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glibc/intl/finddomain.c
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/* Handle list of needed message catalogs | |
Copyright (C) 1995-2013 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Written by Ulrich Drepper <drepper@gnu.org>, 1995. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 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 | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#ifdef HAVE_CONFIG_H | |
# include <config.h> | |
#endif | |
#include <stdio.h> | |
#include <sys/types.h> | |
#include <stdlib.h> | |
#include <string.h> | |
#if defined HAVE_UNISTD_H || defined _LIBC | |
# include <unistd.h> | |
#endif | |
#include "gettextP.h" | |
#ifdef _LIBC | |
# include <libintl.h> | |
# include <bits/libc-lock.h> | |
#else | |
# include "libgnuintl.h" | |
#endif | |
/* @@ end of prolog @@ */ | |
/* List of already loaded domains. */ | |
static struct loaded_l10nfile *_nl_loaded_domains; | |
/* Return a data structure describing the message catalog described by | |
the DOMAINNAME and CATEGORY parameters with respect to the currently | |
established bindings. */ | |
struct loaded_l10nfile * | |
internal_function | |
_nl_find_domain (dirname, locale, domainname, domainbinding) | |
const char *dirname; | |
char *locale; | |
const char *domainname; | |
struct binding *domainbinding; | |
{ | |
struct loaded_l10nfile *retval; | |
const char *language; | |
const char *modifier; | |
const char *territory; | |
const char *codeset; | |
const char *normalized_codeset; | |
const char *alias_value; | |
int mask; | |
/* LOCALE can consist of up to four recognized parts for the XPG syntax: | |
language[_territory[.codeset]][@modifier] | |
Beside the first part all of them are allowed to be missing. If | |
the full specified locale is not found, the less specific one are | |
looked for. The various parts will be stripped off according to | |
the following order: | |
(1) codeset | |
(2) normalized codeset | |
(3) territory | |
(4) modifier | |
*/ | |
/* We need to protect modifying the _NL_LOADED_DOMAINS data. */ | |
__libc_rwlock_define_initialized (static, lock); | |
__libc_rwlock_rdlock (lock); | |
/* If we have already tested for this locale entry there has to | |
be one data set in the list of loaded domains. */ | |
retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname, | |
strlen (dirname) + 1, 0, locale, NULL, NULL, | |
NULL, NULL, domainname, 0); | |
__libc_rwlock_unlock (lock); | |
if (retval != NULL) | |
{ | |
/* We know something about this locale. */ | |
int cnt; | |
if (retval->decided <= 0) | |
_nl_load_domain (retval, domainbinding); | |
if (retval->data != NULL) | |
return retval; | |
for (cnt = 0; retval->successor[cnt] != NULL; ++cnt) | |
{ | |
if (retval->successor[cnt]->decided <= 0) | |
_nl_load_domain (retval->successor[cnt], domainbinding); | |
if (retval->successor[cnt]->data != NULL) | |
break; | |
} | |
return retval; | |
/* NOTREACHED */ | |
} | |
/* See whether the locale value is an alias. If yes its value | |
*overwrites* the alias name. No test for the original value is | |
done. */ | |
alias_value = _nl_expand_alias (locale); | |
if (alias_value != NULL) | |
locale = strdupa (alias_value); | |
/* Now we determine the single parts of the locale name. First | |
look for the language. Termination symbols are `_' and `@' if | |
we use XPG4 style, and `_', `+', and `,' if we use CEN syntax. */ | |
mask = _nl_explode_name (locale, &language, &modifier, &territory, | |
&codeset, &normalized_codeset); | |
if (mask == -1) | |
/* This means we are out of core. */ | |
return NULL; | |
/* We need to protect modifying the _NL_LOADED_DOMAINS data. */ | |
__libc_rwlock_wrlock (lock); | |
/* Create all possible locale entries which might be interested in | |
generalization. */ | |
retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname, | |
strlen (dirname) + 1, mask, language, territory, | |
codeset, normalized_codeset, modifier, | |
domainname, 1); | |
__libc_rwlock_unlock (lock); | |
if (retval == NULL) | |
/* This means we are out of core. */ | |
goto out; | |
if (retval->decided <= 0) | |
_nl_load_domain (retval, domainbinding); | |
if (retval->data == NULL) | |
{ | |
int cnt; | |
for (cnt = 0; retval->successor[cnt] != NULL; ++cnt) | |
{ | |
if (retval->successor[cnt]->decided <= 0) | |
_nl_load_domain (retval->successor[cnt], domainbinding); | |
if (retval->successor[cnt]->data != NULL) | |
break; | |
} | |
} | |
out: | |
/* The space for normalized_codeset is dynamically allocated. Free it. */ | |
if (mask & XPG_NORM_CODESET) | |
free ((void *) normalized_codeset); | |
return retval; | |
} | |
#ifdef _LIBC | |
/* This is called from iconv/gconv_db.c's free_mem, as locales must | |
be freed before freeing gconv steps arrays. */ | |
void __libc_freeres_fn_section | |
_nl_finddomain_subfreeres (void) | |
{ | |
struct loaded_l10nfile *runp = _nl_loaded_domains; | |
while (runp != NULL) | |
{ | |
struct loaded_l10nfile *here = runp; | |
if (runp->data != NULL) | |
_nl_unload_domain ((struct loaded_domain *) runp->data); | |
runp = runp->next; | |
free ((char *) here->filename); | |
free (here); | |
} | |
} | |
#endif |