youys
/
ant

 
			
							<!--
   Licensed to the Apache Software Foundation (ASF) under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
   the License.  You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
-->
<html>

<head>
<meta http-equiv="Content-Language" content="en-us">
<link rel="stylesheet" type="text/css" href="../stylesheets/style.css">
<title>Unzip Task</title>
</head>

<body>

<h2><a name="unzip">Unjar/Untar/Unwar/Unzip</a></h2>
<h3>Description</h3>
<p>Unzips a zip-, war-, or jar file.</p>
<p><a href="../CoreTypes/patternset.html">PatternSet</a>s are used to select files to extract
<I>from</I> the archive.  If no patternset is used, all files are extracted.
</p>

<p><a href="../CoreTypes/resources.html#collection">Resource
Collection</a>s may be used to select archived files to perform
unarchival upon.  Only file system based resource collections are
supported by Unjar/Unwar/Unzip, this includes <a
href="../CoreTypes/fileset.html">fileset</a>, <a
href="../CoreTypes/filelist.html">filelist</a>, <a
href="../using.html#path">path</a>, and <a
href="../CoreTypes/resources.html#files">files</a>.
Untar supports arbitrary resource collections.
Prior to Ant 1.7 only fileset has been supported as a nested element.</p>

<p>You can define filename transformations by using a nested <a href="../CoreTypes/mapper.html">mapper</a> element.  The default mapper is the
<a href="../CoreTypes/mapper.html#identity-mapper">identity mapper</a>.
</p>
<p>File permissions will not be restored on extracted files.</p>
<p>The untar task recognizes the long pathname entries used by GNU tar.<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">src</td>
    <td valign="top">archive file to expand.</td>
    <td align="center" valign="top">Yes, if filesets are not used.</td>
  </tr>
  <tr>
    <td valign="top">dest</td>
    <td valign="top">directory where to store the expanded files.</td>
    <td align="center" valign="top">Yes</td>
  </tr>
  <tr>
    <td valign="top">overwrite</td>
    <td valign="top">Overwrite files, even if they are newer than the
      corresponding entries in the archive (true or false, default is
      true).</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr>
    <td valign="top">compression</td>
    <td valign="top"><b>Note:</b> This attribute is only available for
    the <code>untar</code> task.<br>
    compression method.  Allowable values are &quot;none&quot;,
    &quot;gzip&quot; and &quot;bzip2&quot;.  Default is
    &quot;none&quot;.</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">encoding</td>
    <td valign="top"><b>Note:</b> This attribute is not available for
    the <code>untar</code> task.<br>
    The character encoding that has been used for filenames
    inside the zip file.  For a list of possible values see <a
    href="http://java.sun.com/j2se/1.5.0/docs/guide/intl/encoding.doc.html">http://java.sun.com/j2se/1.5.0/docs/guide/intl/encoding.doc.html</a>.<br>
    Defaults to &quot;UTF8&quot;, use the magic value
    <code>native-encoding</code> for the platform's default character
    encoding.</td>
    <td align="center" valign="top">No</td>
  </tr>

</table>
<h3>Examples</h3>
<pre>
&lt;unzip src=&quot;${tomcat_src}/tools-src.zip&quot; dest=&quot;${tools.home}&quot;/&gt;
</pre>
<p>
<pre>
&lt;gunzip src=&quot;tools.tar.gz&quot;/&gt;
&lt;untar src=&quot;tools.tar&quot; dest=&quot;${tools.home}&quot;/&gt;
</pre>
<pre>
&lt;unzip src=&quot;${tomcat_src}/tools-src.zip&quot;
       dest=&quot;${tools.home}&quot;&gt;
    &lt;patternset&gt;
        &lt;include name=&quot;**/*.java&quot;/&gt;
        &lt;exclude name=&quot;**/Test*.java&quot;/&gt;
    &lt;/patternset&gt;
&lt;/unzip&gt;
</pre>
<p>
<pre>
&lt;unzip dest=&quot;${tools.home}&quot;&gt;
    &lt;patternset&gt;
        &lt;include name=&quot;**/*.java&quot;/&gt;
        &lt;exclude name=&quot;**/Test*.java&quot;/&gt;
    &lt;/patternset&gt;
    &lt;fileset dir=&quot;.&quot;&gt;
        &lt;include name=&quot;**/*.zip&quot;/&gt;
        &lt;exclude name=&quot;**/tmp*.zip&quot;/&gt;
    &lt;/fileset&gt;
&lt;/unzip&gt;
</pre>
<p>
<pre>
&lt;unzip src=&quot;apache-ant-bin.zip&quot; dest=&quot;${tools.home}&quot;&gt;
    &lt;patternset&gt;
        &lt;include name=&quot;apache-ant/lib/ant.jar&quot;/&gt;
    &lt;/patternset&gt;
    &lt;mapper type=&quot;flatten&quot;/&gt;
&lt;/unzip&gt;
</pre>

<h3>Related tasks</h3>

<pre>
&lt;unzip src="some-archive" dest="some-dir"&gt;
  &lt;patternset&gt;
    &lt;include name="some-pattern"/&gt;
  &lt;/patternset&gt;
  &lt;mapper type=&quot;some-mapper&quot;/&gt;
&lt;/unzip&gt;
</pre>

is identical to

<pre>
&lt;copy todir="some-dir" preservelastmodified="true"&gt;
  &lt;zipfileset src="some-archive"&gt;
    &lt;patternset&gt;
      &lt;include name="some-pattern"/&gt;
    &lt;/patternset&gt;
  &lt;/zipfileset&gt;
  &lt;mapper type=&quot;some-mapper&quot;/&gt;
&lt;/copy&gt;
</pre>

<p>The same is also true for <code>&lt;untar&gt;</code> and
<code>&lt;tarfileset&gt;</code>.  <code>&lt;copy&gt;</code> offers
additional features like <a
href="../CoreTypes/filterchain.html">filtering files</a> on the fly,
allowing a file to be mapped to multiple destinations or a
configurable file system timestamp granularity.</p>


</body>
</html>