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  1. PO
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    <p>I pretty sure there isn't a way to generically call a task for each file without either creating your own <a href="http://ant.apache.org/manual/develop.html" rel="nofollow">custom task</a> or using <a href="http://ant-contrib.sourceforge.net/" rel="nofollow">ant-contrib</a>. However there are ways to get ant to automatically retrieve ant-contrib (or a custom jar) so you can achieve the desired result. This is the approach used by <a href="https://windyroad.assembla.com/spaces/tibant/trac_mercurial_tool" rel="nofollow">TIBant</a>, which has a similar requirement (so that it's easy for anyone to contribute to the development),</p> <p><strong>Step 1: Download Apache Ivy</strong></p> <p>Apache Ivy can be used to retrieve dependencies such as ant-contrib. I use the following ant properties and target to download and load Ivy</p> <pre><code>&lt;property name="ivy.install.version" value="2.2.0" /&gt; &lt;property name="ivy.jar.dir" location="${user.home}/.ivy2/jars" /&gt; &lt;property name="ivy.jar.file" location="${ivy.jar.dir}/ivy-${ivy.install.version}.jar" /&gt; &lt;target name="-download-ivy" unless="ivy.downloaded"&gt; &lt;mkdir dir="${ivy.jar.dir}" /&gt; &lt;!-- download Ivy from web site so that it can be used even without any special installation --&gt; &lt;echo message="installing ivy..." /&gt; &lt;get src="http://repo1.maven.org/maven2/org/apache/ivy/ivy/${ivy.install.version}/ivy-${ivy.install.version}.jar" dest="${ivy.jar.file}" usetimestamp="true" verbose="true" /&gt; &lt;/target&gt; &lt;target name="-check-ivy-downloaded"&gt; &lt;condition property="ivy.downloaded"&gt; &lt;and&gt; &lt;available file="${ivy.jar.file}" /&gt; &lt;available file="${ivy.jar.dir}/jsch-0.1.44-1.jar" /&gt; &lt;/and&gt; &lt;/condition&gt; &lt;/target&gt; &lt;target name="-load-ivy" depends="-check-ivy-downloaded,-download-ivy" unless="ivy.loaded"&gt; &lt;path id="ivy.lib.path"&gt; &lt;fileset dir="${ivy.jar.dir}" includes="*.jar" /&gt; &lt;/path&gt; &lt;taskdef resource="org/apache/ivy/ant/antlib.xml" uri="antlib:org.apache.ivy.ant" classpathref="ivy.lib.path" /&gt; &lt;property name="ivy.loaded" value="true" /&gt; &lt;/target&gt; </code></pre> <p><strong>Step 2: Add ant-contrib dependency</strong></p> <p>Ivy uses an "ivy file" for specifying dependencies. You can add ant-contrib as follows</p> <pre><code> &lt;dependency org="ant-contrib" name="ant-contrib" rev="1.0b3" transitive="false"/&gt; </code></pre> <p>a full ivy file might look like</p> <pre><code>&lt;?xml version="1.0" encoding="ISO-8859-1"?&gt; &lt;ivy-module version="2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://ant.apache.org/ivy/schemas/ivy.xsd"&gt; &lt;info organisation="org.my" module="mymodule" status="release"/&gt; &lt;dependencies&gt; &lt;dependency org="ant-contrib" name="ant-contrib" rev="1.0b3" transitive="false"/&gt; &lt;/dependencies&gt; &lt;/ivy-module&gt; </code></pre> <p>You could also output this file dynamically from your ant script using <a href="http://file://localhost/Users/tomhoward/Documents/apache-ant-1.8.1/CoreTasks/echoxml.html" rel="nofollow">echoxml</a></p> <p><strong>Step 3: Retrieve the dependencies</strong></p> <p>Use Ivy to download <code>ant-contrib</code> (or whatever dependencies you have specified)</p> <pre><code>&lt;target name="retrieve" description="retrieve dependancies with ivy" depends="-load-ivy"&gt; &lt;ivy:retrieve /&gt; &lt;ivy:artifactproperty name="[module].[artifact]" value="lib/[artifact]-[revision].[ext]" /&gt; &lt;/target&gt; </code></pre> <p><strong>Step 4: Load <code>ant-contrib</code></strong></p> <pre><code>&lt;target name="-load-ant-contrib" depends="retrieve" unless="ant.contrib.loaded"&gt; &lt;taskdef resource="net/sf/antcontrib/antlib.xml"&gt; &lt;classpath&gt; &lt;pathelement location="${ant-contrib.ant-contrib}" /&gt; &lt;/classpath&gt; &lt;/taskdef&gt; &lt;property name="ant.contrib.loaded" value="true" /&gt; &lt;/target&gt; </code></pre> <p><strong>Step 5: Create your target that iterates over the files using <code>for</code></strong></p> <pre><code>&lt;target name="mytarget" depends="-load-ant-contrib"&gt; &lt;for param="file"&gt; &lt;fileset dir="somedir" includes="..." /&gt; &lt;sequential&gt; &lt;!-- do stuff with @{file} --&gt; &lt;/sequential&gt; &lt;/for&gt; &lt;/target&gt; </code></pre> <p>If you only need to download ant-contrib and don't want to use Ivy to manage other dependencies, then you can skip most of the above and just use a <a href="http://file://localhost/Users/tomhoward/Documents/apache-ant-1.8.1/CoreTasks/get.html" rel="nofollow">get</a> to download <code>ant-contrib</code> in the same way the above downloads Ivy.</p>
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    1. COThanks for your answer!!!
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    2. COIt does not quite answer my question, but it provides a nice solution/alternative for my problem! Thx for that
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