inherit eutils versionator
EXPORT_FUNCTIONS src_unpack src_compile src_install pkg_preinst pkg_postinst

ZEN="zen.eclass"
ARCH_LIST="-alpha -arm -avr32 -blackfin -cris -frv -h8300 -ia64 -m32r -m68k -m68knommu -mips -parisc -powerpc -ppc -s390 -sh -sh64 -sparc -sparc64 -um -v850 x86 -xtensa"

DESCRIPTION="Zen-Sources"
LICENSE="GPL-2"
KEYWORDS="amd64 ~ppc ~sparc x86 ~hppa ~mips ~ppc64 ~alpha ~ia64"
PROVIDE="virtual/linux-sources"
SLOT="0"
IUSE="symlink ${ARCH_LIST}"
RESTRICT="nomirror"
DEPEND=">=dev-util/git-1.5"

ZEN_REV=${PR/r/}
KV=${PV/_rc/-rc}-zen${ZEN_REV}
S=${WORKDIR}/linux-${KV}
EGIT_TAG=v${KV}
EGIT_REPO_URI="git://repo.or.cz/linux-2.6/zen-sources.git"
EGIT_STORE_DIR="${PORTAGE_ACTUAL_DISTDIR-${DISTDIR}}/git-src"
EGIT_FETCH_CMD="git clone --bare"
EGIT_UPDATE_CMD="git fetch -f -u"
EGIT_DIFFSTAT_CMD="git diff --stat"
: ${EGIT_OPTIONS:=}
: ${EGIT_PROJECT:=${PN/-git}}
: ${EGIT_BRANCH:=master}
: ${EGIT_TREE:=${EGIT_BRANCH}}
: ${EGIT_TAG:=}

git_fetch() {
	local EGIT_CLONE_DIR
	[[ -z ${EGIT_REPO_URI} ]] && die "${ZEN}: EGIT_REPO_URI is empty."
	if [[ ! -d ${EGIT_STORE_DIR} ]] ; then
		addwrite /
		mkdir -p "${EGIT_STORE_DIR}" \
			|| die "${ZEN}: can't mkdir ${EGIT_STORE_DIR}."
		chmod -f o+rw "${EGIT_STORE_DIR}" \
			|| die "${ZEN}: can't chmod ${EGIT_STORE_DIR}."
		export SANDBOX_WRITE="${SANDBOX_WRITE%%:/}"
	fi

	cd -P "${EGIT_STORE_DIR}" || die "${ZEN}: can't chdir to ${EGIT_STORE_DIR}"
	EGIT_STORE_DIR=${PWD}

	# every time
	addwrite "${EGIT_STORE_DIR}"

	[[ -z ${EGIT_REPO_URI##*/} ]] && EGIT_REPO_URI="${EGIT_REPO_URI%/}"
	EGIT_CLONE_DIR="${EGIT_PROJECT}"

	export GIT_DIR="${EGIT_CLONE_DIR}"

	if [[ ! -d ${EGIT_CLONE_DIR} ]] ; then
		${EGIT_FETCH_CMD} ${EGIT_OPTIONS} "${EGIT_REPO_URI}" ${EGIT_PROJECT} \
			|| die "${ZEN}: can't fetch from ${EGIT_REPO_URI}."
		git config remote.origin.url "${EGIT_REPO_URI}"
	else
		git config remote.origin.url "${EGIT_REPO_URI}"
		local oldsha1=$(git rev-parse ${EGIT_BRANCH})
		${EGIT_UPDATE_CMD} ${EGIT_OPTIONS} origin ${EGIT_BRANCH}:${EGIT_BRANCH} \
			|| die "${ZEN}: can't update from ${EGIT_REPO_URI}."
		${EGIT_DIFFSTAT_CMD} ${oldsha1}..${EGIT_BRANCH} | cat
	fi

	mkdir -p "${S}"

	if [[ -n ${EGIT_TAG} ]]; then
		git archive --format=tar ${EGIT_TAG} | ( cd "${S}" ; tar xf - )
	else
		git archive --format=tar ${EGIT_TREE} | ( cd "${S}" ; tar xf - )
	fi

	cd ${S}

	local exclude
	exclude=$(echo ${ARCH_LIST} | sed s/-//g | sed s/s390//)

	for arch in ${exclude}; do
		if ! use ${arch}; then
			rm -r arch/${arch}; rm -r include/asm-${arch}
		fi	
	done
}

postinst_sources() {
	if use symlink; then
		eselect kernel set linux-${KV}
	fi
}

zen-sources_src_unpack() {
	git_fetch     || die "${ZEN}: unknown problem in git_fetch()."
}

zen-sources_src_compile() {
        cd "${S}"
}

zen-sources_src_install() {
        dodir /usr/src
        mv ${WORKDIR}/linux* ${D}/usr/src/
}

zen-sources_pkg_postinst() {
        postinst_sources
	einfo
        einfo "Zen-Sources brought to you by:"
	einfo
        einfo "Miguel Boton <mboton@gmail.com>"
        einfo "Ryan Hope <rmh3093@gmail.com>"
}