#!/bin/sh

## =================================================================
## Logtalk - Object oriented extension to Prolog
## Release 2.29.5
##
## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
## =================================================================

echo
echo "Creating a script named plclgt for running Logtalk with K-Prolog..."
echo

if ! [ "$LOGTALKHOME" ]
then
	echo "The environment variable LOGTALKHOME must be defined first!"
	echo
	exit 1
fi

if ! [ -d "$LOGTALKHOME" ]; then
	echo "The environment variable LOGTALKHOME points to a non-existing directory!"
	echo "Its current value is: $LOGTALKHOME"
	echo "The variable must be set to your Logtalk installation directory!"
	echo
	exit 1
fi

if [ -z "$1" ]; then
	prefix=/usr/local
else
	prefix="$1"
fi

if ! [ -d "$prefix" ]; then
	echo "Directory prefix does not exist!"
	echo
	exit 1
fi

cd "$LOGTALKHOME"
mkdir -p bin
cd bin
echo ":- ensure_loaded('\$LOGTALKUSER/configs/k.config')." > logtalk_plc.pl
echo ":- ensure_loaded('\$LOGTALKHOME/compiler/logtalk.pl')." >> logtalk_plc.pl
echo ":- ensure_loaded('\$LOGTALKUSER/libpaths/libpaths.pl')." >> logtalk_plc.pl
echo "#/bin/sh" > plclgt
echo "\$PLC/plc -h 2048k -l 1024k -g 2048k -e \"(consult('\\\$LOGTALKHOME/bin/logtalk_plc.pl'), '\\\$root').\" \"\$@\"" >> plclgt
chmod a+x plclgt
ln -sf $LOGTALKHOME/bin/plclgt $prefix/bin/plclgt
echo "Done. A link to the script was been created in $prefix/bin."
echo
echo "Users should ensure that the environment variables LOGTALKHOME"
echo "and LOGTALKUSER are defined and then run the \"cplgtdirs\" script"
echo "once prior to using the plclgt script."
echo