textdomain.c
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Visual C++
- /* Implementation of the textdomain(3) function.
- Copyright (C) 1995-1998, 2000, 2001, 2002 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
- USA. */
- #ifdef HAVE_CONFIG_H
- # include <config.h>
- #endif
- #include <stdlib.h>
- #include <string.h>
- #ifdef _LIBC
- # include <libintl.h>
- #else
- # include "libgnuintl.h"
- #endif
- #include "gettextP.h"
- #ifdef _LIBC
- /* We have to handle multi-threaded applications. */
- # include <bits/libc-lock.h>
- #else
- /* Provide dummy implementation if this is outside glibc. */
- # define __libc_rwlock_define(CLASS, NAME)
- # define __libc_rwlock_wrlock(NAME)
- # define __libc_rwlock_unlock(NAME)
- #endif
- /* The internal variables in the standalone libintl.a must have different
- names than the internal variables in GNU libc, otherwise programs
- using libintl.a cannot be linked statically. */
- #if !defined _LIBC
- # define _nl_default_default_domain libintl_nl_default_default_domain
- # define _nl_current_default_domain libintl_nl_current_default_domain
- #endif
- /* @@ end of prolog @@ */
- /* Name of the default text domain. */
- extern const char _nl_default_default_domain[] attribute_hidden;
- /* Default text domain in which entries for gettext(3) are to be found. */
- extern const char *_nl_current_default_domain attribute_hidden;
- /* 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. */
- __libc_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 (domainname)
- 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;
- __libc_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] == ' '
- || 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);
- }
- __libc_rwlock_unlock (_nl_state_lock);
- return new_domain;
- }
- #ifdef _LIBC
- /* Alias for function name in GNU C Library. */
- weak_alias (__textdomain, textdomain);
- #endif