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 nsISO2022CNToUnicode_h__
michael@0: #define nsISO2022CNToUnicode_h__
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsUCSupport.h"
michael@0: #include "mozilla/Telemetry.h"
michael@0: 
michael@0: #define MBYTE       0x8e
michael@0: #undef PMASK
michael@0: #define PMASK       0xa0
michael@0: 
michael@0: #define SI          0x0f 
michael@0: #define SO          0x0e
michael@0: #define ESC         0x1b
michael@0: #define SS2         0x4e
michael@0: #define SS3         0x4f
michael@0: 
michael@0: class nsISO2022CNToUnicode : public nsBasicDecoderSupport
michael@0: {
michael@0: public:
michael@0:   nsISO2022CNToUnicode() : 
michael@0:         mState(eState_ASCII), 
michael@0:         mPlaneID(0),
michael@0:         mRunLength(0)
michael@0:   {
michael@0:     mozilla::Telemetry::Accumulate(
michael@0:       mozilla::Telemetry::DECODER_INSTANTIATED_ISO2022CN, true);
michael@0:   }
michael@0: 
michael@0:   virtual ~nsISO2022CNToUnicode() {}
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 = eState_ASCII;
michael@0:     mPlaneID = 0;
michael@0:     mRunLength = 0;
michael@0: 
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0: private:
michael@0:   // State Machine ID
michael@0:   enum {
michael@0:     eState_ASCII,
michael@0:     eState_ESC,                           // ESC
michael@0:     eState_ESC_24,                        // ESC $
michael@0: 
michael@0:     eState_ESC_24_29,                     // ESC $ )
michael@0:     eState_ESC_24_29_A,                   // ESC $ ) A
michael@0:     eState_GB2312_1980,                   // ESC $ ) A SO
michael@0:     eState_GB2312_1980_2ndbyte,           // ESC $ ) A SO
michael@0:     eState_ESC_24_29_A_SO_SI,             // ESC $ ) A SO SI
michael@0:     eState_ESC_24_29_G,                   // ESC $ ) G or H
michael@0:     eState_CNS11643_1,                    // ESC $ ) G SO
michael@0:     eState_CNS11643_1_2ndbyte,            // ESC $ ) G SO
michael@0:     eState_ESC_24_29_G_SO_SI,             // ESC $ ) G SO SI
michael@0: 
michael@0:     eState_ESC_24_2A,                     // ESC $ *
michael@0:     eState_ESC_24_2A_H,                   // ESC $ * H
michael@0:     eState_ESC_24_2A_H_ESC,               // ESC $ * H ESC
michael@0:     eState_CNS11643_2,                    // ESC $ * H ESC SS2
michael@0:     eState_CNS11643_2_2ndbyte,            // ESC $ * H ESC SS2
michael@0:     eState_ESC_24_2A_H_ESC_SS2_SI,        // ESC $ * H ESC SS2 SI
michael@0:     eState_ESC_24_2A_H_ESC_SS2_SI_ESC,    // ESC $ * H ESC SS2 SI ESC
michael@0: 
michael@0:     eState_ESC_24_2B,                     // ESC $ +
michael@0:     eState_ESC_24_2B_I,                   // ESC $ + I
michael@0:     eState_ESC_24_2B_I_ESC,               // ESC $ + I ESC
michael@0:     eState_CNS11643_3,                    // ESC $ + I ESC SS3
michael@0:     eState_CNS11643_3_2ndbyte,            // ESC $ + I ESC SS3
michael@0:     eState_ESC_24_2B_I_ESC_SS3_SI,        // ESC $ + I ESC SI
michael@0:     eState_ESC_24_2B_I_ESC_SS3_SI_ESC,    // ESC $ + I ESC SI ESC
michael@0:     eState_ERROR
michael@0:   } mState;
michael@0: 
michael@0:   char mData;
michael@0: 
michael@0:   // Plane number for CNS11643 code
michael@0:   int mPlaneID;
michael@0: 
michael@0:   // Length of non-ASCII run
michael@0:   uint32_t mRunLength;
michael@0: 
michael@0:   // Decoder handler
michael@0:   nsCOMPtr<nsIUnicodeDecoder> mGB2312_Decoder;
michael@0:   nsCOMPtr<nsIUnicodeDecoder> mEUCTW_Decoder;
michael@0: 
michael@0:   NS_IMETHOD GB2312_To_Unicode(unsigned char *aSrc, int32_t aSrcLength,
michael@0:      char16_t * aDest, int32_t * aDestLength) ;
michael@0: 
michael@0:   NS_IMETHOD EUCTW_To_Unicode(unsigned char *aSrc, int32_t aSrcLength,
michael@0:      char16_t * aDest, int32_t * aDestLength) ;
michael@0: };
michael@0: #endif // nsISO2022CNToUnicode_h__