intl/explodename.c

   1 /* Copyright (C) 1995-1998, 2000, 2001 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 it
   5    under the terms of the GNU Library General Public License as published
   6    by 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 GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with this program; if not, write to the Free Software
  16    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
  17    USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <sys/types.h>
  26
  27 #include "loadinfo.h"
  28
  29 /* On some strange systems still no definition of NULL is found.  Sigh!  */
  30 #ifndef NULL
  31 # if defined __STDC__ && __STDC__
  32 #  define NULL ((void *) 0)
  33 # else
  34 #  define NULL 0
  35 # endif
  36 #endif
  37
  38 /* @@ end of prolog @@ */
  39
  40 char *
  41 _nl_find_language (name)
  42      const char *name;
  43 {
  44   while (name[0] != '\0' && name[0] != '_' && name[0] != '@'
  45          && name[0] != '+' && name[0] != ',')
  46     ++name;
  47
  48   return (char *) name;
  49 }
  50
  51
  52 int
  53 _nl_explode_name (name, language, modifier, territory, codeset,
  54                   normalized_codeset, special, sponsor, revision)
  55      char *name;
  56      const char **language;
  57      const char **modifier;
  58      const char **territory;
  59      const char **codeset;
  60      const char **normalized_codeset;
  61      const char **special;
  62      const char **sponsor;
  63      const char **revision;
  64 {
  65   enum { undecided, xpg, cen } syntax;
  66   char *cp;
  67   int mask;
  68
  69   *modifier = NULL;
  70   *territory = NULL;
  71   *codeset = NULL;
  72   *normalized_codeset = NULL;
  73   *special = NULL;
  74   *sponsor = NULL;
  75   *revision = NULL;
  76
  77   /* Now we determine the single parts of the locale name.  First
  78      look for the language.  Termination symbols are `_' and `@' if
  79      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  80   mask = 0;
  81   syntax = undecided;
  82   *language = cp = name;
  83   cp = _nl_find_language (*language);
  84
  85   if (*language == cp)
  86     /* This does not make sense: language has to be specified.  Use
  87        this entry as it is without exploding.  Perhaps it is an alias.  */
  88     cp = strchr (*language, '\0');
  89   else if (cp[0] == '_')
  90     {
  91       /* Next is the territory.  */
  92       cp[0] = '\0';
  93       *territory = ++cp;
  94
  95       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
  96              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
  97         ++cp;
  98
  99       mask |= TERRITORY;
 100
 101       if (cp[0] == '.')
 102         {
 103           /* Next is the codeset.  */
 104           syntax = xpg;
 105           cp[0] = '\0';
 106           *codeset = ++cp;
 107
 108           while (cp[0] != '\0' && cp[0] != '@')
 109             ++cp;
 110
 111           mask |= XPG_CODESET;
 112
 113           if (*codeset != cp && (*codeset)[0] != '\0')
 114             {
 115               *normalized_codeset = _nl_normalize_codeset (*codeset,
 116                                                            cp - *codeset);
 117               if (strcmp (*codeset, *normalized_codeset) == 0)
 118                 free ((char *) *normalized_codeset);
 119               else
 120                 mask |= XPG_NORM_CODESET;
 121             }
 122         }
 123     }
 124
 125   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 126     {
 127       /* Next is the modifier.  */
 128       syntax = cp[0] == '@' ? xpg : cen;
 129       cp[0] = '\0';
 130       *modifier = ++cp;
 131
 132       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 133              && cp[0] != ',' && cp[0] != '_')
 134         ++cp;
 135
 136       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 137     }
 138
 139   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 140     {
 141       syntax = cen;
 142
 143       if (cp[0] == '+')
 144         {
 145           /* Next is special application (CEN syntax).  */
 146           cp[0] = '\0';
 147           *special = ++cp;
 148
 149           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 150             ++cp;
 151
 152           mask |= CEN_SPECIAL;
 153         }
 154
 155       if (cp[0] == ',')
 156         {
 157           /* Next is sponsor (CEN syntax).  */
 158           cp[0] = '\0';
 159           *sponsor = ++cp;
 160
 161           while (cp[0] != '\0' && cp[0] != '_')
 162             ++cp;
 163
 164           mask |= CEN_SPONSOR;
 165         }
 166
 167       if (cp[0] == '_')
 168         {
 169           /* Next is revision (CEN syntax).  */
 170           cp[0] = '\0';
 171           *revision = ++cp;
 172
 173           mask |= CEN_REVISION;
 174         }
 175     }
 176
 177   /* For CEN syntax values it might be important to have the
 178      separator character in the file name, not for XPG syntax.  */
 179   if (syntax == xpg)
 180     {
 181       if (*territory != NULL && (*territory)[0] == '\0')
 182         mask &= ~TERRITORY;
 183
 184       if (*codeset != NULL && (*codeset)[0] == '\0')
 185         mask &= ~XPG_CODESET;
 186
 187       if (*modifier != NULL && (*modifier)[0] == '\0')
 188         mask &= ~XPG_MODIFIER;
 189     }
 190
 191   return mask;
 192 }