Creating a config list of classpath jars in ant

I have a list of jars in an ant task like this..

  <path id="lib.path.id">
    <fileset dir="${lib.dir}">
      <include name="jar/*.jar"/>
    </fileset>
  </path>

I want to开发者_开发百科 unroll this into a config file like this..

wrapper.java.classpath.1=../lib/activation.jar
wrapper.java.classpath.2=../lib/bcel.jar
wrapper.java.classpath.3=../lib/c3p0-0.8.4.5.jar
wrapper.java.classpath.4=../lib/cglib-full-2.0.2.jar
....

How can I do this in ant?

As explained in my comment, if you are using Tanuki Service Wrapper for Java, you are not forced to list all your jar in the wrapper.conf, you can simply indicate a path that contains all your JAR files:

wrapper.java.classpath.1=/path/to/lib/*.jar
wrapper.java.classpath.2=/any/other/lib/directory/*.jar
wrapper.java.classpath.3=/a/path/to/one/library/my-library.jar
...

In Ant you can use the pathconvert task in order to convert the path collection to a String. Then you can use it in your config file. It won't be in the exact format you specified, but it will be in a proper classpath format, ready to use for a java command.

<pathconvert targetos="unix" property="wrapper.java.classpath" refid="lib.path.id"/>

To create a properties file use the propertyfile task:

<propertyfile file="my.properties">
  <entry  key="wrapper.java.classpath" value="${wrapper.java.classpath}"/>
</propertyfile>

Eran hinted the right direction. I am using the ant.library.dir as an example.

<project name="util">

<property name="lib.dir" value="${ant.library.dir}"/>

<target name="gen-property-file" description="">

    <path id="lib.path.id">
        <fileset dir="${lib.dir}">
            <include name="*.jar"/>
        </fileset>
    </path>

    <pathconvert pathsep="${line.separator}wrapper.java.classpath.Number="             
        property="echo.path.compile"             
        refid="lib.path.id">
    </pathconvert>

    <echo file="my.properties">wrapper.java.classpath.Number=${echo.path.compile}</echo>

</target>

This snippet procudes an file my.properties:

wrapper.java.classpath.Number=D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-antlr.jar
wrapper.java.classpath.Number=D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-bcel.jar
wrapper.java.classpath.Number=D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-bsf.jar
wrapper.java.classpath.Number=D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-log4j.jar
wrapper.java.classpath.Number=D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-oro.jar
wrapper.java.classpath.Number=D:\Programme\eclipse-rcp-helios-SR1-win32\eclipse\plugins\org.apache.ant_1.7.1.v20100518-1145\lib\ant-apache-regexp.jar
wrapper.java.classpath.Number=D:\Programme\eclipse-rcp-helios-SR1-win32

...

You can replace the .Number and the Basepath manually or with a script.