net.sf.keystore_explorer.utilities.io.ReadUtil.java Source code

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Here is the source code for net.sf.keystore_explorer.utilities.io.ReadUtil.java

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/*
 * Copyright 2004 - 2013 Wayne Grant
 *           2013 - 2016 Kai Kramer
 *
 * This file is part of KeyStore Explorer.
 *
 * KeyStore Explorer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * KeyStore Explorer 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with KeyStore Explorer.  If not, see <http://www.gnu.org/licenses/>.
 */
package net.sf.keystore_explorer.utilities.io;

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

import org.apache.commons.io.IOUtils;

/**
 * Class of utility methods to read from streams.
 *
 */
public class ReadUtil {
    private ReadUtil() {
    }

    /**
     * Read all bytes from the supplied input stream. Closes the input stream.
     *
     * @param is
     *            Input stream
     * @return All bytes
     * @throws IOException
     *             If an I/O problem occurs
     */
    public static byte[] readFully(InputStream is) throws IOException {
        ByteArrayOutputStream baos = null;

        try {
            baos = new ByteArrayOutputStream();

            byte[] buffer = new byte[2048];
            int read = 0;

            while ((read = is.read(buffer)) != -1) {
                baos.write(buffer, 0, read);
            }

            return baos.toByteArray();
        } finally {
            IOUtils.closeQuietly(baos);
            IOUtils.closeQuietly(is);
        }
    }
}