Success!
David Weintraub wrote:
>
> Would using the <touch> task help? Before unzipping, you can "touch"
> all the properties files that you don't want to overwrite, giving them
> a newer timestamp than the files inside the zipfile.
>
> Of course, you'll destroy the previous dates, but it will help prevent
> overwriting.
>
Good suggestion, but we couldn't do this as timestamp of files is important
in our implementation.
> The other possibility is to test for the config properties files, and
> if they don't exist, unzip normally. If they do exist, use the exclude
> pattern. Here's a very rough and untested way of doing it:
>
> The unzip task now simply tests to see whether or not you have
> properties files. If you do, you do the unzip.selected and skip
> unpacking the properties files. If you don't, you use the "unzip.all"
> task and skip over the properties files.
>
OK. Here is a tested way of doing this and is working in initial testing.
Hope this helps someone else too.
<target name="writeon">
<!-- This assumes that you either have all the config/setup#.properties
files or none of them -->
<fileset id="config.files" dir="${APPLICATION_DIRECTORY}">
<include name="config/setup1.properties"/>
<include name="config/setup2.properties"/>
<include name="config/setup3.properties"/>
</fileset>
<condition property="config.properties.exist">
<resourcecount refid="config.files" when="greater" count="0"/>
</condition>
<antcall target="writeon.all"/>
<antcall target="writeon.selected"/>
</target>
<target name="writeon.all" unless="config.properties.exist">
<!-- unzip the package and overwrite the config/setup#.properties; they
shouldn't be there -->
<!-- overwrite="false" only works when the timestamp is NEWER, not OLDER
-->
<unzip dest="${APPLICATION_DIRECTORY}" overwrite="false">
<fileset dir="${TMP_DIR}">
<include name="*.zip"/>
</fileset>
</unzip>
</target>
<target name="writeon.selected" if="config.properties.exist">
<!-- unzip the package, but don't overwrite the config/setup#.properties
-->
<!-- overwrite="false" only works when the timestamp is NEWER, not OLDER
-->
<unzip dest="${APPLICATION_DIRECTORY}" overwrite="false">
<patternset>
<exclude name="config/*.properties"/>
</patternset>
<fileset dir="${TMP_DIR}">
<include name="*.zip"/>
</fileset>
</unzip>
</target>
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