projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 8690e634 JK |
1 | /* Determine a canonical name for the current locale's character encoding. |
| 2 | ||
| 7a6dbc2f | 3 | Copyright (C) 2000-2006, 2008-2018 Free Software Foundation, Inc. |
| 8690e634 JK |
4 | |
| 5 | This program is free software; you can redistribute it and/or modify | |
| 6 | it under the terms of the GNU General Public License as published by | |
| 7 | the Free Software Foundation; either version 3, or (at your option) | |
| 8 | any later version. | |
| 9 | ||
| 10 | This program is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | GNU General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU General Public License along | |
| 7a6dbc2f | 16 | with this program; if not, see <https://www.gnu.org/licenses/>. */ |
| 8690e634 JK |
17 | |
| 18 | /* Written by Bruno Haible <bruno@clisp.org>. */ | |
| 19 | ||
| 20 | #include <config.h> | |
| 21 | ||
| 22 | /* Specification. */ | |
| 23 | #include "localcharset.h" | |
| 24 | ||
| 8690e634 JK |
25 | #include <stddef.h> |
| 26 | #include <stdio.h> | |
| 27 | #include <string.h> | |
| 28 | #include <stdlib.h> | |
| 29 | ||
| 30 | #if defined __APPLE__ && defined __MACH__ && HAVE_LANGINFO_CODESET | |
| 31 | # define DARWIN7 /* Darwin 7 or newer, i.e. Mac OS X 10.3 or newer */ | |
| 32 | #endif | |
| 33 | ||
| 7a6dbc2f | 34 | #if defined _WIN32 && !defined __CYGWIN__ |
| 8690e634 | 35 | # define WINDOWS_NATIVE |
| 4a626d0a | 36 | # include <locale.h> |
| 8690e634 JK |
37 | #endif |
| 38 | ||
| 39 | #if defined __EMX__ | |
| 40 | /* Assume EMX program runs on OS/2, even if compiled under DOS. */ | |
| 41 | # ifndef OS2 | |
| 42 | # define OS2 | |
| 43 | # endif | |
| 44 | #endif | |
| 45 | ||
| 46 | #if !defined WINDOWS_NATIVE | |
| 8690e634 JK |
47 | # if HAVE_LANGINFO_CODESET |
| 48 | # include <langinfo.h> | |
| 49 | # else | |
| 7a6dbc2f | 50 | # if 0 /* see comment regarding use of setlocale(), below */ |
| 8690e634 JK |
51 | # include <locale.h> |
| 52 | # endif | |
| 53 | # endif | |
| 54 | # ifdef __CYGWIN__ | |
| 55 | # define WIN32_LEAN_AND_MEAN | |
| 56 | # include <windows.h> | |
| 57 | # endif | |
| 58 | #elif defined WINDOWS_NATIVE | |
| 59 | # define WIN32_LEAN_AND_MEAN | |
| 60 | # include <windows.h> | |
| 61 | #endif | |
| 62 | #if defined OS2 | |
| 63 | # define INCL_DOS | |
| 64 | # include <os2.h> | |
| 65 | #endif | |
| 66 | ||
| 4a626d0a PA |
67 | /* For MB_CUR_MAX_L */ |
| 68 | #if defined DARWIN7 | |
| 69 | # include <xlocale.h> | |
| 70 | #endif | |
| 71 | ||
| 8690e634 | 72 | |
| 7a6dbc2f | 73 | #if HAVE_LANGINFO_CODESET || defined WINDOWS_NATIVE || defined OS2 |
| 8690e634 | 74 | |
| 7a6dbc2f SDJ |
75 | /* On these platforms, we use a mapping from non-canonical encoding name |
| 76 | to GNU canonical encoding name. */ | |
| 8690e634 | 77 | |
| 7a6dbc2f SDJ |
78 | /* With glibc-2.1 or newer, we don't need any canonicalization, |
| 79 | because glibc has iconv and both glibc and libiconv support all | |
| 80 | GNU canonical names directly. */ | |
| 81 | # if !((defined __GNU_LIBRARY__ && __GLIBC__ >= 2) || defined __UCLIBC__) | |
| 8690e634 | 82 | |
| 7a6dbc2f | 83 | struct table_entry |
| 8690e634 | 84 | { |
| 7a6dbc2f SDJ |
85 | const char alias[11+1]; |
| 86 | const char canonical[11+1]; | |
| 87 | }; | |
| 88 | ||
| 89 | /* Table of platform-dependent mappings, sorted in ascending order. */ | |
| 90 | static const struct table_entry alias_table[] = | |
| 91 | { | |
| 92 | # if defined __FreeBSD__ /* FreeBSD */ | |
| 93 | /*{ "ARMSCII-8", "ARMSCII-8" },*/ | |
| 94 | { "Big5", "BIG5" }, | |
| 95 | { "C", "ASCII" }, | |
| 96 | /*{ "CP1131", "CP1131" },*/ | |
| 97 | /*{ "CP1251", "CP1251" },*/ | |
| 98 | /*{ "CP866", "CP866" },*/ | |
| 99 | /*{ "GB18030", "GB18030" },*/ | |
| 100 | /*{ "GB2312", "GB2312" },*/ | |
| 101 | /*{ "GBK", "GBK" },*/ | |
| 102 | /*{ "ISCII-DEV", "?" },*/ | |
| 103 | { "ISO8859-1", "ISO-8859-1" }, | |
| 104 | { "ISO8859-13", "ISO-8859-13" }, | |
| 105 | { "ISO8859-15", "ISO-8859-15" }, | |
| 106 | { "ISO8859-2", "ISO-8859-2" }, | |
| 107 | { "ISO8859-5", "ISO-8859-5" }, | |
| 108 | { "ISO8859-7", "ISO-8859-7" }, | |
| 109 | { "ISO8859-9", "ISO-8859-9" }, | |
| 110 | /*{ "KOI8-R", "KOI8-R" },*/ | |
| 111 | /*{ "KOI8-U", "KOI8-U" },*/ | |
| 112 | { "SJIS", "SHIFT_JIS" }, | |
| 113 | { "US-ASCII", "ASCII" }, | |
| 114 | { "eucCN", "GB2312" }, | |
| 115 | { "eucJP", "EUC-JP" }, | |
| 116 | { "eucKR", "EUC-KR" } | |
| 117 | # define alias_table_defined | |
| 118 | # endif | |
| 119 | # if defined __NetBSD__ /* NetBSD */ | |
| 120 | { "646", "ASCII" }, | |
| 121 | /*{ "ARMSCII-8", "ARMSCII-8" },*/ | |
| 122 | /*{ "BIG5", "BIG5" },*/ | |
| 123 | { "Big5-HKSCS", "BIG5-HKSCS" }, | |
| 124 | /*{ "CP1251", "CP1251" },*/ | |
| 125 | /*{ "CP866", "CP866" },*/ | |
| 126 | /*{ "GB18030", "GB18030" },*/ | |
| 127 | /*{ "GB2312", "GB2312" },*/ | |
| 128 | { "ISO8859-1", "ISO-8859-1" }, | |
| 129 | { "ISO8859-13", "ISO-8859-13" }, | |
| 130 | { "ISO8859-15", "ISO-8859-15" }, | |
| 131 | { "ISO8859-2", "ISO-8859-2" }, | |
| 132 | { "ISO8859-4", "ISO-8859-4" }, | |
| 133 | { "ISO8859-5", "ISO-8859-5" }, | |
| 134 | { "ISO8859-7", "ISO-8859-7" }, | |
| 135 | /*{ "KOI8-R", "KOI8-R" },*/ | |
| 136 | /*{ "KOI8-U", "KOI8-U" },*/ | |
| 137 | /*{ "PT154", "PT154" },*/ | |
| 138 | { "SJIS", "SHIFT_JIS" }, | |
| 139 | { "eucCN", "GB2312" }, | |
| 140 | { "eucJP", "EUC-JP" }, | |
| 141 | { "eucKR", "EUC-KR" }, | |
| 142 | { "eucTW", "EUC-TW" } | |
| 143 | # define alias_table_defined | |
| 144 | # endif | |
| 145 | # if defined __OpenBSD__ /* OpenBSD */ | |
| 146 | { "646", "ASCII" }, | |
| 147 | { "ISO8859-1", "ISO-8859-1" }, | |
| 148 | { "ISO8859-13", "ISO-8859-13" }, | |
| 149 | { "ISO8859-15", "ISO-8859-15" }, | |
| 150 | { "ISO8859-2", "ISO-8859-2" }, | |
| 151 | { "ISO8859-4", "ISO-8859-4" }, | |
| 152 | { "ISO8859-5", "ISO-8859-5" }, | |
| 153 | { "ISO8859-7", "ISO-8859-7" } | |
| 154 | # define alias_table_defined | |
| 155 | # endif | |
| 156 | # if defined __APPLE__ && defined __MACH__ /* Mac OS X */ | |
| 157 | /* Darwin 7.5 has nl_langinfo(CODESET), but sometimes its value is | |
| 158 | useless: | |
| 159 | - It returns the empty string when LANG is set to a locale of the | |
| 160 | form ll_CC, although ll_CC/LC_CTYPE is a symlink to an UTF-8 | |
| 161 | LC_CTYPE file. | |
| 162 | - The environment variables LANG, LC_CTYPE, LC_ALL are not set by | |
| 163 | the system; nl_langinfo(CODESET) returns "US-ASCII" in this case. | |
| 164 | - The documentation says: | |
| 165 | "... all code that calls BSD system routines should ensure | |
| 166 | that the const *char parameters of these routines are in UTF-8 | |
| 167 | encoding. All BSD system functions expect their string | |
| 168 | parameters to be in UTF-8 encoding and nothing else." | |
| 169 | It also says | |
| 170 | "An additional caveat is that string parameters for files, | |
| 171 | paths, and other file-system entities must be in canonical | |
| 172 | UTF-8. In a canonical UTF-8 Unicode string, all decomposable | |
| 173 | characters are decomposed ..." | |
| 174 | but this is not true: You can pass non-decomposed UTF-8 strings | |
| 175 | to file system functions, and it is the OS which will convert | |
| 176 | them to decomposed UTF-8 before accessing the file system. | |
| 177 | - The Apple Terminal application displays UTF-8 by default. | |
| 178 | - However, other applications are free to use different encodings: | |
| 179 | - xterm uses ISO-8859-1 by default. | |
| 180 | - TextEdit uses MacRoman by default. | |
| 181 | We prefer UTF-8 over decomposed UTF-8-MAC because one should | |
| 182 | minimize the use of decomposed Unicode. Unfortunately, through the | |
| 183 | Darwin file system, decomposed UTF-8 strings are leaked into user | |
| 184 | space nevertheless. | |
| 185 | Then there are also the locales with encodings other than US-ASCII | |
| 186 | and UTF-8. These locales can be occasionally useful to users (e.g. | |
| 187 | when grepping through ISO-8859-1 encoded text files), when all their | |
| 188 | file names are in US-ASCII. | |
| 189 | */ | |
| 190 | { "ARMSCII-8", "ARMSCII-8" }, | |
| 191 | { "Big5", "BIG5" }, | |
| 192 | { "Big5HKSCS", "BIG5-HKSCS" }, | |
| 193 | { "CP1131", "CP1131" }, | |
| 194 | { "CP1251", "CP1251" }, | |
| 195 | { "CP866", "CP866" }, | |
| 196 | { "CP949", "CP949" }, | |
| 197 | { "GB18030", "GB18030" }, | |
| 198 | { "GB2312", "GB2312" }, | |
| 199 | { "GBK", "GBK" }, | |
| 200 | /*{ "ISCII-DEV", "?" },*/ | |
| 201 | { "ISO8859-1", "ISO-8859-1" }, | |
| 202 | { "ISO8859-13", "ISO-8859-13" }, | |
| 203 | { "ISO8859-15", "ISO-8859-15" }, | |
| 204 | { "ISO8859-2", "ISO-8859-2" }, | |
| 205 | { "ISO8859-4", "ISO-8859-4" }, | |
| 206 | { "ISO8859-5", "ISO-8859-5" }, | |
| 207 | { "ISO8859-7", "ISO-8859-7" }, | |
| 208 | { "ISO8859-9", "ISO-8859-9" }, | |
| 209 | { "KOI8-R", "KOI8-R" }, | |
| 210 | { "KOI8-U", "KOI8-U" }, | |
| 211 | { "PT154", "PT154" }, | |
| 212 | { "SJIS", "SHIFT_JIS" }, | |
| 213 | { "eucCN", "GB2312" }, | |
| 214 | { "eucJP", "EUC-JP" }, | |
| 215 | { "eucKR", "EUC-KR" } | |
| 216 | # define alias_table_defined | |
| 217 | # endif | |
| 218 | # if defined _AIX /* AIX */ | |
| 219 | /*{ "GBK", "GBK" },*/ | |
| 220 | { "IBM-1046", "CP1046" }, | |
| 221 | { "IBM-1124", "CP1124" }, | |
| 222 | { "IBM-1129", "CP1129" }, | |
| 223 | { "IBM-1252", "CP1252" }, | |
| 224 | { "IBM-850", "CP850" }, | |
| 225 | { "IBM-856", "CP856" }, | |
| 226 | { "IBM-921", "ISO-8859-13" }, | |
| 227 | { "IBM-922", "CP922" }, | |
| 228 | { "IBM-932", "CP932" }, | |
| 229 | { "IBM-943", "CP943" }, | |
| 230 | { "IBM-eucCN", "GB2312" }, | |
| 231 | { "IBM-eucJP", "EUC-JP" }, | |
| 232 | { "IBM-eucKR", "EUC-KR" }, | |
| 233 | { "IBM-eucTW", "EUC-TW" }, | |
| 234 | { "ISO8859-1", "ISO-8859-1" }, | |
| 235 | { "ISO8859-15", "ISO-8859-15" }, | |
| 236 | { "ISO8859-2", "ISO-8859-2" }, | |
| 237 | { "ISO8859-5", "ISO-8859-5" }, | |
| 238 | { "ISO8859-6", "ISO-8859-6" }, | |
| 239 | { "ISO8859-7", "ISO-8859-7" }, | |
| 240 | { "ISO8859-8", "ISO-8859-8" }, | |
| 241 | { "ISO8859-9", "ISO-8859-9" }, | |
| 242 | { "TIS-620", "TIS-620" }, | |
| 243 | /*{ "UTF-8", "UTF-8" },*/ | |
| 244 | { "big5", "BIG5" } | |
| 245 | # define alias_table_defined | |
| 246 | # endif | |
| 247 | # if defined __hpux /* HP-UX */ | |
| 248 | { "SJIS", "SHIFT_JIS" }, | |
| 249 | { "arabic8", "HP-ARABIC8" }, | |
| 250 | { "big5", "BIG5" }, | |
| 251 | { "cp1251", "CP1251" }, | |
| 252 | { "eucJP", "EUC-JP" }, | |
| 253 | { "eucKR", "EUC-KR" }, | |
| 254 | { "eucTW", "EUC-TW" }, | |
| 255 | { "gb18030", "GB18030" }, | |
| 256 | { "greek8", "HP-GREEK8" }, | |
| 257 | { "hebrew8", "HP-HEBREW8" }, | |
| 258 | { "hkbig5", "BIG5-HKSCS" }, | |
| 259 | { "hp15CN", "GB2312" }, | |
| 260 | { "iso88591", "ISO-8859-1" }, | |
| 261 | { "iso885913", "ISO-8859-13" }, | |
| 262 | { "iso885915", "ISO-8859-15" }, | |
| 263 | { "iso88592", "ISO-8859-2" }, | |
| 264 | { "iso88594", "ISO-8859-4" }, | |
| 265 | { "iso88595", "ISO-8859-5" }, | |
| 266 | { "iso88596", "ISO-8859-6" }, | |
| 267 | { "iso88597", "ISO-8859-7" }, | |
| 268 | { "iso88598", "ISO-8859-8" }, | |
| 269 | { "iso88599", "ISO-8859-9" }, | |
| 270 | { "kana8", "HP-KANA8" }, | |
| 271 | { "koi8r", "KOI8-R" }, | |
| 272 | { "roman8", "HP-ROMAN8" }, | |
| 273 | { "tis620", "TIS-620" }, | |
| 274 | { "turkish8", "HP-TURKISH8" }, | |
| 275 | { "utf8", "UTF-8" } | |
| 276 | # define alias_table_defined | |
| 277 | # endif | |
| 278 | # if defined __sgi /* IRIX */ | |
| 279 | { "ISO8859-1", "ISO-8859-1" }, | |
| 280 | { "ISO8859-15", "ISO-8859-15" }, | |
| 281 | { "ISO8859-2", "ISO-8859-2" }, | |
| 282 | { "ISO8859-5", "ISO-8859-5" }, | |
| 283 | { "ISO8859-7", "ISO-8859-7" }, | |
| 284 | { "ISO8859-9", "ISO-8859-9" }, | |
| 285 | { "eucCN", "GB2312" }, | |
| 286 | { "eucJP", "EUC-JP" }, | |
| 287 | { "eucKR", "EUC-KR" }, | |
| 288 | { "eucTW", "EUC-TW" } | |
| 289 | # define alias_table_defined | |
| 290 | # endif | |
| 291 | # if defined __osf__ /* OSF/1 */ | |
| 292 | /*{ "GBK", "GBK" },*/ | |
| 293 | { "ISO8859-1", "ISO-8859-1" }, | |
| 294 | { "ISO8859-15", "ISO-8859-15" }, | |
| 295 | { "ISO8859-2", "ISO-8859-2" }, | |
| 296 | { "ISO8859-4", "ISO-8859-4" }, | |
| 297 | { "ISO8859-5", "ISO-8859-5" }, | |
| 298 | { "ISO8859-7", "ISO-8859-7" }, | |
| 299 | { "ISO8859-8", "ISO-8859-8" }, | |
| 300 | { "ISO8859-9", "ISO-8859-9" }, | |
| 301 | { "KSC5601", "CP949" }, | |
| 302 | { "SJIS", "SHIFT_JIS" }, | |
| 303 | { "TACTIS", "TIS-620" }, | |
| 304 | /*{ "UTF-8", "UTF-8" },*/ | |
| 305 | { "big5", "BIG5" }, | |
| 306 | { "cp850", "CP850" }, | |
| 307 | { "dechanyu", "DEC-HANYU" }, | |
| 308 | { "dechanzi", "GB2312" }, | |
| 309 | { "deckanji", "DEC-KANJI" }, | |
| 310 | { "deckorean", "EUC-KR" }, | |
| 311 | { "eucJP", "EUC-JP" }, | |
| 312 | { "eucKR", "EUC-KR" }, | |
| 313 | { "eucTW", "EUC-TW" }, | |
| 314 | { "sdeckanji", "EUC-JP" } | |
| 315 | # define alias_table_defined | |
| 316 | # endif | |
| 317 | # if defined __sun /* Solaris */ | |
| 318 | { "5601", "EUC-KR" }, | |
| 319 | { "646", "ASCII" }, | |
| 320 | /*{ "BIG5", "BIG5" },*/ | |
| 321 | { "Big5-HKSCS", "BIG5-HKSCS" }, | |
| 322 | { "GB18030", "GB18030" }, | |
| 323 | /*{ "GBK", "GBK" },*/ | |
| 324 | { "ISO8859-1", "ISO-8859-1" }, | |
| 325 | { "ISO8859-11", "TIS-620" }, | |
| 326 | { "ISO8859-13", "ISO-8859-13" }, | |
| 327 | { "ISO8859-15", "ISO-8859-15" }, | |
| 328 | { "ISO8859-2", "ISO-8859-2" }, | |
| 329 | { "ISO8859-3", "ISO-8859-3" }, | |
| 330 | { "ISO8859-4", "ISO-8859-4" }, | |
| 331 | { "ISO8859-5", "ISO-8859-5" }, | |
| 332 | { "ISO8859-6", "ISO-8859-6" }, | |
| 333 | { "ISO8859-7", "ISO-8859-7" }, | |
| 334 | { "ISO8859-8", "ISO-8859-8" }, | |
| 335 | { "ISO8859-9", "ISO-8859-9" }, | |
| 336 | { "PCK", "SHIFT_JIS" }, | |
| 337 | { "TIS620.2533", "TIS-620" }, | |
| 338 | /*{ "UTF-8", "UTF-8" },*/ | |
| 339 | { "ansi-1251", "CP1251" }, | |
| 340 | { "cns11643", "EUC-TW" }, | |
| 341 | { "eucJP", "EUC-JP" }, | |
| 342 | { "gb2312", "GB2312" }, | |
| 343 | { "koi8-r", "KOI8-R" } | |
| 344 | # define alias_table_defined | |
| 345 | # endif | |
| 346 | # if defined __minix /* Minix */ | |
| 347 | { "646", "ASCII" } | |
| 348 | # define alias_table_defined | |
| 349 | # endif | |
| 350 | # if defined WINDOWS_NATIVE || defined __CYGWIN__ /* Windows */ | |
| 351 | { "CP1361", "JOHAB" }, | |
| 352 | { "CP20127", "ASCII" }, | |
| 353 | { "CP20866", "KOI8-R" }, | |
| 354 | { "CP20936", "GB2312" }, | |
| 355 | { "CP21866", "KOI8-RU" }, | |
| 356 | { "CP28591", "ISO-8859-1" }, | |
| 357 | { "CP28592", "ISO-8859-2" }, | |
| 358 | { "CP28593", "ISO-8859-3" }, | |
| 359 | { "CP28594", "ISO-8859-4" }, | |
| 360 | { "CP28595", "ISO-8859-5" }, | |
| 361 | { "CP28596", "ISO-8859-6" }, | |
| 362 | { "CP28597", "ISO-8859-7" }, | |
| 363 | { "CP28598", "ISO-8859-8" }, | |
| 364 | { "CP28599", "ISO-8859-9" }, | |
| 365 | { "CP28605", "ISO-8859-15" }, | |
| 366 | { "CP38598", "ISO-8859-8" }, | |
| 367 | { "CP51932", "EUC-JP" }, | |
| 368 | { "CP51936", "GB2312" }, | |
| 369 | { "CP51949", "EUC-KR" }, | |
| 370 | { "CP51950", "EUC-TW" }, | |
| 371 | { "CP54936", "GB18030" }, | |
| 372 | { "CP65001", "UTF-8" }, | |
| 373 | { "CP936", "GBK" } | |
| 374 | # define alias_table_defined | |
| 375 | # endif | |
| 376 | # if defined OS2 /* OS/2 */ | |
| 377 | /* The list of encodings is taken from "List of OS/2 Codepages" | |
| 378 | by Alex Taylor: | |
| 379 | <http://altsan.org/os2/toolkits/uls/index.html#codepages>. | |
| 380 | See also "IBM Globalization - Code page identifiers": | |
| 381 | <https://www-01.ibm.com/software/globalization/cp/cp_cpgid.html>. */ | |
| 382 | { "CP1089", "ISO-8859-6" }, | |
| 383 | { "CP1208", "UTF-8" }, | |
| 384 | { "CP1381", "GB2312" }, | |
| 385 | { "CP1386", "GBK" }, | |
| 386 | { "CP3372", "EUC-JP" }, | |
| 387 | { "CP813", "ISO-8859-7" }, | |
| 388 | { "CP819", "ISO-8859-1" }, | |
| 389 | { "CP878", "KOI8-R" }, | |
| 390 | { "CP912", "ISO-8859-2" }, | |
| 391 | { "CP913", "ISO-8859-3" }, | |
| 392 | { "CP914", "ISO-8859-4" }, | |
| 393 | { "CP915", "ISO-8859-5" }, | |
| 394 | { "CP916", "ISO-8859-8" }, | |
| 395 | { "CP920", "ISO-8859-9" }, | |
| 396 | { "CP921", "ISO-8859-13" }, | |
| 397 | { "CP923", "ISO-8859-15" }, | |
| 398 | { "CP954", "EUC-JP" }, | |
| 399 | { "CP964", "EUC-TW" }, | |
| 400 | { "CP970", "EUC-KR" } | |
| 401 | # define alias_table_defined | |
| 402 | # endif | |
| 403 | # if defined VMS /* OpenVMS */ | |
| 404 | /* The list of encodings is taken from the OpenVMS 7.3-1 documentation | |
| 405 | "Compaq C Run-Time Library Reference Manual for OpenVMS systems" | |
| 406 | section 10.7 "Handling Different Character Sets". */ | |
| 407 | { "DECHANYU", "DEC-HANYU" }, | |
| 408 | { "DECHANZI", "GB2312" }, | |
| 409 | { "DECKANJI", "DEC-KANJI" }, | |
| 410 | { "DECKOREAN", "EUC-KR" }, | |
| 411 | { "ISO8859-1", "ISO-8859-1" }, | |
| 412 | { "ISO8859-2", "ISO-8859-2" }, | |
| 413 | { "ISO8859-5", "ISO-8859-5" }, | |
| 414 | { "ISO8859-7", "ISO-8859-7" }, | |
| 415 | { "ISO8859-8", "ISO-8859-8" }, | |
| 416 | { "ISO8859-9", "ISO-8859-9" }, | |
| 417 | { "SDECKANJI", "EUC-JP" }, | |
| 418 | { "SJIS", "SHIFT_JIS" }, | |
| 419 | { "eucJP", "EUC-JP" }, | |
| 420 | { "eucTW", "EUC-TW" } | |
| 421 | # define alias_table_defined | |
| 422 | # endif | |
| 423 | # ifndef alias_table_defined | |
| 424 | /* Just a dummy entry, to avoid a C syntax error. */ | |
| 425 | { "", "" } | |
| 426 | # endif | |
| 427 | }; | |
| 8690e634 | 428 | |
| 7a6dbc2f | 429 | # endif |
| 8690e634 JK |
430 | |
| 431 | #else | |
| 432 | ||
| 7a6dbc2f SDJ |
433 | /* On these platforms, we use a mapping from locale name to GNU canonical |
| 434 | encoding name. */ | |
| 8690e634 | 435 | |
| 7a6dbc2f SDJ |
436 | struct table_entry |
| 437 | { | |
| 438 | const char locale[17+1]; | |
| 439 | const char canonical[11+1]; | |
| 440 | }; | |
| 441 | ||
| 442 | /* Table of platform-dependent mappings, sorted in ascending order. */ | |
| 443 | static const struct table_entry locale_table[] = | |
| 444 | { | |
| 445 | # if defined __FreeBSD__ /* FreeBSD 4.2 */ | |
| 446 | { "cs_CZ.ISO_8859-2", "ISO-8859-2" }, | |
| 447 | { "da_DK.DIS_8859-15", "ISO-8859-15" }, | |
| 448 | { "da_DK.ISO_8859-1", "ISO-8859-1" }, | |
| 449 | { "de_AT.DIS_8859-15", "ISO-8859-15" }, | |
| 450 | { "de_AT.ISO_8859-1", "ISO-8859-1" }, | |
| 451 | { "de_CH.DIS_8859-15", "ISO-8859-15" }, | |
| 452 | { "de_CH.ISO_8859-1", "ISO-8859-1" }, | |
| 453 | { "de_DE.DIS_8859-15", "ISO-8859-15" }, | |
| 454 | { "de_DE.ISO_8859-1", "ISO-8859-1" }, | |
| 455 | { "en_AU.DIS_8859-15", "ISO-8859-15" }, | |
| 456 | { "en_AU.ISO_8859-1", "ISO-8859-1" }, | |
| 457 | { "en_CA.DIS_8859-15", "ISO-8859-15" }, | |
| 458 | { "en_CA.ISO_8859-1", "ISO-8859-1" }, | |
| 459 | { "en_GB.DIS_8859-15", "ISO-8859-15" }, | |
| 460 | { "en_GB.ISO_8859-1", "ISO-8859-1" }, | |
| 461 | { "en_US.DIS_8859-15", "ISO-8859-15" }, | |
| 462 | { "en_US.ISO_8859-1", "ISO-8859-1" }, | |
| 463 | { "es_ES.DIS_8859-15", "ISO-8859-15" }, | |
| 464 | { "es_ES.ISO_8859-1", "ISO-8859-1" }, | |
| 465 | { "fi_FI.DIS_8859-15", "ISO-8859-15" }, | |
| 466 | { "fi_FI.ISO_8859-1", "ISO-8859-1" }, | |
| 467 | { "fr_BE.DIS_8859-15", "ISO-8859-15" }, | |
| 468 | { "fr_BE.ISO_8859-1", "ISO-8859-1" }, | |
| 469 | { "fr_CA.DIS_8859-15", "ISO-8859-15" }, | |
| 470 | { "fr_CA.ISO_8859-1", "ISO-8859-1" }, | |
| 471 | { "fr_CH.DIS_8859-15", "ISO-8859-15" }, | |
| 472 | { "fr_CH.ISO_8859-1", "ISO-8859-1" }, | |
| 473 | { "fr_FR.DIS_8859-15", "ISO-8859-15" }, | |
| 474 | { "fr_FR.ISO_8859-1", "ISO-8859-1" }, | |
| 475 | { "hr_HR.ISO_8859-2", "ISO-8859-2" }, | |
| 476 | { "hu_HU.ISO_8859-2", "ISO-8859-2" }, | |
| 477 | { "is_IS.DIS_8859-15", "ISO-8859-15" }, | |
| 478 | { "is_IS.ISO_8859-1", "ISO-8859-1" }, | |
| 479 | { "it_CH.DIS_8859-15", "ISO-8859-15" }, | |
| 480 | { "it_CH.ISO_8859-1", "ISO-8859-1" }, | |
| 481 | { "it_IT.DIS_8859-15", "ISO-8859-15" }, | |
| 482 | { "it_IT.ISO_8859-1", "ISO-8859-1" }, | |
| 483 | { "ja_JP.EUC", "EUC-JP" }, | |
| 484 | { "ja_JP.SJIS", "SHIFT_JIS" }, | |
| 485 | { "ja_JP.Shift_JIS", "SHIFT_JIS" }, | |
| 486 | { "ko_KR.EUC", "EUC-KR" }, | |
| 487 | { "la_LN.ASCII", "ASCII" }, | |
| 488 | { "la_LN.DIS_8859-15", "ISO-8859-15" }, | |
| 489 | { "la_LN.ISO_8859-1", "ISO-8859-1" }, | |
| 490 | { "la_LN.ISO_8859-2", "ISO-8859-2" }, | |
| 491 | { "la_LN.ISO_8859-4", "ISO-8859-4" }, | |
| 492 | { "lt_LN.ASCII", "ASCII" }, | |
| 493 | { "lt_LN.DIS_8859-15", "ISO-8859-15" }, | |
| 494 | { "lt_LN.ISO_8859-1", "ISO-8859-1" }, | |
| 495 | { "lt_LN.ISO_8859-2", "ISO-8859-2" }, | |
| 496 | { "lt_LT.ISO_8859-4", "ISO-8859-4" }, | |
| 497 | { "nl_BE.DIS_8859-15", "ISO-8859-15" }, | |
| 498 | { "nl_BE.ISO_8859-1", "ISO-8859-1" }, | |
| 499 | { "nl_NL.DIS_8859-15", "ISO-8859-15" }, | |
| 500 | { "nl_NL.ISO_8859-1", "ISO-8859-1" }, | |
| 501 | { "no_NO.DIS_8859-15", "ISO-8859-15" }, | |
| 502 | { "no_NO.ISO_8859-1", "ISO-8859-1" }, | |
| 503 | { "pl_PL.ISO_8859-2", "ISO-8859-2" }, | |
| 504 | { "pt_PT.DIS_8859-15", "ISO-8859-15" }, | |
| 505 | { "pt_PT.ISO_8859-1", "ISO-8859-1" }, | |
| 506 | { "ru_RU.CP866", "CP866" }, | |
| 507 | { "ru_RU.ISO_8859-5", "ISO-8859-5" }, | |
| 508 | { "ru_RU.KOI8-R", "KOI8-R" }, | |
| 509 | { "ru_SU.CP866", "CP866" }, | |
| 510 | { "ru_SU.ISO_8859-5", "ISO-8859-5" }, | |
| 511 | { "ru_SU.KOI8-R", "KOI8-R" }, | |
| 512 | { "sl_SI.ISO_8859-2", "ISO-8859-2" }, | |
| 513 | { "sv_SE.DIS_8859-15", "ISO-8859-15" }, | |
| 514 | { "sv_SE.ISO_8859-1", "ISO-8859-1" }, | |
| 515 | { "uk_UA.KOI8-U", "KOI8-U" }, | |
| 516 | { "zh_CN.EUC", "GB2312" }, | |
| 517 | { "zh_TW.BIG5", "BIG5" }, | |
| 518 | { "zh_TW.Big5", "BIG5" } | |
| 519 | # define locale_table_defined | |
| 8690e634 | 520 | # endif |
| 7a6dbc2f SDJ |
521 | # if defined __DJGPP__ /* DOS / DJGPP 2.03 */ |
| 522 | /* The encodings given here may not all be correct. | |
| 523 | If you find that the encoding given for your language and | |
| 524 | country is not the one your DOS machine actually uses, just | |
| 525 | correct it in this file, and send a mail to | |
| 526 | Juan Manuel Guerrero <juan.guerrero@gmx.de> | |
| 527 | and <bug-gnulib@gnu.org>. */ | |
| 528 | { "C", "ASCII" }, | |
| 529 | { "ar", "CP864" }, | |
| 530 | { "ar_AE", "CP864" }, | |
| 531 | { "ar_DZ", "CP864" }, | |
| 532 | { "ar_EG", "CP864" }, | |
| 533 | { "ar_IQ", "CP864" }, | |
| 534 | { "ar_IR", "CP864" }, | |
| 535 | { "ar_JO", "CP864" }, | |
| 536 | { "ar_KW", "CP864" }, | |
| 537 | { "ar_MA", "CP864" }, | |
| 538 | { "ar_OM", "CP864" }, | |
| 539 | { "ar_QA", "CP864" }, | |
| 540 | { "ar_SA", "CP864" }, | |
| 541 | { "ar_SY", "CP864" }, | |
| 542 | { "be", "CP866" }, | |
| 543 | { "be_BE", "CP866" }, | |
| 544 | { "bg", "CP866" }, /* not CP855 ?? */ | |
| 545 | { "bg_BG", "CP866" }, /* not CP855 ?? */ | |
| 546 | { "ca", "CP850" }, | |
| 547 | { "ca_ES", "CP850" }, | |
| 548 | { "cs", "CP852" }, | |
| 549 | { "cs_CZ", "CP852" }, | |
| 550 | { "da", "CP865" }, /* not CP850 ?? */ | |
| 551 | { "da_DK", "CP865" }, /* not CP850 ?? */ | |
| 552 | { "de", "CP850" }, | |
| 553 | { "de_AT", "CP850" }, | |
| 554 | { "de_CH", "CP850" }, | |
| 555 | { "de_DE", "CP850" }, | |
| 556 | { "el", "CP869" }, | |
| 557 | { "el_GR", "CP869" }, | |
| 558 | { "en", "CP850" }, | |
| 559 | { "en_AU", "CP850" }, /* not CP437 ?? */ | |
| 560 | { "en_CA", "CP850" }, | |
| 561 | { "en_GB", "CP850" }, | |
| 562 | { "en_NZ", "CP437" }, | |
| 563 | { "en_US", "CP437" }, | |
| 564 | { "en_ZA", "CP850" }, /* not CP437 ?? */ | |
| 565 | { "eo", "CP850" }, | |
| 566 | { "eo_EO", "CP850" }, | |
| 567 | { "es", "CP850" }, | |
| 568 | { "es_AR", "CP850" }, | |
| 569 | { "es_BO", "CP850" }, | |
| 570 | { "es_CL", "CP850" }, | |
| 571 | { "es_CO", "CP850" }, | |
| 572 | { "es_CR", "CP850" }, | |
| 573 | { "es_CU", "CP850" }, | |
| 574 | { "es_DO", "CP850" }, | |
| 575 | { "es_EC", "CP850" }, | |
| 576 | { "es_ES", "CP850" }, | |
| 577 | { "es_GT", "CP850" }, | |
| 578 | { "es_HN", "CP850" }, | |
| 579 | { "es_MX", "CP850" }, | |
| 580 | { "es_NI", "CP850" }, | |
| 581 | { "es_PA", "CP850" }, | |
| 582 | { "es_PE", "CP850" }, | |
| 583 | { "es_PY", "CP850" }, | |
| 584 | { "es_SV", "CP850" }, | |
| 585 | { "es_UY", "CP850" }, | |
| 586 | { "es_VE", "CP850" }, | |
| 587 | { "et", "CP850" }, | |
| 588 | { "et_EE", "CP850" }, | |
| 589 | { "eu", "CP850" }, | |
| 590 | { "eu_ES", "CP850" }, | |
| 591 | { "fi", "CP850" }, | |
| 592 | { "fi_FI", "CP850" }, | |
| 593 | { "fr", "CP850" }, | |
| 594 | { "fr_BE", "CP850" }, | |
| 595 | { "fr_CA", "CP850" }, | |
| 596 | { "fr_CH", "CP850" }, | |
| 597 | { "fr_FR", "CP850" }, | |
| 598 | { "ga", "CP850" }, | |
| 599 | { "ga_IE", "CP850" }, | |
| 600 | { "gd", "CP850" }, | |
| 601 | { "gd_GB", "CP850" }, | |
| 602 | { "gl", "CP850" }, | |
| 603 | { "gl_ES", "CP850" }, | |
| 604 | { "he", "CP862" }, | |
| 605 | { "he_IL", "CP862" }, | |
| 606 | { "hr", "CP852" }, | |
| 607 | { "hr_HR", "CP852" }, | |
| 608 | { "hu", "CP852" }, | |
| 609 | { "hu_HU", "CP852" }, | |
| 610 | { "id", "CP850" }, /* not CP437 ?? */ | |
| 611 | { "id_ID", "CP850" }, /* not CP437 ?? */ | |
| 612 | { "is", "CP861" }, /* not CP850 ?? */ | |
| 613 | { "is_IS", "CP861" }, /* not CP850 ?? */ | |
| 614 | { "it", "CP850" }, | |
| 615 | { "it_CH", "CP850" }, | |
| 616 | { "it_IT", "CP850" }, | |
| 617 | { "ja", "CP932" }, | |
| 618 | { "ja_JP", "CP932" }, | |
| 619 | { "kr", "CP949" }, /* not CP934 ?? */ | |
| 620 | { "kr_KR", "CP949" }, /* not CP934 ?? */ | |
| 621 | { "lt", "CP775" }, | |
| 622 | { "lt_LT", "CP775" }, | |
| 623 | { "lv", "CP775" }, | |
| 624 | { "lv_LV", "CP775" }, | |
| 625 | { "mk", "CP866" }, /* not CP855 ?? */ | |
| 626 | { "mk_MK", "CP866" }, /* not CP855 ?? */ | |
| 627 | { "mt", "CP850" }, | |
| 628 | { "mt_MT", "CP850" }, | |
| 629 | { "nb", "CP865" }, /* not CP850 ?? */ | |
| 630 | { "nb_NO", "CP865" }, /* not CP850 ?? */ | |
| 631 | { "nl", "CP850" }, | |
| 632 | { "nl_BE", "CP850" }, | |
| 633 | { "nl_NL", "CP850" }, | |
| 634 | { "nn", "CP865" }, /* not CP850 ?? */ | |
| 635 | { "nn_NO", "CP865" }, /* not CP850 ?? */ | |
| 636 | { "no", "CP865" }, /* not CP850 ?? */ | |
| 637 | { "no_NO", "CP865" }, /* not CP850 ?? */ | |
| 638 | { "pl", "CP852" }, | |
| 639 | { "pl_PL", "CP852" }, | |
| 640 | { "pt", "CP850" }, | |
| 641 | { "pt_BR", "CP850" }, | |
| 642 | { "pt_PT", "CP850" }, | |
| 643 | { "ro", "CP852" }, | |
| 644 | { "ro_RO", "CP852" }, | |
| 645 | { "ru", "CP866" }, | |
| 646 | { "ru_RU", "CP866" }, | |
| 647 | { "sk", "CP852" }, | |
| 648 | { "sk_SK", "CP852" }, | |
| 649 | { "sl", "CP852" }, | |
| 650 | { "sl_SI", "CP852" }, | |
| 651 | { "sq", "CP852" }, | |
| 652 | { "sq_AL", "CP852" }, | |
| 653 | { "sr", "CP852" }, /* CP852 or CP866 or CP855 ?? */ | |
| 654 | { "sr_CS", "CP852" }, /* CP852 or CP866 or CP855 ?? */ | |
| 655 | { "sr_YU", "CP852" }, /* CP852 or CP866 or CP855 ?? */ | |
| 656 | { "sv", "CP850" }, | |
| 657 | { "sv_SE", "CP850" }, | |
| 658 | { "th", "CP874" }, | |
| 659 | { "th_TH", "CP874" }, | |
| 660 | { "tr", "CP857" }, | |
| 661 | { "tr_TR", "CP857" }, | |
| 662 | { "uk", "CP1125" }, | |
| 663 | { "uk_UA", "CP1125" }, | |
| 664 | { "zh_CN", "GBK" }, | |
| 665 | { "zh_TW", "CP950" } /* not CP938 ?? */ | |
| 666 | # define locale_table_defined | |
| 8690e634 | 667 | # endif |
| 7a6dbc2f SDJ |
668 | # ifndef locale_table_defined |
| 669 | /* Just a dummy entry, to avoid a C syntax error. */ | |
| 670 | { "", "" } | |
| 4a626d0a | 671 | # endif |
| 7a6dbc2f | 672 | }; |
| 8690e634 | 673 | |
| 7a6dbc2f | 674 | #endif |
| 8690e634 | 675 | |
| 8690e634 JK |
676 | |
| 677 | /* Determine the current locale's character encoding, and canonicalize it | |
| 7a6dbc2f | 678 | into one of the canonical names listed in localcharset.h. |
| 8690e634 JK |
679 | The result must not be freed; it is statically allocated. |
| 680 | If the canonical name cannot be determined, the result is a non-canonical | |
| 681 | name. */ | |
| 682 | ||
| 683 | #ifdef STATIC | |
| 684 | STATIC | |
| 685 | #endif | |
| 686 | const char * | |
| 687 | locale_charset (void) | |
| 688 | { | |
| 689 | const char *codeset; | |
| 8690e634 | 690 | |
| 7a6dbc2f | 691 | #if HAVE_LANGINFO_CODESET || defined WINDOWS_NATIVE || defined OS2 |
| 8690e634 JK |
692 | |
| 693 | # if HAVE_LANGINFO_CODESET | |
| 694 | ||
| 695 | /* Most systems support nl_langinfo (CODESET) nowadays. */ | |
| 696 | codeset = nl_langinfo (CODESET); | |
| 697 | ||
| 698 | # ifdef __CYGWIN__ | |
| 699 | /* Cygwin < 1.7 does not have locales. nl_langinfo (CODESET) always | |
| 700 | returns "US-ASCII". Return the suffix of the locale name from the | |
| 701 | environment variables (if present) or the codepage as a number. */ | |
| 702 | if (codeset != NULL && strcmp (codeset, "US-ASCII") == 0) | |
| 703 | { | |
| 704 | const char *locale; | |
| 705 | static char buf[2 + 10 + 1]; | |
| 706 | ||
| 707 | locale = getenv ("LC_ALL"); | |
| 708 | if (locale == NULL || locale[0] == '\0') | |
| 709 | { | |
| 710 | locale = getenv ("LC_CTYPE"); | |
| 711 | if (locale == NULL || locale[0] == '\0') | |
| 712 | locale = getenv ("LANG"); | |
| 713 | } | |
| 714 | if (locale != NULL && locale[0] != '\0') | |
| 715 | { | |
| 716 | /* If the locale name contains an encoding after the dot, return | |
| 717 | it. */ | |
| 718 | const char *dot = strchr (locale, '.'); | |
| 719 | ||
| 720 | if (dot != NULL) | |
| 721 | { | |
| 722 | const char *modifier; | |
| 723 | ||
| 724 | dot++; | |
| 725 | /* Look for the possible @... trailer and remove it, if any. */ | |
| 726 | modifier = strchr (dot, '@'); | |
| 727 | if (modifier == NULL) | |
| 728 | return dot; | |
| 729 | if (modifier - dot < sizeof (buf)) | |
| 730 | { | |
| 731 | memcpy (buf, dot, modifier - dot); | |
| 732 | buf [modifier - dot] = '\0'; | |
| 733 | return buf; | |
| 734 | } | |
| 735 | } | |
| 736 | } | |
| 737 | ||
| 738 | /* The Windows API has a function returning the locale's codepage as a | |
| 739 | number: GetACP(). This encoding is used by Cygwin, unless the user | |
| 740 | has set the environment variable CYGWIN=codepage:oem (which very few | |
| 741 | people do). | |
| 742 | Output directed to console windows needs to be converted (to | |
| 743 | GetOEMCP() if the console is using a raster font, or to | |
| 744 | GetConsoleOutputCP() if it is using a TrueType font). Cygwin does | |
| 745 | this conversion transparently (see winsup/cygwin/fhandler_console.cc), | |
| 746 | converting to GetConsoleOutputCP(). This leads to correct results, | |
| 747 | except when SetConsoleOutputCP has been called and a raster font is | |
| 748 | in use. */ | |
| 749 | sprintf (buf, "CP%u", GetACP ()); | |
| 750 | codeset = buf; | |
| 751 | } | |
| 752 | # endif | |
| 753 | ||
| 7a6dbc2f SDJ |
754 | if (codeset == NULL) |
| 755 | /* The canonical name cannot be determined. */ | |
| 756 | codeset = ""; | |
| 8690e634 | 757 | |
| 7a6dbc2f | 758 | # elif defined WINDOWS_NATIVE |
| 8690e634 JK |
759 | |
| 760 | static char buf[2 + 10 + 1]; | |
| 761 | ||
| 4a626d0a PA |
762 | /* The Windows API has a function returning the locale's codepage as |
| 763 | a number, but the value doesn't change according to what the | |
| 764 | 'setlocale' call specified. So we use it as a last resort, in | |
| 765 | case the string returned by 'setlocale' doesn't specify the | |
| 766 | codepage. */ | |
| 767 | char *current_locale = setlocale (LC_ALL, NULL); | |
| 768 | char *pdot; | |
| 769 | ||
| 770 | /* If they set different locales for different categories, | |
| 771 | 'setlocale' will return a semi-colon separated list of locale | |
| 772 | values. To make sure we use the correct one, we choose LC_CTYPE. */ | |
| 773 | if (strchr (current_locale, ';')) | |
| 774 | current_locale = setlocale (LC_CTYPE, NULL); | |
| 775 | ||
| 776 | pdot = strrchr (current_locale, '.'); | |
| 7a6dbc2f | 777 | if (pdot && 2 + strlen (pdot + 1) + 1 <= sizeof (buf)) |
| 4a626d0a PA |
778 | sprintf (buf, "CP%s", pdot + 1); |
| 779 | else | |
| 780 | { | |
| 781 | /* The Windows API has a function returning the locale's codepage as a | |
| 782 | number: GetACP(). | |
| 783 | When the output goes to a console window, it needs to be provided in | |
| 784 | GetOEMCP() encoding if the console is using a raster font, or in | |
| 785 | GetConsoleOutputCP() encoding if it is using a TrueType font. | |
| 786 | But in GUI programs and for output sent to files and pipes, GetACP() | |
| 787 | encoding is the best bet. */ | |
| 788 | sprintf (buf, "CP%u", GetACP ()); | |
| 789 | } | |
| 8690e634 JK |
790 | codeset = buf; |
| 791 | ||
| 7a6dbc2f | 792 | # elif defined OS2 |
| 8690e634 JK |
793 | |
| 794 | const char *locale; | |
| 795 | static char buf[2 + 10 + 1]; | |
| 796 | ULONG cp[3]; | |
| 797 | ULONG cplen; | |
| 798 | ||
| 4a626d0a PA |
799 | codeset = NULL; |
| 800 | ||
| 8690e634 JK |
801 | /* Allow user to override the codeset, as set in the operating system, |
| 802 | with standard language environment variables. */ | |
| 803 | locale = getenv ("LC_ALL"); | |
| 804 | if (locale == NULL || locale[0] == '\0') | |
| 805 | { | |
| 806 | locale = getenv ("LC_CTYPE"); | |
| 807 | if (locale == NULL || locale[0] == '\0') | |
| 808 | locale = getenv ("LANG"); | |
| 809 | } | |
| 810 | if (locale != NULL && locale[0] != '\0') | |
| 811 | { | |
| 812 | /* If the locale name contains an encoding after the dot, return it. */ | |
| 813 | const char *dot = strchr (locale, '.'); | |
| 814 | ||
| 815 | if (dot != NULL) | |
| 816 | { | |
| 817 | const char *modifier; | |
| 818 | ||
| 819 | dot++; | |
| 820 | /* Look for the possible @... trailer and remove it, if any. */ | |
| 821 | modifier = strchr (dot, '@'); | |
| 822 | if (modifier == NULL) | |
| 823 | return dot; | |
| 824 | if (modifier - dot < sizeof (buf)) | |
| 825 | { | |
| 826 | memcpy (buf, dot, modifier - dot); | |
| 827 | buf [modifier - dot] = '\0'; | |
| 828 | return buf; | |
| 829 | } | |
| 830 | } | |
| 831 | ||
| 4a626d0a PA |
832 | /* For the POSIX locale, don't use the system's codepage. */ |
| 833 | if (strcmp (locale, "C") == 0 || strcmp (locale, "POSIX") == 0) | |
| 834 | codeset = ""; | |
| 8690e634 | 835 | } |
| 4a626d0a PA |
836 | |
| 837 | if (codeset == NULL) | |
| 8690e634 JK |
838 | { |
| 839 | /* OS/2 has a function returning the locale's codepage as a number. */ | |
| 840 | if (DosQueryCp (sizeof (cp), cp, &cplen)) | |
| 841 | codeset = ""; | |
| 842 | else | |
| 843 | { | |
| 844 | sprintf (buf, "CP%u", cp[0]); | |
| 845 | codeset = buf; | |
| 846 | } | |
| 847 | } | |
| 848 | ||
| 7a6dbc2f | 849 | # else |
| 8690e634 | 850 | |
| 7a6dbc2f | 851 | # error "Add code for other platforms here." |
| 8690e634 | 852 | |
| 7a6dbc2f SDJ |
853 | # endif |
| 854 | ||
| 855 | /* Resolve alias. */ | |
| 856 | { | |
| 857 | # ifdef alias_table_defined | |
| 858 | /* On some platforms, UTF-8 locales are the most frequently used ones. | |
| 859 | Speed up the common case and slow down the less common cases by | |
| 860 | testing for this case first. */ | |
| 861 | # if defined __OpenBSD__ || (defined __APPLE__ && defined __MACH__) || defined __sun || defined __CYGWIN__ | |
| 862 | if (strcmp (codeset, "UTF-8") == 0) | |
| 863 | goto done_table_lookup; | |
| 864 | else | |
| 865 | # endif | |
| 8690e634 | 866 | { |
| 7a6dbc2f SDJ |
867 | const struct table_entry * const table = alias_table; |
| 868 | size_t const table_size = | |
| 869 | sizeof (alias_table) / sizeof (struct table_entry); | |
| 870 | /* The table is sorted. Perform a binary search. */ | |
| 871 | size_t hi = table_size; | |
| 872 | size_t lo = 0; | |
| 873 | while (lo < hi) | |
| 874 | { | |
| 875 | /* Invariant: | |
| 876 | for i < lo, strcmp (table[i].alias, codeset) < 0, | |
| 877 | for i >= hi, strcmp (table[i].alias, codeset) > 0. */ | |
| 878 | size_t mid = (hi + lo) >> 1; /* >= lo, < hi */ | |
| 879 | int cmp = strcmp (table[mid].alias, codeset); | |
| 880 | if (cmp < 0) | |
| 881 | lo = mid + 1; | |
| 882 | else if (cmp > 0) | |
| 883 | hi = mid; | |
| 884 | else | |
| 885 | { | |
| 886 | /* Found an i with | |
| 887 | strcmp (table[i].alias, codeset) == 0. */ | |
| 888 | codeset = table[mid].canonical; | |
| 889 | goto done_table_lookup; | |
| 890 | } | |
| 891 | } | |
| 8690e634 | 892 | } |
| 7a6dbc2f SDJ |
893 | if (0) |
| 894 | done_table_lookup: ; | |
| 895 | else | |
| 896 | # endif | |
| 897 | { | |
| 898 | /* Did not find it in the table. */ | |
| 899 | /* On Mac OS X, all modern locales use the UTF-8 encoding. | |
| 900 | BeOS and Haiku have a single locale, and it has UTF-8 encoding. */ | |
| 901 | # if (defined __APPLE__ && defined __MACH__) || defined __BEOS__ || defined __HAIKU__ | |
| 902 | codeset = "UTF-8"; | |
| 903 | # else | |
| 904 | /* Don't return an empty string. GNU libc and GNU libiconv interpret | |
| 905 | the empty string as denoting "the locale's character encoding", | |
| 906 | thus GNU libiconv would call this function a second time. */ | |
| 907 | if (codeset[0] == '\0') | |
| 908 | codeset = "ASCII"; | |
| 909 | # endif | |
| 910 | } | |
| 911 | } | |
| 8690e634 | 912 | |
| 7a6dbc2f SDJ |
913 | #else |
| 914 | ||
| 915 | /* On old systems which lack it, use setlocale or getenv. */ | |
| 916 | const char *locale = NULL; | |
| 917 | ||
| 918 | /* But most old systems don't have a complete set of locales. Some | |
| 919 | (like DJGPP) have only the C locale. Therefore we don't use setlocale | |
| 920 | here; it would return "C" when it doesn't support the locale name the | |
| 921 | user has set. */ | |
| 922 | # if 0 | |
| 923 | locale = setlocale (LC_CTYPE, NULL); | |
| 924 | # endif | |
| 925 | if (locale == NULL || locale[0] == '\0') | |
| 926 | { | |
| 927 | locale = getenv ("LC_ALL"); | |
| 928 | if (locale == NULL || locale[0] == '\0') | |
| 929 | { | |
| 930 | locale = getenv ("LC_CTYPE"); | |
| 931 | if (locale == NULL || locale[0] == '\0') | |
| 932 | locale = getenv ("LANG"); | |
| 933 | if (locale == NULL) | |
| 934 | locale = ""; | |
| 935 | } | |
| 936 | } | |
| 937 | ||
| 938 | /* Map locale name to canonical encoding name. */ | |
| 939 | { | |
| 940 | # ifdef locale_table_defined | |
| 941 | const struct table_entry * const table = locale_table; | |
| 942 | size_t const table_size = | |
| 943 | sizeof (locale_table) / sizeof (struct table_entry); | |
| 944 | /* The table is sorted. Perform a binary search. */ | |
| 945 | size_t hi = table_size; | |
| 946 | size_t lo = 0; | |
| 947 | while (lo < hi) | |
| 948 | { | |
| 949 | /* Invariant: | |
| 950 | for i < lo, strcmp (table[i].locale, locale) < 0, | |
| 951 | for i >= hi, strcmp (table[i].locale, locale) > 0. */ | |
| 952 | size_t mid = (hi + lo) >> 1; /* >= lo, < hi */ | |
| 953 | int cmp = strcmp (table[mid].locale, locale); | |
| 954 | if (cmp < 0) | |
| 955 | lo = mid + 1; | |
| 956 | else if (cmp > 0) | |
| 957 | hi = mid; | |
| 958 | else | |
| 959 | { | |
| 960 | /* Found an i with | |
| 961 | strcmp (table[i].locale, locale) == 0. */ | |
| 962 | codeset = table[mid].canonical; | |
| 963 | goto done_table_lookup; | |
| 964 | } | |
| 965 | } | |
| 966 | if (0) | |
| 967 | done_table_lookup: ; | |
| 968 | else | |
| 969 | # endif | |
| 970 | { | |
| 971 | /* Did not find it in the table. */ | |
| 972 | /* On Mac OS X, all modern locales use the UTF-8 encoding. | |
| 973 | BeOS and Haiku have a single locale, and it has UTF-8 encoding. */ | |
| 974 | # if (defined __APPLE__ && defined __MACH__) || defined __BEOS__ || defined __HAIKU__ | |
| 975 | codeset = "UTF-8"; | |
| 976 | # else | |
| 977 | /* The canonical name cannot be determined. */ | |
| 978 | /* Don't return an empty string. GNU libc and GNU libiconv interpret | |
| 979 | the empty string as denoting "the locale's character encoding", | |
| 980 | thus GNU libiconv would call this function a second time. */ | |
| 981 | codeset = "ASCII"; | |
| 982 | # endif | |
| 983 | } | |
| 984 | } | |
| 985 | ||
| 986 | #endif | |
| 8690e634 | 987 | |
| a512b375 JB |
988 | #ifdef DARWIN7 |
| 989 | /* Mac OS X sets MB_CUR_MAX to 1 when LC_ALL=C, and "UTF-8" | |
| 990 | (the default codeset) does not work when MB_CUR_MAX is 1. */ | |
| 4a626d0a | 991 | if (strcmp (codeset, "UTF-8") == 0 && MB_CUR_MAX_L (uselocale (NULL)) <= 1) |
| a512b375 JB |
992 | codeset = "ASCII"; |
| 993 | #endif | |
| 994 | ||
| 8690e634 JK |
995 | return codeset; |
| 996 | } |