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Date: Tue, 31 Oct 2006 07:16:39 -0800 (PST)
From: Matt Benson <gudnabrsam@yahoo.com>
Subject: Re: Accessing the manifest within a jar file
To: Ant Users List <user@ant.apache.org>
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--- "Ivan \"Rambius\" Ivanov"
<rambiusparkisanius@yahoo.com> wrote:

> Hello,
> 
> You can also use Ant 1.7 zipentry resource:
> 
> <zipentry zipfile="my.jar"
>    name="META-INF/MANIFEST.MF"/>


Thanks for the resource plug, Ivan.  :) 
Alternatively, assuming ${jar} points to the relevant
jar file, you could use

<url url="jar:file:///${jar}!/META-INF/MANIFEST.MF" />

or

<javaresource name="META-INF/MANIFEST.MF"
classpath="${jar}" />

;)

Note that the <url>-based solution requires that the
${jar} property be an absolute path (not sure of the
rules regarding file: urls and relative paths). 
Finally, I don't know if it's good or bad that there
are three resource-based ways to access a manifest,
but it's interesting, anyway.

-Matt

> 
> Regards
> Ivan
> 
> --- Antoine Levy-Lambert <antoine@gmx.de> wrote:
> 
> > Hello Michael,
> > 
> > this is an interesting question.
> > 
> > I would write my own custom Ant task . You can use
> > java.util.jar.JarFile
> > and java.util.jar.Manifest to access whathever
> > information you want.
> > 
> > Actually, I am interested by the same sort of
> topic,
> > for instance to
> > collect Vendor/Version/Name information from a set
> > of jar files and
> > generate a report from this.
> > 
> > Regards,
> > 
> > Antoine
> > 
> > Nau, Michael wrote:
> > > Anyone know of an easy way to access the
> manifest
> > file within a jar
> > > file? I realize I can extract the manifest first
> > using the <unjar> task,
> > > but I was hoping for a way to directly access
> the
> > manifest file.
> > >
> > > I need to check for some specific info within
> the
> > manifest of several
> > > jar files from my ant script.
> > >
> > > Thanks,
> > > -Mike
> > >
> > >
> > >
> > >   
> > 
> > 
> >
>
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> 
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