/* GDK - The GIMP Drawing Kit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * GDK over curses, copyright (c) 1998 Pavel Machek <pavel@ucw.cz>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#include "gdk.h"
#include "gdkprivate.h"
#include "gdki18n.h"
#include "gdkx.h"

#if HAVE_CONFIG_H
#  include <config.h>
#  if STDC_HEADERS
#    include <string.h>
#  endif
#endif

/*
 *--------------------------------------------------------------
 * gdk_set_locale
 *
 * Arguments:
 *
 * Results:
 *
 * Side effects:
 *
 *--------------------------------------------------------------
 */

gchar*
gdk_set_locale (void)
{
#if 0
  wchar_t result;
  gchar *current_locale;

  gdk_use_mb = FALSE;

  if (!setlocale (LC_ALL,""))
    g_message ("locale not supported by C library");
  
  current_locale = setlocale (LC_ALL, NULL);

  if ((strcmp (current_locale, "C")) && (strcmp (current_locale, "POSIX")))
    {
      gdk_use_mb = TRUE;

      /* Detect GNU libc, where mb == UTF8. Not useful unless it's
       * really a UTF8 locale. The below still probably will
       * screw up on Greek, Cyrillic, etc, encoded as UTF8.
       */
      
      if ((MB_CUR_MAX == 2) &&
	  (mbstowcs (&result, "\xdd\xa5", 1) > 0) &&
	  result == 0x765)
	{
	  if ((strlen (current_locale) < 4) ||
	      g_strcasecmp (current_locale + strlen(current_locale) - 4, "utf8"))
	    gdk_use_mb = FALSE;
	}
    }

  GDK_NOTE (XIM,
	    g_message ("%s multi-byte string functions.", 
		       gdk_use_mb ? "Using" : "Not using"));
  
  return current_locale;
#endif
  return NULL;
}


void 
gdk_im_begin (GdkIC *ic, GdkWindow* window)
{
}

void 
gdk_im_end (void)
{
}

GdkIMStyle
gdk_im_decide_style (GdkIMStyle supported_style)
{
  return GDK_IM_PREEDIT_NONE | GDK_IM_STATUS_NONE;
}

GdkIMStyle
gdk_im_set_best_style (GdkIMStyle style)
{
  return GDK_IM_PREEDIT_NONE | GDK_IM_STATUS_NONE;
}

gint 
gdk_im_ready (void)
{
  return FALSE;
}

GdkIC * 
gdk_ic_new (GdkICAttr *attr, GdkICAttributesType mask)
{
  return NULL;
}

void 
gdk_ic_destroy (GdkIC *ic)
{
}

GdkIMStyle
gdk_ic_get_style (GdkIC *ic)
{
  return GDK_IM_PREEDIT_NONE | GDK_IM_STATUS_NONE;
}

/*
 * for keeping binary compatibility if member of ic attributes is added.
 */
GdkICAttr *
gdk_ic_attr_new (void)
{
  return g_new0 (GdkICAttr, 1);
}

void
gdk_ic_attr_destroy (GdkICAttr *attr)
{
  g_return_if_fail (attr != NULL);

  g_free (attr);
}

void 
gdk_ic_set_values (GdkIC *ic, ...)
{
}

void 
gdk_ic_get_values (GdkIC *ic, ...)
{
}

GdkICAttributesType 
gdk_ic_set_attr (GdkIC *ic, GdkICAttr *attr, GdkICAttributesType mask)
{
  return 0;
}

GdkICAttributesType 
gdk_ic_get_attr (GdkIC *ic, GdkICAttr *attr, GdkICAttributesType mask)
{
  return 0;
}

GdkEventMask 
gdk_ic_get_events (GdkIC *ic)
{
  return 0;
}


/*
 * gdk_wcstombs 
 *
 * Returns a multi-byte string converted from the specified array
 * of wide characters. The string is newly allocated. The array of
 * wide characters must be null-terminated. If the conversion is
 * failed, it returns NULL.
 */
gchar *
gdk_wcstombs (const GdkWChar *src)
{
  gchar *mbstr;

    {
      gint length = 0;
      gint i;

      while (src[length] != 0)
	length++;
      
      mbstr = g_new (gchar, length + 1);

      for (i=0; i<length+1; i++)
	mbstr[i] = src[i];
    }

  return mbstr;
}
  
/*
 * gdk_mbstowcs
 *
 * Converts the specified string into wide characters, and, returns the
 * number of wide characters written. The string 'src' must be
 * null-terminated. If the conversion is failed, it returns -1.
 */
gint
gdk_mbstowcs (GdkWChar *dest, const gchar *src, gint dest_max)
{
    {
      gint i;

      for (i=0; i<dest_max && src[i]; i++)
	dest[i] = src[i];

      return i;
    }
}