TQ\Git\Repository\Repository::listDirectory PHP Method

    public function listDirectory($directory = '.', $ref = 'HEAD')
    {
        $directory = FileSystem::normalizeDirectorySeparator($directory);
        $directory = $this->resolveLocalPath(rtrim($directory, '/') . '/');
        $path = $this->getRepositoryPath();
        /** @var $result CallResult */
        $result = $this->getGit()->{'ls-tree'}($path, array('--name-only', '--full-name', '-z', $ref, $directory));
        $result->assertSuccess(sprintf('Cannot list directory "%s" at "%s" from "%s"', $directory, $ref, $this->getRepositoryPath()));
        $output = $result->getStdOut();
        $listing = array_map(function ($f) use($directory) {
            return str_replace($directory, '', trim($f));
        }, explode("", $output));
        return $listing;
    }