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/* Implementation of the textdomain(3) function.

   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.

   Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.

   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; either version 2, 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, write to the Free Software Foundation,

   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#if defined STDC_HEADERS || defined _LIBC

# include <stdlib.h>

#endif

#if defined STDC_HEADERS || defined HAVE_STRING_H || defined _LIBC

# include <string.h>

#else

# include <strings.h>

# ifndef memcpy

#  define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num)

# endif

#endif

#ifdef _LIBC

# include <libintl.h>

#else

# include "libgettext.h"

#endif

/* @@ end of prolog @@ */

/* Name of the default text domain.  */

extern const char _nl_default_default_domain[];

/* Default text domain in which entries for gettext(3) are to be found.  */

extern const char *_nl_current_default_domain;

/* Names for the libintl functions are a problem.  They must not clash

   with existing names and they should follow ANSI C.  But this source

   code is also used in GNU C Library where the names have a __

   prefix.  So we have to make a difference here.  */

#ifdef _LIBC

# define TEXTDOMAIN __textdomain

# ifndef strdup

#  define strdup(str) __strdup (str)

# endif

#else

# define TEXTDOMAIN textdomain__

#endif

/* Set the current default message catalog to DOMAINNAME.

   If DOMAINNAME is null, return the current default.

   If DOMAINNAME is "", reset to the default of "messages".  */

char *

TEXTDOMAIN (domainname)

     const char *domainname;

{

  char *old;

  /* A NULL pointer requests the current setting.  */

  if (domainname == NULL)

    return (char *) _nl_current_default_domain;

  old = (char *) _nl_current_default_domain;

  /* If domain name is the null string set to default domain "messages".  */

  if (domainname[0] == '\0'

      || strcmp (domainname, _nl_default_default_domain) == 0)

    _nl_current_default_domain = _nl_default_default_domain;

  else

    {

      /* If the following malloc fails `_nl_current_default_domain'

         will be NULL.  This value will be returned and so signals we

         are out of core.  */

#if defined _LIBC || defined HAVE_STRDUP

      _nl_current_default_domain = strdup (domainname);

#else

      size_t len = strlen (domainname) + 1;

      char *cp = (char *) malloc (len);

      if (cp != NULL)

        memcpy (cp, domainname, len);

      _nl_current_default_domain = cp;

#endif

    }

  if (old != _nl_default_default_domain)

    free (old);

  return (char *) _nl_current_default_domain;

}

#ifdef _LIBC

/* Alias for function name in GNU C Library.  */

weak_alias (__textdomain, textdomain);

#endif