intl/explodename.c

   1 /* Copyright (C) 1995, 1996, 1997, 1998 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 #if defined STDC_HEADERS || defined _LIBC
  23 # include <stdlib.h>
  24 #endif
  25
  26 #if defined HAVE_STRING_H || defined _LIBC
  27 # include <string.h>
  28 #else
  29 # include <strings.h>
  30 #endif
  31 #include <sys/types.h>
  32
  33 #include "loadinfo.h"
  34
  35 /* On some strange systems still no definition of NULL is found.  Sigh!  */
  36 #ifndef NULL
  37 # if defined __STDC__ && __STDC__
  38 #  define NULL ((void *) 0)
  39 # else
  40 #  define NULL 0
  41 # endif
  42 #endif
  43
  44 /* @@ end of prolog @@ */
  45
  46 int
  47 _nl_explode_name (name, language, modifier, territory, codeset,
  48                   normalized_codeset, special, sponsor, revision)
  49      char *name;
  50      const char **language;
  51      const char **modifier;
  52      const char **territory;
  53      const char **codeset;
  54      const char **normalized_codeset;
  55      const char **special;
  56      const char **sponsor;
  57      const char **revision;
  58 {
  59   enum { undecided, xpg, cen } syntax;
  60   char *cp;
  61   int mask;
  62
  63   *modifier = NULL;
  64   *territory = NULL;
  65   *codeset = NULL;
  66   *normalized_codeset = NULL;
  67   *special = NULL;
  68   *sponsor = NULL;
  69   *revision = NULL;
  70
  71   /* Now we determine the single parts of the locale name.  First
  72      look for the language.  Termination symbols are `_' and `@' if
  73      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  74   mask = 0;
  75   syntax = undecided;
  76   *language = cp = name;
  77   while (cp[0] != '\0' && cp[0] != '_' && cp[0] != '@'
  78          && cp[0] != '+' && cp[0] != ',')
  79     ++cp;
  80
  81   if (*language == cp)
  82     /* This does not make sense: language has to be specified.  Use
  83        this entry as it is without exploding.  Perhaps it is an alias.  */
  84     cp = strchr (*language, '\0');
  85   else if (cp[0] == '_')
  86     {
  87       /* Next is the territory.  */
  88       cp[0] = '\0';
  89       *territory = ++cp;
  90
  91       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
  92              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
  93         ++cp;
  94
  95       mask |= TERRITORY;
  96
  97       if (cp[0] == '.')
  98         {
  99           /* Next is the codeset.  */
 100           syntax = xpg;
 101           cp[0] = '\0';
 102           *codeset = ++cp;
 103
 104           while (cp[0] != '\0' && cp[0] != '@')
 105             ++cp;
 106
 107           mask |= XPG_CODESET;
 108
 109           if (*codeset != cp && (*codeset)[0] != '\0')
 110             {
 111               *normalized_codeset = _nl_normalize_codeset (*codeset,
 112                                                            cp - *codeset);
 113               if (strcmp (*codeset, *normalized_codeset) == 0)
 114                 free ((char *) *normalized_codeset);
 115               else
 116                 mask |= XPG_NORM_CODESET;
 117             }
 118         }
 119     }
 120
 121   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 122     {
 123       /* Next is the modifier.  */
 124       syntax = cp[0] == '@' ? xpg : cen;
 125       cp[0] = '\0';
 126       *modifier = ++cp;
 127
 128       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 129              && cp[0] != ',' && cp[0] != '_')
 130         ++cp;
 131
 132       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 133     }
 134
 135   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 136     {
 137       syntax = cen;
 138
 139       if (cp[0] == '+')
 140         {
 141           /* Next is special application (CEN syntax).  */
 142           cp[0] = '\0';
 143           *special = ++cp;
 144
 145           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 146             ++cp;
 147
 148           mask |= CEN_SPECIAL;
 149         }
 150
 151       if (cp[0] == ',')
 152         {
 153           /* Next is sponsor (CEN syntax).  */
 154           cp[0] = '\0';
 155           *sponsor = ++cp;
 156
 157           while (cp[0] != '\0' && cp[0] != '_')
 158             ++cp;
 159
 160           mask |= CEN_SPONSOR;
 161         }
 162
 163       if (cp[0] == '_')
 164         {
 165           /* Next is revision (CEN syntax).  */
 166           cp[0] = '\0';
 167           *revision = ++cp;
 168
 169           mask |= CEN_REVISION;
 170         }
 171     }
 172
 173   /* For CEN syntax values it might be important to have the
 174      separator character in the file name, not for XPG syntax.  */
 175   if (syntax == xpg)
 176     {
 177       if (*territory != NULL && (*territory)[0] == '\0')
 178         mask &= ~TERRITORY;
 179
 180       if (*codeset != NULL && (*codeset)[0] == '\0')
 181         mask &= ~XPG_CODESET;
 182
 183       if (*modifier != NULL && (*modifier)[0] == '\0')
 184         mask &= ~XPG_MODIFIER;
 185     }
 186
 187   return mask;
 188 }