Package com.sun.enterprise.util.zip

Source Code of com.sun.enterprise.util.zip.ZipWriter

/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. 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.html
* or glassfish/bootstrap/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 glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code.  If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [year]
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*
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* 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.
*/

/* Byron Nevins, April 2000
* ZipFile -- A utility class for exploding jar files that contain EJB(s).  Used *only* in this package by the EJBImporter class
*/

package com.sun.enterprise.util.zip;

import java.io.*;
import java.util.zip.*;

import com.sun.enterprise.util.diagnostics.Reporter;
import com.sun.enterprise.util.diagnostics.StackTrace;
import com.sun.enterprise.util.io.FileListerRelative;

public class ZipWriter
{
  public ZipWriter(String zipFilename, String dirName) throws ZipFileException
  {
    init(zipFilename, dirName);
    createItemList(null);
  }

  ///////////////////////////////////////////////////////////////////////////////////////////////////////
 
  public ZipWriter(String zipFilename, String dirName, ZipItem[] theItems) throws ZipFileException
  {
    items = theItems;
    init(zipFilename, dirName);
  }

  ///////////////////////////////////////////////////////////////////////////////////////////////////////
 
  public ZipWriter(String zipFilename, String dirName, String[] fileList) throws ZipFileException
  {
    init(zipFilename, dirName);
    createItemList(fileList);
  }

  ///////////////////////////////////////////////////////////////////////////////////////////////////////
 
  public ZipWriter(OutputStream outStream, String dirName, String[] fileList) throws ZipFileException
  {
    init(outStream, dirName);
    createItemList(fileList);
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////

  private void init(String outFileName, String dirName) throws ZipFileException
  {
    try
    {
      init(new FileOutputStream(outFileName), dirName);
    }
    catch(Exception e)
    {
      throw new ZipFileException(e);
    }
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////

  private void init(OutputStream outStream, String dirName) throws ZipFileException
  {
    try
    {
      // note -- these asserts will be caught & repackaged as a ZipFileException
      Reporter.insist(dirName);
     
      //make sure it's really a directory
      File f = new File(dirName);
      Reporter.insist(f.exists(),    "directory (" + dirName + ") doesn't exist");
      Reporter.insist(f.isDirectory());
     
      // change the filename to be full-path & UNIX style
      try
      {
        dirName = f.getCanonicalPath();
      }
      catch(IOException e)
      {
        Reporter.warn("Couldn't getCanonicalPath() for " + dirName);
      }
     
      dirName = dirName.replace('\\', '/')// all UNIX-style filenames...
     
     
      // we need the dirname to end in a '/'
      if(!dirName.endsWith("/"))
        dirName += "/";

     
      this.dirName    = dirName;
      zipStream      = new ZipOutputStream(outStream);
    }
    catch(Throwable t)
    {
      throw new ZipFileException(t);
    }
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////

    /**
     * Does not throw an exception when there is a duplicate zip entry.
     *
     * @throws  ZipFileException   if an error while creating the archive
     */
  public void safeWrite()  throws ZipFileException
  {
    try
    {
      for(int i = 0; i < items.length; i++)
      {
                try
                {
                    addEntry(items[i]);
                }
                catch (ZipException e)
                {
                    // ignore - duplicate zip entry
                }
      }
     
      zipStream.close();
    }
    catch(ZipFileException z)
    {
      Reporter.critical(new StackTrace(z));
      throw z;
    }
    catch(Exception e)
    {
      Reporter.critical(new StackTrace(e));
      throw new ZipFileException(e);
    }
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
  public void write()  throws ZipFileException
  {
    try
    {
      for(int i = 0; i < items.length; i++)
      {
        addEntry(items[i]);
      }
     
      zipStream.close();
    }
    catch(ZipFileException z)
    {
      Reporter.critical(new StackTrace(z));
      throw z;
    }
    catch(Exception e)
    {
      Reporter.critical(new StackTrace(e));
      throw new ZipFileException(e);
    }
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
  private void addEntry(ZipItem itemthrows ZipFileException, IOException
  {
    int          totalBytes  = 0;
    FileInputStream    in      = new FileInputStream(item.file);
    ZipEntry      ze      = new ZipEntry(item.name);
   
    zipStream.putNextEntry(ze);

    for(int numBytes = in.read(buffer); numBytes > 0; numBytes = in.read(buffer))
    {
      zipStream.write(buffer, 0, numBytes);
      totalBytes += numBytes;
    }
   
    /* Bug 4753245
     * WBN 11/22/02
     * The in.close() method was missing -- causing problems when trying to delete this file in
     * other code -- at least until the garbage collector gets around to closing it.
     * Normally I wouldn't put this inside a try/catch -- an error ought to be returned,
     * but this is a special low-risk-toleration time.  Adding the try/catch is safer.  The
     * code will behave exactly like before if an Exception is thrown.  It can't possibly hurt anything
     * to add the close()
     */
    try  // note: feel free to remove this try sometime in the future!
    {
      in.close();
    }
    catch(Exception e)
    {
      // ignore it
      Reporter.warn("Couldn't close the FileInputStream for the file: " + item.file);
    }
   
    zipStream.closeEntry();
    Reporter.verbose("Wrote " + item.name + " to Zip File.  Wrote " + totalBytes + " bytes.");
  }   

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
  private void createItemList(String[] files) throws ZipFileException
  {
    try
    {
      if(files == null)
      {
        FileListerRelative lister = new FileListerRelative(new File(dirName));
        files = lister.getFiles();
      }

      if(files.length <= 0)
        throw new ZipFileException("No files to add!");

      items = new ZipItem[files.length];

      for(int i = 0; i < files.length; i++)
      {
        File f = new File(dirName + files[i]);
        items[i] = new ZipItem(f, files[i].replace('\\', '/'))// just in case...
      }
    }
    catch(Throwable t)
    {
      throw new ZipFileException(t);
    }
     
  }

  //////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
  String getDirName()
  {
    return dirName;
  }
   
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
  private static void usage()
  {
    System.out.println("usage: java com.elf.util.zip.ZipWriter zip-filename directory-name");
    System.exit(1);
  }
   
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
  public static void main(String[] args)
  {
    Reporter.setSeverityLevel(0);
   
    if(args == null || args.length != 2)
      usage();
   
    try
    {
      ZipWriter zw = new ZipWriter(args[0], args[1]);
      zw.write();
      Reporter.verbose("" + zw);
    }
    catch(ZipFileException e)
    {
      Reporter.verbose("ZipFileException: " + e);
      System.exit(0);
    }
  }

  /////////////////////////////////////////////////////////////////////////////////////////

  //private          String      zipFilename    = null;
  private          String      dirName      = null;
  private          ZipOutputStream zipStream    = null;
  private          byte[]      buffer      = new byte[16384];
  private          ZipItem[]    items      = null;
}
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