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    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program 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
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software Foundation,
  16    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  17
  18 #ifdef HAVE_CONFIG_H
  19 # include <config.h>
  20 #endif
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <sys/types.h>
  25
  26 #include "loadinfo.h"
  27
  28 /* On some strange systems still no definition of NULL is found.  Sigh!  */
  29 #ifndef NULL
  30 # if defined __STDC__ && __STDC__
  31 #  define NULL ((void *) 0)
  32 # else
  33 #  define NULL 0
  34 # endif
  35 #endif
  36
  37 /* @@ end of prolog @@ */
  38
  39 char *
  40 _nl_find_language (name)
  41      const char *name;
  42 {
  43   while (name[0] != '\0' && name[0] != '_' && name[0] != '@'
  44          && name[0] != '+' && name[0] != ',')
  45     ++name;
  46
  47   return (char *) name;
  48 }
  49
  50
  51 int
  52 _nl_explode_name (name, language, modifier, territory, codeset,
  53                   normalized_codeset, special, sponsor, revision)
  54      char *name;
  55      const char **language;
  56      const char **modifier;
  57      const char **territory;
  58      const char **codeset;
  59      const char **normalized_codeset;
  60      const char **special;
  61      const char **sponsor;
  62      const char **revision;
  63 {
  64   enum { undecided, xpg, cen } syntax;
  65   char *cp;
  66   int mask;
  67
  68   *modifier = NULL;
  69   *territory = NULL;
  70   *codeset = NULL;
  71   *normalized_codeset = NULL;
  72   *special = NULL;
  73   *sponsor = NULL;
  74   *revision = NULL;
  75
  76   /* Now we determine the single parts of the locale name.  First
  77      look for the language.  Termination symbols are `_' and `@' if
  78      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  79   mask = 0;
  80   syntax = undecided;
  81   *language = cp = name;
  82   cp = _nl_find_language (*language);
  83
  84   if (*language == cp)
  85     /* This does not make sense: language has to be specified.  Use
  86        this entry as it is without exploding.  Perhaps it is an alias.  */
  87     cp = strchr (*language, '\0');
  88   else if (cp[0] == '_')
  89     {
  90       /* Next is the territory.  */
  91       cp[0] = '\0';
  92       *territory = ++cp;
  93
  94       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
  95              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
  96         ++cp;
  97
  98       mask |= TERRITORY;
  99
 100       if (cp[0] == '.')
 101         {
 102           /* Next is the codeset.  */
 103           syntax = xpg;
 104           cp[0] = '\0';
 105           *codeset = ++cp;
 106
 107           while (cp[0] != '\0' && cp[0] != '@')
 108             ++cp;
 109
 110           mask |= XPG_CODESET;
 111
 112           if (*codeset != cp && (*codeset)[0] != '\0')
 113             {
 114               *normalized_codeset = _nl_normalize_codeset (*codeset,
 115                                                            cp - *codeset);
 116               if (strcmp (*codeset, *normalized_codeset) == 0)
 117                 free ((char *) *normalized_codeset);
 118               else
 119                 mask |= XPG_NORM_CODESET;
 120             }
 121         }
 122     }
 123
 124   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 125     {
 126       /* Next is the modifier.  */
 127       syntax = cp[0] == '@' ? xpg : cen;
 128       cp[0] = '\0';
 129       *modifier = ++cp;
 130
 131       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 132              && cp[0] != ',' && cp[0] != '_')
 133         ++cp;
 134
 135       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 136     }
 137
 138   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 139     {
 140       syntax = cen;
 141
 142       if (cp[0] == '+')
 143         {
 144           /* Next is special application (CEN syntax).  */
 145           cp[0] = '\0';
 146           *special = ++cp;
 147
 148           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 149             ++cp;
 150
 151           mask |= CEN_SPECIAL;
 152         }
 153
 154       if (cp[0] == ',')
 155         {
 156           /* Next is sponsor (CEN syntax).  */
 157           cp[0] = '\0';
 158           *sponsor = ++cp;
 159
 160           while (cp[0] != '\0' && cp[0] != '_')
 161             ++cp;
 162
 163           mask |= CEN_SPONSOR;
 164         }
 165
 166       if (cp[0] == '_')
 167         {
 168           /* Next is revision (CEN syntax).  */
 169           cp[0] = '\0';
 170           *revision = ++cp;
 171
 172           mask |= CEN_REVISION;
 173         }
 174     }
 175
 176   /* For CEN syntax values it might be important to have the
 177      separator character in the file name, not for XPG syntax.  */
 178   if (syntax == xpg)
 179     {
 180       if (*territory != NULL && (*territory)[0] == '\0')
 181         mask &= ~TERRITORY;
 182
 183       if (*codeset != NULL && (*codeset)[0] == '\0')
 184         mask &= ~XPG_CODESET;
 185
 186       if (*modifier != NULL && (*modifier)[0] == '\0')
 187         mask &= ~XPG_MODIFIER;
 188     }
 189
 190   return mask;
 191 }