/arc.sh

 1#!/bin/sh
 2
 3arc_dir=$(dirname "$(readlink "$0")")
 4
 5if [ "$1" = "--no-rl" ]; then
 6    shift
 7elif [ "$(type rlwrap)" ]; then
 8    rl="rlwrap -C arc"
 9fi
10
11# I wish there were some cleaner way to do this
12case "$(mzscheme --version)" in
13    *v4.*) plt4=yes;;
14    *v5.*) plt4=yes;; # compatible with v4 for the use in this script
15    *) plt4=no;;
16esac
17
18if [ $# -gt 0 ]
19then repl='#f'
20else
21    # It seems like there ought to be a program for determining whether standard
22    # input is a tty, but I can't find one; so we use mzscheme instead.
23    if [ $plt4 = yes ]
24    then repl=$(mzscheme -e '(terminal-port? (current-input-port))')
25    else repl=$(mzscheme -mve '(display (terminal-port? (current-input-port)))')
26    fi
27fi
28
29opts="--no-init-file"
30
31if [ $plt4 = yes ]; then
32    if [ $repl = '#t' ]
33    then
34        # AFAICT, there is no equivalent of --mute-banner for mzscheme v4.
35        # Please do NOT add -r/--script here, this removes the ability to access
36        # the Scheme REPL. See http://arclanguage.org/item?id=10356.
37        opts="$opts --repl --load"
38    else opts="$opts --script"
39    fi
40else
41    if [ $repl = '#t' ]
42    then opts="$opts --mute-banner --load"
43    else opts="$opts --script"
44    fi
45fi
46
47$rl mzscheme $opts $arc_dir/as.scm $@