#!/bin/bash

## ================================================================
## Logtalk - Open source object-oriented logic programming language
## Release 2.30.7
##
## Copyright (c) 1998-2007 Paulo Moura.  All Rights Reserved.
## ================================================================

echo ""
echo "Checking for the Logtalk environment variable definitions..."
echo ""

if grep "LOGTALKHOME=/opt/local/share/logtalk" /etc/profile >/dev/null 2>&1; then
	echo "Logtalk environment variables default values already set for bash!"
else
	/bin/cp -fp /etc/profile /etc/profile.lgtsaved
	echo '' >> /etc/profile
	echo '# Logtalk environment variables default values' >> /etc/profile
	echo 'LOGTALKHOME=/opt/local/share/logtalk' >> /etc/profile
	echo 'LOGTALKUSER=$HOME/logtalk' >> /etc/profile
	echo 'export LOGTALKHOME LOGTALKUSER' >> /etc/profile
fi

if grep "setenv LOGTALKHOME /opt/local/share/logtalk" /etc/csh.cshrc >/dev/null 2>&1; then
	echo "Logtalk environment variables default values already set for csh!"
else
	/bin/cp -fp /etc/csh.cshrc /etc/csh.cshrc.lgtsaved
	echo '' >> /etc/csh.cshrc
	echo '# Logtalk environment variables default values' >> /etc/csh.cshrc
	echo "setenv LOGTALKHOME /opt/local/share/logtalk" >> /etc/csh.cshrc
	echo 'setenv LOGTALKUSER $HOME/logtalk' >> /etc/csh.cshrc
fi

echo ""
echo "Creating a link to the Logtalk installation folder in the /Applications folder..."
ln -sf /opt/local/share/logtalk /Applications/Logtalk

echo ""
echo "You have succesfully installed Logtalk!"
echo ""