# Copyright 2011-2014 Andrey Ovcharov <sudormrfhalt@gmail.com>
# Distributed under the terms of the GNU General Public License v3
# $Header: $

# @ECLASS: exfat.eclass
# This file is part of sys-kernel/geek-sources project.
# @MAINTAINER:
# Andrey Ovcharov <sudormrfhalt@gmail.com>
# @AUTHOR:
# Original author: Andrey Ovcharov <sudormrfhalt@gmail.com> (20 Sep 2013)
# @LICENSE: http://www.gnu.org/licenses/gpl-3.0.html GNU GPL v3
# @BLURB: Eclass for building kernel with exfat patchset.
# @DESCRIPTION:
# This eclass provides functionality and default ebuild variables for building
# kernel with exfat patches easily.

# The latest version of this software can be obtained here:
# https://github.com/init6/init_6/blob/master/eclass/exfat.eclass
# Bugs: https://github.com/init6/init_6/issues
# Wiki: https://github.com/init6/init_6/wiki/geek-sources

case ${EAPI} in
	5)	: ;;
	*)	die "exfat.eclass: unsupported EAPI=${EAPI:-0}" ;;
esac

if [[ ${___ECLASS_ONCE_EXFAT} != "recur -_+^+_- spank" ]]; then
___ECLASS_ONCE_EXFAT="recur -_+^+_- spank"

inherit patch utils vars

EXPORT_FUNCTIONS src_unpack src_prepare pkg_postinst

# @FUNCTION: init_variables
# @INTERNAL
# @DESCRIPTION:
# Internal function initializing all variables.
# We define it in function scope so user can define
# all the variables before and after inherit.
exfat_init_variables() {
	debug-print-function ${FUNCNAME} "$@"

	: ${EXFAT_VER:=${EXFAT_VER:-"${KMV}"}} # Patchset version
	: ${EXFAT_SRC:=${EXFAT_SRC:-"https://github.com/zen-kernel/zen-kernel/compare/torvalds:v${EXFAT_VER/KMV/$KMV}...${EXFAT_VER/KMV/$KMV}/exfat.diff"}} # Patchset sources url
	: ${EXFAT_URL:=${EXFAT_URL:-"http://opensource.samsung.com/reception/receptionSub.do?method=search&searchValue=exfat"}} # Patchset url
	: ${EXFAT_INF:=${EXFAT_INF:-"${YELLOW}Samsung’s exFAT fs Linux driver version ${GREEN}${EXFAT_VER}${YELLOW} from ${GREEN}${EXFAT_URL}${NORMAL}"}}

	debug-print "${FUNCNAME}: EXFAT_VER=${EXFAT_VER}"
	debug-print "${FUNCNAME}: EXFAT_SRC=${EXFAT_SRC}"
	debug-print "${FUNCNAME}: EXFAT_URL=${EXFAT_URL}"
	debug-print "${FUNCNAME}: EXFAT_INF=${EXFAT_INF}"
}

exfat_init_variables

HOMEPAGE="${HOMEPAGE} ${EXFAT_URL}"

# @FUNCTION: src_unpack
# @USAGE:
# @DESCRIPTION: Extract source packages and do any necessary patching or fixes.
exfat_src_unpack() {
	debug-print-function ${FUNCNAME} "$@"

	local CSD="${GEEK_STORE_DIR}/exfat"
	local CWD="${T}/exfat"
	local CTD="${T}/exfat"$$
	shift
	test -d "${CWD}" >/dev/null 2>&1 && cd "${CWD}" || mkdir -p "${CWD}"; cd "${CWD}"
	dest="${CWD}"/exfat-"${PV}"-`date +"%Y%m%d"`.patch
	wget "${EXFAT_SRC}" -O "${dest}" > /dev/null 2>&1
	cd "${CWD}" || die "${RED}cd ${CWD} failed${NORMAL}"
	ls -1 "${CWD}" | grep ".patch" > "${CWD}"/patch_list
}

# @FUNCTION: src_prepare
# @USAGE:
# @DESCRIPTION: Prepare source packages and do any necessary patching or fixes.
exfat_src_prepare() {
	debug-print-function ${FUNCNAME} "$@"

	ApplyPatch "${T}/exfat/patch_list" "${EXFAT_INF}"
	move "${T}/exfat" "${WORKDIR}/linux-${KV_FULL}-patches/exfat"

	ApplyUserPatch "exfat"
}

# @FUNCTION: pkg_postinst
# @USAGE:
# @DESCRIPTION: Called after image is installed to ${ROOT}
exfat_pkg_postinst() {
	debug-print-function ${FUNCNAME} "$@"

	einfo "${EXFAT_INF}"
}

fi