glibc/intl/bindtextdom.c

177 lines
4.6 KiB
C

/* bindtextdom.c -- implementation of the bindtextdomain(3) function
Copyright (C) 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library. Its master source is NOT part of
the C library, however. The master source lives in /gd/gnu/lib.
The GNU C Library 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 of the
License, or (at your option) any later version.
The GNU C Library 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 the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, 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>
#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
#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] == '\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. Replace the old binding. */
char *new_dirname;
if (strcmp (dirname, _nl_default_dirname) == 0)
new_dirname = (char *) _nl_default_dirname;
else
{
size_t len = strlen (dirname) + 1;
new_dirname = (char *) malloc (len);
if (new_dirname == NULL)
return NULL;
memcpy (new_dirname, dirname, len);
}
if (strcmp (binding->dirname, _nl_default_dirname) != 0)
free (binding->dirname);
binding->dirname = new_dirname;
}
else
{
/* We have to create a new binding. */
size_t len;
struct binding *new_binding =
(struct binding *) malloc (sizeof (*new_binding));
if (new_binding == NULL)
return NULL;
len = strlen (domainname) + 1;
new_binding->domainname = (char *) malloc (len);
if (new_binding->domainname == NULL)
return NULL;
memcpy (new_binding->domainname, domainname, len);
if (strcmp (dirname, _nl_default_dirname) == 0)
new_binding->dirname = (char *) _nl_default_dirname;
else
{
len = strlen (dirname) + 1;
new_binding->dirname = (char *) malloc (len);
if (new_binding->dirname == NULL)
return NULL;
memcpy (new_binding->dirname, dirname, len);
}
/* 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