// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Symbian Foundation License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// @file ctlbsconfigreader.cpp

// This is the Cpp file which contains the ini file configuration reader classes

// 

//

// User includes

#include "ctlbsconfigreader.h"

// Epoc includes

#include <f32file.h>

// Lbs includes

#include <lbsclasstypes.h>

#include <lbssatellite.h>

// Literals Used

_LIT8(KNotANumber, "nan");

CConfigReaderBase::CConfigReaderBase(const TDesC& aConfigFileName, const TDesC& aConfigSection) : iConfigFileName(aConfigFileName), iConfigSection(aConfigSection)

	{	

	}

CConfigReaderBase::~CConfigReaderBase()

	{

	}

void CConfigReaderBase::AppendFieldChar(TUint aChar)

	{

	if (iSentence.Length() >= iSentence.MaxLength())

		{

		return;

		}

	iSentence.Append(aChar);

	// If aChar is not a field delimiter then just add it to buffer and return

	if (aChar != ',' && aChar != '*')

		{

		iFieldLength++;

		return;

		}

	// Got a field delimiter increase the number of fields

	// aChar == ',' || aChar == '*'

	TPtrC8 thisField = iSentence.Mid(iFieldStart, iFieldLength);

	iFields[iNumFields].Set(thisField);

	iNumFields++;

	// Next field starts here

	iFieldStart  = iSentence.Length();

	iFieldLength = 0;

	}

void CConfigReaderBase::ProcessStringL(const TDesC8& aData)

	{

	TInt length = aData.Length();

	for (TInt index = 0; index < length; index++)

		{

		TUint ch = aData[index];

		switch(iReadState)

			{

			// Keep reading until a section is found.

			case EStartSection:

				{

				if (ch == '[')

					{

					iReadSection.SetLength(0);

					iReadState = EProcessSection;

					}

				break;

				}

			// Found a section, keep reading until end of section found.

			case EProcessSection:

				{

				// End of section, check if it's ours.

				if (ch == ']')

					{

					// Need to convert from TBuf8 to TBuf for the comparision.

					TBuf<KMaxSentence> cmpSection;

					cmpSection.Copy(iReadSection);

					// Not our section.

					if (iConfigSection.Compare(cmpSection) != 0)

						{

						iReadState = EStartSection;

						}

					// Is our section.

					else

						{					

						iReadState = EStartSentence;

						}

					}

				else

					{

					iReadSection.Append(ch);

					}

				break;

				}

			case EStartSentence:

				{

				//

				if (ch == '$')

					{

					iReadState = EProcessSentence;

					iSentence.SetLength(0);

					iNumFields   = 0;

					iFieldStart  = 0;

					iFieldLength = 0;

					for (TInt i = 0; i < KMaxFields; i++)

						{

						iFields[i].Set(KNullDesC8);

						}

					}

				// If we find a section we know to stop reading sentences for our section

				// and we let the other section be handled, but it will not match ours.

				else if (ch == '[')

					{

					iReadSection.SetLength(0);

					iReadState = EProcessSection;

					}

				break;

				}

			case EProcessSentence:

				{

				AppendFieldChar(ch); // calling this don't you end up with a * in the field, does it matter

				if (ch == '*')

					{

					iReadState = EStartSentence;

					HandleSentenceL();

					}			

				break;

				}

			}

		}

	}

void CConfigReaderBase::ExtractValueL(const TPtrC8& aField, TInt& aValue)

	{

	if (aField.Length() != 0)

		{

		TLex8 lex(aField);

		TInt err = lex.Val(aValue);

		User::LeaveIfError(err);

		}

	}

void CConfigReaderBase::ExtractValueL(const TPtrC8& aField, TReal32& aValue)

	{

	TRealX nan;

	nan.SetNaN();

	aValue = nan;

	if (aField.Length() != 0)

		{

		if (aField.CompareF(KNotANumber))

			{

			TLex8 lex(aField);

			TInt err = lex.Val(aValue);

			User::LeaveIfError(err);

			}

		}

	}

void CConfigReaderBase::ExtractValueL(const TPtrC8& aField, TReal64& aValue)

	{

	TRealX nan;

	nan.SetNaN();

	aValue = nan;

	if (aField.Length() != 0)

		{

		if (aField.CompareF(KNotANumber))

			{

			TLex8 lex(aField);

			TInt err = lex.Val(aValue);

			User::LeaveIfError(err);

			}

		}

	}

/*

void CConfigReaderBase::ExtractDegreesL(const TPtrC8& aField, TReal64& aDegrees)

	{

	TRealX nan;

	nan.SetNaN();

	aDegrees = nan;

	if (aField.Length() != 0)

		{

		TLex8 lex(aField);

		TInt err = lex.Val(aDegrees);

		User::LeaveIfError(err);

		ConvertDecimalMinutesToDecimalDegrees(aDegrees);

		}

	}

*/

void CConfigReaderBase::ProcessL()

	{

	if (iConfigFileName.Length() == 0)

		{

		User::LeaveIfError(KErrArgument);

		}

	RFs fs;

	User::LeaveIfError(fs.Connect());

	CleanupClosePushL(fs);	

	RFile iniFile;

	User::LeaveIfError(iniFile.Open(fs, iConfigFileName, EFileRead|EFileShareReadersOnly));

	CleanupClosePushL(iniFile);

	TBuf8<KMaxIniFileBuffer> buf;

	// Loop until EOF.

	User::LeaveIfError(iniFile.Read(buf));

	while (buf.Length() > 0)

		{

		// Process data read from file.

		ProcessStringL(buf);

		// Refresh buffer from file.

		User::LeaveIfError(iniFile.Read(buf));

		}

	CleanupStack::PopAndDestroy(2, &fs);	// iniFile, fs.

	}

/*********************** Update Info Reader ************************/

CUpdateConfigReader* CUpdateConfigReader::NewL(const TDesC &aConfigFileName, const TDesC& aConfigSection, RPointerArray<TLbsModuleUpdateItem>& aUpdateArr)

	{

	return new (ELeave) CUpdateConfigReader(aConfigFileName, aConfigSection, aUpdateArr);

	}

CUpdateConfigReader::CUpdateConfigReader(const TDesC &aConfigFileName, const TDesC& aConfigSection, RPointerArray<TLbsModuleUpdateItem>& aUpdateArr) : CConfigReaderBase(aConfigFileName, aConfigSection), iUpdateArr(aUpdateArr)

	{

	}

void CUpdateConfigReader::HandleSentenceL()

	{

	// Not a update sentence, ignore all other valid sentences.

	if (	(iNumFields == EUpdateType) || (iFields[EUpdateType].Compare(_L8("update")) != 0) )

		{

		return;

		}

	// Determine the number of times to repeat the update.

	TInt repeat = 1;

	if (iFields[EUpdateRepeat].Length() != 0)

		{

		ExtractValueL(iFields[1], repeat);

		}

	// Determine the number of measurements for each update.

	TInt numOfMeasurements = 0;

	if (iFields[ENumOfMeasurements].Length() != 0)

		{

		ExtractValueL(iFields[ENumOfMeasurements], numOfMeasurements);	// make this member, then set up this + error in the default + extract maybe

		}

	// Add repeat items to the pos info array.

	for (TInt i = 0; i < repeat; i++)

	{

		TPositionGpsMeasurementInfo measureInfo;

		TPositionGpsMeasurementData measureData;

		// Alloc a update item.

		iUpdate = new(ELeave) TLbsModuleUpdateItem();

		// Set measurement info.

		for (TInt j = 0; j < numOfMeasurements; j++)

			{

			measureData.SetSatelliteId(j + 1);

			measureData.SetCarrierNoiseRatio((j+1) + 1);

			measureData.SetDoppler((j+1) + 2);

			measureData.SetWholeGpsChips((j+1) + 3);

			measureData.SetFractionalGpsChips((j+1) + 4);

			measureData.SetMultiPathIndicator(TPositionGpsMeasurementData::EMultiPathLow);

			measureData.SetPseudoRangeRmsError((j+1) + 5);

			User::LeaveIfError(measureInfo.AppendMeasurementData(measureData));

			}

		measureInfo.SetGpsTimeOfWeek(i + 1000);

		iUpdate->SetMeasurement(measureInfo);

		// Set position update.		

		// Optional fields are present fill out pos info based on them.

		if (iFields[3].Length() != 0)

			{

			DefaultData();	// This will ensure the pos info items are set to a default value for any incomplete sentences.

			ExtractDataL();

			}

		// Otherwise use default values.			

		else

			{

			DefaultData();

			}

		// Optional error value is present. Set update error.

		TInt updateErr = KErrNone;

		if (iFields[EUpdateErr].Length() != 0)

			{

			ExtractValueL(iFields[EUpdateErr], updateErr);		

			}

		iUpdate->SetError(updateErr);

		// Optional time delay(could be negative)

		TInt updateDelay = 0;

		if (iFields[EUpdateDelay].Length() != 0)

			{

			ExtractValueL(iFields[EUpdateDelay], updateDelay);

			}

		iUpdate->SetDelay(updateDelay);

		// Add to array, and reset pointer.

		iUpdateArr.AppendL(iUpdate);

		iUpdate = NULL;

		}	

	}

void CUpdateConfigReader::ExtractDataL()

	{

	// Access the position info from the update structure.

	TPositionSatelliteInfo	posInfo = iUpdate->Position();

	TPosition position;

	// Process fields.

	TReal64 latitude;

	TReal64 longitude;

	TReal32 altitude;

	TReal32 horzAccuracy;

	TReal32 vertAccuracy;

	ExtractValueL(iFields[EPosLatitude], latitude);

	ExtractValueL(iFields[EPosLongitude], longitude);

	ExtractValueL(iFields[EPosAltitude], altitude);

	ExtractValueL(iFields[EPosHorzAccuracy], horzAccuracy);

	ExtractValueL(iFields[EPosVertAccuracy], vertAccuracy);

	// Set values.

	position.SetCoordinate(latitude, longitude, altitude);

	position.SetAccuracy(horzAccuracy, vertAccuracy);

	position.SetCurrentTime();

	posInfo.SetPosition(position);

	iUpdate->SetPosition(posInfo);

	}

void CUpdateConfigReader::DefaultData()

	{

	// Access the position info from the update structure.

	TPositionSatelliteInfo	posSatalliteInfo = iUpdate->Position();

	// Fill out default position data.

	TPosition position;

	position.SetCoordinate(DEFAULT_NOTIFY_POS_UPDATE_LATITUDE, DEFAULT_NOTIFY_POS_UPDATE_LONGITUDE, DEFAULT_NOTIFY_POS_UPDATE_ALTITUDE);

	position.SetAccuracy(DEFAULT_NOTIFY_POS_UPDATE_HORIZONTAL_ACCURACY, DEFAULT_NOTIFY_POS_UPDATE_VERTICAL_ACCURACY);

	position.SetCurrentTime();

	posSatalliteInfo.SetPosition(position);

	// Fill out default course data.

	TCourse course;

	course.SetSpeed(DEFAULT_NOTIFY_POS_UPDATE_SPEED);

	course.SetHeading(DEFAULT_NOTIFY_POS_UPDATE_HEADING);

	course.SetSpeedAccuracy(DEFAULT_NOTIFY_POS_UPDATE_SPEED_ACCURACY);

	course.SetHeadingAccuracy(DEFAULT_NOTIFY_POS_UPDATE_HEADING_ACCURACY);

	posSatalliteInfo.SetCourse(course);

	// Fill out default satalliteInfo.

	TSatelliteData satellite;

	satellite.SetSatelliteId(DEFAULT_NOTIFY_POS_UPDATE_SATELLITE_ID1);

	satellite.SetAzimuth(DEFAULT_NOTIFY_POS_UPDATE_AZIMUTH1);

	satellite.SetElevation(DEFAULT_NOTIFY_POS_UPDATE_ELEVATION1);

	satellite.SetIsUsed(DEFAULT_NOTIFY_POS_UPDATE_IS_USED1);

	satellite.SetSignalStrength(DEFAULT_NOTIFY_POS_UPDATE_SIGNAL_STRENGTH1);

	posSatalliteInfo.AppendSatelliteData(satellite);

	satellite.SetSatelliteId(DEFAULT_NOTIFY_POS_UPDATE_SATELLITE_ID2);

	satellite.SetAzimuth(DEFAULT_NOTIFY_POS_UPDATE_AZIMUTH2);

	satellite.SetElevation(DEFAULT_NOTIFY_POS_UPDATE_ELEVATION2);

	satellite.SetIsUsed(DEFAULT_NOTIFY_POS_UPDATE_IS_USED2);

	satellite.SetSignalStrength(DEFAULT_NOTIFY_POS_UPDATE_SIGNAL_STRENGTH2);

	posSatalliteInfo.AppendSatelliteData(satellite);

	iUpdate->SetPosition(posSatalliteInfo);

	}

/*********************** Position Info Reader ************************/

CPosInfoConfigReader* CPosInfoConfigReader::NewL(const TDesC &aConfigFileName, const TDesC& aConfigSection, RPointerArray<TAny>& aPosInfoArr)

	{

	return new (ELeave) CPosInfoConfigReader(aConfigFileName, aConfigSection, aPosInfoArr);

	}

CPosInfoConfigReader::CPosInfoConfigReader(const TDesC &aConfigFileName, const TDesC& aConfigSection, RPointerArray<TAny>& aPosInfoArr) : CConfigReaderBase(aConfigFileName, aConfigSection), iPosInfoArr(aPosInfoArr)

	{

	}

void CPosInfoConfigReader::HandleSentenceL()

	{

	// Not a position info sentence, ignore all other valid sentences.

	if (	(iNumFields == 0) || (

			(iFields[0].Compare(_L8("position")) != 0) &&	

			(iFields[0].Compare(_L8("course")) != 0) &&

			(iFields[0].Compare(_L8("satellite")) != 0) ))

		{

		return;

		}

	// Determine the number of times to repeat the pos info.

	TInt repeat = 1;

	if (iFields[1].Length() != 0)

		{

		ExtractValueL(iFields[1], repeat);

		}

	// Add repeat items to the pos info array.

	for (TInt i = 0; i < repeat; i++)

	{

		// Alloc a Satellite type info.

		iPosInfo = new(ELeave) TPositionSatelliteInfo();

		// Optional fields are present fill out pos info based on them.

		if (iFields[2].Length() != 0)

			{

			DefaultData();	// This will ensure the pos info items are set to a default value for any incomplete sentences.

			ExtractDataL();

			}

		// Otherwise use default values.			

		else

			{

			DefaultData();

			}

		// Add to array, and reset pointer.

		User::LeaveIfError(iPosInfoArr.Append(iPosInfo));

		iPosInfo = NULL;

		}	

	}

// i think we will always have to call default to ensure we set things for missing fields

void CPosInfoConfigReader::ExtractDataL()

	{

	// TODO: we need to support something like this, ie $position,1,10,2.3* which is lat, long only

	// I think it will because extract value deals with empty strings

	if (iPosInfo->PositionClassType() & EPositionInfoClass)

		{

		TPosition position;

		TPositionInfo& posInfo = static_cast<TPositionInfo&>(*iPosInfo);

		TReal64 latitude;