text: /* Implementation of the textdomain(3) function.
     Copyright (C) 1995-1998, 2000, 2001 Free Software Foundation, Inc.
     This file is part of the GNU C Library.
  
     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.  */
  
  #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), (Dst))
  # endif
  #endif
  
  #ifdef _LIBC
  # include <libintl.h>
  #else
  # include "libgnuintl.h"
  #endif
  #include "gettextP.h"
  
  #ifdef _LIBC
  /* We have to handle multi-threaded applications.  */
  # include <bits/libc-lock.h>
  #else
  /* Provide dummy implementation if this is outside glibc.  */
  # define __libc_rwlock_define(CLASS, NAME)
  # define __libc_rwlock_wrlock(NAME)
  # define __libc_rwlock_unlock(NAME)
  #endif
  
  /* The internal variables in the standalone libintl.a must have different
     names than the internal variables in GNU libc, otherwise programs
     using libintl.a cannot be linked statically.  */
  #if !defined _LIBC
  # define _nl_default_default_domain _nl_default_default_domain__
  # define _nl_current_default_domain _nl_current_default_domain__
  #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
  
  /* Lock variable to protect the global data in the gettext implementation.  */
  __libc_rwlock_define (extern, _nl_state_lock)
  
  /* 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 *new_domain;
    char *old_domain;
  
    /* A NULL pointer requests the current setting.  */
    if (domainname == NULL)
      return (char *) _nl_current_default_domain;
  
    __libc_rwlock_wrlock (_nl_state_lock);
  
    old_domain = (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;
        new_domain = (char *) _nl_current_default_domain;
      }
    else if (strcmp (domainname, old_domain) == 0)
      /* This can happen and people will use it to signal that some
         environment variable changed.  */
      new_domain = old_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
        new_domain = strdup (domainname);
  #else
        size_t len = strlen (domainname) + 1;
        new_domain = (char *) malloc (len);
        if (new_domain != NULL)
  	memcpy (new_domain, domainname, len);
  #endif
  
        if (new_domain != NULL)
  	_nl_current_default_domain = new_domain;
      }
  
    /* We use this possibility to signal a change of the loaded catalogs
       since this is most likely the case and there is no other easy we
       to do it.  Do it only when the call was successful.  */
    if (new_domain != NULL)
      {
        ++_nl_msg_cat_cntr;
  
        if (old_domain != new_domain && old_domain != _nl_default_default_domain)
  	free (old_domain);
      }
  
    __libc_rwlock_unlock (_nl_state_lock);
  
    return new_domain;
  }
  
  #ifdef _LIBC
  /* Alias for function name in GNU C Library.  */
  weak_alias (__textdomain, textdomain);
  #endif
  