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330 |
jeremybenn |
/* Implementation of the bindtextdomain(3) function
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Copyright (C) 1995-1998, 2000, 2001, 2002 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published
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by the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
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USA. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef _LIBC
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# include <libintl.h>
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#else
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# include "libgnuintl.h"
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#endif
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#include "gettextP.h"
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#ifdef _LIBC
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/* We have to handle multi-threaded applications. */
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# include <bits/libc-lock.h>
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#else
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/* Provide dummy implementation if this is outside glibc. */
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# define __libc_rwlock_define(CLASS, NAME)
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# define __libc_rwlock_wrlock(NAME)
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# define __libc_rwlock_unlock(NAME)
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#endif
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/* The internal variables in the standalone libintl.a must have different
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names than the internal variables in GNU libc, otherwise programs
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using libintl.a cannot be linked statically. */
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#if !defined _LIBC
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# define _nl_default_dirname libintl_nl_default_dirname
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# define _nl_domain_bindings libintl_nl_domain_bindings
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#endif
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/* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>. */
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#ifndef offsetof
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# define offsetof(type,ident) ((size_t)&(((type*)0)->ident))
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#endif
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/* @@ end of prolog @@ */
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/* Contains the default location of the message catalogs. */
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extern const char _nl_default_dirname[];
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#ifdef _LIBC
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extern const char _nl_default_dirname_internal[] attribute_hidden;
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#else
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# define INTUSE(name) name
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#endif
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/* List with bindings of specific domains. */
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extern struct binding *_nl_domain_bindings;
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/* Lock variable to protect the global data in the gettext implementation. */
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__libc_rwlock_define (extern, _nl_state_lock attribute_hidden)
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/* Names for the libintl functions are a problem. They must not clash
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with existing names and they should follow ANSI C. But this source
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code is also used in GNU C Library where the names have a __
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prefix. So we have to make a difference here. */
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#ifdef _LIBC
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# define BINDTEXTDOMAIN __bindtextdomain
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# define BIND_TEXTDOMAIN_CODESET __bind_textdomain_codeset
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# ifndef strdup
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# define strdup(str) __strdup (str)
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# endif
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#else
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# define BINDTEXTDOMAIN libintl_bindtextdomain
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# define BIND_TEXTDOMAIN_CODESET libintl_bind_textdomain_codeset
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#endif
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/* Prototypes for local functions. */
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static void set_binding_values PARAMS ((const char *domainname,
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const char **dirnamep,
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const char **codesetp));
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/* Specifies the directory name *DIRNAMEP and the output codeset *CODESETP
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to be used for the DOMAINNAME message catalog.
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If *DIRNAMEP or *CODESETP is NULL, the corresponding attribute is not
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modified, only the current value is returned.
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If DIRNAMEP or CODESETP is NULL, the corresponding attribute is neither
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modified nor returned. */
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static void
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set_binding_values (domainname, dirnamep, codesetp)
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const char *domainname;
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const char **dirnamep;
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const char **codesetp;
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{
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struct binding *binding;
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int modified;
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/* Some sanity checks. */
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if (domainname == NULL || domainname[0] == '\0')
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{
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if (dirnamep)
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*dirnamep = NULL;
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if (codesetp)
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*codesetp = NULL;
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return;
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}
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__libc_rwlock_wrlock (_nl_state_lock);
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modified = 0;
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for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)
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{
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int compare = strcmp (domainname, binding->domainname);
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if (compare == 0)
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/* We found it! */
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break;
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if (compare < 0)
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{
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/* It is not in the list. */
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binding = NULL;
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break;
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}
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}
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if (binding != NULL)
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{
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if (dirnamep)
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{
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const char *dirname = *dirnamep;
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if (dirname == NULL)
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/* The current binding has be to returned. */
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*dirnamep = binding->dirname;
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else
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{
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/* The domain is already bound. If the new value and the old
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one are equal we simply do nothing. Otherwise replace the
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old binding. */
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char *result = binding->dirname;
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if (strcmp (dirname, result) != 0)
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{
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if (strcmp (dirname, INTUSE(_nl_default_dirname)) == 0)
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result = (char *) INTUSE(_nl_default_dirname);
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else
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{
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#if defined _LIBC || defined HAVE_STRDUP
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result = strdup (dirname);
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#else
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size_t len = strlen (dirname) + 1;
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result = (char *) malloc (len);
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if (__builtin_expect (result != NULL, 1))
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memcpy (result, dirname, len);
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#endif
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}
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if (__builtin_expect (result != NULL, 1))
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{
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if (binding->dirname != INTUSE(_nl_default_dirname))
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free (binding->dirname);
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binding->dirname = result;
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modified = 1;
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}
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}
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*dirnamep = result;
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}
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}
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if (codesetp)
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{
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const char *codeset = *codesetp;
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if (codeset == NULL)
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/* The current binding has be to returned. */
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*codesetp = binding->codeset;
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else
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{
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/* The domain is already bound. If the new value and the old
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one are equal we simply do nothing. Otherwise replace the
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old binding. */
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char *result = binding->codeset;
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if (result == NULL || strcmp (codeset, result) != 0)
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{
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#if defined _LIBC || defined HAVE_STRDUP
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result = strdup (codeset);
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#else
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size_t len = strlen (codeset) + 1;
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result = (char *) malloc (len);
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if (__builtin_expect (result != NULL, 1))
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memcpy (result, codeset, len);
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#endif
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if (__builtin_expect (result != NULL, 1))
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{
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if (binding->codeset != NULL)
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free (binding->codeset);
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binding->codeset = result;
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binding->codeset_cntr++;
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modified = 1;
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}
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}
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*codesetp = result;
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}
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}
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}
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else if ((dirnamep == NULL || *dirnamep == NULL)
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&& (codesetp == NULL || *codesetp == NULL))
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{
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/* Simply return the default values. */
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if (dirnamep)
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*dirnamep = INTUSE(_nl_default_dirname);
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if (codesetp)
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*codesetp = NULL;
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}
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else
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{
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/* We have to create a new binding. */
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size_t len = strlen (domainname) + 1;
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struct binding *new_binding =
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(struct binding *) malloc (offsetof (struct binding, domainname) + len);
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if (__builtin_expect (new_binding == NULL, 0))
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goto failed;
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memcpy (new_binding->domainname, domainname, len);
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240 |
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if (dirnamep)
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{
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const char *dirname = *dirnamep;
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244 |
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if (dirname == NULL)
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/* The default value. */
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dirname = INTUSE(_nl_default_dirname);
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else
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{
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249 |
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if (strcmp (dirname, INTUSE(_nl_default_dirname)) == 0)
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dirname = INTUSE(_nl_default_dirname);
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else
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252 |
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{
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253 |
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char *result;
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254 |
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#if defined _LIBC || defined HAVE_STRDUP
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255 |
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result = strdup (dirname);
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256 |
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if (__builtin_expect (result == NULL, 0))
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257 |
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goto failed_dirname;
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258 |
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#else
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259 |
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size_t len = strlen (dirname) + 1;
|
260 |
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result = (char *) malloc (len);
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261 |
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if (__builtin_expect (result == NULL, 0))
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262 |
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goto failed_dirname;
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263 |
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memcpy (result, dirname, len);
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264 |
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#endif
|
265 |
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dirname = result;
|
266 |
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}
|
267 |
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}
|
268 |
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*dirnamep = dirname;
|
269 |
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new_binding->dirname = (char *) dirname;
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270 |
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}
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271 |
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else
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272 |
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/* The default value. */
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273 |
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new_binding->dirname = (char *) INTUSE(_nl_default_dirname);
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274 |
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|
275 |
|
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new_binding->codeset_cntr = 0;
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276 |
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|
277 |
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if (codesetp)
|
278 |
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{
|
279 |
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const char *codeset = *codesetp;
|
280 |
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|
281 |
|
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if (codeset != NULL)
|
282 |
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{
|
283 |
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char *result;
|
284 |
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|
285 |
|
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#if defined _LIBC || defined HAVE_STRDUP
|
286 |
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result = strdup (codeset);
|
287 |
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if (__builtin_expect (result == NULL, 0))
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288 |
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goto failed_codeset;
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289 |
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#else
|
290 |
|
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size_t len = strlen (codeset) + 1;
|
291 |
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result = (char *) malloc (len);
|
292 |
|
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if (__builtin_expect (result == NULL, 0))
|
293 |
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goto failed_codeset;
|
294 |
|
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memcpy (result, codeset, len);
|
295 |
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#endif
|
296 |
|
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codeset = result;
|
297 |
|
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new_binding->codeset_cntr++;
|
298 |
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}
|
299 |
|
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*codesetp = codeset;
|
300 |
|
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new_binding->codeset = (char *) codeset;
|
301 |
|
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}
|
302 |
|
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else
|
303 |
|
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new_binding->codeset = NULL;
|
304 |
|
|
|
305 |
|
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/* Now enqueue it. */
|
306 |
|
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if (_nl_domain_bindings == NULL
|
307 |
|
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|| strcmp (domainname, _nl_domain_bindings->domainname) < 0)
|
308 |
|
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{
|
309 |
|
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new_binding->next = _nl_domain_bindings;
|
310 |
|
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_nl_domain_bindings = new_binding;
|
311 |
|
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}
|
312 |
|
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else
|
313 |
|
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{
|
314 |
|
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binding = _nl_domain_bindings;
|
315 |
|
|
while (binding->next != NULL
|
316 |
|
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&& strcmp (domainname, binding->next->domainname) > 0)
|
317 |
|
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binding = binding->next;
|
318 |
|
|
|
319 |
|
|
new_binding->next = binding->next;
|
320 |
|
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binding->next = new_binding;
|
321 |
|
|
}
|
322 |
|
|
|
323 |
|
|
modified = 1;
|
324 |
|
|
|
325 |
|
|
/* Here we deal with memory allocation failures. */
|
326 |
|
|
if (0)
|
327 |
|
|
{
|
328 |
|
|
failed_codeset:
|
329 |
|
|
if (new_binding->dirname != INTUSE(_nl_default_dirname))
|
330 |
|
|
free (new_binding->dirname);
|
331 |
|
|
failed_dirname:
|
332 |
|
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free (new_binding);
|
333 |
|
|
failed:
|
334 |
|
|
if (dirnamep)
|
335 |
|
|
*dirnamep = NULL;
|
336 |
|
|
if (codesetp)
|
337 |
|
|
*codesetp = NULL;
|
338 |
|
|
}
|
339 |
|
|
}
|
340 |
|
|
|
341 |
|
|
/* If we modified any binding, we flush the caches. */
|
342 |
|
|
if (modified)
|
343 |
|
|
++_nl_msg_cat_cntr;
|
344 |
|
|
|
345 |
|
|
__libc_rwlock_unlock (_nl_state_lock);
|
346 |
|
|
}
|
347 |
|
|
|
348 |
|
|
/* Specify that the DOMAINNAME message catalog will be found
|
349 |
|
|
in DIRNAME rather than in the system locale data base. */
|
350 |
|
|
char *
|
351 |
|
|
BINDTEXTDOMAIN (domainname, dirname)
|
352 |
|
|
const char *domainname;
|
353 |
|
|
const char *dirname;
|
354 |
|
|
{
|
355 |
|
|
set_binding_values (domainname, &dirname, NULL);
|
356 |
|
|
return (char *) dirname;
|
357 |
|
|
}
|
358 |
|
|
|
359 |
|
|
/* Specify the character encoding in which the messages from the
|
360 |
|
|
DOMAINNAME message catalog will be returned. */
|
361 |
|
|
char *
|
362 |
|
|
BIND_TEXTDOMAIN_CODESET (domainname, codeset)
|
363 |
|
|
const char *domainname;
|
364 |
|
|
const char *codeset;
|
365 |
|
|
{
|
366 |
|
|
set_binding_values (domainname, NULL, &codeset);
|
367 |
|
|
return (char *) codeset;
|
368 |
|
|
}
|
369 |
|
|
|
370 |
|
|
#ifdef _LIBC
|
371 |
|
|
/* Aliases for function names in GNU C Library. */
|
372 |
|
|
weak_alias (__bindtextdomain, bindtextdomain);
|
373 |
|
|
weak_alias (__bind_textdomain_codeset, bind_textdomain_codeset);
|
374 |
|
|
#endif
|