intl/explodename.c

   1 /* Copyright (C) 1995, 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
   2    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library 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 the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22
  23 #if defined STDC_HEADERS || defined _LIBC
  24 # include <stdlib.h>
  25 #endif
  26
  27 #if defined HAVE_STRING_H || defined _LIBC
  28 # include <string.h>
  29 #else
  30 # include <strings.h>
  31 #endif
  32 #include <sys/types.h>
  33
  34 #include "loadinfo.h"
  35
  36 /* On some strange systems still no definition of NULL is found.  Sigh!  */
  37 #ifndef NULL
  38 # if defined __STDC__ && __STDC__
  39 #  define NULL ((void *) 0)
  40 # else
  41 #  define NULL 0
  42 # endif
  43 #endif
  44
  45 /* @@ end of prolog @@ */
  46
  47 char *
  48 _nl_find_language (const char *name)
  49 {
  50   while (name[0] != '\0' && name[0] != '_' && name[0] != '@'
  51          && name[0] != '+' && name[0] != ',')
  52     ++name;
  53
  54   return (char *) name;
  55 }
  56
  57
  58 int
  59 _nl_explode_name (name, language, modifier, territory, codeset,
  60                   normalized_codeset, special, sponsor, revision)
  61      char *name;
  62      const char **language;
  63      const char **modifier;
  64      const char **territory;
  65      const char **codeset;
  66      const char **normalized_codeset;
  67      const char **special;
  68      const char **sponsor;
  69      const char **revision;
  70 {
  71   enum { undecided, xpg, cen } syntax;
  72   char *cp;
  73   int mask;
  74
  75   *modifier = NULL;
  76   *territory = NULL;
  77   *codeset = NULL;
  78   *normalized_codeset = NULL;
  79   *special = NULL;
  80   *sponsor = NULL;
  81   *revision = NULL;
  82
  83   /* Now we determine the single parts of the locale name.  First
  84      look for the language.  Termination symbols are `_' and `@' if
  85      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  86   mask = 0;
  87   syntax = undecided;
  88   *language = cp = name;
  89   cp = _nl_find_language (*language);
  90
  91   if (*language == cp)
  92     /* This does not make sense: language has to be specified.  Use
  93        this entry as it is without exploding.  Perhaps it is an alias.  */
  94     cp = strchr (*language, '\0');
  95   else if (cp[0] == '_')
  96     {
  97       /* Next is the territory.  */
  98       cp[0] = '\0';
  99       *territory = ++cp;
 100
 101       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
 102              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
 103         ++cp;
 104
 105       mask |= TERRITORY;
 106
 107       if (cp[0] == '.')
 108         {
 109           /* Next is the codeset.  */
 110           syntax = xpg;
 111           cp[0] = '\0';
 112           *codeset = ++cp;
 113
 114           while (cp[0] != '\0' && cp[0] != '@')
 115             ++cp;
 116
 117           mask |= XPG_CODESET;
 118
 119           if (*codeset != cp && (*codeset)[0] != '\0')
 120             {
 121               *normalized_codeset = _nl_normalize_codeset (*codeset,
 122                                                            cp - *codeset);
 123               if (strcmp (*codeset, *normalized_codeset) == 0)
 124                 free ((char *) *normalized_codeset);
 125               else
 126                 mask |= XPG_NORM_CODESET;
 127             }
 128         }
 129     }
 130
 131   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 132     {
 133       /* Next is the modifier.  */
 134       syntax = cp[0] == '@' ? xpg : cen;
 135       cp[0] = '\0';
 136       *modifier = ++cp;
 137
 138       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 139              && cp[0] != ',' && cp[0] != '_')
 140         ++cp;
 141
 142       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 143     }
 144
 145   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 146     {
 147       syntax = cen;
 148
 149       if (cp[0] == '+')
 150         {
 151           /* Next is special application (CEN syntax).  */
 152           cp[0] = '\0';
 153           *special = ++cp;
 154
 155           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 156             ++cp;
 157
 158           mask |= CEN_SPECIAL;
 159         }
 160
 161       if (cp[0] == ',')
 162         {
 163           /* Next is sponsor (CEN syntax).  */
 164           cp[0] = '\0';
 165           *sponsor = ++cp;
 166
 167           while (cp[0] != '\0' && cp[0] != '_')
 168             ++cp;
 169
 170           mask |= CEN_SPONSOR;
 171         }
 172
 173       if (cp[0] == '_')
 174         {
 175           /* Next is revision (CEN syntax).  */
 176           cp[0] = '\0';
 177           *revision = ++cp;
 178
 179           mask |= CEN_REVISION;
 180         }
 181     }
 182
 183   /* For CEN syntax values it might be important to have the
 184      separator character in the file name, not for XPG syntax.  */
 185   if (syntax == xpg)
 186     {
 187       if (*territory != NULL && (*territory)[0] == '\0')
 188         mask &= ~TERRITORY;
 189
 190       if (*codeset != NULL && (*codeset)[0] == '\0')
 191         mask &= ~XPG_CODESET;
 192
 193       if (*modifier != NULL && (*modifier)[0] == '\0')
 194         mask &= ~XPG_MODIFIER;
 195     }
 196
 197   return mask;
 198 }