/*

 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description:  Definitions for the class ReadFile

 *

 */

package com.nokia.s60tools.analyzetool.engine.statistic;

import java.io.BufferedReader;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStreamReader;

import java.util.AbstractList;

import com.nokia.s60tools.analyzetool.engine.ParseAnalyzeData;

/**

 * Reads thru trace file and generates statistic info

 * @author kihe

 *

 */

public class ReadFile {

	/** Parser */

	ParseAnalyzeData parser;

	/**

	 * Constructor

	 */

	public ReadFile()

	{

		parser = new ParseAnalyzeData(false, true);

	}

	/**

	 * Reads thru file

	 * @param path File location

	 * @return True if no errors occurs when reading file otherwise False

	 */

	public boolean readFile(final String path) {

		// return value

		boolean retValue = true;

		// input

		BufferedReader input = null;

		FileInputStream fis = null;

		try {

			// check that file exists

			if (path == null || ("").equals(path)) {

				return false;

			}

			java.io.File file = new java.io.File(path);

			if (!file.exists()) {

				return false;

			}

			// get input

			fis = new FileInputStream(file);

			input = new BufferedReader(new InputStreamReader(fis,"UTF-8"));

			// get first line of data file

			String line = null;

			// go thru file

			while ((line = input.readLine()) != null) {

				parser.parse(line);

			}

			fis.close();

			input.close();

		} catch (FileNotFoundException ex) {

			retValue = false;

			ex.printStackTrace();

		} catch (OutOfMemoryError oome){

			retValue = true;

			oome.printStackTrace();

		} catch (IOException ex) {

			retValue = false;

			ex.printStackTrace();

		} finally {

			try {

				if (input != null) {

					input.close();

				}

			} catch (IOException ex) {

				ex.printStackTrace();

			}

			try {

				if( fis != null ) {

					fis.close();

				}

			}catch(Exception e) {

				e.printStackTrace();

			}

		}

		return retValue;

	}

	/**

	 * Returns statistic

	 * @return Statistic

	 */

	public AbstractList<ProcessInfo> getStatistic()

	{

		return parser.getStatistic();

	}

	/**

	 * Finish the file reading.

	 */

	public void finish()

	{

		parser.finish();

	}

}