#!/bin/bash
# 26.08.2004 <niro@magellan-linux.de>

###################################################
# function install_direcories                     #
#	install_direcories $PKGNAME               #
###################################################
install_directories() {
	local PKGNAME
	PKGNAME=$1
	
	if [ -e ${BUILDDIR}/${PKGNAME}/.dirs ]
	then
	
		#sets fieldseperator to "§" instead of " "
		IFS=§
		
		while read pathto posix user group
		do
			if [ ! -z $pathto ]
			then
				echo -e "\t>>> DIR:  ${ROOT}$pathto"
				install -m $posix -o $user -g $group -d ${ROOT}${pathto}
			fi
		done < ${BUILDDIR}/${PKGNAME}/.dirs
		
		#very important: unsetting the '§' fieldseperator
		unset IFS
	else
		fatal_error .dir
	fi
}


###################################################
# function install_files                          #
#	install_files $PKGNAME                    #
###################################################
install_files(){
	local PKGNAME
	local RETVAL
	local COUNTER
	local FILENAME
	local DESTINATION
	
	PKGNAME=$1
	
	if [ -e ${BUILDDIR}/${PKGNAME}/.files ]
	then
		#sets fieldseperator to "§" instead of " "
		IFS=§
		
		while read pathto posix user group mtime md5sum
		do
			if [ ! -z $pathto ]
			then
				echo -e "\t>>> FILE: ${ROOT}${pathto}"
				
				### kleiner notfall fix ###
				if [ ! -d `dirname $pathto` ]
				then
					install -d `dirname ${ROOT}${pathto}`
				fi
				
				FILE="${pathto}"
				install -m ${posix} -o ${user} -g ${group} \
					${BUILDDIR}/${PKGNAME}/binfiles/$FILE \
					${ROOT}${pathto}
			fi
		done < ${BUILDDIR}/${PKGNAME}/.files
		
		#very important: unsetting the '§' fieldseperator
		unset IFS
	else
		fatal_error .files
	fi
}


###################################################
# function install_symlinks                       #
#	install_symlinks $PKGNAME                 #
###################################################
install_symlinks() {
	local PKGNAME
	PKGNAME=$1
	
	if [ -e ${BUILDDIR}/${PKGNAME}/.symlinks ]
	then
		#sets fieldseperator to "§" instead of " "
		IFS=§
		
		while read pathto posix link mtime
		do
			if [ ! -z $pathto ]
			then
				echo -e "\t>>> LINK: ${ROOT}${pathto}"
				ln -snf $link ${ROOT}${pathto}
			fi
		done < ${BUILDDIR}/${PKGNAME}/.symlinks
		
		#very important: unsetting the '§' fieldseperator
		unset IFS
	else
		fatal_error .symlinks
	fi
}


###################################################
# function install_blockdevices                   #
#	install_blockdevices $PKGNAME             #
###################################################
install_blockdevices() {
	local PKGNAME
	PKGNAME=$1
	
	if [ -e ${BUILDDIR}/${PKGNAME}/.pipes ]
	then
		#sets fieldseperator to "§" instead of " "
		IFS=§
		
		while read pathto posix
		do
			if [ ! -z $pathto ]
			then
				echo -e "\t>>> PIPE: ${ROOT}${pathto}"
				mkfifo -m $posix ${ROOT}${pathto}
			fi
		done < ${BUILDDIR}/${PKGNAME}/.pipes
		
		#very important: unsetting the '§' fieldseperator
		unset IFS
	else
		fatal_error .pipes
	fi
}


###################################################
# function install_characterdevices               #
#	install_characterdevices $PKGNAME         #
###################################################
install_characterdevices() {
	local PKGNAME
	PKGNAME=$1
	
	if [ -e ${BUILDDIR}/${PKGNAME}/.char ]
	then
		#sets fieldseperator to "§" instead of " "
		IFS=§
		
		while read pathto posix
		do
			if [ ! -z $pathto ]
			then
				echo -e "\t>>> CHAR: ${ROOT}${pathto}"
				mknode -m $posix -c ${ROOT}${pathto}
			fi
		done < ${BUILDDIR}/${PKGNAME}/.char
		
		#very important: unsetting the '§' fieldseperator
		unset IFS
	else
		fatal_error .char
	fi

	#very important: unsetting the '§' fieldseperator
	unset IFS
}


###################################################
# function build_doinstall                        #
#	build_doinstall $PKGNAME                  #
# NOTE: this is an wrapper do install packages    #
###################################################
build_doinstall() {
	#this is only a wrapper
	
	# NOTE:
	# !! we use § as field seperator !!
	# doing so prevent us to get errors by filenames with spaces
	
	local PKGNAME
	PKGNAME=$1
	
	install_directories ${PKGNAME}
	install_files ${PKGNAME}
	install_symlinks ${PKGNAME}
	install_blockdevices ${PKGNAME}
	install_characterdevices ${PKGNAME}
}

usage(){
	echo
	echo -e "Usage:"
	echo -e "$(basename $0) /path/to/foo.mpk"
	echo
	echo -e "Use ROOT=/path/to/install-location"
	echo -e "to overide the default-root '/'"
	echo

	exit 1
}

[ -z "$1" ] && usage

PKGFILE=$1
PKGNAME=$(basename ${PKGFILE} .mpk)


if [ -z "${BUILDDIR}" ] 
then
	export BUILDDIR=/var/tmp/magebuild
	install -d ${BUILDDIR}
fi

echo -e "\nInstallation of Package: ${COLGREEN}${PKGNAME/-${ARCH}/}${COLDEFAULT}\n"
echo -en "Unpacking Package ... "
tar xjmf ${PKGFILE} -C ${BUILDDIR}
echo "done"

#fake root ?
if [ -n "${ROOT}" ]
then
	echo
	echo "Installing package to fake ROOT '${ROOT}'"
	echo
fi

#build_doinstall
build_doinstall ${PKGNAME}

#cleanup
if [ -d ${BUILDDIR}/${PKGNAME} ]
then
	rm -rf ${BUILDDIR}/${PKGNAME}
fi

echo -e "\nPackage '${PKGNAME/-${ARCH}/}' sucessfully installed.\n"