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-rw-r--r--lib/unicase/locale-language.c55
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diff --git a/lib/unicase/locale-language.c b/lib/unicase/locale-language.c
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+/* Language code of current locale.
+ Copyright (C) 2009 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 2009.
+
+ 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 the Free Software Foundation; either version 3 of the License, 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
+ 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, see <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include "unicase.h"
+
+#include <locale.h>
+#include <string.h>
+
+#include "localename.h"
+
+#include "unicase/locale-languages.h"
+
+const char *
+uc_locale_language (void)
+{
+ const char *locale_name = gl_locale_name (LC_CTYPE, "LC_CTYPE");
+ const char *p;
+
+ /* Find the end of the language portion. */
+ p = locale_name;
+ while (*p != '\0' && *p != '_' && *p != '.' && *p != '@')
+ p++;
+
+ /* Return a statically allocated pointer to the language portion, so that the
+ caller of this function does not need to free() the result.
+ We could use a dynamically built unification table. But given that the
+ set of possible languages is small, it is easier (and excludes ENOMEM
+ error conditions) to allocate the unification table statically. */
+ if (p != locale_name)
+ {
+ const char *language =
+ uc_locale_languages_lookup (locale_name, p - locale_name);
+ if (language != NULL)
+ return language;
+ }
+
+ return "";
+}