#!/usr/bin/env bash

# Snaps a screenshot of a QR code and decodes it.
#
# Requires: zbar, maim (on linux)

set -e
unset CDPATH
TMP=$(mktemp _qrXXX)
case $OSTYPE in
  darwin*) screencapture -i -x -t png "$TMP" ;;
  linux*)  maim -s "$TMP" ;;
  *) >&2 echo "Help!"; exit 1 ;;
esac
(( $? == 0 )) && zbarimg -q --raw "$TMP"
rm -f "$TMP"