lib/intl/explodename.c

   1 /* explodename.c */
   2
   3 /* Copyright (C) 1995-1998, 2000, 2001, 2005-2009 Free Software Foundation, Inc.
   4    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
   5
   6    This file is part of GNU Bash.
   7
   8    Bash is free software: you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation, either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    Bash is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with Bash.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  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 char *
  44 _nl_find_language (name)
  45      const char *name;
  46 {
  47   while (name[0] != '\0' && name[0] != '_' && name[0] != '@'
  48          && name[0] != '+' && name[0] != ',')
  49     ++name;
  50
  51   return (char *) name;
  52 }
  53
  54
  55 int
  56 _nl_explode_name (name, language, modifier, territory, codeset,
  57                   normalized_codeset, special, sponsor, revision)
  58      char *name;
  59      const char **language;
  60      const char **modifier;
  61      const char **territory;
  62      const char **codeset;
  63      const char **normalized_codeset;
  64      const char **special;
  65      const char **sponsor;
  66      const char **revision;
  67 {
  68   enum { undecided, xpg, cen } syntax;
  69   char *cp;
  70   int mask;
  71
  72   *modifier = NULL;
  73   *territory = NULL;
  74   *codeset = NULL;
  75   *normalized_codeset = NULL;
  76   *special = NULL;
  77   *sponsor = NULL;
  78   *revision = NULL;
  79
  80   /* Now we determine the single parts of the locale name.  First
  81      look for the language.  Termination symbols are `_' and `@' if
  82      we use XPG4 style, and `_', `+', and `,' if we use CEN syntax.  */
  83   mask = 0;
  84   syntax = undecided;
  85   *language = cp = name;
  86   cp = _nl_find_language (*language);
  87
  88   if (*language == cp)
  89     /* This does not make sense: language has to be specified.  Use
  90        this entry as it is without exploding.  Perhaps it is an alias.  */
  91     cp = strchr (*language, '\0');
  92   else if (cp[0] == '_')
  93     {
  94       /* Next is the territory.  */
  95       cp[0] = '\0';
  96       *territory = ++cp;
  97
  98       while (cp[0] != '\0' && cp[0] != '.' && cp[0] != '@'
  99              && cp[0] != '+' && cp[0] != ',' && cp[0] != '_')
 100         ++cp;
 101
 102       mask |= TERRITORY;
 103
 104       if (cp[0] == '.')
 105         {
 106           /* Next is the codeset.  */
 107           syntax = xpg;
 108           cp[0] = '\0';
 109           *codeset = ++cp;
 110
 111           while (cp[0] != '\0' && cp[0] != '@')
 112             ++cp;
 113
 114           mask |= XPG_CODESET;
 115
 116           if (*codeset != cp && (*codeset)[0] != '\0')
 117             {
 118               *normalized_codeset = _nl_normalize_codeset (*codeset,
 119                                                            cp - *codeset);
 120               if (strcmp (*codeset, *normalized_codeset) == 0)
 121                 free ((char *) *normalized_codeset);
 122               else
 123                 mask |= XPG_NORM_CODESET;
 124             }
 125         }
 126     }
 127
 128   if (cp[0] == '@' || (syntax != xpg && cp[0] == '+'))
 129     {
 130       /* Next is the modifier.  */
 131       syntax = cp[0] == '@' ? xpg : cen;
 132       cp[0] = '\0';
 133       *modifier = ++cp;
 134
 135       while (syntax == cen && cp[0] != '\0' && cp[0] != '+'
 136              && cp[0] != ',' && cp[0] != '_')
 137         ++cp;
 138
 139       mask |= XPG_MODIFIER | CEN_AUDIENCE;
 140     }
 141
 142   if (syntax != xpg && (cp[0] == '+' || cp[0] == ',' || cp[0] == '_'))
 143     {
 144       syntax = cen;
 145
 146       if (cp[0] == '+')
 147         {
 148           /* Next is special application (CEN syntax).  */
 149           cp[0] = '\0';
 150           *special = ++cp;
 151
 152           while (cp[0] != '\0' && cp[0] != ',' && cp[0] != '_')
 153             ++cp;
 154
 155           mask |= CEN_SPECIAL;
 156         }
 157
 158       if (cp[0] == ',')
 159         {
 160           /* Next is sponsor (CEN syntax).  */
 161           cp[0] = '\0';
 162           *sponsor = ++cp;
 163
 164           while (cp[0] != '\0' && cp[0] != '_')
 165             ++cp;
 166
 167           mask |= CEN_SPONSOR;
 168         }
 169
 170       if (cp[0] == '_')
 171         {
 172           /* Next is revision (CEN syntax).  */
 173           cp[0] = '\0';
 174           *revision = ++cp;
 175
 176           mask |= CEN_REVISION;
 177         }
 178     }
 179
 180   /* For CEN syntax values it might be important to have the
 181      separator character in the file name, not for XPG syntax.  */
 182   if (syntax == xpg)
 183     {
 184       if (*territory != NULL && (*territory)[0] == '\0')
 185         mask &= ~TERRITORY;
 186
 187       if (*codeset != NULL && (*codeset)[0] == '\0')
 188         mask &= ~XPG_CODESET;
 189
 190       if (*modifier != NULL && (*modifier)[0] == '\0')
 191         mask &= ~XPG_MODIFIER;
 192     }
 193
 194   return mask;
 195 }