/* GDK - The GIMP Drawing Kit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * * This 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 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser 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. *//* * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS * file for a list of people on the GTK+ Team.  See the ChangeLog * files for a list of changes.  These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/.  */#include <config.h>#include <locale.h>#include <stdlib.h>#include <string.h>#include "gdkx.h"#include "gdk.h"		/* For gdk_flush() */#include "gdkx.h"#include "gdkpixmap.h"#include "gdkinternals.h"#include "gdkdisplay-x11.h"#include "gdkalias.h"/* If this variable is FALSE, it indicates that we should * avoid trying to use multibyte conversion functions and * assume everything is 1-byte per character */static gboolean gdk_use_mb;void_gdk_x11_initialize_locale (void){  wchar_t result;  gchar *current_locale;  static char *last_locale = NULL;  gdk_use_mb = FALSE;  current_locale = setlocale (LC_ALL, NULL);  if (last_locale && strcmp (last_locale, current_locale) == 0)    return;  g_free (last_locale);  last_locale = g_strdup (current_locale);  if (!XSupportsLocale ())    g_warning ("locale not supported by Xlib");    if (!XSetLocaleModifiers (""))    g_warning ("cannot set locale modifiers");  if ((strcmp (current_locale, "C")) && (strcmp (current_locale, "POSIX")))    {      gdk_use_mb = TRUE;#ifndef X_LOCALE      /* Detect ancient 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_ascii_strcasecmp (current_locale + strlen(current_locale) - 4,				  "utf8"))	    gdk_use_mb = FALSE;	}#endif /* X_LOCALE */    }  GDK_NOTE (XIM,	    g_message ("%s multi-byte string functions.", 		       gdk_use_mb ? "Using" : "Not using"));    return;}gchar*gdk_set_locale (void){  if (!setlocale (LC_ALL,""))    g_warning ("locale not supported by C library");  _gdk_x11_initialize_locale ();    return setlocale (LC_ALL, NULL);}static GdkDisplay *find_a_display (void){  GdkDisplay *display = gdk_display_get_default ();  if (!display)    display = _gdk_displays->data;  return display;}/** * gdk_wcstombs: * @src: a wide character string. *  * Converts a wide character string to a multi-byte string. * (The function name comes from an acronym of 'Wide Character String TO * Multi-Byte String'). *  * Return value: the multi-byte string corresponding to @src, or %NULL if the * conversion failed. The returned string should be freed with g_free() when no * longer needed. **/gchar *gdk_wcstombs (const GdkWChar *src){  gchar *mbstr;  if (gdk_use_mb)    {      GdkDisplay *display = find_a_display ();      Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);      XTextProperty tpr;      if (sizeof(wchar_t) != sizeof(GdkWChar))	{	  gint i;	  wchar_t *src_alt;	  for (i=0; src[i]; i++);	  src_alt = g_new (wchar_t, i+1);	  for (; i>=0; i--)	    src_alt[i] = src[i];	  if (XwcTextListToTextProperty (xdisplay, &src_alt, 1, XTextStyle, &tpr)	      != Success)	    {	      g_free (src_alt);	      return NULL;	    }	  g_free (src_alt);	}      else	{	  wchar_t *tmp;	  	  if (XwcTextListToTextProperty (xdisplay, &tmp, 1,					 XTextStyle, &tpr) != Success)	    {	      return NULL;	    }	  	  src = (GdkWChar *)tmp;	}      /*       * We must copy the string into an area allocated by glib, because       * the string 'tpr.value' must be freed by XFree().       */      mbstr = g_strdup(tpr.value);      XFree (tpr.value);    }  else    {      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: * @dest: the space to place the converted wide character string into. * @src: the multi-byte string to convert, which must be nul-terminated. * @dest_max: the maximum number of wide characters to place in @dest. *  * Converts a multi-byte string to a wide character string. * (The function name comes from an acronym of 'Multi-Byte String TO Wide * Character String'). *  * Return value: the number of wide characters written into @dest, or -1 if  *   the conversion failed. **/  gintgdk_mbstowcs (GdkWChar *dest, const gchar *src, gint dest_max){  if (gdk_use_mb)    {      GdkDisplay *display = find_a_display ();      Display *xdisplay = GDK_DISPLAY_XDISPLAY (display);      XTextProperty tpr;      wchar_t **wstrs, *wstr_src;      gint num_wstrs;      gint len_cpy;      if (XmbTextListToTextProperty (xdisplay, (char **)&src, 1, XTextStyle,				     &tpr)	  != Success)	{	  /* NoMem or LocaleNotSupp */	  return -1;	}      if (XwcTextPropertyToTextList (xdisplay, &tpr, &wstrs, &num_wstrs)	  != Success)	{	  /* InvalidChar */	  XFree(tpr.value);	  return -1;	}      XFree(tpr.value);      if (num_wstrs == 0)	return 0;      wstr_src = wstrs[0];      for (len_cpy=0; len_cpy<dest_max && wstr_src[len_cpy]; len_cpy++)	dest[len_cpy] = wstr_src[len_cpy];      XwcFreeStringList (wstrs);      return len_cpy;    }  else    {      gint i;      for (i=0; i<dest_max && src[i]; i++)	dest[i] = src[i];      return i;    }}#define __GDK_IM_X11_C__#include "gdkaliasdef.c"