/*
 * FileReaderCDF.cc
 *
 *  Created on: Nov 24, 2014
 *  Author: AKKA
 */

#include "FileReaderCDF.hh"

#include "ParameterManager.hh"
#include "LocalFileInterfaceConfig.hh"
#include "TimeUtil.hh"

#include <boost/shared_ptr.hpp>

namespace AMDA {
namespace LocalFileInterface {

FileReaderCDF::FileReaderCDF() : _cdfid(NULL), _workingBuffers(new CDFWorkingBuffers)
{
}

FileReaderCDF::~FileReaderCDF()
{
}

bool FileReaderCDF::open(std::string filePath)
{
	boost::mutex::scoped_lock scoped_lock(AMDA::Parameters::ParameterManager::mutexCDFLib);

	if (isOpened())
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::open - A file is already opened");
		return false;
	}

	CDFstatus status = CDFopenCDF(filePath.c_str(), &_cdfid);

	return (status == CDF_OK);
}

bool FileReaderCDF::close(void)
{
	boost::mutex::scoped_lock scoped_lock(AMDA::Parameters::ParameterManager::mutexCDFLib);

	if (isOpened())
	{
		CDFstatus status = CDFcloseCDF(_cdfid);

		if (status == CDF_OK)
			_cdfid = NULL;
	}

	return (_cdfid == NULL);
}

bool FileReaderCDF::isOpened(void)
{
	return (_cdfid != NULL);
}

std::string FileReaderCDF::getTimeParamId(void)
{
	boost::mutex::scoped_lock scoped_lock(AMDA::Parameters::ParameterManager::mutexCDFLib);

	std::string result = "";

	//search in rVariables
	long numrVars;
	CDFstatus status = CDFgetNumrVars (_cdfid, &numrVars);

	if (status == CDF_OK)
	{
		for (long i = 0; i < numrVars; ++i)
		{
			CDFVarInfo varInfo;
			status = CDFvarInquire(_cdfid, i, varInfo._name, &varInfo._dataType,
					&varInfo._numElts, &varInfo._recVary, varInfo._dimVarys);
			if (status == CDF_OK)
			{
				if ((varInfo._dataType == CDF_EPOCH) || (varInfo._dataType == CDF_EPOCH16) || (varInfo._dataType == CDF_TIME_TT2000))
				{
					result = varInfo._name;
					return result;
				}
			}
		}
	}

	//search in zVariables
	long numzVars;
	status = CDFgetNumzVars (_cdfid, &numzVars);

	if (status == CDF_OK)
	{
		for (long i = 0; i < numzVars; ++i)
		{
			CDFVarInfo varInfo;
			status = CDFinquirezVar(_cdfid, i, varInfo._name, &varInfo._dataType,
					&varInfo._numElts, &varInfo._numDims, varInfo._dimSizes,
					&varInfo._recVary, varInfo._dimVarys);
			if (status == CDF_OK)
			{
				if ((varInfo._dataType == CDF_EPOCH) || (varInfo._dataType == CDF_EPOCH16) || (varInfo._dataType == CDF_TIME_TT2000))
				{
					result = varInfo._name;
					return result;
				}
			}
		}
	}

	return result;
}

bool FileReaderCDF::getParamInfo(std::string& paramId, LocalParamType& paramType, int& dim1Size, int& dim2Size)
{
	boost::mutex::scoped_lock scoped_lock(AMDA::Parameters::ParameterManager::mutexCDFLib);

	paramType = LocalParamType::TYPE_UNKNOWN;
	dim1Size = 0;
	dim2Size = 0;

	//get CDF var info
	CDFVarInfo varInfo;
	if (!getCDFVarInfo(paramId, varInfo))
		return false;

	//get ParamType in relation to the CDF var type
	switch (varInfo._dataType)
	{
	case CDF_REAL4 :
	case CDF_FLOAT :
		paramType = LocalParamType::TYPE_FLOAT;
		break;
	case CDF_REAL8 :
	case CDF_DOUBLE :
	case CDF_EPOCH :
		paramType = LocalParamType::TYPE_DOUBLE;
		break;
	case CDF_EPOCH16 :
		paramType = LocalParamType::TYPE_EPOCH16;
		break;
	case CDF_BYTE :
	case CDF_INT1 :
	case CDF_UINT1 :
	case CDF_INT2 :
	case CDF_UINT2 :
		paramType = LocalParamType::TYPE_SHORT;
		break;
	case CDF_INT4 :
	case CDF_UINT4 :
		paramType = LocalParamType::TYPE_INT;
		break;
	case CDF_TIME_TT2000 :
	case CDF_INT8 :
		paramType = LocalParamType::TYPE_TT2000;
		break;
	case CDF_CHAR :
	case CDF_UCHAR :
	default :
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamInfo - Unknown data type");
		return false;
	}

	//set param size
	if (varInfo._numDims > 2)
	{
		dim1Size = 0;
		dim2Size = 0;
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamInfo - Unknown dimension");
		return false;
	}
	else if (varInfo._numDims == 2)
	{
		//Dimensions for a Tab2D
		dim1Size = varInfo._dimSizes[0];
		dim2Size = varInfo._dimSizes[1];
	}
	else if (varInfo._numDims == 1)
	{
		//Dimensions for a Vector
		dim1Size = varInfo._dimSizes[0];
		dim2Size = 1;
	}
	else
	{
		//Dimensions for a Scalar
		dim1Size = 1;
		dim2Size = 1;
	}

	return true;
}

bool FileReaderCDF::getCDFVarInfo(std::string paramName, CDFVarInfo& varInfo)
{
	if (paramName.empty())
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFVarInfo - Empty param name");
		return false;
	}

	if (paramName.size() >= CDF_VAR_NAME_LEN256)
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFVarInfo - Param name too large");
		return false;
	}

	//reset info structure
	memset(&varInfo,0,sizeof(CDFVarInfo));

	//confirm variable existence
	memcpy(varInfo._name,paramName.c_str(),paramName.size()*sizeof(char));
	varInfo._name[paramName.size()] = '\0';

	varInfo._num = CDFgetVarNum(_cdfid,varInfo._name);

	if (varInfo._num < 0)
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFVarInfo - Cannot find variable");
		return false;
	}

	//Is it a zVariable?
	CDFstatus status = CDFconfirmzVarExistence(_cdfid,varInfo._name);

	bool isZVar = (status == CDF_OK);

	if (isZVar)
	{
		//get info about a zVariable
		varInfo._type = CDFVT_Z;

		status = CDFinquirezVar(_cdfid, varInfo._num, varInfo._name, &varInfo._dataType,
				&varInfo._numElts, &varInfo._numDims, varInfo._dimSizes, &varInfo._recVary,
				varInfo._dimVarys);

		if (status != CDF_OK)
		{
			LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFVarInfo - Error to call CDFinquirezVar");
			return false;
		}

		status = CDFgetzVarMaxWrittenRecNum(_cdfid, varInfo._num, &varInfo._maxRecNum);

		if (status != CDF_OK)
		{
			LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFVarInfo - Error to call CDFgetzVarMaxWrittenRecNum");
			return false;
		}

		status = CDFgetDataTypeSize(varInfo._dataType,&varInfo._numBytes);

		if (status != CDF_OK)
		{
			LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFVarInfo - Error to call CDFgetDataTypeSize");
			return false;
		}
	}
	else
	{
		//get info about a rVariable
		varInfo._type = CDFVT_R;

		status = CDFvarInquire(_cdfid, varInfo._num, varInfo._name,
				&varInfo._dataType, &varInfo._numElts, &varInfo._recVary, varInfo._dimVarys);

		if (status != CDF_OK)
		{
			LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFVarInfo - Error to call CDFvarInquire");
			return false;
		}

		long encoding;
		long majority;
		long numVars;
		long numAttrs;
		status = CDFinquire (_cdfid, &varInfo._numDims, varInfo._dimSizes, &encoding, &majority,
				&varInfo._maxRecNum, &numVars, &numAttrs);

		if (status != CDF_OK)
		{
			LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFVarInfo - Error to call CDFinquire");
			return false;
		}

		status = CDFgetDataTypeSize(varInfo._dataType,&varInfo._numBytes);

		if (status != CDF_OK)
		{
			LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFVarInfo - Error to call CDFgetDataTypeSize");
			return false;
		}
	}

	return true;
}

int FileReaderCDF::getRecordIndex(std::string& timeId, double time)
{
	LOG4CXX_DEBUG(gLogger, "FileReaderCDF::getRecordIndex");

	boost::mutex::scoped_lock scoped_lock(AMDA::Parameters::ParameterManager::mutexCDFLib);

	//get corresponding epoch time
	double timeEPOCH = timeStampToEPOCHTime(time);

	//get all time data
	long nbRec;
	long dimSize;
	long dataType;
	long numBytes;

	if (!getCDFData(timeId, 0, CDFWorkingBuffers::BufferType::BUFFER_TIME,
			dataType, numBytes, nbRec, dimSize))
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getRecordIndex - Cannot get time var data");
		return -1;
	}

	if ((dataType != CDF_EPOCH) && (dataType != CDF_EPOCH16) && (dataType != CDF_TIME_TT2000))
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getRecordIndex - Not a time var " << timeId);
		return -1;
	}

	//search nearest record
	for (long i = 0; i < nbRec; ++i)
	{
		double crtTime;
		switch (dataType) {
			case CDF_EPOCH :
				if (!extractDouble(CDFWorkingBuffers::BufferType::BUFFER_TIME, i, 0, dimSize,dataType,numBytes,crtTime))
				{
					LOG4CXX_ERROR(gLogger, "FileReaderCDF::getRecordIndex - Error to extract time data");
					return -1;
				}
				break;
			case CDF_EPOCH16 :
				double crtEpoch16Time[2];
				if (!extractEpoch16(CDFWorkingBuffers::BufferType::BUFFER_TIME, i, 0, dimSize,dataType,numBytes,crtEpoch16Time))
				{
					LOG4CXX_ERROR(gLogger, "FileReaderCDF::getRecordIndex - Error to extract time data");
					return -1;
				}
				crtTime = epoch16ToEpochTime(crtEpoch16Time);
				break;
			case CDF_TIME_TT2000 :
				long long crtTT2000Time;
				if (!extractTT2000(CDFWorkingBuffers::BufferType::BUFFER_TIME, i, 0, dimSize,dataType,numBytes,crtTT2000Time))
				{
					LOG4CXX_ERROR(gLogger, "FileReaderCDF::getRecordIndex - Error to extract time data");
					return -1;
				}
				crtTime = tt2000ToEpochTime(crtTT2000Time);
				break;
			default:
				LOG4CXX_ERROR(gLogger, "FileReaderCDF::getRecordIndex - Error to extract time data");
				return -1;
		}
		if (timeEPOCH <= crtTime)
			return i;
	}

	LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFVarInfo - Cannot get record index");
	return -1;
}

FileReaderStatus FileReaderCDF::getParamPacketData(std::string& timeId, std::string& paramId,
		int recordIndex, double stopTime, LocalParamDataPacket *packet)
{
	LOG4CXX_DEBUG(gLogger, "FileReaderCDF::getParamPacketData");

	boost::mutex::scoped_lock scoped_lock(AMDA::Parameters::ParameterManager::mutexCDFLib);


	//get the size of one value of a data in the packet
	int packetValueSize;
	switch (packet->getType())
	{
		case LocalParamType::TYPE_FLOAT:
			packetValueSize = sizeof(float);
			break;
		case LocalParamType::TYPE_DOUBLE:
			packetValueSize = sizeof(double);
			break;
		case LocalParamType::TYPE_SHORT:
			packetValueSize = sizeof(short);
			break;
		case LocalParamType::TYPE_INT:
			packetValueSize = sizeof(int);
			break;
		default:
			LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - ParamType not implemented for CDF format");
			return FRS_ERROR;
	}

	//get time data
	long nbTimeRec;
	long dimTimeSize;
	long dataTimeType;
	long numTimeBytes;
	if (!getCDFData(timeId, recordIndex, CDFWorkingBuffers::BufferType::BUFFER_TIME, dataTimeType, numTimeBytes, nbTimeRec, dimTimeSize))
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Cannot get time var data for " << timeId);
		return FRS_ERROR;
	}

	if ((dataTimeType != CDF_EPOCH) && (dataTimeType != CDF_EPOCH16) && (dataTimeType != CDF_TIME_TT2000))
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Bad time format " << timeId);
		return FRS_ERROR;
	}

	//get data
	long nbRec;
	long dimSize;
	long dataType;
	long numBytes;
	if (!getCDFData(paramId, recordIndex, CDFWorkingBuffers::BufferType::BUFFER_DATA, dataType, numBytes, nbRec, dimSize))
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Cannot get var data for " << paramId);
		return FRS_ERROR;
	}

	//check dimension integrity
	if (dimSize != packet->getDimsSize())
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Incompatibility between dim size of the packet and the CDF var");
		return FRS_ERROR;
	}

	//alloc buffer for one record of the packet
	_workingBuffers->reallocBuffer(CDFWorkingBuffers::BufferType::BUFFER_PACKETREC,
			packetValueSize*packet->getDimsSize());

	for (int i = 0; i < nbTimeRec; ++i)
	{
		//time
		double crtTime;
		double crtTimeEPOCH;
		switch (dataTimeType) {
			case CDF_EPOCH :
				if (!extractDouble(CDFWorkingBuffers::BufferType::BUFFER_TIME, i, 0,
						dimTimeSize,dataTimeType,numTimeBytes,crtTimeEPOCH))
				{
					LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Error to extract time data");
					return FRS_ERROR;
				}
				break;
			case CDF_EPOCH16 :
				double crtTimeEPOCH16[2];
				if (!extractEpoch16(CDFWorkingBuffers::BufferType::BUFFER_TIME, i, 0,
						dimTimeSize,dataTimeType,numTimeBytes,crtTimeEPOCH16))
				{
					LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Error to extract time data");
					return FRS_ERROR;
				}
				crtTimeEPOCH = epoch16ToEpochTime(crtTimeEPOCH16);
				break;
			case CDF_TIME_TT2000 :
				long long crtTimeTT2000;
				if (!extractTT2000(CDFWorkingBuffers::BufferType::BUFFER_TIME, i, 0,
						dimTimeSize,dataTimeType,numTimeBytes,crtTimeTT2000))
				{
					LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Error to extract time data");
					return FRS_ERROR;
				}
				crtTimeEPOCH = tt2000ToEpochTime(crtTimeTT2000);
				break;
			default:
				LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Error to extract time data");
				return FRS_ERROR;
		}

		crtTime = epochTimeToTimeStamp(crtTimeEPOCH);

		//check if stop time is reached
		if (crtTime > stopTime)
			return FRS_FINISH;

		bool packetFull;

		if (i >= nbRec)
		{
			//add record data
			if (!packet->addData(crtTime,
					_workingBuffers->getBuffer(CDFWorkingBuffers::BufferType::BUFFER_PACKETREC),
					packetFull))
			{
				if (packetFull)
					return FRS_MORE;
				LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Error to add data in packet");
				return FRS_ERROR;
			}
			continue;
		}

		for (int j = 0; j < dimSize; ++j)
		{
			switch (packet->getType())
			{
				case LocalParamType::TYPE_FLOAT:
				{
					//extract and copy value in the buffer
					float f;
					if (!extractFloat(CDFWorkingBuffers::BufferType::BUFFER_DATA, i, j,
							dimSize, dataType, numBytes, f))
					{
						LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Error to extract a data");
						return FRS_ERROR;
					}
					void* p = (void*)((intptr_t)_workingBuffers->getBuffer(CDFWorkingBuffers::BufferType::BUFFER_PACKETREC) + j*packetValueSize);
					memcpy(p,&f,sizeof(float));
				}
				break;
				case LocalParamType::TYPE_DOUBLE:
				{
					//extract and copy value in the buffer
					double d;
					if (!extractDouble(CDFWorkingBuffers::BufferType::BUFFER_DATA, i, j,
							dimSize, dataType, numBytes, d))
					{
						LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Error to extract a data");
						return FRS_ERROR;
					}
					void* p = (void*)((intptr_t)_workingBuffers->getBuffer(CDFWorkingBuffers::BufferType::BUFFER_PACKETREC) + j*packetValueSize);
					memcpy(p,&d,sizeof(double));
				}
				break;
				case LocalParamType::TYPE_SHORT:
				{
					//extract and copy value in the buffer
					short s;
					if (!extractShort(CDFWorkingBuffers::BufferType::BUFFER_DATA, i, j,
							dimSize, dataType, numBytes, s))
					{
						LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Error to extract a data");
						return FRS_ERROR;
					}
					void* p = (void*)((intptr_t)_workingBuffers->getBuffer(CDFWorkingBuffers::BufferType::BUFFER_PACKETREC) + j*packetValueSize);
					memcpy(p,&s,sizeof(short));
				}
				break;
				case LocalParamType::TYPE_INT:
				{
					//extract and copy value in the buffer
					int ii;
					if (!extractInt(CDFWorkingBuffers::BufferType::BUFFER_DATA, i, j,
							dimSize, dataType, numBytes, ii))
					{
						LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Error to extract a data");
						return FRS_ERROR;
					}
					void* p = (void*)((intptr_t)_workingBuffers->getBuffer(CDFWorkingBuffers::BufferType::BUFFER_PACKETREC) + j*packetValueSize);
					memcpy(p,&ii,sizeof(int));
				}
				break;
				default:
					LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - ParamType not implemented for CDF format");
					return FRS_ERROR;
			}
		}

		//add data record in the packet
		if (!packet->addData(crtTime,
				_workingBuffers->getBuffer(CDFWorkingBuffers::BufferType::BUFFER_PACKETREC),
				packetFull))
		{
			if (packetFull)
				return FRS_MORE;
			LOG4CXX_ERROR(gLogger, "FileReaderCDF::getParamPacketData - Error to add data in packet");
			return FRS_ERROR;
		}
	}

	return FRS_EOF;
}

double FileReaderCDF::timeStampToEPOCHTime(double timeStamp)
{
	std::stringstream isoTime;
	TimeUtil::formatTimeDateInIso(timeStamp, isoTime);

	std::string timeString = isoTime.str();

	char timeChar[EPOCH4_STRING_LEN+1];
	memset(timeChar,0,(EPOCH4_STRING_LEN+1)*sizeof(char));

	if ((timeString.size() > 0) && (timeString.size() <= EPOCH4_STRING_LEN))
			memcpy(timeChar,timeString.c_str(),timeString.size()*sizeof(char));

	return parseEPOCH4(timeChar);
}

double FileReaderCDF::epochTimeToTimeStamp(double epochTime)
{
	char isoTime[EPOCH4_STRING_LEN+1];
	encodeEPOCH4(epochTime,isoTime);
	return TimeUtil::readTimeInIso(isoTime);
}

double FileReaderCDF::epoch16ToEpochTime(double epoch16Time[])
{
	long year, month, day, hour, minute, second, msec, microsec, nanosec, picosec;
	EPOCH16breakdown(epoch16Time, &year, &month, &day, &hour, &minute, &second, &msec, &microsec, &nanosec, &picosec);
	return computeEPOCH(year, month, day, hour, minute, second, msec);
}

double FileReaderCDF::tt2000ToEpochTime(long long tt2000Time)
{
	return CDF_TT2000_to_UTC_EPOCH(tt2000Time);
}

bool FileReaderCDF::getCDFData(std::string& varId, long startRec,
		CDFWorkingBuffers::BufferType bufferType,
		long& dataType, long& numBytes, long& nbRec, long& dimSize)
{
	nbRec = 0;
	dimSize = 0;

	CDFVarInfo varInfo;
	if (!getCDFVarInfo(varId, varInfo))
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFData - Cannot get param info " << varId);
		return false;
	}

	dataType = varInfo._dataType;
	numBytes = varInfo._numBytes;

	if (varInfo._numElts > 1)
	{
		//only possible if CDF_CHAR
		//not implemented (CDF_CHAR variable is not a valid variable for the ParamGet)
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFData - _numElts >= 1! " << varId);
		return false;
	}

	if (varInfo._maxRecNum <= 0)
		//no record in file
		return true;

	nbRec = varInfo._maxRecNum - startRec + 1;

	dimSize = 1;
	if (varInfo._numDims > 0)
		for (int i = 0; i < varInfo._numDims; ++i)
			dimSize *= varInfo._dimSizes[i];

	_workingBuffers->reallocBuffer(bufferType, nbRec*varInfo._numBytes*dimSize);

	CDFstatus status = CDFgetVarRangeRecordsByVarName(_cdfid, varInfo._name, startRec,
		varInfo._maxRecNum, _workingBuffers->getBuffer(bufferType));

	if (status != CDF_OK)
	{
		LOG4CXX_ERROR(gLogger, "FileReaderCDF::getCDFData - Error to get data for " << varId);
		return false;
	}

	return true;
}

bool FileReaderCDF::extractShort(CDFWorkingBuffers::BufferType bufferType, long recIndex, long dimIndex, long dimSize,
		long dataType, long numBytes, short& value)
{
	void *p = (void*)((intptr_t)_workingBuffers->getBuffer(bufferType) + (recIndex*dimSize + dimIndex)*numBytes);

	switch(dataType)
	{
		case CDF_BYTE :
		case CDF_INT1 :
		{
			char* c = (char*)p;
			value = (short)(*c);
			break;
		}
		case CDF_UINT1 :
		{
			unsigned char* uc = (unsigned char*)p;
			value = (short)(*uc);
			break;
		}
		case CDF_INT2 :
		{
			short* s = (short *)p;
			value = (short)(*s);
			break;
		}
		case CDF_UINT2 :
		{
			unsigned short* us = (unsigned short*)p;
			value = (short)(*us);
			break;
		}
		default:
			return false;
	}
	return true;
}

bool FileReaderCDF::extractInt(CDFWorkingBuffers::BufferType bufferType, long recIndex, long dimIndex, long dimSize,
		long dataType, long numBytes, int& value)
{
	//try to extract a short
	short s;
	if (extractShort(bufferType, recIndex, dimIndex, dimSize,
			dataType, numBytes, s))
	{
		//cast short to int
		value = (int)s;
		return true;
	}

	void *p = (void*)((intptr_t)_workingBuffers->getBuffer(bufferType) + (recIndex*dimSize + dimIndex)*numBytes);
	switch (dataType)
	{
	case CDF_INT4 :
	{
		int* i = (int*)p;
		value = (int)(*i);
		break;
	}
	case CDF_UINT4 :
	{
		unsigned int* ui = (unsigned int*)(p);
		value = (int)(*ui);
		break;
	}
	default:
		return false;
	}

	return true;
}

bool FileReaderCDF::extractFloat(CDFWorkingBuffers::BufferType bufferType, long recIndex, long dimIndex, long dimSize,
		long dataType, long numBytes, float& value)
{
	//try to extract an int
	int i;
	if (extractInt(bufferType, recIndex, dimIndex, dimSize,
			dataType, numBytes, i))
	{
		//cast int to float
		value = (float)i;
		return true;
	}

	void *p = (void*)((intptr_t)_workingBuffers->getBuffer(bufferType) + (recIndex*dimSize + dimIndex)*numBytes);
	switch (dataType)
	{
	case CDF_REAL4 :
	case CDF_FLOAT :
	{
		float* f = (float*)p;
		value = (float)(*f);
		break;
	}
	default :
		return false;
	}

	return true;
}

bool FileReaderCDF::extractDouble(CDFWorkingBuffers::BufferType bufferType, long recIndex, long dimIndex, long dimSize,
		long dataType, long numBytes, double& value)
{
	//try to extract an float
	float f;
	if (extractFloat(bufferType, recIndex, dimIndex, dimSize,
		dataType, numBytes, f))
	{
		//cast float to double
		value = (double)f;
		return true;
	}

	void *p = (void*)((intptr_t)_workingBuffers->getBuffer(bufferType) + (recIndex*dimSize + dimIndex)*numBytes);

	switch(dataType)
	{
	case CDF_REAL8 :
	case CDF_DOUBLE :
	case CDF_EPOCH :
	{
		double* d = (double*)p;
		value = (double)(*d);
		break;
	}
	default :
		return false;
	}

	return true;
}

bool FileReaderCDF::extractEpoch16(CDFWorkingBuffers::BufferType bufferType, long recIndex, long dimIndex, long dimSize,
		long dataType, long numBytes, double value[])
{
	void *p = (void*)((intptr_t)_workingBuffers->getBuffer(bufferType) + (recIndex*dimSize + dimIndex)*numBytes);

	switch(dataType)
	{
	case CDF_EPOCH16 :
	{
		std::memcpy(value, p, 2*sizeof(double));
		return true;
	}
	default :
		return false;
	}

	return true;
}

bool FileReaderCDF::extractTT2000(CDFWorkingBuffers::BufferType bufferType, long recIndex, long dimIndex, long dimSize,
		long dataType, long numBytes, long long& value)
{
	void *p = (void*)((intptr_t)_workingBuffers->getBuffer(bufferType) + (recIndex*dimSize + dimIndex)*numBytes);

	switch(dataType)
	{
	case CDF_TIME_TT2000 :
	{
		long long* ll = (long long*)p;
		value = (long long)(*ll);
		break;
	}
	default :
		return false;
	}

	return true;
}

/*
 * @brief Get an information
 */
bool FileReaderCDF::getInfo(const char* /*pInfoName*/, std::vector<double>& /*res*/)
{
	LOG4CXX_DEBUG(gLogger, "FileReaderCDF::getInfo");

	boost::mutex::scoped_lock scoped_lock(AMDA::Parameters::ParameterManager::mutexCDFLib);

	//ToDo

	return false;
}

} /* LocalFileInterface */
} /* AMDA */