/* Determine a canonical name for the current locale's character encoding.
- Copyright (C) 2000-2006, 2008-2010 Free Software Foundation, Inc.
+ Copyright (C) 2000-2006, 2008-2012 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
- with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ with this program; if not, see <http://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>. */
#include <stdlib.h>
#if defined __APPLE__ && defined __MACH__ && HAVE_LANGINFO_CODESET
-# define DARWIN7 /* Darwin 7 or newer, i.e. MacOS X 10.3 or newer */
+# define DARWIN7 /* Darwin 7 or newer, i.e. Mac OS X 10.3 or newer */
#endif
#if defined _WIN32 || defined __WIN32__
-# define WIN32_NATIVE
+# define WINDOWS_NATIVE
#endif
#if defined __EMX__
# endif
#endif
-#if !defined WIN32_NATIVE
+#if !defined WINDOWS_NATIVE
# include <unistd.h>
# if HAVE_LANGINFO_CODESET
# include <langinfo.h>
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# endif
-#elif defined WIN32_NATIVE
+#elif defined WINDOWS_NATIVE
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#endif
#endif
#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
- /* Win32, Cygwin, OS/2, DOS */
+ /* Native Windows, Cygwin, OS/2, DOS */
# define ISSLASH(C) ((C) == '/' || (C) == '\\')
#endif
cp = charset_aliases;
if (cp == NULL)
{
-#if !(defined DARWIN7 || defined VMS || defined WIN32_NATIVE || defined __CYGWIN__)
+#if !(defined DARWIN7 || defined VMS || defined WINDOWS_NATIVE || defined __CYGWIN__)
const char *dir;
const char *base = "charset.alias";
char *file_name;
{
/* Out of memory. */
res_size = 0;
- if (old_res_ptr != NULL)
- free (old_res_ptr);
+ free (old_res_ptr);
break;
}
strcpy (res_ptr + res_size - (l2 + 1) - (l1 + 1), buf1);
"DECKOREAN" "\0" "EUC-KR" "\0";
# endif
-# if defined WIN32_NATIVE || defined __CYGWIN__
+# 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. */
const char *codeset;
const char *aliases;
-#if !(defined WIN32_NATIVE || defined OS2)
+#if !(defined WINDOWS_NATIVE || defined OS2)
# if HAVE_LANGINFO_CODESET
}
}
- /* Woe32 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).
+ /* 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
# endif
-#elif defined WIN32_NATIVE
+#elif defined WINDOWS_NATIVE
static char buf[2 + 10 + 1];
- /* Woe32 has a function returning the locale's codepage as a number:
- GetACP().
+ /* 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.
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 <= 1)
+ codeset = "ASCII";
+#endif
+
+ return codeset;
+}
+
+/* A variant of the above, without calls to `setlocale', `nl_langinfo',
+ etc. */
+const char *
+environ_locale_charset (void)
+{
+ static char buf[2 + 10 + 1];
+ const char *codeset, *aliases;
+ const char *locale = NULL;
+
+ 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;
+ }
+ }
+ else if (strcmp (locale, "C") == 0)
+ {
+ strcpy (buf, "ASCII");
+ return buf;
+ }
+ else
+ codeset = "";
+ }
+ else
+ 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')
+ /* Default to Latin-1, for backward compatibility with Guile 1.8. */
+ codeset = "ISO-8859-1";
+
return codeset;
}
HCoop / bpt / guile.git / blobdiff