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/* Charset name normalization.

   Copyright (C) 2001 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@cygnus.com>, 2001.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

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

   License along with the GNU C Library; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

#include <ctype.h>

#include <locale.h>

static inline void

strip (char *wp, const char *s)

{

  int slash_count = 0;

  char old_locale[20], *old_locale_p;

  /* Set locale to default C locale. */

  old_locale_p = setlocale(LC_ALL, "C");

  strncpy(old_locale, old_locale_p, 20);

  while (*s != '\0')

    {

      if (isalnum (*s)

          || *s == '_' || *s == '-' || *s == '.')

        *wp++ = toupper (*s);

      else if (*s == '/')

        {

          if (++slash_count == 3)

            break;

          *wp++ = '/';

        }

      ++s;

    }

  while (slash_count++ < 2)

    *wp++ = '/';

  *wp = '\0';

  setlocale(LC_ALL, old_locale);

}

static char * __attribute__ ((unused))

upstr (char *dst, const char *str)

{

  char *cp = dst;

  char old_locale[20], *old_locale_p;

  /* Set locale to default C locale. */

  old_locale_p = setlocale(LC_ALL, "C");

  strncpy(old_locale, old_locale_p, 20);

  while ((*cp++ = toupper (*str++)) != '\0')

    /* nothing */;

  setlocale(LC_ALL, old_locale);

  return dst;

}

/* If NAME is an codeset alias expand it.  */

extern int __gconv_compare_alias (const char *name1, const char *name2)

     internal_function;