intl/explodename.c

   1 /* Copyright (C) 1995-1998, 2000, 2001 Free Software Foundation, Inc.
   2    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22
  23 #if defined STDC_HEADERS || defined _LIBC
  24 # include <stdlib.h>
  25 #endif
  26
  27 #if defined HAVE_STRING_H || defined _LIBC
  28 # include <string.h>
  29 #else
  30 # include <strings.h>
  31 #endif
  32 #include <sys/types.h>
  33
  34 #include "loadinfo.h"
  35
  36 /* On some strange systems still no definition of NULL is found.  Sigh!  */
  37 #ifndef NULL
  38 # if defined __STDC__ && __STDC__
  39 #  define NULL ((void *) 0)
  40 # else
  41 #  define NULL 0
  42 # endif
  43 #endif
  44
  45 /* @@ end of prolog @@ */
  46
  47 char *
  48 _nl_find_language (name)
  49      const char *name;
  50 {
  51   while (name[0] != '\0' && name[0] != '_' && name[0] != '@'
  52          && name[0] != '+' && name[0] != ',')
  53     ++name;
  54
  55   return (char *) name;
  56 }
  57
  58
  59 int
  60 _nl_explode_name (name, language, modifier, territory, codeset,
  61                   normalized_codeset, special, sponsor, revision)
  62      char *name;
  63      const char **language;
  64      const char **modifier;
  65      const char **territory;
  66      const char **codeset;
  67      const char **normalized_codeset;
  68      const char **special;
  69      const char **sponsor;
  70      const char **revision;
  71 {
  72   enum { undecided, xpg, cen } syntax;
  73   char *cp;
  74   int mask;
  75
  76   *modifier = NULL;
  77   *territory = NULL;
  78   *codeset = NULL;
  79   *normalized_codeset = NULL;
  80   *special = NULL;
  81   *sponsor = NULL;
  82   *revision = NULL;
  83
  84   /* Now we determine the single parts of the locale name.  First
  85      look for the language.  Termination symbols are `_' and `@' if
  86      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  87   mask = 0;
  88   syntax = undecided;
  89   *language = cp = name;
  90   cp = _nl_find_language (*language);
  91
  92   if (*language == cp)
  93     /* This does not make sense: language has to be specified.  Use
  94        this entry as it is without exploding.  Perhaps it is an alias.  */
  95     cp = strchr (*language, '\0');
  96   else if (cp[0] == '_')
  97     {
  98       /* Next is the territory.  */
  99       cp[0] = '\0';
 100       *territory = ++cp;
 101
 102       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
 103              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
 104         ++cp;
 105
 106       mask |= TERRITORY;
 107
 108       if (cp[0] == '.')
 109         {
 110           /* Next is the codeset.  */
 111           syntax = xpg;
 112           cp[0] = '\0';
 113           *codeset = ++cp;
 114
 115           while (cp[0] != '\0' && cp[0] != '@')
 116             ++cp;
 117
 118           mask |= XPG_CODESET;
 119
 120           if (*codeset != cp && (*codeset)[0] != '\0')
 121             {
 122               *normalized_codeset = _nl_normalize_codeset (*codeset,
 123                                                            cp - *codeset);
 124               if (strcmp (*codeset, *normalized_codeset) == 0)
 125                 free ((char *) *normalized_codeset);
 126               else
 127                 mask |= XPG_NORM_CODESET;
 128             }
 129         }
 130     }
 131
 132   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 133     {
 134       /* Next is the modifier.  */
 135       syntax = cp[0] == '@' ? xpg : cen;
 136       cp[0] = '\0';
 137       *modifier = ++cp;
 138
 139       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 140              && cp[0] != ',' && cp[0] != '_')
 141         ++cp;
 142
 143       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 144     }
 145
 146   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 147     {
 148       syntax = cen;
 149
 150       if (cp[0] == '+')
 151         {
 152           /* Next is special application (CEN syntax).  */
 153           cp[0] = '\0';
 154           *special = ++cp;
 155
 156           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 157             ++cp;
 158
 159           mask |= CEN_SPECIAL;
 160         }
 161
 162       if (cp[0] == ',')
 163         {
 164           /* Next is sponsor (CEN syntax).  */
 165           cp[0] = '\0';
 166           *sponsor = ++cp;
 167
 168           while (cp[0] != '\0' && cp[0] != '_')
 169             ++cp;
 170
 171           mask |= CEN_SPONSOR;
 172         }
 173
 174       if (cp[0] == '_')
 175         {
 176           /* Next is revision (CEN syntax).  */
 177           cp[0] = '\0';
 178           *revision = ++cp;
 179
 180           mask |= CEN_REVISION;
 181         }
 182     }
 183
 184   /* For CEN syntax values it might be important to have the
 185      separator character in the file name, not for XPG syntax.  */
 186   if (syntax == xpg)
 187     {
 188       if (*territory != NULL && (*territory)[0] == '\0')
 189         mask &= ~TERRITORY;
 190
 191       if (*codeset != NULL && (*codeset)[0] == '\0')
 192         mask &= ~XPG_CODESET;
 193
 194       if (*modifier != NULL && (*modifier)[0] == '\0')
 195         mask &= ~XPG_MODIFIER;
 196     }
 197
 198   return mask;
 199 }