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<?xml version="1.0"?>
<project name="project">
	<condition property="legal.directory">
		<matches pattern="^/[^/]+/.*" string="${directory}"/>
	</condition>
	<target name="do.clear.directory" if="legal.directory">
		<delete includeemptydirs="true" quiet="true">
			<fileset dir="${directory}" includes="**/*" defaultexcludes="false"/>
		</delete>
	</target>
	<target name="dont.clear.directory" unless="legal.directory">
		<fail message="Directory &quot;${directory}&quot; is invalid"/>
	</target>
	<target name="clear.directory" depends="do.clear.directory,dont.clear.directory"/>
</project>