# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

inherit eutils flag-o-matic versionator games

MY_PV=$(get_version_component_range 3)
DESCRIPTION="A game similar to Settlers 2"
HOMEPAGE="http://www.widelands.org/"

# Build 13 breaks previous naming conventions
# (used to be ${PN}-build-${PV}-source.tar.bz2)
SRC_URI="mirror://sourceforge/${PN}/Widelands-Build${MY_PV}-src.tar.bz2"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~ppc ~x86"
IUSE="nls shrink"

RDEPEND="media-libs/libsdl
	media-libs/sdl-image
	>=media-libs/sdl-mixer-1.2.6
	media-libs/sdl-net
	>=media-libs/sdl-ttf-2.0
	media-libs/sdl-gfx
	media-libs/libpng
	>=dev-libs/boost-1.33
	nls? ( virtual/libintl )"
DEPEND="${RDEPEND}
	nls? ( sys-devel/gettext )
	shrink? (
		media-gfx/optipng
		media-gfx/pngrewrite
	)
	>=dev-util/scons-1.0"

S=${WORKDIR}/${PN}-b13

src_unpack() {

	if use shrink; then
		ewarn "You have activated png shrinking. This is usually only"
		ewarn "done upstream. Expect it to last many hours."
	fi

	unpack ${A}

	# build 13 breaks standard unpacking: creates widelands-b13
	# per discussions in IRC, S variable updated instead of a mv
	# mv "${WORKDIR}/widelands-b13" "${S}"

	cd "${S}"

	# TODO: Gentooify locale abbreviations and let user select languages
	#strip-linguas -u po

	# per comment 3 in bug #249396 scons works without patching
	# makefile is unsupported, perhaps even broken
	# rm -f $(find . -name SConscript)

	# when build=release, scons strips the binary, we'll do that ourselves
	# per discussion in IRC. Using sed inside the ebuild instead of external
	# patch.
	sed -i "s:\(env.strip=\)1:\10:g" build/scons-tools/scons_configure.py \
		|| die "sed no-strip failed"

	sed -i "s:__ppc__:__PPC__:" src/s2map.cc \
		|| die "sed s2map.cc failed"
	sed -i "s:/usr/share/games:${GAMES_DATADIR}:" src/wlapplication.cc \
		|| die "sed wlapplication.cc failed"
	sed -i "s:/l/WiLa/Setup:${GAMES_DATADIR}/${PN}:" src/config.h.default \
		|| die "sed config.h.default failed"

	# make nls use flag dependant
	sed -i "s:opts.AddOptions(:&\n\
		BoolOption('gentoo_use_nls', '', False),:g;\
		s:env\['build'\]=='release':env\['gentoo_use_nls'\]==True:g" \
		SConstruct \
		|| die "sed SConstruct:nls failed"

	# we will install doc manually (hard to configure with scons)
	sed -i "s:instadd(env, '.*', 'doc'):#&:g" SConstruct \
		|| die "sed SConstruct:doc failed"

	# TODO: This is really ugly and redundant. Find a better solution.
	# TODO: Make a patch?
	if has ccache $FEATURES; then
		sed -i "s:env.Help(opts.GenerateHelpText(env)):&\n\
		\renv.Append(CCACHE_DIR = os.environ['CCACHE_DIR'])\n\
		\renv['CXX']='CCACHE_DIR=\"$CCACHE_DIR\" ccache g++':g"\
		SConstruct \
		|| die "sed-inserting ccache configuration in SConstruct failed"
	fi

	# Upstream says that omit-frame-pointer breaks exceptions. Don't use it.
	filter-flags -fomit-frame-pointer

	# Upstream's optimization CXXFLAGS are inconsistent, use Gentoo's flags
	# instead. Do not use scons extra_compile_flags="${CXXFLAGS}" as most
	# of it will be overridden by the default flags
	cd build/scons-tools
	mv scons_configure.py scons_configure.py_orig

	local awk_cxxflags
	awk_cxxflags=$(
		for i in -fno-omit-frame-pointer ${CXXFLAGS}; do
			echo "print \"\t\tconf.CheckCompilerFlag('${i}', env)\""
		done
	)

	awk '/if env.optimize:$/ {
		a = 1
	}
	/conf.CheckCompilerFlag/ {
		if (a == 1)
			sub(".*","#&")
	}
	/else:/ {
		if (a == 1) {
			a = 0
			'"$awk_cxxflags"'
			print "\t\tpass"
		}
	}
	// {
		print
	}' \
	scons_configure.py_orig > scons_configure.py \
	|| die "awk failed"

	cd ../..
}

src_compile() {

	local gentoo_use_nls="no"
	use nls && gentoo_use_nls="yes"

	local regexp='([ \t]--jobs([=][0]*[1-9][0-9]*'
	regexp="${regexp}"'|[ \t]+[0]*[1-9][0-9]*))'
	regexp="${regexp}"'|([ \t]-j[ \t]*[0]*[1-9][0-9]*)'

	local parallel_switch=$(
		echo " ${MAKEOPTS}" | grep -oP "${regexp}" | tail -n 1 \
			| sed "s:--jobs[^=][ \t]*:--jobs=:g; s:[ \t]*::g"
	)

	[ "-j" = "${parallel_switch}" ] && parallel_switch="-j256"
	[ "--jobs" = "${parallel_switch}" ] && parallel_switch="-j256"
	[ "" = "${parallel_switch}" ] && parallel_switch="-j1"

	einfo "running scons with ${parallel_switch}"

	if use shrink; then
		scons ${parallel_switch} shrink \
		|| die "scons shrink failed"
	fi

	scons ${parallel_switch} \
		build="release" \
		build_id="${PVR}" \
		install_prefix="${D}/usr" \
		bindir="${D}${GAMES_BINDIR}" \
		datadir="${D}${GAMES_DATADIR}/widelands" \
		localedir="/usr/share/locale" \
		gentoo_use_nls=${gentoo_use_nls} \
		|| die "scons build failed"
}

src_install() {
	# workaround for strange directory configuration
	scons localedir="${D}/usr/share/locale" install \
		|| die "scons install failed"

	newicon pics/wl-ico-48.png ${PN}.png
	make_desktop_entry ${PN} Widelands

	dodoc ChangeLog CREDITS
	prepgamesdirs
}