#!/bin/bash
# Kanotix Build System by acritox
ABS_VER="2010-03-01d"

[ -z "$build_addons_mirror" ] && export build_addons_mirror="http://acritox.de/kanotix/build/"
if [ ! -e "addons" ]; then
	echo "You have to run the build system from the root-directory of the build!" >&2
	echo "(this is the directory containing your buildscript, addons, config, ...)" >&2
	exit 1
fi

add_packages()
{
	lh_config --packages "$( ( cat config/chroot; echo "echo $@; echo \$LH_PACKAGES"; ) | sh | tr ' ' '\n' | sort -u | tr '\n' ' ')"
}

include_build_addons()
{
	for addon in $@
	do
		echo "including addon $addon ..."
		if [ $(expr index "$addon" "://") -eq 0 ]; then wget -Ncq -P addons/ "$build_addons_mirror/$addon"; else
			wget -Ncq -P addons/ "$addon"; addon="$(basename "$addon")"
		fi
		if [ ! -e "addons/$addon" ]; then echo "failed to fetch $addon!" >&2; return 1; fi
		case "${addon##*.}" in
		patch)
			patch --dry-run -Nsp0 -d config/ < "addons/$addon" && patch -p0 -d config/ < "addons/$addon"
			;;
		append)
			read p file < "addons/$addon"
			[ "$p" = "#APPEND_TO#" ] && tail -n+2 "addons/$addon" >> "config/$file"
			;;
		conf)
			read p file < "addons/$addon"
			[ "$p" = "#WRITE_TO#" ] && tail -n+2 "addons/$addon" > "config/$file"
			;;
		sh)
			. "addons/$addon"
			;;
		src)
			srcfile="$(basename "$addon" .src)"
			read p keyfile < "addons/$addon"
			if [ "$p" = "key" ]; then
				tail -n+2 "addons/$addon" | \
				tee "config/chroot_sources/$srcfile.binary" > "config/chroot_sources/$srcfile.chroot"
				wget -qO- "$keyfile" | \
				tee "config/chroot_sources/$srcfile.binary.gpg" > "config/chroot_sources/$srcfile.chroot.gpg"
			elif [ "$p" = "gpgkey" ]; then
				tail -n+2 "addons/$addon" | \
				tee "config/chroot_sources/$srcfile.binary" > "config/chroot_sources/$srcfile.chroot"
				gpg --keyserver wwwkeys.de.pgp.net --recv-keys $keyfile
				gpg --armor --export $keyfile | \
				tee "config/chroot_sources/$srcfile.binary.gpg" > "config/chroot_sources/$srcfile.chroot.gpg"
			else
				cat "addons/$addon" | \
				tee "config/chroot_sources/$srcfile.binary" > "config/chroot_sources/$srcfile.chroot"
			fi
			;;
		packages)
			packages="$( ( cat config/chroot; echo "echo \$LH_PACKAGES" ) | sh | tr ' ' '\n')"
			for package in $(grep ^- "addons/$addon"|sed 's/^-//')
			do
				packages="$(echo "$packages" | grep -ve "^$package$")"
			done
			for package in $(grep ^+ "addons/$addon"|sed 's/^+//')
			do
				packages="$(echo "$packages"; eval "echo \"$package\"")"
			done
			lh_config --packages "$(echo "$packages" | sort -u | tr '\n' ' ')"
			;;
		*) tar -xvzC config/ < "addons/$addon" ;;
		esac
	done
}

case "$1" in
version|--version)
	echo "Acritox Build System - Version $ABS_VER"
	exit 0;;
update|--update)
	echo "Updating Acritox Build System..."
	rm -f addons/acritox_build_system
	wget -Ncq -P addons/ "$build_addons_mirror/acritox_build_system"
	echo "Old Version: $ABS_VER - updated to:"
	"$0" version
	exit 0;;
clean|--clean)
	echo "Cleaning addons..."
	find addons/ -type f ! -name acritox_build_system -exec rm '{}' \;
	exit 0;;
help|--help)
cat <<EOF
ACRITOX BUILD SYSTEM		written by Andreas Loibl <andreas@andreas-loibl.de>

  --version	Show version
  --update	Update Acritox Build System
		fetches latest version of addons/acritox_build_system from build-system mirror
  --clean	Clean "addons/"
		removes all files (exept the build system) from the addons-directory

EOF
exit 0;;
esac