/* Determine a canonical name for the current locale's character encoding.
- Copyright (C) 2000-2006, 2008-2018 Free Software Foundation, Inc.
+ Copyright (C) 2000-2006, 2008-2016 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
- with this program; if not, see <https://www.gnu.org/licenses/>. */
+ with this program; if not, see <http://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>. */
/* Specification. */
#include "localcharset.h"
+#include <fcntl.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
# define DARWIN7 /* Darwin 7 or newer, i.e. Mac OS X 10.3 or newer */
#endif
-#if defined _WIN32 && !defined __CYGWIN__
+#if defined _WIN32 || defined __WIN32__
# define WINDOWS_NATIVE
# include <locale.h>
#endif
#endif
#if !defined WINDOWS_NATIVE
+# include <unistd.h>
# if HAVE_LANGINFO_CODESET
# include <langinfo.h>
# else
-# if 0 /* see comment regarding use of setlocale(), below */
+# if 0 /* see comment below */
# include <locale.h>
# endif
# endif
# include <xlocale.h>
#endif
+#if ENABLE_RELOCATABLE
+# include "relocatable.h"
+#else
+# define relocate(pathname) (pathname)
+#endif
+
+/* Get LIBDIR. */
+#ifndef LIBDIR
+# include "configmake.h"
+#endif
+
+/* Define O_NOFOLLOW to 0 on platforms where it does not exist. */
+#ifndef O_NOFOLLOW
+# define O_NOFOLLOW 0
+#endif
+
+#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
+ /* Native Windows, Cygwin, OS/2, DOS */
+# define ISSLASH(C) ((C) == '/' || (C) == '\\')
+#endif
-#if HAVE_LANGINFO_CODESET || defined WINDOWS_NATIVE || defined OS2
+#ifndef DIRECTORY_SEPARATOR
+# define DIRECTORY_SEPARATOR '/'
+#endif
-/* On these platforms, we use a mapping from non-canonical encoding name
- to GNU canonical encoding name. */
+#ifndef ISSLASH
+# define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR)
+#endif
-/* With glibc-2.1 or newer, we don't need any canonicalization,
- because glibc has iconv and both glibc and libiconv support all
- GNU canonical names directly. */
-# if !((defined __GNU_LIBRARY__ && __GLIBC__ >= 2) || defined __UCLIBC__)
+#if HAVE_DECL_GETC_UNLOCKED
+# undef getc
+# define getc getc_unlocked
+#endif
-struct table_entry
+/* The following static variable is declared 'volatile' to avoid a
+ possible multithread problem in the function get_charset_aliases. If we
+ are running in a threaded environment, and if two threads initialize
+ 'charset_aliases' simultaneously, both will produce the same value,
+ and everything will be ok if the two assignments to 'charset_aliases'
+ are atomic. But I don't know what will happen if the two assignments mix. */
+#if __STDC__ != 1
+# define volatile /* empty */
+#endif
+/* Pointer to the contents of the charset.alias file, if it has already been
+ read, else NULL. Its format is:
+ ALIAS_1 '\0' CANONICAL_1 '\0' ... ALIAS_n '\0' CANONICAL_n '\0' '\0' */
+static const char * volatile charset_aliases;
+
+/* Return a pointer to the contents of the charset.alias file. */
+static const char *
+get_charset_aliases (void)
{
- const char alias[11+1];
- const char canonical[11+1];
-};
-
-/* Table of platform-dependent mappings, sorted in ascending order. */
-static const struct table_entry alias_table[] =
- {
-# if defined __FreeBSD__ /* FreeBSD */
- /*{ "ARMSCII-8", "ARMSCII-8" },*/
- { "Big5", "BIG5" },
- { "C", "ASCII" },
- /*{ "CP1131", "CP1131" },*/
- /*{ "CP1251", "CP1251" },*/
- /*{ "CP866", "CP866" },*/
- /*{ "GB18030", "GB18030" },*/
- /*{ "GB2312", "GB2312" },*/
- /*{ "GBK", "GBK" },*/
- /*{ "ISCII-DEV", "?" },*/
- { "ISO8859-1", "ISO-8859-1" },
- { "ISO8859-13", "ISO-8859-13" },
- { "ISO8859-15", "ISO-8859-15" },
- { "ISO8859-2", "ISO-8859-2" },
- { "ISO8859-5", "ISO-8859-5" },
- { "ISO8859-7", "ISO-8859-7" },
- { "ISO8859-9", "ISO-8859-9" },
- /*{ "KOI8-R", "KOI8-R" },*/
- /*{ "KOI8-U", "KOI8-U" },*/
- { "SJIS", "SHIFT_JIS" },
- { "US-ASCII", "ASCII" },
- { "eucCN", "GB2312" },
- { "eucJP", "EUC-JP" },
- { "eucKR", "EUC-KR" }
-# define alias_table_defined
-# endif
-# if defined __NetBSD__ /* NetBSD */
- { "646", "ASCII" },
- /*{ "ARMSCII-8", "ARMSCII-8" },*/
- /*{ "BIG5", "BIG5" },*/
- { "Big5-HKSCS", "BIG5-HKSCS" },
- /*{ "CP1251", "CP1251" },*/
- /*{ "CP866", "CP866" },*/
- /*{ "GB18030", "GB18030" },*/
- /*{ "GB2312", "GB2312" },*/
- { "ISO8859-1", "ISO-8859-1" },
- { "ISO8859-13", "ISO-8859-13" },
- { "ISO8859-15", "ISO-8859-15" },
- { "ISO8859-2", "ISO-8859-2" },
- { "ISO8859-4", "ISO-8859-4" },
- { "ISO8859-5", "ISO-8859-5" },
- { "ISO8859-7", "ISO-8859-7" },
- /*{ "KOI8-R", "KOI8-R" },*/
- /*{ "KOI8-U", "KOI8-U" },*/
- /*{ "PT154", "PT154" },*/
- { "SJIS", "SHIFT_JIS" },
- { "eucCN", "GB2312" },
- { "eucJP", "EUC-JP" },
- { "eucKR", "EUC-KR" },
- { "eucTW", "EUC-TW" }
-# define alias_table_defined
-# endif
-# if defined __OpenBSD__ /* OpenBSD */
- { "646", "ASCII" },
- { "ISO8859-1", "ISO-8859-1" },
- { "ISO8859-13", "ISO-8859-13" },
- { "ISO8859-15", "ISO-8859-15" },
- { "ISO8859-2", "ISO-8859-2" },
- { "ISO8859-4", "ISO-8859-4" },
- { "ISO8859-5", "ISO-8859-5" },
- { "ISO8859-7", "ISO-8859-7" }
-# define alias_table_defined
-# endif
-# if defined __APPLE__ && defined __MACH__ /* Mac OS X */
- /* Darwin 7.5 has nl_langinfo(CODESET), but sometimes its value is
- useless:
- - It returns the empty string when LANG is set to a locale of the
- form ll_CC, although ll_CC/LC_CTYPE is a symlink to an UTF-8
- LC_CTYPE file.
- - The environment variables LANG, LC_CTYPE, LC_ALL are not set by
- the system; nl_langinfo(CODESET) returns "US-ASCII" in this case.
- - The documentation says:
- "... all code that calls BSD system routines should ensure
- that the const *char parameters of these routines are in UTF-8
- encoding. All BSD system functions expect their string
- parameters to be in UTF-8 encoding and nothing else."
- It also says
- "An additional caveat is that string parameters for files,
- paths, and other file-system entities must be in canonical
- UTF-8. In a canonical UTF-8 Unicode string, all decomposable
- characters are decomposed ..."
- but this is not true: You can pass non-decomposed UTF-8 strings
- to file system functions, and it is the OS which will convert
- them to decomposed UTF-8 before accessing the file system.
- - The Apple Terminal application displays UTF-8 by default.
- - However, other applications are free to use different encodings:
- - xterm uses ISO-8859-1 by default.
- - TextEdit uses MacRoman by default.
- We prefer UTF-8 over decomposed UTF-8-MAC because one should
- minimize the use of decomposed Unicode. Unfortunately, through the
- Darwin file system, decomposed UTF-8 strings are leaked into user
- space nevertheless.
- Then there are also the locales with encodings other than US-ASCII
- and UTF-8. These locales can be occasionally useful to users (e.g.
- when grepping through ISO-8859-1 encoded text files), when all their
- file names are in US-ASCII.
- */
- { "ARMSCII-8", "ARMSCII-8" },
- { "Big5", "BIG5" },
- { "Big5HKSCS", "BIG5-HKSCS" },
- { "CP1131", "CP1131" },
- { "CP1251", "CP1251" },
- { "CP866", "CP866" },
- { "CP949", "CP949" },
- { "GB18030", "GB18030" },
- { "GB2312", "GB2312" },
- { "GBK", "GBK" },
- /*{ "ISCII-DEV", "?" },*/
- { "ISO8859-1", "ISO-8859-1" },
- { "ISO8859-13", "ISO-8859-13" },
- { "ISO8859-15", "ISO-8859-15" },
- { "ISO8859-2", "ISO-8859-2" },
- { "ISO8859-4", "ISO-8859-4" },
- { "ISO8859-5", "ISO-8859-5" },
- { "ISO8859-7", "ISO-8859-7" },
- { "ISO8859-9", "ISO-8859-9" },
- { "KOI8-R", "KOI8-R" },
- { "KOI8-U", "KOI8-U" },
- { "PT154", "PT154" },
- { "SJIS", "SHIFT_JIS" },
- { "eucCN", "GB2312" },
- { "eucJP", "EUC-JP" },
- { "eucKR", "EUC-KR" }
-# define alias_table_defined
-# endif
-# if defined _AIX /* AIX */
- /*{ "GBK", "GBK" },*/
- { "IBM-1046", "CP1046" },
- { "IBM-1124", "CP1124" },
- { "IBM-1129", "CP1129" },
- { "IBM-1252", "CP1252" },
- { "IBM-850", "CP850" },
- { "IBM-856", "CP856" },
- { "IBM-921", "ISO-8859-13" },
- { "IBM-922", "CP922" },
- { "IBM-932", "CP932" },
- { "IBM-943", "CP943" },
- { "IBM-eucCN", "GB2312" },
- { "IBM-eucJP", "EUC-JP" },
- { "IBM-eucKR", "EUC-KR" },
- { "IBM-eucTW", "EUC-TW" },
- { "ISO8859-1", "ISO-8859-1" },
- { "ISO8859-15", "ISO-8859-15" },
- { "ISO8859-2", "ISO-8859-2" },
- { "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" },
- { "TIS-620", "TIS-620" },
- /*{ "UTF-8", "UTF-8" },*/
- { "big5", "BIG5" }
-# define alias_table_defined
-# endif
-# if defined __hpux /* HP-UX */
- { "SJIS", "SHIFT_JIS" },
- { "arabic8", "HP-ARABIC8" },
- { "big5", "BIG5" },
- { "cp1251", "CP1251" },
- { "eucJP", "EUC-JP" },
- { "eucKR", "EUC-KR" },
- { "eucTW", "EUC-TW" },
- { "gb18030", "GB18030" },
- { "greek8", "HP-GREEK8" },
- { "hebrew8", "HP-HEBREW8" },
- { "hkbig5", "BIG5-HKSCS" },
- { "hp15CN", "GB2312" },
- { "iso88591", "ISO-8859-1" },
- { "iso885913", "ISO-8859-13" },
- { "iso885915", "ISO-8859-15" },
- { "iso88592", "ISO-8859-2" },
- { "iso88594", "ISO-8859-4" },
- { "iso88595", "ISO-8859-5" },
- { "iso88596", "ISO-8859-6" },
- { "iso88597", "ISO-8859-7" },
- { "iso88598", "ISO-8859-8" },
- { "iso88599", "ISO-8859-9" },
- { "kana8", "HP-KANA8" },
- { "koi8r", "KOI8-R" },
- { "roman8", "HP-ROMAN8" },
- { "tis620", "TIS-620" },
- { "turkish8", "HP-TURKISH8" },
- { "utf8", "UTF-8" }
-# define alias_table_defined
-# endif
-# if defined __sgi /* IRIX */
- { "ISO8859-1", "ISO-8859-1" },
- { "ISO8859-15", "ISO-8859-15" },
- { "ISO8859-2", "ISO-8859-2" },
- { "ISO8859-5", "ISO-8859-5" },
- { "ISO8859-7", "ISO-8859-7" },
- { "ISO8859-9", "ISO-8859-9" },
- { "eucCN", "GB2312" },
- { "eucJP", "EUC-JP" },
- { "eucKR", "EUC-KR" },
- { "eucTW", "EUC-TW" }
-# define alias_table_defined
-# endif
-# if defined __osf__ /* OSF/1 */
- /*{ "GBK", "GBK" },*/
- { "ISO8859-1", "ISO-8859-1" },
- { "ISO8859-15", "ISO-8859-15" },
- { "ISO8859-2", "ISO-8859-2" },
- { "ISO8859-4", "ISO-8859-4" },
- { "ISO8859-5", "ISO-8859-5" },
- { "ISO8859-7", "ISO-8859-7" },
- { "ISO8859-8", "ISO-8859-8" },
- { "ISO8859-9", "ISO-8859-9" },
- { "KSC5601", "CP949" },
- { "SJIS", "SHIFT_JIS" },
- { "TACTIS", "TIS-620" },
- /*{ "UTF-8", "UTF-8" },*/
- { "big5", "BIG5" },
- { "cp850", "CP850" },
- { "dechanyu", "DEC-HANYU" },
- { "dechanzi", "GB2312" },
- { "deckanji", "DEC-KANJI" },
- { "deckorean", "EUC-KR" },
- { "eucJP", "EUC-JP" },
- { "eucKR", "EUC-KR" },
- { "eucTW", "EUC-TW" },
- { "sdeckanji", "EUC-JP" }
-# define alias_table_defined
-# endif
-# if defined __sun /* Solaris */
- { "5601", "EUC-KR" },
- { "646", "ASCII" },
- /*{ "BIG5", "BIG5" },*/
- { "Big5-HKSCS", "BIG5-HKSCS" },
- { "GB18030", "GB18030" },
- /*{ "GBK", "GBK" },*/
- { "ISO8859-1", "ISO-8859-1" },
- { "ISO8859-11", "TIS-620" },
- { "ISO8859-13", "ISO-8859-13" },
- { "ISO8859-15", "ISO-8859-15" },
- { "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" },
- { "PCK", "SHIFT_JIS" },
- { "TIS620.2533", "TIS-620" },
- /*{ "UTF-8", "UTF-8" },*/
- { "ansi-1251", "CP1251" },
- { "cns11643", "EUC-TW" },
- { "eucJP", "EUC-JP" },
- { "gb2312", "GB2312" },
- { "koi8-r", "KOI8-R" }
-# define alias_table_defined
-# endif
-# if defined __minix /* Minix */
- { "646", "ASCII" }
-# define alias_table_defined
-# endif
-# if defined WINDOWS_NATIVE || defined __CYGWIN__ /* Windows */
- { "CP1361", "JOHAB" },
- { "CP20127", "ASCII" },
- { "CP20866", "KOI8-R" },
- { "CP20936", "GB2312" },
- { "CP21866", "KOI8-RU" },
- { "CP28591", "ISO-8859-1" },
- { "CP28592", "ISO-8859-2" },
- { "CP28593", "ISO-8859-3" },
- { "CP28594", "ISO-8859-4" },
- { "CP28595", "ISO-8859-5" },
- { "CP28596", "ISO-8859-6" },
- { "CP28597", "ISO-8859-7" },
- { "CP28598", "ISO-8859-8" },
- { "CP28599", "ISO-8859-9" },
- { "CP28605", "ISO-8859-15" },
- { "CP38598", "ISO-8859-8" },
- { "CP51932", "EUC-JP" },
- { "CP51936", "GB2312" },
- { "CP51949", "EUC-KR" },
- { "CP51950", "EUC-TW" },
- { "CP54936", "GB18030" },
- { "CP65001", "UTF-8" },
- { "CP936", "GBK" }
-# define alias_table_defined
-# endif
-# if defined OS2 /* OS/2 */
- /* The list of encodings is taken from "List of OS/2 Codepages"
- by Alex Taylor:
- <http://altsan.org/os2/toolkits/uls/index.html#codepages>.
- See also "IBM Globalization - Code page identifiers":
- <https://www-01.ibm.com/software/globalization/cp/cp_cpgid.html>. */
- { "CP1089", "ISO-8859-6" },
- { "CP1208", "UTF-8" },
- { "CP1381", "GB2312" },
- { "CP1386", "GBK" },
- { "CP3372", "EUC-JP" },
- { "CP813", "ISO-8859-7" },
- { "CP819", "ISO-8859-1" },
- { "CP878", "KOI8-R" },
- { "CP912", "ISO-8859-2" },
- { "CP913", "ISO-8859-3" },
- { "CP914", "ISO-8859-4" },
- { "CP915", "ISO-8859-5" },
- { "CP916", "ISO-8859-8" },
- { "CP920", "ISO-8859-9" },
- { "CP921", "ISO-8859-13" },
- { "CP923", "ISO-8859-15" },
- { "CP954", "EUC-JP" },
- { "CP964", "EUC-TW" },
- { "CP970", "EUC-KR" }
-# 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
- };
+ const char *cp;
-# endif
+ cp = charset_aliases;
+ if (cp == NULL)
+ {
+#if !(defined DARWIN7 || defined VMS || defined WINDOWS_NATIVE || defined __CYGWIN__ || defined OS2)
+ const char *dir;
+ const char *base = "charset.alias";
+ char *file_name;
+
+ /* Make it possible to override the charset.alias location. This is
+ necessary for running the testsuite before "make install". */
+ dir = getenv ("CHARSETALIASDIR");
+ if (dir == NULL || dir[0] == '\0')
+ dir = relocate (LIBDIR);
+
+ /* Concatenate dir and base into freshly allocated file_name. */
+ {
+ size_t dir_len = strlen (dir);
+ size_t base_len = strlen (base);
+ int add_slash = (dir_len > 0 && !ISSLASH (dir[dir_len - 1]));
+ file_name = (char *) malloc (dir_len + add_slash + base_len + 1);
+ if (file_name != NULL)
+ {
+ memcpy (file_name, dir, dir_len);
+ if (add_slash)
+ file_name[dir_len] = DIRECTORY_SEPARATOR;
+ memcpy (file_name + dir_len + add_slash, base, base_len + 1);
+ }
+ }
+
+ if (file_name == NULL)
+ /* Out of memory. Treat the file as empty. */
+ cp = "";
+ else
+ {
+ int fd;
+
+ /* Open the file. Reject symbolic links on platforms that support
+ O_NOFOLLOW. This is a security feature. Without it, an attacker
+ could retrieve parts of the contents (namely, the tail of the
+ first line that starts with "* ") of an arbitrary file by placing
+ a symbolic link to that file under the name "charset.alias" in
+ some writable directory and defining the environment variable
+ CHARSETALIASDIR to point to that directory. */
+ fd = open (file_name,
+ O_RDONLY | (HAVE_WORKING_O_NOFOLLOW ? O_NOFOLLOW : 0));
+ if (fd < 0)
+ /* File not found. Treat it as empty. */
+ cp = "";
+ else
+ {
+ FILE *fp;
+
+ fp = fdopen (fd, "r");
+ if (fp == NULL)
+ {
+ /* Out of memory. Treat the file as empty. */
+ close (fd);
+ cp = "";
+ }
+ else
+ {
+ /* Parse the file's contents. */
+ char *res_ptr = NULL;
+ size_t res_size = 0;
+
+ for (;;)
+ {
+ int c;
+ char buf1[50+1];
+ char buf2[50+1];
+ size_t l1, l2;
+ char *old_res_ptr;
+
+ c = getc (fp);
+ if (c == EOF)
+ break;
+ if (c == '\n' || c == ' ' || c == '\t')
+ continue;
+ if (c == '#')
+ {
+ /* Skip comment, to end of line. */
+ do
+ c = getc (fp);
+ while (!(c == EOF || c == '\n'));
+ if (c == EOF)
+ break;
+ continue;
+ }
+ ungetc (c, fp);
+ if (fscanf (fp, "%50s %50s", buf1, buf2) < 2)
+ break;
+ l1 = strlen (buf1);
+ l2 = strlen (buf2);
+ old_res_ptr = res_ptr;
+ if (res_size == 0)
+ {
+ res_size = l1 + 1 + l2 + 1;
+ res_ptr = (char *) malloc (res_size + 1);
+ }
+ else
+ {
+ res_size += l1 + 1 + l2 + 1;
+ res_ptr = (char *) realloc (res_ptr, res_size + 1);
+ }
+ if (res_ptr == NULL)
+ {
+ /* Out of memory. */
+ res_size = 0;
+ free (old_res_ptr);
+ break;
+ }
+ strcpy (res_ptr + res_size - (l2 + 1) - (l1 + 1), buf1);
+ strcpy (res_ptr + res_size - (l2 + 1), buf2);
+ }
+ fclose (fp);
+ if (res_size == 0)
+ cp = "";
+ else
+ {
+ *(res_ptr + res_size) = '\0';
+ cp = res_ptr;
+ }
+ }
+ }
+
+ free (file_name);
+ }
#else
-/* On these platforms, we use a mapping from locale name to GNU canonical
- encoding name. */
+# if defined DARWIN7
+ /* To avoid the trouble of installing a file that is shared by many
+ GNU packages -- many packaging systems have problems with this --,
+ simply inline the aliases here. */
+ cp = "ISO8859-1" "\0" "ISO-8859-1" "\0"
+ "ISO8859-2" "\0" "ISO-8859-2" "\0"
+ "ISO8859-4" "\0" "ISO-8859-4" "\0"
+ "ISO8859-5" "\0" "ISO-8859-5" "\0"
+ "ISO8859-7" "\0" "ISO-8859-7" "\0"
+ "ISO8859-9" "\0" "ISO-8859-9" "\0"
+ "ISO8859-13" "\0" "ISO-8859-13" "\0"
+ "ISO8859-15" "\0" "ISO-8859-15" "\0"
+ "KOI8-R" "\0" "KOI8-R" "\0"
+ "KOI8-U" "\0" "KOI8-U" "\0"
+ "CP866" "\0" "CP866" "\0"
+ "CP949" "\0" "CP949" "\0"
+ "CP1131" "\0" "CP1131" "\0"
+ "CP1251" "\0" "CP1251" "\0"
+ "eucCN" "\0" "GB2312" "\0"
+ "GB2312" "\0" "GB2312" "\0"
+ "eucJP" "\0" "EUC-JP" "\0"
+ "eucKR" "\0" "EUC-KR" "\0"
+ "Big5" "\0" "BIG5" "\0"
+ "Big5HKSCS" "\0" "BIG5-HKSCS" "\0"
+ "GBK" "\0" "GBK" "\0"
+ "GB18030" "\0" "GB18030" "\0"
+ "SJIS" "\0" "SHIFT_JIS" "\0"
+ "ARMSCII-8" "\0" "ARMSCII-8" "\0"
+ "PT154" "\0" "PT154" "\0"
+ /*"ISCII-DEV" "\0" "?" "\0"*/
+ "*" "\0" "UTF-8" "\0";
+# endif
-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
+# if defined VMS
+ /* To avoid the troubles of an extra file charset.alias_vms in the
+ sources of many GNU packages, simply inline the aliases here. */
+ /* 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". */
+ cp = "ISO8859-1" "\0" "ISO-8859-1" "\0"
+ "ISO8859-2" "\0" "ISO-8859-2" "\0"
+ "ISO8859-5" "\0" "ISO-8859-5" "\0"
+ "ISO8859-7" "\0" "ISO-8859-7" "\0"
+ "ISO8859-8" "\0" "ISO-8859-8" "\0"
+ "ISO8859-9" "\0" "ISO-8859-9" "\0"
+ /* Japanese */
+ "eucJP" "\0" "EUC-JP" "\0"
+ "SJIS" "\0" "SHIFT_JIS" "\0"
+ "DECKANJI" "\0" "DEC-KANJI" "\0"
+ "SDECKANJI" "\0" "EUC-JP" "\0"
+ /* Chinese */
+ "eucTW" "\0" "EUC-TW" "\0"
+ "DECHANYU" "\0" "DEC-HANYU" "\0"
+ "DECHANZI" "\0" "GB2312" "\0"
+ /* Korean */
+ "DECKOREAN" "\0" "EUC-KR" "\0";
# 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
+
+# if defined WINDOWS_NATIVE || defined __CYGWIN__
+ /* To avoid the troubles of installing a separate file in the same
+ directory as the DLL and of retrieving the DLL's directory at
+ runtime, simply inline the aliases here. */
+
+ cp = "CP936" "\0" "GBK" "\0"
+ "CP1361" "\0" "JOHAB" "\0"
+ "CP20127" "\0" "ASCII" "\0"
+ "CP20866" "\0" "KOI8-R" "\0"
+ "CP20936" "\0" "GB2312" "\0"
+ "CP21866" "\0" "KOI8-RU" "\0"
+ "CP28591" "\0" "ISO-8859-1" "\0"
+ "CP28592" "\0" "ISO-8859-2" "\0"
+ "CP28593" "\0" "ISO-8859-3" "\0"
+ "CP28594" "\0" "ISO-8859-4" "\0"
+ "CP28595" "\0" "ISO-8859-5" "\0"
+ "CP28596" "\0" "ISO-8859-6" "\0"
+ "CP28597" "\0" "ISO-8859-7" "\0"
+ "CP28598" "\0" "ISO-8859-8" "\0"
+ "CP28599" "\0" "ISO-8859-9" "\0"
+ "CP28605" "\0" "ISO-8859-15" "\0"
+ "CP38598" "\0" "ISO-8859-8" "\0"
+ "CP51932" "\0" "EUC-JP" "\0"
+ "CP51936" "\0" "GB2312" "\0"
+ "CP51949" "\0" "EUC-KR" "\0"
+ "CP51950" "\0" "EUC-TW" "\0"
+ "CP54936" "\0" "GB18030" "\0"
+ "CP65001" "\0" "UTF-8" "\0";
# endif
-# ifndef locale_table_defined
- /* Just a dummy entry, to avoid a C syntax error. */
- { "", "" }
+# if defined OS2
+ /* To avoid the troubles of installing a separate file in the same
+ directory as the DLL and of retrieving the DLL's directory at
+ runtime, simply inline the aliases here. */
+
+ /* The list of encodings is taken from "List of OS/2 Codepages"
+ by Alex Taylor:
+ <http://altsan.org/os2/toolkits/uls/index.html#codepages>.
+ See also "IBM Globalization - Code page identifiers":
+ <http://www-01.ibm.com/software/globalization/cp/cp_cpgid.html>. */
+ cp = "CP813" "\0" "ISO-8859-7" "\0"
+ "CP878" "\0" "KOI8-R" "\0"
+ "CP819" "\0" "ISO-8859-1" "\0"
+ "CP912" "\0" "ISO-8859-2" "\0"
+ "CP913" "\0" "ISO-8859-3" "\0"
+ "CP914" "\0" "ISO-8859-4" "\0"
+ "CP915" "\0" "ISO-8859-5" "\0"
+ "CP916" "\0" "ISO-8859-8" "\0"
+ "CP920" "\0" "ISO-8859-9" "\0"
+ "CP921" "\0" "ISO-8859-13" "\0"
+ "CP923" "\0" "ISO-8859-15" "\0"
+ "CP954" "\0" "EUC-JP" "\0"
+ "CP964" "\0" "EUC-TW" "\0"
+ "CP970" "\0" "EUC-KR" "\0"
+ "CP1089" "\0" "ISO-8859-6" "\0"
+ "CP1208" "\0" "UTF-8" "\0"
+ "CP1381" "\0" "GB2312" "\0"
+ "CP1386" "\0" "GBK" "\0"
+ "CP3372" "\0" "EUC-JP" "\0";
# endif
- };
-
#endif
+ charset_aliases = cp;
+ }
+
+ return cp;
+}
/* Determine the current locale's character encoding, and canonicalize it
- into one of the canonical names listed in localcharset.h.
+ into one of the canonical names listed in config.charset.
The result must not be freed; it is statically allocated.
If the canonical name cannot be determined, the result is a non-canonical
name. */
locale_charset (void)
{
const char *codeset;
+ const char *aliases;
-#if HAVE_LANGINFO_CODESET || defined WINDOWS_NATIVE || defined OS2
+#if !(defined WINDOWS_NATIVE || defined OS2)
# if HAVE_LANGINFO_CODESET
}
# endif
- if (codeset == NULL)
- /* The canonical name cannot be determined. */
- codeset = "";
+# 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 SunOS 4 or 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");
+ }
+ }
+
+ /* On some old systems, one used to set locale = "iso8859_1". On others,
+ you set it to "language_COUNTRY.charset". In any case, we resolve it
+ through the charset.alias file. */
+ codeset = locale;
-# elif defined WINDOWS_NATIVE
+# endif
+
+#elif defined WINDOWS_NATIVE
static char buf[2 + 10 + 1];
current_locale = setlocale (LC_CTYPE, NULL);
pdot = strrchr (current_locale, '.');
- if (pdot && 2 + strlen (pdot + 1) + 1 <= sizeof (buf))
+ if (pdot)
sprintf (buf, "CP%s", pdot + 1);
else
{
}
codeset = buf;
-# elif defined OS2
+#elif defined OS2
const char *locale;
static char buf[2 + 10 + 1];
}
}
-# 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;
+#endif
- /* 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 = "";
- }
- }
+ if (codeset == NULL)
+ /* The canonical name cannot be determined. */
+ codeset = "";
- /* 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)
+ /* Resolve alias. */
+ for (aliases = get_charset_aliases ();
+ *aliases != '\0';
+ aliases += strlen (aliases) + 1, aliases += strlen (aliases) + 1)
+ if (strcmp (codeset, aliases) == 0
+ || (aliases[0] == '*' && aliases[1] == '\0'))
{
- /* 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;
- }
+ codeset = aliases + strlen (aliases) + 1;
+ break;
}
- 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
+ /* 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";
#ifdef DARWIN7
/* Mac OS X sets MB_CUR_MAX to 1 when LC_ALL=C, and "UTF-8"
projects / external / binutils.git / blobdiff