#!/bin/sh
#

cmd=$0
usage="Usage: $cmd"

tmpf=${TMPDIR:-/tmp}/a2urls$$
trap 'rm -f "$tmpf"' 0
trap 'rm -f "$tmpf"; exit 1' 1 2 13 15

cat >"$tmpf" || exit 1
type=`file2mime "$tmpf"` || exit 1
case "$type" in
    text/html)	urls <"$tmpf" ;;
    *)		grepall -o http: https: ftp: file: <"$tmpf" | tr -s ' \011\015' '\012' | cleanurllist ;;
esac