assets.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="assets">
  <property name="assets.dir" value="assets"/>
  <property name="assets.list.name" value="assets.lst"/>
  <property name="assets.hash.type" value="md5"/>
  <property name="assets.ctl.files"
    value="**/*.${assets.hash.type},${assets.list.name}"/>

  <fileset id="assets" dir="${assets.dir}" excludes="${assets.ctl.files}"/>

  <target name="clean">
    <delete>
      <fileset dir="assets" includes="${assets.ctl.files}"/>
    </delete>
  </target>

  <target name="list">
    <pathconvert
      dirsep="/" pathsep="${line.separator}"
      refid="assets" property="asset.list">
      <map from="${basedir}/${assets.dir}/" to=""/>
    </pathconvert>
    <echo message="${asset.list}" file="${assets.dir}/${assets.list.name}"/>
  </target>

  <target name="checksum">
    <checksum algorithm="${assets.hash.type}">
      <fileset refid="assets"/>
    </checksum>
  </target>
</project>