/* Handle special requests.

   Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published

   by the Free Software Foundation; version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, see <http://www.gnu.org/licenses/>.  */

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include <error.h>

#include <libintl.h>

#include <stdio.h>

#include <string.h>

#include <wchar.h>

#include "localeinfo.h"

/* We provide support for some special names.  This helps debugging

   and may be useful for advanced usage of the provided information

   outside C.  */

void

locale_special (const char *name, int show_category_name,

		int show_keyword_name)

{

#if 0

  /* "collate-elements": print collation elements of locale.  */

  if (strcmp (name, "collate-elements") == 0)

    {

      size_t nelem = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_ELEM_HASH_SIZE);

      if (show_category_name)

	puts ("LC_COLLATE");

      if (show_keyword_name)

	fputs ("collate-elements=", stdout);

      if (nelem != 0)

	{

	  int first = 1;

	  size_t cnt;

	  for (cnt = 0; cnt < nelem; ++cnt)

	    if (__collate_element_hash[2 * cnt] != (~((uint32_t) 0)))

	      {

		size_t idx = __collate_element_hash[2 * cnt];

		printf ("%s<%s>", first ? "" : ";",

			&__collate_element_strings[idx]);

		/* We don't print the string.  This is only confusing

		   because only the programs have to know the

		   encoding.  The code is left in place because it

		   shows how to get the information.  */

		{

		  const wchar_t *wp;

		  idx = __collate_element_hash[2 * cnt + 1];

		  wp = &__collate_element_values[idx];

		  while (*wp != L'\0')

		    {

		      /********************************************\

		      |* XXX The element values are really wide	  *|

		      |* chars.  But we are currently not able to *|

		      |* print these so fake here.		  *|

		      \********************************************/

		      int ch = wctob (*wp++);

		      if (ch != EOF)

			putchar (ch);

		      else

			fputs ("", stdout);

		    }

		  putchar ('"');

		}

		first = 0;

	      }

	}

      putchar ('\n');

      return;

    }

  if (strcmp (name, "collate-classes") == 0)

    {

      size_t nelem = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_SYMB_HASH_SIZE);

      size_t cnt;

      int first = 1;

      if (show_category_name)

	puts ("LC_COLLATE");

      if (show_keyword_name)

	fputs ("collate-classes=", stdout);

      for (cnt = 0; cnt < nelem; ++cnt)

	if (__collate_symbol_hash[2 * cnt] != 0xffffffff)

	  {

	    printf ("%s<%s>", first ? "" : ",",

		    &__collate_symbol_strings[__collate_symbol_hash[2 * cnt]]);

#if 0

	    {

	      size_t idx = __collate_symbol_hash[2 * cnt + 1];

	      size_t cls;

	      putchar ('=');

	      for (cls = 0; cls < __collate_symbol_classes[idx]; ++cls)

		printf ("%s%d", cls == 0 ? "" : ":",

			__collate_symbol_classes[idx + 1 + cls]);

	    }

#endif

	    first = 0;

	  }

      putchar ('\n');

      return;

    }

#endif

  /* If nothing matches, fail.  */

  error (1, 0, gettext ("unknown name \"%s\""), name);

}