# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

# @ECLASS: games-bin.eclass
# @MAINTAINER:
# Julian Ospald <hasufell@gentoo.org>
# games herd <games@gentoo.org>
# @BLURB: games eclass for binary games such as humble bundle sales
# @DESCRIPTION:
# RESTRICT, GAMES_DIR, QA_PREBUILT and S are preset, but can be overridden
# as usual when set after the inherit line (see "ECLASS DEFAULTS").
# E.g. GAMES_DIR var is preset to ${GAMES_PREFIX_OPT}/${PN} and can be used
# in src_install.
#
# remove_bundled_libs is executed automatically in games-bin_src_prepare
# if IUSE="bundled-libs" is present and if the user has disabled it.
# Use GAMES_PRESERVE_BUNDLED_LIBS array to always preserve particular
# libraries, e.g. when they are not in the tree.

inherit unpacker games

EXPORT_FUNCTIONS pkg_nofetch src_unpack src_prepare

# ECLASS DEFAULTS
RESTRICT="bindist fetch"
GAMES_DIR="${GAMES_PREFIX_OPT}/${PN}"
QA_PREBUILT="${GAMES_DIR#/}/*}"
S=${WORKDIR}

# @ECLASS-VARIABLE: GAMES_DIR
# @DESCRIPTION:
# Install dir to be used with insinto/doins,
# default is: ${GAMES_PREFIX_OPT}/${PN}.

# @ECLASS-VARIABLE: GAMES_PRESERVE_BUNDLED_LIBS
# @DESCRIPTION:
# Preserve list for bundled libraries, must be a bash ARRAY!
# Supports wildcard (libGLEW.so*), but only filenames, not paths.
# Supports _$ARCH suffix for the var (GAMES_PRESERVE_BUNDLED_LIBS_amd64).

# @FUNCTION: remove_bundled_libs
# @USAGE: [<searchdir>]
# @DESCRIPTION:
# Looks recursively for libraries and symlinks matching
# lib*.so* in <searchdir> (default is ${S}) and removes them.
remove_bundled_libs() {
	local p i x
	local dir=${1:-${S}}
	# default search pattern for "find"
	local search_pattern=(-name "lib*.so*")

	einfo "Removing bundled libraries"

	for p in GAMES_PRESERVE_BUNDLED_LIBS{,_${ARCH}} ; do
		if [[ "$(declare -p ${p} 2>/dev/null 2>&1)" == "declare -a"* ]]; then
			x=${p}[@] # preserve the array
			for i in "${!x}" ; do
				# no paths, use ${1} instead for micro-management
				[[ ${i} == */* ]] && die "GAMES_PRESERVE_BUNDLED_LIBS must not contain paths"
				# add exclusions to the search pattern
				search_pattern+=( -a \! -name "${i}")
			done
		fi
	done

	find "${dir}" \( -type f -o -type l \) \( "${search_pattern[@]}" \) -print -delete || die
}

games-bin_pkg_nofetch() {
	einfo
	einfo "Please buy & download ${SRC_URI} from:"
	einfo "  ${HOMEPAGE}"
	einfo "and move it to ${DISTDIR}"
	einfo
}

games-bin_src_unpack() {
	unpacker_src_unpack
}

games-bin_src_prepare() {
	if has bundled-libs ${IUSE} ; then
		use bundled-libs || remove_bundled_libs
	fi
}