<?

	class Spelserver_Directory implements Iterator {

		private $_dir;
		private $_workingDir = '';
		private $_dirName = '';
		private $_tmpFile = null;
		private $_ignoreFiles = array();

		public function __construct($dir = '', $ignore = array(), $workingDir = '') {
			if (is_string($dir) && !empty($dir))
				$this->_openDir($dir, $workingDir);

			if (is_array($ignore))
				$this->setIgnore($ignore);
		}

		public function __destruct() {
			$this->_closeDir();
		}

		public function __toString() {
			return $this->_dirName;
		}

		public function setIgnore($ignore) {
			if (!is_array($ignore))
				throw new Spelserver_Directory_Exception('Ignored files have to be an array');

			$this->_ignoreFiles = $ignore;
		}

		public function getIgnore() {
			return $this->_ignoreFiles;
		}

		public function getCwd() {
			return $this->_workingDir;
		}

		private function _openDir($dir, $workingDir) {
			if (!empty($workingDir))
				$path = "$workingDir/$dir";
			else
				$path = $dir;

			$this->_workingDir = $path;

			if (($this->_dir = @opendir($path)) === false) {
				require_once 'Spelserver/Directory/Exception.php';
				throw new Spelserver_Directory_Exception('Couldn\'t read directory "' . $path . '"');
			}

			$this->_dirName = $dir;
		}

		private function _closeDir() {
			if (is_resource($this->_dir))
				closedir($this->_dir);
		}

		public function rewind() {
			if (is_resource($this->_dir))
				rewinddir($this->_dir);
		}

		public function current() {
			return (is_null($this->_tmpFile) ? $this->next() : $this->_tmpFile);
		}

		public function key() {
			return 0;
		}

		public function next() {
			$this->_tmpFile = readdir($this->_dir);

			if (in_array($this->_tmpFile, $this->_ignoreFiles))
				$this->_tmpFile = $this->next();

			if (	$this->_tmpFile !== false &&
						is_dir($this->_workingDir . '/' . $this->_tmpFile) &&
						($this->_tmpFile != '.' && $this->_tmpFile != '..')) {

				return new Spelserver_Directory($this->_tmpFile, $this->_ignoreFiles, $this->_workingDir);
			} else {
				return $this->_tmpFile;
			}
		}

		public function valid() {
			if (!is_resource($this->_dir))
				return false;
			elseif ($this->_tmpFile === false)
				return false;

			return true;
		}

	}

?>