#!/bin/sh
test -z "$1" && { echo "Usage: js 'somefunction(1)'"; exit 0; }

test -n "$BROWSER" || { alert warning "/dev/browser not active (are you running outside of v86?)"; }
javascript="$*"

# if we are run as shebang, use the file as input
case "$1" in 
  */*) javascript="args = String('$*').split(' '); $(cat $1 | tail +2)"
       ;;
esac

echo -n "$javascript" > /dev/browser/js

# should we use flock, an awesome way to make processes read/write the same file
# while preventing 1001 concurrency issues?
# attempt:
#
# flock /dev/browser/js -c "echo \"$javascript\" > /dev/browser/js"