bindtextdom.c
上传用户:xxcykj
上传日期:2007-01-04
资源大小:727k
文件大小:5k
- /* Implementation of the bindtextdomain(3) function
- Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
- 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>
- #else
- # ifdef HAVE_MALLOC_H
- # include <malloc.h>
- # else
- void free ();
- # endif
- #endif
- #if 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
- #include "gettext.h"
- #include "gettextP.h"
- /* @@ end of prolog @@ */
- /* Contains the default location of the message catalogs. */
- extern const char _nl_default_dirname[];
- /* List with bindings of specific domains. */
- extern struct binding *_nl_domain_bindings;
- /* 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 BINDTEXTDOMAIN __bindtextdomain
- # ifndef strdup
- # define strdup(str) __strdup (str)
- # endif
- #else
- # define BINDTEXTDOMAIN bindtextdomain__
- #endif
- /* Specify that the DOMAINNAME message catalog will be found
- in DIRNAME rather than in the system locale data base. */
- char *
- BINDTEXTDOMAIN (domainname, dirname)
- const char *domainname;
- const char *dirname;
- {
- struct binding *binding;
- /* Some sanity checks. */
- if (domainname == NULL || domainname[0] == ' ')
- return NULL;
- for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)
- {
- int compare = strcmp (domainname, binding->domainname);
- if (compare == 0)
- /* We found it! */
- break;
- if (compare < 0)
- {
- /* It is not in the list. */
- binding = NULL;
- break;
- }
- }
- if (dirname == NULL)
- /* The current binding has be to returned. */
- return binding == NULL ? (char *) _nl_default_dirname : binding->dirname;
- if (binding != NULL)
- {
- /* The domain is already bound. If the new value and the old
- one are equal we simply do nothing. Otherwise replace the
- old binding. */
- if (strcmp (dirname, binding->dirname) != 0)
- {
- char *new_dirname;
- if (strcmp (dirname, _nl_default_dirname) == 0)
- new_dirname = (char *) _nl_default_dirname;
- else
- {
- #if defined _LIBC || defined HAVE_STRDUP
- new_dirname = strdup (dirname);
- if (new_dirname == NULL)
- return NULL;
- #else
- size_t len = strlen (dirname) + 1;
- new_dirname = (char *) malloc (len);
- if (new_dirname == NULL)
- return NULL;
- memcpy (new_dirname, dirname, len);
- #endif
- }
- if (binding->dirname != _nl_default_dirname)
- free (binding->dirname);
- binding->dirname = new_dirname;
- }
- }
- else
- {
- /* We have to create a new binding. */
- #if !defined _LIBC && !defined HAVE_STRDUP
- size_t len;
- #endif
- struct binding *new_binding =
- (struct binding *) malloc (sizeof (*new_binding));
- if (new_binding == NULL)
- return NULL;
- #if defined _LIBC || defined HAVE_STRDUP
- new_binding->domainname = strdup (domainname);
- if (new_binding->domainname == NULL)
- return NULL;
- #else
- len = strlen (domainname) + 1;
- new_binding->domainname = (char *) malloc (len);
- if (new_binding->domainname == NULL)
- return NULL;
- memcpy (new_binding->domainname, domainname, len);
- #endif
- if (strcmp (dirname, _nl_default_dirname) == 0)
- new_binding->dirname = (char *) _nl_default_dirname;
- else
- {
- #if defined _LIBC || defined HAVE_STRDUP
- new_binding->dirname = strdup (dirname);
- if (new_binding->dirname == NULL)
- return NULL;
- #else
- len = strlen (dirname) + 1;
- new_binding->dirname = (char *) malloc (len);
- if (new_binding->dirname == NULL)
- return NULL;
- memcpy (new_binding->dirname, dirname, len);
- #endif
- }
- /* Now enqueue it. */
- if (_nl_domain_bindings == NULL
- || strcmp (domainname, _nl_domain_bindings->domainname) < 0)
- {
- new_binding->next = _nl_domain_bindings;
- _nl_domain_bindings = new_binding;
- }
- else
- {
- binding = _nl_domain_bindings;
- while (binding->next != NULL
- && strcmp (domainname, binding->next->domainname) > 0)
- binding = binding->next;
- new_binding->next = binding->next;
- binding->next = new_binding;
- }
- binding = new_binding;
- }
- return binding->dirname;
- }
- #ifdef _LIBC
- /* Alias for function name in GNU C Library. */
- weak_alias (__bindtextdomain, bindtextdomain);
- #endif