/*
 * ScanFile.cpp
 *
 *  Created on: Nov 26, 2014
 *      Author: Hovanes Egiyan
 */

#include <boost/iostreams/device/file_descriptor.hpp>
#include <boost/iostreams/stream.hpp>
#include <boost/filesystem/operations.hpp>
#include <boost/filesystem/path.hpp>
#include <boost/algorithm/string.hpp>
#include "boost/algorithm/string/classification.hpp"

#include "ScanFile.hh"

ClassImp( ScanFile )

using namespace std;

ScanFile::ScanFile( const string fName ) :
		TObject(), fileName( fName ), fileStream( 0 ), bufferPipe() {
	// Try to read MDA file
	try {
		cout << "Entered readMDAFile" << endl;
		// Check existence of the mda file first
		if ( !boost::filesystem::exists( fileName ) )
			throw std::runtime_error( "ERROR: File " + fileName + " does not exist" );
		// Create a pipe for mda-dump command, then turn it into a input stream for C++
		string dumpCommand = string( "mda-dump" ) + " " + fileName;

		fileStream = new std::istream( &bufferPipe ); // create a stream from the pipe.

		// Throw an exception if the pipe cannot be open with a command line
		if ( bufferPipe.open( dumpCommand.c_str(), "r" ) == NULL ) {
			throw std::runtime_error( "ERROR: Cannot open pipe with command: " + dumpCommand );
		}

		cout << "Done" << endl;
	} catch ( const runtime_error & e ) {
		string errMsg = e.what();
		cerr << errMsg << endl;
		throw e;
	}
	return;
}

ScanFile::~ScanFile() {
	if ( fileStream != 0 ) delete fileStream;
	bufferPipe.close();
	return;
}