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 #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 int
  40 _nl_explode_name (name, language, modifier, territory, codeset,
  41                   normalized_codeset, special, sponsor, revision)
  42      char *name;
  43      const char **language;
  44      const char **modifier;
  45      const char **territory;
  46      const char **codeset;
  47      const char **normalized_codeset;
  48      const char **special;
  49      const char **sponsor;
  50      const char **revision;
  51 {
  52   enum { undecided, xpg, cen } syntax;
  53   char *cp;
  54   int mask;
  55
  56   *modifier = NULL;
  57   *territory = NULL;
  58   *codeset = NULL;
  59   *normalized_codeset = NULL;
  60   *special = NULL;
  61   *sponsor = NULL;
  62   *revision = NULL;
  63
  64   /* Now we determine the single parts of the locale name.  First
  65      look for the language.  Termination symbols are `_' and `@' if
  66      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  67   mask = 0;
  68   syntax = undecided;
  69   *language = cp = name;
  70   while (cp[0] != '\0' && cp[0] != '_' && cp[0] != '@'
  71          && cp[0] != '+' && cp[0] != ',')
  72     ++cp;
  73
  74   if (*language == cp)
  75     /* This does not make sense: language has to be specified.  Use
  76        this entry as it is without exploding.  Perhaps it is an alias.  */
  77     cp = strchr (*language, '\0');
  78   else if (cp[0] == '_')
  79     {
  80       /* Next is the territory.  */
  81       cp[0] = '\0';
  82       *territory = ++cp;
  83
  84       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
  85              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
  86         ++cp;
  87
  88       mask |= TERRITORY;
  89
  90       if (cp[0] == '.')
  91         {
  92           /* Next is the codeset.  */
  93           syntax = xpg;
  94           cp[0] = '\0';
  95           *codeset = ++cp;
  96
  97           while (cp[0] != '\0' && cp[0] != '@')
  98             ++cp;
  99
 100           mask |= XPG_CODESET;
 101
 102           if (*codeset != cp && (*codeset)[0] != '\0')
 103             {
 104               *normalized_codeset = _nl_normalize_codeset (*codeset,
 105                                                            cp - *codeset);
 106               if (strcmp (*codeset, *normalized_codeset) == 0)
 107                 free ((char *) *normalized_codeset);
 108               else
 109                 mask |= XPG_NORM_CODESET;
 110             }
 111         }
 112     }
 113
 114   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 115     {
 116       /* Next is the modifier.  */
 117       syntax = cp[0] == '@' ? xpg : cen;
 118       cp[0] = '\0';
 119       *modifier = ++cp;
 120
 121       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 122              && cp[0] != ',' && cp[0] != '_')
 123         ++cp;
 124
 125       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 126     }
 127
 128   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 129     {
 130       syntax = cen;
 131
 132       if (cp[0] == '+')
 133         {
 134           /* Next is special application (CEN syntax).  */
 135           cp[0] = '\0';
 136           *special = ++cp;
 137
 138           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 139             ++cp;
 140
 141           mask |= CEN_SPECIAL;
 142         }
 143
 144       if (cp[0] == ',')
 145         {
 146           /* Next is sponsor (CEN syntax).  */
 147           cp[0] = '\0';
 148           *sponsor = ++cp;
 149
 150           while (cp[0] != '\0' && cp[0] != '_')
 151             ++cp;
 152
 153           mask |= CEN_SPONSOR;
 154         }
 155
 156       if (cp[0] == '_')
 157         {
 158           /* Next is revision (CEN syntax).  */
 159           cp[0] = '\0';
 160           *revision = ++cp;
 161
 162           mask |= CEN_REVISION;
 163         }
 164     }
 165
 166   /* For CEN syntax values it might be important to have the
 167      separator character in the file name, not for XPG syntax.  */
 168   if (syntax == xpg)
 169     {
 170       if (*territory != NULL && (*territory)[0] == '\0')
 171         mask &= ~TERRITORY;
 172
 173       if (*codeset != NULL && (*codeset)[0] == '\0')
 174         mask &= ~XPG_CODESET;
 175
 176       if (*modifier != NULL && (*modifier)[0] == '\0')
 177         mask &= ~XPG_MODIFIER;
 178     }
 179
 180   return mask;
 181 }