STATIC
#endif
const char *
_g_locale_charset_unalias (const char *codeset)
{
const char *aliases;
if (codeset == NULL)
/* The canonical name cannot be determined. */
codeset = "";
/* Resolve alias. */
for (aliases = _g_locale_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";
return codeset;
}
static GHashTable *
get_alias_hash (void)
{
#if !(EMULATOR)
static GHashTable *alias_hash = NULL;
#endif /* EMULATOR */
const char *aliases;
G_LOCK (aliases);
if (!alias_hash)
{
alias_hash = g_hash_table_new (g_str_hash, g_str_equal);
aliases = _g_locale_get_charset_aliases ();
while (*aliases != '\0')
{
const char *canonical;
const char *alias;
const char **alias_array;
int count = 0;
alias = aliases;
aliases += strlen (aliases) + 1;
canonical = aliases;
aliases += strlen (aliases) + 1;
alias_array = g_hash_table_lookup (alias_hash, canonical);
if (alias_array)
{
while (alias_array[count])
count++;
}
alias_array = g_renew (const char *, alias_array, count + 2);
alias_array[count] = alias;
alias_array[count + 1] = NULL;
g_hash_table_insert (alias_hash, (char *)canonical, alias_array);
}
}
STATIC
#endif
const char *
_g_locale_charset ()
{
const char *codeset;
const char *aliases;
#ifndef WIN32
# if HAVE_LANGINFO_CODESET
/* Most systems support nl_langinfo (CODESET) nowadays. */
codeset = nl_langinfo (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 HAVE_SETLOCALE && 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
#else /* WIN32 */
static char buf[2 + 10 + 1];
/* Win32 has a function returning the locale's codepage as a number. */
sprintf (buf, "CP%u", GetACP ());
codeset = buf;
#endif
if (codeset == NULL)
/* The canonical name cannot be determined. */
codeset = "";
/* Resolve alias. */
for (aliases = _g_locale_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;
}
return codeset;
}
