I am wondering how I can extract selected directores from a zip file
while performing granular re-mapping of multiple directories. I have
tried various techniques with <unzip> but cannot find the case I'm
looking for.
The <zip> task allows the simple convenience re-mapping of directory
structures by using a nested <zipfileset> with the prefix attribute.
However, the <unzip> task is not the inverse of the <zip>. It is
treated as a special case of copy, requiring the use of patternsets and
mappers (along with the benefits and limitations thereof). Thus,
certain complex mappings that can be done with <zip> cannot conversely
be done in an <unzip>. Or so it appears to me.
For example, I have a zip file whose output needs to be mapped as
follows:
/en/html -> /root
/en/jsp -> /root
/static/pdf -> /root/pdf
The third mapping is different from the first two. Multiple mappers
would be needed to accomplish this, but it is not possible to nest
multiple mappers within a an <unzip> or <copy> (except in a chain, which
operates on all files, not just selected ones).
Here is my fantasy code that would accomplish the <unzip> as elegantly
as the <zip> can be peformed in actuality:
<unzip src="web.zip">
<zipfileset dir="en/html" includes="*" prefix="/root"/>
<zipfileset dir="en/jsp" includes="*" prefix="/root"/>
<zipfileset dir="static/pdf" includes="*" prefix="/root/pdf"/>
</unzip>
Have I missed some actual way of doing this in a simple and elegant
fashion? Otherwise I'm forced to unzip the entire archive and perform
many <copy> tasks at a granular level to perform the restructure.
Thanks in advance,
Carlton
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