texinfo/intl/explodename.c

   1 /* Copyright (C) 1995, 1996, 1997 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 #include <string.h>
  26 #include <sys/types.h>
  27
  28 #include "loadinfo.h"
  29
  30 /* On some strange systems still no definition of NULL is found.  Sigh!  */
  31 #ifndef NULL
  32 # if defined __STDC__ && __STDC__
  33 #  define NULL ((void *) 0)
  34 # else
  35 #  define NULL 0
  36 # endif
  37 #endif
  38
  39 /* @@ end of prolog @@ */
  40
  41 int
  42 _nl_explode_name (name, language, modifier, territory, codeset,
  43                   normalized_codeset, special, sponsor, revision)
  44      char *name;
  45      const char **language;
  46      const char **modifier;
  47      const char **territory;
  48      const char **codeset;
  49      const char **normalized_codeset;
  50      const char **special;
  51      const char **sponsor;
  52      const char **revision;
  53 {
  54   enum { undecided, xpg, cen } syntax;
  55   char *cp;
  56   int mask;
  57
  58   *modifier = NULL;
  59   *territory = NULL;
  60   *codeset = NULL;
  61   *normalized_codeset = NULL;
  62   *special = NULL;
  63   *sponsor = NULL;
  64   *revision = NULL;
  65
  66   /* Now we determine the single parts of the locale name.  First
  67      look for the language.  Termination symbols are `_' and `@' if
  68      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  69   mask = 0;
  70   syntax = undecided;
  71   *language = cp = name;
  72   while (cp[0] != '\0' && cp[0] != '_' && cp[0] != '@'
  73          && cp[0] != '+' && cp[0] != ',')
  74     ++cp;
  75
  76   if (*language == cp)
  77     /* This does not make sense: language has to be specified.  Use
  78        this entry as it is without exploding.  Perhaps it is an alias.  */
  79     cp = strchr (*language, '\0');
  80   else if (cp[0] == '_')
  81     {
  82       /* Next is the territory.  */
  83       cp[0] = '\0';
  84       *territory = ++cp;
  85
  86       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
  87              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
  88         ++cp;
  89
  90       mask |= TERRITORY;
  91
  92       if (cp[0] == '.')
  93         {
  94           /* Next is the codeset.  */
  95           syntax = xpg;
  96           cp[0] = '\0';
  97           *codeset = ++cp;
  98
  99           while (cp[0] != '\0' && cp[0] != '@')
 100             ++cp;
 101
 102           mask |= XPG_CODESET;
 103
 104           if (*codeset != cp && (*codeset)[0] != '\0')
 105             {
 106               *normalized_codeset = _nl_normalize_codeset (*codeset,
 107                                                            cp - *codeset);
 108               if (strcmp (*codeset, *normalized_codeset) == 0)
 109                 free ((char *) *normalized_codeset);
 110               else
 111                 mask |= XPG_NORM_CODESET;
 112             }
 113         }
 114     }
 115
 116   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 117     {
 118       /* Next is the modifier.  */
 119       syntax = cp[0] == '@' ? xpg : cen;
 120       cp[0] = '\0';
 121       *modifier = ++cp;
 122
 123       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 124              && cp[0] != ',' && cp[0] != '_')
 125         ++cp;
 126
 127       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 128     }
 129
 130   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 131     {
 132       syntax = cen;
 133
 134       if (cp[0] == '+')
 135         {
 136           /* Next is special application (CEN syntax).  */
 137           cp[0] = '\0';
 138           *special = ++cp;
 139
 140           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 141             ++cp;
 142
 143           mask |= CEN_SPECIAL;
 144         }
 145
 146       if (cp[0] == ',')
 147         {
 148           /* Next is sponsor (CEN syntax).  */
 149           cp[0] = '\0';
 150           *sponsor = ++cp;
 151
 152           while (cp[0] != '\0' && cp[0] != '_')
 153             ++cp;
 154
 155           mask |= CEN_SPONSOR;
 156         }
 157
 158       if (cp[0] == '_')
 159         {
 160           /* Next is revision (CEN syntax).  */
 161           cp[0] = '\0';
 162           *revision = ++cp;
 163
 164           mask |= CEN_REVISION;
 165         }
 166     }
 167
 168   /* For CEN syntax values it might be important to have the
 169      separator character in the file name, not for XPG syntax.  */
 170   if (syntax == xpg)
 171     {
 172       if (*territory != NULL && (*territory)[0] == '\0')
 173         mask &= ~TERRITORY;
 174
 175       if (*codeset != NULL && (*codeset)[0] == '\0')
 176         mask &= ~XPG_CODESET;
 177
 178       if (*modifier != NULL && (*modifier)[0] == '\0')
 179         mask &= ~XPG_MODIFIER;
 180     }
 181
 182   return mask;
 183 }