sl@0: // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: // INIFILE.CPP
sl@0: // Defines the class CIniFile for accessing ini file.
sl@0: // is used by the test harness in t_Usbman_dummyCC.mmp
sl@0: // 
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0: */
sl@0: 
sl@0: #include <f32file.h>
sl@0: #include "LegacyParser.h"
sl@0: 
sl@0: const TUint KTokenSize = 32;
sl@0: _LIT(KDefaultIniFileDir,"\\");
sl@0: 
sl@0: void CIniFile::Panic(TIniPanic aPanic)
sl@0: 	{
sl@0: 	_LIT(KIniData,"CIniFile");
sl@0: 	User::Panic(KIniData,aPanic);
sl@0: 	}
sl@0: 
sl@0: CIniFile::CIniFile() 
sl@0:  :	iPtr(NULL,0)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: CIniFile::~CIniFile()
sl@0: 	{
sl@0: 	delete (TText*)iPtr.Ptr();
sl@0: 	delete iToken;
sl@0: 	delete iName;
sl@0: 	}
sl@0: 
sl@0: CIniFile* CIniFile::NewL(const TDesC& aName)
sl@0: /**
sl@0:  * Factory function for CIniFile.
sl@0:  *
sl@0:  * @param aName The name of the ini file to be used, e.g. "GPRSBTT.INI".
sl@0:  */
sl@0: 	{
sl@0: 	CIniFile* self = new(ELeave) CIniFile;
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL(aName, KDefaultIniFileDir);
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: CIniFile* CIniFile::NewL(const TDesC& aName, const TDesC& aPath)
sl@0: /**
sl@0:  * Factory function for CIniFile that allows the user to specify both filename
sl@0:  * and path
sl@0:  *
sl@0:  * @param aName The name of the ini file to be used, e.g. "GPRSBTT.INI".
sl@0:  * @param aPath The location of the file e.g. "\\system\\data\\".
sl@0:  */
sl@0:  {
sl@0:  	CIniFile* self = new(ELeave) CIniFile;
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL(aName, aPath);
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;	 	
sl@0:  }
sl@0:  
sl@0: void CIniFile::ConstructL(const TDesC& aName, const TDesC& aPath)
sl@0: /**
sl@0:  * Allocate a buffer and Read file's contents into iPtr
sl@0:  *
sl@0:  * @param aName is the name of the ini file to be used, e.g. "REFTSY.INI"
sl@0:  */
sl@0: 	{
sl@0:     iToken = HBufC::NewL(KTokenSize+2);	// 2 extra chars for []
sl@0: 
sl@0: 	RFs fs;
sl@0: 	User::LeaveIfError(fs.Connect());
sl@0: 	CleanupClosePushL(fs);
sl@0: 
sl@0: 	TFindFile ff(fs);
sl@0: 
sl@0: #ifdef BUILD_FOR_JETSTREAM
sl@0: 	// Jetstream
sl@0: 	// For security reasons ini files are in the private directory for the
sl@0: 	// comms-infras/rootserver (C32exe) process
sl@0: 	TBuf<KMaxPath> privatePath;
sl@0: 	User::LeaveIfError(fs.PrivatePath(privatePath));
sl@0: 	User::LeaveIfError(ff.FindByDir(aName, privatePath));
sl@0: #else 
sl@0: 
sl@0: 	User::LeaveIfError(ff.FindByDir(aName, aPath));
sl@0: 	
sl@0: #endif
sl@0: 
sl@0: 	iName=ff.File().AllocL();
sl@0: 	
sl@0: 	RFile file;
sl@0: 	TInt size;
sl@0: 	User::LeaveIfError(file.Open(fs,*iName,EFileStreamText|EFileRead|EFileShareReadersOnly));
sl@0: 	CleanupClosePushL(file);
sl@0: 	
sl@0: 	User::LeaveIfError(file.Size(size));
sl@0: 
sl@0: 
sl@0: 	TText* data = REINTERPRET_CAST(TText*, User::AllocL(size));
sl@0: 	iPtr.Set(data, size/sizeof(TText), size/sizeof(TText));
sl@0: 	TPtr8 dest(REINTERPRET_CAST(TUint8*,data), 0, size);
sl@0: 	User::LeaveIfError(file.Read(dest)); 
sl@0: 
sl@0: 	TUint8* ptr = REINTERPRET_CAST(TUint8*,data);
sl@0: 
sl@0: 	//
sl@0: 	// This is orderred as FEFF assuming the processor is Little Endian
sl@0: 	// The data in the file is FFFE.		PRR 28/9/98
sl@0: 	//
sl@0: 	if(size>= STATIC_CAST(TInt,sizeof(TText)) && iPtr[0]==0xFEFF)
sl@0:    		{
sl@0: 		Mem::Copy(ptr, ptr+sizeof(TText), size-sizeof(TText));
sl@0: 		iPtr.Set(data, size/sizeof(TText)-1, size/sizeof(TText)-1);
sl@0: 		}
sl@0: 	else if(size)
sl@0: 		{
sl@0: 		TText* newdata = REINTERPRET_CAST(TText*,
sl@0: 			                              User::AllocL(size*sizeof(TText)));
sl@0: 		iPtr.Set(newdata, size, size);
sl@0: 		TInt i;
sl@0: 		for(i=0 ; i<size ; ++i)
sl@0: 			iPtr[i]=ptr[i];
sl@0: 		delete data;
sl@0: 		}
sl@0: 
sl@0: 	CleanupStack::PopAndDestroy(); // file
sl@0: 	CleanupStack::PopAndDestroy(); // fs
sl@0: 	}
sl@0: 
sl@0: TBool CIniFile::FindVar(const TDesC &aSection,
sl@0: 						const TDesC &aVarName,
sl@0: 						TPtrC &aResult)
sl@0: //
sl@0: // Find a variable's value given a section name and a var name
sl@0: //
sl@0: 	{
sl@0: 	__ASSERT_DEBUG(aSection.Length()<=(TInt)KTokenSize,Panic(ESectionNameTooBig));
sl@0: 	__ASSERT_DEBUG(aVarName.Length()<=(TInt)KTokenSize,Panic(EVarNameTooBig));
sl@0: 
sl@0: 	TPtr sectionToken=iToken->Des();
sl@0: 	_LIT(KSectionTokenString,"[%S]");
sl@0: 	sectionToken.Format(KSectionTokenString,&aSection);
sl@0: 	TInt sectionStart=iPtr.Find(sectionToken);
sl@0: 	TInt ret = ETrue;
sl@0: 	if (sectionStart==KErrNotFound)
sl@0: 		ret = EFalse;
sl@0: 	else
sl@0: 		{		
sl@0: 		TPtrC section=iPtr.Mid(sectionStart);
sl@0: 		sectionStart+=section.Find(TPtrC(_S("]")));
sl@0: 		if (sectionStart==KErrNotFound)
sl@0: 			ret = EFalse;
sl@0: 		else
sl@0: 			{
sl@0: 			sectionStart++;
sl@0: 			section.Set(iPtr.Mid(sectionStart));
sl@0: 			
sl@0: 			TInt sectionEnd=section.Find(TPtrC(_S("[")));
sl@0: 			if (sectionEnd==KErrNotFound)
sl@0: 				sectionEnd=iPtr.Length()-sectionStart;
sl@0: 			else
sl@0: 				sectionEnd--;
sl@0: 			section.Set(iPtr.Mid(sectionStart,sectionEnd));
sl@0: 			TPtr varToken=iToken->Des();
sl@0: 			_LIT(KVarTokenString,"%S=");
sl@0: 			varToken.Format(KVarTokenString,&aVarName);
sl@0: 			TInt pos=section.Find(varToken);
sl@0: 			if (pos==KErrNotFound)
sl@0: 				ret = EFalse;
sl@0: 			else
sl@0: 				{
sl@0: 				// 'lex' points at the start of the data
sl@0: 				TPtrC lex(section.Mid(pos));
sl@0: 				TInt startpos = lex.Locate(TChar('='));
sl@0: 				startpos++; // startpos points immediately after the =.
sl@0: 				while ( TChar(lex[startpos]).IsSpace() )
sl@0: 					startpos++; // skip to start of data
sl@0: 				TInt endpos = lex.Locate(TChar('\n')); // assumes \n is after =.
sl@0: 				if ( endpos == KErrNotFound ) // may not be \n on last line
sl@0: 					endpos = section.Length()-1;
sl@0: 				aResult.Set(lex.Mid(startpos).Ptr(),endpos-startpos-1);
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: TBool CIniFile::FindVar(const TDesC &aSection,const TDesC &aVarName,
sl@0: 						TInt &aResult)
sl@0: 	{
sl@0: 	TInt ret = EFalse;
sl@0: 	TPtrC ptr(NULL,0);
sl@0: 	if (FindVar(aSection,aVarName,ptr))
sl@0: 		{
sl@0: 		TLex lex(ptr);
sl@0: 		if (lex.Val(aResult)==KErrNone)
sl@0: 			ret = ETrue;
sl@0: 		}
sl@0: 
sl@0: 	return ret;
sl@0: 	}
sl@0: 
sl@0: //
sl@0: // End of file