#!/bin/bash

file_to_search=""

function usage
{
	retval="$1"
	case "$retval" in
		0)
			;;
		*)
			exec 1>&2
			;;
	esac
	echo "Usage: $0 --file md5sum --help"
	exit "$retval"
}

while [ "$#" -ge 1 ]
do
	case "$1" in
		--file)
			file_to_search="$2"
			shift
			;;
		--help|-h)
			usage 0
			;;
		*)
			echo "$0: unrecognized option: $1" 1>&2
			usage 1
			;;
	esac
	shift
done

case "$file_to_search" in
	"")
		echo "$0: --file is a required option" 1>&2
		exit 1
		;;
	*/*)
		echo "$0: Please specify the file to search for without any slashes" 1>&2
		exit 1
		;;
esac

for package in $(brew list)
do
	if brew ls "$package" | grep -E -q "\\<$file_to_search\$"
	then
		echo "$package"
		break
	fi
done