Package org.objectstyle.woproject.ant

Source Code of org.objectstyle.woproject.ant.JApplicationJavaWorker

/* ====================================================================
*
* The ObjectStyle Group Software License, Version 1.0
*
* Copyright (c) 2002 The ObjectStyle Group
* and individual authors of the software.  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
*        ObjectStyle Group (http://objectstyle.org/)."
*    Alternately, this acknowlegement may appear in the software itself,
*    if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "ObjectStyle Group" and "Cayenne"
*    must not be used to endorse or promote products derived
*    from this software without prior written permission. For written
*    permission, please contact andrus@objectstyle.org.
*
* 5. Products derived from this software may not be called "ObjectStyle"
*    nor may "ObjectStyle" appear in their names without prior written
*    permission of the ObjectStyle 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 OBJECTSTYLE GROUP 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 ObjectStyle Group.  For more
* information on the ObjectStyle Group, please see
* <http://objectstyle.org/>.
*
*/
package org.objectstyle.woproject.ant;

import java.io.File;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.taskdefs.Expand;
import org.apache.tools.ant.taskdefs.Jar;
import org.apache.tools.ant.taskdefs.Manifest;
import org.apache.tools.ant.taskdefs.ManifestException;
import org.apache.tools.ant.taskdefs.ManifestTask;
import org.apache.tools.ant.types.FileSet;

class JApplicationJavaWorker implements JApplicationWorker {

  protected JApplication task;

  protected File baseDir;

  protected File scratchDir;

  protected Collection unpackedJarDirs;

  protected File manifestFile;

  public void execute(JApplication task) throws BuildException {
    this.task = task;
    this.baseDir = task.getDestDir();
    this.unpackedJarDirs = new ArrayList();

    try {
      executeInternal();
    } finally {
      // must clean the tempdir
      if (!recursiveDelete(scratchDir)) {
        throw new BuildException("Failed to clean up temp directory: " + scratchDir);
      }
    }
  }

  protected void executeInternal() throws BuildException {
    createDirectories();
    createManifest();
    unpackJars();
    createFatJar();
  }

  void createManifest() throws BuildException {
    this.manifestFile = new File(scratchDir, "MANIFEST.MF");

    Manifest.Attribute mainClass = new Manifest.Attribute();
    mainClass.setName("Main-Class");
    mainClass.setValue(task.getMainClass());

    ManifestTask manifest = (ManifestTask) task.createSubtask(ManifestTask.class);
    manifest.setFile(manifestFile);
    try {
      manifest.addConfiguredAttribute(mainClass);
    } catch (ManifestException e) {
      throw new BuildException("Manifest error", e);
    }

    manifest.execute();
  }

  void createFatJar() throws BuildException {
    File fatJar = new File(baseDir, task.getName() + ".jar");
    fatJar.delete();

    Jar jar = (Jar) task.createSubtask(Jar.class);
    jar.setDestFile(fatJar);
    jar.setManifest(manifestFile);

    Iterator it = unpackedJarDirs.iterator();
    while (it.hasNext()) {

      File jarDir = (File) it.next();

      FileSet fs = new FileSet();
      fs.setDir(jarDir);
      jar.addFileset(fs);
    }

    jar.execute();
  }

  void unpackJars() throws BuildException {
    // unpack in separate dirs, to allow multiple instances of the same
    // resource from different jars.

    int jarId = 0;

    Iterator it = task.getLibs().iterator();
    while (it.hasNext()) {
      FileSet fs = (FileSet) it.next();
      DirectoryScanner scanner = fs.getDirectoryScanner(task.getProject());

      String[] files = scanner.getIncludedFiles();
      Expand unjar = (Expand) task.createSubtask(Expand.class);

      for (int i = 0; i < files.length; i++) {

        File unpackDir = new File(scratchDir, jarId++ + "");
        unpackDir.mkdirs();
        unpackedJarDirs.add(unpackDir);

        unjar.setDest(unpackDir);
        unjar.setSrc(new File(scanner.getBasedir(), files[i]));
        unjar.execute();
      }
    }
  }

  void createDirectories() throws BuildException {

    if (!baseDir.isDirectory() && !baseDir.mkdirs()) {
      throw new BuildException("Can't create directory " + baseDir.getAbsolutePath());
    }

    File tmpDir = new File(System.getProperty("java.io.tmpdir"));
    String label = "japplication-" + System.currentTimeMillis();
    for (int i = 0; i < 10; i++) {
      File dir = new File(tmpDir, label + i);
      if (!dir.exists() && dir.mkdirs()) {
        this.scratchDir = dir;
        break;
      }
    }

    if (!scratchDir.isDirectory()) {
      throw new BuildException("Can't create scratch directory");
    }
  }

  boolean recursiveDelete(File file) {
    if (!file.exists()) {
      return true;
    }

    if (!file.isDirectory()) {
      return file.delete();
    }

    String[] list = file.list();
    for (int i = 0; i < list.length; i++) {
      if (!recursiveDelete(new File(file, list[i]))) {
        return false;
      }

    }

    return file.delete();
  }
}
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