Airship\Hangar\Commands\Add::addFile PHP Method

    protected function addFile(string $filename, string $dir = '') : int
    {
        if (!empty($dir)) {
            if ($dir[\strlen($dir) - 1] !== DIRECTORY_SEPARATOR) {
                $dir .= DIRECTORY_SEPARATOR;
            }
        }
        if (!\file_exists($filename)) {
            echo $this->c['red'], 'File not found: ', $this->c[''], $filename, "\n";
            return 0;
        }
        try {
            $path = $this->getRealPath(\realpath($dir . $filename));
        } catch (\Error $e) {
            echo $this->c['red'], $e->getMessage(), $this->c[''], "\n";
            return 0;
        }
        if (\in_array($path, $this->session['add'])) {
            echo $this->c['yellow'], 'File already added: ', $this->c[''], $path, "\n";
            return 0;
        }
        // Recursive adding
        if (\is_dir($path)) {
            $i = 0;
            $glob = \glob($path . DIRECTORY_SEPARATOR . '*');
            foreach ($glob as $f) {
                $i += $this->addFile($f, $path);
            }
            return $i;
        }
        $this->session['add'][] = $path;
        echo $this->c['green'], 'File added: ', $this->c[''], $path, "\n";
        return 1;
    }