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/*
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* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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* J5 charconv character converter
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* converts from EUC_JP to unicode
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* based on code in EUCJP_PACKED
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*
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*/
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#include <e32std.h>
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#include <charconv.h>
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#include <ecom/implementationproxy.h>
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#include <convutils.h>
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#include "shiftjis.h"
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#include "jisbase.h"
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#include "jisx0201.h"
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#include "jisx0208.h"
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#include "jisx0212.h"
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const TUint KSingleShift2=0x8e;
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const TUint KSingleShift3=0x8f;
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#if defined(_DEBUG)
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_LIT(KLitPanicText, "EUCJP_PACKED");
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enum TPanic
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{
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EPanicNothingToConvert1=1,
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EPanicNothingToConvert2,
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EPanicNothingToConvert3,
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EPanicNothingToConvert4,
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EPanicNothingToConvert5,
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EPanicNothingToConvert6,
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EPanicOddNumberOfBytes1,
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EPanicOddNumberOfBytes2,
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EPanicOddNumberOfBytes3,
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EPanicOddNumberOfBytes4,
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EPanicOddNumberOfBytes5,
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EPanicOddNumberOfBytes6,
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EPanicBadHighBit1,
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EPanicBadHighBit2,
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EPanicBadHighBit3,
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EPanicBadHighBit4,
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EPanicBadHighBit5,
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EPanicBadHighBit6,
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EPanicBadHighBit7,
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EPanicBadPointers1,
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EPanicBadPointers2,
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EPanicBadPointers3,
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EPanicBadPointers4,
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EPanicBadPointers5,
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EPanicBadPointers6,
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EPanicBadPointers7,
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EPanicBadPointers8,
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EPanicBadPointers9,
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EPanicBadPointers10,
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EPanicBadPointers11,
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EPanicBadPointers12,
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EPanicBadPointers13,
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EPanicBadPointers14,
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EPanicBadPointers15,
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EPanicBadPointers16,
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EPanicBadPointers17,
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EPanicBadPointers18,
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EPanicBadPointers19,
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EPanicBadPointers20,
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EPanicBadPointers21,
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EPanicBadPointers22,
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EPanicBadPointers23,
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EPanicBadPointers24,
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EPanicBadPointers25,
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EPanicBadPointers26,
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EPanicBadPointers27,
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EPanicBadPointers28,
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EPanicBadPointers29,
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EPanicBadPointers30,
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EPanicBadPointers31,
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EPanicBadPointers32,
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EPanicBadPointers33,
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EPanicBadPointers34,
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EPanicBadPointers35,
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EPanicBadPointers36,
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EPanicBadCalculation1,
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EPanicBadCalculation2,
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EPanicNumberOfBytesIsNotMultipleOfThree1,
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EPanicNumberOfBytesIsNotMultipleOfThree2,
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EPanicSingleShift2Expected,
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EPanicSingleShift3Expected
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};
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LOCAL_C void Panic(TPanic aPanic)
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{
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User::Panic(KLitPanicText, aPanic);
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}
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#endif
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/**
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@return The number of bytes that can be converted from aDescriptor to JisRoman
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@internalTechnology
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*/
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TInt NumberOfBytesAbleToConvertToJisRoman(const TDesC8& aDescriptor)
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{
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const TUint8* pointerToPreviousByte=aDescriptor.Ptr()-1;
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const TUint8* const pointerToLastByte=pointerToPreviousByte+aDescriptor.Length();
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if (pointerToPreviousByte==pointerToLastByte)
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{
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return 0;
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}
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FOREVER
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{
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers14));
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const TUint currentByte=*(pointerToPreviousByte+1);
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if (currentByte&0x80)
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{
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break;
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}
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers15));
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++pointerToPreviousByte;
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__ASSERT_DEBUG(pointerToPreviousByte<=pointerToLastByte, Panic(EPanicBadPointers16));
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if (pointerToPreviousByte>=pointerToLastByte)
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{
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break;
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}
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}
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return (pointerToPreviousByte+1)-aDescriptor.Ptr();
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}
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/**
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@return The number of bytes that can be converted from aDescriptor to Jis X208
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@internalTechnology
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*/
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TInt NumberOfBytesAbleToConvertToJisX0208(const TDesC8& aDescriptor)
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{
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const TUint8* pointerToPreviousByte=aDescriptor.Ptr()-1;
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const TUint8* const pointerToLastByte=pointerToPreviousByte+aDescriptor.Length();
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if (pointerToPreviousByte==pointerToLastByte)
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{
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return 0;
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}
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FOREVER
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{
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers17));
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TUint currentByte=*(pointerToPreviousByte+1);
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if (currentByte<0xa0)
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{
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break;
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}
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers18));
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if (pointerToLastByte-pointerToPreviousByte<2)
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{
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break;
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}
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++pointerToPreviousByte;
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currentByte=*(pointerToPreviousByte+1);
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if (currentByte<0xa0)
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{
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return CCnvCharacterSetConverter::EErrorIllFormedInput;
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}
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers19));
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++pointerToPreviousByte;
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__ASSERT_DEBUG(pointerToPreviousByte<=pointerToLastByte, Panic(EPanicBadPointers20));
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if (pointerToPreviousByte>=pointerToLastByte)
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{
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break;
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}
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}
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return (pointerToPreviousByte+1)-aDescriptor.Ptr();
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}
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/**
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@return The number of bytes that can be converted from aDescriptor to HalfWidthKatakana
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@internalTechnology
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*/
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TInt NumberOfBytesAbleToConvertToHalfWidthKatakana8(const TDesC8& aDescriptor)
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{
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const TUint8* pointerToPreviousByte=aDescriptor.Ptr()-1;
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const TUint8* const pointerToLastByte=pointerToPreviousByte+aDescriptor.Length();
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if (pointerToPreviousByte==pointerToLastByte)
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{
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return 0;
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}
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FOREVER
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{
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers21));
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TUint currentByte=*(pointerToPreviousByte+1);
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if (currentByte!=KSingleShift2)
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{
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break;
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}
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers22));
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if (pointerToLastByte-pointerToPreviousByte<2)
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{
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break;
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}
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++pointerToPreviousByte;
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currentByte=*(pointerToPreviousByte+1);
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if (currentByte<0xa0)
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{
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return CCnvCharacterSetConverter::EErrorIllFormedInput;
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}
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers23));
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++pointerToPreviousByte;
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__ASSERT_DEBUG(pointerToPreviousByte<=pointerToLastByte, Panic(EPanicBadPointers24));
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if (pointerToPreviousByte>=pointerToLastByte)
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{
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break;
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}
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}
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return (pointerToPreviousByte+1)-aDescriptor.Ptr();
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}
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/**
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@return The number of bytes that can be converted from aDescriptor to JISX0212
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@internalTechnology
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*/
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TInt NumberOfBytesAbleToConvertToJisX0212(const TDesC8& aDescriptor)
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{
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const TUint8* pointerToPreviousByte=aDescriptor.Ptr()-1;
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const TUint8* const pointerToLastByte=pointerToPreviousByte+aDescriptor.Length();
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if (pointerToPreviousByte==pointerToLastByte)
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{
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return 0;
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}
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FOREVER
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{
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers25));
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TUint currentByte=*(pointerToPreviousByte+1);
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if (currentByte!=KSingleShift3)
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{
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break;
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}
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers26));
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if (pointerToLastByte-pointerToPreviousByte<3)
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{
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break;
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}
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++pointerToPreviousByte;
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currentByte=*(pointerToPreviousByte+1);
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if (currentByte<0xa0)
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{
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return CCnvCharacterSetConverter::EErrorIllFormedInput;
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}
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers27));
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++pointerToPreviousByte;
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currentByte=*(pointerToPreviousByte+1);
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if (currentByte<0xa0)
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{
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return CCnvCharacterSetConverter::EErrorIllFormedInput;
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}
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__ASSERT_DEBUG(pointerToPreviousByte<pointerToLastByte, Panic(EPanicBadPointers28));
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++pointerToPreviousByte;
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__ASSERT_DEBUG(pointerToPreviousByte<=pointerToLastByte, Panic(EPanicBadPointers29));
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if (pointerToPreviousByte>=pointerToLastByte)
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{
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break;
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}
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}
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return (pointerToPreviousByte+1)-aDescriptor.Ptr();
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}
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void DummyConvertToIntermediateBufferInPlace(TDes8&)
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{
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}
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/**
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Converts to JISX0212
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@internalTechnology
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*/
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void ConvertToJisX0212FromEucJpPackedInPlace(TDes8& aDescriptor)
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{
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const TInt descriptorLength=aDescriptor.Length();
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__ASSERT_DEBUG(descriptorLength>0, Panic(EPanicNothingToConvert6));
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__ASSERT_DEBUG(descriptorLength%3==0, Panic(EPanicNumberOfBytesIsNotMultipleOfThree2));
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TUint8* pointerToTargetByte=CONST_CAST(TUint8*, aDescriptor.Ptr());
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const TUint8* pointerToSourceByte=pointerToTargetByte;
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const TUint8* const pointerToLastByte=pointerToSourceByte+(descriptorLength-1);
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294 |
FOREVER
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|
295 |
{
|
|
sl@0
|
296 |
__ASSERT_DEBUG(*pointerToSourceByte==KSingleShift3, Panic(EPanicSingleShift3Expected));
|
|
sl@0
|
297 |
__ASSERT_DEBUG(pointerToSourceByte<pointerToLastByte, Panic(EPanicBadPointers33));
|
|
sl@0
|
298 |
++pointerToSourceByte;
|
|
sl@0
|
299 |
TUint sourceByte=*pointerToSourceByte;
|
|
sl@0
|
300 |
__ASSERT_DEBUG(sourceByte&0x80, Panic(EPanicBadHighBit6));
|
|
sl@0
|
301 |
*pointerToTargetByte=STATIC_CAST(TUint8, sourceByte&~0x80);
|
|
sl@0
|
302 |
__ASSERT_DEBUG(pointerToSourceByte<pointerToLastByte, Panic(EPanicBadPointers34));
|
|
sl@0
|
303 |
++pointerToSourceByte;
|
|
sl@0
|
304 |
sourceByte=*pointerToSourceByte;
|
|
sl@0
|
305 |
__ASSERT_DEBUG(sourceByte&0x80, Panic(EPanicBadHighBit7));
|
|
sl@0
|
306 |
__ASSERT_DEBUG(pointerToTargetByte<pointerToLastByte, Panic(EPanicBadPointers35));
|
|
sl@0
|
307 |
++pointerToTargetByte;
|
|
sl@0
|
308 |
*pointerToTargetByte=STATIC_CAST(TUint8, sourceByte&~0x80);
|
|
sl@0
|
309 |
__ASSERT_DEBUG(pointerToSourceByte<=pointerToLastByte, Panic(EPanicBadPointers36));
|
|
sl@0
|
310 |
if (pointerToSourceByte>=pointerToLastByte)
|
|
sl@0
|
311 |
{
|
|
sl@0
|
312 |
break;
|
|
sl@0
|
313 |
}
|
|
sl@0
|
314 |
++pointerToSourceByte;
|
|
sl@0
|
315 |
++pointerToTargetByte;
|
|
sl@0
|
316 |
}
|
|
sl@0
|
317 |
aDescriptor.SetLength((descriptorLength/3)*2);
|
|
sl@0
|
318 |
}
|
|
sl@0
|
319 |
|
|
sl@0
|
320 |
/**
|
|
sl@0
|
321 |
Converts to JISX0208
|
|
sl@0
|
322 |
@internalTechnology
|
|
sl@0
|
323 |
*/
|
|
sl@0
|
324 |
void ConvertToJisX0208FromEucJpPackedInPlace(TDes8& aDescriptor)
|
|
sl@0
|
325 |
{
|
|
sl@0
|
326 |
const TInt descriptorLength=aDescriptor.Length();
|
|
sl@0
|
327 |
__ASSERT_DEBUG(descriptorLength>0, Panic(EPanicNothingToConvert4));
|
|
sl@0
|
328 |
__ASSERT_DEBUG(descriptorLength%2==0, Panic(EPanicOddNumberOfBytes5));
|
|
sl@0
|
329 |
TUint8* pointerToCurrentByte=CONST_CAST(TUint8*, aDescriptor.Ptr());
|
|
sl@0
|
330 |
const TUint8* const pointerToLastByte=pointerToCurrentByte+(descriptorLength-1);
|
|
sl@0
|
331 |
FOREVER
|
|
sl@0
|
332 |
{
|
|
sl@0
|
333 |
const TUint currentByte=*pointerToCurrentByte;
|
|
sl@0
|
334 |
__ASSERT_DEBUG(currentByte&0x80, Panic(EPanicBadHighBit4));
|
|
sl@0
|
335 |
*pointerToCurrentByte=STATIC_CAST(TUint8, currentByte&~0x80);
|
|
sl@0
|
336 |
__ASSERT_DEBUG(pointerToCurrentByte<=pointerToLastByte, Panic(EPanicBadPointers30));
|
|
sl@0
|
337 |
if (pointerToCurrentByte>=pointerToLastByte)
|
|
sl@0
|
338 |
{
|
|
sl@0
|
339 |
break;
|
|
sl@0
|
340 |
}
|
|
sl@0
|
341 |
++pointerToCurrentByte;
|
|
sl@0
|
342 |
}
|
|
sl@0
|
343 |
}
|
|
sl@0
|
344 |
|
|
sl@0
|
345 |
/**
|
|
sl@0
|
346 |
Converts to Half Width Katakana
|
|
sl@0
|
347 |
@internalTechnology
|
|
sl@0
|
348 |
*/
|
|
sl@0
|
349 |
void ConvertToHalfWidthKatakana8FromEucJpPackedInPlace(TDes8& aDescriptor)
|
|
sl@0
|
350 |
{
|
|
sl@0
|
351 |
const TInt descriptorLength=aDescriptor.Length();
|
|
sl@0
|
352 |
__ASSERT_DEBUG(descriptorLength>0, Panic(EPanicNothingToConvert5));
|
|
sl@0
|
353 |
__ASSERT_DEBUG(descriptorLength%2==0, Panic(EPanicOddNumberOfBytes6));
|
|
sl@0
|
354 |
TUint8* pointerToTargetByte=CONST_CAST(TUint8*, aDescriptor.Ptr());
|
|
sl@0
|
355 |
const TUint8* pointerToSourceByte=pointerToTargetByte;
|
|
sl@0
|
356 |
const TUint8* const pointerToLastByte=pointerToSourceByte+(descriptorLength-1);
|
|
sl@0
|
357 |
FOREVER
|
|
sl@0
|
358 |
{
|
|
sl@0
|
359 |
__ASSERT_DEBUG(*pointerToSourceByte==KSingleShift2, Panic(EPanicSingleShift2Expected));
|
|
sl@0
|
360 |
__ASSERT_DEBUG(pointerToSourceByte<pointerToLastByte, Panic(EPanicBadPointers31));
|
|
sl@0
|
361 |
++pointerToSourceByte;
|
|
sl@0
|
362 |
const TUint sourceByte=*pointerToSourceByte;
|
|
sl@0
|
363 |
__ASSERT_DEBUG(sourceByte&0x80, Panic(EPanicBadHighBit5));
|
|
sl@0
|
364 |
*pointerToTargetByte=STATIC_CAST(TUint8, sourceByte);
|
|
sl@0
|
365 |
__ASSERT_DEBUG(pointerToSourceByte<=pointerToLastByte, Panic(EPanicBadPointers32));
|
|
sl@0
|
366 |
if (pointerToSourceByte>=pointerToLastByte)
|
|
sl@0
|
367 |
{
|
|
sl@0
|
368 |
break;
|
|
sl@0
|
369 |
}
|
|
sl@0
|
370 |
++pointerToSourceByte;
|
|
sl@0
|
371 |
++pointerToTargetByte;
|
|
sl@0
|
372 |
}
|
|
sl@0
|
373 |
aDescriptor.SetLength(descriptorLength/2);
|
|
sl@0
|
374 |
}
|
|
sl@0
|
375 |
|
|
sl@0
|
376 |
|