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<title>PathConvert Task</title>
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<body>

<h2><a name="pathconvert">Pathconvert</a></h2>
<h3>Description</h3>
<p>Converts nested <a href="../CoreTypes/resources.html#collection">
ResourceCollection</a>s, or a reference to just one, into a path
form for a particular platform, optionally storing the result into
a given property. It can also be used when you need
to convert a Resource Collection into a list, separated by a given
character, such as a comma or space, or, conversely, e.g. to convert a list
of files in a FileList into a path.
</p>
<p>Nested <code>&lt;map&gt;</code> elements can be specified to map Windows
drive letters to Unix paths, and vice-versa.</p>
<p>More complex transformations can be achieved using a nested
<a href="../CoreTypes/mapper.html"><code>&lt;mapper&gt;</code></a>
(since Ant 1.6.2).
</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">targetos</td>
    <td valign="top">
        The target architecture.  Must be one of 'unix', 'windows', 
        'netware', 'tandem' or 'os/2'.
        This is a shorthand mechanism for specifying both
        <code>pathsep</code> and <code>dirsep</code>
        according to the specified target architecture.
    </td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr>
    <td valign="top">dirsep</td>
    <td valign="top">
       The character(s) to use as the directory separator in the
       generated paths.
    </td>
    <td valign="top" align="center">No, defaults to current JVM <tt>File.separator</tt></td>
  </tr>
  <tr>
    <td valign="top">pathsep</td>
    <td valign="top">
       The character(s) to use as the path-element separator in the
       generated paths.
    </td>
    <td valign="top" align="center">No, defaults to current JVM <tt>File.pathSeparator</tt></td>
  </tr>
  <tr>
    <td valign="top">property</td>
    <td valign="top">The name of the property in which to place the converted path.</td>
    <td valign="top" align="center">No, result will be logged if unset</td>
  </tr>
  <tr>
    <td valign="top">refid</td>
    <td valign="top">What to convert, given as a
        <a href="../using.html#references">reference</a> to a
        <code>&lt;path&gt;</code>, <code>&lt;fileset&gt;</code>,
        <code>&lt;dirset&gt;</code>, or <code>&lt;filelist&gt;</code>
        defined elsewhere</td>
    <td valign="top" align="center">No; if omitted, a nested
        <code>&lt;path&gt;</code> element must be supplied.</td>
  </tr>
    <td valign="top">setonempty</td>
    <td valign="top">Should the property be set, even if the result
      is the empty string?
    <td valign="top" align="center">No; default is &quot;true&quot;.
  </tr>
</table>
<h3>Parameters specified as nested elements</h3>
<h4>map</h4>
<p>Specifies the mapping of path prefixes between Unix and Windows.</p>
<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">from</td>
    <td valign="top">
      The prefix to match.  Note that this value is case-insensitive when
      the build is running on a Windows platform and case-sensitive 
      when running on a Unix platform.
      <em>Since Ant 1.7.0</em>, on Windows this value is also insensitive
      to the slash style used for directories, one can use '/' or '\'.
    </td>
    <td valign="top" align="center">Yes</td>
  </tr>
  <tr>
    <td valign="top">to</td>
    <td valign="top">The replacement text to use when <code>from</code> is matched.</td>
    <td valign="top" align="center">Yes</td>
  </tr>
</table>

<p>Each map element specifies a single replacement map to be applied to the elements of
   the path being processed.  If no map entries are specified, then no path prefix mapping
   is performed.
</p>
<p><strong>Note</strong>: The map elements are applied in the order specified,
and only the first matching map element is applied.  So, the ordering of
your map elements can be important, if any <code>from</code> values are
prefixes of other <code>from</code> values.</i>
</p>   
<h4>Resource Collections</h4>
<p>If the <code>refid</code> attribute is not specified, then one or more
   nested <a href="../CoreTypes/resources.html#collection">Resource
Collection</a>s must be supplied.</p>
<h4>mapper</h4>
<p>A single nested <a href="../CoreTypes/mapper.html">
<code>&lt;mapper&gt;</code></a> element can be specified
to perform any of various filename transformations (since Ant 1.6.2).
</p>

<h3>Examples</h3>
<p>In the examples below, assume that the <code>${wl.home}</code> property
has the value
<code>d:\weblogic</code>, and <code>${wl.home.unix}</code> has the value
<code>/weblogic</code>.</p>
<h4>Example 1</h4>
<pre>
    &lt;path id="wl.path"&gt;
      &lt;pathelement location=&quot;${wl.home}/lib/weblogicaux.jar&quot;/&gt;
      &lt;pathelement location=&quot;${wl.home}/classes&quot;/&gt;
      &lt;pathelement location=&quot;${wl.home}/mssqlserver4/classes&quot;/&gt;
      &lt;pathelement location=&quot;c:\winnt\System32&quot;/&gt;
    &lt;/path&gt;
    
    &lt;pathconvert targetos=&quot;unix&quot; property=&quot;wl.path.unix&quot; refid=&quot;wl.path&quot;&gt;
      &lt;map from=&quot;${wl.home}&quot; to=&quot;${wl.home.unix}&quot;/&gt;
      &lt;map from=&quot;c:&quot; to=&quot;&quot;/&gt;
    &lt;/pathconvert&gt;
</pre>
<p> will generate the path shown below
and store it in the property named <code>wl.path.unix</code>.
</p>   
<pre>
/weblogic/lib/weblogicaux.jar:/weblogic/classes:/weblogic/mssqlserver4/classes:/WINNT/SYSTEM32
</pre>

<h4>Example 2</h4>
Given a FileList defined as:
<pre>
  &lt;filelist id=&quot;custom_tasks.jars&quot;
        dir=&quot;${env.HOME}/ant/lib&quot;
        files=&quot;njavac.jar,xproperty.jar&quot;/&gt;
</pre>
then:
<pre>
    &lt;pathconvert targetos=&quot;unix&quot; property=&quot;custom_tasks.jars&quot; refid=&quot;custom_tasks.jars&quot;&gt;
      &lt;map from=&quot;${env.HOME}&quot; to=&quot;/usr/local&quot;/&gt;
    &lt;/pathconvert&gt;
</pre>
will convert the list of files to the following Unix path:
<pre>
/usr/local/ant/lib/njavac.jar:/usr/local/ant/lib/xproperty.jar
</pre>

<h4>Example 3</h4>
<pre>
    &lt;fileset dir=&quot;${src.dir}&quot; id=&quot;src.files&quot;&gt;
      &lt;include name=&quot;**/*.java&quot;/&gt;
    &lt;/fileset&gt;
  
    &lt;pathconvert pathsep=&quot;,&quot; property=&quot;javafiles&quot; refid=&quot;src.files&quot;/&gt;
</pre>
<p>This example takes the set of files determined by the fileset (all files ending
in <tt>.java</tt>), joins them together separated by commas, and places the resulting
list into the property <tt>javafiles</tt>.  The directory separator is not specified, so
it defaults to the appropriate character for the current platform.  Such a list could
then be used in another task, like <tt>javadoc</tt>, that requires a comma separated
list of files.
</p>
<h4>Example 4</h4>
<pre>
    &lt;pathconvert property="prop" dirsep="|"&gt;
      &lt;map from="${basedir}/abc/" to=''/&gt;
      &lt;path location="abc/def/ghi"/&gt;
    &lt;/pathconvert&gt;
</pre>
  <p>
    This example sets the property "prop" to "def|ghi" on
    Windows and on Unix.
  </p>
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