Re: [gentoo-dev] unpacker.eclass

[Mike Frysinger <vapier@gentoo.org>]

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On Wednesday 01 February 2012 18:12:02 Michał Górny wrote:
> On Wed, 1 Feb 2012 15:55:46 -0500 Mike Frysinger wrote:
> > On Wednesday 01 February 2012 15:51:52 Michał Górny wrote:
> > > On Wed, 1 Feb 2012 15:44:14 -0500 Mike Frysinger wrote:
> > > > > > # @USAGE: [archives that we will unpack]
> > > > > > # @RETURN: Dependencies needed to unpack all the archives
> > > > > > # @DESCRIPTION:
> > > > > > # Walk all the specified files (defaults to $SRC_URI) and
> > > > > > figure out the # dependencies that are needed to unpack
> > > > > > things. #
> > > > > > # Note: USE flags are not yet handled.
> > > > > > unpacker_src_uri_depends() {
> > > > > > 
> > > > > > 	local uri deps d
> > > > > > 	
> > > > > > 	[[ $# -eq 0 ]] && set -- ${SRC_URI}
> > > > > > 	
> > > > > > 	for uri in "$@" ; do
> > > > > > 	
> > > > > > 		case ${uri} in
> > > > > > 		*.rar|*.RAR)
> > > > > > 		
> > > > > > 			d="app-arch/unrar" ;;
> > > > > > 		
> > > > > > 		*.7z)
> > > > > > 		
> > > > > > 			d="app-arch/p7zip" ;;
> > > > > 
> > > > > Where are those file formats handled? You don't seem to
> > > > > fallback to 'unpack' anywhere too.
> > > > 
> > > > eh ?  this func doesn't do unpacking, just ${SRC_URI}<->${DEPEND}
> > > > matching.
> > > 
> > > Sooo.. it's intended to generate an useless DEPEND
> > 
> > the ebuild does:
> > 	DEPEND+=" $(unpacker_src_uri_depends)"
> > 	
> > > or you have to reset src_unpack() to default to make the archives
> > > actually extractable.
> > 
> > this func has nothing to do with extraction.  look at the rest of the
> > code to see how the default src_unpack is handled via standard
> > EXPORT_FUNC means.
> 
> Yes, and can that exported default src_unpack() extract either .rar
> or .7z?

there are no plans for that since portage handles it from EAPI=0 onwards.  i 
can have _unpacker() automatically tail off into `unpack` if it finds a file it 
doesn't recognize.
-mike

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