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