426 lines
11 KiB
C++
426 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsUCvJaSupport_h___
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#define nsUCvJaSupport_h___
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#include "nsCOMPtr.h"
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#include "nsIUnicodeEncoder.h"
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#include "nsIUnicodeDecoder.h"
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#include "uconvutil.h"
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#include "mozilla/Mutex.h"
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#define ONE_BYTE_TABLE_SIZE 256
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inline bool WillOverrun(char16_t* aDest, char16_t* aDestEnd, uint32_t aLength)
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{
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NS_ASSERTION(aDest <= aDestEnd, "Pointer overrun even before check");
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return (uint32_t(aDestEnd - aDest) < aLength);
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}
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#define CHECK_OVERRUN(dest, destEnd, length) (WillOverrun(dest, destEnd, length))
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#ifdef DEBUG
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// {7AFC9F0A-CFE1-44ea-A755-E3B86AB1226E}
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#define NS_IBASICDECODER_IID \
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{ 0x7afc9f0a, 0xcfe1, 0x44ea, { 0xa7, 0x55, 0xe3, 0xb8, 0x6a, 0xb1, 0x22, 0x6e } }
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// {65968A7B-6467-4c4a-B50A-3E0C97A32F07}
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#define NS_IBASICENCODER_IID \
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{ 0x65968a7b, 0x6467, 0x4c4a, { 0xb5, 0xa, 0x3e, 0xc, 0x97, 0xa3, 0x2f, 0x7 } }
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class nsIBasicDecoder : public nsISupports {
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_IBASICDECODER_IID)
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsIBasicDecoder, NS_IBASICDECODER_IID)
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class nsIBasicEncoder : public nsISupports {
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_IBASICENCODER_IID)
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsIBasicEncoder, NS_IBASICENCODER_IID)
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#endif
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//----------------------------------------------------------------------
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// Class nsBasicDecoderSupport [declaration]
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/**
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* Support class for the Unicode decoders.
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*
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* The class source files for this class are in /ucvlatin/nsUCvJaSupport.
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* However, because these objects requires non-xpcom subclassing, local copies
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* will be made into the other directories using them. Just don't forget to
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* keep in sync with the master copy!
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*
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* This class implements:
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* - nsISupports
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* - nsIUnicodeDecoder
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*
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* @created 19/Apr/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsBasicDecoderSupport : public nsIUnicodeDecoder
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#ifdef DEBUG
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,public nsIBasicDecoder
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#endif
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{
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NS_DECL_THREADSAFE_ISUPPORTS
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public:
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/**
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* Class constructor.
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*/
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nsBasicDecoderSupport();
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//--------------------------------------------------------------------
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// Interface nsIUnicodeDecoder [declaration]
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virtual void SetInputErrorBehavior(int32_t aBehavior) override;
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virtual char16_t GetCharacterForUnMapped() override;
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protected:
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int32_t mErrBehavior;
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/**
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* Class destructor.
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*/
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virtual ~nsBasicDecoderSupport();
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};
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//----------------------------------------------------------------------
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// Class nsBufferDecoderSupport [declaration]
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/**
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* Support class for the Unicode decoders.
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*
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* This class implements:
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* - the buffer management
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*
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* @created 15/Mar/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsBufferDecoderSupport : public nsBasicDecoderSupport
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{
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protected:
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/**
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* Internal buffer for partial conversions.
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*/
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char * mBuffer;
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int32_t mBufferCapacity;
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int32_t mBufferLength;
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uint32_t mMaxLengthFactor;
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/**
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* Convert method but *without* the buffer management stuff.
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*/
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NS_IMETHOD ConvertNoBuff(const char * aSrc, int32_t * aSrcLength,
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char16_t * aDest, int32_t * aDestLength) = 0;
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void FillBuffer(const char ** aSrc, int32_t aSrcLength);
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public:
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/**
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* Class constructor.
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*/
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explicit nsBufferDecoderSupport(uint32_t aMaxLengthFactor);
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/**
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* Class destructor.
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*/
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virtual ~nsBufferDecoderSupport();
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//--------------------------------------------------------------------
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// Interface nsIUnicodeDecoder [declaration]
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NS_IMETHOD Convert(const char * aSrc, int32_t * aSrcLength,
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char16_t * aDest, int32_t * aDestLength);
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NS_IMETHOD Reset();
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NS_IMETHOD GetMaxLength(const char *aSrc,
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int32_t aSrcLength,
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int32_t* aDestLength);
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};
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//----------------------------------------------------------------------
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// Class nsMultiTableDecoderSupport [declaration]
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/**
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* Support class for a multi-table-driven Unicode decoder.
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*
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* @created 24/Mar/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsMultiTableDecoderSupport : public nsBufferDecoderSupport
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{
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public:
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/**
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* Class constructor.
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*/
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nsMultiTableDecoderSupport(int32_t aTableCount, const uRange * aRangeArray,
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uScanClassID * aScanClassArray,
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uMappingTable ** aMappingTable,
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uint32_t aMaxLengthFactor);
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/**
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* Class destructor.
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*/
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virtual ~nsMultiTableDecoderSupport();
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protected:
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int32_t mTableCount;
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const uRange * mRangeArray;
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uScanClassID * mScanClassArray;
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uMappingTable ** mMappingTable;
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//--------------------------------------------------------------------
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// Subclassing of nsBufferDecoderSupport class [declaration]
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NS_IMETHOD ConvertNoBuff(const char * aSrc, int32_t * aSrcLength,
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char16_t * aDest, int32_t * aDestLength);
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};
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//----------------------------------------------------------------------
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// Class nsBufferDecoderSupport [declaration]
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/**
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* Support class for a single-byte Unicode decoder.
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*
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* @created 19/Apr/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsOneByteDecoderSupport : public nsBasicDecoderSupport
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{
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public:
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/**
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* Class constructor.
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*/
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explicit nsOneByteDecoderSupport(uMappingTable * aMappingTable);
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/**
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* Class destructor.
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*/
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virtual ~nsOneByteDecoderSupport();
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protected:
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uMappingTable * mMappingTable;
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char16_t mFastTable[ONE_BYTE_TABLE_SIZE];
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bool mFastTableCreated;
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mozilla::Mutex mFastTableMutex;
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//--------------------------------------------------------------------
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// Subclassing of nsBasicDecoderSupport class [declaration]
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NS_IMETHOD Convert(const char * aSrc, int32_t * aSrcLength,
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char16_t * aDest, int32_t * aDestLength);
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NS_IMETHOD GetMaxLength(const char * aSrc, int32_t aSrcLength,
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int32_t * aDestLength);
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NS_IMETHOD Reset();
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};
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//----------------------------------------------------------------------
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// Class nsBasicEncoder [declaration]
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class nsBasicEncoder : public nsIUnicodeEncoder
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#ifdef DEBUG
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,public nsIBasicEncoder
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#endif
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{
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NS_DECL_ISUPPORTS
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public:
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/**
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* Class constructor.
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*/
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nsBasicEncoder();
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protected:
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/**
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* Class destructor.
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*/
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virtual ~nsBasicEncoder();
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};
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//----------------------------------------------------------------------
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// Class nsEncoderSupport [declaration]
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/**
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* Support class for the Unicode encoders.
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*
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* This class implements:
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* - nsISupports
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* - the buffer management
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* - error handling procedure(s)
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*
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* @created 17/Feb/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsEncoderSupport : public nsBasicEncoder
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{
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protected:
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/**
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* Internal buffer for partial conversions.
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*/
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char * mBuffer;
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int32_t mBufferCapacity;
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char * mBufferStart;
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char * mBufferEnd;
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/**
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* Error handling stuff
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*/
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int32_t mErrBehavior;
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nsCOMPtr<nsIUnicharEncoder> mErrEncoder;
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char16_t mErrChar;
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uint32_t mMaxLengthFactor;
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/**
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* Convert method but *without* the buffer management stuff and *with*
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* error handling stuff.
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*/
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NS_IMETHOD ConvertNoBuff(const char16_t * aSrc, int32_t * aSrcLength,
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char * aDest, int32_t * aDestLength);
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/**
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* Convert method but *without* the buffer management stuff and *without*
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* error handling stuff.
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*/
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NS_IMETHOD ConvertNoBuffNoErr(const char16_t * aSrc, int32_t * aSrcLength,
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char * aDest, int32_t * aDestLength) = 0;
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/**
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* Finish method but *without* the buffer management stuff.
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*/
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NS_IMETHOD FinishNoBuff(char * aDest, int32_t * aDestLength);
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/**
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* Copy as much as possible from the internal buffer to the destination.
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*/
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nsresult FlushBuffer(char ** aDest, const char * aDestEnd);
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public:
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/**
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* Class constructor.
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*/
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explicit nsEncoderSupport(uint32_t aMaxLengthFactor);
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/**
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* Class destructor.
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*/
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virtual ~nsEncoderSupport();
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//--------------------------------------------------------------------
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// Interface nsIUnicodeEncoder [declaration]
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NS_IMETHOD Convert(const char16_t * aSrc, int32_t * aSrcLength,
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char * aDest, int32_t * aDestLength);
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NS_IMETHOD Finish(char * aDest, int32_t * aDestLength);
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NS_IMETHOD Reset();
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NS_IMETHOD SetOutputErrorBehavior(int32_t aBehavior,
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nsIUnicharEncoder * aEncoder, char16_t aChar);
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NS_IMETHOD GetMaxLength(const char16_t * aSrc,
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int32_t aSrcLength,
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int32_t * aDestLength);
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};
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//----------------------------------------------------------------------
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// Class nsTableEncoderSupport [declaration]
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/**
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* Support class for a single-table-driven Unicode encoder.
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*
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* @created 17/Feb/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsTableEncoderSupport : public nsEncoderSupport
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{
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public:
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/**
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* Class constructors.
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*/
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nsTableEncoderSupport(uScanClassID aScanClass,
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uShiftOutTable * aShiftOutTable,
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uMappingTable * aMappingTable,
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uint32_t aMaxLengthFactor);
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nsTableEncoderSupport(uScanClassID aScanClass,
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uMappingTable * aMappingTable,
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uint32_t aMaxLengthFactor);
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/**
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* Class destructor.
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*/
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virtual ~nsTableEncoderSupport();
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protected:
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uScanClassID mScanClass;
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uShiftOutTable * mShiftOutTable;
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uMappingTable * mMappingTable;
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//--------------------------------------------------------------------
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// Subclassing of nsEncoderSupport class [declaration]
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NS_IMETHOD ConvertNoBuffNoErr(const char16_t * aSrc, int32_t * aSrcLength,
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char * aDest, int32_t * aDestLength);
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};
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//----------------------------------------------------------------------
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// Class nsMultiTableEncoderSupport [declaration]
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/**
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* Support class for a multi-table-driven Unicode encoder.
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*
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* @created 11/Mar/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsMultiTableEncoderSupport : public nsEncoderSupport
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{
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public:
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/**
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* Class constructor.
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*/
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nsMultiTableEncoderSupport(int32_t aTableCount,
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uScanClassID * aScanClassArray,
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uShiftOutTable ** aShiftOutTable,
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uMappingTable ** aMappingTable,
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uint32_t aMaxLengthFactor);
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/**
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* Class destructor.
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*/
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virtual ~nsMultiTableEncoderSupport();
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protected:
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int32_t mTableCount;
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uScanClassID * mScanClassArray;
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uShiftOutTable ** mShiftOutTable;
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uMappingTable ** mMappingTable;
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//--------------------------------------------------------------------
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// Subclassing of nsEncoderSupport class [declaration]
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NS_IMETHOD ConvertNoBuffNoErr(const char16_t * aSrc, int32_t * aSrcLength,
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char * aDest, int32_t * aDestLength);
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};
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#endif /* nsUCvJaSupport_h___ */
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