[gentoo-dev] Using some of the emerge features in external programs

[gentoo-dev] Using some of the emerge features in external programs

[Abraham Marin Perez]

Hi everyone,

    Firstly I want to say hello since this is the first e-mail I send to
this mailing list. The second and maybe the most important point is that
I'd like to use one of the features of emerge, and that is a way to know
the version of an application that'd be emerged given the name of the
application or, yet better, the complete name(s) of the file(s) that'd
be downloaded to emerge that application.

    The application I want to do is actually just a script to clean
distfiles directory, but I'd like it to keep files that'd be used if we
install their programs and delete those files that wouldn't be used
anyway.

Abraham.

************************************************************************
Abraham Marin Perez
Studying Computers Science in University of Valencia
E-mail: abraham@alumni.uv.es
Home page: http://mural.uv.es/abraham

Leela: "Bender, maybe you can interface with the Femputer and reprogram
it to let them go." Bender: "Maybe you can interface with my ass... by
biting it."
************************************************************************


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Re: [gentoo-dev] Using some of the emerge features in external programs

[Jon Portnoy]

On Sat, Sep 25, 2004 at 10:32:36PM +0200, Abraham Marin Perez wrote:
> Hi everyone,
> 
>     Firstly I want to say hello since this is the first e-mail I send to
> this mailing list. The second and maybe the most important point is that
> I'd like to use one of the features of emerge, and that is a way to know
> the version of an application that'd be emerged given the name of the
> application or, yet better, the complete name(s) of the file(s) that'd
> be downloaded to emerge that application.

You can access Portage's python library. For example, from the master 
repository distfiles cleaning script (no idea if it's still in use or 
not, I'm not involved with distfiles infrastructure anymore):

URI=`python -c 'import portage; print portage.db["/"]["porttree"].dbapi.aux_get('\"$CATPKG\"',["SRC_URI"])[0]'`

grabbed the Portage-parsed SRC_URI for foo-bar/xyz in $CATPKG.

You can then use basename or whatever your preferred method is for 
parsing out the filenames.

-- 
Jon Portnoy
avenj/irc.freenode.net

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Re: [gentoo-dev] Using some of the emerge features in external programs

[Mike Frysinger]

On Saturday 25 September 2004 04:32 pm, Abraham Marin Perez wrote:
>     The application I want to do is actually just a script to clean
> distfiles directory

search bugzilla, there's already a few out there
-mike

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