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From: =?iso-8859-1?Q?Lennart_Hellstr=F6m_=28HF/EBC=29?=
	 <lennart.hellstrom@ericsson.com>
To: "'Ant Users List'" <user@ant.apache.org>
Subject: RE: Reading file attributes
Date: Wed, 29 Sep 2004 14:08:09 +0200
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Oh, never mind, I solved my error by using the tags
<selector...>
	<custom .../>
</selector...>

BUT, I'm still having problems creating the logic that I want, so =
please help me anywone!
What I want to do is to copy the file x.txt and y.txt to xprev.txt and =
yprev.txt ONLY if xprev.txt and yprev.txt are write enabled.=20
How can I do that?

Regards
/ Lelle

>=20
> =20
> > On Sep 28, 2004, at 5:04 AM, Lennart Hellstr=F6m (HF/EBC) wrote:
> > > I want to copy a file to a destination file only if the=20
> destination=20
> > > file is not readonly (it might be checked in on the=20
> version control
> > > system)
> > >
> > > I tried using <copy> with failOnError=3D"false" but strangely
> > the build
> > > fails anyway when the destination file is readonly.
> > >
> > > Is there some way to look at the file's attributes before
> > deciding to
> > > copy or not?
> > > <Attrib> seems to only change the file attributes, and
> > that's not what
> > > I want.
> >=20
> > There may be other ways to do this, but as an example of writing a
> > custom selector I do this:
> >=20
> >    <typedef name=3D"readonly"
> >             classname=3D"ReadOnlySelector"
> >             classpath=3D"build/classes"
> >    />
> >=20
> >    <copy todir=3D"build/copy">
> >      <fileset dir=3D"src">
> >        <readonly/>
> >      </fileset>
> >    </copy>
> >=20
> > Where ReadOnlySelector is this:
> >=20
> > import org.apache.tools.ant.types.selectors.FileSelector;
> > import org.apache.tools.ant.BuildException;
> >=20
> > import java.io.File;
> >=20
> > public class ReadOnlySelector implements FileSelector {
> >    public boolean isSelected(File basedir,
> >                              String filename,
> >                              File file) throws BuildException {
> >      return !file.canWrite() && file.canRead();
> >    }
> > }
> >=20
>=20
> Fine, thanks!
> With that implemented I now get the following error in my ant=20
> script: "The <fileset> data type doesn't support the nested=20
> "readonly" element. at line 296"
>=20
> Is there something else I need to do to make ant accept my=20
> custom selection?
>=20
> / Lelle
>=20
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>=20

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