#!/bin/sh
#
# Sets up/selects a dialog program.
#


# Taken from 'menuconfig' in the Linux source tree.
set_geometry () {
	# Some distributions export these with incorrect values
	# which can really screw up some ncurses programs.
	LINES=  COLUMNS=

	ROWS=${1:-24}  COLS=${2:-80} 

	# Just in case the nasty rlogin bug returns.
	#
	[ $ROWS = 0 ] && ROWS=24
	[ $COLS = 0 ] && COLS=80

	if [ $ROWS -lt 19 -o $COLS -lt 80 ]
	then
		echo -e "\n\007Your display is too small to run $0!"
		echo "It must be at least 19 lines by 80 columns."
		exit 0
	fi 

	ROWS=$((ROWS-4))  COLS=$((COLS-5))
}

# Preference is 'lxdialog';'dialog 0.6';'dialog 0.4'
select_dialog() {
	if [ "$USING_BIN_DIST" = "1" ]; then
		DIALOG=`pwd`/demudialog/demudialog
		DIALOG_SUPPORTS_CURRENT=true
		DIALOG_SUPPORTS_VALUE=true
		return
	fi
	if [ ! -x ${TOPDIR}/setup/demudialog/demudialog ]; then
	  if [ ! -f ${TOPDIR}/setup/demudialog/tried-compile ]; then
		(cd ${TOPDIR}/setup/demudialog; make)
		touch ${TOPDIR}/setup/demudialog/tried-compile
	  fi
	fi
	if [ -x ${TOPDIR}/setup/demudialog/demudialog ]
	then
#		DIALOG=support/lxdialog-wrap
		DIALOG=${TOPDIR}/setup/demudialog/demudialog
		DIALOG_SUPPORTS_CURRENT=true
		DIALOG_SUPPORTS_VALUE=true
	elif (grep "version 0\.4" `which dialog` > /dev/null)
	then
#		DIALOG=support/dialog0.4-wrap
		DIALOG_SUPPORTS_CURRENT=false
		DIALOG_SUPPORTS_VALUE=false
		DIALOG=dialog
	else
		DIALOG=dialog
		DIALOG_SUPPORTS_CURRENT=false
		DIALOG_SUPPORTS_VALUE=false
	fi
}

set_geometry
select_dialog