#!/bin/bash
set -e

SCRIPT_NAME=$(basename "$(realpath "$0")")
DB_PATH="/data/data/com.termux/files/usr/share/whatprovides/db"

show_usage () {
	echo
	echo "Usage: $SCRIPT_NAME [options] path/to/file"
	echo
	echo "Find out packages using specific files."
	echo
	echo "Options:"
	echo
	echo "  -h            Show this help."
	echo "  -p [package]  List files of package."
	echo
}

while getopts :hp:f: option; do
	case "$option" in
		p) cat "${DB_PATH}/${OPTARG}"; exit 0;;
		?|h) show_usage; exit 0;;
		*) show_usage; exit 1;;
	esac
done

if [ $# -ge 1 ]; then
	grep -rwhP "$(realpath "$1")\$" "$DB_PATH" | sort
else
	show_usage
	exit 1
fi