com.smash.revolance.ui.model.helper.ArchiveHelper.java Source code

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Here is the source code for com.smash.revolance.ui.model.helper.ArchiveHelper.java

Source

package com.smash.revolance.ui.model.helper;

/*
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 * Revolance-UI-Model
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 * Copyright (C) 2012 - 2013 RevoLance
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 * 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/gpl-3.0.html>.
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */

import org.apache.commons.io.IOUtils;

import java.io.*;
import java.util.zip.CRC32;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

/**
 * User: wsmash
 * Date: 03/05/13
 * Time: 08:15
 */
public class ArchiveHelper {

    public static File buildArchive(File archive, File... files) throws FileNotFoundException {
        FileOutputStream fos = new FileOutputStream(archive);
        ZipOutputStream zos = new ZipOutputStream(fos);
        int bytesRead;
        byte[] buffer = new byte[1024];
        CRC32 crc = new CRC32();

        for (File file : files) {
            if (!file.exists()) {
                System.err.println("Skipping: " + file);
                continue;
            }
            BufferedInputStream bis = null;
            try {
                bis = new BufferedInputStream(new FileInputStream(file));
                crc.reset();
                while ((bytesRead = bis.read(buffer)) != -1) {
                    crc.update(buffer, 0, bytesRead);
                }

                bis.close();

                // Reset to beginning of input stream
                bis = new BufferedInputStream(new FileInputStream(file));
                String entryPath = FileHelper.getRelativePath(archive.getParentFile(), file);

                ZipEntry entry = new ZipEntry(entryPath);
                entry.setMethod(ZipEntry.STORED);
                entry.setCompressedSize(file.length());
                entry.setSize(file.length());
                entry.setCrc(crc.getValue());
                zos.putNextEntry(entry);
                while ((bytesRead = bis.read(buffer)) != -1) {
                    zos.write(buffer, 0, bytesRead);
                }
            } catch (FileNotFoundException e) {

            } catch (IOException e) {
                e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
            } finally {
                IOUtils.closeQuietly(bis);
            }
        }
        IOUtils.closeQuietly(zos);
        return archive;
    }
}