/**
 * Copyright 2008-2009 DRIVER PROJECT (ICM UW)
 * Original author: Marek Horst
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package eu.dnetlib.data.index.utils;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.net.URL;

/**
 * File utilities.
 * @author Marek Horst
 * @version 0.7.6
 *
 */
public class FileUtils {

	/**
	 * Returns file content for given path.
	 * Path might be absolute, relative file path or classpath.
	 * @param filePath
	 * @return file content for given path
	 */
	public static String getFileContent(String filePath) {
		if (filePath==null)
			return null;
		try {
			File file = null;
//			added support for reading file content by web application
			URL fileURL = FileUtils.class.getResource("/"+filePath);
			if (fileURL!=null) {
				file = new File(fileURL.getPath());
			} else
				file = new File(filePath);
			
			BufferedReader reader = new BufferedReader(new FileReader(file));
			StringBuffer strBuff = new StringBuffer();
			String line;
			while ((line = reader.readLine())!=null) {
				strBuff.append(line);
			}
			return strBuff.toString();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			return null;
		} catch (IOException e) {
			e.printStackTrace();
			return null;
		}
	}
	
}