ant/patch.xml

<?xml version="1.0"?>

<!--
  =======================================================================
   Use Apache Ant to generate a patch file for Apache Ant.

   Copyright (c) 2003 The Apache Software Foundation.  All rights
   reserved.

  =======================================================================
-->
<project name="create-patch" default="patchpackage" basedir=".">
    <property environment="env"/>
    <property name="patch.package" value="patch.tar.gz"/>
    <property name="patch.file" value="patch.txt"/>

    <condition property="cvs.found">
      <or>
        <available file="cvs"     filepath="${env.PATH}"/>
        <available file="cvs.exe" filepath="${env.PATH}"/>
        <available file="cvs.exe" filepath="${env.Path}"/>
      </or>
    </condition>

    <target name="createpatch" if="cvs.found">
        <cvs command="-q diff -u" output="${patch.file}"/>
    </target>

    <target name="newfiles" depends="createpatch">
        <delete file="${patch.package}"/>
        <cvs command="-q diff -N" output="${patch.file}.tmp"/>
        <replace file="${patch.file}.tmp" token="? " value=""/>
    </target>

    <target name="patchpackage" depends="newfiles">
        <tar basedir="${basedir}"
            tarfile="${patch.package}"
            compression="gzip"
            includesfile="${patch.file}.tmp"
            excludes="${patch.file}.tmp"/>
        <delete file="${patch.file}.tmp"/>
    </target>
</project>