intl/explodename.c

   1 /* Copyright (C) 1995, 1996 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.  The master source lives in /gd/gnu/lib.
   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
  19 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  20 Cambridge, MA 02139, USA.  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 # include <config.h>
  24 #endif
  25
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 #include "loadinfo.h"
  30
  31 /* On some strange systems still no definition of NULL is found.  Sigh!  */
  32 #ifndef NULL
  33 # if defined __STDC__ && __STDC__
  34 #  define NULL ((void *) 0)
  35 # else
  36 #  define NULL 0
  37 # endif
  38 #endif
  39
  40 /* @@ end of prolog @@ */
  41
  42 int
  43 _nl_explode_name (name, language, modifier, territory, codeset,
  44                   normalized_codeset, special, sponsor, revision)
  45      char *name;
  46      const char **language;
  47      const char **modifier;
  48      const char **territory;
  49      const char **codeset;
  50      const char **normalized_codeset;
  51      const char **special;
  52      const char **sponsor;
  53      const char **revision;
  54 {
  55   enum { undecided, xpg, cen } syntax;
  56   char *cp;
  57   int mask;
  58
  59   *modifier = NULL;
  60   *territory = NULL;
  61   *codeset = NULL;
  62   *normalized_codeset = NULL;
  63   *special = NULL;
  64   *sponsor = NULL;
  65   *revision = NULL;
  66
  67   /* Now we determine the single parts of the locale name.  First
  68      look for the language.  Termination symbols are `_' and `@' if
  69      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  70   mask = 0;
  71   syntax = undecided;
  72   *language = cp = name;
  73   while (cp[0] != '\0' && cp[0] != '_' && cp[0] != '@'
  74          && cp[0] != '+' && cp[0] != ',')
  75     ++cp;
  76
  77   if (*language == cp)
  78     /* This does not make sense: language has to be specified.  Use
  79        this entry as it is without exploding.  Perhaps it is an alias.  */
  80     cp = strchr (*language, '\0');
  81   else if (cp[0] == '_')
  82     {
  83       /* Next is the territory.  */
  84       cp[0] = '\0';
  85       *territory = ++cp;
  86
  87       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
  88              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
  89         ++cp;
  90
  91       mask |= TERRITORY;
  92
  93       if (cp[0] == '.')
  94         {
  95           /* Next is the codeset.  */
  96           syntax = xpg;
  97           cp[0] = '\0';
  98           *codeset = ++cp;
  99
 100           while (cp[0] != '\0' && cp[0] != '@')
 101             ++cp;
 102
 103           mask |= XPG_CODESET;
 104
 105           if (*codeset != cp && (*codeset)[0] != '\0')
 106             {
 107               *normalized_codeset = _nl_normalize_codeset (*codeset,
 108                                                            cp - *codeset);
 109               if (strcmp (*codeset, *normalized_codeset) == 0)
 110                 free ((char *) *normalized_codeset);
 111               else
 112                 mask |= XPG_NORM_CODESET;
 113             }
 114         }
 115     }
 116
 117   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 118     {
 119       /* Next is the modifier.  */
 120       syntax = cp[0] == '@' ? xpg : cen;
 121       cp[0] = '\0';
 122       *modifier = ++cp;
 123
 124       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 125              && cp[0] != ',' && cp[0] != '_')
 126         ++cp;
 127
 128       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 129     }
 130
 131   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 132     {
 133       syntax = cen;
 134
 135       if (cp[0] == '+')
 136         {
 137           /* Next is special application (CEN syntax).  */
 138           cp[0] = '\0';
 139           *special = ++cp;
 140
 141           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 142             ++cp;
 143
 144           mask |= CEN_SPECIAL;
 145         }
 146
 147       if (cp[0] == ',')
 148         {
 149           /* Next is sponsor (CEN syntax).  */
 150           cp[0] = '\0';
 151           *sponsor = ++cp;
 152
 153           while (cp[0] != '\0' && cp[0] != '_')
 154             ++cp;
 155
 156           mask |= CEN_SPONSOR;
 157         }
 158
 159       if (cp[0] == '_')
 160         {
 161           /* Next is revision (CEN syntax).  */
 162           cp[0] = '\0';
 163           *revision = ++cp;
 164
 165           mask |= CEN_REVISION;
 166         }
 167     }
 168
 169   /* For CEN sytnax values it might be important to have the
 170      separator character in the file name, not for XPG syntax.  */
 171   if (syntax == xpg)
 172     {
 173       if (*territory != NULL && (*territory)[0] == '\0')
 174         mask &= ~TERRITORY;
 175
 176       if (*codeset != NULL && (*codeset)[0] == '\0')
 177         mask &= ~XPG_CODESET;
 178
 179       if (*modifier != NULL && (*modifier)[0] == '\0')
 180         mask &= ~XPG_MODIFIER;
 181     }
 182
 183   return mask;
 184 }