ant/src/etc/testcases/taskdefs/optional/replaceregexp.xml

<project name="test" default="def" basedir=".">
  <property name="tmpregexp" value="tmpregexp"/>
  <target name="def">
    <fail>This build file should only be run from within the testcase</fail>
  </target>

  <target name="setup">
    <copy file="replaceregexp.properties" tofile="test.properties" />
  </target>

  <target name="setup-nl">
    <copy file="replaceregexp2.properties" tofile="test.properties" />
  </target>

  <target name="testReplace" depends="setup">
    <replaceregexp file="test.properties" byline="true">
      <regexp pattern="Old(.*)=(.*)" />
      <substitution expression="NewProp=\1\2" />
    </replaceregexp>
  </target>
  <!-- use in conjunction with testDirectoryDateDoesNotChange to make sure something will happen -->
  <target name="touchDirectory">
    <mkdir dir="${tmpregexp}"/>
    <copy file="replaceregexp.properties" tofile="${tmpregexp}/test.properties" />
    <sleep seconds="2"/>
  </target>
  <target name="testDirectoryDateDoesNotChange">
    <replaceregexp file="${tmpregexp}/test.properties" byline="true">
      <regexp pattern="foo" />
        <substitution expression="bar"/>
      </replaceregexp>
  </target>

  <target name="testDontAddNewline1" depends="setup-nl">
    <replaceregexp file="test.properties" byline="false">
      <regexp pattern="Old(.*)=(.*)" />
      <substitution expression="NewProp=\1\2" />
    </replaceregexp>
  </target>

  <target name="testDontAddNewline2" depends="setup-nl">
    <replaceregexp file="test.properties" byline="true">
      <regexp pattern="Old(.*)=(.*)" />
      <substitution expression="NewProp=\1\2" />
    </replaceregexp>
  </target>

  <target name="cleanup">
    <delete file="test.properties" />
    <delete dir="${tmpregexp}" quiet="true"/>
  </target>

</project>