de.huxhorn.lilith.tools.CreateMd5Command.java Source code

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Here is the source code for de.huxhorn.lilith.tools.CreateMd5Command.java

Source

/*
 * Lilith - a log event viewer.
 * Copyright (C) 2007-2015 Joern Huxhorn
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package de.huxhorn.lilith.tools;

import de.huxhorn.lilith.swing.ApplicationPreferences;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.commons.codec.binary.Hex;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class CreateMd5Command {
    public static boolean createMd5(File input) {
        final Logger logger = LoggerFactory.getLogger(CreateMd5Command.class);

        if (!input.isFile()) {
            if (logger.isWarnEnabled())
                logger.warn("{} isn't a file!", input.getAbsolutePath());
            return false;
        }
        File output = new File(input.getParentFile(), input.getName() + ".md5");

        try {

            FileInputStream fis = new FileInputStream(input);
            byte[] md5 = ApplicationPreferences.getMD5(fis);
            if (md5 == null) {
                if (logger.isWarnEnabled()) {
                    logger.warn("Couldn't calculate checksum for {}!", input.getAbsolutePath());
                }
                return false;
            }
            FileOutputStream fos = new FileOutputStream(output);
            fos.write(md5);
            fos.close();
            if (logger.isInfoEnabled()) {
                logger.info("Wrote checksum of {} to {}.", input.getAbsolutePath(), output.getAbsolutePath());
                logger.info("MD5: {}", Hex.encodeHexString(md5));
            }
        } catch (IOException e) {
            if (logger.isWarnEnabled())
                logger.warn("Exception while creating checksum!", e);
            return false;
        }
        return true;
    }
}