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/* Handle list of needed message catalogs
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Copyright (C) 1995-2018 Free Software Foundation, Inc.
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Written by Ulrich Drepper <drepper@gnu.org>, 1995.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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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 <stdio.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <string.h>
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#if defined HAVE_UNISTD_H || defined _LIBC
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# include <unistd.h>
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#endif
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#include "gettextP.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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/* Handle multi-threaded applications. */
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#ifdef _LIBC
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# include <libc-lock.h>
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# define gl_rwlock_define_initialized __libc_rwlock_define_initialized
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# define gl_rwlock_rdlock __libc_rwlock_rdlock
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# define gl_rwlock_wrlock __libc_rwlock_wrlock
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# define gl_rwlock_unlock __libc_rwlock_unlock
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#else
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# include "lock.h"
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#endif
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/* @@ end of prolog @@ */
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/* List of already loaded domains. */
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static struct loaded_l10nfile *_nl_loaded_domains;
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/* Return a data structure describing the message catalog described by
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the DOMAINNAME and CATEGORY parameters with respect to the currently
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established bindings. */
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struct loaded_l10nfile *
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_nl_find_domain (const char *dirname, char *locale,
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const char *domainname, struct binding *domainbinding)
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{
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struct loaded_l10nfile *retval;
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const char *language;
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const char *modifier;
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const char *territory;
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const char *codeset;
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const char *normalized_codeset;
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const char *alias_value;
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int mask;
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/* LOCALE can consist of up to four recognized parts for the XPG syntax:
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language[_territory][.codeset][@modifier]
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Beside the first part all of them are allowed to be missing. If
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the full specified locale is not found, the less specific one are
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looked for. The various parts will be stripped off according to
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the following order:
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(1) codeset
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(2) normalized codeset
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(3) territory
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(4) modifier
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*/
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/* We need to protect modifying the _NL_LOADED_DOMAINS data. */
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gl_rwlock_define_initialized (static, lock);
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gl_rwlock_rdlock (lock);
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/* If we have already tested for this locale entry there has to
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be one data set in the list of loaded domains. */
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retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname,
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strlen (dirname) + 1, 0, locale, NULL, NULL,
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NULL, NULL, domainname, 0);
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gl_rwlock_unlock (lock);
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if (retval != NULL)
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{
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/* We know something about this locale. */
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int cnt;
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if (retval->decided <= 0)
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_nl_load_domain (retval, domainbinding);
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if (retval->data != NULL)
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return retval;
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for (cnt = 0; retval->successor[cnt] != NULL; ++cnt)
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{
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if (retval->successor[cnt]->decided <= 0)
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_nl_load_domain (retval->successor[cnt], domainbinding);
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if (retval->successor[cnt]->data != NULL)
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break;
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}
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return retval;
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/* NOTREACHED */
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}
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/* See whether the locale value is an alias. If yes its value
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*overwrites* the alias name. No test for the original value is
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done. */
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alias_value = _nl_expand_alias (locale);
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if (alias_value != NULL)
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{
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size_t len = strlen (alias_value) + 1;
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locale = (char *) malloc (len);
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if (locale == NULL)
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return NULL;
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memcpy (locale, alias_value, len);
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}
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/* Now we determine the single parts of the locale name. First
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look for the language. Termination symbols are `_', '.', and `@'. */
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mask = _nl_explode_name (locale, &language, &modifier, &territory,
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&codeset, &normalized_codeset);
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if (mask == -1)
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/* This means we are out of core. */
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return NULL;
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/* We need to protect modifying the _NL_LOADED_DOMAINS data. */
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gl_rwlock_wrlock (lock);
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/* Create all possible locale entries which might be interested in
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generalization. */
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retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname,
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strlen (dirname) + 1, mask, language, territory,
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codeset, normalized_codeset, modifier,
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domainname, 1);
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gl_rwlock_unlock (lock);
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if (retval == NULL)
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/* This means we are out of core. */
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goto out;
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if (retval->decided <= 0)
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_nl_load_domain (retval, domainbinding);
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if (retval->data == NULL)
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{
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int cnt;
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for (cnt = 0; retval->successor[cnt] != NULL; ++cnt)
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{
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if (retval->successor[cnt]->decided <= 0)
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_nl_load_domain (retval->successor[cnt], domainbinding);
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if (retval->successor[cnt]->data != NULL)
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break;
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}
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}
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/* The room for an alias was dynamically allocated. Free it now. */
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if (alias_value != NULL)
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free (locale);
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out:
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/* The space for normalized_codeset is dynamically allocated. Free it. */
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if (mask & XPG_NORM_CODESET)
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free ((void *) normalized_codeset);
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return retval;
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}
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#ifdef _LIBC
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/* This is called from iconv/gconv_db.c's free_mem, as locales must
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be freed before freeing gconv steps arrays. */
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void __libc_freeres_fn_section
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_nl_finddomain_subfreeres (void)
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{
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struct loaded_l10nfile *runp = _nl_loaded_domains;
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while (runp != NULL)
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{
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struct loaded_l10nfile *here = runp;
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if (runp->data != NULL)
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_nl_unload_domain ((struct loaded_domain *) runp->data);
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runp = runp->next;
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free ((char *) here->filename);
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free (here);
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}
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}
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#endif
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