Documentation of <transform>.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268288 13f79535-47bb-0310-9956-ffa450edef68

docs/index.html

@@ -1218,6 +1218,7 @@ cannot be found, try jakarta-regexp.</p>
   <li><a href="#tar">Tar</a></li>
   <li><a href="#taskdef">Taskdef</a></li>
   <li><a href="#touch">Touch</a></li>
+  <li><a href="#transform">Transform</a></li>
   <li><a href="#tstamp">Tstamp</a></li>
   <li><a href="#unzip">Unjar</a></li>
   <li><a href="#untar">Untar</a></li>
@@ -2174,7 +2175,7 @@ href="index.html#arg">Command line arguments</a>.</p>
 <h4>srcfile</h4>
 <p>By default the file names of the source files will be added to the
 end of the command line. If you need to place it somewhere different,
-use a nested <code>&lt;srcfile&gt; element between your
+use a nested <code>&lt;srcfile&gt;</code> element between your
 <code>&lt;arg&gt;</code> elements to mark the insertion point.</code>
 <h4>env</h4>
 <p>It is possible to specify environment variables to pass to the
@@ -4498,6 +4499,123 @@ modification time to the current time.</p>
 modification time to Jun, 28 2000 2:02 pm (14:02 for those used to 24
 hour times).</p>
 <hr>
+<h2><a name="transform">Transform</a></h2>
+<h3>Description</h3>
+<p>Executes a system command. When the <i>os</i> attribute is specified, then
+the command is only executed when Ant is run on one of the specified operating
+systems.</p>
+<p>The files and/or directories of a number of <a
+href="#fileset">FileSet</a>s are passed as arguments to the system
+command. The timestamp of each source file is compared to the
+timestamp of a target file which is defined by a nested <a
+href="#mapper">mapper</a> element. At least one fileset and exactly
+one mapper element are required.</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">executable</td>
+    <td valign="top">the command to execute without any command line
+      arguments.</td>
+    <td align="center" valign="top">Yes</td>
+  </tr>
+  <tr>
+    <td valign="top">dest</td>
+    <td valign="top">the directory where the target files will be placed.</td>
+    <td align="center" valign="top">Yes</td>
+  </tr>
+  <tr>
+    <td valign="top">dir</td>
+    <td valign="top">the directory in which the command should be executed.</td>
+    <td align="center" valign="top">No</td>
+  </tr>
+  <tr>
+    <td valign="top">os</td>
+    <td valign="top">list of Operating Systems on which the command may be
+      executed.</td>
+    <td align="center" valign="top">No</td>
+  </tr>
+  <tr>
+    <td valign="top">output</td>
+    <td valign="top">the file to which the output of the command should be
+      redirected.</td>
+    <td align="center" valign="top">No</td>
+  </tr>
+  <tr>
+    <td valign="top">timeout</td>
+    <td valign="top">Stop the command if it doesn't finish within the
+      specified time (given in milliseconds).</td>
+    <td align="center" valign="top">No</td>
+  </tr>
+  <tr>
+    <td valign="top">failonerror</td>
+    <td valign="top">Stop the buildprocess if the command exits with a
+      returncode other than 0.</td>
+    <td align="center" valign="top">No</td>
+  </tr>
+  <tr>
+    <td valign="top">parallel</td>
+    <td valign="top">Run the command only once, appending all files as
+      arguments. Defaults to true. If false, command will be executed
+      once for every file.</td>
+    <td align="center" valign="top">No</td>
+  </tr>
+  <tr>
+    <td valign="top">type</td>
+    <td valign="top">One of <em>file</em>, <em>dir</em> or
+      <em>both</em>. If set to <em>file</em>, only the names of plain
+      files will be sent to the command. If set to <em>dir</em>, only
+      the names of directories are considered.</td>
+    <td align="center" valign="top">No, default is <em>file</em></td>
+  </tr>
+</table>
+<h3>Parameters specified as nested elements</h3>
+<h4>fileset</h4>
+<p>You can use any number of nested <code>&lt;fileset&gt;</code>
+elements to define the files for this task and refer to
+<code>&lt;fileset&gt;</code>s defined elsewhere.</p>
+<h4>arg</h4>
+<p>Command line arguments should be specified as nested
+<code>&lt;arg&gt;</code> elements. See <a
+href="index.html#arg">Command line arguments</a>.</p>
+<h4>srcfile</h4>
+<p>By default the file names of the source files will be added to the
+end of the command line. If you need to place it somewhere different,
+use a nested <code>&lt;srcfile&gt;</code> element between your
+<code>&lt;arg&gt;</code> elements to mark the insertion point.</code>
+<h4>targetfile</h4>
+<p><code>&lt;targetfile&gt;</code> is similar to
+<code>&lt;srcfile&gt;</code> and marks the position of the target
+filename on the command line. If omitted, the target filenames will
+not be added to the command line at all.</p>
+<h4>env</h4>
+<p>It is possible to specify environment variables to pass to the
+system command via nested <code>&lt;env&gt;</code> elements. See the
+description in the section about <a href="#env">exec</a></p>
+<p>Please note that the environment of the current Ant process is
+<b>not</b> passed to the system command if you specify variables using
+<code>&lt;env&gt;</code>.</p>
+<h3>Examples</h3>
+<blockquote><pre>
+&lt;transform executable=&quot;cc&quot; dest=&quot;src/C&quot; parallel=&quot;false&quot;&gt;
+  &lt;arg value=&quot;-c&quot; /&gt;
+  &lt;arg value=&quot;-o&quot; /&gt;
+  &lt;targetfile/&gt;
+  &lt;srcfile/&gt;
+  &lt;fileset dir=&quot;src/C&quot; includes=&quot;*.c&quot; /&gt;
+  &lt;mapper type=&quot;glob&quot; from=&quot;*.c&quot; to=&quot;*.o&quot; /&gt;
+&lt;/transform&gt;
+</pre></blockquote>
+<p>invokes <code>cc -c -o TARGETFILE SOURCEFILE</code> for each
+<code>.c</code> file that is newer than the corresponding
+<code>.o</code>, replacing TARGETFILE with the absolute filename of
+the <code>.o</code> and SOURCEFILE with the absolute name of the
+<code>.c</code> file.</p>
+<hr>
 <h2><a name="tstamp">Tstamp</a></h2>
 <h3>Description</h3>
 <p>Sets the DSTAMP, TSTAMP and TODAY properties in the current project. The