locale/programs/locale-spec.c

   1 /* Handle special requests.
   2    Copyright (C) 1996-2017 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    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published
   8    by the Free Software Foundation; version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program 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
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22
  23 #include <error.h>
  24 #include <libintl.h>
  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 #if 0
  40   /* "collate-elements": print collation elements of locale.  */
  41   if (strcmp (name, "collate-elements") == 0)
  42     {
  43       size_t nelem = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_ELEM_HASH_SIZE);
  44
  45       if (show_category_name)
  46         puts ("LC_COLLATE");
  47       if (show_keyword_name)
  48         fputs ("collate-elements=", stdout);
  49
  50       if (nelem != 0)
  51         {
  52           int first = 1;
  53           size_t cnt;
  54
  55           for (cnt = 0; cnt < nelem; ++cnt)
  56             if (__collate_element_hash[2 * cnt] != (~((u_int32_t) 0)))
  57               {
  58                 size_t idx = __collate_element_hash[2 * cnt];
  59
  60                 printf ("%s<%s>", first ? "" : ";",
  61                         &__collate_element_strings[idx]);
  62
  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                 first = 0;
  89               }
  90         }
  91       putchar ('\n');
  92       return;
  93     }
  94
  95   if (strcmp (name, "collate-classes") == 0)
  96     {
  97       size_t nelem = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_SYMB_HASH_SIZE);
  98       size_t cnt;
  99       int first = 1;
 100
 101       if (show_category_name)
 102         puts ("LC_COLLATE");
 103       if (show_keyword_name)
 104         fputs ("collate-classes=", stdout);
 105
 106       for (cnt = 0; cnt < nelem; ++cnt)
 107         if (__collate_symbol_hash[2 * cnt] != 0xffffffff)
 108           {
 109             printf ("%s<%s>", first ? "" : ",",
 110                     &__collate_symbol_strings[__collate_symbol_hash[2 * cnt]]);
 111 #if 0
 112             {
 113               size_t idx = __collate_symbol_hash[2 * cnt + 1];
 114               size_t cls;
 115
 116               putchar ('=');
 117               for (cls = 0; cls < __collate_symbol_classes[idx]; ++cls)
 118                 printf ("%s%d", cls == 0 ? "" : ":",
 119                         __collate_symbol_classes[idx + 1 + cls]);
 120             }
 121 #endif
 122             first = 0;
 123           }
 124       putchar ('\n');
 125       return;
 126     }
 127 #endif
 128
 129   /* If nothing matches, fail.  */
 130   error (1, 0, gettext ("unknown name \"%s\""), name);
 131 }