intl/explodename.c

   1 /* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3 Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
   4
   5 The GNU C Library is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU Library General Public License as
   7 published by the Free Software Foundation; either version 2 of the
   8 License, or (at your option) any later version.
   9
  10 The GNU C Library is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 Library General Public License for more details.
  14
  15 You should have received a copy of the GNU Library General Public
  16 License along with the GNU C Library; see the file COPYING.LIB.  If
  17 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18 Boston, MA 02111-1307, USA.  */
  19
  20 #include <stdlib.h>
  21 #include <string.h>
  22
  23 #include "loadinfo.h"
  24
  25 int
  26 _nl_explode_name (name, language, modifier, territory, codeset,
  27                   normalized_codeset, special, sponsor, revision)
  28      char *name;
  29      const char **language;
  30      const char **modifier;
  31      const char **territory;
  32      const char **codeset;
  33      const char **normalized_codeset;
  34      const char **special;
  35      const char **sponsor;
  36      const char **revision;
  37 {
  38   enum { undecided, xpg, cen } syntax;
  39   char *cp;
  40   int mask;
  41
  42   *modifier = NULL;
  43   *territory = NULL;
  44   *codeset = NULL;
  45   *normalized_codeset = NULL;
  46   *special = NULL;
  47   *sponsor = NULL;
  48   *revision = NULL;
  49
  50   /* Now we determine the single parts of the locale name.  First
  51      look for the language.  Termination symbols are `_' and `@' if
  52      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  53   mask = 0;
  54   syntax = undecided;
  55   *language = cp = name;
  56   while (cp[0] != '\0' && cp[0] != '_' && cp[0] != '@'
  57          && cp[0] != '+' && cp[0] != ',')
  58     ++cp;
  59
  60   if (*language == cp)
  61     /* This does not make sense: language has to be specified.  Use
  62        this entry as it is without exploding.  Perhaps it is an alias.  */
  63     cp = strchr (*language, '\0');
  64   else if (cp[0] == '_')
  65     {
  66       /* Next is the territory.  */
  67       cp[0] = '\0';
  68       *territory = ++cp;
  69
  70       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
  71              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
  72         ++cp;
  73
  74       mask |= TERRITORY;
  75
  76       if (cp[0] == '.')
  77         {
  78           /* Next is the codeset.  */
  79           syntax = xpg;
  80           cp[0] = '\0';
  81           *codeset = ++cp;
  82
  83           while (cp[0] != '\0' && cp[0] != '@')
  84             ++cp;
  85
  86           mask |= XPG_CODESET;
  87
  88           if (*codeset != cp && (*codeset)[0] != '\0')
  89             {
  90               *normalized_codeset = _nl_normalize_codeset (*codeset,
  91                                                            cp - *codeset);
  92               if (strcmp (*codeset, *normalized_codeset) == 0)
  93                 free ((char *) *normalized_codeset);
  94               else
  95                 mask |= XPG_NORM_CODESET;
  96             }
  97         }
  98     }
  99
 100   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 101     {
 102       /* Next is the modifier.  */
 103       syntax = cp[0] == '@' ? xpg : cen;
 104       cp[0] = '\0';
 105       *modifier = ++cp;
 106
 107       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 108              && cp[0] != ',' && cp[0] != '_')
 109         ++cp;
 110
 111       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 112     }
 113
 114   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 115     {
 116       syntax = cen;
 117
 118       if (cp[0] == '+')
 119         {
 120           /* Next is special application (CEN syntax).  */
 121           cp[0] = '\0';
 122           *special = ++cp;
 123
 124           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 125             ++cp;
 126
 127           mask |= CEN_SPECIAL;
 128         }
 129
 130       if (cp[0] == ',')
 131         {
 132           /* Next is sponsor (CEN syntax).  */
 133           cp[0] = '\0';
 134           *sponsor = ++cp;
 135
 136           while (cp[0] != '\0' && cp[0] != '_')
 137             ++cp;
 138
 139           mask |= CEN_SPONSOR;
 140         }
 141
 142       if (cp[0] == '_')
 143         {
 144           /* Next is revision (CEN syntax).  */
 145           cp[0] = '\0';
 146           *revision = ++cp;
 147
 148           mask |= CEN_REVISION;
 149         }
 150     }
 151
 152   /* For CEN sytnax values it might be important to have the
 153      separator character in the file name, not for XPG syntax.  */
 154   if (syntax == xpg)
 155     {
 156       if (*territory != NULL && (*territory)[0] == '\0')
 157         mask &= ~TERRITORY;
 158
 159       if (*codeset != NULL && (*codeset)[0] == '\0')
 160         mask &= ~XPG_CODESET;
 161
 162       if (*modifier != NULL && (*modifier)[0] == '\0')
 163         mask &= ~XPG_MODIFIER;
 164     }
 165
 166   return mask;
 167 }