locale/programs/locale-spec.c

   1 /* Handle special requests.
   2    Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 # include <config.h>
  23 #endif
  24
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <wchar.h>
  28
  29 #include "localeinfo.h"
  30
  31
  32 /* We provide support for some special names.  This helps debugging
  33    and may be useful for advanced usage of the provided information
  34    outside C.  */
  35 void
  36 locale_special (const char *name, int show_category_name,
  37                 int show_keyword_name)
  38 {
  39   /* "collate-elements": print collation elements of locale.  */
  40   if (strcmp (name, "collate-elements") == 0)
  41     {
  42       size_t nelem = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_ELEM_HASH_SIZE);
  43
  44       if (show_category_name)
  45         puts ("LC_COLLATE");
  46       if (show_keyword_name)
  47         fputs ("collate-elements=", stdout);
  48
  49       if (nelem != 0)
  50         {
  51           int first = 1;
  52           size_t cnt;
  53
  54           for (cnt = 0; cnt < nelem; ++cnt)
  55             if (__collate_element_hash[2 * cnt] != (~((u_int32_t) 0)))
  56               {
  57                 size_t idx = __collate_element_hash[2 * cnt];
  58
  59                 printf ("%s<%s>", first ? "" : ";",
  60                         &__collate_element_strings[idx]);
  61
  62 #if 0
  63                 /* We don't print the string.  This is only confusing
  64                    because only the programs have to know the
  65                    encoding.  The code is left in place because it
  66                    shows how to get the information.  */
  67                 {
  68                   const wchar_t *wp;
  69
  70                   idx = __collate_element_hash[2 * cnt + 1];
  71                   wp = &__collate_element_values[idx];
  72                   while (*wp != L'\0')
  73                     {
  74                       /********************************************\
  75                       |* XXX The element values are really wide   *|
  76                       |* chars.  But we are currently not able to *|
  77                       |* print these so fake here.                *|
  78                       \********************************************/
  79                       int ch = wctob (*wp++);
  80                       if (ch != EOF)
  81                         putchar (ch);
  82                       else
  83                         fputs ("<??\?>", stdout);
  84                     }
  85
  86                   putchar ('"');
  87                 }
  88 #endif
  89                 first = 0;
  90               }
  91         }
  92       putchar ('\n');
  93       return;
  94     }
  95
  96   if (strcmp (name, "collate-classes") == 0)
  97     {
  98       size_t nelem = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_SYMB_HASH_SIZE);
  99       size_t cnt;
 100       int first = 1;
 101
 102       if (show_category_name)
 103         puts ("LC_COLLATE");
 104       if (show_keyword_name)
 105         fputs ("collate-classes=", stdout);
 106
 107       for (cnt = 0; cnt < nelem; ++cnt)
 108         if (__collate_symbol_hash[2 * cnt] != 0xffffffff)
 109           {
 110             printf ("%s<%s>", first ? "" : ",",
 111                     &__collate_symbol_strings[__collate_symbol_hash[2 * cnt]]);
 112 #if 0
 113             {
 114               size_t idx = __collate_symbol_hash[2 * cnt + 1];
 115               size_t cls;
 116
 117               putchar ('=');
 118               for (cls = 0; cls < __collate_symbol_classes[idx]; ++cls)
 119                 printf ("%s%d", cls == 0 ? "" : ":",
 120                         __collate_symbol_classes[idx + 1 + cls]);
 121             }
 122 #endif
 123             first = 0;
 124           }
 125       putchar ('\n');
 126       return;
 127     }
 128 }