jvanzyl     2002/07/11 22:49:55

  Added:       src/java/org/apache/maven/app Expand.java
  Log:
  o Lifted the Expand task from Ant to expand plugins that are contained
    in JAR files. Eventually it would be nice to pull everything directly
    from the JAR but this is a start and makes things a lot easier.
  
  Revision  Changes    Path
  1.1                  jakarta-turbine-maven/src/java/org/apache/maven/app/Expand.java
  
  Index: Expand.java
  ===================================================================
  /*
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2000-2002 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Ant", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact [EMAIL PROTECTED]
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  //package org.apache.tools.ant.taskdefs;
  package org.apache.maven.app;
  
  import org.apache.tools.ant.util.FileUtils;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.FileNotFoundException;
  import java.io.InputStream;
  import java.io.IOException;
  import java.util.Date;
  import java.util.Vector;
  import java.util.zip.ZipInputStream;
  import java.util.zip.ZipEntry;
  
  /**
   * Unzip a file.
   *
   * @author [EMAIL PROTECTED]
   * @author <a href="mailto:[EMAIL PROTECTED]";>Stefan Bodewig</a>
   * @author <a href="mailto:[EMAIL PROTECTED]";>Magesh Umasankar</a>
   * @since Ant 1.1
   * @ant.task category="packaging" name="unzip" name="unjar" name="unwar"
   */
  public class Expand
  {
      private File dest;//req
      private File source;// req
      private boolean overwrite = true;
      private Vector patternsets = new Vector();
      private Vector filesets = new Vector();
  
      /**
       * Do the work.
       *
       * @exception BuildException Thrown in unrecoverable error.
       */
      public void execute()
          throws Exception
      {
          FileUtils fileUtils = FileUtils.newFileUtils();
          expandFile(fileUtils, source, dest);
      }
  
      /*
       * This method is to be overridden by extending unarchival tasks.
       */
      /**
       * Description of the Method
       */
      protected void expandFile(FileUtils fileUtils, File srcF, File dir)
      {
          ZipInputStream zis = null;
          try
          {
              // code from WarExpand
              zis = new ZipInputStream(new FileInputStream(srcF));
              ZipEntry ze = null;
  
              while ((ze = zis.getNextEntry()) != null)
              {
                  extractFile(fileUtils, srcF, dir, zis,
                      ze.getName(), new Date(ze.getTime()),
                      ze.isDirectory());
              }
  
              //log("expand complete", Project.MSG_VERBOSE);
          }
          catch (IOException ioe)
          {
              //throw new BuildException("Error while expanding " + srcF.getPath(),
                //  ioe);
          }
          finally
          {
              if (zis != null)
              {
                  try
                  {
                      zis.close();
                  }
                  catch (IOException e)
                  {}
              }
          }
      }
  
      /**
       * Description of the Method
       */
      protected void extractFile(FileUtils fileUtils, File srcF, File dir,
                                 InputStream compressedInputStream,
                                 String entryName,
                                 Date entryDate, boolean isDirectory)
          throws IOException
      {
          File f = fileUtils.resolveFile(dir, entryName);
          try
          {
              if (!overwrite && f.exists()
                   && f.lastModified() >= entryDate.getTime())
              {
                  //log("Skipping " + f + " as it is up-to-date",
                    //  Project.MSG_DEBUG);
                  return;
              }
  
              //log("expanding " + entryName + " to " + f,
                //  Project.MSG_VERBOSE);
              // create intermediary directories - sometimes zip don't add them
              File dirF = f.getParentFile();
              //File dirF = fileUtils.getParentFile(f);
              dirF.mkdirs();
  
              if (isDirectory)
              {
                  f.mkdirs();
              }
              else
              {
                  byte[] buffer = new byte[1024];
                  int length = 0;
                  FileOutputStream fos = null;
                  try
                  {
                      fos = new FileOutputStream(f);
  
                      while ((length =
                          compressedInputStream.read(buffer)) >= 0)
                      {
                          fos.write(buffer, 0, length);
                      }
  
                      fos.close();
                      fos = null;
                  }
                  finally
                  {
                      if (fos != null)
                      {
                          try
                          {
                              fos.close();
                          }
                          catch (IOException e)
                          {}
                      }
                  }
              }
  
              fileUtils.setFileLastModified(f, entryDate.getTime());
          }
          catch (FileNotFoundException ex)
          {
          }
  
      }
  
      /**
       * Set the destination directory. File will be unzipped into the destination
       * directory.
       *
       * @param d Path to the directory.
       */
      public void setDest(File d)
      {
          this.dest = d;
      }
  
      /**
       * Set the path to zip-file.
       *
       * @param s Path to zip-file.
       */
      public void setSrc(File s)
      {
          this.source = s;
      }
  
      /**
       * Should we overwrite files in dest, even if they are newer than the
       * corresponding entries in the archive?
       */
      public void setOverwrite(boolean b)
      {
          overwrite = b;
      }
  }
  
  
  

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