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Diffstat (limited to 'intl/finddomain.c')
| -rw-r--r-- | intl/finddomain.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/intl/finddomain.c b/intl/finddomain.c new file mode 100644 index 00000000..cab2c999 --- /dev/null +++ b/intl/finddomain.c @@ -0,0 +1,212 @@ +/* Handle list of needed message catalogs + Copyright (C) 1995-1999, 2000-2001, 2003-2007 Free Software Foundation, Inc. + Written by Ulrich Drepper <drepper@gnu.org>, 1995. + + This program 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, 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#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> +#else +# include "libgnuintl.h" +#endif + +/* Handle multi-threaded applications. */ +#ifdef _LIBC +# include <bits/libc-lock.h> +# define gl_rwlock_define_initialized __libc_rwlock_define_initialized +# define gl_rwlock_rdlock __libc_rwlock_rdlock +# define gl_rwlock_wrlock __libc_rwlock_wrlock +# define gl_rwlock_unlock __libc_rwlock_unlock +#else +# include "lock.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 (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. */ + gl_rwlock_define_initialized (static, lock); + gl_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); + + gl_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) + { +#if defined _LIBC || defined HAVE_STRDUP + locale = strdup (alias_value); + if (locale == NULL) + return NULL; +#else + size_t len = strlen (alias_value) + 1; + locale = (char *) malloc (len); + if (locale == NULL) + return NULL; + + memcpy (locale, alias_value, len); +#endif + } + + /* Now we determine the single parts of the locale name. First + look for the language. Termination symbols are `_', '.', and `@'. */ + 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. */ + gl_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); + + gl_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; + } + } + + /* The room for an alias was dynamically allocated. Free it now. */ + if (alias_value != NULL) + free (locale); + +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 () +{ + 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 |