnil, auto_outstream = Qnil; | |
| 2210 Lisp_Object lb_outstream = Qnil; | |
| 2211 Lisp_Object next; | |
| 2212 Lstream *istr, *ostr; | |
| 2213 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; | |
| 2214 struct gcpro ngcpro1; | |
| 2215 int source_char, sink_char; | |
| 2216 | |
| 2217 get_buffer_range_char (buf, start, end, &b, &e, 0); | |
| 2218 barf_if_buffer_read_only (buf, b, e); | |
| 2219 | |
| 2220 GCPRO5 (instream, to_outstream, outstream, from_outstream, lb_outstream); | |
| 2221 NGCPRO1 (auto_outstream); | |
| 2222 | |
| 2223 coding_system = Fget_coding_system (coding_system); | |
| 2224 source_char = encode_decode_source_sink_type_is_char (coding_system, | |
| 2225 CODING_SOURCE, | |
| 2226 direction); | |
| 2227 sink_char = encode_decode_source_sink_type_is_char (coding_system, | |
| 2228 CODING_SINK, | |
| 2229 direction); | |
| 2230 | |
| 2231 /* Order is IN <---> [TO] -> OUT -> [FROM] -> [AUTODETECT-EOL] -> LB */ | |
| 2232 instream = make_lisp_buffer_input_stream (buf, b, e, 0); | |
| 2233 next = lb_outstream = make_lisp_buffer_output_stream (buf, b, 0); | |
| 2234 | |
| 2235 if (direction == CODING_DECODE && | |
| 2236 XCODING_SYSTEM_EOL_TYPE (coding_system) == EOL_AUTODETECT) | |
| 2237 next = auto_outstream = | |
| 2238 make_coding_output_stream | |
| 800 | 2239 (XLSTREAM (next), Fget_coding_system (Qconvert_eol_autodetect), |
| 2240 CODING_DECODE, 0); | |
| 771 | 2241 |
| 2242 if (!sink_char) | |
| 2243 next = from_outstream = | |
| 800 | 2244 make_coding_output_stream (XLSTREAM (next), Qbinary, CODING_DECODE, 0); |
| 771 | 2245 outstream = make_coding_output_stream (XLSTREAM (next), coding_system, |
| 800 | 2246 direction, 0); |
| 771 | 2247 if (!source_char) |
| 428 | 2248 { |
| 771 | 2249 to_outstream = |
| 2250 make_coding_output_stream (XLSTREAM (outstream), | |
| 800 | 2251 Qbinary, CODING_ENCODE, 0); |
| 771 | 2252 ostr = XLSTREAM (to_outstream); |
| 2253 } | |
| 2254 else | |
| 2255 ostr = XLSTREAM (outstream); | |
| 2256 istr = XLSTREAM (instream); | |
| 2257 | |
| 2258 /* The chain of streams looks like this: | |
| 2259 | |
| 2297 | 2260 [BUFFER] <----- (( read from/send to loop )) |
| 771 | 2261 ------> [CHAR->BYTE i.e. ENCODE AS BINARY if source is |
| 2262 in bytes] | |
| 2263 ------> [ENCODE/DECODE AS SPECIFIED] | |
| 2264 ------> [BYTE->CHAR i.e. DECODE AS BINARY | |
| 2265 if sink is in bytes] | |
| 2266 ------> [AUTODETECT EOL if | |
| 2267 we're decoding and | |
| 2268 coding system calls | |
| 2269 for this] | |
| 2270 ------> [BUFFER] | |
| 2271 */ | |
| 2367 | 2272 |
| 2273 /* #### See comment | |
| 2274 | |
| 2275 EFFICIENCY OF CODING CONVERSION WITH MULTIPLE COPIES/CHAINS | |
| 2276 | |
| 2277 in text.c. | |
| 2278 */ | |
| 2279 | |
| 771 | 2280 while (1) |
| 2281 { | |
| 2282 char tempbuf[1024]; /* some random amount */ | |
| 2283 Charbpos newpos, even_newer_pos; | |
| 2284 Charbpos oldpos = lisp_buffer_stream_startpos (istr); | |
| 2285 Bytecount size_in_bytes = | |
| 2286 Lstream_read (istr, tempbuf, sizeof (tempbuf)); | |
| 2287 | |
| 2288 if (!size_in_bytes) | |
| 2289 break; | |
| 2290 newpos = lisp_buffer_stream_startpos (istr); | |
| 2291 Lstream_write (ostr, tempbuf, size_in_bytes); | |
| 2292 even_newer_pos = lisp_buffer_stream_startpos (istr); | |
| 2293 buffer_delete_range (buf, even_newer_pos - (newpos - oldpos), | |
| 2294 even_newer_pos, 0); | |
| 428 | 2295 } |
| 771 | 2296 |
| 2297 { | |
| 2298 Charcount retlen = | |
| 2299 lisp_buffer_stream_startpos (XLSTREAM (instream)) - b; | |
| 2300 Lstream_close (istr); | |
| 2301 Lstream_close (ostr); | |
| 2302 NUNGCPRO; | |
| 2303 UNGCPRO; | |
| 2304 Lstream_delete (istr); | |
| 2305 if (!NILP (from_outstream)) | |
| 2306 Lstream_delete (XLSTREAM (from_outstream)); | |
| 2307 Lstream_delete (XLSTREAM (outstream)); | |
| 2308 if (!NILP (to_outstream)) | |
| 2309 Lstream_delete (XLSTREAM (to_outstream)); | |
| 2310 if (!NILP (auto_outstream)) | |
| 2311 Lstream_delete (XLSTREAM (auto_outstream)); | |
| 2312 Lstream_delete (XLSTREAM (lb_outstream)); | |
| 2313 return make_int (retlen); | |
| 2314 } | |
| 2315 } | |
| 2316 | |
| 3302 | 2317 DEFUN ("decode-coding-region", Fdecode_coding_region, 3, 4, |
| 2318 "*r\nzDecode from coding system: \ni", /* | |
| 771 | 2319 Decode the text between START and END which is encoded in CODING-SYSTEM. |
| 2320 This is useful if you've read in encoded text from a file without decoding | |
| 2321 it (e.g. you read in a JIS-formatted file but used the `binary' or | |
| 2322 `no-conversion' coding system, so that it shows up as "^[$B!<!+^[(B"). | |
| 2323 Return length of decoded text. | |
| 3302 | 2324 BUFFER defaults to the current buffer if unspecified, and when interactive. |
| 771 | 2325 */ |
| 2326 (start, end, coding_system, buffer)) | |
| 2327 { | |
| 2328 return encode_decode_coding_region (start, end, coding_system, buffer, | |
| 2329 CODING_DECODE); | |
| 2330 } | |
| 2331 | |
| 3302 | 2332 DEFUN ("encode-coding-region", Fencode_coding_region, 3, 4, |
| 2333 "*r\nzEncode to coding system: \ni", /* | |
| 771 | 2334 Encode the text between START and END using CODING-SYSTEM. |
| 2335 This will, for example, convert Japanese characters into stuff such as | |
| 3302 | 2336 "^[$B!<!+^[(B" if you use the JIS encoding. Return length of encoded text. |
| 2337 BUFFER defaults to the current buffer if unspecified, and when interactive. | |
| 771 | 2338 */ |
| 2339 (start, end, coding_system, buffer)) | |
| 2340 { | |
| 2341 return encode_decode_coding_region (start, end, coding_system, buffer, | |
| 2342 CODING_ENCODE); | |
| 428 | 2343 } |
| 2344 | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2345 DEFUN ("query-coding-region", Fquery_coding_region, 3, 7, 0, /* |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2346 Work out whether CODING-SYSTEM can losslessly encode a region. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2347 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2348 START and END are the beginning and end of the region to check. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2349 CODING-SYSTEM is the coding system to try. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2350 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2351 Optional argument BUFFER is the buffer to check, and defaults to the current |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2352 buffer. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2353 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2354 IGNORE-INVALID-SEQUENCESP, also an optional argument, says to treat XEmacs |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2355 characters which have an unambiguous encoded representation, despite being |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2356 undefined in what they represent, as encodable. These chiefly arise with |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2357 variable-length encodings like UTF-8 and UTF-16, where an invalid sequence |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2358 is passed through to XEmacs as a sequence of characters with a defined |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2359 correspondence to the octets on disk, but no non-error semantics; see the |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2360 `invalid-sequence-coding-system' argument to `set-language-info'. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2361 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2362 They can also arise with fixed-length encodings like ISO 8859-7, where |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2363 certain octets on disk have undefined values, and treating them as |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2364 corresponding to the ISO 8859-1 characters with the same numerical values |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2365 may lead to data that is not understood by other applications. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2366 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2367 Optional argument ERRORP says to signal a `text-conversion-error' if some |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2368 character in the region cannot be encoded, and defaults to nil. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2369 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2370 Optional argument HIGHLIGHT says to display unencodable characters in the |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2371 region using `query-coding-warning-face'. It defaults to nil. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
2372 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2373 This function can return multiple values; the intention is that callers use |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2374 `multiple-value-bind' or the related CL multiple value functions to deal |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2375 with it. The first result is `t' if the region can be encoded using |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2376 CODING-SYSTEM, or `nil' if not. If the region cannot be encoded using |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2377 CODING-SYSTEM, the second result is a range table describing the positions |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2378 of the unencodable characters. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2379 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2380 Ranges that describe characters that would be ignored were |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2381 IGNORE-INVALID-SEQUENCESP non-nil map to the symbol `invalid-sequence'; |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2382 other ranges map to the symbol `unencodable'. If IGNORE-INVALID-SEQUENCESP |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2383 is non-nil, all ranges will map to the symbol `unencodable'. See |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2384 `make-range-table' for more details of range tables. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2385 */ |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2386 (start, end, coding_system, buffer, ignore_invalid_sequencesp, |
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2387 errorp, highlight)) |
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2388 { |
|
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2389 Charbpos b, e; |
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2390 struct buffer *buf = decode_buffer (buffer, 1); |
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2391 Lisp_Object result; |
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2392 int flags = 0, speccount = specpdl_depth (); |
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2393 |
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2394 coding_system = Fget_coding_system (coding_system); |
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2395 |
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2396 get_buffer_range_char (buf, start, end, &b, &e, 0); |
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2397 |
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2398 if (buf != current_buffer) |
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2399 { |
|
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2400 record_unwind_protect (save_current_buffer_restore, Fcurrent_buffer ()); |
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2401 set_buffer_internal (buf); |
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2402 } |
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2403 |
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2404 record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
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2405 |
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2406 BUF_SET_PT (buf, b); |
|
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2407 |
|
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2408 if (!NILP (ignore_invalid_sequencesp)) |
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2409 { |
|
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2410 flags |= QUERY_METHOD_IGNORE_INVALID_SEQUENCES; |
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2411 } |
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2412 |
|
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2413 if (!NILP (errorp)) |
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2414 { |
|
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2415 flags |= QUERY_METHOD_ERRORP; |
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2416 } |
|
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2417 |
|
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2418 if (!NILP (highlight)) |
|
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2419 { |
|
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|
2420 flags |= QUERY_METHOD_HIGHLIGHT; |
|
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|
2421 } |
|
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2422 |
|
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2423 result = XCODESYSMETH_OR_GIVEN (coding_system, query, |
|
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|
2424 (coding_system, buf, e, flags), Qunbound); |
|
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2425 |
|
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|
2426 if (UNBOUNDP (result)) |
|
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2427 { |
|
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|
2428 signal_error (Qtext_conversion_error, |
|
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|
2429 "Coding system doesn't say what it can encode", |
|
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2430 XCODING_SYSTEM_NAME (coding_system)); |
|
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2431 } |
|
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|
2432 |
|
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2433 result = (NILP (result)) ? Qt : values2 (Qnil, result); |
|
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2434 |
|
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2435 return unbind_to_1 (speccount, result); |
|
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|
2436 } |
|
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|
2437 |
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2438 |
| 428 | 2439 |
| 2440 /************************************************************************/ | |
| 771 | 2441 /* Chain methods */ |
| 428 | 2442 /************************************************************************/ |
| 2443 | |
| 771 | 2444 /* #### Need a way to create "opposite-direction" coding systems. */ |
| 2445 | |
| 2446 /* Chain two or more coding systems together to make a combination coding | |
| 2447 system. */ | |
| 2448 | |
| 2449 struct chain_coding_system | |
| 2450 { | |
| 2451 /* List of coding systems, in decode order */ | |
| 2452 Lisp_Object *chain; | |
| 2453 /* Number of coding systems in list */ | |
| 2454 int count; | |
| 2455 /* Coding system to return as a result of canonicalize-after-coding */ | |
| 2456 Lisp_Object canonicalize_after_coding; | |
| 2457 }; | |
| 2458 | |
| 2459 struct chain_coding_stream | |
| 2460 { | |
| 2461 int initted; | |
| 2462 /* Lstreams for chain coding system */ | |
| 2463 Lisp_Object *lstreams; | |
| 2464 int lstream_count; | |
| 2465 }; | |
| 2466 | |
| 1204 | 2467 static const struct memory_description chain_coding_system_description[] = { |
| 2468 { XD_INT, offsetof (struct chain_coding_system, count) }, | |
| 2367 | 2469 { XD_BLOCK_PTR, offsetof (struct chain_coding_system, chain), |
| 2551 | 2470 XD_INDIRECT (0, 0), { &lisp_object_description } }, |
| 1204 | 2471 { XD_LISP_OBJECT, offsetof (struct chain_coding_system, |
| 2472 canonicalize_after_coding) }, | |
| 771 | 2473 { XD_END } |
| 2474 }; | |
| 2475 | |
| 1204 | 2476 static const struct memory_description chain_coding_stream_description_1 [] = { |
| 2477 { XD_INT, offsetof (struct chain_coding_stream, lstream_count) }, | |
| 2367 | 2478 { XD_BLOCK_PTR, offsetof (struct chain_coding_stream, lstreams), |
| 2551 | 2479 XD_INDIRECT (0, 0), { &lisp_object_description } }, |
| 771 | 2480 { XD_END } |
| 2481 }; | |
| 2482 | |
| 1204 | 2483 const struct sized_memory_description chain_coding_stream_description = { |
| 2484 sizeof (struct chain_coding_stream), chain_coding_stream_description_1 | |
| 2485 }; | |
| 2486 | |
| 2487 DEFINE_CODING_SYSTEM_TYPE_WITH_DATA (chain); | |
| 2488 | |
| 771 | 2489 static Lisp_Object |
| 2490 chain_canonicalize (Lisp_Object codesys) | |
| 2491 { | |
| 2492 /* We make use of the fact that this method is called at init time, after | |
| 2493 properties have been parsed. init_method is called too early. */ | |
| 2494 /* #### It's not clear we need this whole chain-canonicalize mechanism | |
| 2495 any more. */ | |
| 2496 Lisp_Object chain = Flist (XCODING_SYSTEM_CHAIN_COUNT (codesys), | |
| 2497 XCODING_SYSTEM_CHAIN_CHAIN (codesys)); | |
| 2498 chain = Fcons (XCODING_SYSTEM_PRE_WRITE_CONVERSION (codesys), | |
| 2499 Fcons (XCODING_SYSTEM_POST_READ_CONVERSION (codesys), | |
| 2500 chain)); | |
| 2501 Fputhash (chain, codesys, Vchain_canonicalize_hash_table); | |
| 2502 return codesys; | |
| 2503 } | |
| 2504 | |
| 2505 static Lisp_Object | |
| 2506 chain_canonicalize_after_coding (struct coding_stream *str) | |
| 2507 { | |
| 2508 Lisp_Object cac = | |
| 2509 XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (str->codesys); | |
| 2510 if (!NILP (cac)) | |
| 2511 return cac; | |
| 2512 return str->codesys; | |
| 2513 #if 0 | |
| 2514 struct chain_coding_stream *data = CODING_STREAM_TYPE_DATA (str, chain); | |
| 2515 Lisp_Object us = str->codesys, codesys; | |
| 2516 int i; | |
| 2517 Lisp_Object chain; | |
| 2518 Lisp_Object tail; | |
| 2519 int changed = 0; | |
| 2520 | |
| 2521 /* #### It's not clear we need this whole chain-canonicalize mechanism | |
| 2522 any more. */ | |
| 2523 if (str->direction == CODING_ENCODE || !data->initted) | |
| 2524 return us; | |
| 2525 | |
| 2526 chain = Flist (XCODING_SYSTEM_CHAIN_COUNT (us), | |
| 2527 XCODING_SYSTEM_CHAIN_CHAIN (us)); | |
| 2528 | |
| 2529 tail = chain; | |
| 2530 for (i = 0; i < XCODING_SYSTEM_CHAIN_COUNT (us); i++) | |
| 2531 { | |
| 2532 codesys = (coding_stream_canonicalize_after_coding | |
| 2533 (XLSTREAM (data->lstreams[i]))); | |
| 2534 if (!EQ (codesys, XCAR (tail))) | |
| 2535 changed = 1; | |
| 2536 XCAR (tail) = codesys; | |
| 2537 tail = XCDR (tail); | |
| 2538 } | |
| 2539 | |
| 2540 if (!changed) | |
| 2541 return us; | |
| 2542 | |
| 2543 chain = delq_no_quit (Qnil, chain); | |
| 2544 | |
| 2545 if (NILP (XCODING_SYSTEM_PRE_WRITE_CONVERSION (us)) && | |
| 2546 NILP (XCODING_SYSTEM_POST_READ_CONVERSION (us))) | |
| 2547 { | |
| 2548 if (NILP (chain)) | |
| 2549 return Qnil; | |
| 2550 if (NILP (XCDR (chain))) | |
| 2551 return XCAR (chain); | |
| 2552 } | |
| 2553 | |
| 2554 codesys = Fgethash (Fcons (XCODING_SYSTEM_PRE_WRITE_CONVERSION (us), | |
| 2555 Fcons (XCODING_SYSTEM_POST_READ_CONVERSION (us), | |
| 2556 chain)), Vchain_canonicalize_hash_table, | |
| 2557 Qnil); | |
| 2558 if (!NILP (codesys)) | |
| 2559 return codesys; | |
| 2560 return make_internal_coding_system | |
| 2561 (us, "internal-chain-canonicalizer-wrapper", | |
| 2562 Qchain, Qunbound, list2 (Qchain, chain)); | |
| 2563 #endif /* 0 */ | |
| 2564 } | |
| 2565 | |
| 2566 static void | |
| 2567 chain_init (Lisp_Object codesys) | |
| 2568 { | |
| 2569 XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (codesys) = Qnil; | |
| 2570 } | |
| 2571 | |
| 2572 static void | |
| 2573 chain_mark (Lisp_Object codesys) | |
| 2574 { | |
| 2575 int i; | |
| 2576 | |
| 2577 for (i = 0; i < XCODING_SYSTEM_CHAIN_COUNT (codesys); i++) | |
| 2578 mark_object (XCODING_SYSTEM_CHAIN_CHAIN (codesys)[i]); | |
| 2579 mark_object (XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (codesys)); | |
| 2580 } | |
| 2581 | |
| 2582 static void | |
| 2583 chain_mark_coding_stream_1 (struct chain_coding_stream *data) | |
| 2584 { | |
| 2585 int i; | |
| 2586 | |
| 2587 for (i = 0; i < data->lstream_count; i++) | |
| 2588 mark_object (data->lstreams[i]); | |
| 2589 } | |
| 2590 | |
| 2591 static void | |
| 2592 chain_mark_coding_stream (struct coding_stream *str) | |
| 2593 { | |
| 2594 chain_mark_coding_stream_1 (CODING_STREAM_TYPE_DATA (str, chain)); | |
| 2595 } | |
| 2596 | |
| 2597 static void | |
| 2598 chain_print (Lisp_Object cs, Lisp_Object printcharfun, int escapeflag) | |
| 2599 { | |
| 2600 int i; | |
| 2601 | |
|
4952
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2602 write_ascstring (printcharfun, "("); |
| 771 | 2603 for (i = 0; i < XCODING_SYSTEM_CHAIN_COUNT (cs); i++) |
| 2604 { | |
|
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|
2605 write_ascstring (printcharfun, i == 0 ? "" : "->"); |
| 771 | 2606 print_coding_system_in_print_method (XCODING_SYSTEM_CHAIN_CHAIN (cs)[i], |
| 2607 printcharfun, escapeflag); | |
| 2608 } | |
| 2609 { | |
| 2610 Lisp_Object cac = XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (cs); | |
| 2611 if (!NILP (cac)) | |
| 2612 { | |
| 2613 if (i > 0) | |
|
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2614 write_ascstring (printcharfun, " "); |
|
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|
2615 write_ascstring (printcharfun, "canonicalize-after-coding="); |
| 771 | 2616 print_coding_system_in_print_method (cac, printcharfun, escapeflag); |
| 2617 } | |
| 2618 } | |
| 2619 | |
|
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2620 write_ascstring (printcharfun, ")"); |
| 771 | 2621 } |
| 2622 | |
| 2623 static void | |
| 2624 chain_rewind_coding_stream_1 (struct chain_coding_stream *data) | |
| 2625 { | |
| 2626 /* Each will rewind the next; there is always at least one stream (the | |
| 2627 dynarr stream at the end) if we're initted */ | |
| 2628 if (data->initted) | |
| 2629 Lstream_rewind (XLSTREAM (data->lstreams[0])); | |
| 2630 } | |
| 2631 | |
| 2632 static void | |
| 2633 chain_rewind_coding_stream (struct coding_stream *str) | |
| 2634 { | |
| 2635 chain_rewind_coding_stream_1 (CODING_STREAM_TYPE_DATA (str, chain)); | |
| 2636 } | |
| 2637 | |
| 2638 static void | |
| 2639 chain_init_coding_streams_1 (struct chain_coding_stream *data, | |
| 2640 unsigned_char_dynarr *dst, | |
| 2641 int ncodesys, Lisp_Object *codesys, | |
| 2642 enum encode_decode direction) | |
| 2643 { | |
| 2644 int i; | |
| 2645 Lisp_Object lstream_out; | |
| 2646 | |
| 2647 data->lstream_count = ncodesys + 1; | |
| 2648 data->lstreams = xnew_array (Lisp_Object, data->lstream_count); | |
| 2649 | |
| 2650 lstream_out = make_dynarr_output_stream (dst); | |
| 2651 Lstream_set_buffering (XLSTREAM (lstream_out), LSTREAM_UNBUFFERED, 0); | |
| 2652 data->lstreams[data->lstream_count - 1] = lstream_out; | |
| 2653 | |
| 2654 for (i = ncodesys - 1; i >= 0; i--) | |
| 2655 { | |
| 2656 data->lstreams[i] = | |
| 2657 make_coding_output_stream | |
| 2658 (XLSTREAM (lstream_out), | |
| 2659 codesys[direction == CODING_ENCODE ? ncodesys - (i + 1) : i], | |
| 800 | 2660 direction, 0); |
| 771 | 2661 lstream_out = data->lstreams[i]; |
| 2662 Lstream_set_buffering (XLSTREAM (lstream_out), LSTREAM_UNBUFFERED, | |
| 2663 0); | |
| 2664 } | |
| 2665 data->initted = 1; | |
| 2666 } | |
| 2667 | |
| 2668 static Bytecount | |
| 2669 chain_convert (struct coding_stream *str, const UExtbyte *src, | |
| 2670 unsigned_char_dynarr *dst, Bytecount n) | |
| 2671 { | |
| 2672 struct chain_coding_stream *data = CODING_STREAM_TYPE_DATA (str, chain); | |
| 2673 | |
| 2674 if (str->eof) | |
| 2675 { | |
| 2676 /* Each will close the next; there is always at least one stream (the | |
| 2677 dynarr stream at the end) if we're initted. We need to close now | |
| 2678 because more data may be generated. */ | |
| 2679 if (data->initted) | |
| 2680 Lstream_close (XLSTREAM (data->lstreams[0])); | |
| 2681 return n; | |
| 2682 } | |
| 2683 | |
| 2684 if (!data->initted) | |
| 2685 chain_init_coding_streams_1 | |
| 2686 (data, dst, XCODING_SYSTEM_CHAIN_COUNT (str->codesys), | |
| 2687 XCODING_SYSTEM_CHAIN_CHAIN (str->codesys), str->direction); | |
| 2688 | |
| 2689 if (Lstream_write (XLSTREAM (data->lstreams[0]), src, n) < 0) | |
| 2690 return -1; | |
| 2691 return n; | |
| 2692 } | |
| 2693 | |
| 2694 static void | |
| 2695 chain_finalize_coding_stream_1 (struct chain_coding_stream *data) | |
| 2696 { | |
| 2697 if (data->lstreams) | |
| 2698 { | |
| 2297 | 2699 /* During GC, these objects are unmarked, and are about to be freed. |
| 2700 We do NOT want them on the free list, and that will cause lots of | |
| 2701 nastiness including crashes. Just let them be freed normally. */ | |
| 771 | 2702 if (!gc_in_progress) |
| 2703 { | |
| 2704 int i; | |
| 2297 | 2705 /* Order of deletion is important here! Delete from the head of |
| 2706 the chain and work your way towards the tail. In general, | |
| 2707 when you delete an object, there should be *NO* pointers to it | |
| 2708 anywhere. Deleting back-to-front would be a problem because | |
| 2709 there are pointers going forward. If there were pointers in | |
| 2710 both directions, you'd have to disconnect the pointers to a | |
| 2711 particular object before deleting it. */ | |
| 771 | 2712 for (i = 0; i < data->lstream_count; i++) |
| 2713 Lstream_delete (XLSTREAM ((data->lstreams)[i])); | |
| 2714 } | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2715 xfree (data->lstreams); |
| 771 | 2716 } |
| 2717 } | |
| 2718 | |
| 2719 static void | |
| 2720 chain_finalize_coding_stream (struct coding_stream *str) | |
| 2721 { | |
| 2722 chain_finalize_coding_stream_1 (CODING_STREAM_TYPE_DATA (str, chain)); | |
| 2723 } | |
| 2724 | |
| 2725 static void | |
| 2726 chain_finalize (Lisp_Object c) | |
| 2727 { | |
| 2728 if (XCODING_SYSTEM_CHAIN_CHAIN (c)) | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2729 xfree (XCODING_SYSTEM_CHAIN_CHAIN (c)); |
| 771 | 2730 } |
| 2731 | |
| 428 | 2732 static int |
| 771 | 2733 chain_putprop (Lisp_Object codesys, Lisp_Object key, Lisp_Object value) |
| 2734 { | |
| 2735 if (EQ (key, Qchain)) | |
| 2736 { | |
| 2737 Lisp_Object *cslist; | |
| 2738 int count = 0; | |
| 2739 int i; | |
| 2740 | |
| 2367 | 2741 { |
| 2742 EXTERNAL_LIST_LOOP_2 (elt, value) | |
| 2743 { | |
| 2744 Fget_coding_system (elt); | |
| 2745 count++; | |
| 2746 } | |
| 2747 } | |
| 771 | 2748 |
| 2749 cslist = xnew_array (Lisp_Object, count); | |
| 2750 XCODING_SYSTEM_CHAIN_CHAIN (codesys) = cslist; | |
| 2751 | |
| 2752 count = 0; | |
| 2367 | 2753 { |
| 2754 EXTERNAL_LIST_LOOP_2 (elt, value) | |
| 2755 { | |
| 2756 cslist[count] = Fget_coding_system (elt); | |
| 2757 count++; | |
| 2758 } | |
| 2759 } | |
| 771 | 2760 |
| 2761 XCODING_SYSTEM_CHAIN_COUNT (codesys) = count; | |
| 2762 | |
| 2763 for (i = 0; i < count - 1; i++) | |
| 2764 { | |
| 2765 if (decoding_source_sink_type_is_char (cslist[i], CODING_SINK) != | |
| 2766 decoding_source_sink_type_is_char (cslist[i + 1], CODING_SOURCE)) | |
| 2767 invalid_argument_2 ("Sink of first must match source of second", | |
| 2768 cslist[i], cslist[i + 1]); | |
| 2769 } | |
| 2770 } | |
| 2771 else if (EQ (key, Qcanonicalize_after_coding)) | |
| 2772 XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (codesys) = | |
| 2773 Fget_coding_system (value); | |
| 2774 else | |
| 2775 return 0; | |
| 2776 return 1; | |
| 2777 } | |
| 2778 | |
| 2779 static Lisp_Object | |
| 2780 chain_getprop (Lisp_Object coding_system, Lisp_Object prop) | |
| 2781 { | |
| 2782 if (EQ (prop, Qchain)) | |
| 2783 { | |
| 2784 Lisp_Object result = Qnil; | |
| 2785 int i; | |
| 2786 | |
| 2787 for (i = 0; i < XCODING_SYSTEM_CHAIN_COUNT (coding_system); i++) | |
| 2788 result = Fcons (XCODING_SYSTEM_CHAIN_CHAIN (coding_system)[i], | |
| 2789 result); | |
| 2790 | |
| 2791 return Fnreverse (result); | |
| 2792 } | |
| 2793 else if (EQ (prop, Qcanonicalize_after_coding)) | |
| 2794 return XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (coding_system); | |
| 2795 else | |
| 2796 return Qunbound; | |
| 2797 } | |
| 2798 | |
| 2799 static enum source_sink_type | |
| 2800 chain_conversion_end_type (Lisp_Object codesys) | |
| 2801 { | |
| 2802 Lisp_Object *cslist = XCODING_SYSTEM_CHAIN_CHAIN (codesys); | |
| 2803 int n = XCODING_SYSTEM_CHAIN_COUNT (codesys); | |
| 2804 int charp_source, charp_sink; | |
| 2805 | |
| 2806 if (n == 0) | |
| 2807 return DECODES_BYTE_TO_BYTE; /* arbitrary */ | |
| 2808 charp_source = decoding_source_sink_type_is_char (cslist[0], CODING_SOURCE); | |
| 2809 charp_sink = decoding_source_sink_type_is_char (cslist[n - 1], CODING_SINK); | |
| 2810 | |
| 2811 switch (charp_source * 2 + charp_sink) | |
| 2812 { | |
| 2813 case 0: return DECODES_BYTE_TO_BYTE; | |
| 2814 case 1: return DECODES_BYTE_TO_CHARACTER; | |
| 2815 case 2: return DECODES_CHARACTER_TO_BYTE; | |
| 2816 case 3: return DECODES_CHARACTER_TO_CHARACTER; | |
| 2817 } | |
| 2818 | |
| 2500 | 2819 ABORT (); |
| 771 | 2820 return DECODES_BYTE_TO_BYTE; |
| 2821 } | |
| 2822 | |
| 2823 | |
| 2824 /************************************************************************/ | |
| 2825 /* No-conversion methods */ | |
| 2826 /************************************************************************/ | |
| 2827 | |
| 2828 /* "No conversion"; used for binary files. We use quotes because there | |
| 2829 really is some conversion being applied (it does byte<->char | |
| 2830 conversion), but it appears to the user as if the text is read in | |
| 2297 | 2831 without conversion. |
| 2832 | |
| 2833 #### Shouldn't we _call_ it that, then? And while we're at it, | |
| 2834 separate it into "to_internal" and "to_external"? */ | |
| 771 | 2835 DEFINE_CODING_SYSTEM_TYPE (no_conversion); |
| 2836 | |
| 2837 /* This is used when reading in "binary" files -- i.e. files that may | |
| 2838 contain all 256 possible byte values and that are not to be | |
| 2839 interpreted as being in any particular encoding. */ | |
| 2840 static Bytecount | |
| 2841 no_conversion_convert (struct coding_stream *str, | |
| 2842 const UExtbyte *src, | |
| 2843 unsigned_char_dynarr *dst, Bytecount n) | |
| 2844 { | |
| 2845 UExtbyte c; | |
| 2846 unsigned int ch = str->ch; | |
| 2847 Bytecount orign = n; | |
| 2848 | |
| 2849 if (str->direction == CODING_DECODE) | |
| 2850 { | |
| 2851 while (n--) | |
| 2852 { | |
| 2853 c = *src++; | |
| 2854 | |
| 2855 DECODE_ADD_BINARY_CHAR (c, dst); | |
| 2856 } | |
| 2857 | |
| 2858 if (str->eof) | |
| 2859 DECODE_OUTPUT_PARTIAL_CHAR (ch, dst); | |
| 2860 } | |
| 2861 else | |
| 2862 { | |
| 2863 | |
| 2864 while (n--) | |
| 2865 { | |
| 2866 c = *src++; | |
| 826 | 2867 if (byte_ascii_p (c)) |
| 771 | 2868 { |
| 2869 assert (ch == 0); | |
| 2870 Dynarr_add (dst, c); | |
| 2871 } | |
| 2872 #ifdef MULE | |
| 867 | 2873 else if (ibyte_leading_byte_p (c)) |
| 771 | 2874 { |
| 2875 assert (ch == 0); | |
| 2876 if (c == LEADING_BYTE_LATIN_ISO8859_1 || | |
| 2877 c == LEADING_BYTE_CONTROL_1) | |
| 2878 ch = c; | |
| 2879 else | |
| 2297 | 2880 /* #### This is just plain unacceptable. */ |
| 771 | 2881 Dynarr_add (dst, '~'); /* untranslatable character */ |
| 2882 } | |
| 2883 else | |
| 2884 { | |
| 2885 if (ch == LEADING_BYTE_LATIN_ISO8859_1) | |
| 2886 Dynarr_add (dst, c); | |
| 2887 else if (ch == LEADING_BYTE_CONTROL_1) | |
| 2888 { | |
| 2889 assert (c < 0xC0); | |
| 2890 Dynarr_add (dst, c - 0x20); | |
| 2891 } | |
| 2892 /* else it should be the second or third byte of an | |
| 2893 untranslatable character, so ignore it */ | |
| 2894 ch = 0; | |
| 2895 } | |
| 2896 #endif /* MULE */ | |
| 2897 | |
| 2898 } | |
| 2899 } | |
| 2900 | |
| 2901 str->ch = ch; | |
| 2902 return orign; | |
| 2903 } | |
| 2904 | |
| 2905 DEFINE_DETECTOR (no_conversion); | |
| 2906 DEFINE_DETECTOR_CATEGORY (no_conversion, no_conversion); | |
| 2907 | |
| 2908 struct no_conversion_detector | |
| 2909 { | |
| 2910 int dummy; | |
| 2911 }; | |
| 2912 | |
| 2913 static void | |
| 2286 | 2914 no_conversion_detect (struct detection_state *st, const UExtbyte *UNUSED (src), |
| 2915 Bytecount UNUSED (n)) | |
| 771 | 2916 { |
| 2917 /* Hack until we get better handling of this stuff! */ | |
| 2918 DET_RESULT (st, no_conversion) = DET_SLIGHTLY_LIKELY; | |
| 2919 } | |
| 2920 | |
| 2921 | |
| 2922 /************************************************************************/ | |
| 2923 /* Convert-eol methods */ | |
| 2924 /************************************************************************/ | |
| 2925 | |
| 2926 /* This is used to handle end-of-line (EOL) differences. It is | |
| 2819 | 2927 character-to-character, and works (when encoding) *BEFORE* sending data to |
| 2928 the main encoding routine -- thus, that routine must handle different EOL | |
| 2929 types itself if it does line-oriented type processing. This is unavoidable | |
| 2930 because we don't know whether the output of the main encoding routine is | |
| 2931 ASCII compatible (UTF-16 is definitely not, for example). [[ sjt sez this | |
| 2932 is bogus. There should be _no_ EOL processing (or processing of any kind) | |
| 2933 after conversion to external. ]] | |
| 771 | 2934 |
| 793 | 2935 There is one parameter: `subtype', either `cr', `lf', `crlf', or nil. |
| 771 | 2936 */ |
| 2937 | |
| 2938 struct convert_eol_coding_system | |
| 2939 { | |
| 2940 enum eol_type subtype; | |
| 2132 | 2941 int dummy; /* On some architectures (eg ia64) the portable dumper can |
| 2942 produce unaligned access errors without this field. Probably | |
| 2943 because the combined structure of this structure and | |
| 2944 Lisp_Coding_System is not properly aligned. */ | |
| 771 | 2945 }; |
| 2946 | |
| 2947 #define CODING_SYSTEM_CONVERT_EOL_SUBTYPE(codesys) \ | |
| 2948 (CODING_SYSTEM_TYPE_DATA (codesys, convert_eol)->subtype) | |
| 2949 #define XCODING_SYSTEM_CONVERT_EOL_SUBTYPE(codesys) \ | |
| 2950 (XCODING_SYSTEM_TYPE_DATA (codesys, convert_eol)->subtype) | |
| 2951 | |
| 2952 struct convert_eol_coding_stream | |
| 2953 { | |
| 2954 enum eol_type actual; | |
| 2955 }; | |
| 2956 | |
| 1204 | 2957 static const struct memory_description |
| 771 | 2958 convert_eol_coding_system_description[] = { |
| 2959 { XD_END } | |
| 2960 }; | |
| 2961 | |
| 1204 | 2962 DEFINE_CODING_SYSTEM_TYPE_WITH_DATA (convert_eol); |
| 2963 | |
| 771 | 2964 static void |
| 2286 | 2965 convert_eol_print (Lisp_Object cs, Lisp_Object printcharfun, |
| 2966 int UNUSED (escapeflag)) | |
| 771 | 2967 { |
| 2968 struct convert_eol_coding_system *data = | |
| 2969 XCODING_SYSTEM_TYPE_DATA (cs, convert_eol); | |
| 2970 | |
| 2971 write_fmt_string (printcharfun, "(%s)", | |
| 2972 data->subtype == EOL_LF ? "lf" : | |
| 2973 data->subtype == EOL_CRLF ? "crlf" : | |
| 2974 data->subtype == EOL_CR ? "cr" : | |
| 793 | 2975 data->subtype == EOL_AUTODETECT ? "nil" : |
| 2500 | 2976 (ABORT(), "")); |
| 771 | 2977 } |
| 2978 | |
| 2979 static enum source_sink_type | |
| 2286 | 2980 convert_eol_conversion_end_type (Lisp_Object UNUSED (codesys)) |
| 771 | 2981 { |
| 2982 return DECODES_CHARACTER_TO_CHARACTER; | |
| 2983 } | |
| 2984 | |
| 2985 static int | |
| 2986 convert_eol_putprop (Lisp_Object codesys, | |
| 2987 Lisp_Object key, | |
| 2988 Lisp_Object value) | |
| 2989 { | |
| 2990 struct convert_eol_coding_system *data = | |
| 2991 XCODING_SYSTEM_TYPE_DATA (codesys, convert_eol); | |
| 2992 | |
| 2993 if (EQ (key, Qsubtype)) | |
| 2994 { | |
| 2995 if (EQ (value, Qlf) /* || EQ (value, Qunix) */) | |
| 2996 data->subtype = EOL_LF; | |
| 2997 else if (EQ (value, Qcrlf) /* || EQ (value, Qdos) */) | |
| 2998 data->subtype = EOL_CRLF; | |
| 2999 else if (EQ (value, Qcr) /* || EQ (value, Qmac) */) | |
| 3000 data->subtype = EOL_CR; | |
| 793 | 3001 else if (EQ (value, Qnil)) |
| 771 | 3002 data->subtype = EOL_AUTODETECT; |
| 3003 else invalid_constant ("Unrecognized eol type", value); | |
| 3004 } | |
| 3005 else | |
| 3006 return 0; | |
| 3007 return 1; | |
| 3008 } | |
| 3009 | |
| 3010 static Lisp_Object | |
| 3011 convert_eol_getprop (Lisp_Object coding_system, Lisp_Object prop) | |
| 3012 { | |
| 3013 struct convert_eol_coding_system *data = | |
| 3014 XCODING_SYSTEM_TYPE_DATA (coding_system, convert_eol); | |
| 3015 | |
| 3016 if (EQ (prop, Qsubtype)) | |
| 3017 { | |
| 3018 switch (data->subtype) | |
| 3019 { | |
| 3020 case EOL_LF: return Qlf; | |
| 3021 case EOL_CRLF: return Qcrlf; | |
| 3022 case EOL_CR: return Qcr; | |
| 793 | 3023 case EOL_AUTODETECT: return Qnil; |
| 2500 | 3024 default: ABORT (); |
| 771 | 3025 } |
| 3026 } | |
| 3027 | |
| 3028 return Qunbound; | |
| 3029 } | |
| 3030 | |
| 3031 static void | |
| 3032 convert_eol_init_coding_stream (struct coding_stream *str) | |
| 3033 { | |
| 3034 struct convert_eol_coding_stream *data = | |
| 3035 CODING_STREAM_TYPE_DATA (str, convert_eol); | |
| 3036 data->actual = XCODING_SYSTEM_CONVERT_EOL_SUBTYPE (str->codesys); | |
| 3037 } | |
| 3038 | |
| 3039 static Bytecount | |
| 867 | 3040 convert_eol_convert (struct coding_stream *str, const Ibyte *src, |
| 771 | 3041 unsigned_char_dynarr *dst, Bytecount n) |
| 3042 { | |
| 3043 if (str->direction == CODING_DECODE) | |
| 3044 { | |
| 3045 struct convert_eol_coding_stream *data = | |
| 3046 CODING_STREAM_TYPE_DATA (str, convert_eol); | |
| 3047 | |
| 3048 if (data->actual == EOL_AUTODETECT) | |
| 3049 { | |
| 3050 Bytecount n2 = n; | |
| 867 | 3051 const Ibyte *src2 = src; |
| 771 | 3052 |
| 3053 for (; n2; n2--) | |
| 3054 { | |
| 867 | 3055 Ibyte c = *src2++; |
| 771 | 3056 if (c == '\n') |
| 3057 { | |
| 3058 data->actual = EOL_LF; | |
| 3059 break; | |
| 3060 } | |
| 3061 else if (c == '\r') | |
| 3062 { | |
| 3063 if (n2 == 1) | |
| 3064 { | |
| 3065 /* If we're seeing a '\r' at the end of the data, then | |
| 3066 reject the '\r' right now so it doesn't become an | |
| 3067 issue in the code below -- unless we're at the end of | |
| 3068 the stream, in which case we can't do that (because | |
| 3069 then the '\r' will never get written out), and in any | |
| 3070 case we should be recognizing it at EOL_CR format. */ | |
| 3071 if (str->eof) | |
| 3072 data->actual = EOL_CR; | |
| 3073 else | |
| 3074 n--; | |
| 3075 break; | |
| 3076 } | |
| 3077 else if (*src2 == '\n') | |
| 3078 data->actual = EOL_CRLF; | |
| 3079 else | |
| 3080 data->actual = EOL_CR; | |
| 3081 break; | |
| 3082 } | |
| 3083 } | |
| 3084 } | |
| 3085 | |
| 3086 /* str->eof is set, the caller reached EOF on the other end and has | |
| 3087 no new data to give us. The only data we get is the data we | |
| 3088 rejected from last time. */ | |
| 3089 if (data->actual == EOL_LF || data->actual == EOL_AUTODETECT || | |
| 3090 (str->eof)) | |
| 3091 Dynarr_add_many (dst, src, n); | |
| 3092 else | |
| 3093 { | |
| 867 | 3094 const Ibyte *end = src + n; |
| 771 | 3095 while (1) |
| 3096 { | |
| 3097 /* Find the next section with no \r and add it. */ | |
| 867 | 3098 const Ibyte *runstart = src; |
| 3099 src = (Ibyte *) memchr (src, '\r', end - src); | |
| 771 | 3100 if (!src) |
| 3101 src = end; | |
| 3102 Dynarr_add_many (dst, runstart, src - runstart); | |
| 3103 /* Stop if at end ... */ | |
| 3104 if (src == end) | |
| 3105 break; | |
| 3106 /* ... else, translate as necessary. */ | |
| 3107 src++; | |
| 3108 if (data->actual == EOL_CR) | |
| 3109 Dynarr_add (dst, '\n'); | |
| 3110 /* We need to be careful here with CRLF. If we see a CR at the | |
| 3111 end of the data, we don't know if it's part of a CRLF, so we | |
| 3112 reject it. Otherwise: If it's part of a CRLF, eat it and | |
| 3113 loop; the following LF gets added next time around. If it's | |
| 3114 not part of a CRLF, add the CR and loop. The following | |
| 3115 character will be processed in the next loop iteration. This | |
| 3116 correctly handles a sequence like CR+CR+LF. */ | |
| 3117 else if (src == end) | |
| 3118 return n - 1; /* reject the CR at the end; we'll get it again | |
| 3119 next time the convert method is called */ | |
| 3120 else if (*src != '\n') | |
| 3121 Dynarr_add (dst, '\r'); | |
| 3122 } | |
| 3123 } | |
| 3124 | |
| 3125 return n; | |
| 3126 } | |
| 3127 else | |
| 3128 { | |
| 3129 enum eol_type subtype = | |
| 3130 XCODING_SYSTEM_CONVERT_EOL_SUBTYPE (str->codesys); | |
| 867 | 3131 const Ibyte *end = src + n; |
| 771 | 3132 |
| 3133 /* We try to be relatively efficient here. */ | |
| 3134 if (subtype == EOL_LF) | |
| 3135 Dynarr_add_many (dst, src, n); | |
| 3136 else | |
| 3137 { | |
| 3138 while (1) | |
| 3139 { | |
| 3140 /* Find the next section with no \n and add it. */ | |
| 867 | 3141 const Ibyte *runstart = src; |
| 3142 src = (Ibyte *) memchr (src, '\n', end - src); | |
| 771 | 3143 if (!src) |
| 3144 src = end; | |
| 3145 Dynarr_add_many (dst, runstart, src - runstart); | |
| 3146 /* Stop if at end ... */ | |
| 3147 if (src == end) | |
| 3148 break; | |
| 3149 /* ... else, skip over \n and add its translation. */ | |
| 3150 src++; | |
| 3151 Dynarr_add (dst, '\r'); | |
| 3152 if (subtype == EOL_CRLF) | |
| 3153 Dynarr_add (dst, '\n'); | |
| 3154 } | |
| 3155 } | |
| 3156 | |
| 3157 return n; | |
| 3158 } | |
| 3159 } | |
| 3160 | |
| 3161 static Lisp_Object | |
| 3162 convert_eol_canonicalize_after_coding (struct coding_stream *str) | |
| 3163 { | |
| 3164 struct convert_eol_coding_stream *data = | |
| 3165 CODING_STREAM_TYPE_DATA (str, convert_eol); | |
| 3166 | |
| 3167 if (str->direction == CODING_ENCODE) | |
| 3168 return str->codesys; | |
| 3169 | |
| 3170 switch (data->actual) | |
| 3171 { | |
| 3172 case EOL_LF: return Fget_coding_system (Qconvert_eol_lf); | |
| 3173 case EOL_CRLF: return Fget_coding_system (Qconvert_eol_crlf); | |
| 3174 case EOL_CR: return Fget_coding_system (Qconvert_eol_cr); | |
| 3175 case EOL_AUTODETECT: return str->codesys; | |
| 2500 | 3176 default: ABORT (); return Qnil; |
| 771 | 3177 } |
| 3178 } | |
| 3179 | |
| 3180 | |
| 3181 /************************************************************************/ | |
| 3182 /* Undecided methods */ | |
| 3183 /************************************************************************/ | |
| 3184 | |
| 3185 /* Do autodetection. We can autodetect the EOL type only, the coding | |
| 3186 system only, or both. We only do autodetection when decoding; when | |
| 3187 encoding, we just pass the data through. | |
| 3188 | |
| 3189 When doing just EOL detection, a coding system can be specified; if so, | |
| 3190 we will decode this data through the coding system before doing EOL | |
| 3191 detection. The reason for specifying this is so that | |
| 3192 canonicalize-after-coding works: We will canonicalize the specified | |
| 3193 coding system into the appropriate EOL type. When doing both coding and | |
| 3194 EOL detection, we do similar canonicalization, and also catch situations | |
| 3195 where the EOL type is overspecified, i.e. the detected coding system | |
| 3196 specifies an EOL type, and either switch to the equivalent | |
| 3197 non-EOL-processing coding system (if possible), or terminate EOL | |
| 3198 detection and use the specified EOL type. This prevents data from being | |
| 3199 EOL-processed twice. | |
| 3200 */ | |
| 3201 | |
| 3202 struct undecided_coding_system | |
| 3203 { | |
| 3204 int do_eol, do_coding; | |
| 3205 Lisp_Object cs; | |
| 3206 }; | |
| 3207 | |
| 3208 struct undecided_coding_stream | |
| 3209 { | |
| 3210 Lisp_Object actual; | |
| 3211 /* Either 2 or 3 lstreams here; see undecided_convert */ | |
| 3212 struct chain_coding_stream c; | |
| 3213 | |
| 3214 struct detection_state *st; | |
| 3215 }; | |
| 3216 | |
| 1204 | 3217 static const struct memory_description undecided_coding_system_description[] = { |
| 3218 { XD_LISP_OBJECT, offsetof (struct undecided_coding_system, cs) }, | |
| 771 | 3219 { XD_END } |
| 3220 }; | |
| 3221 | |
| 1204 | 3222 static const struct memory_description undecided_coding_stream_description_1 [] = { |
| 3223 { XD_LISP_OBJECT, offsetof (struct undecided_coding_stream, actual) }, | |
| 2367 | 3224 { XD_BLOCK_ARRAY, offsetof (struct undecided_coding_stream, c), |
| 2551 | 3225 1, { &chain_coding_stream_description } }, |
| 1204 | 3226 { XD_END } |
| 3227 }; | |
| 3228 | |
| 3229 const struct sized_memory_description undecided_coding_stream_description = { | |
| 3230 sizeof (struct undecided_coding_stream), undecided_coding_stream_description_1 | |
| 3231 }; | |
| 3232 | |
| 3233 DEFINE_CODING_SYSTEM_TYPE_WITH_DATA (undecided); | |
| 3234 | |
| 771 | 3235 static void |
| 3236 undecided_init (Lisp_Object codesys) | |
| 3237 { | |
| 3238 struct undecided_coding_system *data = | |
| 3239 XCODING_SYSTEM_TYPE_DATA (codesys, undecided); | |
| 3240 | |
| 3241 data->cs = Qnil; | |
| 3242 } | |
| 3243 | |
| 3244 static void | |
| 3245 undecided_mark (Lisp_Object codesys) | |
| 3246 { | |
| 3247 struct undecided_coding_system *data = | |
| 3248 XCODING_SYSTEM_TYPE_DATA (codesys, undecided); | |
| 3249 | |
| 3250 mark_object (data->cs); | |
| 3251 } | |
| 3252 | |
| 3253 static void | |
| 3254 undecided_print (Lisp_Object cs, Lisp_Object printcharfun, int escapeflag) | |
| 3255 { | |
| 3256 struct undecided_coding_system *data = | |
| 3257 XCODING_SYSTEM_TYPE_DATA (cs, undecided); | |
| 3258 int need_space = 0; | |
| 3259 | |
|
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diff
changeset
|
3260 write_ascstring (printcharfun, "("); |
| 771 | 3261 if (data->do_eol) |
| 3262 { | |
|
4952
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
3263 write_ascstring (printcharfun, "do-eol"); |
| 771 | 3264 need_space = 1; |
| 3265 } | |
| 3266 if (data->do_coding) | |
| 3267 { | |
| 3268 if (need_space) | |
|
4952
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
3269 write_ascstring (printcharfun, " "); |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
3270 write_ascstring (printcharfun, "do-coding"); |
| 771 | 3271 need_space = 1; |
| 3272 } | |
| 3273 if (!NILP (data->cs)) | |
| 3274 { | |
| 3275 if (need_space) | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
3276 write_ascstring (printcharfun, " "); |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
3277 write_ascstring (printcharfun, "coding-system="); |
| 771 | 3278 print_coding_system_in_print_method (data->cs, printcharfun, escapeflag); |
| 3279 } | |
|
4952
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Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
3280 write_ascstring (printcharfun, ")"); |
| 771 | 3281 } |
| 3282 | |
| 3283 static void | |
| 3284 undecided_mark_coding_stream (struct coding_stream *str) | |
| 3285 { | |
| 1204 | 3286 mark_object (CODING_STREAM_TYPE_DATA (str, undecided)->actual); |
| 771 | 3287 chain_mark_coding_stream_1 (&CODING_STREAM_TYPE_DATA (str, undecided)->c); |
| 3288 } | |
| 3289 | |
| 3290 static int | |
| 3291 undecided_putprop (Lisp_Object codesys, Lisp_Object key, Lisp_Object value) | |
| 3292 { | |
| 3293 struct undecided_coding_system *data = | |
| 3294 XCODING_SYSTEM_TYPE_DATA (codesys, undecided); | |
| 3295 | |
| 3296 if (EQ (key, Qdo_eol)) | |
| 3297 data->do_eol = 1; | |
| 3298 else if (EQ (key, Qdo_coding)) | |
| 3299 data->do_coding = 1; | |
| 3300 else if (EQ (key, Qcoding_system)) | |
| 3301 data->cs = get_coding_system_for_text_file (value, 0); | |
| 3302 else | |
| 3303 return 0; | |
| 3304 return 1; | |
| 3305 } | |
| 3306 | |
| 3307 static Lisp_Object | |
| 3308 undecided_getprop (Lisp_Object codesys, Lisp_Object prop) | |
| 3309 { | |
| 3310 struct undecided_coding_system *data = | |
| 3311 XCODING_SYSTEM_TYPE_DATA (codesys, undecided); | |
| 3312 | |
| 3313 if (EQ (prop, Qdo_eol)) | |
| 3314 return data->do_eol ? Qt : Qnil; | |
| 3315 if (EQ (prop, Qdo_coding)) | |
| 3316 return data->do_coding ? Qt : Qnil; | |
| 3317 if (EQ (prop, Qcoding_system)) | |
| 3318 return data->cs; | |
| 3319 return Qunbound; | |
| 3320 } | |
| 3321 | |
| 3322 static struct detection_state * | |
| 3323 allocate_detection_state (void) | |
| 3324 { | |
| 3325 int i; | |
| 3326 Bytecount size = MAX_ALIGN_SIZE (sizeof (struct detection_state)); | |
| 3327 struct detection_state *block; | |
| 3328 | |
| 3329 for (i = 0; i < coding_detector_count; i++) | |
| 3330 size += MAX_ALIGN_SIZE (Dynarr_at (all_coding_detectors, i).data_size); | |
| 3331 | |
| 3332 block = (struct detection_state *) xmalloc_and_zero (size); | |
| 3333 | |
| 3334 size = MAX_ALIGN_SIZE (sizeof (struct detection_state)); | |
| 3335 for (i = 0; i < coding_detector_count; i++) | |
| 3336 { | |
| 3337 block->data_offset[i] = size; | |
| 3338 size += MAX_ALIGN_SIZE (Dynarr_at (all_coding_detectors, i).data_size); | |
| 3339 } | |
| 3340 | |
| 3341 return block; | |
| 3342 } | |
| 3343 | |
| 3344 static void | |
| 3345 free_detection_state (struct detection_state *st) | |
| 3346 { | |
| 3347 int i; | |
| 3348 | |
| 3349 for (i = 0; i < coding_detector_count; i++) | |
| 3350 { | |
| 3351 if (Dynarr_at (all_coding_detectors, i).finalize_detection_state_method) | |
| 3352 Dynarr_at (all_coding_detectors, i).finalize_detection_state_method | |
| 3353 (st); | |
| 3354 } | |
| 3355 | |
|
4976
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Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3356 xfree (st); |
| 771 | 3357 } |
| 3358 | |
| 3359 static int | |
| 3360 coding_category_symbol_to_id (Lisp_Object symbol) | |
| 428 | 3361 { |
| 3362 int i; | |
| 3363 | |
| 3364 CHECK_SYMBOL (symbol); | |
| 771 | 3365 for (i = 0; i < coding_detector_count; i++) |
| 3366 { | |
| 3367 detector_category_dynarr *cats = | |
| 3368 Dynarr_at (all_coding_detectors, i).cats; | |
| 3369 int j; | |
| 3370 | |
| 3371 for (j = 0; j < Dynarr_length (cats); j++) | |
| 3372 if (EQ (Dynarr_at (cats, j).sym, symbol)) | |
| 3373 return Dynarr_at (cats, j).id; | |
| 3374 } | |
| 3375 | |
| 563 | 3376 invalid_constant ("Unrecognized coding category", symbol); |
| 1204 | 3377 RETURN_NOT_REACHED (0); |
| 428 | 3378 } |
| 3379 | |
| 771 | 3380 static Lisp_Object |
| 3381 coding_category_id_to_symbol (int id) | |
| 428 | 3382 { |
| 3383 int i; | |
| 771 | 3384 |
| 3385 for (i = 0; i < coding_detector_count; i++) | |
| 3386 { | |
| 3387 detector_category_dynarr *cats = | |
| 3388 Dynarr_at (all_coding_detectors, i).cats; | |
| 3389 int j; | |
| 3390 | |
| 3391 for (j = 0; j < Dynarr_length (cats); j++) | |
| 3392 if (id == Dynarr_at (cats, j).id) | |
| 3393 return Dynarr_at (cats, j).sym; | |
| 3394 } | |
| 3395 | |
| 2500 | 3396 ABORT (); |
| 771 | 3397 return Qnil; /* (usually) not reached */ |
| 428 | 3398 } |
| 3399 | |
| 771 | 3400 static Lisp_Object |
| 3401 detection_result_number_to_symbol (enum detection_result result) | |
| 428 | 3402 { |
| 1494 | 3403 /* let compiler warn if not all enumerators are handled */ |
| 3404 switch (result) { | |
| 3405 #define FROB(sym, num) case num: return (sym) | |
| 771 | 3406 FROB (Qnear_certainty, DET_NEAR_CERTAINTY); |
| 3407 FROB (Qquite_probable, DET_QUITE_PROBABLE); | |
| 3408 FROB (Qsomewhat_likely, DET_SOMEWHAT_LIKELY); | |
| 1494 | 3409 FROB (Qslightly_likely, DET_SLIGHTLY_LIKELY); |
| 771 | 3410 FROB (Qas_likely_as_unlikely, DET_AS_LIKELY_AS_UNLIKELY); |
| 3411 FROB (Qsomewhat_unlikely, DET_SOMEWHAT_UNLIKELY); | |
| 3412 FROB (Qquite_improbable, DET_QUITE_IMPROBABLE); | |
| 3413 FROB (Qnearly_impossible, DET_NEARLY_IMPOSSIBLE); | |
| 3414 #undef FROB | |
| 1494 | 3415 } |
| 771 | 3416 |
| 2500 | 3417 ABORT (); |
| 771 | 3418 return Qnil; /* (usually) not reached */ |
| 3419 } | |
| 3420 | |
| 778 | 3421 #if 0 /* not used */ |
| 771 | 3422 static enum detection_result |
| 3423 detection_result_symbol_to_number (Lisp_Object symbol) | |
| 3424 { | |
| 1494 | 3425 /* using switch here would be bad style, and doesn't help */ |
| 771 | 3426 #define FROB(sym, num) if (EQ (symbol, sym)) return (num) |
| 3427 FROB (Qnear_certainty, DET_NEAR_CERTAINTY); | |
| 3428 FROB (Qquite_probable, DET_QUITE_PROBABLE); | |
| 3429 FROB (Qsomewhat_likely, DET_SOMEWHAT_LIKELY); | |
| 1494 | 3430 FROB (Qslightly_likely, DET_SLIGHTLY_LIKELY); |
| 771 | 3431 FROB (Qas_likely_as_unlikely, DET_AS_LIKELY_AS_UNLIKELY); |
| 3432 FROB (Qsomewhat_unlikely, DET_SOMEWHAT_UNLIKELY); | |
| 3433 FROB (Qquite_improbable, DET_QUITE_IMPROBABLE); | |
| 3434 FROB (Qnearly_impossible, DET_NEARLY_IMPOSSIBLE); | |
| 3435 #undef FROB | |
| 3436 | |
| 3437 invalid_constant ("Unrecognized detection result", symbol); | |
| 3438 return ((enum detection_result) 0); /* not reached */ | |
| 3439 } | |
| 778 | 3440 #endif /* 0 */ |
| 771 | 3441 |
| 3442 /* Set all detection results for a given detector to a specified value. */ | |
| 3443 void | |
| 3444 set_detection_results (struct detection_state *st, int detector, int given) | |
| 3445 { | |
| 3446 detector_category_dynarr *cats = | |
| 3447 Dynarr_at (all_coding_detectors, detector).cats; | |
| 3448 int i; | |
| 3449 | |
| 3450 for (i = 0; i < Dynarr_length (cats); i++) | |
| 3451 st->categories[Dynarr_at (cats, i).id] = given; | |
| 3452 } | |
| 428 | 3453 |
| 3454 static int | |
| 3455 acceptable_control_char_p (int c) | |
| 3456 { | |
| 3457 switch (c) | |
| 3458 { | |
| 3459 /* Allow and ignore control characters that you might | |
| 3460 reasonably see in a text file */ | |
| 3461 case '\r': | |
| 3462 case '\n': | |
| 3463 case '\t': | |
| 3464 case 7: /* bell */ | |
| 3465 case 8: /* backspace */ | |
| 3466 case 11: /* vertical tab */ | |
| 3467 case 12: /* form feed */ | |
| 3468 case 26: /* MS-DOS C-z junk */ | |
| 3469 case 31: /* '^_' -- for info */ | |
| 3470 return 1; | |
| 3471 default: | |
| 3472 return 0; | |
| 3473 } | |
| 3474 } | |
| 3475 | |
| 771 | 3476 #ifdef DEBUG_XEMACS |
| 3477 | |
| 3478 static UExtbyte | |
| 3479 hex_digit_to_char (int digit) | |
| 428 | 3480 { |
| 771 | 3481 if (digit < 10) |
| 3482 return digit + '0'; | |
| 3483 else | |
| 3484 return digit - 10 + 'A'; | |
| 428 | 3485 } |
| 3486 | |
| 771 | 3487 static void |
| 3488 output_bytes_in_ascii_and_hex (const UExtbyte *src, Bytecount n) | |
| 428 | 3489 { |
| 3425 | 3490 Extbyte *ascii = alloca_array (Extbyte, n + 1); |
| 3491 Extbyte *hex = alloca_array (Extbyte, 3 * n + 1); | |
| 771 | 3492 int i; |
| 3413 | 3493 DECLARE_EISTRING (eistr_ascii); |
| 3494 DECLARE_EISTRING (eistr_hex); | |
| 771 | 3495 |
| 3496 for (i = 0; i < n; i++) | |
| 428 | 3497 { |
| 3425 | 3498 Extbyte c = src[i]; |
| 771 | 3499 if (c < 0x20) |
| 3500 ascii[i] = '.'; | |
| 428 | 3501 else |
| 771 | 3502 ascii[i] = c; |
| 3503 hex[3 * i] = hex_digit_to_char (c >> 4); | |
| 3504 hex[3 * i + 1] = hex_digit_to_char (c & 0xF); | |
| 3505 hex[3 * i + 2] = ' '; | |
| 428 | 3506 } |
| 771 | 3507 ascii[i] = '\0'; |
| 3508 hex[3 * i - 1] = '\0'; | |
| 3413 | 3509 |
| 3510 eicpy_ext(eistr_hex, hex, Qbinary); | |
| 3511 eicpy_ext(eistr_ascii, ascii, Qbinary); | |
| 3512 | |
| 3425 | 3513 stderr_out ("%s %s", eidata(eistr_ascii), eidata(eistr_hex)); |
| 428 | 3514 } |
| 3515 | |
| 771 | 3516 #endif /* DEBUG_XEMACS */ |
| 3517 | |
| 3518 /* Attempt to determine the encoding of the given text. Before calling | |
| 3519 this function for the first time, you must zero out the detection state. | |
| 428 | 3520 |
| 3521 Returns: | |
| 3522 | |
| 771 | 3523 0 == keep going |
| 3524 1 == stop | |
| 428 | 3525 */ |
| 3526 | |
| 3527 static int | |
| 771 | 3528 detect_coding_type (struct detection_state *st, const UExtbyte *src, |
| 3529 Bytecount n) | |
| 428 | 3530 { |
| 771 | 3531 Bytecount n2 = n; |
| 3532 const UExtbyte *src2 = src; | |
| 3533 int i; | |
| 3534 | |
| 3535 #ifdef DEBUG_XEMACS | |
| 3536 if (!NILP (Vdebug_coding_detection)) | |
| 3537 { | |
| 3538 int bytes = min (16, n); | |
| 3539 stderr_out ("detect_coding_type: processing %ld bytes\n", n); | |
| 3540 stderr_out ("First %d: ", bytes); | |
| 3541 output_bytes_in_ascii_and_hex (src, bytes); | |
| 3542 stderr_out ("\nLast %d: ", bytes); | |
| 3543 output_bytes_in_ascii_and_hex (src + n - bytes, bytes); | |
| 3544 stderr_out ("\n"); | |
| 3545 } | |
| 3546 #endif /* DEBUG_XEMACS */ | |
| 428 | 3547 if (!st->seen_non_ascii) |
| 3548 { | |
| 771 | 3549 for (; n2; n2--, src2++) |
| 428 | 3550 { |
| 771 | 3551 UExtbyte c = *src2; |
| 428 | 3552 if ((c < 0x20 && !acceptable_control_char_p (c)) || c >= 0x80) |
| 3553 { | |
| 3554 st->seen_non_ascii = 1; | |
| 3555 break; | |
| 3556 } | |
| 3557 } | |
| 3558 } | |
| 3559 | |
| 771 | 3560 for (i = 0; i < coding_detector_count; i++) |
| 3561 Dynarr_at (all_coding_detectors, i).detect_method (st, src, n); | |
| 3562 | |
| 3563 st->bytes_seen += n; | |
| 3564 | |
| 3565 #ifdef DEBUG_XEMACS | |
| 3566 if (!NILP (Vdebug_coding_detection)) | |
| 3567 { | |
| 3568 stderr_out ("seen_non_ascii: %d\n", st->seen_non_ascii); | |
| 1494 | 3569 if (coding_detector_category_count <= 0) |
| 3570 stderr_out ("found %d detector categories\n", | |
| 3571 coding_detector_category_count); | |
| 771 | 3572 for (i = 0; i < coding_detector_category_count; i++) |
| 3573 stderr_out_lisp | |
| 3574 ("%s: %s\n", | |
| 3575 2, | |
| 3576 coding_category_id_to_symbol (i), | |
| 3577 detection_result_number_to_symbol ((enum detection_result) | |
| 3578 st->categories[i])); | |
| 3579 } | |
| 3580 #endif /* DEBUG_XEMACS */ | |
| 3581 | |
| 3582 { | |
| 3583 int not_unlikely = 0; | |
| 3584 int retval; | |
| 3585 | |
| 3586 for (i = 0; i < coding_detector_category_count; i++) | |
| 3587 if (st->categories[i] >= 0) | |
| 3588 not_unlikely++; | |
| 3589 | |
| 3590 retval = (not_unlikely <= 1 | |
| 3591 #if 0 /* this is bogus */ | |
| 3592 || st->bytes_seen >= MAX_BYTES_PROCESSED_FOR_DETECTION | |
| 428 | 3593 #endif |
| 771 | 3594 ); |
| 3595 | |
| 3596 #ifdef DEBUG_XEMACS | |
| 3597 if (!NILP (Vdebug_coding_detection)) | |
| 3598 stderr_out ("detect_coding_type: returning %d (%s)\n", | |
| 3599 retval, retval ? "stop" : "keep going"); | |
| 3600 #endif /* DEBUG_XEMACS */ | |
| 3601 | |
| 3602 return retval; | |
| 428 | 3603 } |
| 3604 } | |
| 3605 | |
| 3606 static Lisp_Object | |
| 771 | 3607 detected_coding_system (struct detection_state *st) |
| 428 | 3608 { |
| 771 | 3609 int i; |
| 3610 int even = 1; | |
| 3611 | |
| 3612 if (st->seen_non_ascii) | |
| 3613 { | |
| 3614 for (i = 0; i < coding_detector_category_count; i++) | |
| 3615 if (st->categories[i] != DET_AS_LIKELY_AS_UNLIKELY) | |
| 3616 { | |
| 3617 even = 0; | |
| 3618 break; | |
| 3619 } | |
| 3620 } | |
| 3621 | |
| 3622 /* #### Here we are ignoring the results of detection when it's all | |
| 3623 ASCII. This is obviously a bad thing. But we need to fix up the | |
| 3624 existing detection methods somewhat before we can switch. */ | |
| 3625 if (even) | |
| 428 | 3626 { |
| 3627 /* If the file was entirely or basically ASCII, use the | |
| 3628 default value of `buffer-file-coding-system'. */ | |
| 3629 Lisp_Object retval = | |
| 3630 XBUFFER (Vbuffer_defaults)->buffer_file_coding_system; | |
| 3631 if (!NILP (retval)) | |
| 3632 { | |
| 771 | 3633 retval = find_coding_system_for_text_file (retval, 0); |
| 428 | 3634 if (NILP (retval)) |
| 3635 { | |
| 3636 warn_when_safe | |
| 3637 (Qbad_variable, Qwarning, | |
| 3638 "Invalid `default-buffer-file-coding-system', set to nil"); | |
| 3639 XBUFFER (Vbuffer_defaults)->buffer_file_coding_system = Qnil; | |
| 3640 } | |
| 3641 } | |
| 3642 if (NILP (retval)) | |
| 4100 | 3643 retval = Fget_coding_system (Qbinary); |
| 428 | 3644 return retval; |
| 3645 } | |
| 3646 else | |
| 3647 { | |
| 771 | 3648 int likelihood; |
| 3649 Lisp_Object retval = Qnil; | |
| 3650 | |
| 3651 /* Look through the coding categories first by likelihood and then by | |
| 3652 priority and find the first one that is allowed. */ | |
| 3653 | |
| 3654 for (likelihood = DET_HIGHEST; likelihood >= DET_LOWEST; likelihood--) | |
| 428 | 3655 { |
| 771 | 3656 for (i = 0; i < coding_detector_category_count; i++) |
| 3657 { | |
| 3658 int cat = coding_category_by_priority[i]; | |
| 3659 if (st->categories[cat] == likelihood && | |
| 3660 !NILP (coding_category_system[cat])) | |
| 3661 { | |
| 3662 retval = (get_coding_system_for_text_file | |
| 3663 (coding_category_system[cat], 0)); | |
| 3664 if (likelihood < DET_AS_LIKELY_AS_UNLIKELY) | |
| 3665 warn_when_safe_lispobj | |
| 3666 (intern ("detection"), | |
| 793 | 3667 Qwarning, |
| 771 | 3668 emacs_sprintf_string_lisp |
| 3669 ( | |
| 3670 "Detected coding %s is unlikely to be correct (likelihood == `%s')", | |
| 3671 Qnil, 2, XCODING_SYSTEM_NAME (retval), | |
| 3672 detection_result_number_to_symbol | |
| 3673 ((enum detection_result) likelihood))); | |
| 3674 return retval; | |
| 3675 } | |
| 3676 } | |
| 428 | 3677 } |
| 771 | 3678 |
| 3679 return Fget_coding_system (Qraw_text); | |
| 428 | 3680 } |
| 3681 } | |
| 3682 | |
| 1347 | 3683 /* Look for a coding system in the string (skipping over leading |
| 3684 blanks). If found, return it, otherwise nil. */ | |
| 3685 | |
| 3686 static Lisp_Object | |
| 2531 | 3687 snarf_coding_system (const UExtbyte *p, Bytecount len) |
| 1347 | 3688 { |
| 3689 Bytecount n; | |
| 2531 | 3690 UExtbyte *name; |
| 1347 | 3691 |
| 3692 while (*p == ' ' || *p == '\t') p++, len--; | |
| 3693 len = min (len, 1000); | |
| 3694 name = alloca_ibytes (len + 1); | |
| 3695 memcpy (name, p, len); | |
| 3696 name[len] = '\0'; | |
| 3697 | |
| 3698 /* Get coding system name */ | |
| 3699 /* Characters valid in a MIME charset name (rfc 1521), | |
| 3700 and in a Lisp symbol name. */ | |
| 3701 n = qxestrspn (name, | |
| 3702 "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
| 3703 "abcdefghijklmnopqrstuvwxyz" | |
| 3704 "0123456789" | |
| 3705 "!$%&*+-.^_{|}~"); | |
| 3706 if (n > 0) | |
| 3707 { | |
| 3708 name[n] = '\0'; | |
|
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Ben Wing <ben@xemacs.org>
parents:
4952
diff
changeset
|
3709 /* This call to intern_istring() is OK because we already verified that |
| 2531 | 3710 there are only ASCII characters in the string */ |
|
4953
304aebb79cd3
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Ben Wing <ben@xemacs.org>
parents:
4952
diff
changeset
|
3711 return find_coding_system_for_text_file (intern_istring ((Ibyte *) name), 0); |
| 1347 | 3712 } |
| 3713 | |
| 3714 return Qnil; | |
| 3715 } | |
| 3716 | |
| 428 | 3717 /* Given a seekable read stream and potential coding system and EOL type |
| 3718 as specified, do any autodetection that is called for. If the | |
| 3719 coding system and/or EOL type are not `autodetect', they will be left | |
| 3720 alone; but this function will never return an autodetect coding system | |
| 3721 or EOL type. | |
| 3722 | |
| 3723 This function does not automatically fetch subsidiary coding systems; | |
| 3724 that should be unnecessary with the explicit eol-type argument. */ | |
| 3725 | |
| 3726 #define LENGTH(string_constant) (sizeof (string_constant) - 1) | |
| 3727 | |
| 771 | 3728 static Lisp_Object |
| 3729 unwind_free_detection_state (Lisp_Object opaque) | |
| 3730 { | |
| 3731 struct detection_state *st = | |
| 3732 (struct detection_state *) get_opaque_ptr (opaque); | |
| 3733 free_detection_state (st); | |
| 3734 free_opaque_ptr (opaque); | |
| 3735 return Qnil; | |
| 3736 } | |
| 3737 | |
| 1347 | 3738 /* #### This duplicates code in `find-coding-system-magic-cookie-in-file' |
| 3739 in files.el. Look into combining them. */ | |
| 3740 | |
| 771 | 3741 static Lisp_Object |
| 3742 look_for_coding_system_magic_cookie (const UExtbyte *data, Bytecount len) | |
| 428 | 3743 { |
| 771 | 3744 const UExtbyte *p; |
| 3745 const UExtbyte *scan_end; | |
| 2531 | 3746 Bytecount cookie_len; |
| 771 | 3747 |
| 3748 /* Look for initial "-*-"; mode line prefix */ | |
| 3749 for (p = data, | |
| 3750 scan_end = data + len - LENGTH ("-*-coding:?-*-"); | |
| 3751 p <= scan_end | |
| 3752 && *p != '\n' | |
| 3753 && *p != '\r'; | |
| 3754 p++) | |
| 3755 if (*p == '-' && *(p+1) == '*' && *(p+2) == '-') | |
| 3756 { | |
| 3757 const UExtbyte *local_vars_beg = p + 3; | |
| 3758 /* Look for final "-*-"; mode line suffix */ | |
| 3759 for (p = local_vars_beg, | |
| 3760 scan_end = data + len - LENGTH ("-*-"); | |
| 3761 p <= scan_end | |
| 428 | 3762 && *p != '\n' |
| 3763 && *p != '\r'; | |
| 771 | 3764 p++) |
| 3765 if (*p == '-' && *(p+1) == '*' && *(p+2) == '-') | |
| 3766 { | |
| 3767 const UExtbyte *suffix = p; | |
| 3768 /* Look for "coding:" */ | |
| 3769 for (p = local_vars_beg, | |
| 3770 scan_end = suffix - LENGTH ("coding:?"); | |
| 3771 p <= scan_end; | |
| 3772 p++) | |
| 3773 if (memcmp ("coding:", p, LENGTH ("coding:")) == 0 | |
| 3774 && (p == local_vars_beg | |
| 3775 || (*(p-1) == ' ' || | |
| 3776 *(p-1) == '\t' || | |
| 3777 *(p-1) == ';'))) | |
| 3778 { | |
| 3779 p += LENGTH ("coding:"); | |
| 1347 | 3780 return snarf_coding_system (p, suffix - p); |
| 771 | 3781 break; |
| 3782 } | |
| 3783 break; | |
| 3784 } | |
| 3785 break; | |
| 3786 } | |
| 3787 | |
| 2531 | 3788 /* Look for ;;;###coding system */ |
| 3789 | |
| 3790 cookie_len = LENGTH (";;;###coding system: "); | |
| 3791 | |
| 3792 for (p = data, | |
| 3793 scan_end = data + len - cookie_len; | |
| 3794 p <= scan_end; | |
| 3795 p++) | |
| 1347 | 3796 { |
| 2531 | 3797 if (*p == ';' && !memcmp (p, ";;;###coding system: ", cookie_len)) |
| 3798 { | |
| 3799 const UExtbyte *suffix; | |
| 3800 | |
| 3801 p += cookie_len; | |
| 3802 suffix = p; | |
| 3803 while (suffix < scan_end && !isspace (*suffix)) | |
| 3804 suffix++; | |
| 3805 return snarf_coding_system (p, suffix - p); | |
| 3806 } | |
| 1347 | 3807 } |
| 3808 | |
| 3809 return Qnil; | |
| 771 | 3810 } |
| 3811 | |
| 3812 static Lisp_Object | |
| 3813 determine_real_coding_system (Lstream *stream) | |
| 3814 { | |
| 3815 struct detection_state *st = allocate_detection_state (); | |
| 3816 int depth = record_unwind_protect (unwind_free_detection_state, | |
| 3817 make_opaque_ptr (st)); | |
| 3818 UExtbyte buf[4096]; | |
| 3819 Bytecount nread = Lstream_read (stream, buf, sizeof (buf)); | |
| 3820 Lisp_Object coding_system = look_for_coding_system_magic_cookie (buf, nread); | |
| 3821 | |
| 3822 if (NILP (coding_system)) | |
| 3823 { | |
| 3824 while (1) | |
| 3825 { | |
| 3826 if (detect_coding_type (st, buf, nread)) | |
| 428 | 3827 break; |
| 771 | 3828 nread = Lstream_read (stream, buf, sizeof (buf)); |
| 3829 if (nread == 0) | |
| 3830 break; | |
| 428 | 3831 } |
| 771 | 3832 |
| 3833 coding_system = detected_coding_system (st); | |
| 428 | 3834 } |
| 3835 | |
| 3836 Lstream_rewind (stream); | |
| 771 | 3837 |
| 3838 unbind_to (depth); | |
| 3839 return coding_system; | |
| 3840 } | |
| 3841 | |
| 3842 static void | |
| 3843 undecided_init_coding_stream (struct coding_stream *str) | |
| 3844 { | |
| 3845 struct undecided_coding_stream *data = | |
| 3846 CODING_STREAM_TYPE_DATA (str, undecided); | |
| 3847 struct undecided_coding_system *csdata = | |
| 3848 XCODING_SYSTEM_TYPE_DATA (str->codesys, undecided); | |
| 3849 | |
| 3850 data->actual = Qnil; | |
| 3851 | |
| 3852 if (str->direction == CODING_DECODE) | |
| 3853 { | |
| 3854 Lstream *lst = str->other_end; | |
| 3855 | |
| 3856 if ((lst->flags & LSTREAM_FL_READ) && | |
| 3857 Lstream_seekable_p (lst) && | |
| 3858 csdata->do_coding) | |
| 3859 /* We can determine the coding system now. */ | |
| 3860 data->actual = determine_real_coding_system (lst); | |
| 3861 } | |
| 1494 | 3862 |
| 3863 #ifdef DEBUG_XEMACS | |
| 3864 if (!NILP (Vdebug_coding_detection)) | |
| 3865 stderr_out_lisp ("detected coding system: %s\n", 1, data->actual); | |
| 3866 #endif /* DEBUG_XEMACS */ | |
| 771 | 3867 } |
| 3868 | |
| 3869 static void | |
| 3870 undecided_rewind_coding_stream (struct coding_stream *str) | |
| 3871 { | |
| 3872 chain_rewind_coding_stream_1 (&CODING_STREAM_TYPE_DATA (str, undecided)->c); | |
| 3873 } | |
| 3874 | |
| 3875 static void | |
| 3876 undecided_finalize_coding_stream (struct coding_stream *str) | |
| 3877 { | |
| 3878 struct undecided_coding_stream *data = | |
| 3879 CODING_STREAM_TYPE_DATA (str, undecided); | |
| 3880 | |
| 3881 chain_finalize_coding_stream_1 | |
| 3882 (&CODING_STREAM_TYPE_DATA (str, undecided)->c); | |
| 3883 if (data->st) | |
| 3884 free_detection_state (data->st); | |
| 3885 } | |
| 3886 | |
| 3887 static Lisp_Object | |
| 3888 undecided_canonicalize (Lisp_Object codesys) | |
| 3889 { | |
| 3890 struct undecided_coding_system *csdata = | |
| 3891 XCODING_SYSTEM_TYPE_DATA (codesys, undecided); | |
| 3892 if (!csdata->do_eol && !csdata->do_coding) | |
| 3893 return NILP (csdata->cs) ? Fget_coding_system (Qbinary) : csdata->cs; | |
| 3894 if (csdata->do_eol && !csdata->do_coding && NILP (csdata->cs)) | |
| 3895 return Fget_coding_system (Qconvert_eol_autodetect); | |
| 3896 return codesys; | |
| 3897 } | |
| 3898 | |
| 3899 static Bytecount | |
| 3900 undecided_convert (struct coding_stream *str, const UExtbyte *src, | |
| 3901 unsigned_char_dynarr *dst, Bytecount n) | |
| 3902 { | |
| 3903 int first_time = 0; | |
| 3904 | |
| 3905 if (str->direction == CODING_DECODE) | |
| 3906 { | |
| 3907 /* At this point, we have only the following possibilities: | |
| 3908 | |
| 3909 do_eol && do_coding | |
| 3910 do_coding only | |
| 3911 do_eol only and a coding system was specified | |
| 3912 | |
| 3913 Other possibilities are removed during undecided_canonicalize. | |
| 3914 | |
| 3915 Therefore, our substreams are either | |
| 3916 | |
| 3917 lstream_coding -> lstream_dynarr, or | |
| 3918 lstream_coding -> lstream_eol -> lstream_dynarr. | |
| 3919 */ | |
| 3920 struct undecided_coding_system *csdata = | |
| 3921 XCODING_SYSTEM_TYPE_DATA (str->codesys, undecided); | |
| 3922 struct undecided_coding_stream *data = | |
| 3923 CODING_STREAM_TYPE_DATA (str, undecided); | |
| 3924 | |
| 3925 if (str->eof) | |
| 3926 { | |
| 3927 /* Each will close the next. We need to close now because more | |
| 3928 data may be generated. */ | |
| 3929 if (data->c.initted) | |
| 3930 Lstream_close (XLSTREAM (data->c.lstreams[0])); | |
| 3931 return n; | |
| 3932 } | |
| 3933 | |
| 3934 if (!data->c.initted) | |
| 3935 { | |
| 3936 data->c.lstream_count = csdata->do_eol ? 3 : 2; | |
| 3937 data->c.lstreams = xnew_array (Lisp_Object, data->c.lstream_count); | |
| 3938 | |
| 3939 data->c.lstreams[data->c.lstream_count - 1] = | |
| 3940 make_dynarr_output_stream (dst); | |
| 3941 Lstream_set_buffering | |
| 3942 (XLSTREAM (data->c.lstreams[data->c.lstream_count - 1]), | |
| 3943 LSTREAM_UNBUFFERED, 0); | |
| 3944 if (csdata->do_eol) | |
| 3945 { | |
| 3946 data->c.lstreams[1] = | |
| 3947 make_coding_output_stream | |
| 3948 (XLSTREAM (data->c.lstreams[data->c.lstream_count - 1]), | |
| 3949 Fget_coding_system (Qconvert_eol_autodetect), | |
| 800 | 3950 CODING_DECODE, 0); |
| 771 | 3951 Lstream_set_buffering |
| 3952 (XLSTREAM (data->c.lstreams[1]), | |
| 3953 LSTREAM_UNBUFFERED, 0); | |
| 3954 } | |
| 3955 | |
| 3956 data->c.lstreams[0] = | |
| 3957 make_coding_output_stream | |
| 3958 (XLSTREAM (data->c.lstreams[1]), | |
| 3959 /* Substitute binary if we need to detect the encoding */ | |
| 3960 csdata->do_coding ? Qbinary : csdata->cs, | |
| 800 | 3961 CODING_DECODE, 0); |
| 771 | 3962 Lstream_set_buffering (XLSTREAM (data->c.lstreams[0]), |
| 3963 LSTREAM_UNBUFFERED, 0); | |
| 3964 | |
| 3965 first_time = 1; | |
| 3966 data->c.initted = 1; | |
| 3967 } | |
| 3968 | |
| 3969 /* If necessary, do encoding-detection now. We do this when we're a | |
| 3970 writing stream or a non-seekable reading stream, meaning that we | |
| 3971 can't just process the whole input, rewind, and start over. */ | |
| 3972 | |
| 3973 if (csdata->do_coding) | |
| 3974 { | |
| 3975 int actual_was_nil = NILP (data->actual); | |
| 3976 if (NILP (data->actual)) | |
| 3977 { | |
| 3978 if (!data->st) | |
| 3979 data->st = allocate_detection_state (); | |
| 3980 if (first_time) | |
| 3981 /* #### This is cheesy. What we really ought to do is buffer | |
| 3982 up a certain minimum amount of data to get a better result. | |
| 3983 */ | |
| 3984 data->actual = look_for_coding_system_magic_cookie (src, n); | |
| 3985 if (NILP (data->actual)) | |
| 3986 { | |
| 3987 /* #### This is cheesy. What we really ought to do is buffer | |
| 3988 up a certain minimum amount of data so as to get a less | |
| 3989 random result when doing subprocess detection. */ | |
| 3990 detect_coding_type (data->st, src, n); | |
| 3991 data->actual = detected_coding_system (data->st); | |
| 4100 | 3992 /* kludge to prevent infinite recursion */ |
| 3993 if (XCODING_SYSTEM(data->actual)->methods->enumtype == undecided_coding_system) | |
| 3994 data->actual = Fget_coding_system (Qbinary); | |
| 771 | 3995 } |
| 3996 } | |
| 3997 /* We need to set the detected coding system if we actually have | |
| 3998 such a coding system but didn't before. That is the case | |
| 3999 either when we just detected it in the previous code or when | |
| 4000 it was detected during undecided_init_coding_stream(). We | |
| 4001 can check for that using first_time. */ | |
| 4002 if (!NILP (data->actual) && (actual_was_nil || first_time)) | |
| 4003 { | |
| 4004 /* If the detected coding system doesn't allow for EOL | |
| 4005 autodetection, try to get the equivalent that does; | |
| 4006 otherwise, disable EOL detection (overriding whatever | |
| 4007 may already have been detected). */ | |
| 4008 if (XCODING_SYSTEM_EOL_TYPE (data->actual) != EOL_AUTODETECT) | |
| 4009 { | |
| 4010 if (!NILP (XCODING_SYSTEM_SUBSIDIARY_PARENT (data->actual))) | |
| 4011 data->actual = | |
| 4012 XCODING_SYSTEM_SUBSIDIARY_PARENT (data->actual); | |
| 4013 else if (data->c.lstream_count == 3) | |
| 4014 set_coding_stream_coding_system | |
| 4015 (XLSTREAM (data->c.lstreams[1]), | |
| 4016 Fget_coding_system (Qidentity)); | |
| 4017 } | |
| 4018 set_coding_stream_coding_system | |
| 4019 (XLSTREAM (data->c.lstreams[0]), data->actual); | |
| 4020 } | |
| 4021 } | |
| 4022 | |
| 4023 if (Lstream_write (XLSTREAM (data->c.lstreams[0]), src, n) < 0) | |
| 4024 return -1; | |
| 4025 return n; | |
| 4026 } | |
| 4027 else | |
| 4028 return no_conversion_convert (str, src, dst, n); | |
| 4029 } | |
| 4030 | |
| 4031 static Lisp_Object | |
| 4032 undecided_canonicalize_after_coding (struct coding_stream *str) | |
| 4033 { | |
| 4034 struct undecided_coding_stream *data = | |
| 4035 CODING_STREAM_TYPE_DATA (str, undecided); | |
| 4036 Lisp_Object ret, eolret; | |
| 4037 | |
| 4038 if (str->direction == CODING_ENCODE) | |
| 4039 return str->codesys; | |
| 4040 | |
| 4041 if (!data->c.initted) | |
|
4647
e4ed58cb0e5b
Fix bugs with #'find-file, 0-length files, & coding-system-for-read specified.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4569
diff
changeset
|
4042 return str->codesys; |
| 771 | 4043 |
| 4044 ret = coding_stream_canonicalize_after_coding | |
| 4045 (XLSTREAM (data->c.lstreams[0])); | |
| 4046 if (NILP (ret)) | |
|
4647
e4ed58cb0e5b
Fix bugs with #'find-file, 0-length files, & coding-system-for-read specified.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4569
diff
changeset
|
4047 ret = str->codesys; |
| 771 | 4048 if (XCODING_SYSTEM_EOL_TYPE (ret) != EOL_AUTODETECT) |
| 4049 return ret; | |
| 4050 eolret = coding_stream_canonicalize_after_coding | |
| 4051 (XLSTREAM (data->c.lstreams[1])); | |
| 4052 if (!EQ (XCODING_SYSTEM_TYPE (eolret), Qconvert_eol)) | |
| 4053 return ret; | |
| 4054 return | |
| 4055 Fsubsidiary_coding_system (ret, Fcoding_system_property (eolret, | |
| 4056 Qsubtype)); | |
| 4057 } | |
| 4058 | |
| 4059 | |
| 4060 /************************************************************************/ | |
| 4061 /* Lisp interface: Coding category functions and detection */ | |
| 4062 /************************************************************************/ | |
| 4063 | |
| 4064 DEFUN ("coding-category-list", Fcoding_category_list, 0, 0, 0, /* | |
| 4065 Return a list of all recognized coding categories. | |
| 4066 */ | |
| 4067 ()) | |
| 4068 { | |
| 4069 int i; | |
| 4070 Lisp_Object list = Qnil; | |
| 4071 | |
| 4072 for (i = 0; i < coding_detector_count; i++) | |
| 4073 { | |
| 4074 detector_category_dynarr *cats = | |
| 4075 Dynarr_at (all_coding_detectors, i).cats; | |
| 4076 int j; | |
| 4077 | |
| 4078 for (j = 0; j < Dynarr_length (cats); j++) | |
| 4079 list = Fcons (Dynarr_at (cats, j).sym, list); | |
| 4080 } | |
| 4081 | |
| 4082 return Fnreverse (list); | |
| 4083 } | |
| 4084 | |
| 4085 DEFUN ("set-coding-priority-list", Fset_coding_priority_list, 1, 1, 0, /* | |
| 4086 Change the priority order of the coding categories. | |
| 4087 LIST should be list of coding categories, in descending order of | |
| 4088 priority. Unspecified coding categories will be lower in priority | |
| 4089 than all specified ones, in the same relative order they were in | |
| 4090 previously. | |
| 4091 */ | |
| 4092 (list)) | |
| 4093 { | |
| 4094 int *category_to_priority = | |
| 4095 alloca_array (int, coding_detector_category_count); | |
| 4096 int i, j; | |
| 4097 | |
| 4098 /* First generate a list that maps coding categories to priorities. */ | |
| 4099 | |
| 4100 for (i = 0; i < coding_detector_category_count; i++) | |
| 4101 category_to_priority[i] = -1; | |
| 4102 | |
| 4103 /* Highest priority comes from the specified list. */ | |
| 4104 i = 0; | |
| 2367 | 4105 { |
| 4106 EXTERNAL_LIST_LOOP_2 (elt, list) | |
| 4107 { | |
| 4108 int cat = coding_category_symbol_to_id (elt); | |
| 4109 | |
| 4110 if (category_to_priority[cat] >= 0) | |
| 4111 sferror ("Duplicate coding category in list", elt); | |
| 4112 category_to_priority[cat] = i++; | |
| 4113 } | |
| 4114 } | |
| 771 | 4115 |
| 4116 /* Now go through the existing categories by priority to retrieve | |
| 4117 the categories not yet specified and preserve their priority | |
| 4118 order. */ | |
| 4119 for (j = 0; j < coding_detector_category_count; j++) | |
| 4120 { | |
| 4121 int cat = coding_category_by_priority[j]; | |
| 4122 if (category_to_priority[cat] < 0) | |
| 4123 category_to_priority[cat] = i++; | |
| 4124 } | |
| 4125 | |
| 4126 /* Now we need to construct the inverse of the mapping we just | |
| 4127 constructed. */ | |
| 4128 | |
| 4129 for (i = 0; i < coding_detector_category_count; i++) | |
| 4130 coding_category_by_priority[category_to_priority[i]] = i; | |
| 4131 | |
| 4132 /* Phew! That was confusing. */ | |
| 4133 return Qnil; | |
| 4134 } | |
| 4135 | |
| 4136 DEFUN ("coding-priority-list", Fcoding_priority_list, 0, 0, 0, /* | |
| 4137 Return a list of coding categories in descending order of priority. | |
| 4138 */ | |
| 4139 ()) | |
| 4140 { | |
| 4141 int i; | |
| 4142 Lisp_Object list = Qnil; | |
| 4143 | |
| 4144 for (i = 0; i < coding_detector_category_count; i++) | |
| 4145 list = | |
| 4146 Fcons (coding_category_id_to_symbol (coding_category_by_priority[i]), | |
| 4147 list); | |
| 4148 return Fnreverse (list); | |
| 4149 } | |
| 4150 | |
| 4151 DEFUN ("set-coding-category-system", Fset_coding_category_system, 2, 2, 0, /* | |
| 4152 Change the coding system associated with a coding category. | |
| 4153 */ | |
| 4154 (coding_category, coding_system)) | |
| 4155 { | |
| 4156 coding_category_system[coding_category_symbol_to_id (coding_category)] = | |
| 4157 Fget_coding_system (coding_system); | |
| 4158 return Qnil; | |
| 4159 } | |
| 4160 | |
| 4161 DEFUN ("coding-category-system", Fcoding_category_system, 1, 1, 0, /* | |
| 4162 Return the coding system associated with a coding category. | |
| 4163 */ | |
| 4164 (coding_category)) | |
| 4165 { | |
| 4166 Lisp_Object sys = | |
| 4167 coding_category_system[coding_category_symbol_to_id (coding_category)]; | |
| 4168 | |
| 4169 if (!NILP (sys)) | |
| 4170 return XCODING_SYSTEM_NAME (sys); | |
| 4171 return Qnil; | |
| 4172 } | |
| 4173 | |
| 800 | 4174 /* Detect the encoding of STREAM. Assumes stream is at the begnning and will |
| 4175 read through to the end of STREAM, leaving it there but open. */ | |
| 4176 | |
| 771 | 4177 Lisp_Object |
| 4178 detect_coding_stream (Lisp_Object stream) | |
| 4179 { | |
| 4180 Lisp_Object val = Qnil; | |
| 4181 struct gcpro gcpro1, gcpro2, gcpro3; | |
| 4182 UExtbyte random_buffer[65536]; | |
| 4183 Lisp_Object binary_instream = | |
| 4184 make_coding_input_stream | |
| 4185 (XLSTREAM (stream), Qbinary, | |
| 814 | 4186 CODING_ENCODE, LSTREAM_FL_NO_CLOSE_OTHER); |
| 771 | 4187 Lisp_Object decstream = |
| 4188 make_coding_input_stream | |
| 4189 (XLSTREAM (binary_instream), | |
| 800 | 4190 Qundecided, CODING_DECODE, 0); |
| 771 | 4191 Lstream *decstr = XLSTREAM (decstream); |
| 4192 | |
| 4193 GCPRO3 (decstream, stream, binary_instream); | |
| 4194 /* Read and discard all data; detection happens as a side effect of this, | |
| 4195 and we examine what was detected afterwards. */ | |
| 4196 while (Lstream_read (decstr, random_buffer, sizeof (random_buffer)) > 0) | |
| 4197 ; | |
| 4198 | |
| 4199 val = coding_stream_detected_coding_system (decstr); | |
| 4200 Lstream_close (decstr); | |
| 4201 Lstream_delete (decstr); | |
| 4202 Lstream_delete (XLSTREAM (binary_instream)); | |
| 4203 UNGCPRO; | |
| 4204 return val; | |
| 428 | 4205 } |
| 4206 | |
| 4207 DEFUN ("detect-coding-region", Fdetect_coding_region, 2, 3, 0, /* | |
| 4208 Detect coding system of the text in the region between START and END. | |
| 444 | 4209 Return a list of possible coding systems ordered by priority. |
| 3025 | 4210 If only ASCII characters are found, return `undecided' or one of |
| 428 | 4211 its subsidiary coding systems according to a detected end-of-line |
| 4212 type. Optional arg BUFFER defaults to the current buffer. | |
| 4213 */ | |
| 4214 (start, end, buffer)) | |
| 4215 { | |
| 4216 Lisp_Object val = Qnil; | |
| 4217 struct buffer *buf = decode_buffer (buffer, 0); | |
| 665 | 4218 Charbpos b, e; |
| 771 | 4219 Lisp_Object lb_instream; |
| 428 | 4220 |
| 4221 get_buffer_range_char (buf, start, end, &b, &e, 0); | |
| 4222 lb_instream = make_lisp_buffer_input_stream (buf, b, e, 0); | |
| 771 | 4223 |
| 4224 val = detect_coding_stream (lb_instream); | |
| 4225 Lstream_delete (XLSTREAM (lb_instream)); | |
| 428 | 4226 return val; |
| 4227 } | |
| 4228 | |
| 4229 | |
| 771 | 4230 |
| 4231 #ifdef DEBUG_XEMACS | |
| 4232 | |
| 428 | 4233 /************************************************************************/ |
| 771 | 4234 /* Internal methods */ |
| 4235 /************************************************************************/ | |
| 4236 | |
| 4237 /* Raw (internally-formatted) data. */ | |
| 4238 DEFINE_CODING_SYSTEM_TYPE (internal); | |
| 428 | 4239 |
| 665 | 4240 static Bytecount |
| 2286 | 4241 internal_convert (struct coding_stream *UNUSED (str), const UExtbyte *src, |
| 771 | 4242 unsigned_char_dynarr *dst, Bytecount n) |
| 4243 { | |
| 4244 Bytecount orign = n; | |
| 4245 Dynarr_add_many (dst, src, n); | |
| 4246 return orign; | |
| 4247 } | |
| 4248 | |
| 4249 #endif /* DEBUG_XEMACS */ | |
| 4250 | |
| 4251 | |
| 4252 | |
| 4253 #ifdef HAVE_ZLIB | |
| 4254 | |
| 4255 /************************************************************************/ | |
| 4256 /* Gzip methods */ | |
| 4257 /************************************************************************/ | |
| 4258 | |
| 4259 struct gzip_coding_system | |
| 428 | 4260 { |
| 771 | 4261 int level; /* 0 through 9, or -1 for default */ |
| 4262 }; | |
| 4263 | |
| 4264 #define CODING_SYSTEM_GZIP_LEVEL(codesys) \ | |
| 4265 (CODING_SYSTEM_TYPE_DATA (codesys, gzip)->level) | |
| 4266 #define XCODING_SYSTEM_GZIP_LEVEL(codesys) \ | |
| 4267 (XCODING_SYSTEM_TYPE_DATA (codesys, gzip)->level) | |
| 4268 | |
| 4269 struct gzip_coding_stream | |
| 428 | 4270 { |
| 771 | 4271 z_stream stream; |
| 4272 int stream_initted; | |
| 4273 int reached_eof; /* #### this should be handled by the caller, once we | |
| 4274 return LSTREAM_EOF */ | |
| 4275 }; | |
| 4276 | |
| 1204 | 4277 static const struct memory_description |
| 771 | 4278 gzip_coding_system_description[] = { |
| 4279 { XD_END } | |
| 4280 }; | |
| 4281 | |
| 1204 | 4282 DEFINE_CODING_SYSTEM_TYPE_WITH_DATA (gzip); |
| 4283 | |
| 771 | 4284 enum source_sink_type |
| 4285 gzip_conversion_end_type (Lisp_Object codesys) | |
| 4286 { | |
| 4287 return DECODES_BYTE_TO_BYTE; | |
| 428 | 4288 } |
| 4289 | |
| 4290 static void | |
| 771 | 4291 gzip_init (Lisp_Object codesys) |
| 4292 { | |
| 4293 struct gzip_coding_system *data = XCODING_SYSTEM_TYPE_DATA (codesys, gzip); | |
| 4294 data->level = -1; | |
| 4295 } | |
| 4296 | |
| 4297 static void | |
| 4298 gzip_print (Lisp_Object cs, Lisp_Object printcharfun, int escapeflag) | |
| 428 | 4299 { |
| 771 | 4300 struct gzip_coding_system *data = XCODING_SYSTEM_TYPE_DATA (cs, gzip); |
| 4301 | |
|
4952
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4846
diff
changeset
|
4302 write_ascstring (printcharfun, "("); |
| 771 | 4303 if (data->level == -1) |
|
4952
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Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4304 write_ascstring (printcharfun, "default"); |
| 771 | 4305 else |
| 4306 print_internal (make_int (data->level), printcharfun, 0); | |
|
4952
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parents:
4846
diff
changeset
|
4307 write_ascstring (printcharfun, ")"); |
| 428 | 4308 } |
| 4309 | |
| 4310 static int | |
| 771 | 4311 gzip_putprop (Lisp_Object codesys, Lisp_Object key, Lisp_Object value) |
| 428 | 4312 { |
| 771 | 4313 struct gzip_coding_system *data = XCODING_SYSTEM_TYPE_DATA (codesys, gzip); |
| 4314 | |
| 4315 if (EQ (key, Qlevel)) | |
| 428 | 4316 { |
| 771 | 4317 if (EQ (value, Qdefault)) |
| 4318 data->level = -1; | |
| 4319 else | |
| 428 | 4320 { |
| 771 | 4321 CHECK_INT (value); |
| 4322 check_int_range (XINT (value), 0, 9); | |
| 4323 data->level = XINT (value); | |
| 428 | 4324 } |
| 4325 } | |
| 4326 else | |
| 771 | 4327 return 0; |
| 4328 return 1; | |
| 428 | 4329 } |
| 4330 | |
| 4331 static Lisp_Object | |
| 771 | 4332 gzip_getprop (Lisp_Object coding_system, Lisp_Object prop) |
| 428 | 4333 { |
| 771 | 4334 struct gzip_coding_system *data = |
| 4335 XCODING_SYSTEM_TYPE_DATA (coding_system, gzip); | |
| 4336 | |
| 4337 if (EQ (prop, Qlevel)) | |
| 428 | 4338 { |
| 771 | 4339 if (data->level == -1) |
| 4340 return Qdefault; | |
| 4341 return make_int (data->level); | |
| 428 | 4342 } |
| 771 | 4343 |
| 4344 return Qunbound; | |
| 428 | 4345 } |
| 4346 | |
| 4347 static void | |
| 771 | 4348 gzip_init_coding_stream (struct coding_stream *str) |
| 428 | 4349 { |
| 771 | 4350 struct gzip_coding_stream *data = CODING_STREAM_TYPE_DATA (str, gzip); |
| 4351 if (data->stream_initted) | |
| 428 | 4352 { |
| 771 | 4353 if (str->direction == CODING_DECODE) |
| 4354 inflateEnd (&data->stream); | |
| 4355 else | |
| 4356 deflateEnd (&data->stream); | |
| 4357 data->stream_initted = 0; | |
| 428 | 4358 } |
| 771 | 4359 data->reached_eof = 0; |
| 428 | 4360 } |
| 4361 | |
| 4362 static void | |
| 771 | 4363 gzip_rewind_coding_stream (struct coding_stream *str) |
| 428 | 4364 { |
| 771 | 4365 gzip_init_coding_stream (str); |
| 428 | 4366 } |
| 4367 | |
| 771 | 4368 static Bytecount |
| 4369 gzip_convert (struct coding_stream *str, | |
| 4370 const UExtbyte *src, | |
| 4371 unsigned_char_dynarr *dst, Bytecount n) | |
| 428 | 4372 { |
| 771 | 4373 struct gzip_coding_stream *data = CODING_STREAM_TYPE_DATA (str, gzip); |
| 4374 int zerr; | |
| 4375 if (str->direction == CODING_DECODE) | |
| 428 | 4376 { |
| 771 | 4377 if (data->reached_eof) |
| 4378 return n; /* eat the data */ | |
| 4379 | |
| 4380 if (!data->stream_initted) | |
| 428 | 4381 { |
| 771 | 4382 xzero (data->stream); |
| 4383 if (inflateInit (&data->stream) != Z_OK) | |
| 4384 return LSTREAM_ERROR; | |
| 4385 data->stream_initted = 1; | |
| 428 | 4386 } |
| 771 | 4387 |
| 4388 data->stream.next_in = (Bytef *) src; | |
| 4389 data->stream.avail_in = n; | |
| 4390 | |
| 4391 /* Normally we stop when we've fed all data to the decompressor; but | |
| 4392 if we're at the end of the input, and the decompressor hasn't | |
| 4393 reported EOF, we need to keep going, as there might be more output | |
| 4394 to generate. Z_OK from the decompressor means input was processed | |
| 4395 or output was generated; if neither, we break out of the loop. | |
| 4396 Other return values are: | |
| 4397 | |
| 4398 Z_STREAM_END EOF from decompressor | |
| 4399 Z_DATA_ERROR Corrupted data | |
| 4400 Z_BUF_ERROR No progress possible (this should happen if | |
| 4401 we try to feed it an incomplete file) | |
| 4402 Z_MEM_ERROR Out of memory | |
| 4403 Z_STREAM_ERROR (should never happen) | |
| 4404 Z_NEED_DICT (#### when will this happen?) | |
| 4405 */ | |
| 4406 while (data->stream.avail_in > 0 || str->eof) | |
| 4407 { | |
| 4408 /* Reserve an output buffer of the same size as the input buffer; | |
| 4409 if that's not enough, we keep reserving the same size. */ | |
| 4410 Bytecount reserved = n; | |
| 4411 Dynarr_add_many (dst, 0, reserved); | |
| 4412 /* Careful here! Don't retrieve the pointer until after | |
| 4413 reserving the space, or it might be bogus */ | |
| 4414 data->stream.next_out = | |
| 4415 Dynarr_atp (dst, Dynarr_length (dst) - reserved); | |
| 4416 data->stream.avail_out = reserved; | |
| 4417 zerr = inflate (&data->stream, Z_NO_FLUSH); | |
| 4418 /* Lop off the unused portion */ | |
| 5038 | 4419 Dynarr_set_lengthr (dst, Dynarr_length (dst) - data->stream.avail_out); |
| 771 | 4420 if (zerr != Z_OK) |
| 4421 break; | |
| 4422 } | |
| 4423 | |
| 4424 if (zerr == Z_STREAM_END) | |
| 4425 data->reached_eof = 1; | |
| 4426 | |
| 4427 if ((Bytecount) data->stream.avail_in < n) | |
| 4428 return n - data->stream.avail_in; | |
| 4429 | |
| 4430 if (zerr == Z_OK || zerr == Z_STREAM_END) | |
| 4431 return 0; | |
| 4432 | |
| 4433 return LSTREAM_ERROR; | |
| 428 | 4434 } |
| 4435 else | |
| 4436 { | |
| 771 | 4437 if (!data->stream_initted) |
| 4438 { | |
| 4439 int level = XCODING_SYSTEM_GZIP_LEVEL (str->codesys); | |
| 4440 xzero (data->stream); | |
| 4441 if (deflateInit (&data->stream, | |
| 4442 level == -1 ? Z_DEFAULT_COMPRESSION : level) != | |
| 4443 Z_OK) | |
| 4444 return LSTREAM_ERROR; | |
| 4445 data->stream_initted = 1; | |
| 428 | 4446 } |
| 771 | 4447 |
| 4448 data->stream.next_in = (Bytef *) src; | |
| 4449 data->stream.avail_in = n; | |
| 4450 | |
| 4451 /* Normally we stop when we've fed all data to the compressor; but if | |
| 4452 we're at the end of the input, and the compressor hasn't reported | |
| 4453 EOF, we need to keep going, as there might be more output to | |
| 4454 generate. (To signal EOF on our end, we set the FLUSH parameter | |
| 4455 to Z_FINISH; when all data is output, Z_STREAM_END will be | |
| 4456 returned.) Z_OK from the compressor means input was processed or | |
| 4457 output was generated; if neither, we break out of the loop. Other | |
| 4458 return values are: | |
| 4459 | |
| 4460 Z_STREAM_END EOF from compressor | |
| 4461 Z_BUF_ERROR No progress possible (should never happen) | |
| 4462 Z_STREAM_ERROR (should never happen) | |
| 4463 */ | |
| 4464 while (data->stream.avail_in > 0 || str->eof) | |
| 4465 { | |
| 4466 /* Reserve an output buffer of the same size as the input buffer; | |
| 4467 if that's not enough, we keep reserving the same size. */ | |
| 4468 Bytecount reserved = n; | |
| 4469 Dynarr_add_many (dst, 0, reserved); | |
| 4470 /* Careful here! Don't retrieve the pointer until after | |
| 4471 reserving the space, or it might be bogus */ | |
| 4472 data->stream.next_out = | |
| 4473 Dynarr_atp (dst, Dynarr_length (dst) - reserved); | |
| 4474 data->stream.avail_out = reserved; | |
| 4475 zerr = | |
| 4476 deflate (&data->stream, | |
| 4477 str->eof ? Z_FINISH : Z_NO_FLUSH); | |
| 4478 /* Lop off the unused portion */ | |
| 5038 | 4479 Dynarr_set_lengthr (dst, Dynarr_length (dst) - data->stream.avail_out); |
| 771 | 4480 if (zerr != Z_OK) |
| 4481 break; | |
| 4482 } | |
| 4483 | |
| 4484 if ((Bytecount) data->stream.avail_in < n) | |
| 4485 return n - data->stream.avail_in; | |
| 4486 | |
| 4487 if (zerr == Z_OK || zerr == Z_STREAM_END) | |
| 4488 return 0; | |
| 4489 | |
| 4490 return LSTREAM_ERROR; | |
| 428 | 4491 } |
| 4492 } | |
| 4493 | |
| 771 | 4494 #endif /* HAVE_ZLIB */ |
| 428 | 4495 |
| 4496 | |
| 4497 /************************************************************************/ | |
| 4498 /* Initialization */ | |
| 4499 /************************************************************************/ | |
| 4500 | |
| 4501 void | |
| 4502 syms_of_file_coding (void) | |
| 4503 { | |
|
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parents:
3025
diff
changeset
|
4504 INIT_LISP_OBJECT (coding_system); |
| 442 | 4505 |
| 771 | 4506 DEFSUBR (Fvalid_coding_system_type_p); |
| 4507 DEFSUBR (Fcoding_system_type_list); | |
| 428 | 4508 DEFSUBR (Fcoding_system_p); |
| 4303 | 4509 DEFSUBR (Fautoload_coding_system); |
| 428 | 4510 DEFSUBR (Ffind_coding_system); |
| 4511 DEFSUBR (Fget_coding_system); | |
| 4512 DEFSUBR (Fcoding_system_list); | |
| 4513 DEFSUBR (Fcoding_system_name); | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4514 DEFSUBR (Fmake_coding_system_internal); |
| 428 | 4515 DEFSUBR (Fcopy_coding_system); |
| 440 | 4516 DEFSUBR (Fcoding_system_canonical_name_p); |
| 4517 DEFSUBR (Fcoding_system_alias_p); | |
| 4518 DEFSUBR (Fcoding_system_aliasee); | |
| 428 | 4519 DEFSUBR (Fdefine_coding_system_alias); |
| 4520 DEFSUBR (Fsubsidiary_coding_system); | |
| 771 | 4521 DEFSUBR (Fcoding_system_base); |
| 4522 DEFSUBR (Fcoding_system_used_for_io); | |
| 428 | 4523 |
| 4524 DEFSUBR (Fcoding_system_type); | |
| 771 | 4525 DEFSUBR (Fcoding_system_description); |
| 428 | 4526 DEFSUBR (Fcoding_system_property); |
| 4527 | |
| 4528 DEFSUBR (Fcoding_category_list); | |
| 4529 DEFSUBR (Fset_coding_priority_list); | |
| 4530 DEFSUBR (Fcoding_priority_list); | |
| 4531 DEFSUBR (Fset_coding_category_system); | |
| 4532 DEFSUBR (Fcoding_category_system); | |
| 4533 | |
| 4534 DEFSUBR (Fdetect_coding_region); | |
| 4535 DEFSUBR (Fdecode_coding_region); | |
| 4536 DEFSUBR (Fencode_coding_region); | |
|
4690
257b468bf2ca
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4537 DEFSUBR (Fquery_coding_region); |
| 563 | 4538 DEFSYMBOL_MULTIWORD_PREDICATE (Qcoding_systemp); |
| 4539 DEFSYMBOL (Qno_conversion); | |
| 771 | 4540 DEFSYMBOL (Qconvert_eol); |
| 4541 DEFSYMBOL (Qconvert_eol_autodetect); | |
| 4542 DEFSYMBOL (Qconvert_eol_lf); | |
| 4543 DEFSYMBOL (Qconvert_eol_cr); | |
| 4544 DEFSYMBOL (Qconvert_eol_crlf); | |
| 563 | 4545 DEFSYMBOL (Qraw_text); |
| 771 | 4546 |
| 563 | 4547 DEFSYMBOL (Qmnemonic); |
| 4548 DEFSYMBOL (Qeol_type); | |
| 4549 DEFSYMBOL (Qpost_read_conversion); | |
| 4550 DEFSYMBOL (Qpre_write_conversion); | |
| 4551 | |
| 771 | 4552 DEFSYMBOL (Qtranslation_table_for_decode); |
| 4553 DEFSYMBOL (Qtranslation_table_for_encode); | |
| 4554 DEFSYMBOL (Qsafe_chars); | |
| 4555 DEFSYMBOL (Qsafe_charsets); | |
| 4556 DEFSYMBOL (Qmime_charset); | |
| 4557 DEFSYMBOL (Qvalid_codes); | |
| 4558 | |
| 563 | 4559 DEFSYMBOL (Qcr); |
| 4560 DEFSYMBOL (Qlf); | |
| 4561 DEFSYMBOL (Qcrlf); | |
| 4562 DEFSYMBOL (Qeol_cr); | |
| 4563 DEFSYMBOL (Qeol_lf); | |
| 4564 DEFSYMBOL (Qeol_crlf); | |
| 4565 DEFSYMBOL (Qencode); | |
| 4566 DEFSYMBOL (Qdecode); | |
| 428 | 4567 |
| 771 | 4568 DEFSYMBOL (Qnear_certainty); |
| 4569 DEFSYMBOL (Qquite_probable); | |
| 4570 DEFSYMBOL (Qsomewhat_likely); | |
| 1494 | 4571 DEFSYMBOL (Qslightly_likely); |
| 771 | 4572 DEFSYMBOL (Qas_likely_as_unlikely); |
| 4573 DEFSYMBOL (Qsomewhat_unlikely); | |
| 4574 DEFSYMBOL (Qquite_improbable); | |
| 4575 DEFSYMBOL (Qnearly_impossible); | |
| 4576 | |
| 4577 DEFSYMBOL (Qdo_eol); | |
| 4578 DEFSYMBOL (Qdo_coding); | |
| 4579 | |
| 4580 DEFSYMBOL (Qcanonicalize_after_coding); | |
| 4581 | |
| 4303 | 4582 DEFSYMBOL (Qposix_charset_to_coding_system_hash); |
| 4583 | |
| 771 | 4584 DEFSYMBOL (Qescape_quoted); |
| 4585 | |
|
4690
257b468bf2ca
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4586 DEFSYMBOL (Qquery_coding_warning_face); |
|
257b468bf2ca
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4587 DEFSYMBOL (Qaliases); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4588 DEFSYMBOL (Qcharset_skip_chars_string); |
|
257b468bf2ca
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4589 |
| 771 | 4590 #ifdef HAVE_ZLIB |
| 4591 DEFSYMBOL (Qgzip); | |
| 4592 #endif | |
| 4593 | |
| 428 | 4594 } |
| 4595 | |
| 4596 void | |
| 4597 lstream_type_create_file_coding (void) | |
| 4598 { | |
| 771 | 4599 LSTREAM_HAS_METHOD (coding, reader); |
| 4600 LSTREAM_HAS_METHOD (coding, writer); | |
| 4601 LSTREAM_HAS_METHOD (coding, rewinder); | |
| 4602 LSTREAM_HAS_METHOD (coding, seekable_p); | |
| 4603 LSTREAM_HAS_METHOD (coding, marker); | |
| 4604 LSTREAM_HAS_METHOD (coding, flusher); | |
| 4605 LSTREAM_HAS_METHOD (coding, closer); | |
| 4606 LSTREAM_HAS_METHOD (coding, finalizer); | |
| 4607 } | |
| 4608 | |
| 4609 void | |
| 4610 coding_system_type_create (void) | |
| 4611 { | |
| 4612 int i; | |
| 4613 | |
| 4614 staticpro (&Vcoding_system_hash_table); | |
| 4615 Vcoding_system_hash_table = | |
| 4616 make_lisp_hash_table (50, HASH_TABLE_NON_WEAK, HASH_TABLE_EQ); | |
| 4617 | |
| 4618 the_coding_system_type_entry_dynarr = Dynarr_new (coding_system_type_entry); | |
| 2367 | 4619 dump_add_root_block_ptr (&the_coding_system_type_entry_dynarr, |
| 771 | 4620 &csted_description); |
| 4621 | |
| 4622 Vcoding_system_type_list = Qnil; | |
| 4623 staticpro (&Vcoding_system_type_list); | |
| 4624 | |
| 4625 /* Initialize to something reasonable ... */ | |
| 4626 for (i = 0; i < MAX_DETECTOR_CATEGORIES; i++) | |
| 4627 { | |
| 4628 coding_category_system[i] = Qnil; | |
| 1204 | 4629 dump_add_root_lisp_object (&coding_category_system[i]); |
| 771 | 4630 coding_category_by_priority[i] = i; |
| 4631 } | |
| 4632 | |
| 4633 dump_add_opaque (coding_category_by_priority, | |
| 4634 sizeof (coding_category_by_priority)); | |
| 4635 | |
| 4636 all_coding_detectors = Dynarr_new2 (detector_dynarr, struct detector); | |
| 2367 | 4637 dump_add_root_block_ptr (&all_coding_detectors, |
| 771 | 4638 &detector_dynarr_description); |
| 4639 | |
| 4640 dump_add_opaque_int (&coding_system_tick); | |
| 4641 dump_add_opaque_int (&coding_detector_count); | |
| 4642 dump_add_opaque_int (&coding_detector_category_count); | |
| 4643 | |
| 4644 INITIALIZE_CODING_SYSTEM_TYPE (no_conversion, | |
| 4645 "no-conversion-coding-system-p"); | |
| 4646 CODING_SYSTEM_HAS_METHOD (no_conversion, convert); | |
| 4647 | |
| 4648 INITIALIZE_DETECTOR (no_conversion); | |
| 4649 DETECTOR_HAS_METHOD (no_conversion, detect); | |
| 4650 INITIALIZE_DETECTOR_CATEGORY (no_conversion, no_conversion); | |
| 4651 | |
| 4652 INITIALIZE_CODING_SYSTEM_TYPE_WITH_DATA (convert_eol, | |
| 4653 "convert-eol-coding-system-p"); | |
| 4654 CODING_SYSTEM_HAS_METHOD (convert_eol, print); | |
| 4655 CODING_SYSTEM_HAS_METHOD (convert_eol, convert); | |
| 4656 CODING_SYSTEM_HAS_METHOD (convert_eol, getprop); | |
| 4657 CODING_SYSTEM_HAS_METHOD (convert_eol, putprop); | |
| 4658 CODING_SYSTEM_HAS_METHOD (convert_eol, conversion_end_type); | |
| 4659 CODING_SYSTEM_HAS_METHOD (convert_eol, canonicalize_after_coding); | |
| 4660 CODING_SYSTEM_HAS_METHOD (convert_eol, init_coding_stream); | |
| 4661 | |
| 4662 INITIALIZE_CODING_SYSTEM_TYPE_WITH_DATA (undecided, | |
| 4663 "undecided-coding-system-p"); | |
| 4664 CODING_SYSTEM_HAS_METHOD (undecided, init); | |
| 4665 CODING_SYSTEM_HAS_METHOD (undecided, mark); | |
| 4666 CODING_SYSTEM_HAS_METHOD (undecided, print); | |
| 4667 CODING_SYSTEM_HAS_METHOD (undecided, convert); | |
| 4668 CODING_SYSTEM_HAS_METHOD (undecided, putprop); | |
| 4669 CODING_SYSTEM_HAS_METHOD (undecided, getprop); | |
| 4670 CODING_SYSTEM_HAS_METHOD (undecided, init_coding_stream); | |
| 4671 CODING_SYSTEM_HAS_METHOD (undecided, rewind_coding_stream); | |
| 4672 CODING_SYSTEM_HAS_METHOD (undecided, finalize_coding_stream); | |
| 4673 CODING_SYSTEM_HAS_METHOD (undecided, mark_coding_stream); | |
| 4674 CODING_SYSTEM_HAS_METHOD (undecided, canonicalize); | |
| 4675 CODING_SYSTEM_HAS_METHOD (undecided, canonicalize_after_coding); | |
| 4676 | |
| 4677 INITIALIZE_CODING_SYSTEM_TYPE_WITH_DATA (chain, "chain-coding-system-p"); | |
| 4678 | |
| 4679 CODING_SYSTEM_HAS_METHOD (chain, print); | |
| 4680 CODING_SYSTEM_HAS_METHOD (chain, canonicalize); | |
| 4681 CODING_SYSTEM_HAS_METHOD (chain, init); | |
| 4682 CODING_SYSTEM_HAS_METHOD (chain, mark); | |
| 4683 CODING_SYSTEM_HAS_METHOD (chain, mark_coding_stream); | |
| 4684 CODING_SYSTEM_HAS_METHOD (chain, convert); | |
| 4685 CODING_SYSTEM_HAS_METHOD (chain, rewind_coding_stream); | |
| 4686 CODING_SYSTEM_HAS_METHOD (chain, finalize_coding_stream); | |
| 4687 CODING_SYSTEM_HAS_METHOD (chain, finalize); | |
| 4688 CODING_SYSTEM_HAS_METHOD (chain, putprop); | |
| 4689 CODING_SYSTEM_HAS_METHOD (chain, getprop); | |
| 4690 CODING_SYSTEM_HAS_METHOD (chain, conversion_end_type); | |
| 4691 CODING_SYSTEM_HAS_METHOD (chain, canonicalize_after_coding); | |
| 4692 | |
| 4693 #ifdef DEBUG_XEMACS | |
| 4694 INITIALIZE_CODING_SYSTEM_TYPE (internal, "internal-coding-system-p"); | |
| 4695 CODING_SYSTEM_HAS_METHOD (internal, convert); | |
| 4696 #endif | |
| 4697 | |
| 4698 #ifdef HAVE_ZLIB | |
| 4699 INITIALIZE_CODING_SYSTEM_TYPE_WITH_DATA (gzip, "gzip-coding-system-p"); | |
| 4700 CODING_SYSTEM_HAS_METHOD (gzip, conversion_end_type); | |
| 4701 CODING_SYSTEM_HAS_METHOD (gzip, convert); | |
| 4702 CODING_SYSTEM_HAS_METHOD (gzip, init); | |
| 4703 CODING_SYSTEM_HAS_METHOD (gzip, print); | |
| 4704 CODING_SYSTEM_HAS_METHOD (gzip, init_coding_stream); | |
| 4705 CODING_SYSTEM_HAS_METHOD (gzip, rewind_coding_stream); | |
| 4706 CODING_SYSTEM_HAS_METHOD (gzip, putprop); | |
| 4707 CODING_SYSTEM_HAS_METHOD (gzip, getprop); | |
| 4708 #endif | |
| 4709 } | |
| 4710 | |
| 4711 void | |
| 4712 reinit_coding_system_type_create (void) | |
| 4713 { | |
| 4714 REINITIALIZE_CODING_SYSTEM_TYPE (no_conversion); | |
| 4715 REINITIALIZE_CODING_SYSTEM_TYPE (convert_eol); | |
| 4716 REINITIALIZE_CODING_SYSTEM_TYPE (undecided); | |
| 4717 REINITIALIZE_CODING_SYSTEM_TYPE (chain); | |
| 4718 #if 0 | |
| 4719 REINITIALIZE_CODING_SYSTEM_TYPE (text_file_wrapper); | |
| 4720 #endif /* 0 */ | |
| 4721 #ifdef DEBUG_XEMACS | |
| 4722 REINITIALIZE_CODING_SYSTEM_TYPE (internal); | |
| 4723 #endif | |
| 4724 #ifdef HAVE_ZLIB | |
| 4725 REINITIALIZE_CODING_SYSTEM_TYPE (gzip); | |
| 4726 #endif | |
| 4727 } | |
| 4728 | |
| 4729 void | |
| 4730 reinit_vars_of_file_coding (void) | |
| 4731 { | |
| 428 | 4732 } |
| 4733 | |
| 4734 void | |
| 4735 vars_of_file_coding (void) | |
| 4736 { | |
| 771 | 4737 /* We always have file-coding support */ |
| 428 | 4738 Fprovide (intern ("file-coding")); |
| 4739 | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4740 QScoding_system_cookie = build_ascstring (";;;###coding system: "); |
| 1347 | 4741 staticpro (&QScoding_system_cookie); |
| 4742 | |
| 1242 | 4743 #ifdef HAVE_DEFAULT_EOL_DETECTION |
| 2297 | 4744 /* #### Find a more appropriate place for this comment. |
| 4745 WARNING: The existing categories are intimately tied to the function | |
| 1242 | 4746 `coding-system-category' in coding.el. If you change a category, or |
| 4747 change the layout of any coding system associated with a category, you | |
| 4748 need to check that function and make sure it's written properly. */ | |
| 4749 | |
| 4750 Fprovide (intern ("unix-default-eol-detection")); | |
| 4751 #endif | |
| 4752 | |
| 428 | 4753 DEFVAR_LISP ("keyboard-coding-system", &Vkeyboard_coding_system /* |
| 3142 | 4754 Default coding system used for TTY and X11 keyboard input. |
| 4755 Under X11, used only to interpet the character for a key event when that | |
| 4756 event has a KeySym of NoSymbol but does have an associated string keysym, | |
| 4757 something that's seen with input methods. | |
| 4758 | |
| 4759 If you need to set these things to different coding systems, call the | |
| 4760 function `set-console-tty-coding-system' for the TTY and use this variable | |
| 4761 for X11. | |
| 428 | 4762 */ ); |
| 4763 Vkeyboard_coding_system = Qnil; | |
| 4764 | |
| 4765 DEFVAR_LISP ("terminal-coding-system", &Vterminal_coding_system /* | |
| 4766 Coding system used for TTY display output. | |
| 4767 Not used under a windowing system. | |
| 4768 */ ); | |
| 4769 Vterminal_coding_system = Qnil; | |
| 4770 | |
| 4771 DEFVAR_LISP ("coding-system-for-read", &Vcoding_system_for_read /* | |
| 440 | 4772 Overriding coding system used when reading from a file or process. |
| 4773 You should bind this variable with `let', but do not set it globally. | |
| 4774 If this is non-nil, it specifies the coding system that will be used | |
| 4775 to decode input on read operations, such as from a file or process. | |
| 4776 It overrides `buffer-file-coding-system-for-read', | |
| 428 | 4777 `insert-file-contents-pre-hook', etc. Use those variables instead of |
| 440 | 4778 this one for permanent changes to the environment. */ ); |
| 428 | 4779 Vcoding_system_for_read = Qnil; |
| 4780 | |
| 4781 DEFVAR_LISP ("coding-system-for-write", | |
| 4782 &Vcoding_system_for_write /* | |
| 440 | 4783 Overriding coding system used when writing to a file or process. |
| 4784 You should bind this variable with `let', but do not set it globally. | |
| 4785 If this is non-nil, it specifies the coding system that will be used | |
| 4786 to encode output for write operations, such as to a file or process. | |
| 4787 It overrides `buffer-file-coding-system', `write-region-pre-hook', etc. | |
| 4788 Use those variables instead of this one for permanent changes to the | |
| 4789 environment. */ ); | |
| 428 | 4790 Vcoding_system_for_write = Qnil; |
| 4791 | |
| 4792 DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system /* | |
| 4793 Coding system used to convert pathnames when accessing files. | |
| 4794 */ ); | |
| 4795 Vfile_name_coding_system = Qnil; | |
| 4796 | |
| 4797 DEFVAR_BOOL ("enable-multibyte-characters", &enable_multibyte_characters /* | |
| 771 | 4798 Setting this has no effect. It is purely for FSF compatibility. |
| 428 | 4799 */ ); |
| 4800 enable_multibyte_characters = 1; | |
| 771 | 4801 |
| 4802 Vchain_canonicalize_hash_table = | |
| 4803 make_lisp_hash_table (50, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL); | |
| 4804 staticpro (&Vchain_canonicalize_hash_table); | |
| 4805 | |
| 4806 #ifdef DEBUG_XEMACS | |
| 4807 DEFVAR_LISP ("debug-coding-detection", &Vdebug_coding_detection /* | |
| 4808 If non-nil, display debug information about detection operations in progress. | |
| 4809 Information is displayed on stderr. | |
| 4810 */ ); | |
| 4811 Vdebug_coding_detection = Qnil; | |
| 4812 #endif | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4813 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4814 #ifdef MULE |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4815 Vdefault_query_coding_region_chartab_cache |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4816 = make_lisp_hash_table (25, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4817 staticpro (&Vdefault_query_coding_region_chartab_cache); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4818 #endif |
| 428 | 4819 } |
| 4820 | |
| 2297 | 4821 /* #### reformat this for consistent appearance? */ |
| 4822 | |
| 428 | 4823 void |
| 4824 complex_vars_of_file_coding (void) | |
| 4825 { | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4826 Fmake_coding_system_internal |
| 771 | 4827 (Qconvert_eol_cr, Qconvert_eol, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4828 build_defer_string ("Convert CR to LF"), |
| 771 | 4829 nconc2 (list6 (Qdocumentation, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4830 build_defer_string ( |
| 771 | 4831 "Converts CR (used to mark the end of a line on Macintosh systems) to LF\n" |
| 4832 "(used internally and under Unix to mark the end of a line)."), | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4833 Qmnemonic, build_ascstring ("CR->LF"), |
| 771 | 4834 Qsubtype, Qcr), |
| 4835 /* VERY IMPORTANT! Tell make-coding-system not to generate | |
| 4836 subsidiaries -- it needs the coding systems we're creating | |
| 4837 to do so! */ | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4838 list4 (Qeol_type, Qlf, |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4839 Qsafe_charsets, Qt))); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4840 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4841 Fmake_coding_system_internal |
| 771 | 4842 (Qconvert_eol_lf, Qconvert_eol, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4843 build_defer_string ("Convert LF to LF (do nothing)"), |
| 771 | 4844 nconc2 (list6 (Qdocumentation, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4845 build_defer_string ( |
| 771 | 4846 "Do nothing."), |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4847 Qmnemonic, build_ascstring ("LF->LF"), |
| 771 | 4848 Qsubtype, Qlf), |
| 4849 /* VERY IMPORTANT! Tell make-coding-system not to generate | |
| 4850 subsidiaries -- it needs the coding systems we're creating | |
| 4851 to do so! */ | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4852 list4 (Qeol_type, Qlf, |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4853 Qsafe_charsets, Qt))); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4854 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4855 Fmake_coding_system_internal |
| 771 | 4856 (Qconvert_eol_crlf, Qconvert_eol, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4857 build_defer_string ("Convert CRLF to LF"), |
| 771 | 4858 nconc2 (list6 (Qdocumentation, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4859 build_defer_string ( |
| 771 | 4860 "Converts CR+LF (used to mark the end of a line on Macintosh systems) to LF\n" |
| 4861 "(used internally and under Unix to mark the end of a line)."), | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4862 Qmnemonic, build_ascstring ("CRLF->LF"), |
| 771 | 4863 Qsubtype, Qcrlf), |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4864 |
| 771 | 4865 /* VERY IMPORTANT! Tell make-coding-system not to generate |
| 4866 subsidiaries -- it needs the coding systems we're creating | |
| 4867 to do so! */ | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4868 list4 (Qeol_type, Qlf, |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4869 Qsafe_charsets, Qt))); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4870 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4871 Fmake_coding_system_internal |
| 771 | 4872 (Qconvert_eol_autodetect, Qconvert_eol, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4873 build_defer_string ("Autodetect EOL type"), |
| 771 | 4874 nconc2 (list6 (Qdocumentation, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4875 build_defer_string ( |
| 771 | 4876 "Autodetect the end-of-line type."), |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4877 Qmnemonic, build_ascstring ("Auto-EOL"), |
| 793 | 4878 Qsubtype, Qnil), |
| 771 | 4879 /* VERY IMPORTANT! Tell make-coding-system not to generate |
| 4880 subsidiaries -- it needs the coding systems we're creating | |
| 4881 to do so! */ | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4882 list4 (Qeol_type, Qlf, |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4883 Qsafe_charsets, Qt))); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4884 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4885 Fmake_coding_system_internal |
| 771 | 4886 (Qundecided, Qundecided, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4887 build_defer_string ("Undecided (auto-detect)"), |
| 771 | 4888 nconc2 (list4 (Qdocumentation, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4889 build_defer_string |
| 771 | 4890 ("Automatically detects the correct encoding."), |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4891 Qmnemonic, build_ascstring ("Auto")), |
| 771 | 4892 list6 (Qdo_eol, Qt, Qdo_coding, Qt, |
| 4893 /* We do EOL detection ourselves so we don't need to be | |
| 4894 wrapped in an EOL detector. (It doesn't actually hurt, | |
| 4895 though, I don't think.) */ | |
| 4896 Qeol_type, Qlf))); | |
| 4897 | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4898 Fmake_coding_system_internal |
| 771 | 4899 (intern ("undecided-dos"), Qundecided, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4900 build_defer_string ("Undecided (auto-detect) (CRLF)"), |
| 771 | 4901 nconc2 (list4 (Qdocumentation, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4902 build_defer_string |
| 771 | 4903 ("Automatically detects the correct encoding; EOL type of CRLF forced."), |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4904 Qmnemonic, build_ascstring ("Auto")), |
| 771 | 4905 list4 (Qdo_coding, Qt, |
| 4906 Qeol_type, Qcrlf))); | |
| 4907 | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4908 Fmake_coding_system_internal |
| 771 | 4909 (intern ("undecided-unix"), Qundecided, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4910 build_defer_string ("Undecided (auto-detect) (LF)"), |
| 771 | 4911 nconc2 (list4 (Qdocumentation, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4912 build_defer_string |
| 771 | 4913 ("Automatically detects the correct encoding; EOL type of LF forced."), |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4914 Qmnemonic, build_ascstring ("Auto")), |
| 771 | 4915 list4 (Qdo_coding, Qt, |
| 4916 Qeol_type, Qlf))); | |
| 4917 | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4918 Fmake_coding_system_internal |
| 771 | 4919 (intern ("undecided-mac"), Qundecided, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4920 build_defer_string ("Undecided (auto-detect) (CR)"), |
| 771 | 4921 nconc2 (list4 (Qdocumentation, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4922 build_defer_string |
| 771 | 4923 ("Automatically detects the correct encoding; EOL type of CR forced."), |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4924 Qmnemonic, build_ascstring ("Auto")), |
| 771 | 4925 list4 (Qdo_coding, Qt, |
| 4926 Qeol_type, Qcr))); | |
| 4927 | |
| 428 | 4928 /* Need to create this here or we're really screwed. */ |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4929 Fmake_coding_system_internal |
| 428 | 4930 (Qraw_text, Qno_conversion, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4931 build_defer_string ("Raw Text"), |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4932 nconc2 (list4 (Qdocumentation, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4933 build_defer_string ("Raw text converts only line-break " |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4934 "codes, and acts otherwise like " |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4935 "`binary'."), |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4936 Qmnemonic, build_ascstring ("Raw")), |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4937 #ifdef MULE |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4938 list2 (Qsafe_charsets, list3 (Vcharset_ascii, Vcharset_control_1, |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4939 Vcharset_latin_iso8859_1)))); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4940 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4941 #else |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4942 Qnil)); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4943 #endif |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4944 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4945 Fmake_coding_system_internal |
| 428 | 4946 (Qbinary, Qno_conversion, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4947 build_defer_string ("Binary"), |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4948 nconc2 (list6 (Qdocumentation, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4949 build_defer_string ( |
| 771 | 4950 "This coding system is as close as it comes to doing no conversion.\n" |
| 4951 "On input, each byte is converted directly into the character\n" | |
| 4952 "with the corresponding code -- i.e. from the `ascii', `control-1',\n" | |
| 4953 "or `latin-1' character sets. On output, these characters are\n" | |
| 4954 "converted back to the corresponding bytes, and other characters\n" | |
| 4955 "are converted to the default character, i.e. `~'."), | |
|
4690
257b468bf2ca
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4956 Qeol_type, Qlf, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4957 Qmnemonic, build_ascstring ("Binary")), |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4958 #ifdef MULE |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4959 list2 (Qsafe_charsets, list3 (Vcharset_ascii, Vcharset_control_1, |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4960 Vcharset_latin_iso8859_1)))); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4961 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4962 #else |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4963 Qnil)); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4964 #endif |
| 428 | 4965 |
| 771 | 4966 /* Formerly aliased to raw-text! Completely bogus and not even the same |
| 4967 as FSF Emacs. */ | |
| 4968 Fdefine_coding_system_alias (Qno_conversion, Qbinary); | |
| 4969 Fdefine_coding_system_alias (intern ("no-conversion-unix"), | |
| 4970 intern ("raw-text-unix")); | |
| 4971 Fdefine_coding_system_alias (intern ("no-conversion-dos"), | |
| 4972 intern ("raw-text-dos")); | |
| 4973 Fdefine_coding_system_alias (intern ("no-conversion-mac"), | |
| 4974 intern ("raw-text-mac")); | |
| 4975 | |
| 1318 | 4976 /* These three below will get their defaults set correctly |
| 4977 in code-init.el. We init them now so we can handle stuff at dump | |
| 771 | 4978 time before we get to code-init.el. */ |
| 1318 | 4979 Fdefine_coding_system_alias (Qnative, Qbinary); |
| 440 | 4980 Fdefine_coding_system_alias (Qterminal, Qbinary); |
| 4981 Fdefine_coding_system_alias (Qkeyboard, Qbinary); | |
| 4982 | |
| 1318 | 4983 Fdefine_coding_system_alias (Qfile_name, Qnative); |
| 771 | 4984 Fdefine_coding_system_alias (Qidentity, Qconvert_eol_lf); |
| 4985 | |
| 428 | 4986 /* Need this for bootstrapping */ |
| 771 | 4987 coding_category_system[detector_category_no_conversion] = |
| 428 | 4988 Fget_coding_system (Qraw_text); |
| 4989 } |