gnu/dist/texinfo/intl/explodename.c

   1 /*      $NetBSD$        */
   2
   3 /* Copyright (C) 1995-1998, 2000-2001, 2003 Free Software Foundation, Inc.
   4    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
   5
   6    This program is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU Library General Public License as published
   8    by the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19    USA.  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 # include <config.h>
  23 #endif
  24
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include <sys/types.h>
  28
  29 #include "loadinfo.h"
  30
  31 /* On some strange systems still no definition of NULL is found.  Sigh!  */
  32 #ifndef NULL
  33 # if defined __STDC__ && __STDC__
  34 #  define NULL ((void *) 0)
  35 # else
  36 #  define NULL 0
  37 # endif
  38 #endif
  39
  40 /* @@ end of prolog @@ */
  41
  42 char *
  43 _nl_find_language (const char *name)
  44 {
  45   while (name[0] != '\0' && name[0] != '_' && name[0] != '@'
  46          && name[0] != '+' && name[0] != ',')
  47     ++name;
  48
  49   return (char *) name;
  50 }
  51
  52
  53 int
  54 _nl_explode_name (char *name,
  55                   const char **language, const char **modifier,
  56                   const char **territory, const char **codeset,
  57                   const char **normalized_codeset, const char **special,
  58                   const char **sponsor, const char **revision)
  59 {
  60   enum { undecided, xpg, cen } syntax;
  61   char *cp;
  62   int mask;
  63
  64   *modifier = NULL;
  65   *territory = NULL;
  66   *codeset = NULL;
  67   *normalized_codeset = NULL;
  68   *special = NULL;
  69   *sponsor = NULL;
  70   *revision = NULL;
  71
  72   /* Now we determine the single parts of the locale name.  First
  73      look for the language.  Termination symbols are `_' and `@' if
  74      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  75   mask = 0;
  76   syntax = undecided;
  77   *language = cp = name;
  78   cp = _nl_find_language (*language);
  79
  80   if (*language == cp)
  81     /* This does not make sense: language has to be specified.  Use
  82        this entry as it is without exploding.  Perhaps it is an alias.  */
  83     cp = strchr (*language, '\0');
  84   else if (cp[0] == '_')
  85     {
  86       /* Next is the territory.  */
  87       cp[0] = '\0';
  88       *territory = ++cp;
  89
  90       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
  91              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
  92         ++cp;
  93
  94       mask |= TERRITORY;
  95
  96       if (cp[0] == '.')
  97         {
  98           /* Next is the codeset.  */
  99           syntax = xpg;
 100           cp[0] = '\0';
 101           *codeset = ++cp;
 102
 103           while (cp[0] != '\0' && cp[0] != '@')
 104             ++cp;
 105
 106           mask |= XPG_CODESET;
 107
 108           if (*codeset != cp && (*codeset)[0] != '\0')
 109             {
 110               *normalized_codeset = _nl_normalize_codeset (*codeset,
 111                                                            cp - *codeset);
 112               if (strcmp (*codeset, *normalized_codeset) == 0)
 113                 free ((char *) *normalized_codeset);
 114               else
 115                 mask |= XPG_NORM_CODESET;
 116             }
 117         }
 118     }
 119
 120   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 121     {
 122       /* Next is the modifier.  */
 123       syntax = cp[0] == '@' ? xpg : cen;
 124       cp[0] = '\0';
 125       *modifier = ++cp;
 126
 127       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 128              && cp[0] != ',' && cp[0] != '_')
 129         ++cp;
 130
 131       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 132     }
 133
 134   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 135     {
 136       syntax = cen;
 137
 138       if (cp[0] == '+')
 139         {
 140           /* Next is special application (CEN syntax).  */
 141           cp[0] = '\0';
 142           *special = ++cp;
 143
 144           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 145             ++cp;
 146
 147           mask |= CEN_SPECIAL;
 148         }
 149
 150       if (cp[0] == ',')
 151         {
 152           /* Next is sponsor (CEN syntax).  */
 153           cp[0] = '\0';
 154           *sponsor = ++cp;
 155
 156           while (cp[0] != '\0' && cp[0] != '_')
 157             ++cp;
 158
 159           mask |= CEN_SPONSOR;
 160         }
 161
 162       if (cp[0] == '_')
 163         {
 164           /* Next is revision (CEN syntax).  */
 165           cp[0] = '\0';
 166           *revision = ++cp;
 167
 168           mask |= CEN_REVISION;
 169         }
 170     }
 171
 172   /* For CEN syntax values it might be important to have the
 173      separator character in the file name, not for XPG syntax.  */
 174   if (syntax == xpg)
 175     {
 176       if (*territory != NULL && (*territory)[0] == '\0')
 177         mask &= ~TERRITORY;
 178
 179       if (*codeset != NULL && (*codeset)[0] == '\0')
 180         mask &= ~XPG_CODESET;
 181
 182       if (*modifier != NULL && (*modifier)[0] == '\0')
 183         mask &= ~XPG_MODIFIER;
 184     }
 185
 186   return mask;
 187 }