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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2013, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.richfaces.util;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 *
 */
public class StreamUtils {

    /**
     * Reads all bytes from an input stream to a byte array. Does not close the stream
     * @param is
     * @return all bytes from an input stream
     * @throws IOException
     */
    public static byte[] toByteArray(InputStream is) throws IOException {
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        copy(is, os);
        os.flush();
        return os.toByteArray();
    }

    /**
     * Copies all bytes from input stream to output stream. Does not flush or close
     * either stream
     * @param is
     * @param os
     * @throws IOException
     */
    public static void copy(InputStream is, OutputStream os) throws IOException {
        byte[] buffer = new byte[1024];
        int read = 0;
        while ((read = is.read(buffer, 0, buffer.length)) != -1) {
            os.write(buffer, 0, read);
        }
    }
}