#!/bin/bash

IFS=$'\n\t'
set -uo pipefail

# Find the cmd to use for GPG
which gpg2 && PROG=gpg2
if [ $? -ne 0 ]; then
    which gpg && PROG=gpg
fi

set -e

if [ $OPT_IS_FIRST -eq 1 ]; then
    cat "${OPT_SRC}" | ${PROG} -d -r "${OPT_GPG_KEY}" > "${OPT_DST}"
else
    cat "${OPT_SRC}" | ${PROG} -d -r "${OPT_GPG_KEY}" >> "${OPT_DST}"
fi