author | hgs |
Tue, 20 Jul 2010 16:35:53 +0530 | |
changeset 44 | 97b0fb8a2cc2 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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// Copyright (c) 2002-2009 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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// INIFILE.CPP |
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// Defines the class CIniFile for accessing ini file. |
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// is used by the test harness in t_Usbman_dummyCC.mmp |
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// |
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// |
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|
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/** |
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@file |
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*/ |
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#include <f32file.h> |
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#include "LegacyParser.h" |
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const TUint KTokenSize = 32; |
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_LIT(KDefaultIniFileDir,"\\"); |
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void CIniFile::Panic(TIniPanic aPanic) |
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{ |
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_LIT(KIniData,"CIniFile"); |
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User::Panic(KIniData,aPanic); |
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} |
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CIniFile::CIniFile() |
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: iPtr(NULL,0) |
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{ |
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} |
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CIniFile::~CIniFile() |
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{ |
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delete (TText*)iPtr.Ptr(); |
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delete iToken; |
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delete iName; |
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} |
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CIniFile* CIniFile::NewL(const TDesC& aName) |
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/** |
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* Factory function for CIniFile. |
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* |
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* @param aName The name of the ini file to be used, e.g. "GPRSBTT.INI". |
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*/ |
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{ |
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CIniFile* self = new(ELeave) CIniFile; |
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CleanupStack::PushL(self); |
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self->ConstructL(aName, KDefaultIniFileDir); |
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CleanupStack::Pop(self); |
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return self; |
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} |
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CIniFile* CIniFile::NewL(const TDesC& aName, const TDesC& aPath) |
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/** |
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* Factory function for CIniFile that allows the user to specify both filename |
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* and path |
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* |
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* @param aName The name of the ini file to be used, e.g. "GPRSBTT.INI". |
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* @param aPath The location of the file e.g. "\\system\\data\\". |
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*/ |
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{ |
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CIniFile* self = new(ELeave) CIniFile; |
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CleanupStack::PushL(self); |
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self->ConstructL(aName, aPath); |
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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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void CIniFile::ConstructL(const TDesC& aName, const TDesC& aPath) |
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/** |
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* Allocate a buffer and Read file's contents into iPtr |
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* |
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* @param aName is the name of the ini file to be used, e.g. "REFTSY.INI" |
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*/ |
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{ |
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iToken = HBufC::NewL(KTokenSize+2); // 2 extra chars for [] |
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RFs fs; |
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User::LeaveIfError(fs.Connect()); |
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CleanupClosePushL(fs); |
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TFindFile ff(fs); |
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#ifdef BUILD_FOR_JETSTREAM |
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// Jetstream |
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// For security reasons ini files are in the private directory for the |
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// comms-infras/rootserver (C32exe) process |
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TBuf<KMaxPath> privatePath; |
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User::LeaveIfError(fs.PrivatePath(privatePath)); |
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User::LeaveIfError(ff.FindByDir(aName, privatePath)); |
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#else |
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User::LeaveIfError(ff.FindByDir(aName, aPath)); |
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#endif |
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|
105 |
|
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iName=ff.File().AllocL(); |
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107 |
|
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108 |
RFile file; |
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109 |
TInt size; |
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User::LeaveIfError(file.Open(fs,*iName,EFileStreamText|EFileRead|EFileShareReadersOnly)); |
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CleanupClosePushL(file); |
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112 |
|
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User::LeaveIfError(file.Size(size)); |
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114 |
|
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115 |
|
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TText* data = REINTERPRET_CAST(TText*, User::AllocL(size)); |
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iPtr.Set(data, size/sizeof(TText), size/sizeof(TText)); |
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TPtr8 dest(REINTERPRET_CAST(TUint8*,data), 0, size); |
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User::LeaveIfError(file.Read(dest)); |
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120 |
|
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TUint8* ptr = REINTERPRET_CAST(TUint8*,data); |
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122 |
|
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123 |
// |
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124 |
// This is orderred as FEFF assuming the processor is Little Endian |
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// The data in the file is FFFE. PRR 28/9/98 |
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126 |
// |
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if(size>= STATIC_CAST(TInt,sizeof(TText)) && iPtr[0]==0xFEFF) |
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128 |
{ |
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Mem::Copy(ptr, ptr+sizeof(TText), size-sizeof(TText)); |
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iPtr.Set(data, size/sizeof(TText)-1, size/sizeof(TText)-1); |
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131 |
} |
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else if(size) |
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133 |
{ |
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TText* newdata = REINTERPRET_CAST(TText*, |
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User::AllocL(size*sizeof(TText))); |
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iPtr.Set(newdata, size, size); |
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TInt i; |
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for(i=0 ; i<size ; ++i) |
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iPtr[i]=ptr[i]; |
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delete data; |
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141 |
} |
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142 |
|
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143 |
CleanupStack::PopAndDestroy(); // file |
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CleanupStack::PopAndDestroy(); // fs |
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145 |
} |
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146 |
|
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147 |
TBool CIniFile::FindVar(const TDesC &aSection, |
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const TDesC &aVarName, |
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TPtrC &aResult) |
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150 |
// |
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151 |
// Find a variable's value given a section name and a var name |
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152 |
// |
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153 |
{ |
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__ASSERT_DEBUG(aSection.Length()<=(TInt)KTokenSize,Panic(ESectionNameTooBig)); |
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__ASSERT_DEBUG(aVarName.Length()<=(TInt)KTokenSize,Panic(EVarNameTooBig)); |
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156 |
|
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157 |
TPtr sectionToken=iToken->Des(); |
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158 |
_LIT(KSectionTokenString,"[%S]"); |
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159 |
sectionToken.Format(KSectionTokenString,&aSection); |
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160 |
TInt sectionStart=iPtr.Find(sectionToken); |
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161 |
TInt ret = ETrue; |
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if (sectionStart==KErrNotFound) |
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ret = EFalse; |
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164 |
else |
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165 |
{ |
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166 |
TPtrC section=iPtr.Mid(sectionStart); |
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167 |
sectionStart+=section.Find(TPtrC(_S("]"))); |
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168 |
if (sectionStart==KErrNotFound) |
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169 |
ret = EFalse; |
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170 |
else |
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171 |
{ |
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172 |
sectionStart++; |
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173 |
section.Set(iPtr.Mid(sectionStart)); |
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|
174 |
|
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175 |
TInt sectionEnd=section.Find(TPtrC(_S("["))); |
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176 |
if (sectionEnd==KErrNotFound) |
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177 |
sectionEnd=iPtr.Length()-sectionStart; |
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178 |
else |
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179 |
sectionEnd--; |
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180 |
section.Set(iPtr.Mid(sectionStart,sectionEnd)); |
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181 |
TPtr varToken=iToken->Des(); |
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182 |
_LIT(KVarTokenString,"%S="); |
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183 |
varToken.Format(KVarTokenString,&aVarName); |
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184 |
TInt pos=section.Find(varToken); |
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185 |
if (pos==KErrNotFound) |
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186 |
ret = EFalse; |
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187 |
else |
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188 |
{ |
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189 |
// 'lex' points at the start of the data |
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190 |
TPtrC lex(section.Mid(pos)); |
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|
191 |
TInt startpos = lex.Locate(TChar('=')); |
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|
192 |
startpos++; // startpos points immediately after the =. |
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193 |
while ( TChar(lex[startpos]).IsSpace() ) |
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194 |
startpos++; // skip to start of data |
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195 |
TInt endpos = lex.Locate(TChar('\n')); // assumes \n is after =. |
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196 |
if ( endpos == KErrNotFound ) // may not be \n on last line |
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197 |
endpos = section.Length()-1; |
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|
198 |
aResult.Set(lex.Mid(startpos).Ptr(),endpos-startpos-1); |
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199 |
} |
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200 |
} |
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201 |
} |
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202 |
|
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203 |
return ret; |
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204 |
} |
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205 |
|
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206 |
TBool CIniFile::FindVar(const TDesC &aSection,const TDesC &aVarName, |
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207 |
TInt &aResult) |
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208 |
{ |
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TInt ret = EFalse; |
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TPtrC ptr(NULL,0); |
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if (FindVar(aSection,aVarName,ptr)) |
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{ |
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TLex lex(ptr); |
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if (lex.Val(aResult)==KErrNone) |
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ret = ETrue; |
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} |
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|
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return ret; |
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} |
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|
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// |
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// End of file |