build.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="CubeDisplay" default="makejar" basedir=".">
	<property file="build_info.properties"></property>
	
	<target name="update-revision">
		<propertyfile  file="build_info.properties">
			<entry key="build.revision.number" type="int" operation="+" value="1" pattern="00"/>
		</propertyfile>
	</target>
	
    <target name="makejar" description="Create a jar for the project">
        <antcall target="update-revision"></antcall>
    	<property name="build.number" value="${build.major.number}_r${build.revision.number}"/>
    	
		<replace file="plugin.yml" token="__build.number__" value="${build.number}"/>
    	 
    	<mkdir dir="target"></mkdir>
        <jar destfile="target/${ant.project.name}.jar">
            <fileset dir="bin"></fileset>
            <fileset file="plugin.yml"></fileset>
        </jar>
    	
    	<antcall target="current-number"></antcall>
    	
    	<replace file="plugin.yml" token="${build.number}" value="__build.number__"/>
    	
    </target>
	
	<target name="current-number">
		<echo>Current build number:${build.number}</echo>
	</target>

</project>