Added eclass for unpacking debian packages

1 files changed, 81 insertions, 0 deletions

diff --git a/eclass/debian.eclass b/eclass/debian.eclass
new file mode 100644
index 000000000000..197c7e85699f
--- /dev/null
+++ b/eclass/debian.eclass
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+# Copyright 1999-2006 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/eclass/debian.eclass,v 1.1 2006/05/03 07:49:27 stuart Exp $
+
+# Author : Jonathan Scruggs <j.scruggs@gmail.com> (09 April 2006)
+# Based on rpm.eclass by : Alastair Tse <liquidx@gentoo.org> (21 Jun 2003)
+#
+# Convienence class for extracting DEBs
+#
+# Basically, deb_src_unpack does:
+#
+# 1. uses debian_unpack to unpack a deb file using ar from binutils.
+# 2. deletes all the unpacked tarballs and zip files from ${WORKDIR}
+# NOTE: deb2targz requiers perl, and that is not a package installed
+#       by default. ar comes with binutils, so everyone should have
+#       this already, and no need for a dependency of a really large
+#       package like perl. Some users may never need perl.
+#
+# This ebuild now re-defines a utility function called deb_unpack which
+# basically extracts the files out of the deb. It does not gzip the
+# output tar again but directly extracts to ${WORKDIR}
+#
+# I don't know if this will handle RPMs in the list, but it will with
+# other regular files that the unpack command can handle. :)
+
+
+# extracts the contents of the DEP in ${WORKDIR}
+debian_unpack() {
+	local debfile targzfile return_value
+	debfile=$1
+
+	if [ -z "${debfile}" ]; then
+		return_value=1
+	else
+		ar x ${debfile}
+		# remove unneeded files.
+		rm -f control.tar.gz debian-binary
+
+		# Make this multi-file friendly.
+		# Rename this for nice output during emerge, so
+		# Users know what file is being extracted, rahter
+		# than seeing data.tar.gz all the time.
+		targzfile=${debfile##*\/}
+		targzfile=${targzfile//.deb/.tar.gz}
+		mv data.tar.gz ${targzfile}
+
+		return_value=0
+	fi
+
+	return ${return_value}
+}
+
+debian_src_unpack() {
+	local x targzfile ext myfail OLD_DISTDIR
+
+	for x in ${A}; do
+		myfail="failure unpacking ${x}"
+		ext=${x##*.}
+		case "$ext" in
+		deb)
+			echo ">>> Unpacking ${x}"
+			cd ${WORKDIR}
+			debian_unpack ${DISTDIR}/${x} || die "${myfail}"
+
+			# Needed to unpack data.tar.gz
+			OLD_DISTDIR=${DISTDIR}
+			DISTDIR=${WORKDIR}
+			targzfile=${x##*\/}
+			targzfile=${targzfile//.deb/.tar.gz}
+			unpack ${targzfile}
+			rm -f ${targzfile}
+			DISTDIR=${OLD_DISTDIR}
+			;;
+		*)
+			unpack ${x}
+			;;
+		esac
+	done
+}
+
+EXPORT_FUNCTIONS src_unpack