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-rw-r--r--intl/textdomain.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/intl/textdomain.c b/intl/textdomain.c
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+++ b/intl/textdomain.c
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+/* Implementation of the textdomain(3) function.
+ Copyright (C) 1995-1998, 2000-2003, 2005-2006 Free Software Foundation, Inc.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Library General Public License as published
+ by the Free Software Foundation; either version 2, 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library 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. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "gettextP.h"
+#ifdef _LIBC
+# include <libintl.h>
+#else
+# include "libgnuintl.h"
+#endif
+
+/* Handle multi-threaded applications. */
+#ifdef _LIBC
+# include <bits/libc-lock.h>
+# define gl_rwlock_define __libc_rwlock_define
+# define gl_rwlock_wrlock __libc_rwlock_wrlock
+# define gl_rwlock_unlock __libc_rwlock_unlock
+#else
+# include "lock.h"
+#endif
+
+/* @@ end of prolog @@ */
+
+
+/* Names for the libintl functions are a problem. They must not clash
+ with existing names and they should follow ANSI C. But this source
+ code is also used in GNU C Library where the names have a __
+ prefix. So we have to make a difference here. */
+#ifdef _LIBC
+# define TEXTDOMAIN __textdomain
+# ifndef strdup
+# define strdup(str) __strdup (str)
+# endif
+#else
+# define TEXTDOMAIN libintl_textdomain
+#endif
+
+/* Lock variable to protect the global data in the gettext implementation. */
+gl_rwlock_define (extern, _nl_state_lock attribute_hidden)
+
+/* Set the current default message catalog to DOMAINNAME.
+ If DOMAINNAME is null, return the current default.
+ If DOMAINNAME is "", reset to the default of "messages". */
+char *
+TEXTDOMAIN (const char *domainname)
+{
+ char *new_domain;
+ char *old_domain;
+
+ /* A NULL pointer requests the current setting. */
+ if (domainname == NULL)
+ return (char *) _nl_current_default_domain;
+
+ gl_rwlock_wrlock (_nl_state_lock);
+
+ old_domain = (char *) _nl_current_default_domain;
+
+ /* If domain name is the null string set to default domain "messages". */
+ if (domainname[0] == '\0'
+ || strcmp (domainname, _nl_default_default_domain) == 0)
+ {
+ _nl_current_default_domain = _nl_default_default_domain;
+ new_domain = (char *) _nl_current_default_domain;
+ }
+ else if (strcmp (domainname, old_domain) == 0)
+ /* This can happen and people will use it to signal that some
+ environment variable changed. */
+ new_domain = old_domain;
+ else
+ {
+ /* If the following malloc fails `_nl_current_default_domain'
+ will be NULL. This value will be returned and so signals we
+ are out of core. */
+#if defined _LIBC || defined HAVE_STRDUP
+ new_domain = strdup (domainname);
+#else
+ size_t len = strlen (domainname) + 1;
+ new_domain = (char *) malloc (len);
+ if (new_domain != NULL)
+ memcpy (new_domain, domainname, len);
+#endif
+
+ if (new_domain != NULL)
+ _nl_current_default_domain = new_domain;
+ }
+
+ /* We use this possibility to signal a change of the loaded catalogs
+ since this is most likely the case and there is no other easy we
+ to do it. Do it only when the call was successful. */
+ if (new_domain != NULL)
+ {
+ ++_nl_msg_cat_cntr;
+
+ if (old_domain != new_domain && old_domain != _nl_default_default_domain)
+ free (old_domain);
+ }
+
+ gl_rwlock_unlock (_nl_state_lock);
+
+ return new_domain;
+}
+
+#ifdef _LIBC
+/* Alias for function name in GNU C Library. */
+weak_alias (__textdomain, textdomain);
+#endif