1160 lines
39 KiB
C
1160 lines
39 KiB
C
/* Determine a canonical name for the current locale's character encoding.
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Copyright (C) 2000-2006, 2008-2023 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>. */
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#include <config.h>
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/* Specification. */
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#include "localcharset.h"
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#include <stddef.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#if defined __APPLE__ && defined __MACH__ && HAVE_LANGINFO_CODESET
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# define DARWIN7 /* Darwin 7 or newer, i.e. Mac OS X 10.3 or newer */
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#endif
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#if defined _WIN32 && !defined __CYGWIN__
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# define WINDOWS_NATIVE
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# include <locale.h>
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#endif
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#if defined __EMX__
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/* Assume EMX program runs on OS/2, even if compiled under DOS. */
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# ifndef OS2
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# define OS2
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# endif
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#endif
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#if !defined WINDOWS_NATIVE
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# if HAVE_LANGINFO_CODESET
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# include <langinfo.h>
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# else
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# if 0 /* see comment regarding use of setlocale(), below */
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# include <locale.h>
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# endif
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# endif
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# ifdef __CYGWIN__
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# define WIN32_LEAN_AND_MEAN
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# include <windows.h>
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# endif
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#elif defined WINDOWS_NATIVE
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# define WIN32_LEAN_AND_MEAN
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# include <windows.h>
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/* For the use of setlocale() below, the Gnulib override in setlocale.c is
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not needed; see the platform lists in setlocale_null.m4. */
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# undef setlocale
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#endif
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#if defined OS2
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# define INCL_DOS
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# include <os2.h>
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#endif
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/* For MB_CUR_MAX_L */
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#if defined DARWIN7
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# include <xlocale.h>
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#endif
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#if HAVE_LANGINFO_CODESET || defined WINDOWS_NATIVE || defined OS2
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/* On these platforms, we use a mapping from non-canonical encoding name
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to GNU canonical encoding name. */
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/* With glibc-2.1 or newer, we don't need any canonicalization,
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because glibc has iconv and both glibc and libiconv support all
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GNU canonical names directly. */
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# if !((defined __GNU_LIBRARY__ && __GLIBC__ >= 2) || defined __UCLIBC__)
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struct table_entry
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{
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const char alias[11+1];
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const char canonical[11+1];
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};
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/* Table of platform-dependent mappings, sorted in ascending order. */
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static const struct table_entry alias_table[] =
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{
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# if defined __FreeBSD__ /* FreeBSD */
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/*{ "ARMSCII-8", "ARMSCII-8" },*/
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{ "Big5", "BIG5" },
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{ "C", "ASCII" },
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/*{ "CP1131", "CP1131" },*/
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/*{ "CP1251", "CP1251" },*/
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/*{ "CP866", "CP866" },*/
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/*{ "GB18030", "GB18030" },*/
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/*{ "GB2312", "GB2312" },*/
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/*{ "GBK", "GBK" },*/
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/*{ "ISCII-DEV", "?" },*/
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{ "ISO8859-1", "ISO-8859-1" },
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{ "ISO8859-13", "ISO-8859-13" },
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{ "ISO8859-15", "ISO-8859-15" },
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{ "ISO8859-2", "ISO-8859-2" },
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{ "ISO8859-5", "ISO-8859-5" },
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{ "ISO8859-7", "ISO-8859-7" },
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{ "ISO8859-9", "ISO-8859-9" },
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/*{ "KOI8-R", "KOI8-R" },*/
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/*{ "KOI8-U", "KOI8-U" },*/
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{ "SJIS", "SHIFT_JIS" },
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{ "US-ASCII", "ASCII" },
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{ "eucCN", "GB2312" },
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{ "eucJP", "EUC-JP" },
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{ "eucKR", "EUC-KR" }
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# define alias_table_defined
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# endif
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# if defined __NetBSD__ /* NetBSD */
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{ "646", "ASCII" },
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/*{ "ARMSCII-8", "ARMSCII-8" },*/
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/*{ "BIG5", "BIG5" },*/
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{ "Big5-HKSCS", "BIG5-HKSCS" },
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/*{ "CP1251", "CP1251" },*/
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/*{ "CP866", "CP866" },*/
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/*{ "GB18030", "GB18030" },*/
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/*{ "GB2312", "GB2312" },*/
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{ "ISO8859-1", "ISO-8859-1" },
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{ "ISO8859-13", "ISO-8859-13" },
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{ "ISO8859-15", "ISO-8859-15" },
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{ "ISO8859-2", "ISO-8859-2" },
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{ "ISO8859-4", "ISO-8859-4" },
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{ "ISO8859-5", "ISO-8859-5" },
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{ "ISO8859-7", "ISO-8859-7" },
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/*{ "KOI8-R", "KOI8-R" },*/
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/*{ "KOI8-U", "KOI8-U" },*/
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/*{ "PT154", "PT154" },*/
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{ "SJIS", "SHIFT_JIS" },
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{ "eucCN", "GB2312" },
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{ "eucJP", "EUC-JP" },
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{ "eucKR", "EUC-KR" },
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{ "eucTW", "EUC-TW" }
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# define alias_table_defined
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# endif
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# if defined __OpenBSD__ /* OpenBSD */
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{ "646", "ASCII" },
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{ "ISO8859-1", "ISO-8859-1" },
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{ "ISO8859-13", "ISO-8859-13" },
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{ "ISO8859-15", "ISO-8859-15" },
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{ "ISO8859-2", "ISO-8859-2" },
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{ "ISO8859-4", "ISO-8859-4" },
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{ "ISO8859-5", "ISO-8859-5" },
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{ "ISO8859-7", "ISO-8859-7" },
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{ "US-ASCII", "ASCII" }
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# define alias_table_defined
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# endif
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# if defined __APPLE__ && defined __MACH__ /* Mac OS X */
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/* Darwin 7.5 has nl_langinfo(CODESET), but sometimes its value is
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useless:
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- It returns the empty string when LANG is set to a locale of the
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form ll_CC, although ll_CC/LC_CTYPE is a symlink to an UTF-8
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LC_CTYPE file.
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- The environment variables LANG, LC_CTYPE, LC_ALL are not set by
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the system; nl_langinfo(CODESET) returns "US-ASCII" in this case.
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- The documentation says:
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"... all code that calls BSD system routines should ensure
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that the const *char parameters of these routines are in UTF-8
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encoding. All BSD system functions expect their string
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parameters to be in UTF-8 encoding and nothing else."
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It also says
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"An additional caveat is that string parameters for files,
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paths, and other file-system entities must be in canonical
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UTF-8. In a canonical UTF-8 Unicode string, all decomposable
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characters are decomposed ..."
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but this is not true: You can pass non-decomposed UTF-8 strings
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to file system functions, and it is the OS which will convert
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them to decomposed UTF-8 before accessing the file system.
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- The Apple Terminal application displays UTF-8 by default.
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- However, other applications are free to use different encodings:
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- xterm uses ISO-8859-1 by default.
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- TextEdit uses MacRoman by default.
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We prefer UTF-8 over decomposed UTF-8-MAC because one should
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minimize the use of decomposed Unicode. Unfortunately, through the
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Darwin file system, decomposed UTF-8 strings are leaked into user
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space nevertheless.
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Then there are also the locales with encodings other than US-ASCII
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and UTF-8. These locales can be occasionally useful to users (e.g.
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when grepping through ISO-8859-1 encoded text files), when all their
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file names are in US-ASCII.
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*/
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{ "ARMSCII-8", "ARMSCII-8" },
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{ "Big5", "BIG5" },
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{ "Big5HKSCS", "BIG5-HKSCS" },
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{ "CP1131", "CP1131" },
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{ "CP1251", "CP1251" },
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{ "CP866", "CP866" },
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{ "CP949", "CP949" },
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{ "GB18030", "GB18030" },
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{ "GB2312", "GB2312" },
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{ "GBK", "GBK" },
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/*{ "ISCII-DEV", "?" },*/
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{ "ISO8859-1", "ISO-8859-1" },
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{ "ISO8859-13", "ISO-8859-13" },
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{ "ISO8859-15", "ISO-8859-15" },
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{ "ISO8859-2", "ISO-8859-2" },
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{ "ISO8859-4", "ISO-8859-4" },
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{ "ISO8859-5", "ISO-8859-5" },
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{ "ISO8859-7", "ISO-8859-7" },
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{ "ISO8859-9", "ISO-8859-9" },
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{ "KOI8-R", "KOI8-R" },
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{ "KOI8-U", "KOI8-U" },
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{ "PT154", "PT154" },
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{ "SJIS", "SHIFT_JIS" },
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{ "eucCN", "GB2312" },
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{ "eucJP", "EUC-JP" },
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{ "eucKR", "EUC-KR" }
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# define alias_table_defined
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# endif
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# if defined _AIX /* AIX */
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/*{ "GBK", "GBK" },*/
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{ "IBM-1046", "CP1046" },
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{ "IBM-1124", "CP1124" },
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{ "IBM-1129", "CP1129" },
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{ "IBM-1252", "CP1252" },
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{ "IBM-850", "CP850" },
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{ "IBM-856", "CP856" },
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{ "IBM-921", "ISO-8859-13" },
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{ "IBM-922", "CP922" },
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{ "IBM-932", "CP932" },
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{ "IBM-943", "CP943" },
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{ "IBM-eucCN", "GB2312" },
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{ "IBM-eucJP", "EUC-JP" },
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{ "IBM-eucKR", "EUC-KR" },
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{ "IBM-eucTW", "EUC-TW" },
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{ "ISO8859-1", "ISO-8859-1" },
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{ "ISO8859-15", "ISO-8859-15" },
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{ "ISO8859-2", "ISO-8859-2" },
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{ "ISO8859-5", "ISO-8859-5" },
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{ "ISO8859-6", "ISO-8859-6" },
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{ "ISO8859-7", "ISO-8859-7" },
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{ "ISO8859-8", "ISO-8859-8" },
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{ "ISO8859-9", "ISO-8859-9" },
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{ "TIS-620", "TIS-620" },
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/*{ "UTF-8", "UTF-8" },*/
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{ "big5", "BIG5" }
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# define alias_table_defined
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# endif
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# if defined __hpux /* HP-UX */
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{ "SJIS", "SHIFT_JIS" },
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{ "arabic8", "HP-ARABIC8" },
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{ "big5", "BIG5" },
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{ "cp1251", "CP1251" },
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{ "eucJP", "EUC-JP" },
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{ "eucKR", "EUC-KR" },
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{ "eucTW", "EUC-TW" },
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{ "gb18030", "GB18030" },
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{ "greek8", "HP-GREEK8" },
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{ "hebrew8", "HP-HEBREW8" },
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{ "hkbig5", "BIG5-HKSCS" },
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{ "hp15CN", "GB2312" },
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{ "iso88591", "ISO-8859-1" },
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{ "iso885913", "ISO-8859-13" },
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{ "iso885915", "ISO-8859-15" },
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{ "iso88592", "ISO-8859-2" },
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{ "iso88594", "ISO-8859-4" },
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{ "iso88595", "ISO-8859-5" },
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{ "iso88596", "ISO-8859-6" },
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{ "iso88597", "ISO-8859-7" },
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{ "iso88598", "ISO-8859-8" },
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{ "iso88599", "ISO-8859-9" },
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{ "kana8", "HP-KANA8" },
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{ "koi8r", "KOI8-R" },
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{ "roman8", "HP-ROMAN8" },
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{ "tis620", "TIS-620" },
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{ "turkish8", "HP-TURKISH8" },
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{ "utf8", "UTF-8" }
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# define alias_table_defined
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# endif
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# if defined __sgi /* IRIX */
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{ "ISO8859-1", "ISO-8859-1" },
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{ "ISO8859-15", "ISO-8859-15" },
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{ "ISO8859-2", "ISO-8859-2" },
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{ "ISO8859-5", "ISO-8859-5" },
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{ "ISO8859-7", "ISO-8859-7" },
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{ "ISO8859-9", "ISO-8859-9" },
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{ "eucCN", "GB2312" },
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{ "eucJP", "EUC-JP" },
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{ "eucKR", "EUC-KR" },
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{ "eucTW", "EUC-TW" }
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# define alias_table_defined
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# endif
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# if defined __osf__ /* OSF/1 */
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/*{ "GBK", "GBK" },*/
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{ "ISO8859-1", "ISO-8859-1" },
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{ "ISO8859-15", "ISO-8859-15" },
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{ "ISO8859-2", "ISO-8859-2" },
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{ "ISO8859-4", "ISO-8859-4" },
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{ "ISO8859-5", "ISO-8859-5" },
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{ "ISO8859-7", "ISO-8859-7" },
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{ "ISO8859-8", "ISO-8859-8" },
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{ "ISO8859-9", "ISO-8859-9" },
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{ "KSC5601", "CP949" },
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{ "SJIS", "SHIFT_JIS" },
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{ "TACTIS", "TIS-620" },
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/*{ "UTF-8", "UTF-8" },*/
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{ "big5", "BIG5" },
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{ "cp850", "CP850" },
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{ "dechanyu", "DEC-HANYU" },
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{ "dechanzi", "GB2312" },
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{ "deckanji", "DEC-KANJI" },
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{ "deckorean", "EUC-KR" },
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{ "eucJP", "EUC-JP" },
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{ "eucKR", "EUC-KR" },
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{ "eucTW", "EUC-TW" },
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{ "sdeckanji", "EUC-JP" }
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# define alias_table_defined
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# endif
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# if defined __sun /* Solaris */
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{ "5601", "EUC-KR" },
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{ "646", "ASCII" },
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/*{ "BIG5", "BIG5" },*/
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{ "Big5-HKSCS", "BIG5-HKSCS" },
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{ "GB18030", "GB18030" },
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/*{ "GBK", "GBK" },*/
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{ "ISO8859-1", "ISO-8859-1" },
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{ "ISO8859-11", "TIS-620" },
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{ "ISO8859-13", "ISO-8859-13" },
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{ "ISO8859-15", "ISO-8859-15" },
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{ "ISO8859-2", "ISO-8859-2" },
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{ "ISO8859-3", "ISO-8859-3" },
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{ "ISO8859-4", "ISO-8859-4" },
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{ "ISO8859-5", "ISO-8859-5" },
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{ "ISO8859-6", "ISO-8859-6" },
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{ "ISO8859-7", "ISO-8859-7" },
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{ "ISO8859-8", "ISO-8859-8" },
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{ "ISO8859-9", "ISO-8859-9" },
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{ "PCK", "SHIFT_JIS" },
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{ "TIS620.2533", "TIS-620" },
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/*{ "UTF-8", "UTF-8" },*/
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{ "ansi-1251", "CP1251" },
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{ "cns11643", "EUC-TW" },
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{ "eucJP", "EUC-JP" },
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{ "gb2312", "GB2312" },
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{ "koi8-r", "KOI8-R" }
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# define alias_table_defined
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# endif
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# if defined __minix /* Minix */
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{ "646", "ASCII" }
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# define alias_table_defined
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# endif
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# if defined WINDOWS_NATIVE || defined __CYGWIN__ /* Windows */
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{ "CP1361", "JOHAB" },
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{ "CP20127", "ASCII" },
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{ "CP20866", "KOI8-R" },
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{ "CP20936", "GB2312" },
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{ "CP21866", "KOI8-RU" },
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{ "CP28591", "ISO-8859-1" },
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{ "CP28592", "ISO-8859-2" },
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{ "CP28593", "ISO-8859-3" },
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{ "CP28594", "ISO-8859-4" },
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{ "CP28595", "ISO-8859-5" },
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{ "CP28596", "ISO-8859-6" },
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{ "CP28597", "ISO-8859-7" },
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{ "CP28598", "ISO-8859-8" },
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{ "CP28599", "ISO-8859-9" },
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{ "CP28605", "ISO-8859-15" },
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{ "CP38598", "ISO-8859-8" },
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{ "CP51932", "EUC-JP" },
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{ "CP51936", "GB2312" },
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{ "CP51949", "EUC-KR" },
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{ "CP51950", "EUC-TW" },
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{ "CP54936", "GB18030" },
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{ "CP65001", "UTF-8" },
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{ "CP936", "GBK" }
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# define alias_table_defined
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# endif
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# if defined OS2 /* OS/2 */
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/* The list of encodings is taken from "List of OS/2 Codepages"
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by Alex Taylor:
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<http://altsan.org/os2/toolkits/uls/index.html#codepages>.
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See also "__convcp() of kLIBC":
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<https://github.com/bitwiseworks/libc/blob/master/src/emx/src/lib/locale/__convcp.c>. */
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{ "CP1004", "CP1252" },
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/*{ "CP1041", "CP943" },*/
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/*{ "CP1088", "CP949" },*/
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{ "CP1089", "ISO-8859-6" },
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/*{ "CP1114", "CP950" },*/
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/*{ "CP1115", "GB2312" },*/
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{ "CP1208", "UTF-8" },
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/*{ "CP1380", "GB2312" },*/
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{ "CP1381", "GB2312" },
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{ "CP1383", "GB2312" },
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{ "CP1386", "GBK" },
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/*{ "CP301", "CP943" },*/
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{ "CP3372", "EUC-JP" },
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{ "CP4946", "CP850" },
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/*{ "CP5048", "JIS_X0208-1990" },*/
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/*{ "CP5049", "JIS_X0212-1990" },*/
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/*{ "CP5067", "KS_C_5601-1987" },*/
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{ "CP813", "ISO-8859-7" },
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{ "CP819", "ISO-8859-1" },
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{ "CP878", "KOI8-R" },
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/*{ "CP897", "CP943" },*/
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{ "CP912", "ISO-8859-2" },
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{ "CP913", "ISO-8859-3" },
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{ "CP914", "ISO-8859-4" },
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{ "CP915", "ISO-8859-5" },
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{ "CP916", "ISO-8859-8" },
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{ "CP920", "ISO-8859-9" },
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{ "CP921", "ISO-8859-13" },
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{ "CP923", "ISO-8859-15" },
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|
/*{ "CP941", "CP943" },*/
|
|
/*{ "CP947", "CP950" },*/
|
|
/*{ "CP951", "CP949" },*/
|
|
/*{ "CP952", "JIS_X0208-1990" },*/
|
|
/*{ "CP953", "JIS_X0212-1990" },*/
|
|
{ "CP954", "EUC-JP" },
|
|
{ "CP964", "EUC-TW" },
|
|
{ "CP970", "EUC-KR" },
|
|
/*{ "CP971", "KS_C_5601-1987" },*/
|
|
{ "IBM-1004", "CP1252" },
|
|
/*{ "IBM-1006", "?" },*/
|
|
/*{ "IBM-1008", "?" },*/
|
|
/*{ "IBM-1041", "CP943" },*/
|
|
/*{ "IBM-1051", "?" },*/
|
|
/*{ "IBM-1088", "CP949" },*/
|
|
{ "IBM-1089", "ISO-8859-6" },
|
|
/*{ "IBM-1098", "?" },*/
|
|
/*{ "IBM-1114", "CP950" },*/
|
|
/*{ "IBM-1115", "GB2312" },*/
|
|
/*{ "IBM-1116", "?" },*/
|
|
/*{ "IBM-1117", "?" },*/
|
|
/*{ "IBM-1118", "?" },*/
|
|
/*{ "IBM-1119", "?" },*/
|
|
{ "IBM-1124", "CP1124" },
|
|
{ "IBM-1125", "CP1125" },
|
|
{ "IBM-1131", "CP1131" },
|
|
{ "IBM-1208", "UTF-8" },
|
|
{ "IBM-1250", "CP1250" },
|
|
{ "IBM-1251", "CP1251" },
|
|
{ "IBM-1252", "CP1252" },
|
|
{ "IBM-1253", "CP1253" },
|
|
{ "IBM-1254", "CP1254" },
|
|
{ "IBM-1255", "CP1255" },
|
|
{ "IBM-1256", "CP1256" },
|
|
{ "IBM-1257", "CP1257" },
|
|
/*{ "IBM-1275", "?" },*/
|
|
/*{ "IBM-1276", "?" },*/
|
|
/*{ "IBM-1277", "?" },*/
|
|
/*{ "IBM-1280", "?" },*/
|
|
/*{ "IBM-1281", "?" },*/
|
|
/*{ "IBM-1282", "?" },*/
|
|
/*{ "IBM-1283", "?" },*/
|
|
/*{ "IBM-1380", "GB2312" },*/
|
|
{ "IBM-1381", "GB2312" },
|
|
{ "IBM-1383", "GB2312" },
|
|
{ "IBM-1386", "GBK" },
|
|
/*{ "IBM-301", "CP943" },*/
|
|
{ "IBM-3372", "EUC-JP" },
|
|
{ "IBM-367", "ASCII" },
|
|
{ "IBM-437", "CP437" },
|
|
{ "IBM-4946", "CP850" },
|
|
/*{ "IBM-5048", "JIS_X0208-1990" },*/
|
|
/*{ "IBM-5049", "JIS_X0212-1990" },*/
|
|
/*{ "IBM-5067", "KS_C_5601-1987" },*/
|
|
{ "IBM-813", "ISO-8859-7" },
|
|
{ "IBM-819", "ISO-8859-1" },
|
|
{ "IBM-850", "CP850" },
|
|
/*{ "IBM-851", "?" },*/
|
|
{ "IBM-852", "CP852" },
|
|
{ "IBM-855", "CP855" },
|
|
{ "IBM-856", "CP856" },
|
|
{ "IBM-857", "CP857" },
|
|
/*{ "IBM-859", "?" },*/
|
|
{ "IBM-860", "CP860" },
|
|
{ "IBM-861", "CP861" },
|
|
{ "IBM-862", "CP862" },
|
|
{ "IBM-863", "CP863" },
|
|
{ "IBM-864", "CP864" },
|
|
{ "IBM-865", "CP865" },
|
|
{ "IBM-866", "CP866" },
|
|
/*{ "IBM-868", "?" },*/
|
|
{ "IBM-869", "CP869" },
|
|
{ "IBM-874", "CP874" },
|
|
{ "IBM-878", "KOI8-R" },
|
|
/*{ "IBM-895", "?" },*/
|
|
/*{ "IBM-897", "CP943" },*/
|
|
/*{ "IBM-907", "?" },*/
|
|
/*{ "IBM-909", "?" },*/
|
|
{ "IBM-912", "ISO-8859-2" },
|
|
{ "IBM-913", "ISO-8859-3" },
|
|
{ "IBM-914", "ISO-8859-4" },
|
|
{ "IBM-915", "ISO-8859-5" },
|
|
{ "IBM-916", "ISO-8859-8" },
|
|
{ "IBM-920", "ISO-8859-9" },
|
|
{ "IBM-921", "ISO-8859-13" },
|
|
{ "IBM-922", "CP922" },
|
|
{ "IBM-923", "ISO-8859-15" },
|
|
{ "IBM-932", "CP932" },
|
|
/*{ "IBM-941", "CP943" },*/
|
|
/*{ "IBM-942", "?" },*/
|
|
{ "IBM-943", "CP943" },
|
|
/*{ "IBM-947", "CP950" },*/
|
|
{ "IBM-949", "CP949" },
|
|
{ "IBM-950", "CP950" },
|
|
/*{ "IBM-951", "CP949" },*/
|
|
/*{ "IBM-952", "JIS_X0208-1990" },*/
|
|
/*{ "IBM-953", "JIS_X0212-1990" },*/
|
|
{ "IBM-954", "EUC-JP" },
|
|
/*{ "IBM-955", "?" },*/
|
|
{ "IBM-964", "EUC-TW" },
|
|
{ "IBM-970", "EUC-KR" },
|
|
/*{ "IBM-971", "KS_C_5601-1987" },*/
|
|
{ "IBM-eucCN", "GB2312" },
|
|
{ "IBM-eucJP", "EUC-JP" },
|
|
{ "IBM-eucKR", "EUC-KR" },
|
|
{ "IBM-eucTW", "EUC-TW" },
|
|
{ "IBM33722", "EUC-JP" },
|
|
{ "ISO8859-1", "ISO-8859-1" },
|
|
{ "ISO8859-2", "ISO-8859-2" },
|
|
{ "ISO8859-3", "ISO-8859-3" },
|
|
{ "ISO8859-4", "ISO-8859-4" },
|
|
{ "ISO8859-5", "ISO-8859-5" },
|
|
{ "ISO8859-6", "ISO-8859-6" },
|
|
{ "ISO8859-7", "ISO-8859-7" },
|
|
{ "ISO8859-8", "ISO-8859-8" },
|
|
{ "ISO8859-9", "ISO-8859-9" },
|
|
/*{ "JISX0201-1976", "JISX0201-1976" },*/
|
|
/*{ "JISX0208-1978", "?" },*/
|
|
/*{ "JISX0208-1983", "JIS_X0208-1983" },*/
|
|
/*{ "JISX0208-1990", "JIS_X0208-1990" },*/
|
|
/*{ "JISX0212-1990", "JIS_X0212-1990" },*/
|
|
/*{ "KSC5601-1987", "KS_C_5601-1987" },*/
|
|
{ "SJIS-1", "CP943" },
|
|
{ "SJIS-2", "CP943" },
|
|
{ "eucJP", "EUC-JP" },
|
|
{ "eucKR", "EUC-KR" },
|
|
{ "eucTW-1993", "EUC-TW" }
|
|
# define alias_table_defined
|
|
# endif
|
|
# if defined VMS /* OpenVMS */
|
|
/* The list of encodings is taken from the OpenVMS 7.3-1 documentation
|
|
"Compaq C Run-Time Library Reference Manual for OpenVMS systems"
|
|
section 10.7 "Handling Different Character Sets". */
|
|
{ "DECHANYU", "DEC-HANYU" },
|
|
{ "DECHANZI", "GB2312" },
|
|
{ "DECKANJI", "DEC-KANJI" },
|
|
{ "DECKOREAN", "EUC-KR" },
|
|
{ "ISO8859-1", "ISO-8859-1" },
|
|
{ "ISO8859-2", "ISO-8859-2" },
|
|
{ "ISO8859-5", "ISO-8859-5" },
|
|
{ "ISO8859-7", "ISO-8859-7" },
|
|
{ "ISO8859-8", "ISO-8859-8" },
|
|
{ "ISO8859-9", "ISO-8859-9" },
|
|
{ "SDECKANJI", "EUC-JP" },
|
|
{ "SJIS", "SHIFT_JIS" },
|
|
{ "eucJP", "EUC-JP" },
|
|
{ "eucTW", "EUC-TW" }
|
|
# define alias_table_defined
|
|
# endif
|
|
# ifndef alias_table_defined
|
|
/* Just a dummy entry, to avoid a C syntax error. */
|
|
{ "", "" }
|
|
# endif
|
|
};
|
|
|
|
# endif
|
|
|
|
#else
|
|
|
|
/* On these platforms, we use a mapping from locale name to GNU canonical
|
|
encoding name. */
|
|
|
|
struct table_entry
|
|
{
|
|
const char locale[17+1];
|
|
const char canonical[11+1];
|
|
};
|
|
|
|
/* Table of platform-dependent mappings, sorted in ascending order. */
|
|
static const struct table_entry locale_table[] =
|
|
{
|
|
# if defined __FreeBSD__ /* FreeBSD 4.2 */
|
|
{ "cs_CZ.ISO_8859-2", "ISO-8859-2" },
|
|
{ "da_DK.DIS_8859-15", "ISO-8859-15" },
|
|
{ "da_DK.ISO_8859-1", "ISO-8859-1" },
|
|
{ "de_AT.DIS_8859-15", "ISO-8859-15" },
|
|
{ "de_AT.ISO_8859-1", "ISO-8859-1" },
|
|
{ "de_CH.DIS_8859-15", "ISO-8859-15" },
|
|
{ "de_CH.ISO_8859-1", "ISO-8859-1" },
|
|
{ "de_DE.DIS_8859-15", "ISO-8859-15" },
|
|
{ "de_DE.ISO_8859-1", "ISO-8859-1" },
|
|
{ "en_AU.DIS_8859-15", "ISO-8859-15" },
|
|
{ "en_AU.ISO_8859-1", "ISO-8859-1" },
|
|
{ "en_CA.DIS_8859-15", "ISO-8859-15" },
|
|
{ "en_CA.ISO_8859-1", "ISO-8859-1" },
|
|
{ "en_GB.DIS_8859-15", "ISO-8859-15" },
|
|
{ "en_GB.ISO_8859-1", "ISO-8859-1" },
|
|
{ "en_US.DIS_8859-15", "ISO-8859-15" },
|
|
{ "en_US.ISO_8859-1", "ISO-8859-1" },
|
|
{ "es_ES.DIS_8859-15", "ISO-8859-15" },
|
|
{ "es_ES.ISO_8859-1", "ISO-8859-1" },
|
|
{ "fi_FI.DIS_8859-15", "ISO-8859-15" },
|
|
{ "fi_FI.ISO_8859-1", "ISO-8859-1" },
|
|
{ "fr_BE.DIS_8859-15", "ISO-8859-15" },
|
|
{ "fr_BE.ISO_8859-1", "ISO-8859-1" },
|
|
{ "fr_CA.DIS_8859-15", "ISO-8859-15" },
|
|
{ "fr_CA.ISO_8859-1", "ISO-8859-1" },
|
|
{ "fr_CH.DIS_8859-15", "ISO-8859-15" },
|
|
{ "fr_CH.ISO_8859-1", "ISO-8859-1" },
|
|
{ "fr_FR.DIS_8859-15", "ISO-8859-15" },
|
|
{ "fr_FR.ISO_8859-1", "ISO-8859-1" },
|
|
{ "hr_HR.ISO_8859-2", "ISO-8859-2" },
|
|
{ "hu_HU.ISO_8859-2", "ISO-8859-2" },
|
|
{ "is_IS.DIS_8859-15", "ISO-8859-15" },
|
|
{ "is_IS.ISO_8859-1", "ISO-8859-1" },
|
|
{ "it_CH.DIS_8859-15", "ISO-8859-15" },
|
|
{ "it_CH.ISO_8859-1", "ISO-8859-1" },
|
|
{ "it_IT.DIS_8859-15", "ISO-8859-15" },
|
|
{ "it_IT.ISO_8859-1", "ISO-8859-1" },
|
|
{ "ja_JP.EUC", "EUC-JP" },
|
|
{ "ja_JP.SJIS", "SHIFT_JIS" },
|
|
{ "ja_JP.Shift_JIS", "SHIFT_JIS" },
|
|
{ "ko_KR.EUC", "EUC-KR" },
|
|
{ "la_LN.ASCII", "ASCII" },
|
|
{ "la_LN.DIS_8859-15", "ISO-8859-15" },
|
|
{ "la_LN.ISO_8859-1", "ISO-8859-1" },
|
|
{ "la_LN.ISO_8859-2", "ISO-8859-2" },
|
|
{ "la_LN.ISO_8859-4", "ISO-8859-4" },
|
|
{ "lt_LN.ASCII", "ASCII" },
|
|
{ "lt_LN.DIS_8859-15", "ISO-8859-15" },
|
|
{ "lt_LN.ISO_8859-1", "ISO-8859-1" },
|
|
{ "lt_LN.ISO_8859-2", "ISO-8859-2" },
|
|
{ "lt_LT.ISO_8859-4", "ISO-8859-4" },
|
|
{ "nl_BE.DIS_8859-15", "ISO-8859-15" },
|
|
{ "nl_BE.ISO_8859-1", "ISO-8859-1" },
|
|
{ "nl_NL.DIS_8859-15", "ISO-8859-15" },
|
|
{ "nl_NL.ISO_8859-1", "ISO-8859-1" },
|
|
{ "no_NO.DIS_8859-15", "ISO-8859-15" },
|
|
{ "no_NO.ISO_8859-1", "ISO-8859-1" },
|
|
{ "pl_PL.ISO_8859-2", "ISO-8859-2" },
|
|
{ "pt_PT.DIS_8859-15", "ISO-8859-15" },
|
|
{ "pt_PT.ISO_8859-1", "ISO-8859-1" },
|
|
{ "ru_RU.CP866", "CP866" },
|
|
{ "ru_RU.ISO_8859-5", "ISO-8859-5" },
|
|
{ "ru_RU.KOI8-R", "KOI8-R" },
|
|
{ "ru_SU.CP866", "CP866" },
|
|
{ "ru_SU.ISO_8859-5", "ISO-8859-5" },
|
|
{ "ru_SU.KOI8-R", "KOI8-R" },
|
|
{ "sl_SI.ISO_8859-2", "ISO-8859-2" },
|
|
{ "sv_SE.DIS_8859-15", "ISO-8859-15" },
|
|
{ "sv_SE.ISO_8859-1", "ISO-8859-1" },
|
|
{ "uk_UA.KOI8-U", "KOI8-U" },
|
|
{ "zh_CN.EUC", "GB2312" },
|
|
{ "zh_TW.BIG5", "BIG5" },
|
|
{ "zh_TW.Big5", "BIG5" }
|
|
# define locale_table_defined
|
|
# endif
|
|
# if defined __DJGPP__ /* DOS / DJGPP 2.03 */
|
|
/* The encodings given here may not all be correct.
|
|
If you find that the encoding given for your language and
|
|
country is not the one your DOS machine actually uses, just
|
|
correct it in this file, and send a mail to
|
|
Juan Manuel Guerrero <juan.guerrero@gmx.de>
|
|
and <bug-gnulib@gnu.org>. */
|
|
{ "C", "ASCII" },
|
|
{ "ar", "CP864" },
|
|
{ "ar_AE", "CP864" },
|
|
{ "ar_DZ", "CP864" },
|
|
{ "ar_EG", "CP864" },
|
|
{ "ar_IQ", "CP864" },
|
|
{ "ar_IR", "CP864" },
|
|
{ "ar_JO", "CP864" },
|
|
{ "ar_KW", "CP864" },
|
|
{ "ar_MA", "CP864" },
|
|
{ "ar_OM", "CP864" },
|
|
{ "ar_QA", "CP864" },
|
|
{ "ar_SA", "CP864" },
|
|
{ "ar_SY", "CP864" },
|
|
{ "be", "CP866" },
|
|
{ "be_BE", "CP866" },
|
|
{ "bg", "CP866" }, /* not CP855 ?? */
|
|
{ "bg_BG", "CP866" }, /* not CP855 ?? */
|
|
{ "ca", "CP850" },
|
|
{ "ca_ES", "CP850" },
|
|
{ "cs", "CP852" },
|
|
{ "cs_CZ", "CP852" },
|
|
{ "da", "CP865" }, /* not CP850 ?? */
|
|
{ "da_DK", "CP865" }, /* not CP850 ?? */
|
|
{ "de", "CP850" },
|
|
{ "de_AT", "CP850" },
|
|
{ "de_CH", "CP850" },
|
|
{ "de_DE", "CP850" },
|
|
{ "el", "CP869" },
|
|
{ "el_GR", "CP869" },
|
|
{ "en", "CP850" },
|
|
{ "en_AU", "CP850" }, /* not CP437 ?? */
|
|
{ "en_CA", "CP850" },
|
|
{ "en_GB", "CP850" },
|
|
{ "en_NZ", "CP437" },
|
|
{ "en_US", "CP437" },
|
|
{ "en_ZA", "CP850" }, /* not CP437 ?? */
|
|
{ "eo", "CP850" },
|
|
{ "eo_EO", "CP850" },
|
|
{ "es", "CP850" },
|
|
{ "es_AR", "CP850" },
|
|
{ "es_BO", "CP850" },
|
|
{ "es_CL", "CP850" },
|
|
{ "es_CO", "CP850" },
|
|
{ "es_CR", "CP850" },
|
|
{ "es_CU", "CP850" },
|
|
{ "es_DO", "CP850" },
|
|
{ "es_EC", "CP850" },
|
|
{ "es_ES", "CP850" },
|
|
{ "es_GT", "CP850" },
|
|
{ "es_HN", "CP850" },
|
|
{ "es_MX", "CP850" },
|
|
{ "es_NI", "CP850" },
|
|
{ "es_PA", "CP850" },
|
|
{ "es_PE", "CP850" },
|
|
{ "es_PY", "CP850" },
|
|
{ "es_SV", "CP850" },
|
|
{ "es_UY", "CP850" },
|
|
{ "es_VE", "CP850" },
|
|
{ "et", "CP850" },
|
|
{ "et_EE", "CP850" },
|
|
{ "eu", "CP850" },
|
|
{ "eu_ES", "CP850" },
|
|
{ "fi", "CP850" },
|
|
{ "fi_FI", "CP850" },
|
|
{ "fr", "CP850" },
|
|
{ "fr_BE", "CP850" },
|
|
{ "fr_CA", "CP850" },
|
|
{ "fr_CH", "CP850" },
|
|
{ "fr_FR", "CP850" },
|
|
{ "ga", "CP850" },
|
|
{ "ga_IE", "CP850" },
|
|
{ "gd", "CP850" },
|
|
{ "gd_GB", "CP850" },
|
|
{ "gl", "CP850" },
|
|
{ "gl_ES", "CP850" },
|
|
{ "he", "CP862" },
|
|
{ "he_IL", "CP862" },
|
|
{ "hr", "CP852" },
|
|
{ "hr_HR", "CP852" },
|
|
{ "hu", "CP852" },
|
|
{ "hu_HU", "CP852" },
|
|
{ "id", "CP850" }, /* not CP437 ?? */
|
|
{ "id_ID", "CP850" }, /* not CP437 ?? */
|
|
{ "is", "CP861" }, /* not CP850 ?? */
|
|
{ "is_IS", "CP861" }, /* not CP850 ?? */
|
|
{ "it", "CP850" },
|
|
{ "it_CH", "CP850" },
|
|
{ "it_IT", "CP850" },
|
|
{ "ja", "CP932" },
|
|
{ "ja_JP", "CP932" },
|
|
{ "kr", "CP949" }, /* not CP934 ?? */
|
|
{ "kr_KR", "CP949" }, /* not CP934 ?? */
|
|
{ "lt", "CP775" },
|
|
{ "lt_LT", "CP775" },
|
|
{ "lv", "CP775" },
|
|
{ "lv_LV", "CP775" },
|
|
{ "mk", "CP866" }, /* not CP855 ?? */
|
|
{ "mk_MK", "CP866" }, /* not CP855 ?? */
|
|
{ "mt", "CP850" },
|
|
{ "mt_MT", "CP850" },
|
|
{ "nb", "CP865" }, /* not CP850 ?? */
|
|
{ "nb_NO", "CP865" }, /* not CP850 ?? */
|
|
{ "nl", "CP850" },
|
|
{ "nl_BE", "CP850" },
|
|
{ "nl_NL", "CP850" },
|
|
{ "nn", "CP865" }, /* not CP850 ?? */
|
|
{ "nn_NO", "CP865" }, /* not CP850 ?? */
|
|
{ "no", "CP865" }, /* not CP850 ?? */
|
|
{ "no_NO", "CP865" }, /* not CP850 ?? */
|
|
{ "pl", "CP852" },
|
|
{ "pl_PL", "CP852" },
|
|
{ "pt", "CP850" },
|
|
{ "pt_BR", "CP850" },
|
|
{ "pt_PT", "CP850" },
|
|
{ "ro", "CP852" },
|
|
{ "ro_RO", "CP852" },
|
|
{ "ru", "CP866" },
|
|
{ "ru_RU", "CP866" },
|
|
{ "sk", "CP852" },
|
|
{ "sk_SK", "CP852" },
|
|
{ "sl", "CP852" },
|
|
{ "sl_SI", "CP852" },
|
|
{ "sq", "CP852" },
|
|
{ "sq_AL", "CP852" },
|
|
{ "sr", "CP852" }, /* CP852 or CP866 or CP855 ?? */
|
|
{ "sr_CS", "CP852" }, /* CP852 or CP866 or CP855 ?? */
|
|
{ "sr_YU", "CP852" }, /* CP852 or CP866 or CP855 ?? */
|
|
{ "sv", "CP850" },
|
|
{ "sv_SE", "CP850" },
|
|
{ "th", "CP874" },
|
|
{ "th_TH", "CP874" },
|
|
{ "tr", "CP857" },
|
|
{ "tr_TR", "CP857" },
|
|
{ "uk", "CP1125" },
|
|
{ "uk_UA", "CP1125" },
|
|
{ "zh_CN", "GBK" },
|
|
{ "zh_TW", "CP950" } /* not CP938 ?? */
|
|
# define locale_table_defined
|
|
# endif
|
|
# ifndef locale_table_defined
|
|
/* Just a dummy entry, to avoid a C syntax error. */
|
|
{ "", "" }
|
|
# endif
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
/* Determine the current locale's character encoding, and canonicalize it
|
|
into one of the canonical names listed below.
|
|
The result must not be freed; it is statically allocated. The result
|
|
becomes invalid when setlocale() is used to change the global locale, or
|
|
when the value of one of the environment variables LC_ALL, LC_CTYPE, LANG
|
|
is changed; threads in multithreaded programs should not do this.
|
|
If the canonical name cannot be determined, the result is a non-canonical
|
|
name. */
|
|
|
|
#ifdef STATIC
|
|
STATIC
|
|
#endif
|
|
const char *
|
|
locale_charset (void)
|
|
{
|
|
const char *codeset;
|
|
|
|
/* This function must be multithread-safe. To achieve this without using
|
|
thread-local storage, we use a simple strcpy or memcpy to fill this static
|
|
buffer. Filling it through, for example, strcpy + strcat would not be
|
|
guaranteed to leave the buffer's contents intact if another thread is
|
|
currently accessing it. If necessary, the contents is first assembled in
|
|
a stack-allocated buffer. */
|
|
|
|
#if HAVE_LANGINFO_CODESET || defined WINDOWS_NATIVE || defined OS2
|
|
|
|
# if HAVE_LANGINFO_CODESET
|
|
|
|
/* Most systems support nl_langinfo (CODESET) nowadays. */
|
|
codeset = nl_langinfo (CODESET);
|
|
|
|
# ifdef __CYGWIN__
|
|
/* Cygwin < 1.7 does not have locales. nl_langinfo (CODESET) always
|
|
returns "US-ASCII". Return the suffix of the locale name from the
|
|
environment variables (if present) or the codepage as a number. */
|
|
if (codeset != NULL && strcmp (codeset, "US-ASCII") == 0)
|
|
{
|
|
const char *locale;
|
|
static char resultbuf[2 + 10 + 1];
|
|
|
|
locale = getenv ("LC_ALL");
|
|
if (locale == NULL || locale[0] == '\0')
|
|
{
|
|
locale = getenv ("LC_CTYPE");
|
|
if (locale == NULL || locale[0] == '\0')
|
|
locale = getenv ("LANG");
|
|
}
|
|
if (locale != NULL && locale[0] != '\0')
|
|
{
|
|
/* If the locale name contains an encoding after the dot, return
|
|
it. */
|
|
const char *dot = strchr (locale, '.');
|
|
|
|
if (dot != NULL)
|
|
{
|
|
const char *modifier;
|
|
|
|
dot++;
|
|
/* Look for the possible @... trailer and remove it, if any. */
|
|
modifier = strchr (dot, '@');
|
|
if (modifier == NULL)
|
|
return dot;
|
|
if (modifier - dot < sizeof (resultbuf))
|
|
{
|
|
/* This way of filling resultbuf is multithread-safe. */
|
|
memcpy (resultbuf, dot, modifier - dot);
|
|
resultbuf [modifier - dot] = '\0';
|
|
return resultbuf;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* The Windows API has a function returning the locale's codepage as a
|
|
number: GetACP(). This encoding is used by Cygwin, unless the user
|
|
has set the environment variable CYGWIN=codepage:oem (which very few
|
|
people do).
|
|
Output directed to console windows needs to be converted (to
|
|
GetOEMCP() if the console is using a raster font, or to
|
|
GetConsoleOutputCP() if it is using a TrueType font). Cygwin does
|
|
this conversion transparently (see winsup/cygwin/fhandler_console.cc),
|
|
converting to GetConsoleOutputCP(). This leads to correct results,
|
|
except when SetConsoleOutputCP has been called and a raster font is
|
|
in use. */
|
|
{
|
|
char buf[2 + 10 + 1];
|
|
|
|
sprintf (buf, "CP%u", GetACP ());
|
|
strcpy (resultbuf, buf);
|
|
codeset = resultbuf;
|
|
}
|
|
}
|
|
# endif
|
|
|
|
if (codeset == NULL)
|
|
/* The canonical name cannot be determined. */
|
|
codeset = "";
|
|
|
|
# elif defined WINDOWS_NATIVE
|
|
|
|
char buf[2 + 10 + 1];
|
|
static char resultbuf[2 + 10 + 1];
|
|
|
|
/* The Windows API has a function returning the locale's codepage as
|
|
a number, but the value doesn't change according to what the
|
|
'setlocale' call specified. So we use it as a last resort, in
|
|
case the string returned by 'setlocale' doesn't specify the
|
|
codepage. */
|
|
char *current_locale = setlocale (LC_CTYPE, NULL);
|
|
char *pdot = strrchr (current_locale, '.');
|
|
|
|
if (pdot && 2 + strlen (pdot + 1) + 1 <= sizeof (buf))
|
|
sprintf (buf, "CP%s", pdot + 1);
|
|
else
|
|
{
|
|
/* The Windows API has a function returning the locale's codepage as a
|
|
number: GetACP().
|
|
When the output goes to a console window, it needs to be provided in
|
|
GetOEMCP() encoding if the console is using a raster font, or in
|
|
GetConsoleOutputCP() encoding if it is using a TrueType font.
|
|
But in GUI programs and for output sent to files and pipes, GetACP()
|
|
encoding is the best bet. */
|
|
sprintf (buf, "CP%u", GetACP ());
|
|
}
|
|
/* For a locale name such as "French_France.65001", in Windows 10,
|
|
setlocale now returns "French_France.utf8" instead. */
|
|
if (strcmp (buf + 2, "65001") == 0 || strcmp (buf + 2, "utf8") == 0)
|
|
codeset = "UTF-8";
|
|
else
|
|
{
|
|
strcpy (resultbuf, buf);
|
|
codeset = resultbuf;
|
|
}
|
|
|
|
# elif defined OS2
|
|
|
|
const char *locale;
|
|
static char resultbuf[2 + 10 + 1];
|
|
ULONG cp[3];
|
|
ULONG cplen;
|
|
|
|
codeset = NULL;
|
|
|
|
/* Allow user to override the codeset, as set in the operating system,
|
|
with standard language environment variables. */
|
|
locale = getenv ("LC_ALL");
|
|
if (locale == NULL || locale[0] == '\0')
|
|
{
|
|
locale = getenv ("LC_CTYPE");
|
|
if (locale == NULL || locale[0] == '\0')
|
|
locale = getenv ("LANG");
|
|
}
|
|
if (locale != NULL && locale[0] != '\0')
|
|
{
|
|
/* If the locale name contains an encoding after the dot, return it. */
|
|
const char *dot = strchr (locale, '.');
|
|
|
|
if (dot != NULL)
|
|
{
|
|
const char *modifier;
|
|
|
|
dot++;
|
|
/* Look for the possible @... trailer and remove it, if any. */
|
|
modifier = strchr (dot, '@');
|
|
if (modifier == NULL)
|
|
return dot;
|
|
if (modifier - dot < sizeof (resultbuf))
|
|
{
|
|
/* This way of filling resultbuf is multithread-safe. */
|
|
memcpy (resultbuf, dot, modifier - dot);
|
|
resultbuf [modifier - dot] = '\0';
|
|
return resultbuf;
|
|
}
|
|
}
|
|
|
|
/* For the POSIX locale, don't use the system's codepage. */
|
|
if (strcmp (locale, "C") == 0 || strcmp (locale, "POSIX") == 0)
|
|
codeset = "";
|
|
}
|
|
|
|
if (codeset == NULL)
|
|
{
|
|
/* OS/2 has a function returning the locale's codepage as a number. */
|
|
if (DosQueryCp (sizeof (cp), cp, &cplen))
|
|
codeset = "";
|
|
else
|
|
{
|
|
char buf[2 + 10 + 1];
|
|
|
|
sprintf (buf, "CP%u", cp[0]);
|
|
strcpy (resultbuf, buf);
|
|
codeset = resultbuf;
|
|
}
|
|
}
|
|
|
|
# else
|
|
|
|
# error "Add code for other platforms here."
|
|
|
|
# endif
|
|
|
|
/* Resolve alias. */
|
|
{
|
|
# ifdef alias_table_defined
|
|
/* On some platforms, UTF-8 locales are the most frequently used ones.
|
|
Speed up the common case and slow down the less common cases by
|
|
testing for this case first. */
|
|
# if defined __OpenBSD__ || (defined __APPLE__ && defined __MACH__) || defined __sun || defined __CYGWIN__
|
|
if (strcmp (codeset, "UTF-8") == 0)
|
|
goto done_table_lookup;
|
|
else
|
|
# endif
|
|
{
|
|
const struct table_entry * const table = alias_table;
|
|
size_t const table_size =
|
|
sizeof (alias_table) / sizeof (struct table_entry);
|
|
/* The table is sorted. Perform a binary search. */
|
|
size_t hi = table_size;
|
|
size_t lo = 0;
|
|
while (lo < hi)
|
|
{
|
|
/* Invariant:
|
|
for i < lo, strcmp (table[i].alias, codeset) < 0,
|
|
for i >= hi, strcmp (table[i].alias, codeset) > 0. */
|
|
size_t mid = (hi + lo) >> 1; /* >= lo, < hi */
|
|
int cmp = strcmp (table[mid].alias, codeset);
|
|
if (cmp < 0)
|
|
lo = mid + 1;
|
|
else if (cmp > 0)
|
|
hi = mid;
|
|
else
|
|
{
|
|
/* Found an i with
|
|
strcmp (table[i].alias, codeset) == 0. */
|
|
codeset = table[mid].canonical;
|
|
goto done_table_lookup;
|
|
}
|
|
}
|
|
}
|
|
if (0)
|
|
done_table_lookup: ;
|
|
else
|
|
# endif
|
|
{
|
|
/* Did not find it in the table. */
|
|
/* On Mac OS X, all modern locales use the UTF-8 encoding.
|
|
BeOS and Haiku have a single locale, and it has UTF-8 encoding. */
|
|
# if (defined __APPLE__ && defined __MACH__) || defined __BEOS__ || defined __HAIKU__
|
|
codeset = "UTF-8";
|
|
# else
|
|
/* Don't return an empty string. GNU libc and GNU libiconv interpret
|
|
the empty string as denoting "the locale's character encoding",
|
|
thus GNU libiconv would call this function a second time. */
|
|
if (codeset[0] == '\0')
|
|
codeset = "ASCII";
|
|
# endif
|
|
}
|
|
}
|
|
|
|
#else
|
|
|
|
/* On old systems which lack it, use setlocale or getenv. */
|
|
const char *locale = NULL;
|
|
|
|
/* But most old systems don't have a complete set of locales. Some
|
|
(like DJGPP) have only the C locale. Therefore we don't use setlocale
|
|
here; it would return "C" when it doesn't support the locale name the
|
|
user has set. */
|
|
# if 0
|
|
locale = setlocale (LC_CTYPE, NULL);
|
|
# endif
|
|
if (locale == NULL || locale[0] == '\0')
|
|
{
|
|
locale = getenv ("LC_ALL");
|
|
if (locale == NULL || locale[0] == '\0')
|
|
{
|
|
locale = getenv ("LC_CTYPE");
|
|
if (locale == NULL || locale[0] == '\0')
|
|
locale = getenv ("LANG");
|
|
if (locale == NULL)
|
|
locale = "";
|
|
}
|
|
}
|
|
|
|
/* Map locale name to canonical encoding name. */
|
|
{
|
|
# ifdef locale_table_defined
|
|
const struct table_entry * const table = locale_table;
|
|
size_t const table_size =
|
|
sizeof (locale_table) / sizeof (struct table_entry);
|
|
/* The table is sorted. Perform a binary search. */
|
|
size_t hi = table_size;
|
|
size_t lo = 0;
|
|
while (lo < hi)
|
|
{
|
|
/* Invariant:
|
|
for i < lo, strcmp (table[i].locale, locale) < 0,
|
|
for i >= hi, strcmp (table[i].locale, locale) > 0. */
|
|
size_t mid = (hi + lo) >> 1; /* >= lo, < hi */
|
|
int cmp = strcmp (table[mid].locale, locale);
|
|
if (cmp < 0)
|
|
lo = mid + 1;
|
|
else if (cmp > 0)
|
|
hi = mid;
|
|
else
|
|
{
|
|
/* Found an i with
|
|
strcmp (table[i].locale, locale) == 0. */
|
|
codeset = table[mid].canonical;
|
|
goto done_table_lookup;
|
|
}
|
|
}
|
|
if (0)
|
|
done_table_lookup: ;
|
|
else
|
|
# endif
|
|
{
|
|
/* Did not find it in the table. */
|
|
/* On Mac OS X, all modern locales use the UTF-8 encoding.
|
|
BeOS and Haiku have a single locale, and it has UTF-8 encoding. */
|
|
# if (defined __APPLE__ && defined __MACH__) || defined __BEOS__ || defined __HAIKU__
|
|
codeset = "UTF-8";
|
|
# else
|
|
/* The canonical name cannot be determined. */
|
|
/* Don't return an empty string. GNU libc and GNU libiconv interpret
|
|
the empty string as denoting "the locale's character encoding",
|
|
thus GNU libiconv would call this function a second time. */
|
|
codeset = "ASCII";
|
|
# endif
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef DARWIN7
|
|
/* Mac OS X sets MB_CUR_MAX to 1 when LC_ALL=C, and "UTF-8"
|
|
(the default codeset) does not work when MB_CUR_MAX is 1. */
|
|
if (strcmp (codeset, "UTF-8") == 0 && MB_CUR_MAX_L (uselocale (NULL)) <= 1)
|
|
codeset = "ASCII";
|
|
#endif
|
|
|
|
return codeset;
|
|
}
|