Hello.
I'm wondering if there is any information anywhere about how to program
your own custom tasks. I'm mostly interested in using a nested
patternset element.
The problem is that I need to extend a task written by someone else.
The task is called <genjar> and it basically is a jar task where you
specify the main class and the task extracts all the dependant classes
and includes them in the generated jar. In the <genjar> task you can
specify a <resource> tag which lets you include additional resources
that are not java class files (such as images, property files and so
on). The problem with the <resource> tag is that it doesn't allow me to
specify a <patternset> which would take all the matching files from the
classpath and include them also in the generated JAR file. To clarify,
let me give an example:
<genjar jarfile="test.jar">
<resource file="org/apache/xerces/readers/xcatalog.dtd" />
<resource>
<patternset>
<include name="**/*.gif"/>
<exclude name="**/*.class"/>
</patternset>
</resource>
<classpath>
<pathelement location="lib/xerces.jar"/>
<pathelement location="lib/a_really_big_jar.jar"/>
</classpath>
</genjar>
This should extract all .gif files from the JAR files in the classpath
and place them in the generated JAR file (test.jar).
The problem is of course that I have no experience in programming Ant
tasks and even though I've looked at the code in the <genjar> task I
can't begin to imagine where to start. So if anybody knows a good
"task programming tutorial" or is willing to help me out with this
problem I would be most greatful.
Kind regards, Stefan Freyr
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