Applying multiple .ditaval filters on the same .ditamap (automatically, using ANT)

ant-ditaot-macro.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!--
         To be published under the same terms as DITA-OT.

         This script allows to execute DITA-OT upon a set
         of automatically found .ditaval files, e. g. to
         build multiple editions of the same .ditamap
         project.

         To use this script in ANT, do the following:

	<include file="ant-ditaot-macro.xml" />

	<target name="PDFs">
		<dita-ot sourceFile="src/main/dita/my.ditamap" outputDir="target">
			<fileset dir="src/main/dita" includes="*.ditaval" />
		</dita-ot>
	</target>

         Note that this script is just a prototype and
         does not support lots of DITA-OT features.

         It is developed and tested solely with PDFs.

         Any improvements welcome! :-)

	Copyright © 2012 QUIPSY QUALITY GmbH & Co. KG

	Author(s):
		Markus KARG (karg@quipsy.de)
-->
<project name="ant-ditaot-macro">
	<property environment="env" />
	<property name="temp.dir" location="${env.TEMP}" />
	<property name="dita.dir" location="${env.DITA_HOME}" />

	<macrodef name="call-dita-ot">
		<attribute name="sourceFile" />
		<attribute name="filterFile" />
		<attribute name="outputDir" default="${basedir}" />
		<attribute name="outputName" />

		<!-- The below attributes are necessary because building those using <basedir/> is not possible when macro is called from script, as properties are GLOBAL then! -->
		<attribute name="filterName" />
		<attribute name="sourceName" />

		<sequential>
			<java classname="org.apache.tools.ant.launch.Launcher" fork="true" failonerror="true" taskname="dita-ot">
				<classpath>
					<pathelement location="${dita.dir}/tools/ant/lib/ant-launcher.jar" />
				</classpath>
				<arg value="-f" />
				<arg file="${dita.dir}/build.xml" />
				<arg value="-lib" />
				<arg value="${dita.dir}/tools/ant/lib;${dita.dir}/lib;${dita.dir}/lib/saxon" />
				<arg value="-Dbasedir=${basedir}" />
				<arg value="-Dargs.input=@{sourceFile}" />
				<arg value="-Ddita.input.valfile=@{filterFile}" />
				<arg value="-Doutput.dir=${env.TEMP}/ditaot/@{filterName}/out" />
				<arg value="-Dtranstype=pdf" />
				<arg value="-Ddita.temp.dir=${env.TEMP}/ditaot/@{filterName}/temp" />
			</java>
			<move file="${env.TEMP}/ditaot/@{filterName}/out/@{sourceName}.pdf" tofile="@{outputDir}/@{outputName}.pdf" />
		</sequential>
	</macrodef>

	<scriptdef name="dita-ot" language="javascript">
		<attribute name="sourceFile" />
		<attribute name="outputDir" />

		<element name="fileset" type="fileset" />

		<![CDATA[ 
			importClass(java.io.File); 

			sourceFile = attributes.get("sourcefile");
			outputDir = attributes.get("outputdir");
		
			sourceName = new File(sourceFile).getName().replaceFirst("[.][^.]+$", ""); // Strip file extension

			filesets = elements.get("fileset");
			fileSeparator = self.project.getProperty("file.separator");
		
			parallel = self.project.createTask("parallel");

			for (i = 0; i < filesets.size(); i++) { 
				fileset = filesets.get(i); 
				scanner = fileset.getDirectoryScanner(project); 
				scanner.scan(); 
				files = scanner.getIncludedFiles();
		
				for (j = 0; j < files.length; j++) {
					filterFile = fileset.getDir() + fileSeparator + files[j];
					filterName = new File(filterFile).getName().replaceFirst("[.][^.]+$", ""); // Strip file extension
					outputName = java.lang.String.format("%s (%s)", sourceName, filterName);
		
					macro = self.project.createTask("call-dita-ot");
					macro.setDynamicAttribute("sourcefile", sourceFile);
					macro.setDynamicAttribute("filterfile", filterFile);
					macro.setDynamicAttribute("outputdir", outputDir);
					macro.setDynamicAttribute("outputname", outputName);

					macro.setDynamicAttribute("sourcename", sourceName);
					macro.setDynamicAttribute("filtername", filterName);
		
					parallel.addTask(macro);
				} 
			}
		
			parallel.execute();
		]]>
	</scriptdef>
</project>