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From "David Weintraub" <>
Subject Re: Variables and zip file comments
Date Wed, 28 Nov 2007 01:00:02 GMT
You cannot reset the value of a property. They are not variables because
they don't vary. Once you set the value of a property, you cannot change it.
There are a couple of ways to handle what you want:
* Use <antcall> or <macrodef>. These allow you to pass parameters that will
set properties inside the calls. See the example below.

* Use the AntContrib's variable task. This (unlike <properties> is a true

Here's how to use <antcall> to be able to change the comment. <macrodef> is
very similar:

<target name="main">
    <antcall target="ziptask">
        <param name="zipComment" value="Comment #1"/>
        <param name="zipDir" value="mydir1"/>
        <param name="zipName" value=""/>

    <antcall task="ziptask">
        <param name="zipComment" value="Comment #2"/>
        <param name="zipDir" value="mydir2"/>
        <param name="zipName" value=""/>

<target name="ziptask">
    <zip destfile="${zipName}"

On Nov 27, 2007 1:15 PM, Chuck Holzwarth <> wrote:

> The builds I do are differential builds. I use svn diff to gather the
> diffs. The system is composed of several modules. Each module goes into its
> own zip file. When code is released, the zip files require a comment that
> contains, among other things, the names of all of the zip files that are
> part of the release.
> I have been trying to set a variable with the list of module file names.
> The problem I have is that when the target where I set the variable exits,
> the variable reverts to the previous value. Is there a way to make a
> variable persistent?
> In the mean time, I have been creating a file that contains the zip file
> comment. I have not been able to insert the comment in the zip file using
> the zip comment function.
> Can anyone provide an example of reading a file, carriage returns and all,
> into a variable or property and adding to the zip file as a comment?
> Can anyone provide an example of using the zip target to add the contents
> of a file to the zip file as a comment?
> Thank you,
> Chuck Holzwarth
>  ____________________________________________________________________________________
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David Weintraub

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