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/* Handle list of needed message catalogs
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   Copyright (C) 1995-1999, 2000-2001, 2003 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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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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 <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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/* @@ 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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internal_function
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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 *special;
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  const char *sponsor;
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  const char *revision;
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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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     and six parts for the CEN syntax:
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        language[_territory][+audience][+special][,[sponsor][_revision]]
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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) revision
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                (2) sponsor
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                (3) special
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                (4) codeset
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                (5) normalized codeset
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                (6) territory
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                (7) audience/modifier
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   */
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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, NULL, NULL, NULL, domainname, 0);
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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 cnt >= 0 ? retval : NULL;
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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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#if defined _LIBC || defined HAVE_STRDUP
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      locale = strdup (alias_value);
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      if (locale == NULL)
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        return NULL;
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#else
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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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#endif
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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 `@' if
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     we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
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  mask = _nl_explode_name (locale, &language, &modifier, &territory,
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                           &codeset, &normalized_codeset, &special,
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                           &sponsor, &revision);
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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, special,
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                               sponsor, revision, domainname, 1);
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  if (retval == NULL)
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    /* This means we are out of core.  */
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    return NULL;
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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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  /* 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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libc_freeres_fn (free_mem)
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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