michael@0: /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0:  /**
michael@0:  * A character set converter from Unicode to GBK.
michael@0:  * 
michael@0:  *
michael@0:  * @created         08/Sept/1999
michael@0:  * @author  Yueheng Xu, Yueheng.Xu@intel.com
michael@0:  */
michael@0: 
michael@0: #ifndef nsUnicodeToGBK_h___
michael@0: #define nsUnicodeToGBK_h___
michael@0: 
michael@0: #include "nsUCSupport.h"
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsIUnicodeEncoder.h"
michael@0: #include "nsGBKConvUtil.h"
michael@0: //----------------------------------------------------------------------
michael@0: // Class nsUnicodeToGBK [declaration]
michael@0: 
michael@0: class nsUnicodeToGBK: public nsEncoderSupport
michael@0: {
michael@0: public:
michael@0: 
michael@0:   /**
michael@0:    * Class constructor.
michael@0:    */
michael@0:   nsUnicodeToGBK(uint32_t aMaxLengthFactor = 2);
michael@0:   virtual ~nsUnicodeToGBK() {}
michael@0: 
michael@0: protected:
michael@0: 
michael@0:   //--------------------------------------------------------------------
michael@0:   // Subclassing of nsEncoderSupport class [declaration]
michael@0:   NS_IMETHOD ConvertNoBuff(const char16_t * aSrc, 
michael@0:                             int32_t * aSrcLength, 
michael@0:                             char * aDest, 
michael@0:                             int32_t * aDestLength);
michael@0: 
michael@0:   NS_IMETHOD ConvertNoBuffNoErr(const char16_t * aSrc, int32_t * aSrcLength, 
michael@0:                                 char * aDest, int32_t * aDestLength)
michael@0:   {
michael@0:     return NS_OK;
michael@0:   }  // just make it not abstract;
michael@0: 
michael@0:   virtual void CreateExtensionEncoder();
michael@0:   virtual void Create4BytesEncoder();
michael@0: 
michael@0:   nsCOMPtr<nsIUnicodeEncoder> mExtensionEncoder;
michael@0:   nsCOMPtr<nsIUnicodeEncoder> m4BytesEncoder;
michael@0: protected:
michael@0:   char16_t mSurrogateHigh;
michael@0:   nsGBKConvUtil mUtil;
michael@0:   bool TryExtensionEncoder(char16_t aChar, char* aDest, int32_t* aOutLen);
michael@0:   bool Try4BytesEncoder(char16_t aChar, char* aDest, int32_t* aOutLen);
michael@0:   virtual bool EncodeSurrogate(char16_t aSurrogateHigh, char16_t aSurrogateLow, char* aDest);
michael@0: };
michael@0: 
michael@0: class nsUnicodeToGB18030: public nsUnicodeToGBK
michael@0: {
michael@0: public:
michael@0:   nsUnicodeToGB18030() : nsUnicodeToGBK(4) {}
michael@0:   virtual ~nsUnicodeToGB18030() {}
michael@0: protected:
michael@0:   virtual void CreateExtensionEncoder();
michael@0:   virtual void Create4BytesEncoder();
michael@0:   virtual bool EncodeSurrogate(char16_t aSurrogateHigh, char16_t aSurrogateLow, char* aDest);
michael@0: };
michael@0: 
michael@0: #endif /* nsUnicodeToGBK_h___ */
michael@0: