textdomain.c
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上传日期:2007-01-04
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文件大小:3k
- /* Implementation of the textdomain(3) function.
- Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
- Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU 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 General Public License for more details.
- You should have received a copy of the GNU 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
- #if defined STDC_HEADERS || defined _LIBC
- # include <stdlib.h>
- #endif
- #if defined STDC_HEADERS || defined HAVE_STRING_H || defined _LIBC
- # include <string.h>
- #else
- # include <strings.h>
- # ifndef memcpy
- # define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num)
- # endif
- #endif
- #ifdef _LIBC
- # include <libintl.h>
- #else
- # include "libgettext.h"
- #endif
- /* @@ end of prolog @@ */
- /* Name of the default text domain. */
- extern const char _nl_default_default_domain[];
- /* Default text domain in which entries for gettext(3) are to be found. */
- extern const char *_nl_current_default_domain;
- /* 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 textdomain__
- #endif
- /* 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 *old;
- /* A NULL pointer requests the current setting. */
- if (domainname == NULL)
- return (char *) _nl_current_default_domain;
- old = (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;
- 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
- _nl_current_default_domain = strdup (domainname);
- #else
- size_t len = strlen (domainname) + 1;
- char *cp = (char *) malloc (len);
- if (cp != NULL)
- memcpy (cp, domainname, len);
- _nl_current_default_domain = cp;
- #endif
- }
- if (old != _nl_default_default_domain)
- free (old);
- return (char *) _nl_current_default_domain;
- }
- #ifdef _LIBC
- /* Alias for function name in GNU C Library. */
- weak_alias (__textdomain, textdomain);
- #endif