839      * @param string $path
844     public function realpath($path)  argument
851             return $path;
856             $this->send_sftp_packet(NET_SFTP_REALPATH, Strings::packSSH2('s', $path));
875         if (!strlen($path) || $path[0] != '/') {
876             $path = $this->pwd . '/' . $path;
879         $path = explode('/', $path);
881         foreach ($path as $dir) {
1262      * @param string $path
1266     private function update_stat_cache($path, $value)  argument
1273         $dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path));
1306      * @param string $path
1310     private function remove_from_stat_cache($path)  argument
1312         $dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path));
1336      * @param string $path
1340     private function query_stat_cache($path)  argument
1342         $dirs = explode('/', preg_replace('#^/|/(?=/)|/$#', '', $path));
1768      * @param string $path
1774     private function setstat_recursive($path, $attr, &$i)  argument
1780         $entries = $this->readlist($path, true);
1783             return $this->setstat($path, $attr, false);
1798             $temp = $path . '/' . $filename;
1821         $packet = Strings::packSSH2('s', $path);
2520      * @param string $path
2526     public function delete($path, $recursive = true)  argument
2532         if (is_object($path)) {
2534             $path = (string) $path;
2537         if (!is_string($path) || $path == '') {
2541         $path = $this->realpath($path);
2542         if ($path === false) {
2547         $this->send_sftp_packet(NET_SFTP_REMOVE, pack('Na*', strlen($path), $path));
2564             $result = $this->delete_recursive($path, $i);
2569         $this->remove_from_stat_cache($path);
2579      * @param string $path
2584     private function delete_recursive($path, &$i)  argument
2590         $entries = $this->readlist($path, true);
2604             $temp = $path . '/' . $filename;
2624         $this->send_sftp_packet(NET_SFTP_RMDIR, Strings::packSSH2('s', $path));
2625         $this->remove_from_stat_cache($path);
2642      * @param string $path
2646     public function file_exists($path)  argument
2653             $path = $this->realpath($path);
2655             $result = $this->query_stat_cache($path);
2663         return $this->stat($path) !== false;
2669      * @param string $path
2673     public function is_dir($path)  argument
2675         $result = $this->get_stat_cache_prop($path, 'type');
2685      * @param string $path
2689     public function is_file($path)  argument
2691         $result = $this->get_stat_cache_prop($path, 'type');
2701      * @param string $path
2705     public function is_link($path)  argument
2707         $result = $this->get_lstat_cache_prop($path, 'type');
2717      * @param string $path
2721     public function is_readable($path)  argument
2727         $packet = Strings::packSSH2('sNN', $this->realpath($path), NET_SFTP_OPEN_READ, 0);
2745      * @param string $path
2749     public function is_writable($path)  argument
2755         $packet = Strings::packSSH2('sNN', $this->realpath($path), NET_SFTP_OPEN_WRITE, 0);
2775      * @param string $path
2779     public function is_writeable($path)  argument
2781         return $this->is_writable($path);
2787      * @param string $path
2791     public function fileatime($path)  argument
2793         return $this->get_stat_cache_prop($path, 'atime');
2799      * @param string $path
2803     public function filemtime($path)  argument
2805         return $this->get_stat_cache_prop($path, 'mtime');
2811      * @param string $path
2815     public function fileperms($path)  argument
2817         return $this->get_stat_cache_prop($path, 'mode');
2823      * @param string $path
2827     public function fileowner($path)  argument
2829         return $this->get_stat_cache_prop($path, 'uid');
2835      * @param string $path
2839     public function filegroup($path)  argument
2841         return $this->get_stat_cache_prop($path, 'gid');
2847      * @param string $path
2851     public function filesize($path)  argument
2853         return $this->get_stat_cache_prop($path, 'size');
2859      * @param string $path
2863     public function filetype($path)  argument
2865         $type = $this->get_stat_cache_prop($path, 'type');
2893      * @param string $path
2898     private function get_stat_cache_prop($path, $prop)  argument
2900         return $this->get_xstat_cache_prop($path, $prop, 'stat');
2908      * @param string $path
2913     private function get_lstat_cache_prop($path, $prop)  argument
2915         return $this->get_xstat_cache_prop($path, $prop, 'lstat');
2923      * @param string $path
2929     private function get_xstat_cache_prop($path, $prop, $type)  argument
2936             $path = $this->realpath($path);
2938             $result = $this->query_stat_cache($path);
2945         $result = $this->$type($path);