intl/explodename.c

   1 /* Copyright (C) 1995, 1996, 1997, 1998 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 #if defined STDC_HEADERS || defined _LIBC
  27 # include <stdlib.h>
  28 #endif
  29
  30 #if defined HAVE_STRING_H || defined _LIBC
  31 # include <string.h>
  32 #else
  33 # include <strings.h>
  34 #endif
  35 #include <sys/types.h>
  36
  37 #include "loadinfo.h"
  38
  39 /* On some strange systems still no definition of NULL is found.  Sigh!  */
  40 #ifndef NULL
  41 # if defined __STDC__ && __STDC__
  42 #  define NULL ((void *) 0)
  43 # else
  44 #  define NULL 0
  45 # endif
  46 #endif
  47
  48 /* @@ end of prolog @@ */
  49
  50 char *
  51 _nl_find_language (const char *name)
  52 {
  53   while (name[0] != '\0' && name[0] != '_' && name[0] != '@'
  54          && name[0] != '+' && name[0] != ',')
  55     ++name;
  56
  57   return (char *) name;
  58 }
  59
  60
  61 int
  62 _nl_explode_name (name, language, modifier, territory, codeset,
  63                   normalized_codeset, special, sponsor, revision)
  64      char *name;
  65      const char **language;
  66      const char **modifier;
  67      const char **territory;
  68      const char **codeset;
  69      const char **normalized_codeset;
  70      const char **special;
  71      const char **sponsor;
  72      const char **revision;
  73 {
  74   enum { undecided, xpg, cen } syntax;
  75   char *cp;
  76   int mask;
  77
  78   *modifier = NULL;
  79   *territory = NULL;
  80   *codeset = NULL;
  81   *normalized_codeset = NULL;
  82   *special = NULL;
  83   *sponsor = NULL;
  84   *revision = NULL;
  85
  86   /* Now we determine the single parts of the locale name.  First
  87      look for the language.  Termination symbols are `_' and `@' if
  88      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  89   mask = 0;
  90   syntax = undecided;
  91   *language = cp = name;
  92   cp = _nl_find_language (*language);
  93
  94   if (*language == cp)
  95     /* This does not make sense: language has to be specified.  Use
  96        this entry as it is without exploding.  Perhaps it is an alias.  */
  97     cp = strchr (*language, '\0');
  98   else if (cp[0] == '_')
  99     {
 100       /* Next is the territory.  */
 101       cp[0] = '\0';
 102       *territory = ++cp;
 103
 104       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
 105              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
 106         ++cp;
 107
 108       mask |= TERRITORY;
 109
 110       if (cp[0] == '.')
 111         {
 112           /* Next is the codeset.  */
 113           syntax = xpg;
 114           cp[0] = '\0';
 115           *codeset = ++cp;
 116
 117           while (cp[0] != '\0' && cp[0] != '@')
 118             ++cp;
 119
 120           mask |= XPG_CODESET;
 121
 122           if (*codeset != cp && (*codeset)[0] != '\0')
 123             {
 124               *normalized_codeset = _nl_normalize_codeset (*codeset,
 125                                                            cp - *codeset);
 126               if (strcmp (*codeset, *normalized_codeset) == 0)
 127                 free ((char *) *normalized_codeset);
 128               else
 129                 mask |= XPG_NORM_CODESET;
 130             }
 131         }
 132     }
 133
 134   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 135     {
 136       /* Next is the modifier.  */
 137       syntax = cp[0] == '@' ? xpg : cen;
 138       cp[0] = '\0';
 139       *modifier = ++cp;
 140
 141       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 142              && cp[0] != ',' && cp[0] != '_')
 143         ++cp;
 144
 145       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 146     }
 147
 148   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 149     {
 150       syntax = cen;
 151
 152       if (cp[0] == '+')
 153         {
 154           /* Next is special application (CEN syntax).  */
 155           cp[0] = '\0';
 156           *special = ++cp;
 157
 158           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 159             ++cp;
 160
 161           mask |= CEN_SPECIAL;
 162         }
 163
 164       if (cp[0] == ',')
 165         {
 166           /* Next is sponsor (CEN syntax).  */
 167           cp[0] = '\0';
 168           *sponsor = ++cp;
 169
 170           while (cp[0] != '\0' && cp[0] != '_')
 171             ++cp;
 172
 173           mask |= CEN_SPONSOR;
 174         }
 175
 176       if (cp[0] == '_')
 177         {
 178           /* Next is revision (CEN syntax).  */
 179           cp[0] = '\0';
 180           *revision = ++cp;
 181
 182           mask |= CEN_REVISION;
 183         }
 184     }
 185
 186   /* For CEN syntax values it might be important to have the
 187      separator character in the file name, not for XPG syntax.  */
 188   if (syntax == xpg)
 189     {
 190       if (*territory != NULL && (*territory)[0] == '\0')
 191         mask &= ~TERRITORY;
 192
 193       if (*codeset != NULL && (*codeset)[0] == '\0')
 194         mask &= ~XPG_CODESET;
 195
 196       if (*modifier != NULL && (*modifier)[0] == '\0')
 197         mask &= ~XPG_MODIFIER;
 198     }
 199
 200   return mask;
 201 }