io.github.blindio.prospero.core.browserdrivers.phantomjs.AbstractUnarchiver.java Source code

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Here is the source code for io.github.blindio.prospero.core.browserdrivers.phantomjs.AbstractUnarchiver.java

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/*******************************************************************************
 * Copyright 2014 S. Thorson Little
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package io.github.blindio.prospero.core.browserdrivers.phantomjs;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.commons.compress.archivers.ArchiveEntry;
import org.apache.commons.compress.archivers.ArchiveInputStream;
import org.apache.commons.lang3.SystemUtils;

public abstract class AbstractUnarchiver implements UnArchiver {

    final static int BUFFER = 2048;

    private File srcFile;
    private File destDir;

    public void setSourceFile(File sourceFile) {
        srcFile = sourceFile;
    }

    public File getSourceFile() {
        return srcFile;
    }

    public void setDestDirectory(File destDirectory) {
        destDir = destDirectory;
    }

    public File getDestDirectory() {
        return destDir;
    }

    abstract public void extract();

    protected void extract(ArchiveInputStream arcInStream) throws IOException {
        ArchiveEntry entry = null;

        /** Read the tar entries using the getNextEntry method **/

        while ((entry = (ArchiveEntry) arcInStream.getNextEntry()) != null) {

            System.out.println("Extracting: " + entry.getName());

            /** If the entry is a directory, create the directory. **/

            if (entry.isDirectory()) {

                File f = new File(getDestDirectory() + SystemUtils.FILE_SEPARATOR + entry.getName());
                f.mkdirs();
            }
            /**
             * If the entry is a file,write the decompressed file to the disk
             * and close destination stream.
             **/
            else {
                int count;
                byte data[] = new byte[BUFFER];

                FileOutputStream fos = new FileOutputStream(
                        getDestDirectory() + SystemUtils.FILE_SEPARATOR + entry.getName());
                BufferedOutputStream dest = new BufferedOutputStream(fos, BUFFER);
                while ((count = arcInStream.read(data, 0, BUFFER)) != -1) {
                    dest.write(data, 0, count);
                }
                dest.close();
            }
        }

        /** Close the input stream **/

        arcInStream.close();
        System.out.println("untar completed successfully!!");
    }
}