#! /bin/sh

# -*- coding: utf-8 -*-
# --------------------------------------------------------------------
# Copyright 2010-2016 Manolis Papadakis <manopapad@gmail.com>,
#                     Eirini Arvaniti <eirinibob@gmail.com>
#                 and Kostis Sagonas <kostis@cs.ntua.gr>
#
# This file is part of PropEr.
#
# PropEr is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# PropEr is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with PropEr.  If not, see <http://www.gnu.org/licenses/>.


usage()
{
    echo "usage: $0 [--use-sfmt | --help]"
    exit 1
}

sfmt()
{
    echo "Using the sfmt-erlang random module"
    grep -q sfmt rebar.config || cat >> rebar.config <<DONE
{deps, [
    {sfmt, ".*", {git, "https://github.com/jj1bdx/sfmt-erlang.git",
                  {branch, "master"}}}
    ]}.
DONE
    grep -q USE_SFMT rebar.config || \
        sed -i "s/debug_info/debug_info, {d, 'USE_SFMT'}/" rebar.config
    grep -q sfmt src/proper.app.src || \
        sed -i 's/stdlib/stdlib,sfmt/' src/proper.app.src
}

random()
{
    echo "Using Erlang's 'random' ('rand' in 19.0 and later) module"
    grep -q USE_SFMT rebar.config && \
        sed -i "s/debug_info, {d, 'USE_SFMT'}/debug_info/" rebar.config
    grep -q sfmt rebar.config && sed -i '/^{deps/,$d' rebar.config
    grep -q sfmt src/proper.app.src && \
        sed -i 's/stdlib,sfmt/stdlib/' src/proper.app.src
}

cleanup()
{
    rm -f ebin/* deps/*/ebin/*
    rm -f .eunit/*
}

if [ $# -eq 0 ]; then
    cleanup
    random
else
    case $1 in
	--use-sfmt)
            cleanup
            sfmt
            ;;
	-h|--help)
            usage
            ;;
	*)
            echo $0": unrecognized option:" $1
            exit 1
	    ;;
    esac
fi
