public static function search($regex, array $options = array()) {
		$default = array('channel' => null);
		$options += $default;

		$path = static::path($options['channel']);

		$dates = array_values(array_filter(scandir($path), function ($file) {
			return $file[0] != '.';
		}));
		$results = array();

		foreach ($dates as $i => $date) {
			$data = static::read($options['channel'], $date);

			foreach ($data as $item) {
				$match  = preg_match("#{$regex}#", $item['user']);
				$match |= preg_match("#{$regex}#", $item['message'], $matches);

				if (!$match) {
					continue;
				}
				$results[] = $item + compact('date', 'matches');
			}
		}
		return $results;
	}