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From bode...@apache.org
Subject cvs commit: jakarta-ant/src/main/org/apache/tools/ant/taskdefs/optional/unix AbstractAccessTask.java Chgrp.java Chown.java
Date Thu, 07 Nov 2002 15:59:48 GMT
bodewig     2002/11/07 07:59:47

  Modified:    .        WHATSNEW
               docs/manual optionaltasklist.html
               src/main/org/apache/tools/ant/taskdefs defaults.properties
  Added:       docs/manual/OptionalTasks chgrp.html chown.html
               src/main/org/apache/tools/ant/taskdefs/optional/unix
                        AbstractAccessTask.java Chgrp.java Chown.java
  Log:
  New tasks <chown> and <chgrp>
  
  PR: 9809
  Submitted by:	Gus Heck <gus.heck at olin.edu>
  
  Revision  Changes    Path
  1.311     +2 -0      jakarta-ant/WHATSNEW
  
  Index: WHATSNEW
  ===================================================================
  RCS file: /home/cvs/jakarta-ant/WHATSNEW,v
  retrieving revision 1.310
  retrieving revision 1.311
  diff -u -r1.310 -r1.311
  --- WHATSNEW	7 Nov 2002 15:18:47 -0000	1.310
  +++ WHATSNEW	7 Nov 2002 15:59:46 -0000	1.311
  @@ -89,6 +89,8 @@
   
   * new task <symlink> that creates and maintains symbolic links.
   
  +* new tasks <chown> and <chgrp> which are wrappers of the Unix commands.
  +
   Changes from Ant 1.5.1Beta1 to 1.5.1
   ====================================
   
  
  
  
  1.33      +2 -0      jakarta-ant/docs/manual/optionaltasklist.html
  
  Index: optionaltasklist.html
  ===================================================================
  RCS file: /home/cvs/jakarta-ant/docs/manual/optionaltasklist.html,v
  retrieving revision 1.32
  retrieving revision 1.33
  diff -u -r1.32 -r1.33
  --- optionaltasklist.html	6 Nov 2002 15:07:23 -0000	1.32
  +++ optionaltasklist.html	7 Nov 2002 15:59:46 -0000	1.33
  @@ -18,6 +18,8 @@
   <a href="OptionalTasks/dotnet.html">.NET Tasks</a><br>
   <a href="OptionalTasks/antlr.html">ANTLR</a><br>
   <a href="OptionalTasks/cab.html">Cab</a><br>
  +<a href="OptionalTasks/chgrp.html">Chgrp</a><br>
  +<a href="OptionalTasks/chown.html">Chown</a><br>
   <a href="OptionalTasks/clearcase.html">Clearcase Tasks</a><br>
   <a href="OptionalTasks/ccm.html">Continuus/Synergy Tasks</a><br>
   <a href="OptionalTasks/depend.html">Depend</a><br>
  
  
  
  1.1                  jakarta-ant/docs/manual/OptionalTasks/chgrp.html
  
  Index: chgrp.html
  ===================================================================
  <html>
  
  <head>
  <meta http-equiv="Content-Language" content="en-us">
  <title>Chgrp Task</title>
  </head>
  
  <body>
  
  <h2><a name="Chgrp">Chgrp</a></h2>
  <h3>Description</h3>
  
  <p>Changes the group of a file or all files inside specified
  directories. Right now it has effect only under Unix.  The group
  atribute is equivalent to the coresponding argument for the chgrp
  command.</p>
  
  <p><a href="../CoreTypes/fileset.html">FileSet</a> can be specified
  using nested <code>&lt;fileset&gt;</code> elements.</p>
  
  <h3>Parameters</h3>
  <table border="1" cellpadding="2" cellspacing="0">
    <tr>
      <td valign="top"><b>Attribute</b></td>
      <td valign="top"><b>Description</b></td>
      <td align="center" valign="top"><b>Required</b></td>
    </tr>
    <tr>
      <td valign="top">file</td>
      <td valign="top">the file of which the group must be changed.</td>
      <td valign="top" valign="middle" rowspan="2">one of the two or
        nested <code>&lt;fileset&gt;</code> elements.</td>
    </tr>
    <tr>
      <td valign="top">dir</td>
      <td valign="top">the directory whose group must be changed.</td>
    </tr>
    <tr>
      <td valign="top">group</td>
      <td valign="top">the new group.</td>
      <td valign="top" align="center">Yes</td>
    </tr>
    <tr>
      <td valign="top">parallel</td>
      <td valign="top">process all specified files using a single
        <code>chgrp</code> command. Defaults to true.</td>
      <td valign="top" align="center">No</td>
    </tr>
    <tr>
      <td valign="top">type</td>
      <td valign="top">One of <i>file</i>, <i>dir</i> or
        <i>both</i>. If set to <i>file</i>, only the group of
        plain files are going to be changed. If set to <i>dir</i>, only
        the directories are considered.</td>
      <td align="center" valign="top">No, default is <i>file</i></td>
    </tr>
  </table>
  <h3>Examples</h3>
  <blockquote>
    <p><code>&lt;chgrp file=&quot;${dist}/start.sh&quot; group=&quot;coders&quot;/&gt;</code></p>
  </blockquote>
  <p>makes the &quot;start.sh&quot; file belong to the coders group on a
  UNIX system.</p>
  <blockquote>
  <pre>
      &lt;chgrp owner=&quot;coderjoe&quot;&gt;
        &lt;fileset dir=&quot;${dist}/bin&quot; includes=&quot;**/*.sh&quot;/&gt;
      &lt;/chgrp&gt;
  </pre>
  </blockquote>
  <p>makes all &quot;.sh&quot; files below <code>${dist}/bin</code>
  belong to the coders group on a UNIX system.</p>
  <blockquote>
  <pre>
  &lt;chgrp group=&quot;coders&quot;&gt;
    &lt;fileset dir=&quot;shared/sources1&quot;&gt;
      &lt;exclude name=&quot;**/trial/**&quot;/&gt;
    &lt;/fileset&gt;
    &lt;fileset refid=&quot;other.shared.sources&quot;/&gt;
  &lt;/chgrp&gt;
  </pre>
  </blockquote>
  <p>makes all files below <code>shared/sources1</code> (except those
  below any directory named trial) belong to the coders group on a UNIX 
  system. In addition all files belonging to a FileSet
  with <code>id</code> <code>other.shared.sources</code> get the same
  group.</p>
  
  <hr>
  <p align="center">Copyright &copy; 2002 Apache Software
  Foundation. All rights Reserved.</p>
  
  </body>
  </html>
  
  
  
  
  1.1                  jakarta-ant/docs/manual/OptionalTasks/chown.html
  
  Index: chown.html
  ===================================================================
  <html>
  
  <head>
  <meta http-equiv="Content-Language" content="en-us">
  <title>Chown Task</title>
  </head>
  
  <body>
  
  <h2><a name="Chown">Chown</a></h2>
  <h3>Description</h3>
  
  <p>Changes the owner of a file or all files inside specified
  directories. Right now it has effect only under Unix.  The owner
  atribute is equivalent to the coresponding argument for the chown
  command.</p>
  
  <p><a href="../CoreTypes/fileset.html">FileSet</a> can be specified
  using nested <code>&lt;fileset&gt;</code> elements.</p>
  
  <h3>Parameters</h3>
  <table border="1" cellpadding="2" cellspacing="0">
    <tr>
      <td valign="top"><b>Attribute</b></td>
      <td valign="top"><b>Description</b></td>
      <td align="center" valign="top"><b>Required</b></td>
    </tr>
    <tr>
      <td valign="top">file</td>
      <td valign="top">the file of which the owner must be changed.</td>
      <td valign="top" valign="middle" rowspan="2">one of the two or
        nested <code>&lt;fileset&gt;</code> elements.</td>
    </tr>
    <tr>
      <td valign="top">dir</td>
      <td valign="top">the directory of which the owner must be changed.</td>
    </tr>
    <tr>
      <td valign="top">owner</td>
      <td valign="top">the new owner.</td>
      <td valign="top" align="center">Yes</td>
    </tr>
    <tr>
      <td valign="top">parallel</td>
      <td valign="top">process all specified files using a single
        <code>chown</code> command. Defaults to true.</td>
      <td valign="top" align="center">No</td>
    </tr>
    <tr>
      <td valign="top">type</td>
      <td valign="top">One of <i>file</i>, <i>dir</i> or
        <i>both</i>. If set to <i>file</i>, only the owner of
        plain files are going to be changed. If set to <i>dir</i>, only
        the directories are considered.</td>
      <td align="center" valign="top">No, default is <i>file</i></td>
    </tr>
  </table>
  <h3>Examples</h3>
  <blockquote>
    <p><code>&lt;chown file=&quot;${dist}/start.sh&quot; owner=&quot;coderjoe&quot;/&gt;</code></p>
  </blockquote>
  <p>makes the &quot;start.sh&quot; file belong to coderjoe on a
  UNIX system.</p>
  <blockquote>
  <pre>
      &lt;chown owner=&quot;coderjoe&quot;&gt;
        &lt;fileset dir=&quot;${dist}/bin&quot; includes=&quot;**/*.sh&quot;/&gt;
      &lt;/chown&gt;
  </pre>
  </blockquote>
  <p>makes all &quot;.sh&quot; files below <code>${dist}/bin</code>
  belong to coderjoe on a UNIX system.</p>
  <blockquote>
  <pre>
  &lt;chown owner=&quot;coderjoe&quot;&gt;
    &lt;fileset dir=&quot;shared/sources1&quot;&gt;
      &lt;exclude name=&quot;**/trial/**&quot;/&gt;
    &lt;/fileset&gt;
    &lt;fileset refid=&quot;other.shared.sources&quot;/&gt;
  &lt;/chown&gt;
  </pre>
  </blockquote>
  <p>makes all files below <code>shared/sources1</code> (except those
  below any directory named trial) belong to coderjoe on a UNIX 
  system. In addition all files belonging to a FileSet
  with <code>id</code> <code>other.shared.sources</code> get the same
  owner.</p>
  <hr>
  <p align="center">Copyright &copy; 2002 Apache Software
  Foundation. All rights Reserved.</p>
  
  </body>
  </html>
  
  
  
  
  1.134     +2 -0      jakarta-ant/src/main/org/apache/tools/ant/taskdefs/defaults.properties
  
  Index: defaults.properties
  ===================================================================
  RCS file: /home/cvs/jakarta-ant/src/main/org/apache/tools/ant/taskdefs/defaults.properties,v
  retrieving revision 1.133
  retrieving revision 1.134
  diff -u -r1.133 -r1.134
  --- defaults.properties	6 Nov 2002 15:07:23 -0000	1.133
  +++ defaults.properties	7 Nov 2002 15:59:47 -0000	1.134
  @@ -172,6 +172,8 @@
   setproxy=org.apache.tools.ant.taskdefs.optional.net.SetProxy
   vbc=org.apache.tools.ant.taskdefs.optional.dotnet.VisualBasicCompile
   symlink=org.apache.tools.ant.taskdefs.optional.unix.Symlink
  +chgrp=org.apache.tools.ant.taskdefs.optional.unix.Chgrp
  +chown=org.apache.tools.ant.taskdefs.optional.unix.Chown
   
   # deprecated ant tasks (kept for back compatibility)
   starteam=org.apache.tools.ant.taskdefs.optional.scm.AntStarTeamCheckOut
  
  
  
  1.1                  jakarta-ant/src/main/org/apache/tools/ant/taskdefs/optional/unix/AbstractAccessTask.java
  
  Index: AbstractAccessTask.java
  ===================================================================
  /*
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 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 apache@apache.org.
   *
   * 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/>.
   */
  
  /*
   * Since the initial version of this file was deveolped on the clock on
   * an NSF grant I should say the following boilerplate:
   *
   * This material is based upon work supported by the National Science
   * Foundaton under Grant No. EIA-0196404. Any opinions, findings, and
   * conclusions or recommendations expressed in this material are those
   * of the author and do not necessarily reflect the views of the
   * National Science Foundation.
   */
  
  package org.apache.tools.ant.taskdefs.optional.unix;
  
  import java.io.File;
  
  import org.apache.tools.ant.BuildException;
  import org.apache.tools.ant.taskdefs.Execute;
  import org.apache.tools.ant.taskdefs.ExecuteOn;
  import org.apache.tools.ant.taskdefs.condition.Os;
  import org.apache.tools.ant.types.Commandline;
  import org.apache.tools.ant.types.FileSet;
  
  /**
   * @author Patrick G. Heck <a href="mailto:gus.heck@olin.edu">gus.heck@olin.edu</a>
   * @since Ant 1.6
   *
   * @ant.task category="filesystem"
   */
  public abstract class AbstractAccessTask 
      extends org.apache.tools.ant.taskdefs.ExecuteOn {
  
      /**
       * Chmod task for setting file and directory permissions.
       */
      public AbstractAccessTask() {
          super.setParallel(true);
          super.setSkipEmptyFilesets(true);
      }
  
      public void setFile(File src) {
          FileSet fs = new FileSet();
          fs.setDir(new File(src.getParent()));
          fs.createInclude().setName(src.getName());
          addFileset(fs);
      }
  
      public void setDir(File src) {
          FileSet fs = new FileSet();
          fs.setDir(new File(src.getParent()));
          fs.createInclude().setName(src.getName());
          addFileset(fs);
      }
  
      public void setCommand(Commandline cmdl) {
          throw new BuildException(taskType +
                                   " doesn\'t support the command attribute",
                                   getLocation());
      }
  
      public void setSkipEmptyFilesets(boolean skip) {
          throw new BuildException(taskType + " doesn\'t support the "
                                   + "skipemptyfileset attribute",
                                   getLocation());
      }
  
      protected boolean isValidOs() {
          return Os.isFamily("unix") && super.isValidOs();
      }
  }
  
  
  
  1.1                  jakarta-ant/src/main/org/apache/tools/ant/taskdefs/optional/unix/Chgrp.java
  
  Index: Chgrp.java
  ===================================================================
  /*
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 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 apache@apache.org.
   *
   * 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/>.
   */
  
  /*
   * Since the initial version of this file was deveolped on the clock on
   * an NSF grant I should say the following boilerplate:
   *
   * This material is based upon work supported by the National Science
   * Foundaton under Grant No. EIA-0196404. Any opinions, findings, and
   * conclusions or recommendations expressed in this material are those
   * of the author and do not necessarily reflect the views of the
   * National Science Foundation.
   */
  
  package org.apache.tools.ant.taskdefs.optional.unix;
  
  import org.apache.tools.ant.BuildException;
  
  /**
   * Chgrp equivalent for unix-like environments.
   *
   * @author Patrick G. Heck 
   *         <a href="mailto:gus.heck@olin.edu">gus.heck@olin.edu</a>
   *
   * @since Ant 1.6
   *
   * @ant.task category="filesystem"
   */
  public class Chgrp extends AbstractAccessTask {
  
      private boolean haveGroup = false;
  
      /**
       * Chgrp task for setting unix group of a file.
       */
      public Chgrp() {
          super.setExecutable("chgrp");
      }
  
      /**
       * Set the group atribute.
       *
       * @param group    The new group for the file(s) or directory(ies)
       */
      public void setGroup(String group) {
          createArg().setValue(group);
          haveGroup = true;
      }
  
      protected void checkConfiguration() {
          if (!haveGroup) {
              throw new BuildException("Required attribute group not set in "+
                                       "chgrp", getLocation());
          }
          super.checkConfiguration();
      }
  
      /**
       * We don't want to expose the executable atribute, so overide it.
       */
      public void setExecutable(String e) {
          throw new BuildException(taskType + 
                                   " doesn\'t support the executable attribute",
                                   getLocation());
      }
  }
  
  
  
  1.1                  jakarta-ant/src/main/org/apache/tools/ant/taskdefs/optional/unix/Chown.java
  
  Index: Chown.java
  ===================================================================
  /*
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 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 apache@apache.org.
   *
   * 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/>.
   */
  
  /*
   * Since the initial version of this file was deveolped on the clock on
   * an NSF grant I should say the following boilerplate:
   *
   * This material is based upon work supported by the National Science
   * Foundaton under Grant No. EIA-0196404. Any opinions, findings, and
   * conclusions or recommendations expressed in this material are those
   * of the author and do not necessarily reflect the views of the
   * National Science Foundation.
   */
  
  package org.apache.tools.ant.taskdefs.optional.unix;
  
  import java.io.File;
  
  import org.apache.tools.ant.BuildException;
  
  /**
   * Chown equivalent for unix-like environments.
   *
   * @author Patrick G. Heck 
   *         <a href="mailto:gus.heck@olin.edu">gus.heck@olin.edu</a>
   *
   * @since Ant 1.6
   *
   * @ant.task category="filesystem"
   */
  public class Chown extends AbstractAccessTask {
  
      private boolean haveOwner = false;
  
      /**
       * Chown task for setting file and directory permissions.
       */
      public Chown() {
          super.setExecutable("chown");
      }
  
      /**
       * Set the owner atribute.
       *
       * @param owner    The new owner for the file(s) or directory(ies)
       */
      public void setOwner(String owner) {
          createArg().setValue(owner);
          haveOwner = true;
      }
  
      protected void checkConfiguration() {
          if (!haveOwner) {
              throw new BuildException("Required attribute owner not set in" +
                                       " chown", getLocation());
          }
          super.checkConfiguration();
      }
  
      /**
       * We don't want to expose the executable atribute, so overide it.
       */
      public void setExecutable(String e) {
          throw new BuildException(taskType +
                                   " doesn\'t support the executable attribute",
                                   getLocation());
      }
  }
  
  
  

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