mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
73cc72729a
This patch moves the gdb/gnulib subdirectory to the top level. It adjusts the top-level build system to build gnulib when necessary, and changes gdb to use this. However, gdbserver still builds its own copy of gnulib, just from the new source location. A small hack was needed to ensure that gnulib is only built when gdb is enabled. The Makefile only provides an ordering -- the directory must be mentioned in configdirs to actually be compiled at all. Most of the patch is just a "git mv" of gnulib, though a few minor path adjustments were needed in some files there. Tested by the buildbot. ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * MAINTAINERS: Add gnulib. * gnulib: New directory, move from gdb/gnulib. * configure.ac (host_libs): Add gnulib. * configure: Rebuild. * Makefile.def (host_modules, dependencies): Add gnulib. * Makefile.in: Rebuild. gdb/ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * gnulib: Move directory to top-level. * configure.ac: Don't configure gnulib. * configure: Rebuild. * common/common-defs.h: Use new path to gnulib. * Makefile.in (GNULIB_BUILDDIR): Now ../gnulib. (GNULIB_H): Remove. (INCGNU): Look in new gnulib location. (HFILES_NO_SRCDIR): Remove gnulib files. (SUBDIR, REQUIRED_SUBDIRS): Remove gnulib. (generated_files): Remove GNULIB_H. ($(LIBGNU), all-lib): Remove targets. (distclean): Don't mention GNULIB_BUILDDIR. ($(GNULIB_BUILDDIR)/Makefile): Remove target. gdb/gdbserver/ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * configure.ac: Use new path to gnulib. * configure: Rebuild. * Makefile.in (INCGNU, $(GNULIB_BUILDDIR)/Makefile): Use new path to gnulib. gnulib/ChangeLog 2019-06-14 Tom Tromey <tom@tromey.com> * update-gnulib.sh: Adjust paths. * Makefile.in: Adjust paths. * configure.ac: Adjust paths. Use ACX_LARGEFILE. * configure: Rebuild.
614 lines
20 KiB
C
614 lines
20 KiB
C
/* Determine a canonical name for the current locale's character encoding.
|
|
|
|
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
|
|
the Free Software Foundation; either version 3, or (at your option)
|
|
any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
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 <http://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Bruno Haible <bruno@clisp.org>. */
|
|
|
|
#include <config.h>
|
|
|
|
/* Specification. */
|
|
#include "localcharset.h"
|
|
|
|
#include <fcntl.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#if defined __APPLE__ && defined __MACH__ && HAVE_LANGINFO_CODESET
|
|
# define DARWIN7 /* Darwin 7 or newer, i.e. Mac OS X 10.3 or newer */
|
|
#endif
|
|
|
|
#if defined _WIN32 || defined __WIN32__
|
|
# define WINDOWS_NATIVE
|
|
# include <locale.h>
|
|
#endif
|
|
|
|
#if defined __EMX__
|
|
/* Assume EMX program runs on OS/2, even if compiled under DOS. */
|
|
# ifndef OS2
|
|
# define OS2
|
|
# endif
|
|
#endif
|
|
|
|
#if !defined WINDOWS_NATIVE
|
|
# include <unistd.h>
|
|
# if HAVE_LANGINFO_CODESET
|
|
# include <langinfo.h>
|
|
# else
|
|
# if 0 /* see comment below */
|
|
# include <locale.h>
|
|
# endif
|
|
# endif
|
|
# ifdef __CYGWIN__
|
|
# define WIN32_LEAN_AND_MEAN
|
|
# include <windows.h>
|
|
# endif
|
|
#elif defined WINDOWS_NATIVE
|
|
# define WIN32_LEAN_AND_MEAN
|
|
# include <windows.h>
|
|
#endif
|
|
#if defined OS2
|
|
# define INCL_DOS
|
|
# include <os2.h>
|
|
#endif
|
|
|
|
/* For MB_CUR_MAX_L */
|
|
#if defined DARWIN7
|
|
# 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
|
|
|
|
#ifndef DIRECTORY_SEPARATOR
|
|
# define DIRECTORY_SEPARATOR '/'
|
|
#endif
|
|
|
|
#ifndef ISSLASH
|
|
# define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR)
|
|
#endif
|
|
|
|
#if HAVE_DECL_GETC_UNLOCKED
|
|
# undef getc
|
|
# define getc getc_unlocked
|
|
#endif
|
|
|
|
/* 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 *cp;
|
|
|
|
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
|
|
|
|
# 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
|
|
|
|
# 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 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
|
|
# 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 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. */
|
|
|
|
#ifdef STATIC
|
|
STATIC
|
|
#endif
|
|
const char *
|
|
locale_charset (void)
|
|
{
|
|
const char *codeset;
|
|
const char *aliases;
|
|
|
|
#if !(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 buf[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 (buf))
|
|
{
|
|
memcpy (buf, dot, modifier - dot);
|
|
buf [modifier - dot] = '\0';
|
|
return buf;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 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. */
|
|
sprintf (buf, "CP%u", GetACP ());
|
|
codeset = buf;
|
|
}
|
|
# 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 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;
|
|
|
|
# endif
|
|
|
|
#elif defined WINDOWS_NATIVE
|
|
|
|
static char buf[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_ALL, NULL);
|
|
char *pdot;
|
|
|
|
/* If they set different locales for different categories,
|
|
'setlocale' will return a semi-colon separated list of locale
|
|
values. To make sure we use the correct one, we choose LC_CTYPE. */
|
|
if (strchr (current_locale, ';'))
|
|
current_locale = setlocale (LC_CTYPE, NULL);
|
|
|
|
pdot = strrchr (current_locale, '.');
|
|
if (pdot)
|
|
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 ());
|
|
}
|
|
codeset = buf;
|
|
|
|
#elif defined OS2
|
|
|
|
const char *locale;
|
|
static char buf[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 (buf))
|
|
{
|
|
memcpy (buf, dot, modifier - dot);
|
|
buf [modifier - dot] = '\0';
|
|
return buf;
|
|
}
|
|
}
|
|
|
|
/* 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
|
|
{
|
|
sprintf (buf, "CP%u", cp[0]);
|
|
codeset = buf;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
if (codeset == NULL)
|
|
/* The canonical name cannot be determined. */
|
|
codeset = "";
|
|
|
|
/* 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'))
|
|
{
|
|
codeset = aliases + strlen (aliases) + 1;
|
|
break;
|
|
}
|
|
|
|
/* 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"
|
|
(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;
|
|
}
|