Generate MetaData with ANT

Question

I have a folder structure that contains multiple javascript files, each of these files need a standard piece of text at the top = //@include "includes.js"

Each folder needs to contain a file named includes.js that has an include entry for each file in its directory and and entry for the include file in its parent directory.

I'm trying to achive this using ant and its not going too well. So far I have the following, which does the job of inserting the header but not without actually moving or copying the file. I have heard people mentioning the <replace> task to do this but am a bit stumped.

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

<project name="JavaContentAssist" default="start" basedir=".">

    <taskdef resource="net/sf/antcontrib/antcontrib.properties">
      <classpath>
        <pathelement location="C:/dr_workspaces/Maven Repository/.m2/repository/ant-contrib/ant-contrib/20020829/ant-contrib-20020829.jar"/>
      </classpath>
    </taskdef>

    <target name="start">

        <foreach target="strip" param="file">

            <fileset dir="${basedir}">
                <include name="**/*.js"/>
                <exclude name="**/includes.js"/>
            </fileset>

        </foreach>

    </target> 

    <target name="strip">

        <move file="${file}" tofile="${a_location}" overwrite="true">

            <filterchain>
                <striplinecomments>
                    <comment value="//@" />
                </striplinecomments>
                <concatfilter prepend="${basedir}/header.txt">
                </concatfilter>
            </filterchain>
        </move>


    </target>

</project> 

As for the generation of the include files in the dir I'm not sure where to start at all. I'd appreciate if somebody could point me in the right direction.

Answer 1

This seems to satisfy the problem description:

<project default="addincludes">
  <taskdef resource="net/sf/antcontrib/antcontrib.properties">
    <classpath>
      <pathelement location="ant-contrib/ant-contrib-1.0b3.jar"/>
    </classpath>
  </taskdef>

  <target name="addincludes">
    <foreach target="perdir" param="dir">
      <path>
        <dirset dir="src" includes="**"/>
      </path>
    </foreach>
  </target>

  <target name="perdir">
    <echo file="${dir}/includes.js">//@include "../includes.js"&#10;</echo>
    <foreach target="perfile" param="file">
      <path>
        <fileset dir="${dir}" includes="*.js" excludes="includes.js"/>
      </path>
    </foreach>
  </target>

  <target name="perfile">
    <basename property="basename" file="${file}"/>
    <echo file="${dir}/includes.js" append="true">//@include "${basename}"&#10;</echo>
    <move file="${file}" tofile="${file}.tmp" overwrite="true">
      <filterchain>
        <striplinecomments>
          <comment value="//@" />
        </striplinecomments>
        <concatfilter prepend="header.txt"/>
      </filterchain>
    </move>
    <move file="${file}.tmp" tofile="${file}" overwrite="true"/>
  </target>
</project>