#!/usr/bin/env bash

set -e

if [[ -z "$1" || "$1" == "--help" || "$1" == "-h" ]]; then
    cat <<EOF
Usage: $(basename $0) [ prog ]

Searches recursively for 'bin/prog' executable from current directory and
parent directories, and executes it if successfully found.
EOF
    exit
fi

prog="$1"
shift
rootdir="$(pwd)"
while [[ "$rootdir" != "" && ! -x "$rootdir/bin/$prog" ]]; do
    rootdir=${rootdir%/*}
done

if [[ ! -x "$rootdir/bin/$prog" ]]; then
    echo "No executable found in bin of parent directories."
    exit 1
fi

"$rootdir/bin/$prog" "$@"