lib/mage/smage2.functions.sh

#!/bin/bash
# smage2 releated functions
# $Id$

# sources the smage file and uses state from distribution file if exist
# may helpful for repository support later on
smagesource()
{
	local file="$1"
	local mystate
	local mycodename

	source ${file}

	# if PCAT was not set and PCATEGORIE was found
	# inform the user and use PCATEGORIE as PCAT
	if [[ -z ${PCAT} ]]
	then
		if [[ -n ${PCATEGORIE} ]]
		then
			PCAT="${PCATEGORIE}"
			# print a warning
			echo -e "${COLYELLOW}Warning: 'PCATEGORIE' is deprecated and gets removed in the future.${COLDEFAULT}"
			echo -e "${COLYELLOW}         Please modify this smage2 script to use the 'PCAT' variable.${COLDEFAULT}"
			echo
		else
			die "Neither PCAT nor PCATEGORIE are defined!"
		fi
	fi

	[[ -n ${STATE} ]] && mystate="${STATE}"

	# do not overide if local state was broken or disabled!
	case ${STATE} in
		broken) return ;;
		disabled) return ;;
	esac

	if [ -f ${SMAGESCRIPTSDIR}/distribution ]
	then
		source ${SMAGESCRIPTSDIR}/distribution
		[[ -n ${STATE} ]] && mystate="${STATE}"
	fi
	# now switch state and export it
	STATE="${mystate}"
}

showversion()
{
	echo -en "Magellan Source Install v${SMAGEVERSION} "
	echo -e  "-- Niels Rogalla (niro@magellan-linux.de)"
}

die()
{
	xtitleclean
	echo -e ${COLRED}"Exited ${BASH_SOURCE} at line no ${BASH_LINENO}."${COLDEFAULT}
	echo "SMAGE failed: $@"
	exit 1
}

die_pipestatus()
{
	# the status change if we do any parameter declarations!!
	# dont do this anymore, keep this in mind!
	#
	# local pos="$1"
	# local comment="$2"
	#
	# [ ${PIPESTATUS[${pos}]} -ne 0 ] && die "${comment}"
	#
	[ ${PIPESTATUS[$1]} -ne 0 ] && die "$2"
}

xtitle()
{
	if [[ ${TERM} = xterm ]]
	then
		echo -ne "\033]0;[sMage: $@]\007"
	fi
	return 0
}

xtitleclean()
{
	if [[ ${TERM} = xterm ]]
	then
		echo -ne "\033]0;\007"
	fi
	return 0
}

syncsmage2()
{
	xtitle "Updating smage2-script tree ..."
	local i
	for i in ${SMAGE2RSYNC}
	do
		rsync ${RSYNC_FETCH_OPTIONS} ${i} ${SMAGESCRIPTSDIR}
		if [[ $? = 0 ]]
		then
			break
		else
			continue
		fi
	done

	# clean up backup files (foo~)
	find ${SMAGESCRIPTSDIR} -name *~ -exec rm '{}' ';'

	xtitleclean
}

# $1 filename
get_db_md5_sum()
{
	local DB_FILE
	local MD5_FILE
	local i

	DB_ENTRY="$(basename $1)"
	MD5_FILE="${MD5DIR}/$(basename ${SMAGENAME} ${SMAGESUFFIX})"

	i="$(cat ${MD5_FILE}| grep ${DB_ENTRY} | cut -d' ' -f1)"
	
	echo "${i}"
}

download_sources()
{
	[ -z "${SRC_URI}" ] && echo -e "\nNothing declared to download.\n" && return 0

	local count=${#SRC_URI[*]}
	local uri
	local subdir
	local outputdir
	local db_md5_file="${MD5DIR}/$(basename ${SMAGENAME} .${SMAGESUFFIX}).md5"
	local fetching
	local i

	# check if FETCHING is needed
	if mchecksum --rundir "${SOURCEDIR}/${PNAME}" --file "${db_md5_file}" --method md5
	then
		# md5's ok, no fetching needed
		fetching=false
	else
		fetching=true
	fi

	if [[ ${fetching} = true ]]
	then
		for ((i=0; i < count; i++))
		do
			# url to file
			uri="${SRC_URI[${i}]%%' '*}"

			# subdir in sources dir; the my_SRCI_URI file goes to there
			subdir="${SRC_URI[${i}]##*' '}"

			# if $subdir is not equal with $uri then an other dir is used
			if [[ ${uri} != ${subdir} ]]
			then
				outputdir="${SOURCEDIR}/${PNAME}/${subdir}"
			else
				outputdir="${SOURCEDIR}/${PNAME}"
			fi

			echo -e "${COLBLUE}==>${COLGREEN} fetching ${uri}${COLDEFAULT}"
			# always use verbose mode for source downloads
			FVERBOSE=off msetfeature "verbose"
			# do not die here, mchecksum catches download errors
			mdownload --uri "${uri}" --dir "${outputdir}"

			# unset them to be sure
			unset uri
			unset subdir
			unset outputdir
		done

		# recheck md5 sums after download
		echo
		echo -e "${COLBLUE}===${COLGREEN} Checking MD5 sums:${COLDEFAULT}"
		mchecksum --rundir "${SOURCEDIR}/${PNAME}" --file "${db_md5_file}" --method md5 || die "md5 failed"
		echo
	else
		echo -e "${COLBLUE}===${COLGREEN} All sources already fetched, nothing to do${COLDEFAULT}"
	fi

	# not needed anymore
	unset SRC_URI
}

# dummy function, used if that does not exist in smage file
src_prepare()
{
	echo "no src_prepare defined; doing nothing ..."
	return 0
}

# dummy function, used if that does not exist in smage file
src_compile()
{
	echo "no src_compile defined; doing nothing ..."
	return 0
}

# dummy function, used if that does not exist in smage file
src_check()
{
	echo "no src_check defined; doing nothing ..."
	return 0
}

# dummy function, used if that does not exist in smage file
src_install()
{
	echo "no src_install defined; doing nothing ..."
	return 0
}

mlibdir()
{
	local libdir=lib
	[[ ${ARCH} = x86_64 ]] && libdir=lib64

	echo "${libdir}"
}

mconfigure()
{
	local myopts
	if [[ ! -z ${CTARGET} ]]
	then
		myopts+=" --target=${CTARGET}"
	fi

	if [ -x ./configure ]
	then
		# if requested disable-static
		if [[ ! -z $(./configure --help | grep -- '--.*able-static') ]]
		then
			if mqueryfeature '!static'
			then
				myopts+=" --disable-static"
			else
				myopts+=" --enable-static"
			fi
		fi

		# always enable shared by default
		if [[ ! -z $(./configure --help | grep -- '--.*able-shared') ]]
		then
			myopts+=" --enable-shared"
		fi

		./configure \
			--prefix=/usr \
			--host=${CHOST} \
			--build=${CHOST} \
			--mandir=/usr/share/man \
			--infodir=/usr/share/info \
			--datadir=/usr/share \
			--sysconfdir=/etc \
			--localstatedir=/var/lib \
			--libdir=/usr/$(mlibdir) \
			${myopts} \
			"$@" || die "mconfigure failed"
	else
		echo "configure is not an executable ..."
		exit 1
	fi
}

minstall()
{
	if [ -f ./[mM]akefile -o -f ./GNUmakefile ]
	then
		make prefix=${BINDIR}/usr \
			datadir=${BINDIR}/usr/share \
			infodir=${BINDIR}/usr/share/info \
			localstatedir=${BINDIR}/var/lib \
			mandir=${BINDIR}/usr/share/man \
			sysconfdir=${BINDIR}/etc \
			libdir=${BINDIR}/usr/$(mlibdir) \
			"$@" install || die "minstall failed"
        else
                die "no Makefile found"
        fi
}

mmake()
{
	make ${MAKEOPTS} ${EXTRA_EMAKE} "$@"
}

munpack()
{
	local SRCFILE
	local IFTAR
	local DEST

	SRCFILE=$1

	if [[ -z $2 ]]
	then
		DEST=${BUILDDIR}
	else
		DEST=$2
	fi

	[[ ! -d ${DEST} ]] && install -d ${DEST}

	case "${SRCFILE##*.}" in
		bz2)
			IFTAR="$(basename $SRCFILE .bz2)"
			IFTAR="${IFTAR##*.}"
			if [[ ${IFTAR} = tar ]]
			then
				tar --no-same-owner -xvjf ${SOURCEDIR}/${PNAME}/${SRCFILE} -C ${DEST} || die ".tar.bz2 unpack failed."
			else
				pushd ${DEST} > /dev/null
				bzcat ${SOURCEDIR}/${PNAME}/${SRCFILE} > ${DEST}/$(basename ${SRCFILE} .bz2) || die ".bz2 unpack failed."
				popd > /dev/null
			fi
			;;
		gz)
			IFTAR="$(basename $SRCFILE .gz)"
			IFTAR="${IFTAR##*.}"
			if [[ ${IFTAR} = tar ]]
			then
				tar --no-same-owner -xvzf ${SOURCEDIR}/${PNAME}/${SRCFILE} -C ${DEST} || die ".tar.gz unpack failed."
			else
				pushd ${DEST} > /dev/null
				zcat ${SOURCEDIR}/${PNAME}/${SRCFILE} > ${DEST}/$(basename ${SRCFILE} .gz) || die ".gz unpack failed."
				popd > /dev/null
			fi
			;;
		xz)
			IFTAR="$(basename $SRCFILE .xz)"
			IFTAR="${IFTAR##*.}"
			if [[ ${IFTAR} = tar ]]
			then
				tar --no-same-owner -xvJf ${SOURCEDIR}/${PNAME}/${SRCFILE} -C ${DEST} || die ".tar.xz unpack failed."
			else
				pushd ${DEST} > /dev/null
				xzcat ${SOURCEDIR}/${PNAME}/${SRCFILE} > ${DEST}/$(basename ${SRCFILE} .xz) || die ".xz unpack failed."
				popd > /dev/null
			fi
			;;
		tbz2|mpks|mpk)
			tar --no-same-owner -xvjf ${SOURCEDIR}/${PNAME}/${SRCFILE} -C ${DEST} || die ".tbz2 unpack failed."
			;;
		tgz)
			tar --no-same-owner -xvzf ${SOURCEDIR}/${PNAME}/${SRCFILE} -C ${DEST} || die ".tgz unpack failed."
			;;
		txz|mpkzs|mpkz)
			tar --no-same-owner -xvJf ${SOURCEDIR}/${PNAME}/${SRCFILE} -C ${DEST} || die ".txz unpack failed."
			;;
		rar)
			unrar x ${SOURCEDIR}/${PNAME}/${SRCFILE} ${DEST}  || die ".rar unpack failed."
			;;
		zip|xpi|jar)
			unzip ${SOURCEDIR}/${PNAME}/${SRCFILE} -d ${DEST} || die ".zip unpack failed."
			;;
		rpm)
			pushd ${DEST} > /dev/null
			rpm2targz ${SOURCEDIR}/${PNAME}/${SRCFILE} || die "rpm2targz: .rpm unpack failed."
			tar --no-same-owner -xvzf ${SRCFILE/.rpm/.tar.gz} || die "tar: .rpm unpack failed."
			if [[ -f ${DEST}/${SRCFILE/.rpm/.tar.gz} ]]
			then
				rm ${DEST}/${SRCFILE/.rpm/.tar.gz}
			fi
			;;
		*)
			die "munpack failed"
			;;
	esac
}

mpatch()
{
	local PATCHOPTS
	local PATCHFILE
	local i

	PATCHOPTS=$1
	PATCHFILE=$2

	if [[ -z $2 ]]
	then
		PATCHFILE=$1

		## patch level auto-detection, get patch level
		for ((i=0; i < 10; i++))
		do
			patch --dry-run -Np${i} -i ${SOURCEDIR}/${PNAME}/${PATCHFILE} > /dev/null
			if [[ $? = 0 ]]
			then
				PATCHOPTS="-Np${i}"
				break
			fi
		done
	fi

	echo -e "${COLBLUE}*** ${COLGREEN}Applying patch '${PATCHFILE}'${COLDEFAULT}"
	patch "${PATCHOPTS}" -i ${SOURCEDIR}/${PNAME}/${PATCHFILE}
}

mlibtoolize()
{
	local opts="$@"
	[[ -z ${opts} ]] && opts="--verbose --install --force"

	libtoolize ${opts} || die "running: mlibtoolize ${opts}"
}

mautoreconf()
{
	local opts="$@"
	[[ -z ${opts} ]] && opts="--verbose --install --force"

	autoreconf ${opts} || die "running: mautoreconf ${opts}"
}

minstalldocs()
{
	local docfiles
	local doc
	docfiles="$@"

	if [ ! -d ${BINDIR}/usr/share/doc/${PNAME}-${PVER} ]
	then
		install -d ${BINDIR}/usr/share/doc/${PNAME}-${PVER} || die "creating doc dirs."
	fi

	for doc in ${docfiles}
	do
		if [ -f ${doc} ]
		then
			if mqueryfeature "compressdoc"
			then
				cat ${doc} | gzip -9c > ${BINDIR}/usr/share/doc/${PNAME}-${PVER}/$(basename ${doc}).gz || die "gzipping +installing ${doc}."
				chmod 0644 ${BINDIR}/usr/share/doc/${PNAME}-${PVER}/$(basename ${doc}).gz || die "fixing permissions of ${doc}."
			else
				install -m 0644 ${doc} ${BINDIR}/usr/share/doc/${PNAME}-${PVER} || die "installing ${doc}."
			fi
		fi
	done
}

mstriplibs()
{
	local stripdir="$@"

	[[ -z ${stripdir} ]] && stripdir="${BINDIR}"
	[[ -z ${STRIP_DYN_LIB} ]] && STRIP_DYN_LIB="--strip-debug"
	find ${stripdir} ! -type d | xargs --no-run-if-empty file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs --no-run-if-empty strip ${STRIP_DYN_LIB} 2> /dev/null
}

mstripbins()
{
	local stripdir="$@"

	[[ -z ${stripdir} ]] && stripdir="${BINDIR}"
	[[ -z ${STRIP_DYN_BIN} ]] && STRIP_DYN_BIN="--strip-debug"
	find ${stripdir} ! -type d | xargs --no-run-if-empty file | grep "executable" | grep ELF | cut -f 1 -d : | xargs --no-run-if-empty strip ${STRIP_DYN_BIN} 2> /dev/null
}

mstripstatic()
{
	local stripdir="$@"

	[[ -z ${stripdir} ]] && stripdir="${BINDIR}"
	[[ -z ${STRIP_STATIC_LIB} ]] && STRIP_STATIC_LIB="--strip-debug"
	find ${stripdir} ! -type d | xargs --no-run-if-empty file | grep "ar archive" | cut -f 1 -d : | xargs --no-run-if-empty strip ${STRIP_STATIC_LIB} 2> /dev/null
}

mstriplibtoolarchive()
{
	local stripdir="$@"

	[[ -z ${stripdir} ]] && stripdir="${BINDIR}"
	find ${stripdir} ! -type d -name \*.la | xargs --no-run-if-empty file | grep "libtool library" | cut -f 1 -d : | xargs --no-run-if-empty rm -f -- 2> /dev/null
}

mpurgetargets()
{
	local stripdir="$@"
	local target

	[[ -z ${stripdir} ]] && stripdir=${BINDIR}
	# nothing to do in this case
	[[ -z ${PURGE_TARGETS[*]} ]] && return

	for target in ${PURGE_TARGETS[*]}
	do
		# check if target is a regex pattern without any slashes
		if [[ ${target} = ${target//\/} ]]
		then
			find ${BINDIR} -type f -name "${target}" | xargs --no-run-if-empty rm -f -- 2> /dev/null
		else
			rm -f -- ${target} 2> /dev/null
		fi
	done
}

mcompressdocs()
{
	local bindir="$@"

	if [ -d ${bindir}/usr/share/man ]
	then
		echo -e "${COLBLUE}===${COLGREEN} compressing man-pages ...${COLDEFAULT}"
		${MLIBDIR}/compressdoc -g -9 ${bindir}/usr/share/man
	fi
	
	if [ -d ${bindir}/usr/share/info ]
	then
		echo -e "${COLBLUE}===${COLGREEN} compressing info-pages ...${COLDEFAULT}"
		${MLIBDIR}/compressdoc -g -9 ${bindir}/usr/share/info
	fi
}

sminclude()
{
	local i

	if [[ -n "$@" ]]
	then
		for i in $@
		do
			echo "--- Including ${SMAGESCRIPTSDIR}/include/${i}.sminc"
			source ${SMAGESCRIPTSDIR}/include/${i}.sminc
		done
		echo
	fi
}

setup_distcc_environment()
{
	if [ -x /usr/bin/distcc ]
	then
		echo -e "${COLBLUE}---${COLGREEN} Using DistCC for compilation ...${COLDEFAULT}"
		export PATH=/usr/$(mlibdir)/distcc/bin:${PATH} || die "distcc: could not export new $PATH"

		export DISTCC_DIR="${DISTCC_DIR}" || die "distcc_dir export failed"

		# creating distcc tempdir
		install -o distcc -g daemon -d ${DISTCC_DIR}
		chmod 1777 ${DISTCC_DIR}
	fi
}

setup_ccache_environment()
{
	if [ -x /usr/bin/ccache ]
	then
		echo -e "${COLBLUE}---${COLGREEN} Using CCache for compilation ...${COLDEFAULT}"
		export PATH=/usr/$(mlibdir)/ccache/bin:${PATH} || die "ccache: could not export new $PATH"
	fi
}

# fixes given dependencies to match a MAGE_TARGET
# fix_mage_deps -target s/depend # <-- note -target !
fix_mage_deps()
{
	local target="$1"
	local depend="$2"
	local NDEPEND
	local sym dep cat pver pname

	# deps and provides are special
	# they must be fixed to match the target

	# run this only if target and depend is not empty
	if [ -n "${target}" ] && [ -n "${depend}" ]
	then
		# fix DEPEND
		while read sym dep
		do
			# ignore empty lines
			[[ -z ${dep} ]] && continue

			cat="$(dirname ${dep})"
			# change if not virtual
			if [[ ${cat} = virtual ]]
			then
				pname="$(basename ${dep})"
			else
				# fix pver to target-pver
				# to get pname-target-pver

				# doing it backwards !
				pver="${dep##*-}"
				# full pver
				pname="$(basename ${dep/-${pver}/})${target}-${pver}"
			fi

			# do not add empty lines
			if [ -z "${NDEPEND}" ]
			then
				NDEPEND="${sym} ${cat}/${pname}"
			else
				NDEPEND="${NDEPEND}
	${sym} ${cat}/${pname}"
			fi

			unset cat pname pver
		done << EOF
${depend}
EOF
		# set NDEPEND to DEPEND
		depend="${NDEPEND}"
	fi

	echo "${depend}"
}

# build_mage_script(): helper functions for regen_mage_tree()
# generates an mage file with given information in smage file
# needs at least:
#   PNAME                 name of pkg
#   PVER                  version
#   PBUILD                revision
#   PCAT                  category of the pkg
#   PCATEGORIE            category of the pkg (deprecated, use PCAT!)
#   STATE                 state of pkg stable|unstable|old
#   DESCRIPTION           a short description (opt)
#   HOMEPAGE              homepage (opt)
#   DEPEND                runtime dependencies (opt)
#   SDEPEND               adds needed deps to build the pkg (opt)
#   PROVIDE               provides a virtual (opt)
#
# special tags:
#   PKGTYPE               type of pkg
#   INHERITS              which functions get included
#   SPECIAL_FUNCTIONS     special functions which should also be added
#                         warning: they get killed before the build starts !
#   SPLIT_PACKAGES        names of all subpackages which are splitted from parent
#   SPLIT_PACKAGE_BASE    base package name for splitpackages
#                         (only in the resulting magefile}
#
#   MAGE_TREE_DEST        target destination of the generated tree
#   REGEN_MAGE_TREE       set to 'true' to enable this
#
# gets called with build_mage_script target
build_mage_script()
{
	local magefile
	local dest
	local target
	local split_pkg_base
	local sym
	local depname

	# if MAGE_TREE_DEST not set use BUILDDIR
	: ${MAGE_TREE_DEST=${BUILDDIR}/mage-tree}

	# determinate which suffix this mage file should get, if any
	[[ $1 = --target ]] && shift && target="-$1"

	# mark package as splitpackage
	[[ $1 = --split-pkg-base ]] && shift && split_pkg_base="$1"

	# name of magefile
	magefile="${PNAME}${target}-${PVER}-${PBUILD}.mage"

	# destination to magefile
	dest="${MAGE_TREE_DEST}/${PCAT}/${PNAME}${target}/${magefile}"

	# show what we are doing
	echo -e "${COLBLUE}===${COLGREEN} generating mage file:${COLDEFAULT}"
	echo "${dest}"

	install -d "$(dirname ${dest})"
	# now build the mage file
	> ${dest}

	# pgkname and state
	echo "PKGNAME=\"${PNAME}${target}-${PVER}-\${ARCH}-${PBUILD}\"" >> ${dest}
	echo "STATE=\"${STATE}\"" >> ${dest}

	# description and homepage
	echo "DESCRIPTION=\"${DESCRIPTION}\"" >> ${dest}
	echo "HOMEPAGE=\"${HOMEPAGE}\"" >> ${dest}

	# special tags and vars
	echo "PKGTYPE=\"${PKGTYPE}\""  >> ${dest}

	# echo MAGE_TARGETS ## note -target is needed !
	echo "MAGE_TARGETS=\"${target}\"" >> ${dest}

	# split package base
	echo "SPLIT_PACKAGE_BASE=\"${split_pkg_base}\"" >> ${dest}

	# add special vars
	if [ -n "${SPECIAL_VARS}" ]
	then
		local i
		for i in ${SPECIAL_VARS}
		do
			# being tricky here :)
			echo "${i}=\"$(eval echo \$${i})\"" >> ${dest}
		done
	fi

	# add at least all includes
	if [ -n "${INHERITS}" ]
	then
		echo -n "minclude"  >> ${dest}
		local i
		for i in ${INHERITS}
		do
			echo -n " ${i}"  >> ${dest}
		done
		# a CRLF is needed here!
		echo >> ${dest}
	fi

	# deps and provides
	echo "DEPEND=\"$(fix_mage_deps "${target}" "${DEPEND}")\"" >> ${dest}
	echo "SDEPEND=\"$(fix_mage_deps "${target}" "${SDEPEND}")\"" >> ${dest}
	echo "PROVIDE=\"${PROVIDE}\"" >> ${dest}

	# add special functions
	if [ -n "${SPECIAL_FUNCTIONS}" ]
	then
		local i
		for i in ${SPECIAL_FUNCTIONS}
		do
			# add to mage (quotes needed !)
			typeset -f "${i}" >> ${dest}
			# unset to be safe (quotes needed !)
			#unset "${i}" <-- later to get every target built
		done
	fi

	# pre|post-install|removes
	typeset -f preinstall >> ${dest}
	typeset -f postinstall >> ${dest}
	typeset -f preremove >> ${dest}
	typeset -f postremove >> ${dest}
}

regen_mage_tree()
{
	local subpackage

	# build them only if requested
	if mqueryfeature regentree
	then
		# run it without targets
		if [[ -n ${MAGE_TARGETS} ]]
		then
			# build for each target a mage file
			# run it with several targets
			echo
			for subpackage in ${MAGE_TARGETS}
			do
				build_mage_script --target "${subpackage}"
			done
			echo

		# run it for splitpackages
		elif [[ -n ${SPLIT_PACKAGES} ]]
		then
			local split_pkg_base="${PNAME}"
			# save smage environment
			split_save_variables
			# build for each subpackage a mage file
			# run it with several targets
			echo
			for subpackage in ${SPLIT_PACKAGES}
			do
				# get the right variables for the split
				export PNAME="${subpackage}"
				split_info_${subpackage}
				# get the preinstall etc
				split_export_inherits ${subpackage}
				build_mage_script --split-pkg-base "${split_pkg_base}"
				# delete split preinstall etc
				split_delete_inherits ${subpackage}
				# restore smage environment
				split_restore_variables
			done
			echo
			# unset all saved smage variables
			split_unset_variables

		else
			echo
			build_mage_script
			echo
		fi
	fi

	# now unset all uneeded vars to be safe
	# unset PKGNAME <-- don't do that; smage needs this var
	# unset to be safe (quotes needed !)
#	for i in ${SPECIAL_FUNCTIONS}
#	do
#		unset "${i}"
#	done
	unset SPECIAL_FUNCTIONS
#	for i in ${SPECIAL_VARS}
#	do
#		unset "${i}"
#	done
	unset SPECIAL_VARS
	unset STATE
	unset DESCRIPTION
	unset HOMEPAGE
	# unset PKGTYPE <-- don't do that either; smage needs this var
	unset INHERITS
	unset DEPEND
	unset SDEPEND
	unset PROVIDE
	unset preinstall
	unset postinstall
	unset preremove
	unset postremove
}

split_save_variables()
{
	export SAVED_PNAME="${PNAME}"
	export SAVED_PVER="${PVER}"
	export SAVED_PBUILD="${PBUILD}"
	export SAVED_PCAT="${PCAT}"
	export SAVED_DESCRIPTION="${DESCRIPTION}"
	export SAVED_HOMEPAGE="${HOMEPAGE}"
	export SAVED_SPECIAL_VARS="${SPECIAL_VARS}"
	export SAVED_STATE="${STATE}"
	export SAVED_PKGTYPE="${PKGTYPE}"
	export SAVED_INHERITS="${INHERITS}"
	export SAVED_DEPEND="${DEPEND}"
	export SAVED_SDEPEND="${SDEPEND}"
	export SAVED_PROVIDE="${PROVIDE}"
	export SAVED_PKGTYPE="${PKGTYPE}"

	# special handling needed for mage features
	# pkgbuild
	mqueryfeature "pkgbuild" && export SAVED_FEATURE_PKGBUILD="pkgbuild"
	mqueryfeature "!pkgbuild" && export SAVED_FEATURE_PKGBUILD="!pkgbuild"
	# strip
	mqueryfeature "strip" && export SAVED_FEATURE_STRIP="strip"
	mqueryfeature "!strip" && export SAVED_FEATURE_STRIP="!strip"
	# libtool
	mqueryfeature "libtool" && export SAVED_FEATURE_LIBTOOL="libtool"
	mqueryfeature "!libtool" && export SAVED_FEATURE_LIBTOOL="!libtool"
	# compressdoc
	mqueryfeature "compressdoc" && export SAVED_FEATURE_COMPRESSDOC="compressdoc"
	mqueryfeature "!compressdoc" && export SAVED_FEATURE_COMPRESSDOC="!compressdoc"

	# bindir too
	export SAVED_BINDIR="${BINDIR}"

	# export the SPLIT_PACKAGE_BASE
	export SPLIT_PACKAGE_BASE="${SAVED_PNAME}"

	# functions
	if [[ ! -z $(typeset -f preinstall) ]]
	then
		# rename the old one
		local saved_preinstall
		saved_preinstall=SAVED_$(typeset -f preinstall)
		eval "${saved_preinstall}"
		export -f SAVED_preinstall
	fi

	if [[ ! -z $(typeset -f postinstall) ]]
	then
		# rename the old one
		local saved_postinstall
		saved_postinstall=SAVED_$(typeset -f postinstall)
		eval "${saved_postinstall}"
		export -f SAVED_postinstall
	fi

	if [[ ! -z $(typeset -f preremove) ]]
	then
		# rename the old one
		local saved_preremove
		saved_preremove=SAVED_$(typeset -f preremove)
		eval "${saved_preremove}"
		export -f SAVED_preremove
	fi

	if [[ ! -z $(typeset -f postremove) ]]
	then
		# rename the old one
		local saved_postremove
		saved_postremove=SAVED_$(typeset -f postremove)
		eval "${saved_postremove}"
		export -f SAVED_postremove
	fi
}

split_restore_variables()
{
	export PNAME="${SAVED_PNAME}"
	export PVER="${SAVED_PVER}"
	export PBUILD="${SAVED_PBUILD}"
	export PCAT="${SAVED_PCAT}"
	export DESCRIPTION="${SAVED_DESCRIPTION}"
	export HOMEPAGE="${SAVED_HOMEPAGE}"
	export SPECIAL_VARS="${SAVED_SPECIAL_VARS}"
	export STATE="${SAVED_STATE}"
	export PKGTYPE="${SAVED_PKGTYPE}"
	export INHERITS="${SAVED_INHERITS}"
	export DEPEND="${SAVED_DEPEND}"
	export SDEPEND="${SAVED_SDEPEND}"
	export PROVIDE="${SAVED_PROVIDE}"
	export PKGTYPE="${SAVED_PKGTYPE}"

	# special handling needed for mage features
	# pkgbuild
	FVERBOSE=off msetfeature "${SAVED_FEATURE_PKGBUILD}"
	# strip
	FVERBOSE=off msetfeature "${SAVED_FEATURE_STRIP}"
	# libtool
	FVERBOSE=off msetfeature "${SAVED_FEATURE_LIBTOOL}"
	# compressdoc
	FVERBOSE=off msetfeature "${SAVED_FEATURE_COMPRESSDOC}"

	# bindir too
	export BINDIR="${SAVED_BINDIR}"

	# functions
	if [[ ! -z $(typeset -f SAVED_preinstall) ]]
	then
		# rename the old one
		local saved_preinstall
		saved_preinstall=$(typeset -f SAVED_preinstall)
		eval "${saved_preinstall/SAVED_/}"
		export -f preinstall
	fi

	if [[ ! -z $(typeset -f SAVED_postinstall) ]]
	then
		# rename the old one
		local saved_postinstall
		saved_postinstall=$(typeset -f SAVED_postinstall)
		eval "${saved_postinstall/SAVED_/}"
		export -f postinstall
	fi

	if [[ ! -z $(typeset -f SAVED_preremove) ]]
	then
		# rename the old one
		local saved_preremove
		saved_preremove=$(typeset -f SAVED_preremove)
		eval "${saved_preremove/SAVED_/}"
		export -f preremove
	fi

	if [[ ! -z $(typeset -f SAVED_postremove) ]]
	then
		# rename the old one
		local saved_postremove
		saved_postremove=$(typeset -f SAVED_postremove)
		eval "${saved_postremove/SAVED_/}"
		export -f postremove
	fi
}

split_unset_variables()
{
	# unset saved vars; not needed anymore
	unset SAVED_PNAME
	unset SAVED_PVER
	unset SAVED_PBUILD
	unset SAVED_PCAT
	unset SAVED_DESCRIPTION
	unset SAVED_HOMEPAGE
	unset SAVED_SPECIAL_VARS
	unset SAVED_STATE
	unset SAVED_PKGTYPE
	unset SAVED_INHERITS
	unset SAVED_DEPEND
	unset SAVED_SDEPEND
	unset SAVED_PROVIDE
	unset SAVED_BINDIR
	unset SAVED_PKGTYPE
	unset SAVED_FEATURE_PKGBUILD
	unset SAVED_FEATURE_STRIP
	unset SAVED_FEATURE_LIBTOOL
	unset SAVED_FEATURE_COMPRESSDOC
	unset SPLIT_PACKAGE_BASE
	unset -f SAVED_preinstall
	unset -f SAVED_postinstall
	unset -f SAVED_preremove
	unset -f SAVED_postremove
}

split_export_inherits()
{
	local subpackage="$1"
	local func
	local newfunc

	for func in preinstall postinstall preremove postremove
	do
		if [[ ! -z $(typeset -f ${func}_${subpackage}) ]]
		then
			newfunc=$(typeset -f ${func}_${subpackage})
			newfunc="${newfunc/_${subpackage} (/ (}"
			eval "${newfunc}"
		fi
	done
}

split_delete_inherits()
{
	 local subpackage="$1"
	 local func

	for func in preinstall postinstall preremove postremove
	do
		if [[ ! -z $(typeset -f ${func}_${subpackage}) ]]
		then
			unset -f ${func}
		fi
	done
 }

export_inherits()
{
	local include="$1"
	shift

	while [ "$1" ]
	do
		local functions="$1"

		# sanity checks
		[ -z "${include}" ] && die "export_inherits(): \$include not given."
		[ -z "${functions}" ] && die "export_inherits(): \$functions not given."

		eval "${functions}() { ${include}_${functions} ; }"

		# debug
		[[ ${MAGEDEBUG} = on ]] && typeset -f "${functions}"

		shift
	done
}

generate_package_md5sum()
{
	local dest
	local pcat
	local pname
	local pver
	local pbuild
	local parch
	local target
	local pkgname

	# very basic getops
	for i in $*
	do
		case $1 in
			--pcat|-c) shift; pcat="$1" ;;
			--pname|-n) shift; pname="$1" ;;
			--pver|-v) shift; pver="$1" ;;
			--pbuild|-b) shift; pbuild="$1" ;;
			--parch|a) shift; parch="$1" ;;
			--target|t) shift; target="$1" ;;
		esac
		shift
	done

	# sanity checks; abort if not given
	[ -z "${pcat}" ] && die "generate_package_md5sum() \$pcat not given."
	[ -z "${pname}" ] && die "generate_package_md5sum() \$pname not given."
	[ -z "${pver}" ] && die "generate_package_md5sum() \$pver not given."
	[ -z "${pbuild}" ] && die "generate_package_md5sum() \$pbuild not given."
	[ -z "${parch}" ] && die "generate_package_md5sum() \$parch not given."

	# check needed global vars
	[ -z "${PKGDIR}" ] && die "generate_package_md5sum() \$PKGDIR not set."
	[ -z "${PKGSUFFIX}" ] && die "generate_package_md5sum() \$PKGSUFFIX not set."

	# fix target as it may be empty !
	[ -n "${target}" ] && target="-${target}"

	# build pkgname
	pkgname="${pname}${target}-${pver}-${parch}-${pbuild}"

	# build pkg-md5-sum only if requested
	if mqueryfeature regentree
	then
		echo -ne "${COLBLUE}===${COLGREEN} generating md5's for ${pkgname}.${PKGSUFFIX} ... ${COLDEFAULT}"

		# abort if not exist
		if [ ! -f ${PKGDIR}/${pkgname}.${PKGSUFFIX} ]
		then
			echo -e "${COLRED}! exists${COLDEFAULT}"
			return 0
		fi

		# if MAGE_TREE_DEST not set use BUILDDIR
		: ${MAGE_TREE_DEST=${BUILDDIR}/mage-tree}

		# setup md5 dir
		dest="${MAGE_TREE_DEST}/${pcat}/${pname}${target}/md5"
		install -d ${dest}

		# gen md5sum
		( cd ${PKGDIR}; md5sum "${pkgname}.${PKGSUFFIX}" ) \
			> ${dest}/${pkgname}.md5
		echo -e "${COLGREEN}done${COLDEFAULT}"
	fi
}

source_pkg_build()
{
	if [[ ${PKGTYPE} = virtual ]]
	then
		echo "Virtual package detected; src-pkg-tarball not necessary ..."
		return 0
	fi

	if [[ ! -d ${SOURCEDIR}/${PNAME} ]]
	then
		echo "No SRC_URI defined; src-pkg-tarball not necessary ..."
		return 0
	fi

	[ -z "${SRCPKGDIR}" ] && die "\$SRCPKGDIR not found. Please setup your ${MAGERC} correctly."

	echo -e "${COLGREEN}Creating source package tarball ... ${COLDEFAULT}"

	# include the smage2 file
	cp ${SMAGENAME} ${SOURCEDIR}/${PNAME}

	( cd ${SOURCEDIR}; tar cvjf ${BUILDDIR}/${PNAME}-${PVER}-${PBUILD}.tar.bz2 ${PNAME}; )
	[[ ! -d ${SRCPKGDIR} ]] && install -d ${SRCPKGDIR}
	mv ${BUILDDIR}/${PNAME}-${PVER}-${PBUILD}.tar.bz2 ${SRCPKGDIR}/${PNAME}-${PVER}-${PBUILD}.${SRCPKGSUFFIX}

	echo -e "${COLGREEN}Source package ${COLBLUE}${PNAME}-${PVER}-${PBUILD}.${SRCPKGSUFFIX} ${COLGREEN}successfully builded.${COLDEFAULT}"
}

step_by_step()
{
	if mqueryfeature stepbystep
	then
		echo -e "${COLRED}Step-by-step enabled! Paused after $1.${COLDEFAULT}"
		echo "Press [enter] to continue"
		read
	fi
}

resume_stamp()
{
	local step="$1"
	[[ ! -d ${BUILDDIR}/.stamps ]] && install -d ${BUILDDIR}/.stamps
	touch ${BUILDDIR}/.stamps/smage-${PKGNAME}-${step}
}

run_resume()
{
	local step="$1"

	if mqueryfeature "resume" && [[ -f ${BUILDDIR}/.stamps/smage-${PKGNAME}-${step} ]]
	then
		echo -e "${COLMAGENTA}${step} already processed; doing nothing${COLDEFAULT}"
		return 0
	else
		return 1
	fi
}