path: root/packages/altboot/files/altbootctl

#! /bin/sh
#
# Copyright Matthias Hentges <devel@hentges.net> (c) 2006
# License: GPL (see http://www.gnu.org/licenses/gpl.txt for a copy of the license)
#
# Filename: hentges-setup.sh
# Date: 03-Jun-06

die() {
	echo -e "$*"
	exit 1
}


PERMANENT_CFG="/etc/altboot-`uname -r | cut -c1-3`.cfg"
TEMPORARY_CFG="/etc/altboot-`uname -r | cut -c1-3`.cfg.next-reboot"

CFG="$PERMANENT_CFG"
SCRIPT_CONFIG="/etc/altbootctl.conf"

test -e "$SCRIPT_CONFIG" && . "$SCRIPT_CONFIG" || die "$SCRIPT_CONFIG not found"

# $1= Setting, $2 = new value
set_pref() {
	
	if ( cat "$CFG" | grep -q "$1" )
	then
		cat "$CFG" | sed "/^$1/s/\(.*\)\=\(.*\)/\1\=\"$2\"/" > ${CFG}_
		mv ${CFG}_  ${CFG}
	else
		echo "$1=\"$2\"" >> "${CFG}"
	fi
}

# $1= Setting
get_pref() {
	n="$1"
	value="`cat "${CFG}" | sed -n "/^$n/s/\(.*\)\=\\"\(.*\)\\"/\2/p"`"
	#echo "cat "${CFG}" | sed -n "/^$n/s/\(.*\)\=\"\(.*\)\"/\2/p""
	test -z "$value" && die "Couldn't get value for [$n]"
	echo "$value"
}

ask_pref() {
	SETTING_NAME="$1"
	
	SETTING_TEXT_="${SETTING_NAME}_TEXT"
	SETTING_TEXT="`eval echo -e \\$${SETTING_TEXT_}`"	

	SETTING_VALUES_="${SETTING_NAME}_VALUES"
	SETTING_VALUES="`eval echo -e \\$${SETTING_VALUES_}`"	
	
	SETTING_OLD_VALUE="`get_pref "$SETTING_NAME"`"
	test -z "$SETTING_TEXT" -o -z "$SETTING_VALUES" && die "ask_pref: [$1] -> [$SETTING_TEXT] [$SETTING_VALUES]"
	
	#echo "[$1] -> $SETTING_OLD_VALUE"
	#echo -e "$SETTING_TEXT"


	if test "$SETTING_VALUES" = "<STRING>"
	then				
		while true
		do
			echo -e "\nPlease enter a new value [$SETTING_OLD_VALUE]"
			echo -en "Your Choice: "
			read junk
			
			echo ""
						
			while true
			do
				echo -n "Is the new value of [$junk] correct? [Y|n] "
				read junk2
				
				case "$junk2" in
				y|Y|"")		END_LOOP=true
						break ;;
				*)		END_LOOP=false
						break ;;
				esac
			done
			
			if test "$END_LOOP" = "true"
			then
				SETTING_NEW_VALUE="$junk"
				break
			fi
		
		done
		
	else	
		# If it's not a string, it's a fixed list of possible settings
		echo -e "\nSelect one of the following:\n"	
		cnt=1	
		for val in $SETTING_VALUES
		do
			if test "$val" != "$SETTING_OLD_VALUE"
			then
				echo -e "\t[$cnt] $val"
			else
				echo -e "\t[$cnt] $val *"
				SETTING_OLD_VALUE_NUM="$cnt"
			fi
			let cnt=$cnt+1
		done

		echo ""
		while true
		do
			echo -en "Your choice [$SETTING_OLD_VALUE_NUM]: "
			read junk		

			if test -n "$junk"
			then
				cnt=1 ; SETTING_NEW_VALUE=""
				for val in $SETTING_VALUES
				do
					if test "$junk" = "$cnt"
					then
						SETTING_NEW_VALUE="$val"
						break
					fi

					let cnt=$cnt+1
				done
			else
				SETTING_NEW_VALUE="$SETTING_OLD_VALUE"
			fi

			test -n "$SETTING_NEW_VALUE" && break
		done
		
	fi
		
	
	if test "$SETTING_NEW_VALUE" != "$SETTING_OLD_VALUE"
	then
		set_pref "$SETTING_NAME" "$SETTING_NEW_VALUE"
		echo "Changed $SETTING_NAME to $SETTING_NEW_VALUE"
	else
		echo "$SETTING_NAME remains unchanged"
	fi
	echo -e "\n"
}

build_menu() {
	for setting in $TARGETS
	do	
		# SETTING_MENUPOS contains $setting_MENUPOS
		SETTING_MENUPOS_="${setting}_MENUPOS"
		SETTING_MENUPOS="`eval echo -e \\$${SETTING_MENUPOS_}`"	

		# Store all entries in variables named after the menu name
		MENU_NAME="SUBMENU_${SETTING_MENUPOS}"
		export "${MENU_NAME}"="`eval echo -e \\$${MENU_NAME} ` $setting"
		
		
		echo "$AVAILABLE_MENUES" | grep -q "$SETTING_MENUPOS" || AVAILABLE_MENUES="$SETTING_MENUPOS $AVAILABLE_MENUES"
						
	done	
	
	#echo "[$AVAILABLE_MENUES]"
	
	while true
	do
		echo -e "\nSelect a menu:\n"
		cnt=1
		for menu in $AVAILABLE_MENUES Exit
		do
			MENU_NAME="SUBMENU_$menu"
			echo -e "\t[$cnt] $menu"
			let cnt=$cnt+1
		done
		
		echo ""
		
		while true
		do
			echo -n "Your Choice: "
			read junk

			cnt=1 ; GET_MENU=""
			for menu in $AVAILABLE_MENUES Exit
			do
				if test "$cnt" = "$junk"
				then
					GET_MENU="$menu"
					break
				fi
				let cnt=$cnt+1
			done

			if test "$GET_MENU" = "Exit"
			then
				EXIT_PROG=true
				break
			else
				EXIT_PROG=false
			fi
			
			if test -n "$GET_MENU"
			then
				show_menu "$menu"
				break
			fi
		done		
		test "$EXIT_PROG" = true && break
	done
}

show_menu() {
	MENU_NAME="SUBMENU_$1"

	
	while true
	do
		echo -e "\nEntries in this menu:\n"
		cnt=1
		for entry in `eval echo -e \\$${MENU_NAME}` Back
		do
			MENU_NAME_TEXT="${entry}_TEXT" || MENU_NAME_TEXT="${entry}"
			
			test "$entry" != Back && tmp_="`eval echo -e \\$${MENU_NAME_TEXT}`" || tmp_="Back"
			
			echo -e "\t[$cnt] $tmp_"
			let cnt=$cnt+1
		done	

		echo ""
	
		while true
		do
			echo -en "Your Choice: "
			read junk

			cnt=1 ; GET_ENTRY=""
			for entry in `eval echo -e \\$${MENU_NAME}` Back
			do
				if test "$cnt" = "$junk"
				then
					GET_ENTRY="$entry"
					break
				fi
				let cnt=$cnt+1
			done

			if test "$GET_ENTRY" = "Back"
			then
				EXIT_MENU=true
				break
			else
				EXIT_MENU=false
			fi
			
			
			# At this point the user has selected a menuitem != "Back"
			if test -n "$GET_ENTRY"
			then
				select_config
				ask_pref "$GET_ENTRY"
				break
			fi
		done	
		
		test "$EXIT_MENU" = true && break		
	done
}

select_config() {
	echo -e "\nChange this setting only for the next reboot or permanently?\n"

	echo -e "Select one of the following:\n"

	echo -e "\t[1] Only for the next reboot"
	echo -e "\t[2] Permanently"
	echo ""
	
	while true
	do
		echo -en "Your Choice: "
		read junk
		
		case "$junk" in
		2)	CFG="$PERMANENT_CFG"
			break ;;
		1)	CFG="$TEMPORARY_CFG"
			break ;;
		esac		
	done
	
	# Supress error message about missing config
	! test -e "$CFG" && touch "$CFG"
	
}

go() {
	build_menu
	
	exit 0
	for setting in $TARGETS
	do
		ask_pref "$setting"
	done
	
}


! test -e "$CFG" && die "[$CFG] not found, exiting"
go