gecko-dev/intl/uconv/ucvcn/nsUnicodeToGBK.h

107 строки
3.7 KiB
C++

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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 mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 ***** */
/**
* A character set converter from Unicode to GBK.
*
*
* @created 08/Sept/1999
* @author Yueheng Xu, Yueheng.Xu@intel.com
*/
#ifndef nsUnicodeToGBK_h___
#define nsUnicodeToGBK_h___
#include "nsUCSupport.h"
#include "nsCOMPtr.h"
#include "nsIUnicodeEncoder.h"
#include "gbku.h"
//----------------------------------------------------------------------
// Class nsUnicodeToGBK [declaration]
class nsUnicodeToGBK: public nsEncoderSupport
{
public:
/**
* Class constructor.
*/
nsUnicodeToGBK(PRUint32 aMaxLengthFactor = 2);
virtual ~nsUnicodeToGBK() {}
protected:
//--------------------------------------------------------------------
// Subclassing of nsEncoderSupport class [declaration]
NS_IMETHOD ConvertNoBuff(const PRUnichar * aSrc,
PRInt32 * aSrcLength,
char * aDest,
PRInt32 * aDestLength);
NS_IMETHOD ConvertNoBuffNoErr(const PRUnichar * aSrc, PRInt32 * aSrcLength,
char * aDest, PRInt32 * aDestLength)
{
return NS_OK;
} // just make it not abstract;
virtual void CreateExtensionEncoder();
virtual void Create4BytesEncoder();
nsCOMPtr<nsIUnicodeEncoder> mExtensionEncoder;
nsCOMPtr<nsIUnicodeEncoder> m4BytesEncoder;
protected:
PRUnichar mSurrogateHigh;
nsGBKConvUtil mUtil;
PRBool TryExtensionEncoder(PRUnichar aChar, char* aDest, PRInt32* aOutLen);
PRBool Try4BytesEncoder(PRUnichar aChar, char* aDest, PRInt32* aOutLen);
virtual PRBool EncodeSurrogate(PRUnichar aSurrogateHigh, PRUnichar aSurrogateLow, char* aDest);
};
class nsUnicodeToGB18030: public nsUnicodeToGBK
{
public:
nsUnicodeToGB18030() : nsUnicodeToGBK(4) {}
virtual ~nsUnicodeToGB18030() {}
protected:
virtual void CreateExtensionEncoder();
virtual void Create4BytesEncoder();
virtual PRBool EncodeSurrogate(PRUnichar aSurrogateHigh, PRUnichar aSurrogateLow, char* aDest);
};
#endif /* nsUnicodeToGBK_h___ */