Mercurial > hg > xemacs-beta
annotate src/file-coding.c @ 5581:56144c8593a8
Mechanically change INT to FIXNUM in our sources.
src/ChangeLog addition:
2011-10-09 Aidan Kehoe <kehoea@parhasard.net>
[...]
Mechanically change INT (where it refers to non-bignum Lisp
integers) to FIXNUM in our sources. Done for the following
functions, enums, and macros: Lisp_Type_Int_Even,
Lisp_Type_Int_Odd, INT_GCBITS, INT_VALBITS, make_int(), INTP(),
XINT(), CHECK_INT(), XREALINT(), INT_PLUS(), INT_MINUS(),
EMACS_INT_MAX (to MOST_POSITIVE_FIXNUM), EMACS_INT_MIN (to
MOST_NEGATIVE_FIXNUM), NUMBER_FITS_IN_AN_EMACS_INT() to
NUMBER_FITS_IN_A_FIXNUM(), XFLOATINT, XCHAR_OR_INT, INT_OR_FLOAT.
The EMACS_INT typedef was not changed, it does not describe
non-bignum Lisp integers.
Script that did the change available in
http://mid.gmane.org/20067.17650.181273.12014@parhasard.net .
modules/ChangeLog addition:
2011-10-09 Aidan Kehoe <kehoea@parhasard.net>
[...]
Mechanically change INT to FIXNUM, where the usage describes non-bignum
Lisp integers. See the src/ChangeLog entry for more details.
man/ChangeLog addition:
2011-10-09 Aidan Kehoe <kehoea@parhasard.net>
* internals/internals.texi (How Lisp Objects Are Represented in C):
* internals/internals.texi (Integers and Characters):
Mechanically change INT to FIXNUM, where the usage describes non-bignum
Lisp integers.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Sun, 09 Oct 2011 09:51:57 +0100 |
| parents | 4dee0387b9de |
| children | dae33b5feffe |
| 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 | |
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9 XEmacs is free software: you can redistribute it and/or modify it |
| 428 | 10 under the terms of the GNU General Public License as published by the |
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11 Free Software Foundation, either version 3 of the License, or (at your |
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12 option) any later version. |
| 428 | 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 | |
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20 along with XEmacs. If not, see <http://www.gnu.org/licenses/>. */ |
| 428 | 21 |
| 771 | 22 /* Synched up with: Not in FSF. */ |
| 23 | |
| 24 /* Authorship: | |
| 25 | |
| 26 Current primary author: Ben Wing <ben@xemacs.org> | |
| 27 | |
| 28 Rewritten by Ben Wing <ben@xemacs.org>, based originally on coding.c | |
| 29 from Mule 2.? but probably does not share one line of code with that | |
| 30 original source. Rewriting work started around Dec. 1994. or Jan. 1995. | |
| 31 Proceeded in earnest till Nov. 1995. | |
| 32 | |
| 33 Around Feb. 17, 1998, Andy Piper renamed what was then mule-coding.c to | |
| 34 file-coding.c, with the intention of using it to do end-of-line conversion | |
| 35 on non-MULE machines (specifically, on Windows machines). He separated | |
| 36 out the MULE stuff from non-MULE using ifdef's, and searched throughout | |
| 37 the rest of the source tree looking for coding-system-related code that | |
| 38 was ifdef MULE but should be ifdef HAVE_CODING_SYSTEMS. | |
| 39 | |
| 40 Sept. 4 - 8, 1998, Tomohiko Morioka added the UCS_4 and UTF_8 coding system | |
| 41 types, providing a primitive means of decoding and encoding externally- | |
| 42 formatted Unicode/UCS_4 and Unicode/UTF_8 data. | |
| 43 | |
| 44 January 25, 2000, Martin Buchholz redid and fleshed out the coding | |
| 45 system alias handling that was first added in prototype form by | |
| 46 Hrjove Niksic, April 15, 1999. | |
| 47 | |
| 48 April to May 2000, Ben Wing: More major reorganization. Adding features | |
| 49 needed for MS Windows (multibyte, unicode, unicode-to-multibyte), the | |
| 50 "chain" coding system for chaining two together, and doing a lot of | |
| 51 reorganization in preparation for properly abstracting out the different | |
| 52 coding system types. | |
| 53 | |
| 54 June 2001, Ben Wing: Added Unicode support. Eliminated previous | |
| 55 junky Unicode translation support. | |
| 56 | |
| 57 August 2001, Ben Wing: Moved Unicode support to unicode.c. Finished | |
| 58 abstracting everything except detection, which is hard to abstract (see | |
| 59 just below). | |
| 60 | |
| 61 September 2001, Ben Wing: Moved Mule code to mule-coding.c, Windows code | |
| 62 to intl-win32.c. Lots more rewriting; very little code is untouched | |
| 63 from before April 2000. Abstracted the detection code, added multiple | |
| 64 levels of likelihood to increase the reliability of the algorithm. | |
| 65 | |
| 66 October 2001, Ben Wing: HAVE_CODING_SYSTEMS is always now defined. | |
| 67 Removed the conditionals. | |
| 68 */ | |
| 69 | |
| 428 | 70 #include <config.h> |
| 71 #include "lisp.h" | |
| 72 | |
| 73 #include "buffer.h" | |
| 74 #include "elhash.h" | |
| 75 #include "insdel.h" | |
| 76 #include "lstream.h" | |
| 440 | 77 #include "opaque.h" |
| 771 | 78 #include "file-coding.h" |
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79 #include "extents.h" |
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80 #include "rangetab.h" |
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81 #include "chartab.h" |
| 771 | 82 |
| 83 #ifdef HAVE_ZLIB | |
| 84 #include "zlib.h" | |
| 428 | 85 #endif |
| 86 | |
| 87 Lisp_Object Vkeyboard_coding_system; | |
| 88 Lisp_Object Vterminal_coding_system; | |
| 89 Lisp_Object Vcoding_system_for_read; | |
| 90 Lisp_Object Vcoding_system_for_write; | |
| 91 Lisp_Object Vfile_name_coding_system; | |
| 92 | |
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93 Lisp_Object Qaliases, Qcharset_skip_chars_string; |
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94 |
| 771 | 95 #ifdef DEBUG_XEMACS |
| 96 Lisp_Object Vdebug_coding_detection; | |
| 440 | 97 #endif |
| 771 | 98 |
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99 #ifdef MULE |
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100 extern Lisp_Object Vcharset_ascii, Vcharset_control_1, |
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101 Vcharset_latin_iso8859_1; |
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102 #endif |
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103 |
| 771 | 104 typedef struct coding_system_type_entry |
| 105 { | |
| 106 struct coding_system_methods *meths; | |
| 107 } coding_system_type_entry; | |
| 108 | |
| 109 typedef struct | |
| 110 { | |
| 111 Dynarr_declare (coding_system_type_entry); | |
| 112 } coding_system_type_entry_dynarr; | |
| 113 | |
| 114 static coding_system_type_entry_dynarr *the_coding_system_type_entry_dynarr; | |
| 115 | |
| 1204 | 116 static const struct memory_description cste_description_1[] = { |
| 2551 | 117 { XD_BLOCK_PTR, offsetof (coding_system_type_entry, meths), 1, |
| 118 { &coding_system_methods_description } }, | |
| 771 | 119 { XD_END } |
| 120 }; | |
| 121 | |
| 1204 | 122 static const struct sized_memory_description cste_description = { |
| 771 | 123 sizeof (coding_system_type_entry), |
| 124 cste_description_1 | |
| 125 }; | |
| 126 | |
| 1204 | 127 static const struct memory_description csted_description_1[] = { |
| 771 | 128 XD_DYNARR_DESC (coding_system_type_entry_dynarr, &cste_description), |
| 428 | 129 { XD_END } |
| 130 }; | |
| 131 | |
| 1204 | 132 static const struct sized_memory_description csted_description = { |
| 771 | 133 sizeof (coding_system_type_entry_dynarr), |
| 134 csted_description_1 | |
| 135 }; | |
| 136 | |
| 137 static Lisp_Object Vcoding_system_type_list; | |
| 138 | |
| 139 /* Coding system currently associated with each coding category. */ | |
| 140 Lisp_Object coding_category_system[MAX_DETECTOR_CATEGORIES]; | |
| 141 | |
| 142 /* Table of all coding categories in decreasing order of priority. | |
| 143 This describes a permutation of the possible coding categories. */ | |
| 144 int coding_category_by_priority[MAX_DETECTOR_CATEGORIES]; | |
| 145 | |
| 146 /* Value used with to give a unique name to nameless coding systems */ | |
| 147 int coding_system_tick; | |
| 148 | |
| 149 int coding_detector_count; | |
| 150 int coding_detector_category_count; | |
| 151 | |
| 152 detector_dynarr *all_coding_detectors; | |
| 153 | |
| 1204 | 154 static const struct memory_description struct_detector_category_description_1[] |
| 771 | 155 = |
| 156 { | |
| 157 { XD_LISP_OBJECT, offsetof (struct detector_category, sym) }, | |
| 158 { XD_END } | |
| 159 }; | |
| 160 | |
| 1204 | 161 static const struct sized_memory_description struct_detector_category_description = |
| 771 | 162 { |
| 163 sizeof (struct detector_category), | |
| 164 struct_detector_category_description_1 | |
| 428 | 165 }; |
| 166 | |
| 1204 | 167 static const struct memory_description detector_category_dynarr_description_1[] = |
| 771 | 168 { |
| 169 XD_DYNARR_DESC (detector_category_dynarr, | |
| 170 &struct_detector_category_description), | |
| 171 { XD_END } | |
| 172 }; | |
| 173 | |
| 1204 | 174 static const struct sized_memory_description detector_category_dynarr_description = { |
| 771 | 175 sizeof (detector_category_dynarr), |
| 176 detector_category_dynarr_description_1 | |
| 177 }; | |
| 178 | |
| 1204 | 179 static const struct memory_description struct_detector_description_1[] |
| 771 | 180 = |
| 181 { | |
| 2367 | 182 { XD_BLOCK_PTR, offsetof (struct detector, cats), 1, |
| 2551 | 183 { &detector_category_dynarr_description } }, |
| 771 | 184 { XD_END } |
| 185 }; | |
| 186 | |
| 1204 | 187 static const struct sized_memory_description struct_detector_description = |
| 771 | 188 { |
| 189 sizeof (struct detector), | |
| 190 struct_detector_description_1 | |
| 191 }; | |
| 192 | |
| 1204 | 193 static const struct memory_description detector_dynarr_description_1[] = |
| 771 | 194 { |
| 195 XD_DYNARR_DESC (detector_dynarr, &struct_detector_description), | |
| 196 { XD_END } | |
| 197 }; | |
| 198 | |
| 1204 | 199 static const struct sized_memory_description detector_dynarr_description = { |
| 771 | 200 sizeof (detector_dynarr), |
| 201 detector_dynarr_description_1 | |
| 202 }; | |
| 428 | 203 |
| 204 Lisp_Object Qcoding_systemp; | |
| 205 | |
| 771 | 206 Lisp_Object Qraw_text; |
| 428 | 207 |
| 208 Lisp_Object Qmnemonic, Qeol_type; | |
| 209 Lisp_Object Qcr, Qcrlf, Qlf; | |
| 210 Lisp_Object Qeol_cr, Qeol_crlf, Qeol_lf; | |
| 211 Lisp_Object Qpost_read_conversion; | |
| 212 Lisp_Object Qpre_write_conversion; | |
| 213 | |
| 771 | 214 Lisp_Object Qtranslation_table_for_decode; |
| 215 Lisp_Object Qtranslation_table_for_encode; | |
| 216 Lisp_Object Qsafe_chars; | |
| 217 Lisp_Object Qsafe_charsets; | |
| 218 Lisp_Object Qmime_charset; | |
| 219 Lisp_Object Qvalid_codes; | |
| 220 | |
| 221 Lisp_Object Qno_conversion; | |
| 222 Lisp_Object Qconvert_eol; | |
| 440 | 223 Lisp_Object Qescape_quoted; |
| 771 | 224 Lisp_Object Qencode, Qdecode; |
| 225 | |
| 226 Lisp_Object Qconvert_eol_lf, Qconvert_eol_cr, Qconvert_eol_crlf; | |
| 227 Lisp_Object Qconvert_eol_autodetect; | |
| 228 | |
| 229 Lisp_Object Qnear_certainty, Qquite_probable, Qsomewhat_likely; | |
| 1494 | 230 Lisp_Object Qslightly_likely; |
| 771 | 231 Lisp_Object Qas_likely_as_unlikely, Qsomewhat_unlikely, Qquite_improbable; |
| 232 Lisp_Object Qnearly_impossible; | |
| 233 | |
| 234 Lisp_Object Qdo_eol, Qdo_coding; | |
| 235 | |
| 236 Lisp_Object Qcanonicalize_after_coding; | |
| 237 | |
| 1347 | 238 Lisp_Object QScoding_system_cookie; |
| 239 | |
| 4303 | 240 Lisp_Object Qposix_charset_to_coding_system_hash; |
| 241 | |
| 771 | 242 /* This is used to convert autodetected coding systems into existing |
| 243 systems. For example, the chain undecided->convert-eol-autodetect may | |
| 244 have its separate parts detected as mswindows-multibyte and | |
| 245 convert-eol-crlf, and the result needs to be mapped to | |
| 246 mswindows-multibyte-dos. */ | |
| 247 /* #### It's not clear we need this whole chain-canonicalize mechanism | |
| 248 any more. */ | |
| 249 static Lisp_Object Vchain_canonicalize_hash_table; | |
| 250 | |
| 251 #ifdef HAVE_ZLIB | |
| 252 Lisp_Object Qgzip; | |
| 428 | 253 #endif |
| 771 | 254 |
| 2297 | 255 /* Maps symbols (coding system names) to either coding system objects or |
| 256 (for aliases) other names. */ | |
| 771 | 257 static Lisp_Object Vcoding_system_hash_table; |
| 428 | 258 |
| 259 int enable_multibyte_characters; | |
| 260 | |
| 261 EXFUN (Fcopy_coding_system, 2); | |
| 262 | |
| 263 | |
| 264 /************************************************************************/ | |
| 771 | 265 /* Coding system object methods */ |
| 428 | 266 /************************************************************************/ |
| 267 | |
| 268 static Lisp_Object | |
| 269 mark_coding_system (Lisp_Object obj) | |
| 270 { | |
| 271 Lisp_Coding_System *codesys = XCODING_SYSTEM (obj); | |
| 272 | |
| 1204 | 273 #define MARKED_SLOT(x) mark_object (codesys->x); |
| 274 #include "coding-system-slots.h" | |
| 771 | 275 |
| 276 MAYBE_CODESYSMETH (codesys, mark, (obj)); | |
| 428 | 277 |
| 1204 | 278 return Qnil; |
| 428 | 279 } |
| 280 | |
| 281 static void | |
| 771 | 282 print_coding_system_properties (Lisp_Object obj, Lisp_Object printcharfun) |
| 283 { | |
| 284 Lisp_Coding_System *c = XCODING_SYSTEM (obj); | |
| 285 print_internal (c->methods->type, printcharfun, 1); | |
| 286 MAYBE_CODESYSMETH (c, print, (obj, printcharfun, 1)); | |
| 287 if (CODING_SYSTEM_EOL_TYPE (c) != EOL_AUTODETECT) | |
| 288 write_fmt_string_lisp (printcharfun, " eol-type=%s", | |
| 289 1, Fcoding_system_property (obj, Qeol_type)); | |
| 290 } | |
| 291 | |
| 292 static void | |
| 428 | 293 print_coding_system (Lisp_Object obj, Lisp_Object printcharfun, |
| 2286 | 294 int UNUSED (escapeflag)) |
| 428 | 295 { |
| 296 Lisp_Coding_System *c = XCODING_SYSTEM (obj); | |
| 297 if (print_readably) | |
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298 printing_unreadable_lisp_object (obj, 0); |
| 771 | 299 |
| 300 write_fmt_string_lisp (printcharfun, "#<coding-system %s ", 1, c->name); | |
| 301 print_coding_system_properties (obj, printcharfun); | |
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302 write_ascstring (printcharfun, ">"); |
| 428 | 303 } |
| 304 | |
| 771 | 305 /* Print an abbreviated version of a coding system (but still containing |
| 306 all the information), for use within a coding system print method. */ | |
| 307 | |
| 308 static void | |
| 309 print_coding_system_in_print_method (Lisp_Object cs, Lisp_Object printcharfun, | |
| 2286 | 310 int UNUSED (escapeflag)) |
| 771 | 311 { |
| 800 | 312 write_fmt_string_lisp (printcharfun, "%s[", 1, XCODING_SYSTEM_NAME (cs)); |
| 771 | 313 print_coding_system_properties (cs, printcharfun); |
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314 write_ascstring (printcharfun, "]"); |
| 771 | 315 } |
| 316 | |
| 3263 | 317 #ifndef NEW_GC |
| 428 | 318 static void |
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319 finalize_coding_system (Lisp_Object obj) |
| 428 | 320 { |
| 321 /* Since coding systems never go away, this function is not | |
| 322 necessary. But it would be necessary if we changed things | |
| 323 so that coding systems could go away. */ | |
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324 MAYBE_XCODESYSMETH (obj, finalize, (obj)); |
| 771 | 325 } |
| 3263 | 326 #endif /* not NEW_GC */ |
| 771 | 327 |
| 328 static Bytecount | |
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329 sizeof_coding_system (Lisp_Object obj) |
| 771 | 330 { |
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331 const Lisp_Coding_System *p = XCODING_SYSTEM (obj); |
| 771 | 332 return offsetof (Lisp_Coding_System, data) + p->methods->extra_data_size; |
| 428 | 333 } |
| 334 | |
| 1204 | 335 static const struct memory_description coding_system_methods_description_1[] |
| 771 | 336 = { |
| 337 { XD_LISP_OBJECT, | |
| 338 offsetof (struct coding_system_methods, type) }, | |
| 339 { XD_LISP_OBJECT, | |
| 340 offsetof (struct coding_system_methods, predicate_symbol) }, | |
| 341 { XD_END } | |
| 342 }; | |
| 343 | |
| 1204 | 344 const struct sized_memory_description coding_system_methods_description = { |
| 771 | 345 sizeof (struct coding_system_methods), |
| 346 coding_system_methods_description_1 | |
| 347 }; | |
| 348 | |
| 1204 | 349 static const struct sized_memory_description coding_system_extra_description_map[] = |
| 350 { | |
| 351 { offsetof (Lisp_Coding_System, methods) }, | |
| 352 { offsetof (struct coding_system_methods, extra_description) }, | |
| 353 { -1 }, | |
| 771 | 354 }; |
| 355 | |
| 1204 | 356 static const struct memory_description coding_system_description[] = |
| 428 | 357 { |
| 2367 | 358 { XD_BLOCK_PTR, offsetof (Lisp_Coding_System, methods), 1, |
| 2551 | 359 { &coding_system_methods_description } }, |
| 1204 | 360 #define MARKED_SLOT(x) { XD_LISP_OBJECT, offsetof (Lisp_Coding_System, x) }, |
| 361 #define MARKED_SLOT_ARRAY(slot, size) \ | |
| 362 { XD_LISP_OBJECT_ARRAY, offsetof (Lisp_Coding_System, slot), size }, | |
| 363 #include "coding-system-slots.h" | |
| 2367 | 364 { XD_BLOCK_ARRAY, offsetof (Lisp_Coding_System, data), 1, |
| 2551 | 365 { coding_system_extra_description_map } }, |
| 1204 | 366 { XD_END } |
| 771 | 367 }; |
| 368 | |
| 1204 | 369 static const struct memory_description coding_system_empty_extra_description_1[] = |
| 370 { | |
| 371 { XD_END } | |
| 372 }; | |
| 373 | |
| 374 const struct sized_memory_description coding_system_empty_extra_description = { | |
| 375 0, coding_system_empty_extra_description_1 | |
| 376 }; | |
| 377 | |
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378 DEFINE_DUMPABLE_SIZABLE_LISP_OBJECT ("coding-system", coding_system, |
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379 mark_coding_system, |
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380 print_coding_system, |
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381 IF_OLD_GC (finalize_coding_system), |
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382 0, 0, coding_system_description, |
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383 sizeof_coding_system, |
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384 Lisp_Coding_System); |
| 771 | 385 |
| 386 /************************************************************************/ | |
| 387 /* Creating coding systems */ | |
| 388 /************************************************************************/ | |
| 389 | |
| 390 static struct coding_system_methods * | |
| 391 decode_coding_system_type (Lisp_Object type, Error_Behavior errb) | |
| 428 | 392 { |
| 771 | 393 int i; |
| 394 | |
| 395 for (i = 0; i < Dynarr_length (the_coding_system_type_entry_dynarr); i++) | |
| 428 | 396 { |
| 771 | 397 if (EQ (type, |
| 398 Dynarr_at (the_coding_system_type_entry_dynarr, i).meths->type)) | |
| 399 return Dynarr_at (the_coding_system_type_entry_dynarr, i).meths; | |
| 428 | 400 } |
| 771 | 401 |
| 402 maybe_invalid_constant ("Invalid coding system type", type, | |
| 403 Qcoding_system, errb); | |
| 404 | |
| 405 return 0; | |
| 428 | 406 } |
| 407 | |
| 771 | 408 static int |
| 409 valid_coding_system_type_p (Lisp_Object type) | |
| 428 | 410 { |
| 771 | 411 return decode_coding_system_type (type, ERROR_ME_NOT) != 0; |
| 412 } | |
| 413 | |
|
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414 #ifdef MULE |
|
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415 static Lisp_Object Vdefault_query_coding_region_chartab_cache; |
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|
416 |
|
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417 /* Non-static because it's used in INITIALIZE_CODING_SYSTEM_TYPE_WITH_DATA. */ |
|
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418 Lisp_Object |
|
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419 default_query_method (Lisp_Object codesys, struct buffer *buf, |
|
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420 Charbpos end, int flags) |
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421 { |
|
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422 Charbpos pos = BUF_PT (buf), fail_range_start, fail_range_end; |
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423 Charbpos pos_byte = BYTE_BUF_PT (buf); |
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424 Lisp_Object safe_charsets = XCODING_SYSTEM_SAFE_CHARSETS (codesys); |
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425 Lisp_Object safe_chars = XCODING_SYSTEM_SAFE_CHARS (codesys), |
|
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426 result = Qnil; |
|
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427 enum query_coding_failure_reasons failed_reason, |
|
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428 previous_failed_reason = query_coding_succeeded; |
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429 |
|
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430 /* safe-charsets of t means the coding system can encode everything. */ |
|
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431 if (EQ (Qnil, safe_chars)) |
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432 { |
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433 if (EQ (Qt, safe_charsets)) |
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434 { |
|
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435 return Qnil; |
|
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|
436 } |
|
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|
437 |
|
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|
438 /* If we've no information on what characters the coding system can |
|
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|
439 encode, give up. */ |
|
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|
440 if (EQ (Qnil, safe_charsets) && EQ (Qnil, safe_chars)) |
|
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|
441 { |
|
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442 return Qunbound; |
|
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|
443 } |
|
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|
444 |
|
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|
445 safe_chars = Fgethash (safe_charsets, |
|
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|
446 Vdefault_query_coding_region_chartab_cache, |
|
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|
447 Qnil); |
|
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changeset
|
448 if (NILP (safe_chars)) |
|
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|
449 { |
|
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|
450 safe_chars = Fmake_char_table (Qgeneric); |
|
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|
451 { |
|
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|
452 EXTERNAL_LIST_LOOP_2 (safe_charset, safe_charsets) |
|
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changeset
|
453 Fput_char_table (safe_charset, Qt, safe_chars); |
|
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|
454 } |
|
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changeset
|
455 |
|
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|
456 Fputhash (safe_charsets, safe_chars, |
|
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|
457 Vdefault_query_coding_region_chartab_cache); |
|
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|
458 } |
|
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|
459 } |
|
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|
460 |
|
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|
461 if (flags & QUERY_METHOD_HIGHLIGHT && |
|
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|
462 /* If we're being called really early, live without highlights getting |
|
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|
463 cleared properly: */ |
|
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|
464 !(UNBOUNDP (XSYMBOL (Qquery_coding_clear_highlights)->function))) |
|
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465 { |
|
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|
466 /* It's okay to call Lisp here, the only non-stack object we may have |
|
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diff
changeset
|
467 allocated up to this point is safe_chars, and that's |
|
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changeset
|
468 reachable from its entry in |
|
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changeset
|
469 Vdefault_query_coding_region_chartab_cache */ |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
470 call3 (Qquery_coding_clear_highlights, make_fixnum (pos), make_fixnum (end), |
|
4690
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|
471 wrap_buffer (buf)); |
|
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|
472 } |
|
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Move the #'query-coding-region implementation to C.
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changeset
|
473 |
|
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|
474 while (pos < end) |
|
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|
475 { |
|
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|
476 Ichar ch = BYTE_BUF_FETCH_CHAR (buf, pos_byte); |
|
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changeset
|
477 if (!EQ (Qnil, get_char_table (ch, safe_chars))) |
|
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|
478 { |
|
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|
479 pos++; |
|
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|
480 INC_BYTEBPOS (buf, pos_byte); |
|
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|
481 } |
|
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changeset
|
482 else |
|
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|
483 { |
|
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changeset
|
484 fail_range_start = pos; |
|
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changeset
|
485 while ((pos < end) && |
|
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changeset
|
486 (EQ (Qnil, get_char_table (ch, safe_chars)) |
|
4839
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Ben Wing <ben@xemacs.org>
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4830
diff
changeset
|
487 && (failed_reason = query_coding_unencodable, |
|
5f1c6ca4d05e
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diff
changeset
|
488 (previous_failed_reason == query_coding_succeeded |
|
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changeset
|
489 || previous_failed_reason == failed_reason)))) |
|
4690
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|
490 { |
|
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|
491 pos++; |
|
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changeset
|
492 INC_BYTEBPOS (buf, pos_byte); |
|
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|
493 ch = BYTE_BUF_FETCH_CHAR (buf, pos_byte); |
|
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changeset
|
494 previous_failed_reason = failed_reason; |
|
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|
495 } |
|
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changeset
|
496 |
|
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|
497 if (fail_range_start == pos) |
|
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|
498 { |
|
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changeset
|
499 /* The character can actually be encoded; move on. */ |
|
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|
500 pos++; |
|
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|
501 INC_BYTEBPOS (buf, pos_byte); |
|
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|
502 } |
|
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|
503 else |
|
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|
504 { |
|
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changeset
|
505 assert (previous_failed_reason == query_coding_unencodable); |
|
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|
506 |
|
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|
507 if (flags & QUERY_METHOD_ERRORP) |
|
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|
508 { |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
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diff
changeset
|
509 signal_error_2 |
|
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Mule-izing, various fixes related to char * arguments
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changeset
|
510 (Qtext_conversion_error, |
|
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changeset
|
511 "Cannot encode using coding system", |
|
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changeset
|
512 make_string_from_buffer (buf, fail_range_start, |
|
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diff
changeset
|
513 pos - fail_range_start), |
|
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diff
changeset
|
514 XCODING_SYSTEM_NAME (codesys)); |
|
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|
515 } |
|
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|
516 |
|
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|
517 if (NILP (result)) |
|
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|
518 { |
|
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|
519 result = Fmake_range_table (Qstart_closed_end_open); |
|
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520 } |
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521 |
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522 fail_range_end = pos; |
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523 |
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524 Fput_range_table (make_fixnum (fail_range_start), |
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525 make_fixnum (fail_range_end), |
|
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526 Qunencodable, |
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527 result); |
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528 previous_failed_reason = query_coding_succeeded; |
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529 |
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530 if (flags & QUERY_METHOD_HIGHLIGHT) |
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531 { |
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532 Lisp_Object extent |
|
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533 = Fmake_extent (make_fixnum (fail_range_start), |
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534 make_fixnum (fail_range_end), |
|
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535 wrap_buffer (buf)); |
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536 |
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537 Fset_extent_priority |
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538 (extent, make_fixnum (2 + mouse_highlight_priority)); |
|
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539 Fset_extent_face (extent, Qquery_coding_warning_face); |
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540 } |
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541 } |
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542 } |
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543 } |
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544 |
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545 return result; |
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546 } |
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547 #else |
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548 Lisp_Object |
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549 default_query_method (Lisp_Object UNUSED (codesys), |
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550 struct buffer * UNUSED (buf), |
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551 Charbpos UNUSED (end), int UNUSED (flags)) |
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552 { |
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553 return Qnil; |
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554 } |
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555 #endif /* defined MULE */ |
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556 |
| 771 | 557 DEFUN ("valid-coding-system-type-p", Fvalid_coding_system_type_p, 1, 1, 0, /* |
| 558 Given a CODING-SYSTEM-TYPE, return non-nil if it is valid. | |
| 559 Valid types depend on how XEmacs was compiled but may include | |
| 3025 | 560 `undecided', `chain', `integer', `ccl', `iso2022', `big5', `shift-jis', |
| 561 `utf-16', `ucs-4', `utf-8', etc. | |
| 771 | 562 */ |
| 563 (coding_system_type)) | |
| 564 { | |
| 565 return valid_coding_system_type_p (coding_system_type) ? Qt : Qnil; | |
| 566 } | |
| 567 | |
| 568 DEFUN ("coding-system-type-list", Fcoding_system_type_list, 0, 0, 0, /* | |
| 569 Return a list of valid coding system types. | |
| 570 */ | |
| 571 ()) | |
| 572 { | |
| 573 return Fcopy_sequence (Vcoding_system_type_list); | |
| 574 } | |
| 575 | |
| 576 void | |
| 577 add_entry_to_coding_system_type_list (struct coding_system_methods *meths) | |
| 578 { | |
| 579 struct coding_system_type_entry entry; | |
| 580 | |
| 581 entry.meths = meths; | |
| 582 Dynarr_add (the_coding_system_type_entry_dynarr, entry); | |
| 583 Vcoding_system_type_list = Fcons (meths->type, Vcoding_system_type_list); | |
| 428 | 584 } |
| 585 | |
| 586 DEFUN ("coding-system-p", Fcoding_system_p, 1, 1, 0, /* | |
| 587 Return t if OBJECT is a coding system. | |
| 588 A coding system is an object that defines how text containing multiple | |
| 589 character sets is encoded into a stream of (typically 8-bit) bytes. | |
| 590 The coding system is used to decode the stream into a series of | |
| 591 characters (which may be from multiple charsets) when the text is read | |
| 592 from a file or process, and is used to encode the text back into the | |
| 593 same format when it is written out to a file or process. | |
| 594 | |
| 595 For example, many ISO2022-compliant coding systems (such as Compound | |
| 596 Text, which is used for inter-client data under the X Window System) | |
| 597 use escape sequences to switch between different charsets -- Japanese | |
| 598 Kanji, for example, is invoked with "ESC $ ( B"; ASCII is invoked | |
| 599 with "ESC ( B"; and Cyrillic is invoked with "ESC - L". See | |
| 600 `make-coding-system' for more information. | |
| 601 | |
| 602 Coding systems are normally identified using a symbol, and the | |
| 603 symbol is accepted in place of the actual coding system object whenever | |
| 604 a coding system is called for. (This is similar to how faces work.) | |
| 605 */ | |
| 606 (object)) | |
| 607 { | |
| 608 return CODING_SYSTEMP (object) ? Qt : Qnil; | |
| 609 } | |
| 610 | |
| 4303 | 611 static Lisp_Object |
| 612 find_coding_system (Lisp_Object coding_system_or_name, | |
| 613 int do_autoloads) | |
| 614 { | |
| 615 Lisp_Object lookup; | |
| 616 | |
| 617 if (NILP (coding_system_or_name)) | |
| 618 coding_system_or_name = Qbinary; | |
| 619 else if (CODING_SYSTEMP (coding_system_or_name)) | |
| 620 return coding_system_or_name; | |
| 621 else | |
| 622 CHECK_SYMBOL (coding_system_or_name); | |
| 623 | |
| 624 while (1) | |
| 625 { | |
| 626 lookup = | |
| 627 Fgethash (coding_system_or_name, Vcoding_system_hash_table, Qnil); | |
| 628 | |
| 629 if (CONSP (lookup) && do_autoloads) | |
| 630 { | |
| 631 struct gcpro gcpro1; | |
| 632 int length; | |
| 633 DECLARE_EISTRING (desired_base); | |
| 634 DECLARE_EISTRING (warning_info); | |
| 635 | |
| 636 eicpy_lstr (desired_base, XSYMBOL_NAME (coding_system_or_name)); | |
| 637 | |
| 638 /* Work out the name of the base coding system. */ | |
| 639 length = eilen (desired_base); | |
| 640 if (length > (int)(sizeof ("-unix") - 1)) | |
| 641 { | |
| 642 if (0 == qxestrcmp ((UAscbyte *)"-unix", (eidata (desired_base)) | |
| 643 + (length - (sizeof ("-unix") - 1)))) | |
| 644 { | |
| 645 eidel (desired_base, length - (sizeof ("-unix") - 1), | |
| 646 -1, 5, 5); | |
| 647 } | |
| 648 } | |
| 649 else if (length > (int)(sizeof ("-dos") - 1)) | |
| 650 { | |
| 651 if ((0 == qxestrcmp ((UAscbyte *)"-dos", (eidata (desired_base)) | |
| 652 + (length - (sizeof ("-dos") - 1)))) || | |
| 653 (0 == qxestrcmp ((UAscbyte *)"-mac", (eidata (desired_base)) | |
| 654 + (length - (sizeof ("-mac") - 1))))) | |
| 655 { | |
| 656 eidel (desired_base, length - (sizeof ("-dos") - 1), -1, | |
| 657 4, 4); | |
| 658 } | |
| 659 } | |
| 660 | |
|
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661 coding_system_or_name = intern_istring (eidata (desired_base)); |
| 4303 | 662 |
| 663 /* Remove this coding system and its subsidiary coding | |
| 664 systems from the hash, to avoid calling this code recursively. */ | |
| 665 Fremhash (coding_system_or_name, Vcoding_system_hash_table); | |
| 666 Fremhash (add_suffix_to_symbol(coding_system_or_name, "-unix"), | |
| 667 Vcoding_system_hash_table); | |
| 668 Fremhash (add_suffix_to_symbol(coding_system_or_name, "-dos"), | |
| 669 Vcoding_system_hash_table); | |
| 670 Fremhash (add_suffix_to_symbol(coding_system_or_name, "-mac"), | |
| 671 Vcoding_system_hash_table); | |
| 672 | |
| 673 eicpy_ascii (warning_info, "Error autoloading coding system "); | |
| 674 eicat_lstr (warning_info, XSYMBOL_NAME (coding_system_or_name)); | |
| 675 | |
| 676 /* Keep around the form so it doesn't disappear from under | |
| 677 #'eval's feet. */ | |
| 678 GCPRO1 (lookup); | |
|
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679 call1_trapping_problems ((const CIbyte *) eidata (warning_info), |
| 4303 | 680 Qeval, lookup, 0); |
| 681 UNGCPRO; | |
| 682 | |
| 683 lookup = | |
| 684 Fgethash (coding_system_or_name, Vcoding_system_hash_table, Qnil); | |
| 685 } | |
| 686 | |
| 687 if (CODING_SYSTEMP (lookup) || NILP (lookup)) | |
| 688 return lookup; | |
| 689 | |
| 690 coding_system_or_name = lookup; | |
| 691 } | |
| 692 } | |
| 693 | |
| 428 | 694 DEFUN ("find-coding-system", Ffind_coding_system, 1, 1, 0, /* |
| 695 Retrieve the coding system of the given name. | |
| 696 | |
| 697 If CODING-SYSTEM-OR-NAME is a coding-system object, it is simply | |
| 698 returned. Otherwise, CODING-SYSTEM-OR-NAME should be a symbol. | |
| 699 If there is no such coding system, nil is returned. Otherwise the | |
| 700 associated coding system object is returned. | |
| 701 */ | |
| 702 (coding_system_or_name)) | |
| 703 { | |
| 4303 | 704 return find_coding_system(coding_system_or_name, 1); |
| 705 } | |
| 706 | |
| 707 DEFUN ("autoload-coding-system", Fautoload_coding_system, 2, 2, 0, /* | |
| 708 Define SYMBOL as a coding-system that is loaded on demand. | |
| 709 | |
| 710 FORM is a form to evaluate to define the coding-system. | |
| 711 */ | |
| 712 (symbol, form)) | |
| 713 { | |
| 714 Lisp_Object lookup; | |
| 715 | |
| 716 CHECK_SYMBOL (symbol); | |
| 717 CHECK_CONS (form); | |
| 718 | |
| 719 lookup = find_coding_system (symbol, 0); | |
| 720 | |
| 721 if (!NILP (lookup) && | |
| 722 /* Allow autoloads to be redefined. */ | |
| 723 !CONSP (lookup)) | |
| 440 | 724 { |
| 4303 | 725 invalid_operation ("Cannot redefine existing coding system", |
| 726 symbol); | |
| 440 | 727 } |
| 4303 | 728 |
| 729 Fputhash (symbol, form, Vcoding_system_hash_table); | |
| 730 Fputhash (add_suffix_to_symbol(symbol, "-unix"), form, | |
| 731 Vcoding_system_hash_table); | |
| 732 Fputhash (add_suffix_to_symbol(symbol, "-dos"), form, | |
| 733 Vcoding_system_hash_table); | |
| 734 Fputhash (add_suffix_to_symbol(symbol, "-mac"), form, | |
| 735 Vcoding_system_hash_table); | |
| 736 | |
| 737 /* Tell the POSIX locale infrastructure about this coding system (though | |
| 738 unfortunately it'll be too late for the startup locale sniffing. */ | |
| 739 if (!UNBOUNDP (Qposix_charset_to_coding_system_hash)) | |
| 740 { | |
| 741 Lisp_Object val = Fsymbol_value (Qposix_charset_to_coding_system_hash); | |
| 742 DECLARE_EISTRING (minimal_name); | |
| 743 Ibyte *full_name; | |
| 744 int len = XSTRING_LENGTH (XSYMBOL_NAME (symbol)), i; | |
| 745 | |
| 746 if (!NILP (val)) | |
| 747 { | |
| 748 full_name = XSTRING_DATA (XSYMBOL_NAME (symbol)); | |
| 749 for (i = 0; i < len; ++i) | |
| 750 { | |
| 751 if (full_name[i] >= '0' && full_name[i] <= '9') | |
| 752 { | |
| 753 eicat_ch (minimal_name, full_name[i]); | |
| 754 } | |
| 755 else if (full_name[i] >= 'a' && full_name[i] <= 'z') | |
| 756 { | |
| 757 eicat_ch (minimal_name, full_name[i]); | |
| 758 } | |
| 759 else if (full_name[i] >= 'A' && full_name[i] <= 'Z') | |
| 760 { | |
| 761 eicat_ch (minimal_name, full_name[i] + | |
| 762 ('a' - 'A')); | |
| 763 } | |
| 764 } | |
| 765 | |
| 766 if (eilen (minimal_name)) | |
| 767 { | |
| 768 CHECK_HASH_TABLE (val); | |
| 769 Fputhash (eimake_string(minimal_name), symbol, val); | |
| 770 } | |
| 771 } | |
| 772 } | |
| 773 | |
| 774 return Qt; | |
| 428 | 775 } |
| 776 | |
| 777 DEFUN ("get-coding-system", Fget_coding_system, 1, 1, 0, /* | |
| 778 Retrieve the coding system of the given name. | |
| 779 Same as `find-coding-system' except that if there is no such | |
| 780 coding system, an error is signaled instead of returning nil. | |
| 781 */ | |
| 782 (name)) | |
| 783 { | |
| 784 Lisp_Object coding_system = Ffind_coding_system (name); | |
| 785 | |
| 786 if (NILP (coding_system)) | |
| 563 | 787 invalid_argument ("No such coding system", name); |
| 428 | 788 return coding_system; |
| 789 } | |
| 790 | |
| 771 | 791 int |
| 792 coding_system_is_binary (Lisp_Object coding_system) | |
| 793 { | |
| 794 Lisp_Coding_System *cs = XCODING_SYSTEM (coding_system); | |
| 795 return | |
| 796 (EQ (CODING_SYSTEM_TYPE (cs), Qno_conversion) && | |
| 797 CODING_SYSTEM_EOL_TYPE (cs) == EOL_LF && | |
| 798 EQ (CODING_SYSTEM_POST_READ_CONVERSION (cs), Qnil) && | |
| 799 EQ (CODING_SYSTEM_PRE_WRITE_CONVERSION (cs), Qnil)); | |
| 800 } | |
| 801 | |
| 802 static Lisp_Object | |
| 803 coding_system_real_canonical (Lisp_Object cs) | |
| 804 { | |
| 805 if (!NILP (XCODING_SYSTEM_CANONICAL (cs))) | |
| 806 return XCODING_SYSTEM_CANONICAL (cs); | |
| 807 return cs; | |
| 808 } | |
| 809 | |
| 810 /* Return true if coding system is of the "standard" type that decodes | |
| 811 bytes into characters (suitable for decoding a text file). */ | |
| 812 int | |
| 813 coding_system_is_for_text_file (Lisp_Object coding_system) | |
| 814 { | |
| 815 return (XCODESYSMETH_OR_GIVEN | |
| 816 (coding_system, conversion_end_type, | |
| 817 (coding_system_real_canonical (coding_system)), | |
| 818 DECODES_BYTE_TO_CHARACTER) == | |
| 819 DECODES_BYTE_TO_CHARACTER); | |
| 820 } | |
| 821 | |
| 822 static int | |
| 823 decoding_source_sink_type_is_char (Lisp_Object cs, enum source_or_sink sex) | |
| 824 { | |
| 825 enum source_sink_type type = | |
| 826 XCODESYSMETH_OR_GIVEN (cs, conversion_end_type, | |
| 827 (coding_system_real_canonical (cs)), | |
| 828 DECODES_BYTE_TO_CHARACTER); | |
| 829 if (sex == CODING_SOURCE) | |
| 830 return (type == DECODES_CHARACTER_TO_CHARACTER || | |
| 831 type == DECODES_CHARACTER_TO_BYTE); | |
| 832 else | |
| 833 return (type == DECODES_CHARACTER_TO_CHARACTER || | |
| 834 type == DECODES_BYTE_TO_CHARACTER); | |
| 835 } | |
| 836 | |
| 837 static int | |
| 838 encoding_source_sink_type_is_char (Lisp_Object cs, enum source_or_sink sex) | |
| 839 { | |
| 840 return decoding_source_sink_type_is_char (cs, | |
| 841 /* Sex change */ | |
| 842 sex == CODING_SOURCE ? | |
| 843 CODING_SINK : CODING_SOURCE); | |
| 844 } | |
| 845 | |
| 846 /* Like Ffind_coding_system() but check that the coding system is of the | |
| 847 "standard" type that decodes bytes into characters (suitable for | |
| 848 decoding a text file), and if not, returns an appropriate wrapper that | |
| 849 does. Also, if EOL_WRAP is non-zero, check whether this coding system | |
| 850 wants EOL auto-detection, and if so, wrap with a convert-eol coding | |
| 851 system to do this. */ | |
| 852 | |
| 853 Lisp_Object | |
| 854 find_coding_system_for_text_file (Lisp_Object name, int eol_wrap) | |
| 855 { | |
| 856 Lisp_Object coding_system = Ffind_coding_system (name); | |
| 857 Lisp_Object wrapper = coding_system; | |
| 858 | |
| 859 if (NILP (coding_system)) | |
| 860 return Qnil; | |
| 861 if (!coding_system_is_for_text_file (coding_system)) | |
| 862 { | |
| 863 wrapper = XCODING_SYSTEM_TEXT_FILE_WRAPPER (coding_system); | |
| 864 if (NILP (wrapper)) | |
| 865 { | |
| 866 Lisp_Object chain; | |
| 867 if (!decoding_source_sink_type_is_char (coding_system, CODING_SINK)) | |
| 868 chain = list2 (coding_system, Qbinary); | |
| 869 else | |
| 870 chain = list1 (coding_system); | |
| 871 if (decoding_source_sink_type_is_char (coding_system, CODING_SOURCE)) | |
| 872 chain = Fcons (Qbinary, chain); | |
| 873 wrapper = | |
| 874 make_internal_coding_system | |
| 875 (coding_system, | |
| 876 "internal-text-file-wrapper", | |
| 877 Qchain, | |
| 878 Qunbound, list4 (Qchain, chain, | |
| 879 Qcanonicalize_after_coding, coding_system)); | |
| 880 XCODING_SYSTEM_TEXT_FILE_WRAPPER (coding_system) = wrapper; | |
| 881 } | |
| 882 } | |
| 883 | |
| 884 if (!eol_wrap || XCODING_SYSTEM_EOL_TYPE (coding_system) != EOL_AUTODETECT) | |
| 885 return wrapper; | |
| 886 | |
| 887 coding_system = wrapper; | |
| 888 wrapper = XCODING_SYSTEM_AUTO_EOL_WRAPPER (coding_system); | |
| 889 if (!NILP (wrapper)) | |
| 890 return wrapper; | |
| 891 wrapper = | |
| 892 make_internal_coding_system | |
| 893 (coding_system, | |
| 894 "internal-auto-eol-wrapper", | |
| 895 Qundecided, Qunbound, | |
| 896 list4 (Qcoding_system, coding_system, | |
| 897 Qdo_eol, Qt)); | |
| 898 XCODING_SYSTEM_AUTO_EOL_WRAPPER (coding_system) = wrapper; | |
| 899 return wrapper; | |
| 900 } | |
| 901 | |
| 902 /* Like Fget_coding_system() but verify that the coding system is of the | |
| 903 "standard" type that decodes bytes into characters (suitable for | |
| 904 decoding a text file), and if not, returns an appropriate wrapper that | |
| 905 does. Also, if EOL_WRAP is non-zero, check whether this coding system | |
| 906 wants EOL auto-detection, and if so, wrap with a convert-eol coding | |
| 907 system to do this. */ | |
| 908 | |
| 909 Lisp_Object | |
| 910 get_coding_system_for_text_file (Lisp_Object name, int eol_wrap) | |
| 911 { | |
| 912 Lisp_Object coding_system = find_coding_system_for_text_file (name, | |
| 913 eol_wrap); | |
| 914 if (NILP (coding_system)) | |
| 915 invalid_argument ("No such coding system", name); | |
| 916 return coding_system; | |
| 917 } | |
| 918 | |
| 919 /* We store the coding systems in hash tables with the names as the | |
| 920 key and the actual coding system object as the value. Occasionally | |
| 921 we need to use them in a list format. These routines provide us | |
| 922 with that. */ | |
| 428 | 923 struct coding_system_list_closure |
| 924 { | |
| 925 Lisp_Object *coding_system_list; | |
| 771 | 926 int normal; |
| 927 int internal; | |
| 428 | 928 }; |
| 929 | |
| 930 static int | |
| 4303 | 931 add_coding_system_to_list_mapper (Lisp_Object key, Lisp_Object value, |
| 428 | 932 void *coding_system_list_closure) |
| 933 { | |
| 934 /* This function can GC */ | |
| 935 struct coding_system_list_closure *cscl = | |
| 936 (struct coding_system_list_closure *) coding_system_list_closure; | |
| 937 Lisp_Object *coding_system_list = cscl->coding_system_list; | |
| 938 | |
| 771 | 939 /* We can't just use VALUE because KEY might be an alias, and we need |
| 4303 | 940 the real coding system object. |
| 941 | |
| 942 Autoloaded coding systems have conses for their values, and can't be | |
| 943 internal coding systems, or coding system aliases. */ | |
| 944 if (CONSP (value) || | |
| 945 (XCODING_SYSTEM (Ffind_coding_system (key))->internal_p ? | |
| 946 cscl->internal : cscl->normal)) | |
| 771 | 947 *coding_system_list = Fcons (key, *coding_system_list); |
| 428 | 948 return 0; |
| 949 } | |
| 950 | |
| 2297 | 951 /* #### should we specify a conventional for "all coding systems"? */ |
| 771 | 952 DEFUN ("coding-system-list", Fcoding_system_list, 0, 1, 0, /* |
| 428 | 953 Return a list of the names of all defined coding systems. |
| 771 | 954 If INTERNAL is nil, only the normal (non-internal) coding systems are |
| 955 included. (Internal coding systems are created for various internal | |
| 956 purposes, such as implementing EOL types of CRLF and CR; generally, you do | |
| 957 not want to see these.) If it is t, only the internal coding systems are | |
| 958 included. If it is any other non-nil value both normal and internal are | |
| 959 included. | |
| 428 | 960 */ |
| 771 | 961 (internal)) |
| 428 | 962 { |
| 963 Lisp_Object coding_system_list = Qnil; | |
| 964 struct gcpro gcpro1; | |
| 965 struct coding_system_list_closure coding_system_list_closure; | |
| 966 | |
| 967 GCPRO1 (coding_system_list); | |
| 968 coding_system_list_closure.coding_system_list = &coding_system_list; | |
| 771 | 969 coding_system_list_closure.normal = !EQ (internal, Qt); |
| 970 coding_system_list_closure.internal = !NILP (internal); | |
| 428 | 971 elisp_maphash (add_coding_system_to_list_mapper, Vcoding_system_hash_table, |
| 972 &coding_system_list_closure); | |
| 973 UNGCPRO; | |
| 974 | |
| 975 return coding_system_list; | |
| 976 } | |
| 977 | |
| 978 DEFUN ("coding-system-name", Fcoding_system_name, 1, 1, 0, /* | |
| 979 Return the name of the given coding system. | |
| 980 */ | |
| 981 (coding_system)) | |
| 982 { | |
| 983 coding_system = Fget_coding_system (coding_system); | |
| 984 return XCODING_SYSTEM_NAME (coding_system); | |
| 985 } | |
| 986 | |
| 987 static Lisp_Coding_System * | |
| 771 | 988 allocate_coding_system (struct coding_system_methods *codesys_meths, |
| 989 Bytecount data_size, | |
| 990 Lisp_Object name) | |
| 428 | 991 { |
| 771 | 992 Bytecount total_size = offsetof (Lisp_Coding_System, data) + data_size; |
|
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993 Lisp_Object obj = ALLOC_SIZED_LISP_OBJECT (total_size, coding_system); |
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994 Lisp_Coding_System *codesys = XCODING_SYSTEM (obj); |
| 1204 | 995 |
| 771 | 996 codesys->methods = codesys_meths; |
| 1204 | 997 #define MARKED_SLOT(x) codesys->x = Qnil; |
| 998 #include "coding-system-slots.h" | |
| 999 | |
| 771 | 1000 CODING_SYSTEM_EOL_TYPE (codesys) = EOL_LF; |
| 1001 CODING_SYSTEM_NAME (codesys) = name; | |
| 1002 | |
| 1003 MAYBE_CODESYSMETH (codesys, init, (wrap_coding_system (codesys))); | |
| 428 | 1004 |
| 1005 return codesys; | |
| 1006 } | |
| 1007 | |
| 771 | 1008 static enum eol_type |
| 1009 symbol_to_eol_type (Lisp_Object symbol) | |
| 1010 { | |
| 1011 CHECK_SYMBOL (symbol); | |
| 1012 if (NILP (symbol)) return EOL_AUTODETECT; | |
| 1013 if (EQ (symbol, Qlf)) return EOL_LF; | |
| 1014 if (EQ (symbol, Qcrlf)) return EOL_CRLF; | |
| 1015 if (EQ (symbol, Qcr)) return EOL_CR; | |
| 1016 | |
| 1017 invalid_constant ("Unrecognized eol type", symbol); | |
| 1204 | 1018 RETURN_NOT_REACHED (EOL_AUTODETECT); |
| 771 | 1019 } |
| 1020 | |
| 1021 static Lisp_Object | |
| 1022 eol_type_to_symbol (enum eol_type type) | |
| 1023 { | |
| 1024 switch (type) | |
| 1025 { | |
| 2500 | 1026 default: ABORT (); |
| 771 | 1027 case EOL_LF: return Qlf; |
| 1028 case EOL_CRLF: return Qcrlf; | |
| 1029 case EOL_CR: return Qcr; | |
| 1030 case EOL_AUTODETECT: return Qnil; | |
| 1031 } | |
| 1032 } | |
| 1033 | |
| 1034 struct subsidiary_type | |
| 1035 { | |
|
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1036 const Ascbyte *extension; |
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1037 const Ascbyte *mnemonic_ext; |
| 771 | 1038 enum eol_type eol; |
| 1039 }; | |
| 1040 | |
| 1041 static struct subsidiary_type coding_subsidiary_list[] = | |
| 1042 { { "-unix", "", EOL_LF }, | |
| 1043 { "-dos", ":T", EOL_CRLF }, | |
| 1044 { "-mac", ":t", EOL_CR } }; | |
| 1045 | |
| 1046 /* kludge */ | |
| 428 | 1047 static void |
| 771 | 1048 setup_eol_coding_systems (Lisp_Object codesys) |
| 428 | 1049 { |
| 793 | 1050 int len = XSTRING_LENGTH (XSYMBOL (XCODING_SYSTEM_NAME (codesys))->name); |
| 2367 | 1051 Ibyte *codesys_name = alloca_ibytes (len + 7); |
| 771 | 1052 int mlen = -1; |
| 867 | 1053 Ibyte *codesys_mnemonic = 0; |
| 771 | 1054 Lisp_Object codesys_name_sym, sub_codesys; |
| 1055 int i; | |
| 1056 | |
| 1057 memcpy (codesys_name, | |
| 793 | 1058 XSTRING_DATA (XSYMBOL (XCODING_SYSTEM_NAME (codesys))->name), len); |
| 771 | 1059 |
| 1060 if (STRINGP (XCODING_SYSTEM_MNEMONIC (codesys))) | |
| 428 | 1061 { |
| 771 | 1062 mlen = XSTRING_LENGTH (XCODING_SYSTEM_MNEMONIC (codesys)); |
| 2367 | 1063 codesys_mnemonic = alloca_ibytes (mlen + 7); |
| 771 | 1064 memcpy (codesys_mnemonic, |
| 1065 XSTRING_DATA (XCODING_SYSTEM_MNEMONIC (codesys)), mlen); | |
| 1066 } | |
| 1067 | |
| 1068 /* Create three "subsidiary" coding systems, decoding data encoded using | |
| 1069 each of the three EOL types. We do this for each subsidiary by | |
| 1070 copying the original coding system, setting the EOL type | |
| 1071 appropriately, and setting the CANONICAL member of the new coding | |
| 1072 system to be a chain consisting of the original coding system followed | |
| 1073 by a convert-eol coding system to do the EOL decoding. For EOL type | |
| 1074 LF, however, we don't need any decoding, so we skip creating a | |
| 1075 CANONICAL. | |
| 1076 | |
| 1077 If the original coding system is not a text-type coding system | |
| 1078 (decodes byte->char), we need to coerce it to one by the appropriate | |
| 1079 wrapping in CANONICAL. */ | |
| 1080 | |
| 1081 for (i = 0; i < countof (coding_subsidiary_list); i++) | |
| 1082 { | |
|
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1083 const Ascbyte *extension = coding_subsidiary_list[i].extension; |
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1084 const Ascbyte *mnemonic_ext = coding_subsidiary_list[i].mnemonic_ext; |
| 771 | 1085 enum eol_type eol = coding_subsidiary_list[i].eol; |
| 1086 | |
| 2367 | 1087 qxestrcpy_ascii (codesys_name + len, extension); |
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1088 codesys_name_sym = intern_istring (codesys_name); |
| 771 | 1089 if (mlen != -1) |
| 2367 | 1090 qxestrcpy_ascii (codesys_mnemonic + mlen, mnemonic_ext); |
| 771 | 1091 |
| 1092 sub_codesys = Fcopy_coding_system (codesys, codesys_name_sym); | |
| 1093 if (mlen != -1) | |
| 1094 XCODING_SYSTEM_MNEMONIC (sub_codesys) = | |
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1095 build_istring (codesys_mnemonic); |
| 771 | 1096 |
| 1097 if (eol != EOL_LF) | |
| 1098 { | |
| 1099 Lisp_Object chain = list2 (get_coding_system_for_text_file | |
| 1100 (codesys, 0), | |
| 1101 eol == EOL_CR ? Qconvert_eol_cr : | |
| 1102 Qconvert_eol_crlf); | |
| 1103 Lisp_Object canon = | |
| 1104 make_internal_coding_system | |
| 1105 (sub_codesys, "internal-subsidiary-eol-wrapper", | |
| 1106 Qchain, Qunbound, | |
| 1107 mlen != -1 ? | |
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1108 list6 (Qmnemonic, build_istring (codesys_mnemonic), |
| 771 | 1109 Qchain, chain, |
| 1110 Qcanonicalize_after_coding, sub_codesys) : | |
| 1111 list4 (Qchain, chain, | |
| 1112 Qcanonicalize_after_coding, sub_codesys)); | |
| 1113 XCODING_SYSTEM_CANONICAL (sub_codesys) = canon; | |
| 1114 } | |
| 1115 XCODING_SYSTEM_EOL_TYPE (sub_codesys) = eol; | |
| 1116 XCODING_SYSTEM_SUBSIDIARY_PARENT (sub_codesys) = codesys; | |
| 1117 XCODING_SYSTEM (codesys)->eol[eol] = sub_codesys; | |
| 428 | 1118 } |
| 1119 } | |
| 1120 | |
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1121 DEFUN ("coding-system-canonical-name-p", Fcoding_system_canonical_name_p, |
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1122 1, 1, 0, /* |
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1123 Return t if OBJECT names a coding system, and is not a coding system alias. |
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1124 */ |
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1125 (object)) |
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1126 { |
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1127 return CODING_SYSTEMP (Fgethash (object, Vcoding_system_hash_table, Qnil)) |
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1128 ? Qt : Qnil; |
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1129 } |
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1130 |
| 771 | 1131 /* Basic function to create new coding systems. For `make-coding-system', |
| 1132 NAME-OR-EXISTING is the NAME argument, PREFIX is null, and TYPE, | |
| 1133 DESCRIPTION, and PROPS are the same. All created coding systems are put | |
| 1134 in a hash table indexed by NAME. | |
| 1135 | |
| 1136 If PREFIX is a string, NAME-OR-EXISTING should specify an existing | |
| 1137 coding system (or nil), and an internal coding system will be created. | |
| 1138 The name of the coding system will be constructed by combining PREFIX | |
| 1139 with the name of the existing coding system (if given), and a number | |
| 1140 will be appended to insure uniqueness. In such a case, if Qunbound is | |
| 1141 given for DESCRIPTION, the description gets created based on the | |
| 1142 generated name. Also, if no mnemonic is given in the properties list, a | |
| 1143 mnemonic is created based on the generated name. | |
| 1144 | |
| 1145 For internal coding systems, the coding system is marked as internal | |
| 1146 (see `coding-system-list'), and no subsidiaries will be created or | |
| 1147 eol-wrapping will happen. Otherwise: | |
| 1148 | |
| 1149 -- if the eol-type property is `lf' or t, the coding system is merely | |
| 1150 created and returned. (For t, the coding system will be wrapped with | |
| 1151 an EOL autodetector when it's used to read a file.) | |
| 1152 | |
| 1153 -- if eol-type is `crlf' or `cr', after the coding system object is | |
| 1154 created, it will be wrapped in a chain with the appropriate | |
| 1155 convert-eol coding system (either `convert-eol-crlf' or | |
| 1156 `convert-eol-cr'), so that CRLF->LF or CR->LF conversion is done at | |
| 1157 decoding time, and the opposite at encoding time. The resulting | |
| 1158 chain becomes the CANONICAL field of the coding system object. | |
| 1159 | |
| 1160 -- if eol-type is nil or omitted, "subsidiaries" are generated: Three | |
| 1161 coding systems where the original coding system (before wrapping with | |
| 1162 convert-eol-autodetect) is either unwrapped or wrapped with | |
| 1163 convert-eol-crlf or convert-eol-cr, respectively, so that coding systems | |
| 1164 to handle LF, CRLF, and CR end-of-line indicators are created. (This | |
| 1165 crazy crap is based on existing behavior in other Mule versions, | |
| 1166 including FSF Emacs.) | |
| 1167 */ | |
| 428 | 1168 |
| 1169 static Lisp_Object | |
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1170 make_coding_system_1 (Lisp_Object name_or_existing, const Ascbyte *prefix, |
| 771 | 1171 Lisp_Object type, Lisp_Object description, |
| 1172 Lisp_Object props) | |
| 428 | 1173 { |
| 771 | 1174 Lisp_Coding_System *cs; |
| 1175 int need_to_setup_eol_systems = 1; | |
| 1176 enum eol_type eol_wrapper = EOL_AUTODETECT; | |
| 1177 struct coding_system_methods *meths; | |
| 1178 Lisp_Object csobj; | |
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1179 Lisp_Object defmnem = Qnil, aliases = Qnil; |
| 771 | 1180 |
| 1181 if (NILP (type)) | |
| 1182 type = Qundecided; | |
| 1183 meths = decode_coding_system_type (type, ERROR_ME); | |
| 1184 | |
| 1185 if (prefix) | |
| 428 | 1186 { |
| 867 | 1187 Ibyte *newname = |
| 771 | 1188 emacs_sprintf_malloc (NULL, "%s-%s-%d", |
| 1189 prefix, | |
| 867 | 1190 NILP (name_or_existing) ? (Ibyte *) "nil" : |
| 771 | 1191 XSTRING_DATA (Fsymbol_name (XCODING_SYSTEM_NAME |
| 1192 (name_or_existing))), | |
| 1193 ++coding_system_tick); | |
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1194 name_or_existing = intern_istring (newname); |
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1195 xfree (newname); |
| 771 | 1196 |
| 1197 if (UNBOUNDP (description)) | |
| 1198 { | |
| 1199 newname = | |
| 1200 emacs_sprintf_malloc | |
| 1201 (NULL, "For Internal Use (%s)", | |
| 1202 XSTRING_DATA (Fsymbol_name (name_or_existing))); | |
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1203 description = build_istring (newname); |
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1204 xfree (newname); |
| 771 | 1205 } |
| 1206 | |
| 1207 newname = emacs_sprintf_malloc (NULL, "Int%d", coding_system_tick); | |
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1208 defmnem = build_istring (newname); |
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1209 xfree (newname); |
| 428 | 1210 } |
| 771 | 1211 else |
| 1212 CHECK_SYMBOL (name_or_existing); | |
| 1213 | |
| 4303 | 1214 /* See is there an entry for name_or_existing in the defined coding system |
| 1215 hash table. */ | |
| 1216 csobj = find_coding_system (name_or_existing, 0); | |
| 1217 /* Error if it's there and not an autoload form. */ | |
| 1218 if (!NILP (csobj) && !CONSP (csobj)) | |
| 771 | 1219 invalid_operation ("Cannot redefine existing coding system", |
| 4303 | 1220 name_or_existing); |
| 771 | 1221 |
| 1222 cs = allocate_coding_system (meths, meths->extra_data_size, | |
| 1223 name_or_existing); | |
| 793 | 1224 csobj = wrap_coding_system (cs); |
| 771 | 1225 |
| 1226 cs->internal_p = !!prefix; | |
| 1227 | |
| 1228 if (NILP (description)) | |
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1229 description = build_ascstring (""); |
| 771 | 1230 else |
| 1231 CHECK_STRING (description); | |
| 1232 CODING_SYSTEM_DESCRIPTION (cs) = description; | |
| 1233 | |
| 1234 if (!NILP (defmnem)) | |
| 1235 CODING_SYSTEM_MNEMONIC (cs) = defmnem; | |
| 1236 | |
| 1237 { | |
| 1238 EXTERNAL_PROPERTY_LIST_LOOP_3 (key, value, props) | |
| 1239 { | |
| 1240 int recognized = 1; | |
| 1241 | |
| 1242 if (EQ (key, Qmnemonic)) | |
| 1243 { | |
| 1244 if (!NILP (value)) | |
| 1245 CHECK_STRING (value); | |
| 1246 CODING_SYSTEM_MNEMONIC (cs) = value; | |
| 1247 } | |
| 1248 | |
| 1249 else if (EQ (key, Qdocumentation)) | |
| 1250 { | |
| 1251 if (!NILP (value)) | |
| 1252 CHECK_STRING (value); | |
| 1253 CODING_SYSTEM_DOCUMENTATION (cs) = value; | |
| 1254 } | |
| 1255 | |
| 1256 else if (EQ (key, Qeol_type)) | |
| 1257 { | |
| 1258 need_to_setup_eol_systems = NILP (value); | |
| 1259 if (EQ (value, Qt)) | |
| 1260 value = Qnil; | |
| 1261 eol_wrapper = symbol_to_eol_type (value); | |
| 1262 } | |
| 1263 | |
| 1264 else if (EQ (key, Qpost_read_conversion)) | |
| 1265 CODING_SYSTEM_POST_READ_CONVERSION (cs) = value; | |
| 1266 else if (EQ (key, Qpre_write_conversion)) | |
| 1267 CODING_SYSTEM_PRE_WRITE_CONVERSION (cs) = value; | |
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1268 else if (EQ (key, Qaliases)) |
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1269 { |
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1270 EXTERNAL_LIST_LOOP_2 (alias, value) |
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1271 { |
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1272 CHECK_SYMBOL (alias); |
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1273 |
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1274 if (!NILP (Fcoding_system_canonical_name_p (alias))) |
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1275 { |
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1276 invalid_change ("Symbol is the canonical name of a " |
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1277 "coding system and cannot be redefined", |
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1278 alias); |
|
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1279 } |
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1280 } |
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1281 aliases = value; |
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1282 } |
| 771 | 1283 /* FSF compatibility */ |
| 1284 else if (EQ (key, Qtranslation_table_for_decode)) | |
| 1285 ; | |
| 1286 else if (EQ (key, Qtranslation_table_for_encode)) | |
| 1287 ; | |
| 1288 else if (EQ (key, Qsafe_chars)) | |
|
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1289 { |
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1290 CHECK_CHAR_TABLE (value); |
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1291 CODING_SYSTEM_SAFE_CHARS (cs) = value; |
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1292 } |
| 771 | 1293 else if (EQ (key, Qsafe_charsets)) |
|
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1294 { |
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1295 if (!EQ (Qt, value) |
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1296 /* Would be nice to actually do this check, but there are |
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1297 some order conflicts with japanese.el and |
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1298 mule-coding.el */ |
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1299 && 0) |
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1300 { |
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1301 #ifdef MULE |
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1302 EXTERNAL_LIST_LOOP_2 (safe_charset, value) |
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1303 CHECK_CHARSET (Ffind_charset (safe_charset)); |
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1304 #endif |
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1305 } |
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1306 |
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1307 CODING_SYSTEM_SAFE_CHARSETS (cs) = value; |
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1308 } |
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1309 else if (EQ (key, Qcategory)) |
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1310 { |
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1311 Fput (name_or_existing, intern ("coding-system-property"), |
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1312 Fplist_put (Fget (name_or_existing, |
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1313 intern ("coding-system-property"), |
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1314 Qnil), |
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1315 Qcategory, value)); |
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1316 } |
| 771 | 1317 else if (EQ (key, Qmime_charset)) |
| 1318 ; | |
| 1319 else if (EQ (key, Qvalid_codes)) | |
| 1320 ; | |
| 1321 else | |
| 1322 recognized = CODESYSMETH_OR_GIVEN (cs, putprop, | |
| 1323 (csobj, key, value), 0); | |
| 1324 | |
| 1325 if (!recognized) | |
| 1326 invalid_constant ("Unrecognized property", key); | |
| 1327 } | |
| 1328 } | |
| 1329 | |
| 1330 { | |
| 1331 XCODING_SYSTEM_CANONICAL (csobj) = | |
| 1332 CODESYSMETH_OR_GIVEN (cs, canonicalize, (csobj), Qnil); | |
| 1333 XCODING_SYSTEM_EOL_TYPE (csobj) = EOL_AUTODETECT; /* for copy-coding-system | |
| 1334 below */ | |
| 1335 | |
| 4303 | 1336 Fputhash (name_or_existing, csobj, Vcoding_system_hash_table); |
| 1337 | |
| 771 | 1338 if (need_to_setup_eol_systems && !cs->internal_p) |
| 1339 setup_eol_coding_systems (csobj); | |
| 1340 else if (eol_wrapper == EOL_CR || eol_wrapper == EOL_CRLF) | |
| 1341 { | |
| 1342 /* If a specific eol-type (other than LF) was specified, we handle | |
| 1343 this by converting the coding system into a chain that wraps the | |
| 1344 coding system along with a convert-eol system after it, in | |
| 1345 exactly that same switcheroo fashion that the normal | |
| 1346 canonicalize method works -- BUT we will run into a problem if | |
| 1347 we do it the obvious way, because when `chain' creates its | |
| 1348 substreams, the substream containing the coding system we're | |
| 1349 creating will have canonicalization expansion done on it, | |
| 1350 leading to infinite recursion. So we have to generate a new, | |
| 1351 internal coding system with the previous value of CANONICAL. */ | |
| 867 | 1352 Ibyte *newname = |
| 771 | 1353 emacs_sprintf_malloc |
| 1354 (NULL, "internal-eol-copy-%s-%d", | |
| 1355 XSTRING_DATA (Fsymbol_name (name_or_existing)), | |
| 1356 ++coding_system_tick); | |
|
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1357 Lisp_Object newnamesym = intern_istring (newname); |
| 771 | 1358 Lisp_Object copied = Fcopy_coding_system (csobj, newnamesym); |
|
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1359 xfree (newname); |
| 771 | 1360 |
| 1361 XCODING_SYSTEM_CANONICAL (csobj) = | |
| 1362 make_internal_coding_system | |
| 1363 (csobj, | |
| 1364 "internal-eol-wrapper", | |
| 1365 Qchain, Qunbound, | |
| 1366 list4 (Qchain, | |
| 1367 list2 (copied, | |
| 1368 eol_wrapper == EOL_CR ? | |
| 1369 Qconvert_eol_cr : | |
| 1370 Qconvert_eol_crlf), | |
| 1371 Qcanonicalize_after_coding, | |
| 1372 csobj)); | |
| 1373 } | |
| 1374 XCODING_SYSTEM_EOL_TYPE (csobj) = eol_wrapper; | |
|
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1375 |
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1376 { |
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1377 EXTERNAL_LIST_LOOP_2 (alias, aliases) |
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1378 Fdefine_coding_system_alias (alias, csobj); |
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1379 } |
| 771 | 1380 } |
| 1381 | |
| 1382 return csobj; | |
| 428 | 1383 } |
| 1384 | |
| 771 | 1385 Lisp_Object |
|
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1386 make_internal_coding_system (Lisp_Object existing, const Ascbyte *prefix, |
| 771 | 1387 Lisp_Object type, Lisp_Object description, |
| 1388 Lisp_Object props) | |
| 1389 { | |
| 1390 return make_coding_system_1 (existing, prefix, type, description, props); | |
| 1391 } | |
| 428 | 1392 |
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1393 DEFUN ("make-coding-system-internal", Fmake_coding_system_internal, 2, 4, 0, /* |
|
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1394 Create a new coding system object, and register NAME as its name. |
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1395 |
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1396 With Mule support, this does much of the work of `make-coding-system'. |
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1397 Without Mule support, it does all the work of that function, and an alias |
|
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1398 exists, mapping `make-coding-system' to `make-coding-system-internal'. |
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1399 |
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1400 You'll need a Mule XEmacs to read the complete docstring. Or you can |
|
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1401 just read it in make-coding-system.el; something like the following |
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1402 should work: |
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1403 |
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1404 \\[find-function-other-window] find-file RET \\[find-file] mule/make-coding-system.el RET |
| 771 | 1405 |
| 428 | 1406 */ |
| 771 | 1407 (name, type, description, props)) |
| 428 | 1408 { |
| 771 | 1409 return make_coding_system_1 (name, 0, type, description, props); |
| 428 | 1410 } |
| 1411 | |
| 1412 DEFUN ("copy-coding-system", Fcopy_coding_system, 2, 2, 0, /* | |
| 1413 Copy OLD-CODING-SYSTEM to NEW-NAME. | |
| 1414 If NEW-NAME does not name an existing coding system, a new one will | |
| 1415 be created. | |
| 771 | 1416 If you are using this function to create an alias, think again: |
| 1417 Use `define-coding-system-alias' instead. | |
| 428 | 1418 */ |
| 1419 (old_coding_system, new_name)) | |
| 1420 { | |
| 1421 Lisp_Object new_coding_system; | |
| 1422 old_coding_system = Fget_coding_system (old_coding_system); | |
| 771 | 1423 new_coding_system = |
| 4303 | 1424 UNBOUNDP (new_name) ? Qnil : find_coding_system (new_name, 0); |
| 428 | 1425 if (NILP (new_coding_system)) |
| 1426 { | |
| 793 | 1427 new_coding_system = |
| 1428 wrap_coding_system | |
| 1429 (allocate_coding_system | |
| 1430 (XCODING_SYSTEM (old_coding_system)->methods, | |
| 1431 XCODING_SYSTEM (old_coding_system)->methods->extra_data_size, | |
| 1432 new_name)); | |
| 771 | 1433 if (!UNBOUNDP (new_name)) |
| 1434 Fputhash (new_name, new_coding_system, Vcoding_system_hash_table); | |
| 428 | 1435 } |
| 771 | 1436 else if (XCODING_SYSTEM (old_coding_system)->methods != |
| 1437 XCODING_SYSTEM (new_coding_system)->methods) | |
| 1438 invalid_operation_2 ("Coding systems not same type", | |
| 1439 old_coding_system, new_coding_system); | |
| 428 | 1440 |
|
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1441 copy_lisp_object (new_coding_system, old_coding_system); |
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1442 XCODING_SYSTEM (new_coding_system)->name = new_name; |
| 428 | 1443 return new_coding_system; |
| 1444 } | |
| 1445 | |
| 2297 | 1446 /* #### Shouldn't this really be a find/get pair? */ |
| 1447 | |
| 440 | 1448 DEFUN ("coding-system-alias-p", Fcoding_system_alias_p, 1, 1, 0, /* |
| 1449 Return t if OBJECT is a coding system alias. | |
| 1450 All coding system aliases are created by `define-coding-system-alias'. | |
| 1451 */ | |
| 1452 (object)) | |
| 428 | 1453 { |
| 440 | 1454 return SYMBOLP (Fgethash (object, Vcoding_system_hash_table, Qzero)) |
| 1455 ? Qt : Qnil; | |
| 1456 } | |
| 1457 | |
| 1458 DEFUN ("coding-system-aliasee", Fcoding_system_aliasee, 1, 1, 0, /* | |
| 1459 Return the coding-system symbol for which symbol ALIAS is an alias. | |
| 1460 */ | |
| 1461 (alias)) | |
| 1462 { | |
| 1463 Lisp_Object aliasee = Fgethash (alias, Vcoding_system_hash_table, Qnil); | |
| 1464 if (SYMBOLP (aliasee)) | |
| 1465 return aliasee; | |
| 1466 else | |
| 563 | 1467 invalid_argument ("Symbol is not a coding system alias", alias); |
| 1204 | 1468 RETURN_NOT_REACHED (Qnil); |
| 440 | 1469 } |
| 1470 | |
| 1471 /* A maphash function, for removing dangling coding system aliases. */ | |
| 1472 static int | |
| 2286 | 1473 dangling_coding_system_alias_p (Lisp_Object UNUSED (alias), |
| 440 | 1474 Lisp_Object aliasee, |
| 1475 void *dangling_aliases) | |
| 1476 { | |
| 1477 if (SYMBOLP (aliasee) | |
| 1478 && NILP (Fgethash (aliasee, Vcoding_system_hash_table, Qnil))) | |
| 428 | 1479 { |
| 440 | 1480 (*(int *) dangling_aliases)++; |
| 1481 return 1; | |
| 428 | 1482 } |
| 440 | 1483 else |
| 1484 return 0; | |
| 1485 } | |
| 1486 | |
| 1487 DEFUN ("define-coding-system-alias", Fdefine_coding_system_alias, 2, 2, 0, /* | |
| 1488 Define symbol ALIAS as an alias for coding system ALIASEE. | |
| 1489 | |
| 1490 You can use this function to redefine an alias that has already been defined, | |
| 1491 but you cannot redefine a name which is the canonical name for a coding system. | |
| 1492 \(a canonical name of a coding system is what is returned when you call | |
| 1493 `coding-system-name' on a coding system). | |
| 1494 | |
| 1495 ALIASEE itself can be an alias, which allows you to define nested aliases. | |
| 1496 | |
| 1497 You are forbidden, however, from creating alias loops or `dangling' aliases. | |
| 1498 These will be detected, and an error will be signaled if you attempt to do so. | |
| 1499 | |
| 1500 If ALIASEE is nil, then ALIAS will simply be undefined. | |
| 1501 | |
| 1502 See also `coding-system-alias-p', `coding-system-aliasee', | |
| 1503 and `coding-system-canonical-name-p'. | |
| 1504 */ | |
| 1505 (alias, aliasee)) | |
| 1506 { | |
| 2286 | 1507 Lisp_Object probe; |
| 440 | 1508 |
| 1509 CHECK_SYMBOL (alias); | |
| 1510 | |
| 1511 if (!NILP (Fcoding_system_canonical_name_p (alias))) | |
| 563 | 1512 invalid_change |
| 440 | 1513 ("Symbol is the canonical name of a coding system and cannot be redefined", |
| 1514 alias); | |
| 1515 | |
| 1516 if (NILP (aliasee)) | |
| 1517 { | |
| 771 | 1518 Lisp_Object subsidiary_unix = add_suffix_to_symbol (alias, "-unix"); |
| 1519 Lisp_Object subsidiary_dos = add_suffix_to_symbol (alias, "-dos"); | |
| 1520 Lisp_Object subsidiary_mac = add_suffix_to_symbol (alias, "-mac"); | |
| 440 | 1521 |
| 1522 Fremhash (alias, Vcoding_system_hash_table); | |
| 1523 | |
| 1524 /* Undefine subsidiary aliases, | |
| 1525 presumably created by a previous call to this function */ | |
| 1526 if (! NILP (Fcoding_system_alias_p (subsidiary_unix)) && | |
| 1527 ! NILP (Fcoding_system_alias_p (subsidiary_dos)) && | |
| 1528 ! NILP (Fcoding_system_alias_p (subsidiary_mac))) | |
| 1529 { | |
| 1530 Fdefine_coding_system_alias (subsidiary_unix, Qnil); | |
| 1531 Fdefine_coding_system_alias (subsidiary_dos, Qnil); | |
| 1532 Fdefine_coding_system_alias (subsidiary_mac, Qnil); | |
| 1533 } | |
| 1534 | |
| 1535 /* Undefine dangling coding system aliases. */ | |
| 1536 { | |
| 1537 int dangling_aliases; | |
| 1538 | |
| 1539 do { | |
| 1540 dangling_aliases = 0; | |
| 1541 elisp_map_remhash (dangling_coding_system_alias_p, | |
| 1542 Vcoding_system_hash_table, | |
| 1543 &dangling_aliases); | |
| 1544 } while (dangling_aliases > 0); | |
| 1545 } | |
| 1546 | |
| 1547 return Qnil; | |
| 1548 } | |
| 1549 | |
| 1550 if (CODING_SYSTEMP (aliasee)) | |
| 1551 aliasee = XCODING_SYSTEM_NAME (aliasee); | |
| 1552 | |
| 1553 /* Checks that aliasee names a coding-system */ | |
| 2286 | 1554 (void) Fget_coding_system (aliasee); |
| 440 | 1555 |
| 1556 /* Check for coding system alias loops */ | |
| 1557 if (EQ (alias, aliasee)) | |
| 563 | 1558 alias_loop: invalid_operation_2 |
| 440 | 1559 ("Attempt to create a coding system alias loop", alias, aliasee); |
| 1560 | |
| 1561 for (probe = aliasee; | |
| 1562 SYMBOLP (probe); | |
| 1563 probe = Fgethash (probe, Vcoding_system_hash_table, Qzero)) | |
| 1564 { | |
| 1565 if (EQ (probe, alias)) | |
| 1566 goto alias_loop; | |
| 1567 } | |
| 1568 | |
| 1569 Fputhash (alias, aliasee, Vcoding_system_hash_table); | |
| 1570 | |
| 1571 /* Set up aliases for subsidiaries. | |
| 2297 | 1572 #### There must be a better way to handle subsidiary coding systems. |
| 1573 Inquiring Minds Want To Know: shouldn't they always be chains? */ | |
| 440 | 1574 { |
| 1575 static const char *suffixes[] = { "-unix", "-dos", "-mac" }; | |
| 1576 int i; | |
| 1577 for (i = 0; i < countof (suffixes); i++) | |
| 1578 { | |
| 1579 Lisp_Object alias_subsidiary = | |
| 771 | 1580 add_suffix_to_symbol (alias, suffixes[i]); |
| 440 | 1581 Lisp_Object aliasee_subsidiary = |
| 771 | 1582 add_suffix_to_symbol (aliasee, suffixes[i]); |
| 440 | 1583 |
| 1584 if (! NILP (Ffind_coding_system (aliasee_subsidiary))) | |
| 1585 Fdefine_coding_system_alias (alias_subsidiary, aliasee_subsidiary); | |
| 1586 } | |
| 1587 } | |
| 428 | 1588 /* FSF return value is a vector of [ALIAS-unix ALIAS-dos ALIAS-mac], |
| 1589 but it doesn't look intentional, so I'd rather return something | |
| 1590 meaningful or nothing at all. */ | |
| 1591 return Qnil; | |
| 1592 } | |
| 1593 | |
| 1594 static Lisp_Object | |
| 771 | 1595 subsidiary_coding_system (Lisp_Object coding_system, enum eol_type type) |
| 428 | 1596 { |
| 1597 Lisp_Coding_System *cs = XCODING_SYSTEM (coding_system); | |
| 1598 Lisp_Object new_coding_system; | |
| 1599 | |
| 1600 switch (type) | |
| 1601 { | |
| 1602 case EOL_AUTODETECT: return coding_system; | |
| 1603 case EOL_LF: new_coding_system = CODING_SYSTEM_EOL_LF (cs); break; | |
| 1604 case EOL_CR: new_coding_system = CODING_SYSTEM_EOL_CR (cs); break; | |
| 1605 case EOL_CRLF: new_coding_system = CODING_SYSTEM_EOL_CRLF (cs); break; | |
| 2500 | 1606 default: ABORT (); return Qnil; |
| 428 | 1607 } |
| 1608 | |
| 1609 return NILP (new_coding_system) ? coding_system : new_coding_system; | |
| 1610 } | |
| 1611 | |
| 1612 DEFUN ("subsidiary-coding-system", Fsubsidiary_coding_system, 2, 2, 0, /* | |
| 1613 Return the subsidiary coding system of CODING-SYSTEM with eol type EOL-TYPE. | |
| 771 | 1614 The logically opposite operation is `coding-system-base'. |
| 428 | 1615 */ |
| 1616 (coding_system, eol_type)) | |
| 1617 { | |
| 771 | 1618 coding_system = get_coding_system_for_text_file (coding_system, 0); |
| 428 | 1619 |
| 1620 return subsidiary_coding_system (coding_system, | |
| 1621 symbol_to_eol_type (eol_type)); | |
| 1622 } | |
| 1623 | |
| 771 | 1624 DEFUN ("coding-system-base", Fcoding_system_base, |
| 1625 1, 1, 0, /* | |
| 1626 Return the base coding system of CODING-SYSTEM. | |
| 1627 If CODING-SYSTEM is a subsidiary, this returns its parent; otherwise, it | |
| 1628 returns CODING-SYSTEM. | |
| 1629 The logically opposite operation is `subsidiary-coding-system'. | |
| 1630 */ | |
| 1631 (coding_system)) | |
| 1632 { | |
| 1633 Lisp_Object base; | |
| 1634 | |
| 1635 coding_system = Fget_coding_system (coding_system); | |
| 1636 if (EQ (XCODING_SYSTEM_NAME (coding_system), Qbinary)) | |
| 1637 return Fget_coding_system (Qraw_text); /* hack! */ | |
| 1638 base = XCODING_SYSTEM_SUBSIDIARY_PARENT (coding_system); | |
| 1639 if (!NILP (base)) | |
| 1640 return base; | |
| 1641 return coding_system; | |
| 1642 } | |
| 1643 | |
| 1644 DEFUN ("coding-system-used-for-io", Fcoding_system_used_for_io, | |
| 1645 1, 1, 0, /* | |
| 1646 Return the coding system actually used for I/O. | |
| 1647 In some cases (e.g. when a particular EOL type is specified) this won't be | |
| 2297 | 1648 the coding system itself. This can be useful when trying to determine |
| 1649 precisely how data was decoded. | |
| 771 | 1650 */ |
| 1651 (coding_system)) | |
| 1652 { | |
| 1653 Lisp_Object canon; | |
| 1654 | |
| 1655 coding_system = Fget_coding_system (coding_system); | |
| 1656 canon = XCODING_SYSTEM_CANONICAL (coding_system); | |
| 1657 if (!NILP (canon)) | |
| 1658 return canon; | |
| 1659 return coding_system; | |
| 1660 } | |
| 1661 | |
| 428 | 1662 |
| 1663 /************************************************************************/ | |
| 1664 /* Coding system accessors */ | |
| 1665 /************************************************************************/ | |
| 1666 | |
| 771 | 1667 DEFUN ("coding-system-description", Fcoding_system_description, 1, 1, 0, /* |
| 1668 Return the description for CODING-SYSTEM. | |
| 1669 The `description' of a coding system is a short English phrase giving the | |
| 1670 name rendered according to English punctuation rules, plus possibly some | |
| 1671 explanatory text (typically in the form of a parenthetical phrase). The | |
| 1672 description is intended to be short enough that it can appear as a menu item, | |
| 1673 and clear enough to be recognizable even to someone who is assumed to have | |
| 1674 some basic familiarity with different encodings but may not know all the | |
| 1675 technical names; thus, for `cn-gb-2312' is described as "Chinese EUC" and | |
| 1676 `hz-gb-2312' is described as "Hz/ZW (Chinese)", where the actual name of | |
| 1677 the encoding is given, followed by a note that this is a Chinese encoding, | |
| 1678 because the great majority of people encountering this would have no idea | |
| 1679 what it is, and giving the language indicates whether the encoding should | |
| 1680 just be ignored or (conceivably) investigated more thoroughly. | |
| 428 | 1681 */ |
| 1682 (coding_system)) | |
| 1683 { | |
| 1684 coding_system = Fget_coding_system (coding_system); | |
| 771 | 1685 return XCODING_SYSTEM_DESCRIPTION (coding_system); |
| 428 | 1686 } |
| 1687 | |
| 1688 DEFUN ("coding-system-type", Fcoding_system_type, 1, 1, 0, /* | |
| 1689 Return the type of CODING-SYSTEM. | |
| 1690 */ | |
| 1691 (coding_system)) | |
| 1692 { | |
| 771 | 1693 coding_system = Fget_coding_system (coding_system); |
| 1694 return XCODING_SYSTEM_TYPE (coding_system); | |
| 428 | 1695 } |
| 1696 | |
| 1697 DEFUN ("coding-system-property", Fcoding_system_property, 2, 2, 0, /* | |
| 1698 Return the PROP property of CODING-SYSTEM. | |
| 1699 */ | |
| 1700 (coding_system, prop)) | |
| 1701 { | |
| 1702 coding_system = Fget_coding_system (coding_system); | |
| 1703 CHECK_SYMBOL (prop); | |
| 1704 | |
| 1705 if (EQ (prop, Qname)) | |
| 1706 return XCODING_SYSTEM_NAME (coding_system); | |
| 1707 else if (EQ (prop, Qtype)) | |
| 1708 return Fcoding_system_type (coding_system); | |
| 771 | 1709 else if (EQ (prop, Qdescription)) |
| 1710 return XCODING_SYSTEM_DESCRIPTION (coding_system); | |
| 428 | 1711 else if (EQ (prop, Qmnemonic)) |
| 1712 return XCODING_SYSTEM_MNEMONIC (coding_system); | |
| 771 | 1713 else if (EQ (prop, Qdocumentation)) |
| 1714 return XCODING_SYSTEM_DOCUMENTATION (coding_system); | |
| 428 | 1715 else if (EQ (prop, Qeol_type)) |
| 771 | 1716 return eol_type_to_symbol (XCODING_SYSTEM_EOL_TYPE |
| 1717 (coding_system)); | |
| 428 | 1718 else if (EQ (prop, Qeol_lf)) |
| 1719 return XCODING_SYSTEM_EOL_LF (coding_system); | |
| 1720 else if (EQ (prop, Qeol_crlf)) | |
| 1721 return XCODING_SYSTEM_EOL_CRLF (coding_system); | |
| 1722 else if (EQ (prop, Qeol_cr)) | |
| 1723 return XCODING_SYSTEM_EOL_CR (coding_system); | |
| 1724 else if (EQ (prop, Qpost_read_conversion)) | |
| 1725 return XCODING_SYSTEM_POST_READ_CONVERSION (coding_system); | |
| 1726 else if (EQ (prop, Qpre_write_conversion)) | |
| 1727 return XCODING_SYSTEM_PRE_WRITE_CONVERSION (coding_system); | |
|
4568
1d74a1d115ee
Add #'query-coding-region tests; do the work necessary to get them running.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4303
diff
changeset
|
1728 else if (EQ (prop, Qsafe_charsets)) |
|
1d74a1d115ee
Add #'query-coding-region tests; do the work necessary to get them running.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4303
diff
changeset
|
1729 return XCODING_SYSTEM_SAFE_CHARSETS (coding_system); |
|
1d74a1d115ee
Add #'query-coding-region tests; do the work necessary to get them running.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4303
diff
changeset
|
1730 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>
parents:
4303
diff
changeset
|
1731 return XCODING_SYSTEM_SAFE_CHARS (coding_system); |
| 771 | 1732 else |
| 1733 { | |
| 1734 Lisp_Object value = CODESYSMETH_OR_GIVEN (XCODING_SYSTEM (coding_system), | |
| 1735 getprop, | |
| 1736 (coding_system, prop), | |
| 1737 Qunbound); | |
| 1738 if (UNBOUNDP (value)) | |
| 1739 invalid_constant ("Unrecognized property", prop); | |
| 1740 return value; | |
| 1741 } | |
| 1742 } | |
| 1743 | |
| 1744 | |
| 1745 /************************************************************************/ | |
| 1746 /* Coding stream functions */ | |
| 1747 /************************************************************************/ | |
| 1748 | |
| 1749 /* A coding stream is a stream used for encoding or decoding text. The | |
| 1750 coding-stream object keeps track of the actual coding system, the stream | |
| 1751 that is at the other end, and data that needs to be persistent across | |
| 1752 the lifetime of the stream. */ | |
| 1753 | |
| 1204 | 1754 extern const struct sized_memory_description chain_coding_stream_description; |
| 1755 extern const struct sized_memory_description undecided_coding_stream_description; | |
| 1756 | |
| 1757 static const struct memory_description coding_stream_data_description_1 []= { | |
| 2551 | 1758 { XD_BLOCK_PTR, chain_coding_system, 1, |
| 1759 { &chain_coding_stream_description } }, | |
| 1760 { XD_BLOCK_PTR, undecided_coding_system, 1, | |
| 1761 { &undecided_coding_stream_description } }, | |
| 1204 | 1762 { XD_END } |
| 1763 }; | |
| 1764 | |
| 1765 static const struct sized_memory_description coding_stream_data_description = { | |
| 1766 sizeof (void *), coding_stream_data_description_1 | |
| 1767 }; | |
| 1768 | |
| 1769 static const struct memory_description coding_lstream_description[] = { | |
| 1770 { XD_INT, offsetof (struct coding_stream, type) }, | |
| 1771 { XD_LISP_OBJECT, offsetof (struct coding_stream, orig_codesys) }, | |
| 1772 { XD_LISP_OBJECT, offsetof (struct coding_stream, codesys) }, | |
| 1773 { XD_LISP_OBJECT, offsetof (struct coding_stream, other_end) }, | |
| 1774 { XD_UNION, offsetof (struct coding_stream, data), | |
| 2551 | 1775 XD_INDIRECT (0, 0), { &coding_stream_data_description } }, |
| 1204 | 1776 { XD_END } |
| 1777 }; | |
| 1778 | |
| 1779 DEFINE_LSTREAM_IMPLEMENTATION_WITH_DATA ("coding", coding); | |
| 771 | 1780 |
| 1781 /* Encoding and decoding are parallel operations, so we create just one | |
| 1782 stream for both. "Decoding" may involve the extra step of autodetection | |
| 1783 of the data format, but that's only because of the conventional | |
| 1784 definition of decoding as converting from external- to | |
| 1785 internal-formatted data. | |
| 1786 | |
| 2297 | 1787 [[ REWRITE ME! ]] |
| 1788 | |
| 771 | 1789 #### We really need to abstract out the concept of "data formats" and |
| 1790 define "converters" that convert from and to specified formats, | |
| 1791 eliminating the idea of decoding and encoding. When specifying a | |
| 1792 conversion process, we need to give the data formats themselves, not the | |
| 1793 conversion processes -- e.g. a coding system called "Unicode->multibyte" | |
| 1794 converts in both directions, and we could auto-detect the format of data | |
| 1795 at either end. */ | |
| 1796 | |
| 1797 static Bytecount | |
| 1798 coding_reader (Lstream *stream, unsigned char *data, Bytecount size) | |
| 1799 { | |
| 1800 unsigned char *orig_data = data; | |
| 1801 Bytecount read_size; | |
| 1802 int error_occurred = 0; | |
| 1803 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 1804 | |
| 1805 /* We need to interface to coding_{de,en}code_1(), which expects to take | |
| 1806 some amount of data and store the result into a Dynarr. We have | |
| 1807 coding_{de,en}code_1() store into c->runoff, and take data from there | |
| 1808 as necessary. */ | |
| 1809 | |
| 1810 /* We loop until we have enough data, reading chunks from the other | |
| 1811 end and converting it. */ | |
| 1812 while (1) | |
| 1813 { | |
| 1814 /* Take data from convert_to if we can. Make sure to take at | |
| 1815 most SIZE bytes, and delete the data from convert_to. */ | |
| 1816 if (Dynarr_length (str->convert_to) > 0) | |
| 1817 { | |
| 1818 Bytecount chunk = | |
| 1819 min (size, (Bytecount) Dynarr_length (str->convert_to)); | |
| 4967 | 1820 memcpy (data, Dynarr_begin (str->convert_to), chunk); |
| 771 | 1821 Dynarr_delete_many (str->convert_to, 0, chunk); |
| 1822 data += chunk; | |
| 1823 size -= chunk; | |
| 1824 } | |
| 1825 | |
| 1826 if (size == 0) | |
| 1827 break; /* No more room for data */ | |
| 1828 | |
| 1829 if (str->eof) | |
| 1830 break; | |
| 1831 | |
| 1832 { | |
| 1833 /* Exhausted convert_to, so get some more. Read into convert_from, | |
| 1834 after existing "rejected" data from the last conversion. */ | |
| 1835 Bytecount rejected = Dynarr_length (str->convert_from); | |
| 1836 /* #### 1024 is arbitrary; we really need to separate 0 from EOF, | |
| 1837 and when we get 0, keep taking more data until we don't get 0 -- | |
| 1838 we don't know how much data the conversion routine might need | |
| 2297 | 1839 before it can generate any data of its own (eg, bzip2). */ |
| 814 | 1840 Bytecount readmore = |
| 1841 str->one_byte_at_a_time ? (Bytecount) 1 : | |
| 1842 max (size, (Bytecount) 1024); | |
| 771 | 1843 |
| 1844 Dynarr_add_many (str->convert_from, 0, readmore); | |
| 1845 read_size = Lstream_read (str->other_end, | |
| 1846 Dynarr_atp (str->convert_from, rejected), | |
| 1847 readmore); | |
| 1848 /* Trim size down to how much we actually got */ | |
| 5038 | 1849 Dynarr_set_lengthr (str->convert_from, rejected + max (0, read_size)); |
| 771 | 1850 } |
| 1851 | |
| 1852 if (read_size < 0) /* LSTREAM_ERROR */ | |
| 1853 { | |
| 1854 error_occurred = 1; | |
| 1855 break; | |
| 1856 } | |
| 1857 if (read_size == 0) /* LSTREAM_EOF */ | |
| 1858 /* There might be some more end data produced in the translation, | |
| 1859 so we set a flag and call the conversion method once more to | |
| 1860 output any final stuff it may be holding, any "go back to a sane | |
| 1861 state" escape sequences, etc. The conversion method is free to | |
| 1862 look at this flag, and we use it above to stop looping. */ | |
| 1863 str->eof = 1; | |
| 1864 { | |
| 1865 Bytecount processed; | |
| 1866 Bytecount to_process = Dynarr_length (str->convert_from); | |
| 1867 | |
| 1868 /* Convert the data, and save any rejected data in convert_from */ | |
| 1869 processed = | |
| 1870 XCODESYSMETH (str->codesys, convert, | |
| 4967 | 1871 (str, Dynarr_begin (str->convert_from), |
| 771 | 1872 str->convert_to, to_process)); |
| 1873 if (processed < 0) | |
| 1874 { | |
| 1875 error_occurred = 1; | |
| 1876 break; | |
| 1877 } | |
| 1878 assert (processed <= to_process); | |
| 1879 if (processed < to_process) | |
| 4967 | 1880 memmove (Dynarr_begin (str->convert_from), |
| 771 | 1881 Dynarr_atp (str->convert_from, processed), |
| 1882 to_process - processed); | |
| 5038 | 1883 Dynarr_set_lengthr (str->convert_from, to_process - processed); |
| 771 | 1884 } |
| 1885 } | |
| 1886 | |
| 1887 if (data - orig_data == 0) | |
| 1888 return error_occurred ? -1 : 0; | |
| 1889 else | |
| 1890 return data - orig_data; | |
| 1891 } | |
| 1892 | |
| 1893 static Bytecount | |
| 1894 coding_writer (Lstream *stream, const unsigned char *data, Bytecount size) | |
| 1895 { | |
| 1896 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 1897 | |
| 1898 /* Convert all our data into convert_to, and then attempt to write | |
| 1899 it all out to the other end. */ | |
| 1900 Dynarr_reset (str->convert_to); | |
| 1901 size = XCODESYSMETH (str->codesys, convert, | |
| 1902 (str, data, str->convert_to, size)); | |
| 4967 | 1903 if (Lstream_write (str->other_end, Dynarr_begin (str->convert_to), |
| 771 | 1904 Dynarr_length (str->convert_to)) < 0) |
| 1905 return -1; | |
| 1906 else | |
| 1907 /* The return value indicates how much of the incoming data was | |
| 1908 processed, not how many bytes were written. */ | |
| 1909 return size; | |
| 1910 } | |
| 1911 | |
| 1912 static int | |
| 1913 encode_decode_source_sink_type_is_char (Lisp_Object cs, | |
| 1914 enum source_or_sink sex, | |
| 1915 enum encode_decode direction) | |
| 1916 { | |
| 1917 return (direction == CODING_DECODE ? | |
| 1918 decoding_source_sink_type_is_char (cs, sex) : | |
| 1919 encoding_source_sink_type_is_char (cs, sex)); | |
| 1920 } | |
| 1921 | |
| 1922 /* Ensure that the convert methods only get full characters sent to them to | |
| 1923 convert if the source of that conversion is characters; and that no such | |
| 1924 full-character checking happens when the source is bytes. Keep in mind | |
| 1925 that (1) the conversion_end_type return values take the perspective of | |
| 1926 encoding; (2) the source for decoding is the same as the sink for | |
| 1927 encoding; (3) when writing, the data is given to us, and we set our own | |
| 1928 stream to be character mode or not; (4) when reading, the data comes | |
| 1929 from the other_end stream, and we set that one to be character mode or | |
| 1930 not. This is consistent with the comment above the prototype for | |
| 1931 Lstream_set_character_mode(), which lays out rules for who is allowed to | |
| 1932 modify the character type mode on a stream. | |
| 1933 | |
| 814 | 1934 If we're a read stream, we're always setting character mode on the |
| 1935 source, but we also set it on ourselves consistent with the flag that | |
| 1936 can disable this (see again the comment above | |
| 1937 Lstream_set_character_mode()). | |
| 1938 */ | |
| 771 | 1939 |
| 1940 static void | |
| 1941 set_coding_character_mode (Lstream *stream) | |
| 1942 { | |
| 1943 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 1944 Lstream *stream_to_set = | |
| 1945 stream->flags & LSTREAM_FL_WRITE ? stream : str->other_end; | |
| 1946 if (encode_decode_source_sink_type_is_char | |
| 1947 (str->codesys, CODING_SOURCE, str->direction)) | |
| 1948 Lstream_set_character_mode (stream_to_set); | |
| 1949 else | |
| 1950 Lstream_unset_character_mode (stream_to_set); | |
| 814 | 1951 if (str->set_char_mode_on_us_when_reading && |
| 1952 (stream->flags & LSTREAM_FL_READ)) | |
| 1953 { | |
| 1954 if (encode_decode_source_sink_type_is_char | |
| 1955 (str->codesys, CODING_SINK, str->direction)) | |
| 1956 Lstream_set_character_mode (stream); | |
| 1957 else | |
| 1958 Lstream_unset_character_mode (stream); | |
| 1959 } | |
| 771 | 1960 } |
| 1961 | |
| 1962 static Lisp_Object | |
| 1963 coding_marker (Lisp_Object stream) | |
| 1964 { | |
| 1965 struct coding_stream *str = CODING_STREAM_DATA (XLSTREAM (stream)); | |
| 1966 | |
| 1967 mark_object (str->orig_codesys); | |
| 1968 mark_object (str->codesys); | |
| 1969 MAYBE_XCODESYSMETH (str->codesys, mark_coding_stream, (str)); | |
| 1970 return wrap_lstream (str->other_end); | |
| 1971 } | |
| 1972 | |
| 1973 static int | |
| 1974 coding_rewinder (Lstream *stream) | |
| 1975 { | |
| 1976 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 1977 MAYBE_XCODESYSMETH (str->codesys, rewind_coding_stream, (str)); | |
| 1978 | |
| 1979 str->ch = 0; | |
| 1980 Dynarr_reset (str->convert_to); | |
| 1981 Dynarr_reset (str->convert_from); | |
| 1982 return Lstream_rewind (str->other_end); | |
| 1983 } | |
| 1984 | |
| 1985 static int | |
| 1986 coding_seekable_p (Lstream *stream) | |
| 1987 { | |
| 1988 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 1989 return Lstream_seekable_p (str->other_end); | |
| 1990 } | |
| 1991 | |
| 1992 static int | |
| 1993 coding_flusher (Lstream *stream) | |
| 1994 { | |
| 1995 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 1996 return Lstream_flush (str->other_end); | |
| 1997 } | |
| 1998 | |
| 1999 static int | |
| 2000 coding_closer (Lstream *stream) | |
| 2001 { | |
| 2002 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 2003 if (stream->flags & LSTREAM_FL_WRITE) | |
| 2004 { | |
| 2005 str->eof = 1; | |
| 2006 coding_writer (stream, 0, 0); | |
| 2007 str->eof = 0; | |
| 2008 } | |
| 2009 /* It's safe to free the runoff dynarrs now because they are used only | |
| 2010 during conversion. We need to keep the type-specific data around, | |
| 2011 though, because of canonicalize_after_coding. */ | |
| 2012 if (str->convert_to) | |
| 2013 { | |
| 2014 Dynarr_free (str->convert_to); | |
| 2015 str->convert_to = 0; | |
| 2016 } | |
| 2017 if (str->convert_from) | |
| 428 | 2018 { |
| 771 | 2019 Dynarr_free (str->convert_from); |
| 2020 str->convert_from = 0; | |
| 2021 } | |
| 2022 | |
| 800 | 2023 if (str->no_close_other) |
| 2024 return Lstream_flush (str->other_end); | |
| 2025 else | |
| 2026 return Lstream_close (str->other_end); | |
| 771 | 2027 } |
| 2028 | |
| 2029 static void | |
| 2030 coding_finalizer (Lstream *stream) | |
| 2031 { | |
| 2032 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 2033 | |
| 2034 assert (!str->finalized); | |
| 2035 MAYBE_XCODESYSMETH (str->codesys, finalize_coding_stream, (str)); | |
| 2036 if (str->data) | |
| 2037 { | |
|
4976
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Ben Wing <ben@xemacs.org>
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4967
diff
changeset
|
2038 xfree (str->data); |
| 771 | 2039 str->data = 0; |
| 2040 } | |
| 2041 str->finalized = 1; | |
| 2042 } | |
| 2043 | |
| 2044 static Lisp_Object | |
| 2045 coding_stream_canonicalize_after_coding (Lstream *stream) | |
| 2046 { | |
| 2047 struct coding_stream *str = CODING_STREAM_DATA (stream); | |
| 2048 | |
| 2049 return XCODESYSMETH_OR_GIVEN (str->codesys, canonicalize_after_coding, | |
| 2050 (str), str->codesys); | |
| 2051 } | |
| 2052 | |
| 2053 Lisp_Object | |
| 2054 coding_stream_detected_coding_system (Lstream *stream) | |
| 2055 { | |
| 2056 Lisp_Object codesys = | |
| 2057 coding_stream_canonicalize_after_coding (stream); | |
| 2058 if (NILP (codesys)) | |
| 2059 return Fget_coding_system (Qidentity); | |
| 2060 return codesys; | |
| 2061 } | |
| 2062 | |
| 2063 Lisp_Object | |
| 2064 coding_stream_coding_system (Lstream *stream) | |
| 2065 { | |
| 2066 return CODING_STREAM_DATA (stream)->codesys; | |
| 2067 } | |
| 2068 | |
| 2069 /* Change the coding system associated with a stream. */ | |
| 2070 | |
| 2071 void | |
| 2072 set_coding_stream_coding_system (Lstream *lstr, Lisp_Object codesys) | |
| 2073 { | |
| 2074 struct coding_stream *str = CODING_STREAM_DATA (lstr); | |
| 2075 if (EQ (str->orig_codesys, codesys)) | |
| 2076 return; | |
| 2077 /* We do the equivalent of closing the stream, destroying it, and | |
| 2078 reinitializing it. This includes flushing out the data and signalling | |
| 2079 EOF, if we're a writing stream; we also replace the type-specific data | |
| 2080 with the data appropriate for the new coding system. */ | |
| 2081 if (!NILP (str->codesys)) | |
| 2082 { | |
| 2083 if (lstr->flags & LSTREAM_FL_WRITE) | |
| 2084 { | |
| 2085 Lstream_flush (lstr); | |
| 2086 str->eof = 1; | |
| 2087 coding_writer (lstr, 0, 0); | |
| 2088 str->eof = 0; | |
| 2089 } | |
| 2090 MAYBE_XCODESYSMETH (str->codesys, finalize_coding_stream, (str)); | |
| 2091 } | |
| 2092 str->orig_codesys = codesys; | |
| 2093 str->codesys = coding_system_real_canonical (codesys); | |
| 2094 | |
| 2095 if (str->data) | |
| 2096 { | |
|
4976
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Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2097 xfree (str->data); |
| 771 | 2098 str->data = 0; |
| 428 | 2099 } |
| 771 | 2100 if (XCODING_SYSTEM_METHODS (str->codesys)->coding_data_size) |
| 1204 | 2101 { |
| 2102 str->data = | |
| 2103 xmalloc_and_zero (XCODING_SYSTEM_METHODS (str->codesys)-> | |
| 2104 coding_data_size); | |
| 2105 str->type = XCODING_SYSTEM_METHODS (str->codesys)->enumtype; | |
| 2106 } | |
| 771 | 2107 MAYBE_XCODESYSMETH (str->codesys, init_coding_stream, (str)); |
| 2108 /* The new coding system may have different ideas regarding whether its | |
| 2109 ends are characters or bytes. */ | |
| 2110 set_coding_character_mode (lstr); | |
| 2111 } | |
| 2112 | |
| 2113 /* WARNING WARNING WARNING WARNING!!!!! If you open up a coding | |
| 2114 stream for writing, no automatic code detection will be performed. | |
| 2115 The reason for this is that automatic code detection requires a | |
| 2116 seekable input. Things will also fail if you open a coding | |
| 2117 stream for reading using a non-fully-specified coding system and | |
| 2118 a non-seekable input stream. */ | |
| 2119 | |
| 2120 static Lisp_Object | |
| 2121 make_coding_stream_1 (Lstream *stream, Lisp_Object codesys, | |
| 800 | 2122 const char *mode, enum encode_decode direction, |
| 802 | 2123 int flags) |
| 771 | 2124 { |
| 2125 Lstream *lstr = Lstream_new (lstream_coding, mode); | |
| 2126 struct coding_stream *str = CODING_STREAM_DATA (lstr); | |
| 2127 | |
| 2128 codesys = Fget_coding_system (codesys); | |
| 2129 xzero (*str); | |
| 2130 str->codesys = Qnil; | |
| 2131 str->orig_codesys = Qnil; | |
| 2132 str->us = lstr; | |
| 2133 str->other_end = stream; | |
| 2134 str->convert_to = Dynarr_new (unsigned_char); | |
| 2135 str->convert_from = Dynarr_new (unsigned_char); | |
| 2136 str->direction = direction; | |
| 814 | 2137 if (flags & LSTREAM_FL_NO_CLOSE_OTHER) |
| 802 | 2138 str->no_close_other = 1; |
| 814 | 2139 if (flags & LSTREAM_FL_READ_ONE_BYTE_AT_A_TIME) |
| 802 | 2140 str->one_byte_at_a_time = 1; |
| 814 | 2141 if (!(flags & LSTREAM_FL_NO_INIT_CHAR_MODE_WHEN_READING)) |
| 2142 str->set_char_mode_on_us_when_reading = 1; | |
| 802 | 2143 |
| 771 | 2144 set_coding_stream_coding_system (lstr, codesys); |
| 793 | 2145 return wrap_lstream (lstr); |
| 771 | 2146 } |
| 2147 | |
| 814 | 2148 /* FLAGS: |
| 2149 | |
| 2150 LSTREAM_FL_NO_CLOSE_OTHER | |
| 2151 Don't close STREAM (the stream at the other end) when this stream is | |
| 2152 closed. | |
| 2153 | |
| 2154 LSTREAM_FL_READ_ONE_BYTE_AT_A_TIME | |
| 2155 When reading from STREAM, read and process one byte at a time rather | |
| 2156 than in large chunks. This is for reading from TTY's, so we don't | |
| 2157 block. #### We should instead create a non-blocking filedesc stream | |
| 2158 that emulates the behavior as necessary using select(), when the | |
| 2159 fcntls don't work. (As seems to be the case on Cygwin.) | |
| 2160 | |
| 2161 LSTREAM_FL_NO_INIT_CHAR_MODE_WHEN_READING | |
| 2162 When reading from STREAM, read and process one byte at a time rather | |
| 2163 than in large chunks. This is for reading from TTY's, so we don't | |
| 2164 block. #### We should instead create a non-blocking filedesc stream | |
| 2165 that emulates the behavior as necessary using select(), when the | |
| 2166 fcntls don't work. (As seems to be the case on Cygwin.) | |
| 2167 */ | |
| 771 | 2168 Lisp_Object |
| 2169 make_coding_input_stream (Lstream *stream, Lisp_Object codesys, | |
| 802 | 2170 enum encode_decode direction, int flags) |
| 771 | 2171 { |
| 800 | 2172 return make_coding_stream_1 (stream, codesys, "r", direction, |
| 802 | 2173 flags); |
| 771 | 2174 } |
| 2175 | |
| 814 | 2176 /* FLAGS: |
| 2177 | |
| 2178 LSTREAM_FL_NO_CLOSE_OTHER | |
| 2179 Don't close STREAM (the stream at the other end) when this stream is | |
| 2180 closed. | |
| 2181 */ | |
| 771 | 2182 Lisp_Object |
| 2183 make_coding_output_stream (Lstream *stream, Lisp_Object codesys, | |
| 802 | 2184 enum encode_decode direction, int flags) |
| 771 | 2185 { |
| 800 | 2186 return make_coding_stream_1 (stream, codesys, "w", direction, |
| 802 | 2187 flags); |
| 771 | 2188 } |
| 2189 | |
| 2190 static Lisp_Object | |
| 2191 encode_decode_coding_region (Lisp_Object start, Lisp_Object end, | |
| 2192 Lisp_Object coding_system, Lisp_Object buffer, | |
| 2193 enum encode_decode direction) | |
| 2194 { | |
| 2195 Charbpos b, e; | |
| 2196 struct buffer *buf = decode_buffer (buffer, 0); | |
| 2197 Lisp_Object instream = Qnil, to_outstream = Qnil, outstream = Qnil; | |
| 2198 Lisp_Object from_outstream = Qnil, auto_outstream = Qnil; | |
| 2199 Lisp_Object lb_outstream = Qnil; | |
| 2200 Lisp_Object next; | |
| 2201 Lstream *istr, *ostr; | |
| 2202 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5; | |
| 2203 struct gcpro ngcpro1; | |
| 2204 int source_char, sink_char; | |
| 2205 | |
| 2206 get_buffer_range_char (buf, start, end, &b, &e, 0); | |
| 2207 barf_if_buffer_read_only (buf, b, e); | |
| 2208 | |
| 2209 GCPRO5 (instream, to_outstream, outstream, from_outstream, lb_outstream); | |
| 2210 NGCPRO1 (auto_outstream); | |
| 2211 | |
| 2212 coding_system = Fget_coding_system (coding_system); | |
| 2213 source_char = encode_decode_source_sink_type_is_char (coding_system, | |
| 2214 CODING_SOURCE, | |
| 2215 direction); | |
| 2216 sink_char = encode_decode_source_sink_type_is_char (coding_system, | |
| 2217 CODING_SINK, | |
| 2218 direction); | |
| 2219 | |
| 2220 /* Order is IN <---> [TO] -> OUT -> [FROM] -> [AUTODETECT-EOL] -> LB */ | |
| 2221 instream = make_lisp_buffer_input_stream (buf, b, e, 0); | |
| 2222 next = lb_outstream = make_lisp_buffer_output_stream (buf, b, 0); | |
| 2223 | |
| 2224 if (direction == CODING_DECODE && | |
| 2225 XCODING_SYSTEM_EOL_TYPE (coding_system) == EOL_AUTODETECT) | |
| 2226 next = auto_outstream = | |
| 2227 make_coding_output_stream | |
| 800 | 2228 (XLSTREAM (next), Fget_coding_system (Qconvert_eol_autodetect), |
| 2229 CODING_DECODE, 0); | |
| 771 | 2230 |
| 2231 if (!sink_char) | |
| 2232 next = from_outstream = | |
| 800 | 2233 make_coding_output_stream (XLSTREAM (next), Qbinary, CODING_DECODE, 0); |
| 771 | 2234 outstream = make_coding_output_stream (XLSTREAM (next), coding_system, |
| 800 | 2235 direction, 0); |
| 771 | 2236 if (!source_char) |
| 428 | 2237 { |
| 771 | 2238 to_outstream = |
| 2239 make_coding_output_stream (XLSTREAM (outstream), | |
| 800 | 2240 Qbinary, CODING_ENCODE, 0); |
| 771 | 2241 ostr = XLSTREAM (to_outstream); |
| 2242 } | |
| 2243 else | |
| 2244 ostr = XLSTREAM (outstream); | |
| 2245 istr = XLSTREAM (instream); | |
| 2246 | |
| 2247 /* The chain of streams looks like this: | |
| 2248 | |
| 2297 | 2249 [BUFFER] <----- (( read from/send to loop )) |
| 771 | 2250 ------> [CHAR->BYTE i.e. ENCODE AS BINARY if source is |
| 2251 in bytes] | |
| 2252 ------> [ENCODE/DECODE AS SPECIFIED] | |
| 2253 ------> [BYTE->CHAR i.e. DECODE AS BINARY | |
| 2254 if sink is in bytes] | |
| 2255 ------> [AUTODETECT EOL if | |
| 2256 we're decoding and | |
| 2257 coding system calls | |
| 2258 for this] | |
| 2259 ------> [BUFFER] | |
| 2260 */ | |
| 2367 | 2261 |
| 2262 /* #### See comment | |
| 2263 | |
| 2264 EFFICIENCY OF CODING CONVERSION WITH MULTIPLE COPIES/CHAINS | |
| 2265 | |
| 2266 in text.c. | |
| 2267 */ | |
| 2268 | |
| 771 | 2269 while (1) |
| 2270 { | |
| 2271 char tempbuf[1024]; /* some random amount */ | |
| 2272 Charbpos newpos, even_newer_pos; | |
| 2273 Charbpos oldpos = lisp_buffer_stream_startpos (istr); | |
| 2274 Bytecount size_in_bytes = | |
| 2275 Lstream_read (istr, tempbuf, sizeof (tempbuf)); | |
| 2276 | |
| 2277 if (!size_in_bytes) | |
| 2278 break; | |
| 2279 newpos = lisp_buffer_stream_startpos (istr); | |
| 2280 Lstream_write (ostr, tempbuf, size_in_bytes); | |
| 2281 even_newer_pos = lisp_buffer_stream_startpos (istr); | |
| 2282 buffer_delete_range (buf, even_newer_pos - (newpos - oldpos), | |
| 2283 even_newer_pos, 0); | |
| 428 | 2284 } |
| 771 | 2285 |
| 2286 { | |
| 2287 Charcount retlen = | |
| 2288 lisp_buffer_stream_startpos (XLSTREAM (instream)) - b; | |
| 2289 Lstream_close (istr); | |
| 2290 Lstream_close (ostr); | |
| 2291 NUNGCPRO; | |
| 2292 UNGCPRO; | |
| 2293 Lstream_delete (istr); | |
| 2294 if (!NILP (from_outstream)) | |
| 2295 Lstream_delete (XLSTREAM (from_outstream)); | |
| 2296 Lstream_delete (XLSTREAM (outstream)); | |
| 2297 if (!NILP (to_outstream)) | |
| 2298 Lstream_delete (XLSTREAM (to_outstream)); | |
| 2299 if (!NILP (auto_outstream)) | |
| 2300 Lstream_delete (XLSTREAM (auto_outstream)); | |
| 2301 Lstream_delete (XLSTREAM (lb_outstream)); | |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
2302 return make_fixnum (retlen); |
| 771 | 2303 } |
| 2304 } | |
| 2305 | |
| 3302 | 2306 DEFUN ("decode-coding-region", Fdecode_coding_region, 3, 4, |
| 2307 "*r\nzDecode from coding system: \ni", /* | |
| 771 | 2308 Decode the text between START and END which is encoded in CODING-SYSTEM. |
| 2309 This is useful if you've read in encoded text from a file without decoding | |
| 2310 it (e.g. you read in a JIS-formatted file but used the `binary' or | |
| 2311 `no-conversion' coding system, so that it shows up as "^[$B!<!+^[(B"). | |
| 2312 Return length of decoded text. | |
| 3302 | 2313 BUFFER defaults to the current buffer if unspecified, and when interactive. |
| 771 | 2314 */ |
| 2315 (start, end, coding_system, buffer)) | |
| 2316 { | |
| 2317 return encode_decode_coding_region (start, end, coding_system, buffer, | |
| 2318 CODING_DECODE); | |
| 2319 } | |
| 2320 | |
| 3302 | 2321 DEFUN ("encode-coding-region", Fencode_coding_region, 3, 4, |
| 2322 "*r\nzEncode to coding system: \ni", /* | |
| 771 | 2323 Encode the text between START and END using CODING-SYSTEM. |
| 2324 This will, for example, convert Japanese characters into stuff such as | |
| 3302 | 2325 "^[$B!<!+^[(B" if you use the JIS encoding. Return length of encoded text. |
| 2326 BUFFER defaults to the current buffer if unspecified, and when interactive. | |
| 771 | 2327 */ |
| 2328 (start, end, coding_system, buffer)) | |
| 2329 { | |
| 2330 return encode_decode_coding_region (start, end, coding_system, buffer, | |
| 2331 CODING_ENCODE); | |
| 428 | 2332 } |
| 2333 | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2334 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
|
2335 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
|
2336 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2337 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
|
2338 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
|
2339 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2340 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
|
2341 buffer. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2342 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2343 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
|
2344 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
|
2345 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
|
2346 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
|
2347 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
|
2348 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
|
2349 `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
|
2350 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2351 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
|
2352 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
|
2353 corresponding to the ISO 8859-1 characters with the same numerical values |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
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parents:
4647
diff
changeset
|
2354 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
|
2355 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2356 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
|
2357 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
|
2358 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2359 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
|
2360 region using `query-coding-warning-face'. It defaults to nil. |
|
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 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
|
2363 `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
|
2364 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
|
2365 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
|
2366 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
|
2367 of the unencodable characters. |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2368 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
2369 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
|
2370 IGNORE-INVALID-SEQUENCESP non-nil map to the symbol `invalid-sequence'; |
|
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2371 other ranges map to the symbol `unencodable'. If IGNORE-INVALID-SEQUENCESP |
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2372 is non-nil, all ranges will map to the symbol `unencodable'. See |
|
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2373 `make-range-table' for more details of range tables. |
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2374 */ |
|
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2375 (start, end, coding_system, buffer, ignore_invalid_sequencesp, |
|
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2376 errorp, highlight)) |
|
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2377 { |
|
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2378 Charbpos b, e; |
|
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2379 struct buffer *buf = decode_buffer (buffer, 1); |
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2380 Lisp_Object result; |
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2381 int flags = 0, speccount = specpdl_depth (); |
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2382 |
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2383 coding_system = Fget_coding_system (coding_system); |
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2384 |
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2385 get_buffer_range_char (buf, start, end, &b, &e, 0); |
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2386 |
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2387 if (buf != current_buffer) |
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2388 { |
|
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2389 record_unwind_protect (save_current_buffer_restore, Fcurrent_buffer ()); |
|
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2390 set_buffer_internal (buf); |
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2391 } |
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2392 |
|
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2393 record_unwind_protect (save_excursion_restore, save_excursion_save ()); |
|
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2394 |
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2395 BUF_SET_PT (buf, b); |
|
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2396 |
|
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2397 if (!NILP (ignore_invalid_sequencesp)) |
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2398 { |
|
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2399 flags |= QUERY_METHOD_IGNORE_INVALID_SEQUENCES; |
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2400 } |
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2401 |
|
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2402 if (!NILP (errorp)) |
|
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2403 { |
|
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2404 flags |= QUERY_METHOD_ERRORP; |
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2405 } |
|
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2406 |
|
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2407 if (!NILP (highlight)) |
|
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2408 { |
|
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|
2409 flags |= QUERY_METHOD_HIGHLIGHT; |
|
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2410 } |
|
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2411 |
|
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2412 result = XCODESYSMETH_OR_GIVEN (coding_system, query, |
|
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|
2413 (coding_system, buf, e, flags), Qunbound); |
|
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2414 |
|
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2415 if (UNBOUNDP (result)) |
|
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2416 { |
|
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|
2417 signal_error (Qtext_conversion_error, |
|
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|
2418 "Coding system doesn't say what it can encode", |
|
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2419 XCODING_SYSTEM_NAME (coding_system)); |
|
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2420 } |
|
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2421 |
|
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|
2422 result = (NILP (result)) ? Qt : values2 (Qnil, result); |
|
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2423 |
|
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|
2424 return unbind_to_1 (speccount, result); |
|
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|
2425 } |
|
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2426 |
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2427 |
| 428 | 2428 |
| 2429 /************************************************************************/ | |
| 771 | 2430 /* Chain methods */ |
| 428 | 2431 /************************************************************************/ |
| 2432 | |
| 771 | 2433 /* #### Need a way to create "opposite-direction" coding systems. */ |
| 2434 | |
| 2435 /* Chain two or more coding systems together to make a combination coding | |
| 2436 system. */ | |
| 2437 | |
| 2438 struct chain_coding_system | |
| 2439 { | |
| 2440 /* List of coding systems, in decode order */ | |
| 2441 Lisp_Object *chain; | |
| 2442 /* Number of coding systems in list */ | |
| 2443 int count; | |
| 2444 /* Coding system to return as a result of canonicalize-after-coding */ | |
| 2445 Lisp_Object canonicalize_after_coding; | |
| 2446 }; | |
| 2447 | |
| 2448 struct chain_coding_stream | |
| 2449 { | |
| 2450 int initted; | |
| 2451 /* Lstreams for chain coding system */ | |
| 2452 Lisp_Object *lstreams; | |
| 2453 int lstream_count; | |
| 2454 }; | |
| 2455 | |
| 1204 | 2456 static const struct memory_description chain_coding_system_description[] = { |
| 2457 { XD_INT, offsetof (struct chain_coding_system, count) }, | |
| 2367 | 2458 { XD_BLOCK_PTR, offsetof (struct chain_coding_system, chain), |
| 2551 | 2459 XD_INDIRECT (0, 0), { &lisp_object_description } }, |
| 1204 | 2460 { XD_LISP_OBJECT, offsetof (struct chain_coding_system, |
| 2461 canonicalize_after_coding) }, | |
| 771 | 2462 { XD_END } |
| 2463 }; | |
| 2464 | |
| 1204 | 2465 static const struct memory_description chain_coding_stream_description_1 [] = { |
| 2466 { XD_INT, offsetof (struct chain_coding_stream, lstream_count) }, | |
| 2367 | 2467 { XD_BLOCK_PTR, offsetof (struct chain_coding_stream, lstreams), |
| 2551 | 2468 XD_INDIRECT (0, 0), { &lisp_object_description } }, |
| 771 | 2469 { XD_END } |
| 2470 }; | |
| 2471 | |
| 1204 | 2472 const struct sized_memory_description chain_coding_stream_description = { |
| 2473 sizeof (struct chain_coding_stream), chain_coding_stream_description_1 | |
| 2474 }; | |
| 2475 | |
| 2476 DEFINE_CODING_SYSTEM_TYPE_WITH_DATA (chain); | |
| 2477 | |
| 771 | 2478 static Lisp_Object |
| 2479 chain_canonicalize (Lisp_Object codesys) | |
| 2480 { | |
| 2481 /* We make use of the fact that this method is called at init time, after | |
| 2482 properties have been parsed. init_method is called too early. */ | |
| 2483 /* #### It's not clear we need this whole chain-canonicalize mechanism | |
| 2484 any more. */ | |
| 2485 Lisp_Object chain = Flist (XCODING_SYSTEM_CHAIN_COUNT (codesys), | |
| 2486 XCODING_SYSTEM_CHAIN_CHAIN (codesys)); | |
| 2487 chain = Fcons (XCODING_SYSTEM_PRE_WRITE_CONVERSION (codesys), | |
| 2488 Fcons (XCODING_SYSTEM_POST_READ_CONVERSION (codesys), | |
| 2489 chain)); | |
| 2490 Fputhash (chain, codesys, Vchain_canonicalize_hash_table); | |
| 2491 return codesys; | |
| 2492 } | |
| 2493 | |
| 2494 static Lisp_Object | |
| 2495 chain_canonicalize_after_coding (struct coding_stream *str) | |
| 2496 { | |
| 2497 Lisp_Object cac = | |
| 2498 XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (str->codesys); | |
| 2499 if (!NILP (cac)) | |
| 2500 return cac; | |
| 2501 return str->codesys; | |
| 2502 #if 0 | |
| 2503 struct chain_coding_stream *data = CODING_STREAM_TYPE_DATA (str, chain); | |
| 2504 Lisp_Object us = str->codesys, codesys; | |
| 2505 int i; | |
| 2506 Lisp_Object chain; | |
| 2507 Lisp_Object tail; | |
| 2508 int changed = 0; | |
| 2509 | |
| 2510 /* #### It's not clear we need this whole chain-canonicalize mechanism | |
| 2511 any more. */ | |
| 2512 if (str->direction == CODING_ENCODE || !data->initted) | |
| 2513 return us; | |
| 2514 | |
| 2515 chain = Flist (XCODING_SYSTEM_CHAIN_COUNT (us), | |
| 2516 XCODING_SYSTEM_CHAIN_CHAIN (us)); | |
| 2517 | |
| 2518 tail = chain; | |
| 2519 for (i = 0; i < XCODING_SYSTEM_CHAIN_COUNT (us); i++) | |
| 2520 { | |
| 2521 codesys = (coding_stream_canonicalize_after_coding | |
| 2522 (XLSTREAM (data->lstreams[i]))); | |
| 2523 if (!EQ (codesys, XCAR (tail))) | |
| 2524 changed = 1; | |
| 2525 XCAR (tail) = codesys; | |
| 2526 tail = XCDR (tail); | |
| 2527 } | |
| 2528 | |
| 2529 if (!changed) | |
| 2530 return us; | |
| 2531 | |
| 2532 chain = delq_no_quit (Qnil, chain); | |
| 2533 | |
| 2534 if (NILP (XCODING_SYSTEM_PRE_WRITE_CONVERSION (us)) && | |
| 2535 NILP (XCODING_SYSTEM_POST_READ_CONVERSION (us))) | |
| 2536 { | |
| 2537 if (NILP (chain)) | |
| 2538 return Qnil; | |
| 2539 if (NILP (XCDR (chain))) | |
| 2540 return XCAR (chain); | |
| 2541 } | |
| 2542 | |
| 2543 codesys = Fgethash (Fcons (XCODING_SYSTEM_PRE_WRITE_CONVERSION (us), | |
| 2544 Fcons (XCODING_SYSTEM_POST_READ_CONVERSION (us), | |
| 2545 chain)), Vchain_canonicalize_hash_table, | |
| 2546 Qnil); | |
| 2547 if (!NILP (codesys)) | |
| 2548 return codesys; | |
| 2549 return make_internal_coding_system | |
| 2550 (us, "internal-chain-canonicalizer-wrapper", | |
| 2551 Qchain, Qunbound, list2 (Qchain, chain)); | |
| 2552 #endif /* 0 */ | |
| 2553 } | |
| 2554 | |
| 2555 static void | |
| 2556 chain_init (Lisp_Object codesys) | |
| 2557 { | |
| 2558 XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (codesys) = Qnil; | |
| 2559 } | |
| 2560 | |
| 2561 static void | |
| 2562 chain_mark (Lisp_Object codesys) | |
| 2563 { | |
| 2564 int i; | |
| 2565 | |
| 2566 for (i = 0; i < XCODING_SYSTEM_CHAIN_COUNT (codesys); i++) | |
| 2567 mark_object (XCODING_SYSTEM_CHAIN_CHAIN (codesys)[i]); | |
| 2568 mark_object (XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (codesys)); | |
| 2569 } | |
| 2570 | |
| 2571 static void | |
| 2572 chain_mark_coding_stream_1 (struct chain_coding_stream *data) | |
| 2573 { | |
| 2574 int i; | |
| 2575 | |
| 2576 for (i = 0; i < data->lstream_count; i++) | |
| 2577 mark_object (data->lstreams[i]); | |
| 2578 } | |
| 2579 | |
| 2580 static void | |
| 2581 chain_mark_coding_stream (struct coding_stream *str) | |
| 2582 { | |
| 2583 chain_mark_coding_stream_1 (CODING_STREAM_TYPE_DATA (str, chain)); | |
| 2584 } | |
| 2585 | |
| 2586 static void | |
| 2587 chain_print (Lisp_Object cs, Lisp_Object printcharfun, int escapeflag) | |
| 2588 { | |
| 2589 int i; | |
| 2590 | |
|
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2591 write_ascstring (printcharfun, "("); |
| 771 | 2592 for (i = 0; i < XCODING_SYSTEM_CHAIN_COUNT (cs); i++) |
| 2593 { | |
|
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|
2594 write_ascstring (printcharfun, i == 0 ? "" : "->"); |
| 771 | 2595 print_coding_system_in_print_method (XCODING_SYSTEM_CHAIN_CHAIN (cs)[i], |
| 2596 printcharfun, escapeflag); | |
| 2597 } | |
| 2598 { | |
| 2599 Lisp_Object cac = XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (cs); | |
| 2600 if (!NILP (cac)) | |
| 2601 { | |
| 2602 if (i > 0) | |
|
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|
2603 write_ascstring (printcharfun, " "); |
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|
2604 write_ascstring (printcharfun, "canonicalize-after-coding="); |
| 771 | 2605 print_coding_system_in_print_method (cac, printcharfun, escapeflag); |
| 2606 } | |
| 2607 } | |
| 2608 | |
|
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2609 write_ascstring (printcharfun, ")"); |
| 771 | 2610 } |
| 2611 | |
| 2612 static void | |
| 2613 chain_rewind_coding_stream_1 (struct chain_coding_stream *data) | |
| 2614 { | |
| 2615 /* Each will rewind the next; there is always at least one stream (the | |
| 2616 dynarr stream at the end) if we're initted */ | |
| 2617 if (data->initted) | |
| 2618 Lstream_rewind (XLSTREAM (data->lstreams[0])); | |
| 2619 } | |
| 2620 | |
| 2621 static void | |
| 2622 chain_rewind_coding_stream (struct coding_stream *str) | |
| 2623 { | |
| 2624 chain_rewind_coding_stream_1 (CODING_STREAM_TYPE_DATA (str, chain)); | |
| 2625 } | |
| 2626 | |
| 2627 static void | |
| 2628 chain_init_coding_streams_1 (struct chain_coding_stream *data, | |
| 2629 unsigned_char_dynarr *dst, | |
| 2630 int ncodesys, Lisp_Object *codesys, | |
| 2631 enum encode_decode direction) | |
| 2632 { | |
| 2633 int i; | |
| 2634 Lisp_Object lstream_out; | |
| 2635 | |
| 2636 data->lstream_count = ncodesys + 1; | |
| 2637 data->lstreams = xnew_array (Lisp_Object, data->lstream_count); | |
| 2638 | |
| 2639 lstream_out = make_dynarr_output_stream (dst); | |
| 2640 Lstream_set_buffering (XLSTREAM (lstream_out), LSTREAM_UNBUFFERED, 0); | |
| 2641 data->lstreams[data->lstream_count - 1] = lstream_out; | |
| 2642 | |
| 2643 for (i = ncodesys - 1; i >= 0; i--) | |
| 2644 { | |
| 2645 data->lstreams[i] = | |
| 2646 make_coding_output_stream | |
| 2647 (XLSTREAM (lstream_out), | |
| 2648 codesys[direction == CODING_ENCODE ? ncodesys - (i + 1) : i], | |
| 800 | 2649 direction, 0); |
| 771 | 2650 lstream_out = data->lstreams[i]; |
| 2651 Lstream_set_buffering (XLSTREAM (lstream_out), LSTREAM_UNBUFFERED, | |
| 2652 0); | |
| 2653 } | |
| 2654 data->initted = 1; | |
| 2655 } | |
| 2656 | |
| 2657 static Bytecount | |
| 2658 chain_convert (struct coding_stream *str, const UExtbyte *src, | |
| 2659 unsigned_char_dynarr *dst, Bytecount n) | |
| 2660 { | |
| 2661 struct chain_coding_stream *data = CODING_STREAM_TYPE_DATA (str, chain); | |
| 2662 | |
| 2663 if (str->eof) | |
| 2664 { | |
| 2665 /* Each will close the next; there is always at least one stream (the | |
| 2666 dynarr stream at the end) if we're initted. We need to close now | |
| 2667 because more data may be generated. */ | |
| 2668 if (data->initted) | |
| 2669 Lstream_close (XLSTREAM (data->lstreams[0])); | |
| 2670 return n; | |
| 2671 } | |
| 2672 | |
| 2673 if (!data->initted) | |
| 2674 chain_init_coding_streams_1 | |
| 2675 (data, dst, XCODING_SYSTEM_CHAIN_COUNT (str->codesys), | |
| 2676 XCODING_SYSTEM_CHAIN_CHAIN (str->codesys), str->direction); | |
| 2677 | |
| 2678 if (Lstream_write (XLSTREAM (data->lstreams[0]), src, n) < 0) | |
| 2679 return -1; | |
| 2680 return n; | |
| 2681 } | |
| 2682 | |
| 2683 static void | |
| 2684 chain_finalize_coding_stream_1 (struct chain_coding_stream *data) | |
| 2685 { | |
| 2686 if (data->lstreams) | |
| 2687 { | |
| 2297 | 2688 /* During GC, these objects are unmarked, and are about to be freed. |
| 2689 We do NOT want them on the free list, and that will cause lots of | |
| 2690 nastiness including crashes. Just let them be freed normally. */ | |
| 771 | 2691 if (!gc_in_progress) |
| 2692 { | |
| 2693 int i; | |
| 2297 | 2694 /* Order of deletion is important here! Delete from the head of |
| 2695 the chain and work your way towards the tail. In general, | |
| 2696 when you delete an object, there should be *NO* pointers to it | |
| 2697 anywhere. Deleting back-to-front would be a problem because | |
| 2698 there are pointers going forward. If there were pointers in | |
| 2699 both directions, you'd have to disconnect the pointers to a | |
| 2700 particular object before deleting it. */ | |
| 771 | 2701 for (i = 0; i < data->lstream_count; i++) |
| 2702 Lstream_delete (XLSTREAM ((data->lstreams)[i])); | |
| 2703 } | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2704 xfree (data->lstreams); |
|
5169
6c6d78781d59
cleanup of code related to xfree(), better KKCC backtrace capabilities, document XD_INLINE_LISP_OBJECT_BLOCK_PTR, fix some memory leaks, other code cleanup
Ben Wing <ben@xemacs.org>
parents:
5142
diff
changeset
|
2705 data->lstreams = 0; |
| 771 | 2706 } |
| 2707 } | |
| 2708 | |
| 2709 static void | |
| 2710 chain_finalize_coding_stream (struct coding_stream *str) | |
| 2711 { | |
| 2712 chain_finalize_coding_stream_1 (CODING_STREAM_TYPE_DATA (str, chain)); | |
| 2713 } | |
| 2714 | |
| 2715 static void | |
| 2716 chain_finalize (Lisp_Object c) | |
| 2717 { | |
| 2718 if (XCODING_SYSTEM_CHAIN_CHAIN (c)) | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2719 xfree (XCODING_SYSTEM_CHAIN_CHAIN (c)); |
| 771 | 2720 } |
| 2721 | |
| 428 | 2722 static int |
| 771 | 2723 chain_putprop (Lisp_Object codesys, Lisp_Object key, Lisp_Object value) |
| 2724 { | |
| 2725 if (EQ (key, Qchain)) | |
| 2726 { | |
| 2727 Lisp_Object *cslist; | |
| 2728 int count = 0; | |
| 2729 int i; | |
| 2730 | |
| 2367 | 2731 { |
| 2732 EXTERNAL_LIST_LOOP_2 (elt, value) | |
| 2733 { | |
| 2734 Fget_coding_system (elt); | |
| 2735 count++; | |
| 2736 } | |
| 2737 } | |
| 771 | 2738 |
| 2739 cslist = xnew_array (Lisp_Object, count); | |
| 2740 XCODING_SYSTEM_CHAIN_CHAIN (codesys) = cslist; | |
| 2741 | |
| 2742 count = 0; | |
| 2367 | 2743 { |
| 2744 EXTERNAL_LIST_LOOP_2 (elt, value) | |
| 2745 { | |
| 2746 cslist[count] = Fget_coding_system (elt); | |
| 2747 count++; | |
| 2748 } | |
| 2749 } | |
| 771 | 2750 |
| 2751 XCODING_SYSTEM_CHAIN_COUNT (codesys) = count; | |
| 2752 | |
| 2753 for (i = 0; i < count - 1; i++) | |
| 2754 { | |
| 2755 if (decoding_source_sink_type_is_char (cslist[i], CODING_SINK) != | |
| 2756 decoding_source_sink_type_is_char (cslist[i + 1], CODING_SOURCE)) | |
| 2757 invalid_argument_2 ("Sink of first must match source of second", | |
| 2758 cslist[i], cslist[i + 1]); | |
| 2759 } | |
| 2760 } | |
| 2761 else if (EQ (key, Qcanonicalize_after_coding)) | |
| 2762 XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (codesys) = | |
| 2763 Fget_coding_system (value); | |
| 2764 else | |
| 2765 return 0; | |
| 2766 return 1; | |
| 2767 } | |
| 2768 | |
| 2769 static Lisp_Object | |
| 2770 chain_getprop (Lisp_Object coding_system, Lisp_Object prop) | |
| 2771 { | |
| 2772 if (EQ (prop, Qchain)) | |
| 2773 { | |
| 2774 Lisp_Object result = Qnil; | |
| 2775 int i; | |
| 2776 | |
| 2777 for (i = 0; i < XCODING_SYSTEM_CHAIN_COUNT (coding_system); i++) | |
| 2778 result = Fcons (XCODING_SYSTEM_CHAIN_CHAIN (coding_system)[i], | |
| 2779 result); | |
| 2780 | |
| 2781 return Fnreverse (result); | |
| 2782 } | |
| 2783 else if (EQ (prop, Qcanonicalize_after_coding)) | |
| 2784 return XCODING_SYSTEM_CHAIN_CANONICALIZE_AFTER_CODING (coding_system); | |
| 2785 else | |
| 2786 return Qunbound; | |
| 2787 } | |
| 2788 | |
| 2789 static enum source_sink_type | |
| 2790 chain_conversion_end_type (Lisp_Object codesys) | |
| 2791 { | |
| 2792 Lisp_Object *cslist = XCODING_SYSTEM_CHAIN_CHAIN (codesys); | |
| 2793 int n = XCODING_SYSTEM_CHAIN_COUNT (codesys); | |
| 2794 int charp_source, charp_sink; | |
| 2795 | |
| 2796 if (n == 0) | |
| 2797 return DECODES_BYTE_TO_BYTE; /* arbitrary */ | |
| 2798 charp_source = decoding_source_sink_type_is_char (cslist[0], CODING_SOURCE); | |
| 2799 charp_sink = decoding_source_sink_type_is_char (cslist[n - 1], CODING_SINK); | |
| 2800 | |
| 2801 switch (charp_source * 2 + charp_sink) | |
| 2802 { | |
| 2803 case 0: return DECODES_BYTE_TO_BYTE; | |
| 2804 case 1: return DECODES_BYTE_TO_CHARACTER; | |
| 2805 case 2: return DECODES_CHARACTER_TO_BYTE; | |
| 2806 case 3: return DECODES_CHARACTER_TO_CHARACTER; | |
| 2807 } | |
| 2808 | |
| 2500 | 2809 ABORT (); |
| 771 | 2810 return DECODES_BYTE_TO_BYTE; |
| 2811 } | |
| 2812 | |
| 2813 | |
| 2814 /************************************************************************/ | |
| 2815 /* No-conversion methods */ | |
| 2816 /************************************************************************/ | |
| 2817 | |
| 2818 /* "No conversion"; used for binary files. We use quotes because there | |
| 2819 really is some conversion being applied (it does byte<->char | |
| 2820 conversion), but it appears to the user as if the text is read in | |
| 2297 | 2821 without conversion. |
| 2822 | |
| 2823 #### Shouldn't we _call_ it that, then? And while we're at it, | |
| 2824 separate it into "to_internal" and "to_external"? */ | |
| 771 | 2825 DEFINE_CODING_SYSTEM_TYPE (no_conversion); |
| 2826 | |
| 2827 /* This is used when reading in "binary" files -- i.e. files that may | |
| 2828 contain all 256 possible byte values and that are not to be | |
| 2829 interpreted as being in any particular encoding. */ | |
| 2830 static Bytecount | |
| 2831 no_conversion_convert (struct coding_stream *str, | |
| 2832 const UExtbyte *src, | |
| 2833 unsigned_char_dynarr *dst, Bytecount n) | |
| 2834 { | |
| 2835 UExtbyte c; | |
| 2836 unsigned int ch = str->ch; | |
| 2837 Bytecount orign = n; | |
| 2838 | |
| 2839 if (str->direction == CODING_DECODE) | |
| 2840 { | |
| 2841 while (n--) | |
| 2842 { | |
| 2843 c = *src++; | |
| 2844 | |
| 2845 DECODE_ADD_BINARY_CHAR (c, dst); | |
| 2846 } | |
| 2847 | |
| 2848 if (str->eof) | |
| 2849 DECODE_OUTPUT_PARTIAL_CHAR (ch, dst); | |
| 2850 } | |
| 2851 else | |
| 2852 { | |
| 2853 | |
| 2854 while (n--) | |
| 2855 { | |
| 2856 c = *src++; | |
| 826 | 2857 if (byte_ascii_p (c)) |
| 771 | 2858 { |
| 2859 assert (ch == 0); | |
| 2860 Dynarr_add (dst, c); | |
| 2861 } | |
| 2862 #ifdef MULE | |
| 867 | 2863 else if (ibyte_leading_byte_p (c)) |
| 771 | 2864 { |
| 2865 assert (ch == 0); | |
| 2866 if (c == LEADING_BYTE_LATIN_ISO8859_1 || | |
| 2867 c == LEADING_BYTE_CONTROL_1) | |
| 2868 ch = c; | |
| 2869 else | |
| 2297 | 2870 /* #### This is just plain unacceptable. */ |
| 771 | 2871 Dynarr_add (dst, '~'); /* untranslatable character */ |
| 2872 } | |
| 2873 else | |
| 2874 { | |
| 2875 if (ch == LEADING_BYTE_LATIN_ISO8859_1) | |
| 2876 Dynarr_add (dst, c); | |
| 2877 else if (ch == LEADING_BYTE_CONTROL_1) | |
| 2878 { | |
| 2879 assert (c < 0xC0); | |
| 2880 Dynarr_add (dst, c - 0x20); | |
| 2881 } | |
| 2882 /* else it should be the second or third byte of an | |
| 2883 untranslatable character, so ignore it */ | |
| 2884 ch = 0; | |
| 2885 } | |
| 2886 #endif /* MULE */ | |
| 2887 | |
| 2888 } | |
| 2889 } | |
| 2890 | |
| 2891 str->ch = ch; | |
| 2892 return orign; | |
| 2893 } | |
| 2894 | |
| 2895 DEFINE_DETECTOR (no_conversion); | |
| 2896 DEFINE_DETECTOR_CATEGORY (no_conversion, no_conversion); | |
| 2897 | |
| 2898 struct no_conversion_detector | |
| 2899 { | |
| 2900 int dummy; | |
| 2901 }; | |
| 2902 | |
| 2903 static void | |
| 2286 | 2904 no_conversion_detect (struct detection_state *st, const UExtbyte *UNUSED (src), |
| 2905 Bytecount UNUSED (n)) | |
| 771 | 2906 { |
| 2907 /* Hack until we get better handling of this stuff! */ | |
| 2908 DET_RESULT (st, no_conversion) = DET_SLIGHTLY_LIKELY; | |
| 2909 } | |
| 2910 | |
| 2911 | |
| 2912 /************************************************************************/ | |
| 2913 /* Convert-eol methods */ | |
| 2914 /************************************************************************/ | |
| 2915 | |
| 2916 /* This is used to handle end-of-line (EOL) differences. It is | |
| 2819 | 2917 character-to-character, and works (when encoding) *BEFORE* sending data to |
| 2918 the main encoding routine -- thus, that routine must handle different EOL | |
| 2919 types itself if it does line-oriented type processing. This is unavoidable | |
| 2920 because we don't know whether the output of the main encoding routine is | |
| 2921 ASCII compatible (UTF-16 is definitely not, for example). [[ sjt sez this | |
| 2922 is bogus. There should be _no_ EOL processing (or processing of any kind) | |
| 2923 after conversion to external. ]] | |
| 771 | 2924 |
| 793 | 2925 There is one parameter: `subtype', either `cr', `lf', `crlf', or nil. |
| 771 | 2926 */ |
| 2927 | |
| 2928 struct convert_eol_coding_system | |
| 2929 { | |
| 2930 enum eol_type subtype; | |
| 2132 | 2931 int dummy; /* On some architectures (eg ia64) the portable dumper can |
| 2932 produce unaligned access errors without this field. Probably | |
| 2933 because the combined structure of this structure and | |
| 2934 Lisp_Coding_System is not properly aligned. */ | |
| 771 | 2935 }; |
| 2936 | |
| 2937 #define CODING_SYSTEM_CONVERT_EOL_SUBTYPE(codesys) \ | |
| 2938 (CODING_SYSTEM_TYPE_DATA (codesys, convert_eol)->subtype) | |
| 2939 #define XCODING_SYSTEM_CONVERT_EOL_SUBTYPE(codesys) \ | |
| 2940 (XCODING_SYSTEM_TYPE_DATA (codesys, convert_eol)->subtype) | |
| 2941 | |
| 2942 struct convert_eol_coding_stream | |
| 2943 { | |
| 2944 enum eol_type actual; | |
| 2945 }; | |
| 2946 | |
| 1204 | 2947 static const struct memory_description |
| 771 | 2948 convert_eol_coding_system_description[] = { |
| 2949 { XD_END } | |
| 2950 }; | |
| 2951 | |
| 1204 | 2952 DEFINE_CODING_SYSTEM_TYPE_WITH_DATA (convert_eol); |
| 2953 | |
| 771 | 2954 static void |
| 2286 | 2955 convert_eol_print (Lisp_Object cs, Lisp_Object printcharfun, |
| 2956 int UNUSED (escapeflag)) | |
| 771 | 2957 { |
| 2958 struct convert_eol_coding_system *data = | |
| 2959 XCODING_SYSTEM_TYPE_DATA (cs, convert_eol); | |
| 2960 | |
| 2961 write_fmt_string (printcharfun, "(%s)", | |
| 2962 data->subtype == EOL_LF ? "lf" : | |
| 2963 data->subtype == EOL_CRLF ? "crlf" : | |
| 2964 data->subtype == EOL_CR ? "cr" : | |
| 793 | 2965 data->subtype == EOL_AUTODETECT ? "nil" : |
| 2500 | 2966 (ABORT(), "")); |
| 771 | 2967 } |
| 2968 | |
| 2969 static enum source_sink_type | |
| 2286 | 2970 convert_eol_conversion_end_type (Lisp_Object UNUSED (codesys)) |
| 771 | 2971 { |
| 2972 return DECODES_CHARACTER_TO_CHARACTER; | |
| 2973 } | |
| 2974 | |
| 2975 static int | |
| 2976 convert_eol_putprop (Lisp_Object codesys, | |
| 2977 Lisp_Object key, | |
| 2978 Lisp_Object value) | |
| 2979 { | |
| 2980 struct convert_eol_coding_system *data = | |
| 2981 XCODING_SYSTEM_TYPE_DATA (codesys, convert_eol); | |
| 2982 | |
| 2983 if (EQ (key, Qsubtype)) | |
| 2984 { | |
| 2985 if (EQ (value, Qlf) /* || EQ (value, Qunix) */) | |
| 2986 data->subtype = EOL_LF; | |
| 2987 else if (EQ (value, Qcrlf) /* || EQ (value, Qdos) */) | |
| 2988 data->subtype = EOL_CRLF; | |
| 2989 else if (EQ (value, Qcr) /* || EQ (value, Qmac) */) | |
| 2990 data->subtype = EOL_CR; | |
| 793 | 2991 else if (EQ (value, Qnil)) |
| 771 | 2992 data->subtype = EOL_AUTODETECT; |
| 2993 else invalid_constant ("Unrecognized eol type", value); | |
| 2994 } | |
| 2995 else | |
| 2996 return 0; | |
| 2997 return 1; | |
| 2998 } | |
| 2999 | |
| 3000 static Lisp_Object | |
| 3001 convert_eol_getprop (Lisp_Object coding_system, Lisp_Object prop) | |
| 3002 { | |
| 3003 struct convert_eol_coding_system *data = | |
| 3004 XCODING_SYSTEM_TYPE_DATA (coding_system, convert_eol); | |
| 3005 | |
| 3006 if (EQ (prop, Qsubtype)) | |
| 3007 { | |
| 3008 switch (data->subtype) | |
| 3009 { | |
| 3010 case EOL_LF: return Qlf; | |
| 3011 case EOL_CRLF: return Qcrlf; | |
| 3012 case EOL_CR: return Qcr; | |
| 793 | 3013 case EOL_AUTODETECT: return Qnil; |
| 2500 | 3014 default: ABORT (); |
| 771 | 3015 } |
| 3016 } | |
| 3017 | |
| 3018 return Qunbound; | |
| 3019 } | |
| 3020 | |
| 3021 static void | |
| 3022 convert_eol_init_coding_stream (struct coding_stream *str) | |
| 3023 { | |
| 3024 struct convert_eol_coding_stream *data = | |
| 3025 CODING_STREAM_TYPE_DATA (str, convert_eol); | |
| 3026 data->actual = XCODING_SYSTEM_CONVERT_EOL_SUBTYPE (str->codesys); | |
| 3027 } | |
| 3028 | |
| 3029 static Bytecount | |
| 867 | 3030 convert_eol_convert (struct coding_stream *str, const Ibyte *src, |
| 771 | 3031 unsigned_char_dynarr *dst, Bytecount n) |
| 3032 { | |
| 3033 if (str->direction == CODING_DECODE) | |
| 3034 { | |
| 3035 struct convert_eol_coding_stream *data = | |
| 3036 CODING_STREAM_TYPE_DATA (str, convert_eol); | |
| 3037 | |
| 3038 if (data->actual == EOL_AUTODETECT) | |
| 3039 { | |
| 3040 Bytecount n2 = n; | |
| 867 | 3041 const Ibyte *src2 = src; |
| 771 | 3042 |
| 3043 for (; n2; n2--) | |
| 3044 { | |
| 867 | 3045 Ibyte c = *src2++; |
| 771 | 3046 if (c == '\n') |
| 3047 { | |
| 3048 data->actual = EOL_LF; | |
| 3049 break; | |
| 3050 } | |
| 3051 else if (c == '\r') | |
| 3052 { | |
| 3053 if (n2 == 1) | |
| 3054 { | |
| 3055 /* If we're seeing a '\r' at the end of the data, then | |
| 3056 reject the '\r' right now so it doesn't become an | |
| 3057 issue in the code below -- unless we're at the end of | |
| 3058 the stream, in which case we can't do that (because | |
| 3059 then the '\r' will never get written out), and in any | |
| 3060 case we should be recognizing it at EOL_CR format. */ | |
| 3061 if (str->eof) | |
| 3062 data->actual = EOL_CR; | |
| 3063 else | |
| 3064 n--; | |
| 3065 break; | |
| 3066 } | |
| 3067 else if (*src2 == '\n') | |
| 3068 data->actual = EOL_CRLF; | |
| 3069 else | |
| 3070 data->actual = EOL_CR; | |
| 3071 break; | |
| 3072 } | |
| 3073 } | |
| 3074 } | |
| 3075 | |
| 3076 /* str->eof is set, the caller reached EOF on the other end and has | |
| 3077 no new data to give us. The only data we get is the data we | |
| 3078 rejected from last time. */ | |
| 3079 if (data->actual == EOL_LF || data->actual == EOL_AUTODETECT || | |
| 3080 (str->eof)) | |
| 3081 Dynarr_add_many (dst, src, n); | |
| 3082 else | |
| 3083 { | |
| 867 | 3084 const Ibyte *end = src + n; |
| 771 | 3085 while (1) |
| 3086 { | |
| 3087 /* Find the next section with no \r and add it. */ | |
| 867 | 3088 const Ibyte *runstart = src; |
| 3089 src = (Ibyte *) memchr (src, '\r', end - src); | |
| 771 | 3090 if (!src) |
| 3091 src = end; | |
| 3092 Dynarr_add_many (dst, runstart, src - runstart); | |
| 3093 /* Stop if at end ... */ | |
| 3094 if (src == end) | |
| 3095 break; | |
| 3096 /* ... else, translate as necessary. */ | |
| 3097 src++; | |
| 3098 if (data->actual == EOL_CR) | |
| 3099 Dynarr_add (dst, '\n'); | |
| 3100 /* We need to be careful here with CRLF. If we see a CR at the | |
| 3101 end of the data, we don't know if it's part of a CRLF, so we | |
| 3102 reject it. Otherwise: If it's part of a CRLF, eat it and | |
| 3103 loop; the following LF gets added next time around. If it's | |
| 3104 not part of a CRLF, add the CR and loop. The following | |
| 3105 character will be processed in the next loop iteration. This | |
| 3106 correctly handles a sequence like CR+CR+LF. */ | |
| 3107 else if (src == end) | |
| 3108 return n - 1; /* reject the CR at the end; we'll get it again | |
| 3109 next time the convert method is called */ | |
| 3110 else if (*src != '\n') | |
| 3111 Dynarr_add (dst, '\r'); | |
| 3112 } | |
| 3113 } | |
| 3114 | |
| 3115 return n; | |
| 3116 } | |
| 3117 else | |
| 3118 { | |
| 3119 enum eol_type subtype = | |
| 3120 XCODING_SYSTEM_CONVERT_EOL_SUBTYPE (str->codesys); | |
| 867 | 3121 const Ibyte *end = src + n; |
| 771 | 3122 |
| 3123 /* We try to be relatively efficient here. */ | |
| 3124 if (subtype == EOL_LF) | |
| 3125 Dynarr_add_many (dst, src, n); | |
| 3126 else | |
| 3127 { | |
| 3128 while (1) | |
| 3129 { | |
| 3130 /* Find the next section with no \n and add it. */ | |
| 867 | 3131 const Ibyte *runstart = src; |
| 3132 src = (Ibyte *) memchr (src, '\n', end - src); | |
| 771 | 3133 if (!src) |
| 3134 src = end; | |
| 3135 Dynarr_add_many (dst, runstart, src - runstart); | |
| 3136 /* Stop if at end ... */ | |
| 3137 if (src == end) | |
| 3138 break; | |
| 3139 /* ... else, skip over \n and add its translation. */ | |
| 3140 src++; | |
| 3141 Dynarr_add (dst, '\r'); | |
| 3142 if (subtype == EOL_CRLF) | |
| 3143 Dynarr_add (dst, '\n'); | |
| 3144 } | |
| 3145 } | |
| 3146 | |
| 3147 return n; | |
| 3148 } | |
| 3149 } | |
| 3150 | |
| 3151 static Lisp_Object | |
| 3152 convert_eol_canonicalize_after_coding (struct coding_stream *str) | |
| 3153 { | |
| 3154 struct convert_eol_coding_stream *data = | |
| 3155 CODING_STREAM_TYPE_DATA (str, convert_eol); | |
| 3156 | |
| 3157 if (str->direction == CODING_ENCODE) | |
| 3158 return str->codesys; | |
| 3159 | |
| 3160 switch (data->actual) | |
| 3161 { | |
| 3162 case EOL_LF: return Fget_coding_system (Qconvert_eol_lf); | |
| 3163 case EOL_CRLF: return Fget_coding_system (Qconvert_eol_crlf); | |
| 3164 case EOL_CR: return Fget_coding_system (Qconvert_eol_cr); | |
| 3165 case EOL_AUTODETECT: return str->codesys; | |
| 2500 | 3166 default: ABORT (); return Qnil; |
| 771 | 3167 } |
| 3168 } | |
| 3169 | |
| 3170 | |
| 3171 /************************************************************************/ | |
| 3172 /* Undecided methods */ | |
| 3173 /************************************************************************/ | |
| 3174 | |
| 3175 /* Do autodetection. We can autodetect the EOL type only, the coding | |
| 3176 system only, or both. We only do autodetection when decoding; when | |
| 3177 encoding, we just pass the data through. | |
| 3178 | |
| 3179 When doing just EOL detection, a coding system can be specified; if so, | |
| 3180 we will decode this data through the coding system before doing EOL | |
| 3181 detection. The reason for specifying this is so that | |
| 3182 canonicalize-after-coding works: We will canonicalize the specified | |
| 3183 coding system into the appropriate EOL type. When doing both coding and | |
| 3184 EOL detection, we do similar canonicalization, and also catch situations | |
| 3185 where the EOL type is overspecified, i.e. the detected coding system | |
| 3186 specifies an EOL type, and either switch to the equivalent | |
| 3187 non-EOL-processing coding system (if possible), or terminate EOL | |
| 3188 detection and use the specified EOL type. This prevents data from being | |
| 3189 EOL-processed twice. | |
| 3190 */ | |
| 3191 | |
| 3192 struct undecided_coding_system | |
| 3193 { | |
| 3194 int do_eol, do_coding; | |
| 3195 Lisp_Object cs; | |
| 3196 }; | |
| 3197 | |
| 3198 struct undecided_coding_stream | |
| 3199 { | |
| 3200 Lisp_Object actual; | |
| 3201 /* Either 2 or 3 lstreams here; see undecided_convert */ | |
| 3202 struct chain_coding_stream c; | |
| 3203 | |
| 3204 struct detection_state *st; | |
| 3205 }; | |
| 3206 | |
| 1204 | 3207 static const struct memory_description undecided_coding_system_description[] = { |
| 3208 { XD_LISP_OBJECT, offsetof (struct undecided_coding_system, cs) }, | |
| 771 | 3209 { XD_END } |
| 3210 }; | |
| 3211 | |
| 1204 | 3212 static const struct memory_description undecided_coding_stream_description_1 [] = { |
| 3213 { XD_LISP_OBJECT, offsetof (struct undecided_coding_stream, actual) }, | |
| 2367 | 3214 { XD_BLOCK_ARRAY, offsetof (struct undecided_coding_stream, c), |
| 2551 | 3215 1, { &chain_coding_stream_description } }, |
| 1204 | 3216 { XD_END } |
| 3217 }; | |
| 3218 | |
| 3219 const struct sized_memory_description undecided_coding_stream_description = { | |
| 3220 sizeof (struct undecided_coding_stream), undecided_coding_stream_description_1 | |
| 3221 }; | |
| 3222 | |
| 3223 DEFINE_CODING_SYSTEM_TYPE_WITH_DATA (undecided); | |
| 3224 | |
| 771 | 3225 static void |
| 3226 undecided_init (Lisp_Object codesys) | |
| 3227 { | |
| 3228 struct undecided_coding_system *data = | |
| 3229 XCODING_SYSTEM_TYPE_DATA (codesys, undecided); | |
| 3230 | |
| 3231 data->cs = Qnil; | |
| 3232 } | |
| 3233 | |
| 3234 static void | |
| 3235 undecided_mark (Lisp_Object codesys) | |
| 3236 { | |
| 3237 struct undecided_coding_system *data = | |
| 3238 XCODING_SYSTEM_TYPE_DATA (codesys, undecided); | |
| 3239 | |
| 3240 mark_object (data->cs); | |
| 3241 } | |
| 3242 | |
| 3243 static void | |
| 3244 undecided_print (Lisp_Object cs, Lisp_Object printcharfun, int escapeflag) | |
| 3245 { | |
| 3246 struct undecided_coding_system *data = | |
| 3247 XCODING_SYSTEM_TYPE_DATA (cs, undecided); | |
| 3248 int need_space = 0; | |
| 3249 | |
|
4952
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Ben Wing <ben@xemacs.org>
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4846
diff
changeset
|
3250 write_ascstring (printcharfun, "("); |
| 771 | 3251 if (data->do_eol) |
| 3252 { | |
|
4952
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
3253 write_ascstring (printcharfun, "do-eol"); |
| 771 | 3254 need_space = 1; |
| 3255 } | |
| 3256 if (data->do_coding) | |
| 3257 { | |
| 3258 if (need_space) | |
|
4952
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Ben Wing <ben@xemacs.org>
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4846
diff
changeset
|
3259 write_ascstring (printcharfun, " "); |
|
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
3260 write_ascstring (printcharfun, "do-coding"); |
| 771 | 3261 need_space = 1; |
| 3262 } | |
| 3263 if (!NILP (data->cs)) | |
| 3264 { | |
| 3265 if (need_space) | |
|
4952
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
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4846
diff
changeset
|
3266 write_ascstring (printcharfun, " "); |
|
19a72041c5ed
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Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
3267 write_ascstring (printcharfun, "coding-system="); |
| 771 | 3268 print_coding_system_in_print_method (data->cs, printcharfun, escapeflag); |
| 3269 } | |
|
4952
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Ben Wing <ben@xemacs.org>
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4846
diff
changeset
|
3270 write_ascstring (printcharfun, ")"); |
| 771 | 3271 } |
| 3272 | |
| 3273 static void | |
| 3274 undecided_mark_coding_stream (struct coding_stream *str) | |
| 3275 { | |
| 1204 | 3276 mark_object (CODING_STREAM_TYPE_DATA (str, undecided)->actual); |
| 771 | 3277 chain_mark_coding_stream_1 (&CODING_STREAM_TYPE_DATA (str, undecided)->c); |
| 3278 } | |
| 3279 | |
| 3280 static int | |
| 3281 undecided_putprop (Lisp_Object codesys, Lisp_Object key, Lisp_Object value) | |
| 3282 { | |
| 3283 struct undecided_coding_system *data = | |
| 3284 XCODING_SYSTEM_TYPE_DATA (codesys, undecided); | |
| 3285 | |
| 3286 if (EQ (key, Qdo_eol)) | |
| 3287 data->do_eol = 1; | |
| 3288 else if (EQ (key, Qdo_coding)) | |
| 3289 data->do_coding = 1; | |
| 3290 else if (EQ (key, Qcoding_system)) | |
| 3291 data->cs = get_coding_system_for_text_file (value, 0); | |
| 3292 else | |
| 3293 return 0; | |
| 3294 return 1; | |
| 3295 } | |
| 3296 | |
| 3297 static Lisp_Object | |
| 3298 undecided_getprop (Lisp_Object codesys, Lisp_Object prop) | |
| 3299 { | |
| 3300 struct undecided_coding_system *data = | |
| 3301 XCODING_SYSTEM_TYPE_DATA (codesys, undecided); | |
| 3302 | |
| 3303 if (EQ (prop, Qdo_eol)) | |
| 3304 return data->do_eol ? Qt : Qnil; | |
| 3305 if (EQ (prop, Qdo_coding)) | |
| 3306 return data->do_coding ? Qt : Qnil; | |
| 3307 if (EQ (prop, Qcoding_system)) | |
| 3308 return data->cs; | |
| 3309 return Qunbound; | |
| 3310 } | |
| 3311 | |
| 3312 static struct detection_state * | |
| 3313 allocate_detection_state (void) | |
| 3314 { | |
| 3315 int i; | |
| 3316 Bytecount size = MAX_ALIGN_SIZE (sizeof (struct detection_state)); | |
| 3317 struct detection_state *block; | |
| 3318 | |
| 3319 for (i = 0; i < coding_detector_count; i++) | |
| 3320 size += MAX_ALIGN_SIZE (Dynarr_at (all_coding_detectors, i).data_size); | |
| 3321 | |
| 3322 block = (struct detection_state *) xmalloc_and_zero (size); | |
| 3323 | |
| 3324 size = MAX_ALIGN_SIZE (sizeof (struct detection_state)); | |
| 3325 for (i = 0; i < coding_detector_count; i++) | |
| 3326 { | |
| 3327 block->data_offset[i] = size; | |
| 3328 size += MAX_ALIGN_SIZE (Dynarr_at (all_coding_detectors, i).data_size); | |
| 3329 } | |
| 3330 | |
| 3331 return block; | |
| 3332 } | |
| 3333 | |
| 3334 static void | |
| 3335 free_detection_state (struct detection_state *st) | |
| 3336 { | |
| 3337 int i; | |
| 3338 | |
| 3339 for (i = 0; i < coding_detector_count; i++) | |
| 3340 { | |
| 3341 if (Dynarr_at (all_coding_detectors, i).finalize_detection_state_method) | |
| 3342 Dynarr_at (all_coding_detectors, i).finalize_detection_state_method | |
| 3343 (st); | |
| 3344 } | |
| 3345 | |
|
4976
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Ben Wing <ben@xemacs.org>
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4967
diff
changeset
|
3346 xfree (st); |
| 771 | 3347 } |
| 3348 | |
| 3349 static int | |
| 3350 coding_category_symbol_to_id (Lisp_Object symbol) | |
| 428 | 3351 { |
| 3352 int i; | |
| 3353 | |
| 3354 CHECK_SYMBOL (symbol); | |
| 771 | 3355 for (i = 0; i < coding_detector_count; i++) |
| 3356 { | |
| 3357 detector_category_dynarr *cats = | |
| 3358 Dynarr_at (all_coding_detectors, i).cats; | |
| 3359 int j; | |
| 3360 | |
| 3361 for (j = 0; j < Dynarr_length (cats); j++) | |
| 3362 if (EQ (Dynarr_at (cats, j).sym, symbol)) | |
| 3363 return Dynarr_at (cats, j).id; | |
| 3364 } | |
| 3365 | |
| 563 | 3366 invalid_constant ("Unrecognized coding category", symbol); |
| 1204 | 3367 RETURN_NOT_REACHED (0); |
| 428 | 3368 } |
| 3369 | |
| 771 | 3370 static Lisp_Object |
| 3371 coding_category_id_to_symbol (int id) | |
| 428 | 3372 { |
| 3373 int i; | |
| 771 | 3374 |
| 3375 for (i = 0; i < coding_detector_count; i++) | |
| 3376 { | |
| 3377 detector_category_dynarr *cats = | |
| 3378 Dynarr_at (all_coding_detectors, i).cats; | |
| 3379 int j; | |
| 3380 | |
| 3381 for (j = 0; j < Dynarr_length (cats); j++) | |
| 3382 if (id == Dynarr_at (cats, j).id) | |
| 3383 return Dynarr_at (cats, j).sym; | |
| 3384 } | |
| 3385 | |
| 2500 | 3386 ABORT (); |
| 771 | 3387 return Qnil; /* (usually) not reached */ |
| 428 | 3388 } |
| 3389 | |
| 771 | 3390 static Lisp_Object |
| 3391 detection_result_number_to_symbol (enum detection_result result) | |
| 428 | 3392 { |
| 1494 | 3393 /* let compiler warn if not all enumerators are handled */ |
| 3394 switch (result) { | |
| 3395 #define FROB(sym, num) case num: return (sym) | |
| 771 | 3396 FROB (Qnear_certainty, DET_NEAR_CERTAINTY); |
| 3397 FROB (Qquite_probable, DET_QUITE_PROBABLE); | |
| 3398 FROB (Qsomewhat_likely, DET_SOMEWHAT_LIKELY); | |
| 1494 | 3399 FROB (Qslightly_likely, DET_SLIGHTLY_LIKELY); |
| 771 | 3400 FROB (Qas_likely_as_unlikely, DET_AS_LIKELY_AS_UNLIKELY); |
| 3401 FROB (Qsomewhat_unlikely, DET_SOMEWHAT_UNLIKELY); | |
| 3402 FROB (Qquite_improbable, DET_QUITE_IMPROBABLE); | |
| 3403 FROB (Qnearly_impossible, DET_NEARLY_IMPOSSIBLE); | |
| 3404 #undef FROB | |
| 1494 | 3405 } |
| 771 | 3406 |
| 2500 | 3407 ABORT (); |
| 771 | 3408 return Qnil; /* (usually) not reached */ |
| 3409 } | |
| 3410 | |
| 778 | 3411 #if 0 /* not used */ |
| 771 | 3412 static enum detection_result |
| 3413 detection_result_symbol_to_number (Lisp_Object symbol) | |
| 3414 { | |
| 1494 | 3415 /* using switch here would be bad style, and doesn't help */ |
| 771 | 3416 #define FROB(sym, num) if (EQ (symbol, sym)) return (num) |
| 3417 FROB (Qnear_certainty, DET_NEAR_CERTAINTY); | |
| 3418 FROB (Qquite_probable, DET_QUITE_PROBABLE); | |
| 3419 FROB (Qsomewhat_likely, DET_SOMEWHAT_LIKELY); | |
| 1494 | 3420 FROB (Qslightly_likely, DET_SLIGHTLY_LIKELY); |
| 771 | 3421 FROB (Qas_likely_as_unlikely, DET_AS_LIKELY_AS_UNLIKELY); |
| 3422 FROB (Qsomewhat_unlikely, DET_SOMEWHAT_UNLIKELY); | |
| 3423 FROB (Qquite_improbable, DET_QUITE_IMPROBABLE); | |
| 3424 FROB (Qnearly_impossible, DET_NEARLY_IMPOSSIBLE); | |
| 3425 #undef FROB | |
| 3426 | |
| 3427 invalid_constant ("Unrecognized detection result", symbol); | |
| 3428 return ((enum detection_result) 0); /* not reached */ | |
| 3429 } | |
| 778 | 3430 #endif /* 0 */ |
| 771 | 3431 |
| 3432 /* Set all detection results for a given detector to a specified value. */ | |
| 3433 void | |
| 3434 set_detection_results (struct detection_state *st, int detector, int given) | |
| 3435 { | |
| 3436 detector_category_dynarr *cats = | |
| 3437 Dynarr_at (all_coding_detectors, detector).cats; | |
| 3438 int i; | |
| 3439 | |
| 3440 for (i = 0; i < Dynarr_length (cats); i++) | |
| 3441 st->categories[Dynarr_at (cats, i).id] = given; | |
| 3442 } | |
| 428 | 3443 |
| 3444 static int | |
| 3445 acceptable_control_char_p (int c) | |
| 3446 { | |
| 3447 switch (c) | |
| 3448 { | |
| 3449 /* Allow and ignore control characters that you might | |
| 3450 reasonably see in a text file */ | |
| 3451 case '\r': | |
| 3452 case '\n': | |
| 3453 case '\t': | |
| 3454 case 7: /* bell */ | |
| 3455 case 8: /* backspace */ | |
| 3456 case 11: /* vertical tab */ | |
| 3457 case 12: /* form feed */ | |
| 3458 case 26: /* MS-DOS C-z junk */ | |
| 3459 case 31: /* '^_' -- for info */ | |
| 3460 return 1; | |
| 3461 default: | |
| 3462 return 0; | |
| 3463 } | |
| 3464 } | |
| 3465 | |
| 771 | 3466 #ifdef DEBUG_XEMACS |
| 3467 | |
| 3468 static UExtbyte | |
| 3469 hex_digit_to_char (int digit) | |
| 428 | 3470 { |
| 771 | 3471 if (digit < 10) |
| 3472 return digit + '0'; | |
| 3473 else | |
| 3474 return digit - 10 + 'A'; | |
| 428 | 3475 } |
| 3476 | |
| 771 | 3477 static void |
| 3478 output_bytes_in_ascii_and_hex (const UExtbyte *src, Bytecount n) | |
| 428 | 3479 { |
| 3425 | 3480 Extbyte *ascii = alloca_array (Extbyte, n + 1); |
| 3481 Extbyte *hex = alloca_array (Extbyte, 3 * n + 1); | |
| 771 | 3482 int i; |
| 3413 | 3483 DECLARE_EISTRING (eistr_ascii); |
| 3484 DECLARE_EISTRING (eistr_hex); | |
| 771 | 3485 |
| 3486 for (i = 0; i < n; i++) | |
| 428 | 3487 { |
| 3425 | 3488 Extbyte c = src[i]; |
| 771 | 3489 if (c < 0x20) |
| 3490 ascii[i] = '.'; | |
| 428 | 3491 else |
| 771 | 3492 ascii[i] = c; |
| 3493 hex[3 * i] = hex_digit_to_char (c >> 4); | |
| 3494 hex[3 * i + 1] = hex_digit_to_char (c & 0xF); | |
| 3495 hex[3 * i + 2] = ' '; | |
| 428 | 3496 } |
| 771 | 3497 ascii[i] = '\0'; |
| 3498 hex[3 * i - 1] = '\0'; | |
| 3413 | 3499 |
| 3500 eicpy_ext(eistr_hex, hex, Qbinary); | |
| 3501 eicpy_ext(eistr_ascii, ascii, Qbinary); | |
| 3502 | |
| 3425 | 3503 stderr_out ("%s %s", eidata(eistr_ascii), eidata(eistr_hex)); |
| 428 | 3504 } |
| 3505 | |
| 771 | 3506 #endif /* DEBUG_XEMACS */ |
| 3507 | |
| 3508 /* Attempt to determine the encoding of the given text. Before calling | |
| 3509 this function for the first time, you must zero out the detection state. | |
| 428 | 3510 |
| 3511 Returns: | |
| 3512 | |
| 771 | 3513 0 == keep going |
| 3514 1 == stop | |
| 428 | 3515 */ |
| 3516 | |
| 3517 static int | |
| 771 | 3518 detect_coding_type (struct detection_state *st, const UExtbyte *src, |
| 3519 Bytecount n) | |
| 428 | 3520 { |
| 771 | 3521 Bytecount n2 = n; |
| 3522 const UExtbyte *src2 = src; | |
| 3523 int i; | |
| 3524 | |
| 3525 #ifdef DEBUG_XEMACS | |
| 3526 if (!NILP (Vdebug_coding_detection)) | |
| 3527 { | |
| 3528 int bytes = min (16, n); | |
| 3529 stderr_out ("detect_coding_type: processing %ld bytes\n", n); | |
| 3530 stderr_out ("First %d: ", bytes); | |
| 3531 output_bytes_in_ascii_and_hex (src, bytes); | |
| 3532 stderr_out ("\nLast %d: ", bytes); | |
| 3533 output_bytes_in_ascii_and_hex (src + n - bytes, bytes); | |
| 3534 stderr_out ("\n"); | |
| 3535 } | |
| 3536 #endif /* DEBUG_XEMACS */ | |
| 428 | 3537 if (!st->seen_non_ascii) |
| 3538 { | |
| 771 | 3539 for (; n2; n2--, src2++) |
| 428 | 3540 { |
| 771 | 3541 UExtbyte c = *src2; |
| 428 | 3542 if ((c < 0x20 && !acceptable_control_char_p (c)) || c >= 0x80) |
| 3543 { | |
| 3544 st->seen_non_ascii = 1; | |
| 3545 break; | |
| 3546 } | |
| 3547 } | |
| 3548 } | |
| 3549 | |
| 771 | 3550 for (i = 0; i < coding_detector_count; i++) |
| 3551 Dynarr_at (all_coding_detectors, i).detect_method (st, src, n); | |
| 3552 | |
| 3553 st->bytes_seen += n; | |
| 3554 | |
| 3555 #ifdef DEBUG_XEMACS | |
| 3556 if (!NILP (Vdebug_coding_detection)) | |
| 3557 { | |
| 3558 stderr_out ("seen_non_ascii: %d\n", st->seen_non_ascii); | |
| 1494 | 3559 if (coding_detector_category_count <= 0) |
| 3560 stderr_out ("found %d detector categories\n", | |
| 3561 coding_detector_category_count); | |
| 771 | 3562 for (i = 0; i < coding_detector_category_count; i++) |
| 3563 stderr_out_lisp | |
| 3564 ("%s: %s\n", | |
| 3565 2, | |
| 3566 coding_category_id_to_symbol (i), | |
| 3567 detection_result_number_to_symbol ((enum detection_result) | |
| 3568 st->categories[i])); | |
| 3569 } | |
| 3570 #endif /* DEBUG_XEMACS */ | |
| 3571 | |
| 3572 { | |
| 3573 int not_unlikely = 0; | |
| 3574 int retval; | |
| 3575 | |
| 3576 for (i = 0; i < coding_detector_category_count; i++) | |
| 3577 if (st->categories[i] >= 0) | |
| 3578 not_unlikely++; | |
| 3579 | |
| 3580 retval = (not_unlikely <= 1 | |
| 3581 #if 0 /* this is bogus */ | |
| 3582 || st->bytes_seen >= MAX_BYTES_PROCESSED_FOR_DETECTION | |
| 428 | 3583 #endif |
| 771 | 3584 ); |
| 3585 | |
| 3586 #ifdef DEBUG_XEMACS | |
| 3587 if (!NILP (Vdebug_coding_detection)) | |
| 3588 stderr_out ("detect_coding_type: returning %d (%s)\n", | |
| 3589 retval, retval ? "stop" : "keep going"); | |
| 3590 #endif /* DEBUG_XEMACS */ | |
| 3591 | |
| 3592 return retval; | |
| 428 | 3593 } |
| 3594 } | |
| 3595 | |
| 3596 static Lisp_Object | |
| 771 | 3597 detected_coding_system (struct detection_state *st) |
| 428 | 3598 { |
| 771 | 3599 int i; |
| 3600 int even = 1; | |
| 3601 | |
| 3602 if (st->seen_non_ascii) | |
| 3603 { | |
| 3604 for (i = 0; i < coding_detector_category_count; i++) | |
| 3605 if (st->categories[i] != DET_AS_LIKELY_AS_UNLIKELY) | |
| 3606 { | |
| 3607 even = 0; | |
| 3608 break; | |
| 3609 } | |
| 3610 } | |
| 3611 | |
| 3612 /* #### Here we are ignoring the results of detection when it's all | |
| 3613 ASCII. This is obviously a bad thing. But we need to fix up the | |
| 3614 existing detection methods somewhat before we can switch. */ | |
| 3615 if (even) | |
| 428 | 3616 { |
| 3617 /* If the file was entirely or basically ASCII, use the | |
| 3618 default value of `buffer-file-coding-system'. */ | |
| 3619 Lisp_Object retval = | |
| 3620 XBUFFER (Vbuffer_defaults)->buffer_file_coding_system; | |
| 3621 if (!NILP (retval)) | |
| 3622 { | |
| 771 | 3623 retval = find_coding_system_for_text_file (retval, 0); |
| 428 | 3624 if (NILP (retval)) |
| 3625 { | |
| 3626 warn_when_safe | |
| 3627 (Qbad_variable, Qwarning, | |
| 3628 "Invalid `default-buffer-file-coding-system', set to nil"); | |
| 3629 XBUFFER (Vbuffer_defaults)->buffer_file_coding_system = Qnil; | |
| 3630 } | |
| 3631 } | |
| 3632 if (NILP (retval)) | |
| 4100 | 3633 retval = Fget_coding_system (Qbinary); |
| 428 | 3634 return retval; |
| 3635 } | |
| 3636 else | |
| 3637 { | |
| 771 | 3638 int likelihood; |
| 3639 Lisp_Object retval = Qnil; | |
| 3640 | |
| 3641 /* Look through the coding categories first by likelihood and then by | |
| 3642 priority and find the first one that is allowed. */ | |
| 3643 | |
| 3644 for (likelihood = DET_HIGHEST; likelihood >= DET_LOWEST; likelihood--) | |
| 428 | 3645 { |
| 771 | 3646 for (i = 0; i < coding_detector_category_count; i++) |
| 3647 { | |
| 3648 int cat = coding_category_by_priority[i]; | |
| 3649 if (st->categories[cat] == likelihood && | |
| 3650 !NILP (coding_category_system[cat])) | |
| 3651 { | |
| 3652 retval = (get_coding_system_for_text_file | |
| 3653 (coding_category_system[cat], 0)); | |
| 3654 if (likelihood < DET_AS_LIKELY_AS_UNLIKELY) | |
| 3655 warn_when_safe_lispobj | |
| 3656 (intern ("detection"), | |
| 793 | 3657 Qwarning, |
| 771 | 3658 emacs_sprintf_string_lisp |
| 3659 ( | |
| 3660 "Detected coding %s is unlikely to be correct (likelihood == `%s')", | |
| 3661 Qnil, 2, XCODING_SYSTEM_NAME (retval), | |
| 3662 detection_result_number_to_symbol | |
| 3663 ((enum detection_result) likelihood))); | |
| 3664 return retval; | |
| 3665 } | |
| 3666 } | |
| 428 | 3667 } |
| 771 | 3668 |
| 3669 return Fget_coding_system (Qraw_text); | |
| 428 | 3670 } |
| 3671 } | |
| 3672 | |
| 1347 | 3673 /* Look for a coding system in the string (skipping over leading |
| 3674 blanks). If found, return it, otherwise nil. */ | |
| 3675 | |
| 3676 static Lisp_Object | |
| 2531 | 3677 snarf_coding_system (const UExtbyte *p, Bytecount len) |
| 1347 | 3678 { |
| 3679 Bytecount n; | |
| 2531 | 3680 UExtbyte *name; |
| 1347 | 3681 |
| 3682 while (*p == ' ' || *p == '\t') p++, len--; | |
| 3683 len = min (len, 1000); | |
| 3684 name = alloca_ibytes (len + 1); | |
| 3685 memcpy (name, p, len); | |
| 3686 name[len] = '\0'; | |
| 3687 | |
| 3688 /* Get coding system name */ | |
| 3689 /* Characters valid in a MIME charset name (rfc 1521), | |
| 3690 and in a Lisp symbol name. */ | |
| 3691 n = qxestrspn (name, | |
| 3692 "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
| 3693 "abcdefghijklmnopqrstuvwxyz" | |
| 3694 "0123456789" | |
| 3695 "!$%&*+-.^_{|}~"); | |
| 3696 if (n > 0) | |
| 3697 { | |
| 3698 name[n] = '\0'; | |
|
4953
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Ben Wing <ben@xemacs.org>
parents:
4952
diff
changeset
|
3699 /* This call to intern_istring() is OK because we already verified that |
| 2531 | 3700 there are only ASCII characters in the string */ |
|
4953
304aebb79cd3
function renamings to track names of char typedefs
Ben Wing <ben@xemacs.org>
parents:
4952
diff
changeset
|
3701 return find_coding_system_for_text_file (intern_istring ((Ibyte *) name), 0); |
| 1347 | 3702 } |
| 3703 | |
| 3704 return Qnil; | |
| 3705 } | |
| 3706 | |
| 428 | 3707 /* Given a seekable read stream and potential coding system and EOL type |
| 3708 as specified, do any autodetection that is called for. If the | |
| 3709 coding system and/or EOL type are not `autodetect', they will be left | |
| 3710 alone; but this function will never return an autodetect coding system | |
| 3711 or EOL type. | |
| 3712 | |
| 3713 This function does not automatically fetch subsidiary coding systems; | |
| 3714 that should be unnecessary with the explicit eol-type argument. */ | |
| 3715 | |
| 3716 #define LENGTH(string_constant) (sizeof (string_constant) - 1) | |
| 3717 | |
| 771 | 3718 static Lisp_Object |
| 3719 unwind_free_detection_state (Lisp_Object opaque) | |
| 3720 { | |
| 3721 struct detection_state *st = | |
| 3722 (struct detection_state *) get_opaque_ptr (opaque); | |
| 3723 free_detection_state (st); | |
| 3724 free_opaque_ptr (opaque); | |
| 3725 return Qnil; | |
| 3726 } | |
| 3727 | |
| 1347 | 3728 /* #### This duplicates code in `find-coding-system-magic-cookie-in-file' |
| 3729 in files.el. Look into combining them. */ | |
| 3730 | |
| 771 | 3731 static Lisp_Object |
| 3732 look_for_coding_system_magic_cookie (const UExtbyte *data, Bytecount len) | |
| 428 | 3733 { |
| 771 | 3734 const UExtbyte *p; |
| 3735 const UExtbyte *scan_end; | |
| 2531 | 3736 Bytecount cookie_len; |
| 771 | 3737 |
| 3738 /* Look for initial "-*-"; mode line prefix */ | |
| 3739 for (p = data, | |
| 3740 scan_end = data + len - LENGTH ("-*-coding:?-*-"); | |
| 3741 p <= scan_end | |
| 3742 && *p != '\n' | |
| 3743 && *p != '\r'; | |
| 3744 p++) | |
| 3745 if (*p == '-' && *(p+1) == '*' && *(p+2) == '-') | |
| 3746 { | |
| 3747 const UExtbyte *local_vars_beg = p + 3; | |
| 3748 /* Look for final "-*-"; mode line suffix */ | |
| 3749 for (p = local_vars_beg, | |
| 3750 scan_end = data + len - LENGTH ("-*-"); | |
| 3751 p <= scan_end | |
| 428 | 3752 && *p != '\n' |
| 3753 && *p != '\r'; | |
| 771 | 3754 p++) |
| 3755 if (*p == '-' && *(p+1) == '*' && *(p+2) == '-') | |
| 3756 { | |
| 3757 const UExtbyte *suffix = p; | |
| 3758 /* Look for "coding:" */ | |
| 3759 for (p = local_vars_beg, | |
| 3760 scan_end = suffix - LENGTH ("coding:?"); | |
| 3761 p <= scan_end; | |
| 3762 p++) | |
| 3763 if (memcmp ("coding:", p, LENGTH ("coding:")) == 0 | |
| 3764 && (p == local_vars_beg | |
| 3765 || (*(p-1) == ' ' || | |
| 3766 *(p-1) == '\t' || | |
| 3767 *(p-1) == ';'))) | |
| 3768 { | |
| 3769 p += LENGTH ("coding:"); | |
| 1347 | 3770 return snarf_coding_system (p, suffix - p); |
| 771 | 3771 break; |
| 3772 } | |
| 3773 break; | |
| 3774 } | |
| 3775 break; | |
| 3776 } | |
| 3777 | |
| 2531 | 3778 /* Look for ;;;###coding system */ |
| 3779 | |
| 3780 cookie_len = LENGTH (";;;###coding system: "); | |
| 3781 | |
| 3782 for (p = data, | |
| 3783 scan_end = data + len - cookie_len; | |
| 3784 p <= scan_end; | |
| 3785 p++) | |
| 1347 | 3786 { |
| 2531 | 3787 if (*p == ';' && !memcmp (p, ";;;###coding system: ", cookie_len)) |
| 3788 { | |
| 3789 const UExtbyte *suffix; | |
| 3790 | |
| 3791 p += cookie_len; | |
| 3792 suffix = p; | |
| 3793 while (suffix < scan_end && !isspace (*suffix)) | |
| 3794 suffix++; | |
| 3795 return snarf_coding_system (p, suffix - p); | |
| 3796 } | |
| 1347 | 3797 } |
| 3798 | |
| 3799 return Qnil; | |
| 771 | 3800 } |
| 3801 | |
| 3802 static Lisp_Object | |
| 3803 determine_real_coding_system (Lstream *stream) | |
| 3804 { | |
| 3805 struct detection_state *st = allocate_detection_state (); | |
| 3806 int depth = record_unwind_protect (unwind_free_detection_state, | |
| 3807 make_opaque_ptr (st)); | |
| 3808 UExtbyte buf[4096]; | |
| 3809 Bytecount nread = Lstream_read (stream, buf, sizeof (buf)); | |
| 3810 Lisp_Object coding_system = look_for_coding_system_magic_cookie (buf, nread); | |
| 3811 | |
| 3812 if (NILP (coding_system)) | |
| 3813 { | |
| 3814 while (1) | |
| 3815 { | |
| 3816 if (detect_coding_type (st, buf, nread)) | |
| 428 | 3817 break; |
| 771 | 3818 nread = Lstream_read (stream, buf, sizeof (buf)); |
| 3819 if (nread == 0) | |
| 3820 break; | |
| 428 | 3821 } |
| 771 | 3822 |
| 3823 coding_system = detected_coding_system (st); | |
| 428 | 3824 } |
| 3825 | |
| 3826 Lstream_rewind (stream); | |
| 771 | 3827 |
| 3828 unbind_to (depth); | |
| 3829 return coding_system; | |
| 3830 } | |
| 3831 | |
| 3832 static void | |
| 3833 undecided_init_coding_stream (struct coding_stream *str) | |
| 3834 { | |
| 3835 struct undecided_coding_stream *data = | |
| 3836 CODING_STREAM_TYPE_DATA (str, undecided); | |
| 3837 struct undecided_coding_system *csdata = | |
| 3838 XCODING_SYSTEM_TYPE_DATA (str->codesys, undecided); | |
| 3839 | |
| 3840 data->actual = Qnil; | |
| 3841 | |
| 3842 if (str->direction == CODING_DECODE) | |
| 3843 { | |
| 3844 Lstream *lst = str->other_end; | |
| 3845 | |
| 3846 if ((lst->flags & LSTREAM_FL_READ) && | |
| 3847 Lstream_seekable_p (lst) && | |
| 3848 csdata->do_coding) | |
| 3849 /* We can determine the coding system now. */ | |
| 3850 data->actual = determine_real_coding_system (lst); | |
| 3851 } | |
| 1494 | 3852 |
| 3853 #ifdef DEBUG_XEMACS | |
| 3854 if (!NILP (Vdebug_coding_detection)) | |
| 3855 stderr_out_lisp ("detected coding system: %s\n", 1, data->actual); | |
| 3856 #endif /* DEBUG_XEMACS */ | |
| 771 | 3857 } |
| 3858 | |
| 3859 static void | |
| 3860 undecided_rewind_coding_stream (struct coding_stream *str) | |
| 3861 { | |
| 3862 chain_rewind_coding_stream_1 (&CODING_STREAM_TYPE_DATA (str, undecided)->c); | |
| 3863 } | |
| 3864 | |
| 3865 static void | |
| 3866 undecided_finalize_coding_stream (struct coding_stream *str) | |
| 3867 { | |
| 3868 struct undecided_coding_stream *data = | |
| 3869 CODING_STREAM_TYPE_DATA (str, undecided); | |
| 3870 | |
| 3871 chain_finalize_coding_stream_1 | |
| 3872 (&CODING_STREAM_TYPE_DATA (str, undecided)->c); | |
| 3873 if (data->st) | |
| 3874 free_detection_state (data->st); | |
| 3875 } | |
| 3876 | |
| 3877 static Lisp_Object | |
| 3878 undecided_canonicalize (Lisp_Object codesys) | |
| 3879 { | |
| 3880 struct undecided_coding_system *csdata = | |
| 3881 XCODING_SYSTEM_TYPE_DATA (codesys, undecided); | |
| 3882 if (!csdata->do_eol && !csdata->do_coding) | |
| 3883 return NILP (csdata->cs) ? Fget_coding_system (Qbinary) : csdata->cs; | |
| 3884 if (csdata->do_eol && !csdata->do_coding && NILP (csdata->cs)) | |
| 3885 return Fget_coding_system (Qconvert_eol_autodetect); | |
| 3886 return codesys; | |
| 3887 } | |
| 3888 | |
| 3889 static Bytecount | |
| 3890 undecided_convert (struct coding_stream *str, const UExtbyte *src, | |
| 3891 unsigned_char_dynarr *dst, Bytecount n) | |
| 3892 { | |
| 3893 int first_time = 0; | |
| 3894 | |
| 3895 if (str->direction == CODING_DECODE) | |
| 3896 { | |
| 3897 /* At this point, we have only the following possibilities: | |
| 3898 | |
| 3899 do_eol && do_coding | |
| 3900 do_coding only | |
| 3901 do_eol only and a coding system was specified | |
| 3902 | |
| 3903 Other possibilities are removed during undecided_canonicalize. | |
| 3904 | |
| 3905 Therefore, our substreams are either | |
| 3906 | |
| 3907 lstream_coding -> lstream_dynarr, or | |
| 3908 lstream_coding -> lstream_eol -> lstream_dynarr. | |
| 3909 */ | |
| 3910 struct undecided_coding_system *csdata = | |
| 3911 XCODING_SYSTEM_TYPE_DATA (str->codesys, undecided); | |
| 3912 struct undecided_coding_stream *data = | |
| 3913 CODING_STREAM_TYPE_DATA (str, undecided); | |
| 3914 | |
| 3915 if (str->eof) | |
| 3916 { | |
| 3917 /* Each will close the next. We need to close now because more | |
| 3918 data may be generated. */ | |
| 3919 if (data->c.initted) | |
| 3920 Lstream_close (XLSTREAM (data->c.lstreams[0])); | |
| 3921 return n; | |
| 3922 } | |
| 3923 | |
| 3924 if (!data->c.initted) | |
| 3925 { | |
| 3926 data->c.lstream_count = csdata->do_eol ? 3 : 2; | |
| 3927 data->c.lstreams = xnew_array (Lisp_Object, data->c.lstream_count); | |
| 3928 | |
| 3929 data->c.lstreams[data->c.lstream_count - 1] = | |
| 3930 make_dynarr_output_stream (dst); | |
| 3931 Lstream_set_buffering | |
| 3932 (XLSTREAM (data->c.lstreams[data->c.lstream_count - 1]), | |
| 3933 LSTREAM_UNBUFFERED, 0); | |
| 3934 if (csdata->do_eol) | |
| 3935 { | |
| 3936 data->c.lstreams[1] = | |
| 3937 make_coding_output_stream | |
| 3938 (XLSTREAM (data->c.lstreams[data->c.lstream_count - 1]), | |
| 3939 Fget_coding_system (Qconvert_eol_autodetect), | |
| 800 | 3940 CODING_DECODE, 0); |
| 771 | 3941 Lstream_set_buffering |
| 3942 (XLSTREAM (data->c.lstreams[1]), | |
| 3943 LSTREAM_UNBUFFERED, 0); | |
| 3944 } | |
| 3945 | |
| 3946 data->c.lstreams[0] = | |
| 3947 make_coding_output_stream | |
| 3948 (XLSTREAM (data->c.lstreams[1]), | |
| 3949 /* Substitute binary if we need to detect the encoding */ | |
| 3950 csdata->do_coding ? Qbinary : csdata->cs, | |
| 800 | 3951 CODING_DECODE, 0); |
| 771 | 3952 Lstream_set_buffering (XLSTREAM (data->c.lstreams[0]), |
| 3953 LSTREAM_UNBUFFERED, 0); | |
| 3954 | |
| 3955 first_time = 1; | |
| 3956 data->c.initted = 1; | |
| 3957 } | |
| 3958 | |
| 3959 /* If necessary, do encoding-detection now. We do this when we're a | |
| 3960 writing stream or a non-seekable reading stream, meaning that we | |
| 3961 can't just process the whole input, rewind, and start over. */ | |
| 3962 | |
| 3963 if (csdata->do_coding) | |
| 3964 { | |
| 3965 int actual_was_nil = NILP (data->actual); | |
| 3966 if (NILP (data->actual)) | |
| 3967 { | |
| 3968 if (!data->st) | |
| 3969 data->st = allocate_detection_state (); | |
| 3970 if (first_time) | |
| 3971 /* #### This is cheesy. What we really ought to do is buffer | |
| 3972 up a certain minimum amount of data to get a better result. | |
| 3973 */ | |
| 3974 data->actual = look_for_coding_system_magic_cookie (src, n); | |
| 3975 if (NILP (data->actual)) | |
| 3976 { | |
| 3977 /* #### This is cheesy. What we really ought to do is buffer | |
| 3978 up a certain minimum amount of data so as to get a less | |
| 3979 random result when doing subprocess detection. */ | |
| 3980 detect_coding_type (data->st, src, n); | |
| 3981 data->actual = detected_coding_system (data->st); | |
| 4100 | 3982 /* kludge to prevent infinite recursion */ |
| 3983 if (XCODING_SYSTEM(data->actual)->methods->enumtype == undecided_coding_system) | |
| 3984 data->actual = Fget_coding_system (Qbinary); | |
| 771 | 3985 } |
| 3986 } | |
| 3987 /* We need to set the detected coding system if we actually have | |
| 3988 such a coding system but didn't before. That is the case | |
| 3989 either when we just detected it in the previous code or when | |
| 3990 it was detected during undecided_init_coding_stream(). We | |
| 3991 can check for that using first_time. */ | |
| 3992 if (!NILP (data->actual) && (actual_was_nil || first_time)) | |
| 3993 { | |
| 3994 /* If the detected coding system doesn't allow for EOL | |
| 3995 autodetection, try to get the equivalent that does; | |
| 3996 otherwise, disable EOL detection (overriding whatever | |
| 3997 may already have been detected). */ | |
| 3998 if (XCODING_SYSTEM_EOL_TYPE (data->actual) != EOL_AUTODETECT) | |
| 3999 { | |
| 4000 if (!NILP (XCODING_SYSTEM_SUBSIDIARY_PARENT (data->actual))) | |
| 4001 data->actual = | |
| 4002 XCODING_SYSTEM_SUBSIDIARY_PARENT (data->actual); | |
| 4003 else if (data->c.lstream_count == 3) | |
| 4004 set_coding_stream_coding_system | |
| 4005 (XLSTREAM (data->c.lstreams[1]), | |
| 4006 Fget_coding_system (Qidentity)); | |
| 4007 } | |
| 4008 set_coding_stream_coding_system | |
| 4009 (XLSTREAM (data->c.lstreams[0]), data->actual); | |
| 4010 } | |
| 4011 } | |
| 4012 | |
| 4013 if (Lstream_write (XLSTREAM (data->c.lstreams[0]), src, n) < 0) | |
| 4014 return -1; | |
| 4015 return n; | |
| 4016 } | |
| 4017 else | |
| 4018 return no_conversion_convert (str, src, dst, n); | |
| 4019 } | |
| 4020 | |
| 4021 static Lisp_Object | |
| 4022 undecided_canonicalize_after_coding (struct coding_stream *str) | |
| 4023 { | |
| 4024 struct undecided_coding_stream *data = | |
| 4025 CODING_STREAM_TYPE_DATA (str, undecided); | |
| 4026 Lisp_Object ret, eolret; | |
| 4027 | |
| 4028 if (str->direction == CODING_ENCODE) | |
| 4029 return str->codesys; | |
| 4030 | |
| 4031 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
|
4032 return str->codesys; |
| 771 | 4033 |
| 4034 ret = coding_stream_canonicalize_after_coding | |
| 4035 (XLSTREAM (data->c.lstreams[0])); | |
| 4036 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
|
4037 ret = str->codesys; |
| 771 | 4038 if (XCODING_SYSTEM_EOL_TYPE (ret) != EOL_AUTODETECT) |
| 4039 return ret; | |
| 4040 eolret = coding_stream_canonicalize_after_coding | |
| 4041 (XLSTREAM (data->c.lstreams[1])); | |
| 4042 if (!EQ (XCODING_SYSTEM_TYPE (eolret), Qconvert_eol)) | |
| 4043 return ret; | |
| 4044 return | |
| 4045 Fsubsidiary_coding_system (ret, Fcoding_system_property (eolret, | |
| 4046 Qsubtype)); | |
| 4047 } | |
| 4048 | |
| 4049 | |
| 4050 /************************************************************************/ | |
| 4051 /* Lisp interface: Coding category functions and detection */ | |
| 4052 /************************************************************************/ | |
| 4053 | |
| 4054 DEFUN ("coding-category-list", Fcoding_category_list, 0, 0, 0, /* | |
| 4055 Return a list of all recognized coding categories. | |
| 4056 */ | |
| 4057 ()) | |
| 4058 { | |
| 4059 int i; | |
| 4060 Lisp_Object list = Qnil; | |
| 4061 | |
| 4062 for (i = 0; i < coding_detector_count; i++) | |
| 4063 { | |
| 4064 detector_category_dynarr *cats = | |
| 4065 Dynarr_at (all_coding_detectors, i).cats; | |
| 4066 int j; | |
| 4067 | |
| 4068 for (j = 0; j < Dynarr_length (cats); j++) | |
| 4069 list = Fcons (Dynarr_at (cats, j).sym, list); | |
| 4070 } | |
| 4071 | |
| 4072 return Fnreverse (list); | |
| 4073 } | |
| 4074 | |
| 4075 DEFUN ("set-coding-priority-list", Fset_coding_priority_list, 1, 1, 0, /* | |
| 4076 Change the priority order of the coding categories. | |
| 4077 LIST should be list of coding categories, in descending order of | |
| 4078 priority. Unspecified coding categories will be lower in priority | |
| 4079 than all specified ones, in the same relative order they were in | |
| 4080 previously. | |
| 4081 */ | |
| 4082 (list)) | |
| 4083 { | |
| 4084 int *category_to_priority = | |
| 4085 alloca_array (int, coding_detector_category_count); | |
| 4086 int i, j; | |
| 4087 | |
| 4088 /* First generate a list that maps coding categories to priorities. */ | |
| 4089 | |
| 4090 for (i = 0; i < coding_detector_category_count; i++) | |
| 4091 category_to_priority[i] = -1; | |
| 4092 | |
| 4093 /* Highest priority comes from the specified list. */ | |
| 4094 i = 0; | |
| 2367 | 4095 { |
| 4096 EXTERNAL_LIST_LOOP_2 (elt, list) | |
| 4097 { | |
| 4098 int cat = coding_category_symbol_to_id (elt); | |
| 4099 | |
| 4100 if (category_to_priority[cat] >= 0) | |
| 4101 sferror ("Duplicate coding category in list", elt); | |
| 4102 category_to_priority[cat] = i++; | |
| 4103 } | |
| 4104 } | |
| 771 | 4105 |
| 4106 /* Now go through the existing categories by priority to retrieve | |
| 4107 the categories not yet specified and preserve their priority | |
| 4108 order. */ | |
| 4109 for (j = 0; j < coding_detector_category_count; j++) | |
| 4110 { | |
| 4111 int cat = coding_category_by_priority[j]; | |
| 4112 if (category_to_priority[cat] < 0) | |
| 4113 category_to_priority[cat] = i++; | |
| 4114 } | |
| 4115 | |
| 4116 /* Now we need to construct the inverse of the mapping we just | |
| 4117 constructed. */ | |
| 4118 | |
| 4119 for (i = 0; i < coding_detector_category_count; i++) | |
| 4120 coding_category_by_priority[category_to_priority[i]] = i; | |
| 4121 | |
| 4122 /* Phew! That was confusing. */ | |
| 4123 return Qnil; | |
| 4124 } | |
| 4125 | |
| 4126 DEFUN ("coding-priority-list", Fcoding_priority_list, 0, 0, 0, /* | |
| 4127 Return a list of coding categories in descending order of priority. | |
| 4128 */ | |
| 4129 ()) | |
| 4130 { | |
| 4131 int i; | |
| 4132 Lisp_Object list = Qnil; | |
| 4133 | |
| 4134 for (i = 0; i < coding_detector_category_count; i++) | |
| 4135 list = | |
| 4136 Fcons (coding_category_id_to_symbol (coding_category_by_priority[i]), | |
| 4137 list); | |
| 4138 return Fnreverse (list); | |
| 4139 } | |
| 4140 | |
| 4141 DEFUN ("set-coding-category-system", Fset_coding_category_system, 2, 2, 0, /* | |
| 4142 Change the coding system associated with a coding category. | |
| 4143 */ | |
| 4144 (coding_category, coding_system)) | |
| 4145 { | |
| 4146 coding_category_system[coding_category_symbol_to_id (coding_category)] = | |
| 4147 Fget_coding_system (coding_system); | |
| 4148 return Qnil; | |
| 4149 } | |
| 4150 | |
| 4151 DEFUN ("coding-category-system", Fcoding_category_system, 1, 1, 0, /* | |
| 4152 Return the coding system associated with a coding category. | |
| 4153 */ | |
| 4154 (coding_category)) | |
| 4155 { | |
| 4156 Lisp_Object sys = | |
| 4157 coding_category_system[coding_category_symbol_to_id (coding_category)]; | |
| 4158 | |
| 4159 if (!NILP (sys)) | |
| 4160 return XCODING_SYSTEM_NAME (sys); | |
| 4161 return Qnil; | |
| 4162 } | |
| 4163 | |
| 800 | 4164 /* Detect the encoding of STREAM. Assumes stream is at the begnning and will |
| 4165 read through to the end of STREAM, leaving it there but open. */ | |
| 4166 | |
| 771 | 4167 Lisp_Object |
| 4168 detect_coding_stream (Lisp_Object stream) | |
| 4169 { | |
| 4170 Lisp_Object val = Qnil; | |
| 4171 struct gcpro gcpro1, gcpro2, gcpro3; | |
| 4172 UExtbyte random_buffer[65536]; | |
| 4173 Lisp_Object binary_instream = | |
| 4174 make_coding_input_stream | |
| 4175 (XLSTREAM (stream), Qbinary, | |
| 814 | 4176 CODING_ENCODE, LSTREAM_FL_NO_CLOSE_OTHER); |
| 771 | 4177 Lisp_Object decstream = |
| 4178 make_coding_input_stream | |
| 4179 (XLSTREAM (binary_instream), | |
| 800 | 4180 Qundecided, CODING_DECODE, 0); |
| 771 | 4181 Lstream *decstr = XLSTREAM (decstream); |
| 4182 | |
| 4183 GCPRO3 (decstream, stream, binary_instream); | |
| 4184 /* Read and discard all data; detection happens as a side effect of this, | |
| 4185 and we examine what was detected afterwards. */ | |
| 4186 while (Lstream_read (decstr, random_buffer, sizeof (random_buffer)) > 0) | |
| 4187 ; | |
| 4188 | |
| 4189 val = coding_stream_detected_coding_system (decstr); | |
| 4190 Lstream_close (decstr); | |
| 4191 Lstream_delete (decstr); | |
| 4192 Lstream_delete (XLSTREAM (binary_instream)); | |
| 4193 UNGCPRO; | |
| 4194 return val; | |
| 428 | 4195 } |
| 4196 | |
| 4197 DEFUN ("detect-coding-region", Fdetect_coding_region, 2, 3, 0, /* | |
| 4198 Detect coding system of the text in the region between START and END. | |
| 444 | 4199 Return a list of possible coding systems ordered by priority. |
| 3025 | 4200 If only ASCII characters are found, return `undecided' or one of |
| 428 | 4201 its subsidiary coding systems according to a detected end-of-line |
| 4202 type. Optional arg BUFFER defaults to the current buffer. | |
| 4203 */ | |
| 4204 (start, end, buffer)) | |
| 4205 { | |
| 4206 Lisp_Object val = Qnil; | |
| 4207 struct buffer *buf = decode_buffer (buffer, 0); | |
| 665 | 4208 Charbpos b, e; |
| 771 | 4209 Lisp_Object lb_instream; |
| 428 | 4210 |
| 4211 get_buffer_range_char (buf, start, end, &b, &e, 0); | |
| 4212 lb_instream = make_lisp_buffer_input_stream (buf, b, e, 0); | |
| 771 | 4213 |
| 4214 val = detect_coding_stream (lb_instream); | |
| 4215 Lstream_delete (XLSTREAM (lb_instream)); | |
| 428 | 4216 return val; |
| 4217 } | |
| 4218 | |
| 4219 | |
| 771 | 4220 |
| 4221 #ifdef DEBUG_XEMACS | |
| 4222 | |
| 428 | 4223 /************************************************************************/ |
| 771 | 4224 /* Internal methods */ |
| 4225 /************************************************************************/ | |
| 4226 | |
| 4227 /* Raw (internally-formatted) data. */ | |
| 4228 DEFINE_CODING_SYSTEM_TYPE (internal); | |
| 428 | 4229 |
| 665 | 4230 static Bytecount |
| 2286 | 4231 internal_convert (struct coding_stream *UNUSED (str), const UExtbyte *src, |
| 771 | 4232 unsigned_char_dynarr *dst, Bytecount n) |
| 4233 { | |
| 4234 Bytecount orign = n; | |
| 4235 Dynarr_add_many (dst, src, n); | |
| 4236 return orign; | |
| 4237 } | |
| 4238 | |
| 4239 #endif /* DEBUG_XEMACS */ | |
| 4240 | |
| 4241 | |
| 4242 | |
| 4243 #ifdef HAVE_ZLIB | |
| 4244 | |
| 4245 /************************************************************************/ | |
| 4246 /* Gzip methods */ | |
| 4247 /************************************************************************/ | |
| 4248 | |
| 4249 struct gzip_coding_system | |
| 428 | 4250 { |
| 771 | 4251 int level; /* 0 through 9, or -1 for default */ |
| 4252 }; | |
| 4253 | |
| 4254 #define CODING_SYSTEM_GZIP_LEVEL(codesys) \ | |
| 4255 (CODING_SYSTEM_TYPE_DATA (codesys, gzip)->level) | |
| 4256 #define XCODING_SYSTEM_GZIP_LEVEL(codesys) \ | |
| 4257 (XCODING_SYSTEM_TYPE_DATA (codesys, gzip)->level) | |
| 4258 | |
| 4259 struct gzip_coding_stream | |
| 428 | 4260 { |
| 771 | 4261 z_stream stream; |
| 4262 int stream_initted; | |
| 4263 int reached_eof; /* #### this should be handled by the caller, once we | |
| 4264 return LSTREAM_EOF */ | |
| 4265 }; | |
| 4266 | |
| 1204 | 4267 static const struct memory_description |
| 771 | 4268 gzip_coding_system_description[] = { |
| 4269 { XD_END } | |
| 4270 }; | |
| 4271 | |
| 1204 | 4272 DEFINE_CODING_SYSTEM_TYPE_WITH_DATA (gzip); |
| 4273 | |
| 771 | 4274 enum source_sink_type |
| 4275 gzip_conversion_end_type (Lisp_Object codesys) | |
| 4276 { | |
| 4277 return DECODES_BYTE_TO_BYTE; | |
| 428 | 4278 } |
| 4279 | |
| 4280 static void | |
| 771 | 4281 gzip_init (Lisp_Object codesys) |
| 4282 { | |
| 4283 struct gzip_coding_system *data = XCODING_SYSTEM_TYPE_DATA (codesys, gzip); | |
| 4284 data->level = -1; | |
| 4285 } | |
| 4286 | |
| 4287 static void | |
| 4288 gzip_print (Lisp_Object cs, Lisp_Object printcharfun, int escapeflag) | |
| 428 | 4289 { |
| 771 | 4290 struct gzip_coding_system *data = XCODING_SYSTEM_TYPE_DATA (cs, gzip); |
| 4291 | |
|
4952
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Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4292 write_ascstring (printcharfun, "("); |
| 771 | 4293 if (data->level == -1) |
|
4952
19a72041c5ed
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Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4294 write_ascstring (printcharfun, "default"); |
| 771 | 4295 else |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
4296 print_internal (make_fixnum (data->level), printcharfun, 0); |
|
4952
19a72041c5ed
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Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4297 write_ascstring (printcharfun, ")"); |
| 428 | 4298 } |
| 4299 | |
| 4300 static int | |
| 771 | 4301 gzip_putprop (Lisp_Object codesys, Lisp_Object key, Lisp_Object value) |
| 428 | 4302 { |
| 771 | 4303 struct gzip_coding_system *data = XCODING_SYSTEM_TYPE_DATA (codesys, gzip); |
| 4304 | |
| 4305 if (EQ (key, Qlevel)) | |
| 428 | 4306 { |
| 771 | 4307 if (EQ (value, Qdefault)) |
| 4308 data->level = -1; | |
| 4309 else | |
| 428 | 4310 { |
|
5581
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
4311 check_integer_range (value, Qzero, make_fixnum (9)); |
|
56144c8593a8
Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
4312 data->level = XFIXNUM (value); |
| 428 | 4313 } |
| 4314 } | |
| 4315 else | |
| 771 | 4316 return 0; |
| 4317 return 1; | |
| 428 | 4318 } |
| 4319 | |
| 4320 static Lisp_Object | |
| 771 | 4321 gzip_getprop (Lisp_Object coding_system, Lisp_Object prop) |
| 428 | 4322 { |
| 771 | 4323 struct gzip_coding_system *data = |
| 4324 XCODING_SYSTEM_TYPE_DATA (coding_system, gzip); | |
| 4325 | |
| 4326 if (EQ (prop, Qlevel)) | |
| 428 | 4327 { |
| 771 | 4328 if (data->level == -1) |
| 4329 return Qdefault; | |
|
5581
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Mechanically change INT to FIXNUM in our sources.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5474
diff
changeset
|
4330 return make_fixnum (data->level); |
| 428 | 4331 } |
| 771 | 4332 |
| 4333 return Qunbound; | |
| 428 | 4334 } |
| 4335 | |
| 4336 static void | |
| 771 | 4337 gzip_init_coding_stream (struct coding_stream *str) |
| 428 | 4338 { |
| 771 | 4339 struct gzip_coding_stream *data = CODING_STREAM_TYPE_DATA (str, gzip); |
| 4340 if (data->stream_initted) | |
| 428 | 4341 { |
| 771 | 4342 if (str->direction == CODING_DECODE) |
| 4343 inflateEnd (&data->stream); | |
| 4344 else | |
| 4345 deflateEnd (&data->stream); | |
| 4346 data->stream_initted = 0; | |
| 428 | 4347 } |
| 771 | 4348 data->reached_eof = 0; |
| 428 | 4349 } |
| 4350 | |
| 4351 static void | |
| 771 | 4352 gzip_rewind_coding_stream (struct coding_stream *str) |
| 428 | 4353 { |
| 771 | 4354 gzip_init_coding_stream (str); |
| 428 | 4355 } |
| 4356 | |
| 771 | 4357 static Bytecount |
| 4358 gzip_convert (struct coding_stream *str, | |
| 4359 const UExtbyte *src, | |
| 4360 unsigned_char_dynarr *dst, Bytecount n) | |
| 428 | 4361 { |
| 771 | 4362 struct gzip_coding_stream *data = CODING_STREAM_TYPE_DATA (str, gzip); |
| 4363 int zerr; | |
| 4364 if (str->direction == CODING_DECODE) | |
| 428 | 4365 { |
| 771 | 4366 if (data->reached_eof) |
| 4367 return n; /* eat the data */ | |
| 4368 | |
| 4369 if (!data->stream_initted) | |
| 428 | 4370 { |
| 771 | 4371 xzero (data->stream); |
| 4372 if (inflateInit (&data->stream) != Z_OK) | |
| 4373 return LSTREAM_ERROR; | |
| 4374 data->stream_initted = 1; | |
| 428 | 4375 } |
| 771 | 4376 |
| 4377 data->stream.next_in = (Bytef *) src; | |
| 4378 data->stream.avail_in = n; | |
| 4379 | |
| 4380 /* Normally we stop when we've fed all data to the decompressor; but | |
| 4381 if we're at the end of the input, and the decompressor hasn't | |
| 4382 reported EOF, we need to keep going, as there might be more output | |
| 4383 to generate. Z_OK from the decompressor means input was processed | |
| 4384 or output was generated; if neither, we break out of the loop. | |
| 4385 Other return values are: | |
| 4386 | |
| 4387 Z_STREAM_END EOF from decompressor | |
| 4388 Z_DATA_ERROR Corrupted data | |
| 4389 Z_BUF_ERROR No progress possible (this should happen if | |
| 4390 we try to feed it an incomplete file) | |
| 4391 Z_MEM_ERROR Out of memory | |
| 4392 Z_STREAM_ERROR (should never happen) | |
| 4393 Z_NEED_DICT (#### when will this happen?) | |
| 4394 */ | |
| 4395 while (data->stream.avail_in > 0 || str->eof) | |
| 4396 { | |
| 4397 /* Reserve an output buffer of the same size as the input buffer; | |
| 4398 if that's not enough, we keep reserving the same size. */ | |
| 4399 Bytecount reserved = n; | |
| 4400 Dynarr_add_many (dst, 0, reserved); | |
| 4401 /* Careful here! Don't retrieve the pointer until after | |
| 4402 reserving the space, or it might be bogus */ | |
| 4403 data->stream.next_out = | |
| 4404 Dynarr_atp (dst, Dynarr_length (dst) - reserved); | |
| 4405 data->stream.avail_out = reserved; | |
| 4406 zerr = inflate (&data->stream, Z_NO_FLUSH); | |
| 4407 /* Lop off the unused portion */ | |
| 5038 | 4408 Dynarr_set_lengthr (dst, Dynarr_length (dst) - data->stream.avail_out); |
| 771 | 4409 if (zerr != Z_OK) |
| 4410 break; | |
| 4411 } | |
| 4412 | |
| 4413 if (zerr == Z_STREAM_END) | |
| 4414 data->reached_eof = 1; | |
| 4415 | |
| 4416 if ((Bytecount) data->stream.avail_in < n) | |
| 4417 return n - data->stream.avail_in; | |
| 4418 | |
| 4419 if (zerr == Z_OK || zerr == Z_STREAM_END) | |
| 4420 return 0; | |
| 4421 | |
| 4422 return LSTREAM_ERROR; | |
| 428 | 4423 } |
| 4424 else | |
| 4425 { | |
| 771 | 4426 if (!data->stream_initted) |
| 4427 { | |
| 4428 int level = XCODING_SYSTEM_GZIP_LEVEL (str->codesys); | |
| 4429 xzero (data->stream); | |
| 4430 if (deflateInit (&data->stream, | |
| 4431 level == -1 ? Z_DEFAULT_COMPRESSION : level) != | |
| 4432 Z_OK) | |
| 4433 return LSTREAM_ERROR; | |
| 4434 data->stream_initted = 1; | |
| 428 | 4435 } |
| 771 | 4436 |
| 4437 data->stream.next_in = (Bytef *) src; | |
| 4438 data->stream.avail_in = n; | |
| 4439 | |
| 4440 /* Normally we stop when we've fed all data to the compressor; but if | |
| 4441 we're at the end of the input, and the compressor hasn't reported | |
| 4442 EOF, we need to keep going, as there might be more output to | |
| 4443 generate. (To signal EOF on our end, we set the FLUSH parameter | |
| 4444 to Z_FINISH; when all data is output, Z_STREAM_END will be | |
| 4445 returned.) Z_OK from the compressor means input was processed or | |
| 4446 output was generated; if neither, we break out of the loop. Other | |
| 4447 return values are: | |
| 4448 | |
| 4449 Z_STREAM_END EOF from compressor | |
| 4450 Z_BUF_ERROR No progress possible (should never happen) | |
| 4451 Z_STREAM_ERROR (should never happen) | |
| 4452 */ | |
| 4453 while (data->stream.avail_in > 0 || str->eof) | |
| 4454 { | |
| 4455 /* Reserve an output buffer of the same size as the input buffer; | |
| 4456 if that's not enough, we keep reserving the same size. */ | |
| 4457 Bytecount reserved = n; | |
| 4458 Dynarr_add_many (dst, 0, reserved); | |
| 4459 /* Careful here! Don't retrieve the pointer until after | |
| 4460 reserving the space, or it might be bogus */ | |
| 4461 data->stream.next_out = | |
| 4462 Dynarr_atp (dst, Dynarr_length (dst) - reserved); | |
| 4463 data->stream.avail_out = reserved; | |
| 4464 zerr = | |
| 4465 deflate (&data->stream, | |
| 4466 str->eof ? Z_FINISH : Z_NO_FLUSH); | |
| 4467 /* Lop off the unused portion */ | |
| 5038 | 4468 Dynarr_set_lengthr (dst, Dynarr_length (dst) - data->stream.avail_out); |
| 771 | 4469 if (zerr != Z_OK) |
| 4470 break; | |
| 4471 } | |
| 4472 | |
| 4473 if ((Bytecount) data->stream.avail_in < n) | |
| 4474 return n - data->stream.avail_in; | |
| 4475 | |
| 4476 if (zerr == Z_OK || zerr == Z_STREAM_END) | |
| 4477 return 0; | |
| 4478 | |
| 4479 return LSTREAM_ERROR; | |
| 428 | 4480 } |
| 4481 } | |
| 4482 | |
| 771 | 4483 #endif /* HAVE_ZLIB */ |
| 428 | 4484 |
| 4485 | |
| 4486 /************************************************************************/ | |
| 4487 /* Initialization */ | |
| 4488 /************************************************************************/ | |
| 4489 | |
| 4490 void | |
| 4491 syms_of_file_coding (void) | |
| 4492 { | |
|
5117
3742ea8250b5
Checking in final CVS version of workspace 'ben-lisp-object'
Ben Wing <ben@xemacs.org>
parents:
3025
diff
changeset
|
4493 INIT_LISP_OBJECT (coding_system); |
| 442 | 4494 |
| 771 | 4495 DEFSUBR (Fvalid_coding_system_type_p); |
| 4496 DEFSUBR (Fcoding_system_type_list); | |
| 428 | 4497 DEFSUBR (Fcoding_system_p); |
| 4303 | 4498 DEFSUBR (Fautoload_coding_system); |
| 428 | 4499 DEFSUBR (Ffind_coding_system); |
| 4500 DEFSUBR (Fget_coding_system); | |
| 4501 DEFSUBR (Fcoding_system_list); | |
| 4502 DEFSUBR (Fcoding_system_name); | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4503 DEFSUBR (Fmake_coding_system_internal); |
| 428 | 4504 DEFSUBR (Fcopy_coding_system); |
| 440 | 4505 DEFSUBR (Fcoding_system_canonical_name_p); |
| 4506 DEFSUBR (Fcoding_system_alias_p); | |
| 4507 DEFSUBR (Fcoding_system_aliasee); | |
| 428 | 4508 DEFSUBR (Fdefine_coding_system_alias); |
| 4509 DEFSUBR (Fsubsidiary_coding_system); | |
| 771 | 4510 DEFSUBR (Fcoding_system_base); |
| 4511 DEFSUBR (Fcoding_system_used_for_io); | |
| 428 | 4512 |
| 4513 DEFSUBR (Fcoding_system_type); | |
| 771 | 4514 DEFSUBR (Fcoding_system_description); |
| 428 | 4515 DEFSUBR (Fcoding_system_property); |
| 4516 | |
| 4517 DEFSUBR (Fcoding_category_list); | |
| 4518 DEFSUBR (Fset_coding_priority_list); | |
| 4519 DEFSUBR (Fcoding_priority_list); | |
| 4520 DEFSUBR (Fset_coding_category_system); | |
| 4521 DEFSUBR (Fcoding_category_system); | |
| 4522 | |
| 4523 DEFSUBR (Fdetect_coding_region); | |
| 4524 DEFSUBR (Fdecode_coding_region); | |
| 4525 DEFSUBR (Fencode_coding_region); | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4526 DEFSUBR (Fquery_coding_region); |
| 563 | 4527 DEFSYMBOL_MULTIWORD_PREDICATE (Qcoding_systemp); |
| 4528 DEFSYMBOL (Qno_conversion); | |
| 771 | 4529 DEFSYMBOL (Qconvert_eol); |
| 4530 DEFSYMBOL (Qconvert_eol_autodetect); | |
| 4531 DEFSYMBOL (Qconvert_eol_lf); | |
| 4532 DEFSYMBOL (Qconvert_eol_cr); | |
| 4533 DEFSYMBOL (Qconvert_eol_crlf); | |
| 563 | 4534 DEFSYMBOL (Qraw_text); |
| 771 | 4535 |
| 563 | 4536 DEFSYMBOL (Qmnemonic); |
| 4537 DEFSYMBOL (Qeol_type); | |
| 4538 DEFSYMBOL (Qpost_read_conversion); | |
| 4539 DEFSYMBOL (Qpre_write_conversion); | |
| 4540 | |
| 771 | 4541 DEFSYMBOL (Qtranslation_table_for_decode); |
| 4542 DEFSYMBOL (Qtranslation_table_for_encode); | |
| 4543 DEFSYMBOL (Qsafe_chars); | |
| 4544 DEFSYMBOL (Qsafe_charsets); | |
| 4545 DEFSYMBOL (Qmime_charset); | |
| 4546 DEFSYMBOL (Qvalid_codes); | |
| 4547 | |
| 563 | 4548 DEFSYMBOL (Qcr); |
| 4549 DEFSYMBOL (Qlf); | |
| 4550 DEFSYMBOL (Qcrlf); | |
| 4551 DEFSYMBOL (Qeol_cr); | |
| 4552 DEFSYMBOL (Qeol_lf); | |
| 4553 DEFSYMBOL (Qeol_crlf); | |
| 4554 DEFSYMBOL (Qencode); | |
| 4555 DEFSYMBOL (Qdecode); | |
| 428 | 4556 |
| 771 | 4557 DEFSYMBOL (Qnear_certainty); |
| 4558 DEFSYMBOL (Qquite_probable); | |
| 4559 DEFSYMBOL (Qsomewhat_likely); | |
| 1494 | 4560 DEFSYMBOL (Qslightly_likely); |
| 771 | 4561 DEFSYMBOL (Qas_likely_as_unlikely); |
| 4562 DEFSYMBOL (Qsomewhat_unlikely); | |
| 4563 DEFSYMBOL (Qquite_improbable); | |
| 4564 DEFSYMBOL (Qnearly_impossible); | |
| 4565 | |
| 4566 DEFSYMBOL (Qdo_eol); | |
| 4567 DEFSYMBOL (Qdo_coding); | |
| 4568 | |
| 4569 DEFSYMBOL (Qcanonicalize_after_coding); | |
| 4570 | |
| 4303 | 4571 DEFSYMBOL (Qposix_charset_to_coding_system_hash); |
| 4572 | |
| 771 | 4573 DEFSYMBOL (Qescape_quoted); |
| 4574 | |
|
4690
257b468bf2ca
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Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4575 DEFSYMBOL (Qquery_coding_warning_face); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4576 DEFSYMBOL (Qaliases); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4577 DEFSYMBOL (Qcharset_skip_chars_string); |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4578 |
| 771 | 4579 #ifdef HAVE_ZLIB |
| 4580 DEFSYMBOL (Qgzip); | |
| 4581 #endif | |
| 4582 | |
| 428 | 4583 } |
| 4584 | |
| 4585 void | |
| 4586 lstream_type_create_file_coding (void) | |
| 4587 { | |
| 771 | 4588 LSTREAM_HAS_METHOD (coding, reader); |
| 4589 LSTREAM_HAS_METHOD (coding, writer); | |
| 4590 LSTREAM_HAS_METHOD (coding, rewinder); | |
| 4591 LSTREAM_HAS_METHOD (coding, seekable_p); | |
| 4592 LSTREAM_HAS_METHOD (coding, marker); | |
| 4593 LSTREAM_HAS_METHOD (coding, flusher); | |
| 4594 LSTREAM_HAS_METHOD (coding, closer); | |
| 4595 LSTREAM_HAS_METHOD (coding, finalizer); | |
| 4596 } | |
| 4597 | |
| 4598 void | |
| 4599 coding_system_type_create (void) | |
| 4600 { | |
| 4601 int i; | |
| 4602 | |
| 4603 staticpro (&Vcoding_system_hash_table); | |
| 4604 Vcoding_system_hash_table = | |
|
5191
71ee43b8a74d
Add #'equalp as a hash test by default; add #'define-hash-table-test, GNU API
Aidan Kehoe <kehoea@parhasard.net>
parents:
5169
diff
changeset
|
4605 make_lisp_hash_table (50, HASH_TABLE_NON_WEAK, Qeq); |
| 771 | 4606 |
| 4607 the_coding_system_type_entry_dynarr = Dynarr_new (coding_system_type_entry); | |
| 2367 | 4608 dump_add_root_block_ptr (&the_coding_system_type_entry_dynarr, |
| 771 | 4609 &csted_description); |
| 4610 | |
| 4611 Vcoding_system_type_list = Qnil; | |
| 4612 staticpro (&Vcoding_system_type_list); | |
| 4613 | |
| 4614 /* Initialize to something reasonable ... */ | |
| 4615 for (i = 0; i < MAX_DETECTOR_CATEGORIES; i++) | |
| 4616 { | |
| 4617 coding_category_system[i] = Qnil; | |
| 1204 | 4618 dump_add_root_lisp_object (&coding_category_system[i]); |
| 771 | 4619 coding_category_by_priority[i] = i; |
| 4620 } | |
| 4621 | |
| 4622 dump_add_opaque (coding_category_by_priority, | |
| 4623 sizeof (coding_category_by_priority)); | |
| 4624 | |
| 4625 all_coding_detectors = Dynarr_new2 (detector_dynarr, struct detector); | |
| 2367 | 4626 dump_add_root_block_ptr (&all_coding_detectors, |
| 771 | 4627 &detector_dynarr_description); |
| 4628 | |
| 4629 dump_add_opaque_int (&coding_system_tick); | |
| 4630 dump_add_opaque_int (&coding_detector_count); | |
| 4631 dump_add_opaque_int (&coding_detector_category_count); | |
| 4632 | |
| 4633 INITIALIZE_CODING_SYSTEM_TYPE (no_conversion, | |
| 4634 "no-conversion-coding-system-p"); | |
| 4635 CODING_SYSTEM_HAS_METHOD (no_conversion, convert); | |
| 4636 | |
| 4637 INITIALIZE_DETECTOR (no_conversion); | |
| 4638 DETECTOR_HAS_METHOD (no_conversion, detect); | |
| 4639 INITIALIZE_DETECTOR_CATEGORY (no_conversion, no_conversion); | |
| 4640 | |
| 4641 INITIALIZE_CODING_SYSTEM_TYPE_WITH_DATA (convert_eol, | |
| 4642 "convert-eol-coding-system-p"); | |
| 4643 CODING_SYSTEM_HAS_METHOD (convert_eol, print); | |
| 4644 CODING_SYSTEM_HAS_METHOD (convert_eol, convert); | |
| 4645 CODING_SYSTEM_HAS_METHOD (convert_eol, getprop); | |
| 4646 CODING_SYSTEM_HAS_METHOD (convert_eol, putprop); | |
| 4647 CODING_SYSTEM_HAS_METHOD (convert_eol, conversion_end_type); | |
| 4648 CODING_SYSTEM_HAS_METHOD (convert_eol, canonicalize_after_coding); | |
| 4649 CODING_SYSTEM_HAS_METHOD (convert_eol, init_coding_stream); | |
| 4650 | |
| 4651 INITIALIZE_CODING_SYSTEM_TYPE_WITH_DATA (undecided, | |
| 4652 "undecided-coding-system-p"); | |
| 4653 CODING_SYSTEM_HAS_METHOD (undecided, init); | |
| 4654 CODING_SYSTEM_HAS_METHOD (undecided, mark); | |
| 4655 CODING_SYSTEM_HAS_METHOD (undecided, print); | |
| 4656 CODING_SYSTEM_HAS_METHOD (undecided, convert); | |
| 4657 CODING_SYSTEM_HAS_METHOD (undecided, putprop); | |
| 4658 CODING_SYSTEM_HAS_METHOD (undecided, getprop); | |
| 4659 CODING_SYSTEM_HAS_METHOD (undecided, init_coding_stream); | |
| 4660 CODING_SYSTEM_HAS_METHOD (undecided, rewind_coding_stream); | |
| 4661 CODING_SYSTEM_HAS_METHOD (undecided, finalize_coding_stream); | |
| 4662 CODING_SYSTEM_HAS_METHOD (undecided, mark_coding_stream); | |
| 4663 CODING_SYSTEM_HAS_METHOD (undecided, canonicalize); | |
| 4664 CODING_SYSTEM_HAS_METHOD (undecided, canonicalize_after_coding); | |
| 4665 | |
| 4666 INITIALIZE_CODING_SYSTEM_TYPE_WITH_DATA (chain, "chain-coding-system-p"); | |
| 4667 | |
| 4668 CODING_SYSTEM_HAS_METHOD (chain, print); | |
| 4669 CODING_SYSTEM_HAS_METHOD (chain, canonicalize); | |
| 4670 CODING_SYSTEM_HAS_METHOD (chain, init); | |
| 4671 CODING_SYSTEM_HAS_METHOD (chain, mark); | |
| 4672 CODING_SYSTEM_HAS_METHOD (chain, mark_coding_stream); | |
| 4673 CODING_SYSTEM_HAS_METHOD (chain, convert); | |
| 4674 CODING_SYSTEM_HAS_METHOD (chain, rewind_coding_stream); | |
| 4675 CODING_SYSTEM_HAS_METHOD (chain, finalize_coding_stream); | |
| 4676 CODING_SYSTEM_HAS_METHOD (chain, finalize); | |
| 4677 CODING_SYSTEM_HAS_METHOD (chain, putprop); | |
| 4678 CODING_SYSTEM_HAS_METHOD (chain, getprop); | |
| 4679 CODING_SYSTEM_HAS_METHOD (chain, conversion_end_type); | |
| 4680 CODING_SYSTEM_HAS_METHOD (chain, canonicalize_after_coding); | |
| 4681 | |
| 4682 #ifdef DEBUG_XEMACS | |
| 4683 INITIALIZE_CODING_SYSTEM_TYPE (internal, "internal-coding-system-p"); | |
| 4684 CODING_SYSTEM_HAS_METHOD (internal, convert); | |
| 4685 #endif | |
| 4686 | |
| 4687 #ifdef HAVE_ZLIB | |
| 4688 INITIALIZE_CODING_SYSTEM_TYPE_WITH_DATA (gzip, "gzip-coding-system-p"); | |
| 4689 CODING_SYSTEM_HAS_METHOD (gzip, conversion_end_type); | |
| 4690 CODING_SYSTEM_HAS_METHOD (gzip, convert); | |
| 4691 CODING_SYSTEM_HAS_METHOD (gzip, init); | |
| 4692 CODING_SYSTEM_HAS_METHOD (gzip, print); | |
| 4693 CODING_SYSTEM_HAS_METHOD (gzip, init_coding_stream); | |
| 4694 CODING_SYSTEM_HAS_METHOD (gzip, rewind_coding_stream); | |
| 4695 CODING_SYSTEM_HAS_METHOD (gzip, putprop); | |
| 4696 CODING_SYSTEM_HAS_METHOD (gzip, getprop); | |
| 4697 #endif | |
| 4698 } | |
| 4699 | |
| 4700 void | |
| 4701 reinit_coding_system_type_create (void) | |
| 4702 { | |
| 4703 REINITIALIZE_CODING_SYSTEM_TYPE (no_conversion); | |
| 4704 REINITIALIZE_CODING_SYSTEM_TYPE (convert_eol); | |
| 4705 REINITIALIZE_CODING_SYSTEM_TYPE (undecided); | |
| 4706 REINITIALIZE_CODING_SYSTEM_TYPE (chain); | |
| 4707 #if 0 | |
| 4708 REINITIALIZE_CODING_SYSTEM_TYPE (text_file_wrapper); | |
| 4709 #endif /* 0 */ | |
| 4710 #ifdef DEBUG_XEMACS | |
| 4711 REINITIALIZE_CODING_SYSTEM_TYPE (internal); | |
| 4712 #endif | |
| 4713 #ifdef HAVE_ZLIB | |
| 4714 REINITIALIZE_CODING_SYSTEM_TYPE (gzip); | |
| 4715 #endif | |
| 4716 } | |
| 4717 | |
| 4718 void | |
| 4719 reinit_vars_of_file_coding (void) | |
| 4720 { | |
| 428 | 4721 } |
| 4722 | |
| 4723 void | |
| 4724 vars_of_file_coding (void) | |
| 4725 { | |
| 771 | 4726 /* We always have file-coding support */ |
| 428 | 4727 Fprovide (intern ("file-coding")); |
| 4728 | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4729 QScoding_system_cookie = build_ascstring (";;;###coding system: "); |
| 1347 | 4730 staticpro (&QScoding_system_cookie); |
| 4731 | |
| 1242 | 4732 #ifdef HAVE_DEFAULT_EOL_DETECTION |
| 2297 | 4733 /* #### Find a more appropriate place for this comment. |
| 4734 WARNING: The existing categories are intimately tied to the function | |
| 1242 | 4735 `coding-system-category' in coding.el. If you change a category, or |
| 4736 change the layout of any coding system associated with a category, you | |
| 4737 need to check that function and make sure it's written properly. */ | |
| 4738 | |
| 4739 Fprovide (intern ("unix-default-eol-detection")); | |
| 4740 #endif | |
| 4741 | |
| 428 | 4742 DEFVAR_LISP ("keyboard-coding-system", &Vkeyboard_coding_system /* |
| 3142 | 4743 Default coding system used for TTY and X11 keyboard input. |
|
5384
3889ef128488
Fix misspelled words, and some grammar, across the entire source tree.
Jerry James <james@xemacs.org>
parents:
5345
diff
changeset
|
4744 Under X11, used only to interpret the character for a key event when that |
| 3142 | 4745 event has a KeySym of NoSymbol but does have an associated string keysym, |
| 4746 something that's seen with input methods. | |
| 4747 | |
| 4748 If you need to set these things to different coding systems, call the | |
| 4749 function `set-console-tty-coding-system' for the TTY and use this variable | |
| 4750 for X11. | |
| 428 | 4751 */ ); |
| 4752 Vkeyboard_coding_system = Qnil; | |
| 4753 | |
| 4754 DEFVAR_LISP ("terminal-coding-system", &Vterminal_coding_system /* | |
| 4755 Coding system used for TTY display output. | |
| 4756 Not used under a windowing system. | |
| 4757 */ ); | |
| 4758 Vterminal_coding_system = Qnil; | |
| 4759 | |
| 4760 DEFVAR_LISP ("coding-system-for-read", &Vcoding_system_for_read /* | |
| 440 | 4761 Overriding coding system used when reading from a file or process. |
| 4762 You should bind this variable with `let', but do not set it globally. | |
| 4763 If this is non-nil, it specifies the coding system that will be used | |
| 4764 to decode input on read operations, such as from a file or process. | |
| 4765 It overrides `buffer-file-coding-system-for-read', | |
| 428 | 4766 `insert-file-contents-pre-hook', etc. Use those variables instead of |
| 440 | 4767 this one for permanent changes to the environment. */ ); |
| 428 | 4768 Vcoding_system_for_read = Qnil; |
| 4769 | |
| 4770 DEFVAR_LISP ("coding-system-for-write", | |
| 4771 &Vcoding_system_for_write /* | |
| 440 | 4772 Overriding coding system used when writing to 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 encode output for write operations, such as to a file or process. | |
| 4776 It overrides `buffer-file-coding-system', `write-region-pre-hook', etc. | |
| 4777 Use those variables instead of this one for permanent changes to the | |
| 4778 environment. */ ); | |
| 428 | 4779 Vcoding_system_for_write = Qnil; |
| 4780 | |
| 4781 DEFVAR_LISP ("file-name-coding-system", &Vfile_name_coding_system /* | |
| 4782 Coding system used to convert pathnames when accessing files. | |
| 4783 */ ); | |
| 4784 Vfile_name_coding_system = Qnil; | |
| 4785 | |
| 4786 DEFVAR_BOOL ("enable-multibyte-characters", &enable_multibyte_characters /* | |
| 771 | 4787 Setting this has no effect. It is purely for FSF compatibility. |
| 428 | 4788 */ ); |
| 4789 enable_multibyte_characters = 1; | |
| 771 | 4790 |
| 4791 Vchain_canonicalize_hash_table = | |
|
5191
71ee43b8a74d
Add #'equalp as a hash test by default; add #'define-hash-table-test, GNU API
Aidan Kehoe <kehoea@parhasard.net>
parents:
5169
diff
changeset
|
4792 make_lisp_hash_table (50, HASH_TABLE_NON_WEAK, Qequal); |
| 771 | 4793 staticpro (&Vchain_canonicalize_hash_table); |
| 4794 | |
| 4795 #ifdef DEBUG_XEMACS | |
| 4796 DEFVAR_LISP ("debug-coding-detection", &Vdebug_coding_detection /* | |
| 4797 If non-nil, display debug information about detection operations in progress. | |
| 4798 Information is displayed on stderr. | |
| 4799 */ ); | |
| 4800 Vdebug_coding_detection = Qnil; | |
| 4801 #endif | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4802 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4803 #ifdef MULE |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4804 Vdefault_query_coding_region_chartab_cache |
|
5191
71ee43b8a74d
Add #'equalp as a hash test by default; add #'define-hash-table-test, GNU API
Aidan Kehoe <kehoea@parhasard.net>
parents:
5169
diff
changeset
|
4805 = make_lisp_hash_table (25, HASH_TABLE_NON_WEAK, Qequal); |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4806 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
|
4807 #endif |
| 428 | 4808 } |
| 4809 | |
| 2297 | 4810 /* #### reformat this for consistent appearance? */ |
| 4811 | |
| 428 | 4812 void |
| 4813 complex_vars_of_file_coding (void) | |
| 4814 { | |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4815 Fmake_coding_system_internal |
| 771 | 4816 (Qconvert_eol_cr, Qconvert_eol, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4817 build_defer_string ("Convert CR to LF"), |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4818 listu (Qdocumentation, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4819 build_defer_string ( |
| 771 | 4820 "Converts CR (used to mark the end of a line on Macintosh systems) to LF\n" |
| 4821 "(used internally and under Unix to mark the end of a line)."), | |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4822 Qmnemonic, build_ascstring ("CR->LF"), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4823 Qsubtype, Qcr, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4824 /* VERY IMPORTANT! Tell make-coding-system not to generate |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4825 subsidiaries -- it needs the coding systems we're creating |
| 771 | 4826 to do so! */ |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4827 Qeol_type, Qlf, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4828 Qsafe_charsets, Qt, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4829 Qunbound)); |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4830 Fmake_coding_system_internal |
| 771 | 4831 (Qconvert_eol_lf, Qconvert_eol, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4832 build_defer_string ("Convert LF to LF (do nothing)"), |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4833 listu (Qdocumentation, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4834 build_defer_string ("Do nothing."), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4835 Qmnemonic, build_ascstring ("LF->LF"), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4836 Qsubtype, Qlf, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4837 /* VERY IMPORTANT! Tell make-coding-system not to generate |
| 771 | 4838 subsidiaries -- it needs the coding systems we're creating |
| 4839 to do so! */ | |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4840 Qeol_type, Qlf, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4841 Qsafe_charsets, Qt, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4842 Qunbound)); |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4843 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4844 Fmake_coding_system_internal |
| 771 | 4845 (Qconvert_eol_crlf, Qconvert_eol, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4846 build_defer_string ("Convert CRLF to LF"), |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4847 listu (Qdocumentation, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4848 build_defer_string ( |
| 771 | 4849 "Converts CR+LF (used to mark the end of a line on Macintosh systems) to LF\n" |
| 4850 "(used internally and under Unix to mark the end of a line)."), | |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4851 Qmnemonic, build_ascstring ("CRLF->LF"), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4852 Qsubtype, Qcrlf, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4853 /* VERY IMPORTANT! Tell make-coding-system not to generate |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4854 subsidiaries -- it needs the coding systems we're creating |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4855 to do so! */ |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4856 Qeol_type, Qlf, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4857 Qsafe_charsets, Qt, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4858 Qunbound)); |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4859 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4860 Fmake_coding_system_internal |
| 771 | 4861 (Qconvert_eol_autodetect, Qconvert_eol, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4862 build_defer_string ("Autodetect EOL type"), |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4863 listu (Qdocumentation, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4864 build_defer_string ("Autodetect the end-of-line type."), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4865 Qmnemonic, build_ascstring ("Auto-EOL"), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4866 Qsubtype, Qnil, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4867 /* VERY IMPORTANT! Tell make-coding-system not to generate |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4868 subsidiaries -- it needs the coding systems we're creating |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4869 to do so! */ |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4870 Qeol_type, Qlf, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4871 Qsafe_charsets, Qt, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4872 Qunbound)); |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4873 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4874 Fmake_coding_system_internal |
| 771 | 4875 (Qundecided, Qundecided, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4876 build_defer_string ("Undecided (auto-detect)"), |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4877 listu (Qdocumentation, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4878 build_defer_string ("Automatically detects the correct encoding."), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4879 Qmnemonic, build_ascstring ("Auto"), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4880 Qdo_eol, Qt, Qdo_coding, Qt, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4881 /* We do EOL detection ourselves so we don't need to be |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4882 wrapped in an EOL detector. (It doesn't actually hurt, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4883 though, I don't think.) */ |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4884 Qeol_type, Qlf, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4885 Qunbound)); |
| 771 | 4886 |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4887 Fmake_coding_system_internal |
| 771 | 4888 (intern ("undecided-dos"), Qundecided, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4889 build_defer_string ("Undecided (auto-detect) (CRLF)"), |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4890 listu (Qdocumentation, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4891 build_defer_string |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4892 ("Automatically detects the correct encoding; EOL type of CRLF forced."), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4893 Qmnemonic, build_ascstring ("Auto"), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4894 Qdo_coding, Qt, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4895 Qeol_type, Qcrlf, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4896 Qunbound)); |
| 771 | 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-unix"), 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) (LF)"), |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4901 listu (Qdocumentation, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4902 build_defer_string |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4903 ("Automatically detects the correct encoding; EOL type of LF forced."), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4904 Qmnemonic, build_ascstring ("Auto"), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4905 Qdo_coding, Qt, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4906 Qeol_type, Qlf, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4907 Qunbound));; |
| 771 | 4908 |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4909 Fmake_coding_system_internal |
| 771 | 4910 (intern ("undecided-mac"), Qundecided, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4911 build_defer_string ("Undecided (auto-detect) (CR)"), |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4912 listu (Qdocumentation, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4913 build_defer_string |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4914 ("Automatically detects the correct encoding; EOL type of CR forced."), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4915 Qmnemonic, build_ascstring ("Auto"), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4916 Qdo_coding, Qt, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4917 Qeol_type, Qcr, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4918 Qunbound)); |
| 771 | 4919 |
| 428 | 4920 /* 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
|
4921 Fmake_coding_system_internal |
| 428 | 4922 (Qraw_text, Qno_conversion, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4923 build_defer_string ("Raw Text"), |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4924 listu (Qdocumentation, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4925 build_defer_string ("Raw text converts only line-break " |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4926 "codes, and acts otherwise like " |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4927 "`binary'."), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4928 Qmnemonic, build_ascstring ("Raw"), |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4929 #ifdef MULE |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4930 Qsafe_charsets, list3 (Vcharset_ascii, Vcharset_control_1, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4931 Vcharset_latin_iso8859_1), |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4932 |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4933 #endif |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4934 Qunbound)); |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4935 |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4936 |
|
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4937 Fmake_coding_system_internal |
| 428 | 4938 (Qbinary, Qno_conversion, |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4846
diff
changeset
|
4939 build_defer_string ("Binary"), |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4940 listu (Qdocumentation, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4941 build_defer_string ( |
| 771 | 4942 "This coding system is as close as it comes to doing no conversion.\n" |
| 4943 "On input, each byte is converted directly into the character\n" | |
| 4944 "with the corresponding code -- i.e. from the `ascii', `control-1',\n" | |
| 4945 "or `latin-1' character sets. On output, these characters are\n" | |
| 4946 "converted back to the corresponding bytes, and other characters\n" | |
| 4947 "are converted to the default character, i.e. `~'."), | |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4948 Qeol_type, Qlf, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4949 Qmnemonic, build_ascstring ("Binary"), |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4950 #ifdef MULE |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4951 Qsafe_charsets, list3 (Vcharset_ascii, Vcharset_control_1, |
|
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4952 Vcharset_latin_iso8859_1), |
|
4690
257b468bf2ca
Move the #'query-coding-region implementation to C.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4647
diff
changeset
|
4953 #endif |
|
5345
db326b8fe982
Use Ben's recently-introduced listu (), where appropriate.
Aidan Kehoe <kehoea@parhasard.net>
parents:
5307
diff
changeset
|
4954 Qunbound)); |
| 428 | 4955 |
| 771 | 4956 /* Formerly aliased to raw-text! Completely bogus and not even the same |
| 4957 as FSF Emacs. */ | |
| 4958 Fdefine_coding_system_alias (Qno_conversion, Qbinary); | |
| 4959 Fdefine_coding_system_alias (intern ("no-conversion-unix"), | |
| 4960 intern ("raw-text-unix")); | |
| 4961 Fdefine_coding_system_alias (intern ("no-conversion-dos"), | |
| 4962 intern ("raw-text-dos")); | |
| 4963 Fdefine_coding_system_alias (intern ("no-conversion-mac"), | |
| 4964 intern ("raw-text-mac")); | |
| 4965 | |
| 1318 | 4966 /* These three below will get their defaults set correctly |
| 4967 in code-init.el. We init them now so we can handle stuff at dump | |
| 771 | 4968 time before we get to code-init.el. */ |
| 1318 | 4969 Fdefine_coding_system_alias (Qnative, Qbinary); |
| 440 | 4970 Fdefine_coding_system_alias (Qterminal, Qbinary); |
| 4971 Fdefine_coding_system_alias (Qkeyboard, Qbinary); | |
| 4972 | |
| 1318 | 4973 Fdefine_coding_system_alias (Qfile_name, Qnative); |
| 771 | 4974 Fdefine_coding_system_alias (Qidentity, Qconvert_eol_lf); |
| 4975 | |
| 428 | 4976 /* Need this for bootstrapping */ |
| 771 | 4977 coding_category_system[detector_category_no_conversion] = |
| 428 | 4978 Fget_coding_system (Qraw_text); |
| 4979 } |