build.xml

<?xml version="1.0" encoding="UTF-8"?>

<project name="optipng-ant-task" default="all">

	<target name="-init" description="Common initialization">
		<property name="sourcedir"           value="src" />
		<property name="outputdir"           value="build" />
		<property name="javac.deprecation"   value="true"   />
		<property name="javac.compilerargs"  value="-Xlint" />
		<property name="javac.listfiles"     value="true"   />
		<property name="javac.encoding"      value="utf-8" />
		<property name="javac.targetvm"      value="1.5"   />
		<property name="javac.debug"         value="true"  />
		<property name="javac.optimize"      value="false" />
		<property name="javac.sourcedir"     value="${sourcedir}" />
		<property name="javac.outputdir"     value="${outputdir}/classes" />
		<property name="javac.includes"      value="**/*.java" />
		<property name="jar.filename"        value="${outputdir}/${ant.project.name}.jar" />
		<property name="project.description" value="OptiPNG Ant task" />
		<property name="project.vendor"      value="PensioenPage B.V." />
		<loadfile property="project.version" srcfile="VERSION">
			<filterchain>
				<striplinebreaks/>
			</filterchain>
		</loadfile>
		<property name="unittests.sourcedir"   value="${sourcedir}/unittests/input"    />
		<property name="unittests.expecteddir" value="${sourcedir}/unittests/expected" />
		<property name="unittests.outputdir"   value="${outputdir}/unittests"          />

		<echo level="verbose" message="Project: ${ant.project.name} (&quot;${project.description}&quot;) version ${project.version}" />
	</target>

	<target name="compile" depends="-init">
		<mkdir dir="${javac.outputdir}" />

		<javac encoding="${javac.encoding}"
		        destdir="${javac.outputdir}"
		          debug="${javac.debug}"
		    deprecation="${javac.deprecation}"
		       optimize="${javac.optimize}"
		         target="${javac.targetvm}"
		       includes="${javac.includes}"
		      listfiles="${javac.listfiles}">
			<compilerarg value="${javac.compilerargs}" />
			<src path="src" />
		</javac>
	</target>

	<target name="unittests" depends="compile" description="Runs all available unit tests">

		<taskdef name="optipng" classname="com.pensioenpage.jynx.optipng.OptiPNGTask" classpath="${javac.outputdir}" />

		<mkdir dir="${unittests.outputdir}" />

		<macrodef name="unittest">
			<attribute name="testnum" />
			<attribute name="process" />
			<attribute name="expected" default="${unittests.expecteddir}/@{testnum}.png" />
			<attribute name="actual"   default="${unittests.outputdir}/@{testnum}.png"       />

			<sequential>
				<optipng dir="${unittests.sourcedir}" includes="@{testnum}.png" todir="${unittests.outputdir}" process="@{process}" />
				<condition property="test@{testnum}.success">
					<filesmatch file1="@{expected}" file2="@{actual}" />
				</condition>
				<fail unless="test@{testnum}.success">Output file "@{actual}" differs from what was expected: "@{expected}".</fail>
			</sequential>
		</macrodef>

		<unittest testnum="1" process="true"  />
		<unittest testnum="2" process="false" />
	</target>

	<target name="jar" depends="compile">
		<jar jarfile="${jar.filename}" basedir="${javac.outputdir}">
			<manifest>
				<attribute name="Specification-Title"   value="${project.description}"/>
				<attribute name="Specification-Version" value="${project.version}"/>
				<attribute name="Specification-Vendor"  value="${project.vendor}"/>
				<attribute name="Implementation-Title"   value="${project.description}"/>
				<attribute name="Implementation-Version" value="${project.version}"/>
				<attribute name="Implementation-Vendor"  value="${project.vendor}"/>
			</manifest>
		</jar>
	</target>

	<target name="all" depends="compile,unittests,jar" description="Compiles, runs all unit tests and builds the JAR" />

	<target name="clean" depends="-init">
		<delete dir="${outputdir}" />
	</target>
</project>