author | Petteri Saari <petteri.saari@digia.com> |
Thu, 02 Dec 2010 15:23:48 +0200 | |
branch | MSRP_FrameWork |
changeset 60 | 7634585a4347 |
parent 0 | 307788aac0a8 |
permissions | -rw-r--r-- |
0
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// Copyright (c) 2004-2009 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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// Name : CSIPTokenizer.cpp |
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// Part of : Codec |
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// Version : SIP/3.0 |
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// |
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#include "CSIPTokenizer.h" |
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#include "sipcodecerr.h" |
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// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::NewL |
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// ----------------------------------------------------------------------------- |
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// |
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CSIPTokenizer* CSIPTokenizer::NewL( |
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const TDesC8& aValue, |
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const TChar& aSeparator, |
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TBool aIgnoreParenthesis, |
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TBool aIgnoreLastEmptyValue, |
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TBool aSkipSeparatorsBeforeAt) |
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{ |
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CSIPTokenizer* self = |
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CSIPTokenizer::NewLC( aValue,aSeparator, aIgnoreParenthesis, |
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aIgnoreLastEmptyValue, aSkipSeparatorsBeforeAt ); |
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CleanupStack::Pop(self); |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::NewLC |
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// ----------------------------------------------------------------------------- |
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// |
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CSIPTokenizer* CSIPTokenizer::NewLC( |
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const TDesC8& aValue, |
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const TChar& aSeparator, |
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TBool aIgnoreParenthesis, |
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TBool aIgnoreLastEmptyValue, |
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TBool aSkipSeparatorsBeforeAt) |
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{ |
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__ASSERT_ALWAYS (aValue.Length() > 0, User::Leave (KErrSipCodecTokenizer)); |
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__ASSERT_ALWAYS (aSeparator != '\\', User::Leave (KErrSipCodecTokenizer)); |
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__ASSERT_ALWAYS (aSeparator != '"', User::Leave (KErrSipCodecTokenizer)); |
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__ASSERT_ALWAYS (aSeparator != '<', User::Leave (KErrSipCodecTokenizer)); |
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__ASSERT_ALWAYS (aSeparator != '>', User::Leave (KErrSipCodecTokenizer)); |
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if(!aIgnoreParenthesis) |
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{ |
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__ASSERT_ALWAYS (aSeparator != '(', User::Leave(KErrSipCodecTokenizer)); |
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__ASSERT_ALWAYS (aSeparator != ')', User::Leave(KErrSipCodecTokenizer)); |
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} |
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CSIPTokenizer* self = |
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new(ELeave)CSIPTokenizer(aValue,aSeparator,aIgnoreParenthesis, |
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aIgnoreLastEmptyValue, |
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aSkipSeparatorsBeforeAt ); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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return self; |
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} |
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// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::CSIPTokenizer |
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// ----------------------------------------------------------------------------- |
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// |
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CSIPTokenizer::CSIPTokenizer(const TDesC8& aValue, |
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const TChar& aSeparator, |
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TBool aIgnoreParenthesis, |
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TBool aIgnoreLastEmptyValue, |
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TBool aSkipSeparatorsBeforeAt) |
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: iOriginalValue (aValue), |
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iLexer( aValue ), |
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iSeparator (aSeparator), |
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iPreviousWasBackSlash (EFalse), |
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iInQuotes (EFalse), |
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iInAngleBrackets (EFalse), |
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iInParenthesis (EFalse), |
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iIgnoreParenthesis (aIgnoreParenthesis), |
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iIgnoreLastEmptyValue ( aIgnoreLastEmptyValue ), |
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iSkipSeparatorsBeforeAt ( aSkipSeparatorsBeforeAt ) |
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{ |
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} |
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// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::ConstructL |
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// ----------------------------------------------------------------------------- |
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// |
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void CSIPTokenizer::ConstructL() |
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{ |
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iTokens = new(ELeave)CPtrC8Array(1); |
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103 |
TokenizeL(); |
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} |
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105 |
|
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106 |
// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::~CSIPTokenizer |
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108 |
// ----------------------------------------------------------------------------- |
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109 |
// |
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CSIPTokenizer::~CSIPTokenizer() |
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111 |
{ |
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delete iTokens; |
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} |
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114 |
|
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115 |
// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::Tokens |
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// ----------------------------------------------------------------------------- |
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118 |
// |
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CPtrC8Array& CSIPTokenizer::Tokens() |
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120 |
{ |
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return *iTokens; |
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} |
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123 |
|
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124 |
// ----------------------------------------------------------------------------- |
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125 |
// CSIPTokenizer::TokenizeL |
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// ----------------------------------------------------------------------------- |
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127 |
// |
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void CSIPTokenizer::TokenizeL() |
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129 |
{ |
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TChar chr = iLexer.Get(); |
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131 |
|
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while (chr) |
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133 |
{ |
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iParsedSoFar++; iTokenLength++; |
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if (chr == '\\') |
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136 |
{ |
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// If the previous character was already a backslash, |
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// then it is quoting the current backslash. |
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iPreviousWasBackSlash = !iPreviousWasBackSlash; |
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140 |
} |
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141 |
else |
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142 |
{ |
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switch (chr) |
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144 |
{ |
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case '"' : HandleQuote(); break; |
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case '<' : HandleOpeningAngleBracketL(); break; |
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case '>' : HandleClosingAngleBracketL(); break; |
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case '(' : HandleOpeningParenthesis(); break; |
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case ')' : HandleClosingParenthesis(); break; |
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default: HandleOtherCharacterL(chr); break; |
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151 |
} |
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iPreviousWasBackSlash = EFalse; |
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153 |
} |
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chr = iLexer.Get(); |
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155 |
} |
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156 |
|
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157 |
CheckMatchingQuotesBracketsL(); |
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AddLastTokenL(); // Add the last token after all the other tokens. |
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159 |
} |
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160 |
|
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161 |
// ----------------------------------------------------------------------------- |
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162 |
// CSIPTokenizer::HandleQuote |
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163 |
// ----------------------------------------------------------------------------- |
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164 |
// |
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165 |
void CSIPTokenizer::HandleQuote() |
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166 |
{ |
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167 |
if (iPreviousWasBackSlash) |
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168 |
{ |
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169 |
return; |
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170 |
} |
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171 |
|
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iInQuotes = !iInQuotes; |
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iQuoteCount++; |
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174 |
} |
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175 |
|
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176 |
// ----------------------------------------------------------------------------- |
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177 |
// CSIPTokenizer::HandleOpeningAngleBracketL |
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178 |
// ----------------------------------------------------------------------------- |
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179 |
// |
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void CSIPTokenizer::HandleOpeningAngleBracketL() |
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181 |
{ |
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182 |
if (iInQuotes) |
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183 |
{ |
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184 |
return; // ignore |
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185 |
} |
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186 |
|
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187 |
// Nested angle brackets are not allowed |
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188 |
__ASSERT_ALWAYS (!iInAngleBrackets, |
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189 |
User::Leave (KErrSipCodecTokenizer)); |
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190 |
|
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191 |
iInAngleBrackets = ETrue; |
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192 |
iAngleBracketCount++; |
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193 |
} |
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194 |
|
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195 |
// ----------------------------------------------------------------------------- |
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196 |
// CSIPTokenizer::HandleClosingAngleBracketL |
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197 |
// ----------------------------------------------------------------------------- |
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198 |
// |
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199 |
void CSIPTokenizer::HandleClosingAngleBracketL() |
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200 |
{ |
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201 |
if (iInQuotes) |
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202 |
{ |
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203 |
return; // ignore |
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204 |
} |
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205 |
|
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206 |
// Matching opening angle bracket has to exist |
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207 |
__ASSERT_ALWAYS (iInAngleBrackets, |
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208 |
User::Leave (KErrSipCodecTokenizer)); |
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209 |
|
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210 |
iInAngleBrackets = EFalse; |
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iAngleBracketCount++; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::HandleOpeningParenthesis |
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// ----------------------------------------------------------------------------- |
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// |
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void CSIPTokenizer::HandleOpeningParenthesis() |
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{ |
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if (iInQuotes) |
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{ |
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return; // ignore |
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} |
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|
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iInParenthesis = ETrue; |
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iParenthesisCount++; |
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} |
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228 |
|
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// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::HandleClosingParenthesis |
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// ----------------------------------------------------------------------------- |
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// |
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void CSIPTokenizer::HandleClosingParenthesis() |
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{ |
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if (iInQuotes) |
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{ |
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return; // ignore |
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} |
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239 |
|
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iInParenthesis = EFalse; |
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iParenthesisCount++; |
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} |
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243 |
|
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// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::CheckMatchingQuotesBracketsL |
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// ----------------------------------------------------------------------------- |
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// |
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void CSIPTokenizer::CheckMatchingQuotesBracketsL() |
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{ |
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__ASSERT_ALWAYS (iQuoteCount%2 == 0, |
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User::Leave (KErrSipCodecTokenizer)); |
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252 |
|
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__ASSERT_ALWAYS (iAngleBracketCount%2 == 0, |
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User::Leave (KErrSipCodecTokenizer)); |
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255 |
|
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if(!iIgnoreParenthesis) |
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{ |
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__ASSERT_ALWAYS (iParenthesisCount%2 == 0, |
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User::Leave (KErrSipCodecTokenizer)); |
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} |
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} |
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262 |
|
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// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::HandleOtherCharacterL |
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// ----------------------------------------------------------------------------- |
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// |
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void CSIPTokenizer::HandleOtherCharacterL(const TChar& aChr) |
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{ |
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__ASSERT_ALWAYS (iTokenLength > 0, |
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User::Leave (KErrSipCodecTokenizer)); |
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271 |
|
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if (iInQuotes || |
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iInAngleBrackets || |
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(iInParenthesis && !iIgnoreParenthesis)) |
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{ |
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return; |
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} |
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|
278 |
|
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if (aChr != iSeparator) |
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{ |
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return; |
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} |
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|
283 |
|
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TPtrC8 remainder(iLexer.Remainder()); |
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if (aChr == iSeparator && |
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iSkipSeparatorsBeforeAt && |
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remainder.Locate('@') >= 0) |
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288 |
{ |
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CSIPTokenizer* atChrTokenizer = |
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CSIPTokenizer::NewLC( |
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remainder, '@', EFalse, ETrue, EFalse); |
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292 |
|
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TInt atCount = atChrTokenizer->Tokens().Count() - 1; |
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|
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CleanupStack::PopAndDestroy(atChrTokenizer); |
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|
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if (atCount > 0) |
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298 |
{ |
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return; // skip the separators before '@' |
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} |
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301 |
} |
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|
302 |
|
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TUint startPos = iParsedSoFar - iTokenLength; |
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TPtrC8 token (iOriginalValue.Mid(startPos, iTokenLength-1)); |
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iTokens->AppendL(token); |
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|
306 |
|
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// Start a new token |
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iTokenLength = 0; |
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309 |
} |
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310 |
|
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311 |
// ----------------------------------------------------------------------------- |
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// CSIPTokenizer::AddLastTokenL |
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313 |
// ----------------------------------------------------------------------------- |
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314 |
// |
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void CSIPTokenizer::AddLastTokenL() |
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316 |
{ |
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if ( iIgnoreLastEmptyValue && !(iTokenLength > 0)) |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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318 |
{ |
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return; |
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} |
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321 |
|
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__ASSERT_ALWAYS (iTokenLength > 0, |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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User::Leave (KErrSipCodecTokenizer)); |
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324 |
|
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TUint startPos = iParsedSoFar - iTokenLength; |
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parents:
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TPtrC8 token (iOriginalValue.Mid(startPos, iTokenLength)); |
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Revision: 201003
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parents:
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327 |
|
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parents:
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iTokens->AppendL(token); |
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Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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329 |
} |