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Exclude files with Ant
<project name="MyProject" default="build" basedir=".">
<property name="buildDir"   value="${basedir}/build"/>
<property name="componente" value="${basedir}/trunk/componente"/>
<property name="backend"    value="${componente}/backend"/>
<property name="frontend"   value="${componente}/frontend"/>

<target name="build" depends="cleanup, pro, free" />

<!-- Clean up the build directory output -->
<target name="cleanup">
    <echo>Clean up build directory</echo>
    <delete includeemptydirs="true">
        <fileset dir="${buildDir}" includes="**/*"/>
    </delete>
</target>

<!-- Create the pro package (no file exclusion) -->
<target name="pro">
    <echo>Build pro version</echo>
    <zip destfile="${buildDir}/pro.zip" basedir="${componente}" />
</target>

<!-- Create the free package (file exclusion) -->
<target name="free">
    <echo>Build free version</echo>
</target>

<zip destfile="${buildDir}/free.zip"
     basedir="${componente}"
     excludes="**/features/pro/**, **/other/**"/>

<fileset dir="${files.directory}" casesensitive="yes">
  <include name="**/*free.php"/>
  <exclude name="**/*pro.php"/>
</fileset>

<target name="free">
    <zip destfile="${buildDir}/pro.zip">
        <fileset dir="${componente}">
            <not>
                <containsregexp expression="@category[ t]+ProPackage"/>
            </not>
        </fileset>
    </zip>
</target>