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: #ifndef nsISO2022KRToUnicode_h__
michael@0: #define nsISO2022KRToUnicode_h__
michael@0: #include "nsUCSupport.h"
michael@0: #include "mozilla/Telemetry.h"
michael@0: 
michael@0: class nsISO2022KRToUnicode : public nsBasicDecoderSupport
michael@0: {
michael@0: public:
michael@0:   nsISO2022KRToUnicode()
michael@0:   { 
michael@0:     mState = mState_Init;
michael@0:     mLastLegalState = mState_ASCII;
michael@0:     mData = 0;
michael@0:     mEUCKRDecoder = nullptr;
michael@0:     mRunLength = 0;
michael@0:     mozilla::Telemetry::Accumulate(
michael@0:       mozilla::Telemetry::DECODER_INSTANTIATED_ISO2022KR, true);
michael@0:   }
michael@0: 
michael@0:   virtual ~nsISO2022KRToUnicode()
michael@0:   {
michael@0:     NS_IF_RELEASE(mEUCKRDecoder);
michael@0:   }
michael@0: 
michael@0:   NS_IMETHOD Convert(const char * aSrc, int32_t * aSrcLength,
michael@0:      char16_t * aDest, int32_t * aDestLength) ;
michael@0:   
michael@0:   NS_IMETHOD GetMaxLength(const char * aSrc, int32_t aSrcLength,
michael@0:      int32_t * aDestLength) 
michael@0:   {
michael@0:     *aDestLength = aSrcLength;
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   NS_IMETHOD Reset()
michael@0:   {
michael@0:     mState = mState_Init;
michael@0:     mLastLegalState = mState_ASCII;
michael@0:     mRunLength = 0;
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0: private:
michael@0:   enum {
michael@0:     mState_Init,
michael@0:     mState_ASCII,
michael@0:     mState_ESC,
michael@0:     mState_ESC_24,
michael@0:     mState_ESC_24_29,
michael@0:     mState_KSX1001_1992,
michael@0:     mState_KSX1001_1992_2ndbyte,
michael@0:     mState_ERROR
michael@0:   } mState, mLastLegalState;
michael@0: 
michael@0:   uint8_t mData;
michael@0: 
michael@0:   // Length of non-ASCII run
michael@0:   uint32_t mRunLength;
michael@0: 
michael@0:   nsIUnicodeDecoder *mEUCKRDecoder;
michael@0: };
michael@0: #endif // nsISO2022KRToUnicode_h__