1 rizwank 1.1 /* Handle list of needed message catalogs
  2                Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
  3                Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
  4             
  5                This program is free software; you can redistribute it and/or modify
  6                it under the terms of the GNU General Public License as published by
  7                the Free Software Foundation; either version 2, or (at your option)
  8                any later version.
  9             
 10                This program is distributed in the hope that it will be useful,
 11                but WITHOUT ANY WARRANTY; without even the implied warranty of
 12                MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 13                GNU General Public License for more details.
 14             
 15                You should have received a copy of the GNU General Public License
 16                along with this program; if not, write to the Free Software Foundation,
 17                Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 18             
 19             #ifdef HAVE_CONFIG_H
 20             # include <config.h>
 21             #endif
 22 rizwank 1.1 
 23             #include <ctype.h>
 24             #include <errno.h>
 25             #include <stdio.h>
 26             #include <sys/types.h>
 27             
 28             #if defined STDC_HEADERS || defined _LIBC
 29             # include <stdlib.h>
 30             #else
 31             # ifdef HAVE_MALLOC_H
 32             #  include <malloc.h>
 33             # else
 34             void free ();
 35             # endif
 36             #endif
 37             
 38             #if defined HAVE_STRING_H || defined _LIBC
 39             # include <string.h>
 40             #else
 41             # include <strings.h>
 42             # ifndef memcpy
 43 rizwank 1.1 #  define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num)
 44             # endif
 45             #endif
 46             #if !HAVE_STRCHR && !defined _LIBC
 47             # ifndef strchr
 48             #  define strchr index
 49             # endif
 50             #endif
 51             
 52             #if defined HAVE_UNISTD_H || defined _LIBC
 53             # include <unistd.h>
 54             #endif
 55             
 56             #include "gettext.h"
 57             #include "gettextP.h"
 58             #ifdef _LIBC
 59             # include <libintl.h>
 60             #else
 61             # include "libgettext.h"
 62             #endif
 63             
 64 rizwank 1.1 /* @@ end of prolog @@ */
 65             /* List of already loaded domains.  */
 66             static struct loaded_l10nfile *_nl_loaded_domains;
 67             
 68             
 69             /* Return a data structure describing the message catalog described by
 70                the DOMAINNAME and CATEGORY parameters with respect to the currently
 71                established bindings.  */
 72             struct loaded_l10nfile *
 73             internal_function
 74             _nl_find_domain (dirname, locale, domainname)
 75                  const char *dirname;
 76                  char *locale;
 77                  const char *domainname;
 78             {
 79               struct loaded_l10nfile *retval;
 80               const char *language;
 81               const char *modifier;
 82               const char *territory;
 83               const char *codeset;
 84               const char *normalized_codeset;
 85 rizwank 1.1   const char *special;
 86               const char *sponsor;
 87               const char *revision;
 88               const char *alias_value;
 89               int mask;
 90             
 91               /* LOCALE can consist of up to four recognized parts for the XPG syntax:
 92             
 93             		language[_territory[.codeset]][@modifier]
 94             
 95                  and six parts for the CEN syntax:
 96             
 97             	language[_territory][+audience][+special][,[sponsor][_revision]]
 98             
 99                  Beside the first part all of them are allowed to be missing.  If
100                  the full specified locale is not found, the less specific one are
101                  looked for.  The various parts will be stripped off according to
102                  the following order:
103             		(1) revision
104             		(2) sponsor
105             		(3) special
106 rizwank 1.1 		(4) codeset
107             		(5) normalized codeset
108             		(6) territory
109             		(7) audience/modifier
110                */
111             
112               /* If we have already tested for this locale entry there has to
113                  be one data set in the list of loaded domains.  */
114               retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname,
115             			       strlen (dirname) + 1, 0, locale, NULL, NULL,
116             			       NULL, NULL, NULL, NULL, NULL, domainname, 0);
117               if (retval != NULL)
118                 {
119                   /* We know something about this locale.  */
120                   int cnt;
121             
122                   if (retval->decided == 0)
123             	_nl_load_domain (retval);
124             
125                   if (retval->data != NULL)
126             	return retval;
127 rizwank 1.1 
128                   for (cnt = 0; retval->successor[cnt] != NULL; ++cnt)
129             	{
130             	  if (retval->successor[cnt]->decided == 0)
131             	    _nl_load_domain (retval->successor[cnt]);
132             
133             	  if (retval->successor[cnt]->data != NULL)
134             	    break;
135             	}
136                   return cnt >= 0 ? retval : NULL;
137                   /* NOTREACHED */
138                 }
139             
140               /* See whether the locale value is an alias.  If yes its value
141                  *overwrites* the alias name.  No test for the original value is
142                  done.  */
143               alias_value = _nl_expand_alias (locale);
144               if (alias_value != NULL)
145                 {
146             #if defined _LIBC || defined HAVE_STRDUP
147                   locale = strdup (alias_value);
148 rizwank 1.1       if (locale == NULL)
149             	return NULL;
150             #else
151                   size_t len = strlen (alias_value) + 1;
152                   locale = (char *) malloc (len);
153                   if (locale == NULL)
154             	return NULL;
155             
156                   memcpy (locale, alias_value, len);
157             #endif
158                 }
159             
160               /* Now we determine the single parts of the locale name.  First
161                  look for the language.  Termination symbols are `_' and `@' if
162                  we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
163               mask = _nl_explode_name (locale, &language, &modifier, &territory,
164             			   &codeset, &normalized_codeset, &special,
165             			   &sponsor, &revision);
166             
167               /* Create all possible locale entries which might be interested in
168                  generalization.  */
169 rizwank 1.1   retval = _nl_make_l10nflist (&_nl_loaded_domains, dirname,
170             			       strlen (dirname) + 1, mask, language, territory,
171             			       codeset, normalized_codeset, modifier, special,
172             			       sponsor, revision, domainname, 1);
173               if (retval == NULL)
174                 /* This means we are out of core.  */
175                 return NULL;
176             
177               if (retval->decided == 0)
178                 _nl_load_domain (retval);
179               if (retval->data == NULL)
180                 {
181                   int cnt;
182                   for (cnt = 0; retval->successor[cnt] != NULL; ++cnt)
183             	{
184             	  if (retval->successor[cnt]->decided == 0)
185             	    _nl_load_domain (retval->successor[cnt]);
186             	  if (retval->successor[cnt]->data != NULL)
187             	    break;
188             	}
189                 }
190 rizwank 1.1 
191               /* The room for an alias was dynamically allocated.  Free it now.  */
192               if (alias_value != NULL)
193                 free (locale);
194             
195               return retval;
196             }
197             
198             
199             #ifdef _LIBC
200             static void __attribute__ ((unused))
201             free_mem (void)
202             {
203               struct loaded_l10nfile *runp = _nl_loaded_domains;
204             
205               while (runp != NULL)
206                 {
207                   struct loaded_l10nfile *here = runp;
208                   if (runp->data != NULL)
209             	_nl_unload_domain ((struct loaded_domain *) runp->data);
210                   runp = runp->next;
211 rizwank 1.1       free (here);
212                 }
213             }
214             
215             text_set_element (__libc_subfreeres, free_mem);
216             #endif