com.sun.jdo.api.persistence.enhancer.util.ZipFileRegistry Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-client Show documentation
Appclient for Payara Server
The newest version!
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.jdo.api.persistence.enhancer.util;

import java.util.Hashtable;
import java.util.Enumeration;
import java.util.zip.ZipFile;
import java.io.*;

/**
 * ZipFileRegistry provides a central point for lookup of zip files
 * within the filter tool.  It needs to be public because it's
 * accessed from outside the filter.util package.
 */

public
class ZipFileRegistry {
  /* A mapping of file name to ZipFile */
  private static Hashtable zipFileMap = new Hashtable(11); 

  /**
   * Return a zip file which may already be open
   */
  public static ZipFile openZipFile(File f)
    throws FileNotFoundException, IOException {
    ZipFile zf = (ZipFile) zipFileMap.get(f.getPath());
    if (zf == null) {
      zf = new ZipFile(f);
      zipFileMap.put(zf.getName(), zf);
    }
    return zf;
  }

  /**
   * Return a zip file which must already be open
   */
  public static ZipFile getZipFile(String path) {
    return (ZipFile) zipFileMap.get(path);
  }

  /**
   * Returns an enumeration of the zip files in the registry
   * Each element is a ZipFile.
   */
  public static Enumeration zipFiles() {
    return zipFileMap.elements();
  }
  
}