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// Copyright (c) 2006-2009 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 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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// This is the CPP file which contains utility functions for parsing the config file
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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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// User include
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#include <t_utilsconfigfileparserutility.h>
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// epoc inlcude
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#include <f32file.h>
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// contants and literals used
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const TInt KFileBufferSize = 1024;
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_LIT8(KComment,"*#*");
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/**
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NewL()
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Allocates and creates a new CT_MsgUtilsConfigFileParserUtility object
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@param aFileName
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Name of the file to be parsed
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@leave KErrNoMemory
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@return
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The newly created CT_MsgUtilsConfigFileParserUtility object
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*/
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EXPORT_C CT_MsgUtilsConfigFileParserUtility* CT_MsgUtilsConfigFileParserUtility::NewL(const TDesC& aFileName)
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{
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CT_MsgUtilsConfigFileParserUtility* self = new (ELeave) CT_MsgUtilsConfigFileParserUtility();
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CleanupStack::PushL(self);
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self->ConstructL(aFileName);
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CleanupStack::Pop();
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return self;
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}
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/**
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CT_MsgUtilsConfigFileParserUtility()
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Constructor
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*/
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EXPORT_C CT_MsgUtilsConfigFileParserUtility::CT_MsgUtilsConfigFileParserUtility()
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{
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}
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/**
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~CT_MsgUtilsConfigFileParserUtility()
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Destructor
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*/
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CT_MsgUtilsConfigFileParserUtility::~CT_MsgUtilsConfigFileParserUtility()
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{
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iName.ResetAndDestroy();
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iContent.ResetAndDestroy();
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iContent8.ResetAndDestroy();
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}
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/**
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ConstructL()
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Parses a .txt file and creates Arrays of fields and there values
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@param aFileName
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Name of the file to be parsed.
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*/
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EXPORT_C void CT_MsgUtilsConfigFileParserUtility::ConstructL(const TDesC& aFileName)
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{
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RFs fileServerSession;
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fileServerSession.Connect();
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RFile file;
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User::LeaveIfError(file.Open(fileServerSession, aFileName, EFileRead));
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TInt eof = EFalse;
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TInt fileOffset = 0;
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TBuf8<KFileBufferSize> fileBuffer;
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while (!eof)
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{
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fileBuffer.SetLength(0);
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User::LeaveIfError(file.Read(fileOffset, fileBuffer, KFileBufferSize));
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TInt read = fileBuffer.Length();
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if (read < KFileBufferSize)
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{
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fileBuffer.Append('\n');
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eof = ETrue;
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}
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TInt lineOverflow = fileBuffer.Locate('\n');
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if ((lineOverflow == KErrNotFound) && (read == KFileBufferSize))
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{
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User::Leave(KErrOverflow);
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}
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TInt eol = EFalse;
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while (!eol)
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{
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TInt lineFeedLocation = fileBuffer.Locate('\n');
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if (lineFeedLocation == KErrNotFound)
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{
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eol = ETrue;
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}
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else
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{
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fileOffset += lineFeedLocation + 1;
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TInt lineLength;
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if ((lineFeedLocation != 0) && (fileBuffer[lineFeedLocation - 1] == '\r'))
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{
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lineLength = lineFeedLocation - 1;
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}
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else
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{
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lineLength = lineFeedLocation;
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}
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TPtrC8 line = fileBuffer.Left(lineLength);
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TInt commentLocation = line.Match(KComment);
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if (commentLocation != KErrNotFound)
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{
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TPtrC8 skipComment = line.Left(commentLocation);
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line.Set(skipComment);
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}
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TInt seperatorLocation = line.Locate('=');
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if (seperatorLocation != KErrNotFound)
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{
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if ((seperatorLocation == 0) || (seperatorLocation == line.Length() - 1))
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{
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seperatorLocation = KErrNotFound;
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}
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}
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if (seperatorLocation != KErrNotFound)
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{
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TPtrC8 namePtr = line.Left(seperatorLocation);
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HBufC8* nameBuf8 = HBufC8::NewL(namePtr.Length());
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CleanupStack::PushL(nameBuf8);
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TPtr8 name8 = nameBuf8->Des();
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name8.Copy(namePtr);
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name8.Trim();
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HBufC* nameBuf16 = HBufC::NewL(namePtr.Length());
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TPtr name16 = nameBuf16->Des();
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name16.Copy(name8);
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iName.Append(nameBuf16);
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CleanupStack::PopAndDestroy(nameBuf8);
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TPtrC8 contentPtr = line.Mid(seperatorLocation + 1);
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HBufC8* contentBuf8 = HBufC8::NewL(contentPtr.Length());
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CleanupStack::PushL(contentBuf8);
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TPtr8 content8 = contentBuf8->Des();
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content8.Copy(contentPtr);
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content8.Trim();
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HBufC* contentBuf16 = HBufC::NewL(contentPtr.Length());
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TPtr content16 = contentBuf16->Des();
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content16.Copy(content8);
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iContent.Append(contentBuf16);
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iContent8.Append(contentBuf8);
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CleanupStack::Pop(contentBuf8);
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}
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TPtrC8 theRest = fileBuffer.Mid(lineFeedLocation + 1);
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fileBuffer.Copy(theRest);
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}
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}
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}
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file.Close();
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fileServerSession.Close();
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}
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/**
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GetFieldAsInteger()
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Retrives the content of a field name and Interpret it as an integer.
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@param aFieldName
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@param aValue
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@return
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Returns an integer corresponding to the field
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*/
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EXPORT_C TInt CT_MsgUtilsConfigFileParserUtility::GetFieldAsInteger(const TDesC& aFieldName, TInt& aValue)
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{
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TInt count = iName.Count();
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for (TInt i = 0; i<count; i++)
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{
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if (iName[i]->Compare(aFieldName) == 0)
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{
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TPtrC content = iContent[i]->Des();
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TLex lex(content);
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lex.Val(aValue);
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return (KErrNone);
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}
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}
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return (KErrNotFound);
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}
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/**
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GetFieldAsString()
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Retrives the content of a field name and Interpret it as an string
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@param aFieldName
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@param aValue
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@return
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Returns an string corresponding to the field
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*/
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EXPORT_C TInt CT_MsgUtilsConfigFileParserUtility::GetFieldAsString(const TDesC& aFieldName, TPtrC& aString)
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{
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TInt count = iName.Count();
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for (TInt i = 0; i<count; i++)
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{
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if (iName[i]->Compare(aFieldName) == 0)
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{
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aString.Set(*iContent[i]);
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return (KErrNone);
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}
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}
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return (KErrNotFound);
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}
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/**
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GetFieldAsString8()
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Retrives the content of a field name and Interpret it as an 8-bit descriptor
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@param aFieldName
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@param aValue
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@return
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Returns an 8-bit descriptor corresponding to the field
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*/
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EXPORT_C TInt CT_MsgUtilsConfigFileParserUtility::GetFieldAsString8(const TDesC& aFieldName, TPtrC8& aString)
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{
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TInt count = iName.Count();
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for (TInt i = 0; i<count; i++)
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{
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if (iName[i]->Compare(aFieldName) == 0)
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{
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aString.Set(*iContent8[i]);
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return (KErrNone);
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}
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}
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return (KErrNotFound);
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}
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