net.sourceforge.floggy.persistence.pool.ZipOutputPool.java Source code

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Here is the source code for net.sourceforge.floggy.persistence.pool.ZipOutputPool.java

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/**
 * Copyright (c) 2006-2011 Floggy Open Source Group. All rights reserved.
 *
 * 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 net.sourceforge.floggy.persistence.pool;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import java.net.URL;

import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

import javassist.CannotCompileException;
import javassist.CtClass;
import javassist.NotFoundException;

import org.apache.commons.io.IOUtils;

/**
 * DOCUMENT ME!
 *
 * @author <a href="mailto:thiago.moreira@floggy.org">Thiago Moreira</a>
 * @version $Revision$
  */
public class ZipOutputPool implements OutputPool {
    /**
     * DOCUMENT ME!
     */
    protected ZipOutputStream out;

    /**
     * Creates a new ZipOutputPool object.
     *
     * @param file DOCUMENT ME!
     *
     * @throws IOException DOCUMENT ME!
     * @throws IllegalArgumentException DOCUMENT ME!
     */
    public ZipOutputPool(File file) throws IOException {
        if (file == null) {
            throw new IllegalArgumentException("The file parameter cannot be null!");
        }

        out = new ZipOutputStream(new FileOutputStream(file));
    }

    /**
     * DOCUMENT ME!
    *
    * @param ctClass DOCUMENT ME!
    *
    * @throws NotFoundException DOCUMENT ME!
    * @throws IOException DOCUMENT ME!
    * @throws CannotCompileException DOCUMENT ME!
    */
    public void addClass(CtClass ctClass) throws NotFoundException, IOException, CannotCompileException {
        String fileName = ctClass.getName();
        fileName = fileName.replace('.', '/').concat(".class");
        addResource(new ByteArrayInputStream(ctClass.toBytecode()), fileName);
    }

    /**
     * DOCUMENT ME!
    *
    * @param fileURL DOCUMENT ME!
    * @param fileName DOCUMENT ME!
    *
    * @throws IOException DOCUMENT ME!
    */
    public void addFile(URL fileURL, String fileName) throws IOException {
        addResource(fileURL.openStream(), fileName);
    }

    /**
     * DOCUMENT ME!
    *
    * @param resourceStream DOCUMENT ME!
    * @param fileName DOCUMENT ME!
    *
    * @throws IOException DOCUMENT ME!
    */
    public void addResource(InputStream resourceStream, String fileName) throws IOException {
        fileName = fileName.replace(File.separatorChar, '/');

        if (fileName.startsWith("/")) {
            fileName = fileName.substring(1);
        }

        ZipEntry entry = new ZipEntry(fileName);
        out.putNextEntry(entry);
        IOUtils.copy(resourceStream, out);
        out.closeEntry();
    }

    /**
     * DOCUMENT ME!
    *
    * @throws IOException DOCUMENT ME!
    */
    public void finish() throws IOException {
        out.finish();
        out.close();
    }
}