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os/textandloc/charconvfw/charconvplugins/src/plugins/iso2022jp1.cpp
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution. 
     1 /*

     2 * Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 

    19 #include <e32std.h>

    20 #include <charconv.h>

    21 #include <convutils.h>

    22 #include "jisbase.h"

    23 #include "jisx0201.h"

    24 #include "jisx0208.h"

    25 #include "jisx0212.h"

    26 #include <ecom/implementationproxy.h>

    27 #include <charactersetconverter.h>

    28 

    29 _LIT8(KLit8EscapeSequenceForJisRoman, "\x1b\x28\x4a");

    30 _LIT8(KLit8EscapeSequenceForAscii, "\x1b\x28\x42");

    31 _LIT8(KLit8EscapeSequenceForJisX0208_1983, "\x1b\x24\x42");

    32 _LIT8(KLit8EscapeSequenceForJisX0212_1990, "\x1b\x24\x28\x44");

    33 _LIT8(KLit8Iso2022Jp1ReplacementForUnconvertibleUnicodeCharacters, "\x1b\x24\x42\x21\x29"); // fullwidth question mark

    34 

    35 

    36 class CISO2022JP1ConverterImpl : public CCharacterSetConverterPluginInterface

    37 	{

    38 

    39 public:

    40 	virtual const TDesC8& ReplacementForUnconvertibleUnicodeCharacters();

    41 

    42 	virtual TInt ConvertFromUnicode(

    43 		CCnvCharacterSetConverter::TEndianness aDefaultEndiannessOfForeignCharacters, 

    44 		const TDesC8& aReplacementForUnconvertibleUnicodeCharacters, 

    45 		TDes8& aForeign, 

    46 		const TDesC16& aUnicode, 

    47 		CCnvCharacterSetConverter::TArrayOfAscendingIndices& aIndicesOfUnconvertibleCharacters);

    48 

    49 	virtual TInt ConvertToUnicode(

    50 		CCnvCharacterSetConverter::TEndianness aDefaultEndiannessOfForeignCharacters, 

    51 		TDes16& aUnicode, 

    52 		const TDesC8& aForeign, 

    53 		TInt& aState, 

    54 		TInt& aNumberOfUnconvertibleCharacters, 

    55 		TInt& aIndexOfFirstByteOfFirstUnconvertibleCharacter);

    56 

    57 	virtual TBool IsInThisCharacterSetL(

    58 		TBool& aSetToTrue, 

    59 		TInt& aConfidenceLevel, 

    60 		const TDesC8& aSample);

    61 

    62 	static CISO2022JP1ConverterImpl* NewL();

    63 	virtual ~CISO2022JP1ConverterImpl();

    64 

    65 private:

    66 	CISO2022JP1ConverterImpl();

    67 

    68 	};

    69 

    70 

    71 const TDesC8& CISO2022JP1ConverterImpl::ReplacementForUnconvertibleUnicodeCharacters()

    72 	{

    73 	return KLit8Iso2022Jp1ReplacementForUnconvertibleUnicodeCharacters;

    74 	}

    75 

    76 LOCAL_C void ConvertFromJisRomanToJisInPlace(TInt aStartPositionInDescriptor, TDes8& aDescriptor, TInt& aNumberOfCharactersThatDroppedOut)

    77 	{

    78 	CnvUtilities::ConvertFromIntermediateBufferInPlace(aStartPositionInDescriptor, aDescriptor, aNumberOfCharactersThatDroppedOut, KLit8EscapeSequenceForJisRoman, 1);

    79 	}

    80 

    81 LOCAL_C void ConvertFromAsciiToJisInPlace(TInt aStartPositionInDescriptor, TDes8& aDescriptor, TInt& aNumberOfCharactersThatDroppedOut)

    82 	{

    83 	CnvUtilities::ConvertFromIntermediateBufferInPlace(aStartPositionInDescriptor, aDescriptor, aNumberOfCharactersThatDroppedOut, KLit8EscapeSequenceForAscii, 1);

    84 	}

    85 

    86 LOCAL_C void ConvertFromJisX0208ToJisInPlace(TInt aStartPositionInDescriptor, TDes8& aDescriptor, TInt& aNumberOfCharactersThatDroppedOut)

    87 	{

    88 	CnvUtilities::ConvertFromIntermediateBufferInPlace(aStartPositionInDescriptor, aDescriptor, aNumberOfCharactersThatDroppedOut, KLit8EscapeSequenceForJisX0208_1983, 2);

    89 	}

    90 

    91 LOCAL_C void ConvertFromJisX0212ToJisInPlace(TInt aStartPositionInDescriptor, TDes8& aDescriptor, TInt& aNumberOfCharactersThatDroppedOut)

    92 	{

    93 	CnvUtilities::ConvertFromIntermediateBufferInPlace(aStartPositionInDescriptor, aDescriptor, aNumberOfCharactersThatDroppedOut, KLit8EscapeSequenceForJisX0212_1990, 2);

    94 	}

    95 

    96 TInt CISO2022JP1ConverterImpl::ConvertFromUnicode(

    97 		CCnvCharacterSetConverter::TEndianness aDefaultEndiannessOfForeignCharacters, 

    98 		const TDesC8& aReplacementForUnconvertibleUnicodeCharacters, 

    99 		TDes8& aForeign, 

   100 		const TDesC16& aUnicode, 

   101 		CCnvCharacterSetConverter::TArrayOfAscendingIndices& aIndicesOfUnconvertibleCharacters)

   102 	{

   103 	TFixedArray<CnvUtilities::SCharacterSet, 4> characterSets;

   104 	characterSets[0].iConversionData=&CnvJisRoman::ConversionData();

   105 	characterSets[0].iConvertFromIntermediateBufferInPlace=ConvertFromJisRomanToJisInPlace;

   106 	characterSets[0].iEscapeSequence=&KLit8EscapeSequenceForJisRoman;

   107 	characterSets[1].iConversionData=&CCnvCharacterSetConverter::AsciiConversionData();

   108 	characterSets[1].iConvertFromIntermediateBufferInPlace=ConvertFromAsciiToJisInPlace;

   109 	characterSets[1].iEscapeSequence=&KLit8EscapeSequenceForAscii;

   110 	characterSets[2].iConversionData=&CnvJisX0208::ConversionData();

   111 	characterSets[2].iConvertFromIntermediateBufferInPlace=ConvertFromJisX0208ToJisInPlace;

   112 	characterSets[2].iEscapeSequence=&KLit8EscapeSequenceForJisX0208_1983;

   113 	characterSets[3].iConversionData=&CnvJisX0212::ConversionData();

   114 	characterSets[3].iConvertFromIntermediateBufferInPlace=ConvertFromJisX0212ToJisInPlace;

   115 	characterSets[3].iEscapeSequence=&KLit8EscapeSequenceForJisX0212_1990;

   116 	TUint notUsed;

   117 	TUint inputConversionFlags=CCnvCharacterSetConverter::EInputConversionFlagMustEndInDefaultCharacterSet;

   118 	return CnvUtilities::ConvertFromUnicode(aDefaultEndiannessOfForeignCharacters, aReplacementForUnconvertibleUnicodeCharacters, aForeign, aUnicode, aIndicesOfUnconvertibleCharacters, characterSets.Array(),notUsed,inputConversionFlags);

   119 	}

   120 

   121 TInt CISO2022JP1ConverterImpl::ConvertToUnicode(

   122 		CCnvCharacterSetConverter::TEndianness aDefaultEndiannessOfForeignCharacters, 

   123 		TDes16& aUnicode, 

   124 		const TDesC8& aForeign, 

   125 		TInt& aState, 

   126 		TInt& aNumberOfUnconvertibleCharacters, 

   127 		TInt& aIndexOfFirstByteOfFirstUnconvertibleCharacter)

   128 	{

   129 	return CnvJisBase::ConvertToUnicode(aDefaultEndiannessOfForeignCharacters, aUnicode, aForeign, aState, aNumberOfUnconvertibleCharacters, aIndexOfFirstByteOfFirstUnconvertibleCharacter);

   130 	}

   131 

   132 TBool CISO2022JP1ConverterImpl::IsInThisCharacterSetL(

   133 		TBool& aSetToTrue, 

   134 		TInt& aConfidenceLevel, 

   135 		const TDesC8& aSample)

   136 	{

   137 	aSetToTrue=ETrue;

   138 	CnvJisBase::IsCharacterJISBased(aConfidenceLevel, aSample);

   139 	return ETrue;

   140 	}

   141 

   142 CISO2022JP1ConverterImpl* CISO2022JP1ConverterImpl::NewL()

   143 	{

   144 	CISO2022JP1ConverterImpl* self = new(ELeave) CISO2022JP1ConverterImpl();

   145 	return self;

   146 	}

   147 

   148 CISO2022JP1ConverterImpl::~CISO2022JP1ConverterImpl()

   149 	{

   150 	}

   151 

   152 CISO2022JP1ConverterImpl::CISO2022JP1ConverterImpl()

   153 	{

   154 	}

   155 

   156 

   157 const TImplementationProxy ImplementationTable[] = 

   158 	{

   159 		IMPLEMENTATION_PROXY_ENTRY(0x100066A3,	CISO2022JP1ConverterImpl::NewL)

   160 	};

   161 

   162 EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)

   163 	{

   164 	aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);

   165 

   166 	return ImplementationTable;

   167 	}

   168
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