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/* Implementation of the bindtextdomain(3) function

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

   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>

#else

# ifdef HAVE_MALLOC_H

#  include <malloc.h>

# else

void free ();

# endif

#endif

#if 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

#include "gettext.h"

#include "gettextP.h"

/* @@ end of prolog @@ */

/* Contains the default location of the message catalogs.  */

extern const char _nl_default_dirname[];

/* List with bindings of specific domains.  */

extern struct binding *_nl_domain_bindings;

/* 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 BINDTEXTDOMAIN __bindtextdomain

# ifndef strdup

#  define strdup(str) __strdup (str)

# endif

#else

# define BINDTEXTDOMAIN bindtextdomain__

#endif

/* Specify that the DOMAINNAME message catalog will be found

   in DIRNAME rather than in the system locale data base.  */

char *

BINDTEXTDOMAIN (domainname, dirname)

     const char *domainname;

     const char *dirname;

{

  struct binding *binding;

  /* Some sanity checks.  */

  if (domainname == NULL || domainname[0] == '\0')

    return NULL;

  for (binding = _nl_domain_bindings; binding != NULL; binding = binding->next)

    {

      int compare = strcmp (domainname, binding->domainname);

      if (compare == 0)

        /* We found it!  */

        break;

      if (compare < 0)

        {

          /* It is not in the list.  */

          binding = NULL;

          break;

        }

    }

  if (dirname == NULL)

    /* The current binding has be to returned.  */

    return binding == NULL ? (char *) _nl_default_dirname : binding->dirname;

  if (binding != NULL)

    {

      /* The domain is already bound.  If the new value and the old

         one are equal we simply do nothing.  Otherwise replace the

         old binding.  */

      if (strcmp (dirname, binding->dirname) != 0)

        {

          char *new_dirname;

          if (strcmp (dirname, _nl_default_dirname) == 0)

            new_dirname = (char *) _nl_default_dirname;

          else

            {

#if defined _LIBC || defined HAVE_STRDUP

              new_dirname = strdup (dirname);

              if (new_dirname == NULL)

                return NULL;

#else

              size_t len = strlen (dirname) + 1;

              new_dirname = (char *) malloc (len);

              if (new_dirname == NULL)

                return NULL;

              memcpy (new_dirname, dirname, len);

#endif

            }

          if (binding->dirname != _nl_default_dirname)

            free (binding->dirname);

          binding->dirname = new_dirname;

        }

    }

  else

    {

      /* We have to create a new binding.  */

#if !defined _LIBC && !defined HAVE_STRDUP

      size_t len;

#endif

      struct binding *new_binding =

        (struct binding *) malloc (sizeof (*new_binding));

      if (new_binding == NULL)

        return NULL;

#if defined _LIBC || defined HAVE_STRDUP

      new_binding->domainname = strdup (domainname);

      if (new_binding->domainname == NULL)

        return NULL;

#else

      len = strlen (domainname) + 1;

      new_binding->domainname = (char *) malloc (len);

      if (new_binding->domainname == NULL)

        return NULL;

      memcpy (new_binding->domainname, domainname, len);

#endif

      if (strcmp (dirname, _nl_default_dirname) == 0)

        new_binding->dirname = (char *) _nl_default_dirname;

      else

        {

#if defined _LIBC || defined HAVE_STRDUP

          new_binding->dirname = strdup (dirname);

          if (new_binding->dirname == NULL)

            return NULL;

#else

          len = strlen (dirname) + 1;

          new_binding->dirname = (char *) malloc (len);

          if (new_binding->dirname == NULL)

            return NULL;

          memcpy (new_binding->dirname, dirname, len);

#endif

        }

      /* Now enqueue it.  */

      if (_nl_domain_bindings == NULL

          || strcmp (domainname, _nl_domain_bindings->domainname) < 0)

        {

          new_binding->next = _nl_domain_bindings;

          _nl_domain_bindings = new_binding;

        }

      else

        {

          binding = _nl_domain_bindings;

          while (binding->next != NULL

                 && strcmp (domainname, binding->next->domainname) > 0)

            binding = binding->next;

          new_binding->next = binding->next;

          binding->next = new_binding;

        }

      binding = new_binding;

    }

  return binding->dirname;

}

#ifdef _LIBC

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

weak_alias (__bindtextdomain, bindtextdomain);

#endif