author | Pat Downey <patrick.downey@nokia.com> |
Fri, 03 Jul 2009 15:54:40 +0100 | |
changeset 5 | 10e98eab6f85 |
parent 0 | dd21522fd290 |
child 48 | 79859ed3eea9 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2006 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 the License "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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* |
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*/ |
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|
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|
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#include "config.h" |
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#include "StreamingTextCodecSymbian.h" |
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#include "CharsetData.h" |
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#include "CString.h" |
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#include "PlatformString.h" |
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#include "TextEncoding.h" |
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#include "TextEncodingRegistry.h" |
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#include <EIKENV.H> |
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#include <wtf/Assertions.h> |
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|
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using std::auto_ptr; |
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using std::min; |
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static const size_t ConversionBufferSize = 16384; |
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namespace WebCore { |
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// static data |
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CArrayFix<CCnvCharacterSetConverter::SCharacterSet>* TextCodecSymbian::s_availableCharsets = 0; |
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static auto_ptr<TextCodec> newTextCodecSymbian(const TextEncoding&, const void* additionalData) |
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{ |
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return auto_ptr<TextCodec>(new TextCodecSymbian(*static_cast<const TUint*>(additionalData))); |
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} |
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void TextCodecSymbian::registerEncodingNames(EncodingNameRegistrar registrar) |
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{ |
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TInt lastEncoding = -1; |
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const char* lastName = 0; |
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for (size_t i = 0; CharsetTable[i].name; ++i) { |
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if (CharsetTable[i].encoding != lastEncoding) { |
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lastEncoding = CharsetTable[i].encoding; |
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lastName = CharsetTable[i].name; |
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} |
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registrar(CharsetTable[i].name, lastName); |
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} |
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} |
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void TextCodecSymbian::registerCodecs(TextCodecRegistrar registrar) |
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{ |
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TInt lastEncoding = -1; |
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for (size_t i = 0; CharsetTable[i].name; ++i) |
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if (CharsetTable[i].encoding != lastEncoding) { |
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registrar(CharsetTable[i].name, newTextCodecSymbian, &CharsetTable[i].encoding); |
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lastEncoding = CharsetTable[i].encoding; |
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} |
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} |
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|
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TextCodecSymbian::TextCodecSymbian(TUint encoding) |
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: m_converter(0) |
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, m_state(CCnvCharacterSetConverter::KStateDefault) |
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, m_encoding(encoding) |
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, m_firstChunkDecoded(EFalse) |
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, m_numBufferedBytes(0) |
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{ |
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} |
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TextCodecSymbian::~TextCodecSymbian() |
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{ |
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delete m_converter; |
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m_fallbackCodec.clear(); |
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} |
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bool TextCodecSymbian::initializeConverter() |
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{ |
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if( m_firstChunkDecoded ) return true; |
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|
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// Removed the call to CEikonEnv::Static()->FsSession() which should not be |
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// called in a thread where UiKon static env does not exist. This gets called |
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// by the icon database thread which does not have it. Also, the file |
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// server session is not needed anymore. It exists only for backward compatibility |
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RFs fsSession; |
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|
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// FIXME: find a way to free the global availableCharsets array |
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if( !m_converter ) { |
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// first time call to charconv |
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if( ( m_converter = |
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CCnvCharacterSetConverter::NewL() ) == NULL ) |
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return false; |
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|
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// caching the available charsets table |
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if( !s_availableCharsets ) |
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s_availableCharsets = CCnvCharacterSetConverter::CreateArrayOfCharacterSetsAvailableL( fsSession ); |
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} |
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// check decoder avialability |
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checkSupportedEncoding(); |
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|
109 |
// prepare character conversion |
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|
110 |
m_converter->PrepareToConvertToOrFromL( m_encoding, *s_availableCharsets, fsSession ); |
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|
111 |
|
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112 |
return true; |
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113 |
} |
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114 |
|
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115 |
String TextCodecSymbian::decode(const char* chs, size_t length, bool flush) |
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116 |
{ |
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117 |
if( !initializeConverter() ) |
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118 |
return String(); |
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119 |
|
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120 |
// FIXME: how to handle flush flag in Symbian converter? |
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121 |
if( m_encoding == KCharacterSetIdentifierIso88591 ) { |
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122 |
if( !m_fallbackCodec ) { |
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123 |
m_fallbackCodec.set(newTextCodec(Latin1Encoding()).release()); |
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124 |
} |
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125 |
|
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126 |
return m_fallbackCodec->decode( chs, length, flush ); |
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127 |
} |
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128 |
|
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129 |
Vector<UChar> result; |
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130 |
|
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131 |
// prepare the input buffer for character converter, |
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132 |
// the leftover bytes need to be decoded first. |
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133 |
TPtrC8 inBuf(0,0); |
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134 |
char* inputString = 0; |
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135 |
if( m_numBufferedBytes != 0 ) { |
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136 |
const int fullLength = m_numBufferedBytes + length; |
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137 |
inputString = (char*)malloc( fullLength ); |
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138 |
if( !inputString ) return String(); |
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139 |
memcpy( inputString, m_bufferedBytes, m_numBufferedBytes ); |
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140 |
memcpy( inputString + m_numBufferedBytes, chs, length ); |
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141 |
inBuf.Set( (const TUint8*)inputString, fullLength ); |
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142 |
m_numBufferedBytes = 0; |
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143 |
} |
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144 |
else { |
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145 |
inBuf.Set( (const TUint8*)chs, length ); |
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146 |
} |
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147 |
|
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148 |
// output buffer |
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149 |
UChar* buffer = (UChar*)malloc( ConversionBufferSize*sizeof(UChar) ); |
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150 |
if( !buffer ) return String(); |
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151 |
TPtr16 outBuf( (TUint16*)buffer, 0, ConversionBufferSize ); |
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152 |
|
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153 |
for(;;) { |
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154 |
int rep = 0; |
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155 |
int rIndx = 0; |
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156 |
|
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157 |
int retValue = m_converter->ConvertToUnicode( outBuf, inBuf, m_state, rep, rIndx ); |
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158 |
|
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159 |
if( retValue == CCnvCharacterSetConverter::EErrorIllFormedInput ) { |
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160 |
if (inBuf.Length() < strlen((char*) m_bufferedBytes)) |
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|
161 |
{ |
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162 |
memcpy( m_bufferedBytes, inBuf.Ptr(), inBuf.Length() ); |
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163 |
m_numBufferedBytes = inBuf.Length(); |
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164 |
} |
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|
165 |
break; |
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|
166 |
} |
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|
167 |
else if( retValue == 0 ) { |
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|
168 |
// decoded fully, exit |
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|
169 |
appendOmittingBOM( result, buffer, outBuf.Length() ); |
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|
170 |
break; |
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|
171 |
} |
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|
172 |
else { |
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|
173 |
// prepare for next round |
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|
174 |
appendOmittingBOM( result, buffer, outBuf.Length() ); |
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|
175 |
outBuf.SetLength(0); |
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|
176 |
inBuf.Set( inBuf.Right(retValue) ); |
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|
177 |
} |
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|
178 |
} |
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|
179 |
|
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|
180 |
free( buffer ); |
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|
181 |
free( inputString ); |
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|
182 |
|
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|
183 |
if(!m_firstChunkDecoded ) |
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Revision: 200911
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|
184 |
m_firstChunkDecoded = true; |
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|
185 |
|
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|
186 |
String resultString = String::adopt(result); |
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|
187 |
return resultString; |
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|
188 |
} |
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|
189 |
|
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|
190 |
CString TextCodecSymbian::encode(const UChar* data, size_t length, bool allowEntities) |
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|
191 |
{ |
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|
192 |
if( !initializeConverter() ) |
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|
193 |
return CString(); |
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|
194 |
|
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|
195 |
// FIXME: how to handle allowEntities flag in Symbian converter? |
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|
196 |
// We should figure out a good way to use SetReplacementForUnconvertibleUnicodeCharactersL() |
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|
197 |
if( m_encoding == KCharacterSetIdentifierIso88591 ) { |
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|
198 |
if( !m_fallbackCodec ) { |
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|
199 |
m_fallbackCodec.set(newTextCodec(Latin1Encoding()).release()); |
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|
200 |
} |
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|
201 |
|
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|
202 |
return m_fallbackCodec->encode( data, length, allowEntities ); |
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|
203 |
} |
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|
204 |
|
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|
205 |
Vector<char> result; |
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|
206 |
|
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|
207 |
// input buffer |
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|
208 |
TPtrC inBuf( (const TUint16*)data, length ); |
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|
209 |
|
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|
210 |
// output buffer |
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|
211 |
char* buffer = (char*)malloc( ConversionBufferSize*sizeof(char) ); |
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|
212 |
if( !buffer ) return CString(); |
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Revision: 200911
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|
213 |
size_t size = 0; |
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Revision: 200911
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|
214 |
TPtr8 outBuf( (TUint8*)buffer, 0, ConversionBufferSize ); |
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parents:
diff
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|
215 |
|
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Revision: 200911
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|
216 |
for(;;) { |
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Revision: 200911
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|
217 |
TInt retValue = m_converter->ConvertFromUnicode( outBuf, inBuf ); |
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const int olen = outBuf.Length(); |
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|
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if( retValue == CCnvCharacterSetConverter::EErrorIllFormedInput ) |
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break; |
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|
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result.resize( size + olen ); |
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memcpy( result.data() + size, buffer, olen ); |
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size += olen; |
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|
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if( retValue == 0 ) |
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break; |
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else { |
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outBuf.SetLength(0); |
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inBuf.Set( inBuf.Right(retValue) ); |
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} |
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} |
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|
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free( buffer ); |
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|
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if( !m_firstChunkDecoded ) |
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m_firstChunkDecoded = true; |
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|
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return CString( result.data(), size ); |
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} |
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|
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void TextCodecSymbian::checkSupportedEncoding() |
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{ |
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int count = s_availableCharsets->Count(); |
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|
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for (int index = 0; index < count; index++) { |
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if (m_encoding == ((CCnvCharacterSetConverter::SCharacterSet)(s_availableCharsets->At(index))).Identifier()) |
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return; |
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} |
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|
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// otherwise fall back to iso88591 |
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m_encoding = KCharacterSetIdentifierIso88591; |
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} |
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|
5 | 257 |
void TextCodecSymbian::deleteStatAvailCharsets() |
258 |
{ |
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delete s_availableCharsets; |
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s_availableCharsets = 0; |
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} |
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||
0
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} |
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// END OF FILE |