#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
+#include <locale.h>
#include <string.h>
#include <errno.h>
#ifdef HAVE_PWD_H
return (G_CONST_RETURN gchar * G_CONST_RETURN *) conf_dir_vector;
}
+static GHashTable *alias_table = NULL;
+
+/* read an alias file for the locales */
+static void
+read_aliases (gchar *file)
+{
+ FILE *fp;
+ char buf[256];
+
+ if (!alias_table)
+ alias_table = g_hash_table_new (g_str_hash, g_str_equal);
+ fp = fopen (file,"r");
+ if (!fp)
+ return;
+ while (fgets (buf, 256, fp))
+ {
+ char *p, *q;
+
+ g_strstrip (buf);
+
+ /* Line is a comment */
+ if ((buf[0] == '#') || (buf[0] == '\0'))
+ continue;
+
+ /* Reads first column */
+ for (p = buf, q = NULL; *p; p++) {
+ if ((*p == '\t') || (*p == ' ') || (*p == ':')) {
+ *p = '\0';
+ q = p+1;
+ while ((*q == '\t') || (*q == ' ')) {
+ q++;
+ }
+ break;
+ }
+ }
+ /* The line only had one column */
+ if (!q || *q == '\0')
+ continue;
+
+ /* Read second column */
+ for (p = q; *p; p++) {
+ if ((*p == '\t') || (*p == ' ')) {
+ *p = '\0';
+ break;
+ }
+ }
+
+ /* Add to alias table if necessary */
+ if (!g_hash_table_lookup (alias_table, buf)) {
+ g_hash_table_insert (alias_table, g_strdup (buf), g_strdup (q));
+ }
+ }
+ fclose (fp);
+}
+
+static char *
+unalias_lang (char *lang)
+{
+ char *p;
+ int i;
+
+ if (!alias_table)
+ read_aliases ("/usr/share/locale/locale.alias");
+
+ i = 0;
+ while ((p = g_hash_table_lookup (alias_table, lang)) && (strcmp (p, lang) != 0))
+ {
+ lang = p;
+ if (i++ == 30)
+ {
+ static gboolean said_before = FALSE;
+ if (!said_before)
+ g_warning ("Too many alias levels for a locale, "
+ "may indicate a loop");
+ said_before = TRUE;
+ return lang;
+ }
+ }
+ return lang;
+}
+
+/* Mask for components of locale spec. The ordering here is from
+ * least significant to most significant
+ */
+enum
+{
+ COMPONENT_CODESET = 1 << 0,
+ COMPONENT_TERRITORY = 1 << 1,
+ COMPONENT_MODIFIER = 1 << 2
+};
+
+/* Break an X/Open style locale specification into components
+ */
+static guint
+explode_locale (const gchar *locale,
+ gchar **language,
+ gchar **territory,
+ gchar **codeset,
+ gchar **modifier)
+{
+ const gchar *uscore_pos;
+ const gchar *at_pos;
+ const gchar *dot_pos;
+
+ guint mask = 0;
+
+ uscore_pos = strchr (locale, '_');
+ dot_pos = strchr (uscore_pos ? uscore_pos : locale, '.');
+ at_pos = strchr (dot_pos ? dot_pos : (uscore_pos ? uscore_pos : locale), '@');
+
+ if (at_pos)
+ {
+ mask |= COMPONENT_MODIFIER;
+ *modifier = g_strdup (at_pos);
+ }
+ else
+ at_pos = locale + strlen (locale);
+
+ if (dot_pos)
+ {
+ mask |= COMPONENT_CODESET;
+ *codeset = g_strndup (dot_pos, at_pos - dot_pos);
+ }
+ else
+ dot_pos = at_pos;
+
+ if (uscore_pos)
+ {
+ mask |= COMPONENT_TERRITORY;
+ *territory = g_strndup (uscore_pos, dot_pos - uscore_pos);
+ }
+ else
+ uscore_pos = dot_pos;
+
+ *language = g_strndup (locale, uscore_pos - locale);
+
+ return mask;
+}
+
+/*
+ * Compute all interesting variants for a given locale name -
+ * by stripping off different components of the value.
+ *
+ * For simplicity, we assume that the locale is in
+ * X/Open format: language[_territory][.codeset][@modifier]
+ *
+ * TODO: Extend this to handle the CEN format (see the GNUlibc docs)
+ * as well. We could just copy the code from glibc wholesale
+ * but it is big, ugly, and complicated, so I'm reluctant
+ * to do so when this should handle 99% of the time...
+ */
+static GSList *
+compute_locale_variants (const gchar *locale)
+{
+ GSList *retval = NULL;
+
+ gchar *language;
+ gchar *territory;
+ gchar *codeset;
+ gchar *modifier;
+
+ guint mask;
+ guint i;
+
+ g_return_val_if_fail (locale != NULL, NULL);
+
+ mask = explode_locale (locale, &language, &territory, &codeset, &modifier);
+
+ /* Iterate through all possible combinations, from least attractive
+ * to most attractive.
+ */
+ for (i = 0; i <= mask; i++)
+ if ((i & ~mask) == 0)
+ {
+ gchar *val = g_strconcat (language,
+ (i & COMPONENT_TERRITORY) ? territory : "",
+ (i & COMPONENT_CODESET) ? codeset : "",
+ (i & COMPONENT_MODIFIER) ? modifier : "",
+ NULL);
+ retval = g_slist_prepend (retval, val);
+ }
+
+ g_free (language);
+ if (mask & COMPONENT_CODESET)
+ g_free (codeset);
+ if (mask & COMPONENT_TERRITORY)
+ g_free (territory);
+ if (mask & COMPONENT_MODIFIER)
+ g_free (modifier);
+
+ return retval;
+}
+
+/* The following is (partly) taken from the gettext package.
+ Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. */
+
+static const gchar *
+guess_category_value (const gchar *category_name)
+{
+ const gchar *retval;
+
+ /* The highest priority value is the `LANGUAGE' environment
+ variable. This is a GNU extension. */
+ retval = g_getenv ("LANGUAGE");
+ if ((retval != NULL) && (retval[0] != '\0'))
+ return retval;
+
+ /* `LANGUAGE' is not set. So we have to proceed with the POSIX
+ methods of looking to `LC_ALL', `LC_xxx', and `LANG'. On some
+ systems this can be done by the `setlocale' function itself. */
+
+ /* Setting of LC_ALL overwrites all other. */
+ retval = g_getenv ("LC_ALL");
+ if ((retval != NULL) && (retval[0] != '\0'))
+ return retval;
+
+ /* Next comes the name of the desired category. */
+ retval = g_getenv (category_name);
+ if ((retval != NULL) && (retval[0] != '\0'))
+ return retval;
+
+ /* Last possibility is the LANG environment variable. */
+ retval = g_getenv ("LANG");
+ if ((retval != NULL) && (retval[0] != '\0'))
+ return retval;
+
+ return NULL;
+}
+
+static gchar **languages = NULL;
+
+/**
+ * g_get_language_names:
+ *
+ * Computes a list of applicable locale names, which can be used to
+ * e.g. construct locale-dependent filenames or search paths. The returned
+ * list is sorted from most desirable to least desirable and always contains
+ * the default locale "C".
+ *
+ * For example, if LANGUAGE=de:en_US, then the returned list is
+ * "de", "en_US", "en", "C".
+ *
+ * This function consults the environment variables <envar>LANGUAGE</envar>,
+ * <envar>LC_ALL</envar>, <envar>LC_MESSAGES</envar> and <envar>LANG</envar>
+ * to find the list of locales specified by the user.
+ *
+ * Return value: a %NULL-terminated array of strings owned by GLib
+ * that must not be modified or freed.
+ *
+ * Since: 2.6
+ **/
+G_CONST_RETURN gchar * G_CONST_RETURN *
+g_get_language_names ()
+{
+ G_LOCK (g_utils_global);
+
+ if (!languages)
+ {
+ const gchar *value;
+ gchar **alist, **a;
+ GSList *list, *l;
+ gint i;
+
+ value = guess_category_value ("LC_MESSAGES");
+ if (!value)
+ value = "C";
+
+ alist = g_strsplit (value, ":", 0);
+ list = NULL;
+ for (a = alist; *a; a++)
+ {
+ gchar *b = unalias_lang (*a);
+ list = g_slist_concat (list, compute_locale_variants (b));
+ }
+ g_strfreev (alist);
+ list = g_slist_append (list, "C");
+
+ languages = g_new (gchar *, g_slist_length (list) + 1);
+ for (l = list, i = 0; l; l = l->next, i++)
+ languages[i] = l->data;
+ languages[i] = NULL;
+
+ g_slist_free (list);
+ }
+
+ G_UNLOCK (g_utils_global);
+
+ return (G_CONST_RETURN gchar * G_CONST_RETURN *) languages;
+}
+
guint
g_direct_hash (gconstpointer v)
{
projects / platform / upstream / glib.git / commitdiff