IOUtils.java

package de.fuberlin.projecta.utils;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;

public class IOUtils {

	public static String readMultilineStringFromStdin() {
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		String data = "";
		String line;
		try {
			while ((line = in.readLine()) != null && line.length() != 0) {
				data += line + '\n';
			}
		} catch (IOException e) {
			return "";
		}
		return data;
	}

	/**
	 * Stolen from
	 * http://stackoverflow.com/questions/326390/how-to-create-a-java-string-from-the-contents-of-a-file
	 */
	public static String readFile(String path) throws IOException {
		FileInputStream stream = new FileInputStream(new File(path));
		try {
			FileChannel fc = stream.getChannel();
			MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0,
					fc.size());
			/* Instead of using default, pass in a decoder. */
			return Charset.defaultCharset().decode(bb).toString();
		} finally {
			stream.close();
		}
	}

}