#! /bin/sh

## =================================================================
## Logtalk - Object oriented extension to Prolog
## Release 2.25.1
##
## Copyright (c) 1998-2005 Paulo Moura.  All Rights Reserved.
## =================================================================

echo
echo "Creating a script named ciaolgt for running Logtalk with CIAO..."

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

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

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

cd "$LOGTALKHOME"
mkdir -p bin
cd bin
echo ":- ensure_loaded('\$LOGTALKUSER/configs/ciao_aux.config')." > logtalk_ciao.rc
echo ":- ensure_loaded('\$LOGTALKHOME/compiler/logtalk.pl')." >> logtalk_ciao.rc
echo ":- ensure_loaded('\$LOGTALKUSER/libpaths/libpaths.pl')." >> logtalk_ciao.rc
echo ":- op(600, xfy, ::)." >> logtalk_ciao.rc
echo ":- op(600,  fy, ::)." >> logtalk_ciao.rc
echo ":- op(600,  fy, ^^)." >> logtalk_ciao.rc
echo ":- op(200,  fy, +)." >> logtalk_ciao.rc
echo ":- op(200,  fy, ?)." >> logtalk_ciao.rc
echo ":- op(200,  fy, @)." >> logtalk_ciao.rc
echo ":- op(200,  fy, -)." >> logtalk_ciao.rc
echo "#/bin/sh" > ciaolgt
echo "ciaosh -l \$LOGTALKHOME/bin/logtalk_ciao.rc" >> ciaolgt
chmod a+x ciaolgt
ln -sf $LOGTALKHOME/bin/ciaolgt $prefix/bin/ciaolgt
echo "Done. A link to the script was been created in $prefix/bin."
echo "Users should define the environment variables LOGTALKHOME and"
echo "LOGTALKUSER in order to use the script."
echo