/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is an API for accessing OS/2 Unicode support.
 *
 * The Initial Developer of the Original Code is
 * IBM Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef _nsos2uni_h
#define _nsos2uni_h

#define INCL_WIN
#include <os2.h>
#include <uconv.h>
#include "nsAutoBuffer.h"
#include "nsICharsetConverterManager.h"
#include "gfxCore.h"


enum ConverterRequest {
  eConv_Encoder,
  eConv_Decoder
};

class NS_GFX OS2Uni {
public:
  static nsISupports* GetUconvObject(int CodePage, ConverterRequest aReq);
  static void FreeUconvObjects();
private:
  static nsICharsetConverterManager* gCharsetManager;
};


#define CHAR_BUFFER_SIZE 1024
typedef nsAutoBuffer<char, CHAR_BUFFER_SIZE> nsAutoCharBuffer;
typedef nsAutoBuffer<PRUnichar, CHAR_BUFFER_SIZE> nsAutoChar16Buffer;

NS_GFX_(nsresult) WideCharToMultiByte(int aCodePage, const PRUnichar* aSrc,
                                      PRInt32 aSrcLength, nsAutoCharBuffer& aResult,
                                      PRInt32& aResultLength);
NS_GFX_(nsresult) MultiByteToWideChar(int aCodePage, const char* aSrc,
                                      PRInt32 aSrcLength, nsAutoChar16Buffer& aResult,
                                      PRInt32& aResultLength);
         
#endif
