#!/bin/sh

# version: 0.3.6-r9
#
# rebuilds /etc/{ld.so.conf,profile.env} with given files from /etc/env.d
#

##
# exp. /etc/env.d/kde
#
#	PATH="/opt/kde/bin"
#	ROOTPATH="/opt/kde/bin"
#	LDPATH="/opt/kde/lib"
#
##

#sets root path
P=""
SPECIALVARS="KDEDIRS PATH CLASSPATH LDPATH MANPATH INFODIR INFOPATH ROOTPATH CONFIG_PROTECT CONFIG_PROTECT_MASK PRELINK_PATH PRELINK_PATH_MASK"
#SPECIALVARS="KDEDIRS PATH LDPATH MANPATH INFODIR INFOPATH ROOTPATH CLASSPATH"

echo -en "\n>>>> Rebuilding environment... "

#deletes existing conf files
if [ -f ${P}/etc/ld.so.conf ]
then
	rm ${P}/etc/ld.so.conf
fi

if [ -f ${P}/etc/profile.env ]
then
	rm ${P}/etc/profile.env
fi

#gets everything in /etc/env.d
for file in ${P}/etc/env.d/*
do
	#reads content of every file
	while read path
	do
		if [ -n "$path" ]
		then
			#writes LDPATH to ${P}/etc/ld.so.conf,
			#anything else to ${P}/etc/profile.env
			if [ "${path%%=*}" == LDPATH ]
			then
				#substitudes " from $path if exists
				path="${path//\"}"
				echo "${path##*=}" >> ${P}/etc/ld.so.conf
			else
				#checks if var exists in specialvars
				for i in $SPECIALVARS
				do
					if [ "${path%%=*}" == "$i" ]
					then
						SPECVAR="yes"
					fi
				done

				if [ "$SPECVAR" == "yes" ]
				then
					if [ "${path%%=*}" == "CONFIG_PROTECT" -o "${path%%=*}" == "CONFIG_PROTECT_MASK" ]
					then
						#CONFIG_PROTECTS has as delimiter  not ':'  but ' '
						path="${path//\"}"
						echo -n "${path##*=} " >> /var/tmp/${path%%=*}
						unset SPECVAR
					else
						#special var are written to tmpfile
						# to substitude them to one variable
						#substitudes " from $path if exists
						path="${path//\"}"
 						echo -n "${path##*=}:" >> /var/tmp/${path%%=*}
						unset SPECVAR
					fi
				else
					#all other vars go directly to /etc/profile.env
					echo "export $path" >> ${P}/etc/profile.env
				fi
			fi
		fi
	done << EOF
$(cat $file)
EOF

done

#reads special vars tmp files and writes them to /etc/profile.env
for i in $SPECIALVARS
do
	if [ -f /var/tmp/${i} ]
	then
		echo "export ${i}=\"`cat /var/tmp/${i}`\"" >> ${P}/etc/profile.env
		rm /var/tmp/${i}
	fi
done

#rebuilds environment
ldconfig
source ${P}/etc/profile

echo -e "done.\n"