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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
   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.  */

# include <config.h>

#if defined STDC_HEADERS || defined _LIBC
# include <stdlib.h>

#if defined STDC_HEADERS || defined HAVE_STRING_H || defined _LIBC
# include <string.h>
# include <strings.h>
# ifndef memcpy
#  define memcpy(Dst, Src, Num) bcopy (Src, Dst, Num)
# endif

#ifdef _LIBC
# include <libintl.h>
# include "libgettext.h"

/* @@ 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
# define TEXTDOMAIN textdomain__

/* 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;
      /* 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);
      size_t len = strlen (domainname) + 1;
      char *cp = (char *) malloc (len);
      if (cp != NULL)
      memcpy (cp, domainname, len);
      _nl_current_default_domain = cp;

  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);

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