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Subject: RE: replace an entry in a zip file?
Date: Thu, 14 Jun 2007 12:11:44 -0400
Message-ID: <32251DD60B0C1B4386EE15B0FA279A62060114C2@mercmbx08.na.sas.com>
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Thread-Topic: replace an entry in a zip file?
Thread-Index: AceuYV96mY3ZPKFiT5KLF2mH6P1NAgAA27MgAA4Q7hA=
From: "Cyril Sagan" <Cyril.Sagan@sas.com>
To: "Ant Users List" <user@ant.apache.org>
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Thanks for your reponse.  However, this does not work for me in Ant =
1.6.5.
Note that my goal is to *replace* a file that's already in the zip.

Seems like the best solution would be for the duplicate attribute to =
support a "replace" option.

FWIW, I'm doing this to control my jar manifest.  I can't use <jar> =
because Ant merges with its default manifest.  I'm having a hard time =
employing this advice from the Ant doc:

http://ant.apache.org/manual/CoreTasks/manifest.html

    If you find that Ant generates manifests incompatible with your
    runtime, take a manifest it has built, fix it up however you need
    and switch to using the <zip>  task to create the JAR, feeding in
    the hand-crafted manifest.

Here's my build.xml:

<?xml version=3D"1.0"?>
<project name=3D"manifest_test" default=3D"go">

    <target name=3D"go">
        <!-- build trivial sample jar -->   =20
        <mkdir dir=3D"work" />
        <touch file=3D"work/a" />
        <touch file=3D"work/b" />

        <jar jarfile=3D"test.jar" update=3D"true">
            <fileset dir=3D"work" includes=3D"**/*" />
        </jar>

        <!-- Use zip to add my manifest without having Ant -->
        <!-- try to merge with its default one, that is:   -->
        <!-- main/org/apache/tools/ant/defaultManifest.mf  -->
        <zip destfile=3D"test.jar" basedir=3D"work" update=3D"true">
            <zipfileset dir=3D"." includes=3D"my_manifest"
                                fullpath=3D"META-INF/MANIFEST.MF"/>
        </zip>
    </target>
</project>

Thanks.

--Cyril


-----Original Message-----
From: RADEMAKERS Tanguy [mailto:Tanguy.RADEMAKERS@swift.com]=20
Sent: Thursday, June 14, 2007 5:23 AM
To: Ant Users List
Subject: RE: replace an entry in a zip file?

Hello Cyril,

>GOAL:  To replace one entry in a zip file with an updated file.
>
>I cannot find an elegant way to do this, short of <unzip>'ing the=20
>archive, replacing the file of interest and then re-<zip>.  It seems=20
>there should be a better way.  Can anyone help?
>
>Thanks.
>
>--Cyril

If you use the update attribute of the zip task - it will "refresh" the =
zip with the file or files you send it, without changing or removing the =
other files in the archive. You may still need to extract the files of =
interest from the zip if you don't have them elsewhere, but you don't =
need to explode the whole zip just to change a few files.

Regs,
/t

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