<?php
/**
* DB version manager
*
* Copyright (c) 2011 Przemek Berezowski (hide@address.com)
* All rights reserved.
*
*
* @category	  	 Library
* @package  	 DBVersionManager
* @copyright     Copyright (c) 2011 Przemek Berezowski (hide@address.com)
* @version       0.9
* @license       New BSD License
*/

/**
 * Class Tools
 * 
 * @author pberezowski
 *
 */
class Tools {
	
	/**
	 * 
	 * Reads the file as XML
	 * @param string $path
	 * @return SimpleXMLElement
	 */
	public static function readXml($path) {
		$oXml = simplexml_load_file($path);
		
		if ($oXml instanceof SimpleXMLElement) {
			return $oXml;
		} 
		Throw new UpdaterException('Could not load xml file from:'.$path);
	}
	
	/**
	 * 
	 * Returns current execution script path
	 */
	public static function getProjectPath() {
		$path = dirname($_SERVER['SCRIPT_FILENAME']);
		return $path;
	}
	
	/**
	 * Read the list of files in given directory
	 * @param string $path
	 * @return array
	 * @throws UpdaterException
	 */
	public static function readDir($path) {
		
		$oDir = dir($path);
		if (!oDir) {
			Throw new UpdaterException('Could not read directory: '.$path);
		}
		$paths = array();

		while (false !== ($filename = $oDir->read())){
			
			if (is_file($path . '/' . $filename)){
				$paths[] = $filename;
			}
		}
		return $paths;
	}
	
	/**
	 * Prints given variable
	 * @param mixed $what
	 */
	public static function dump($what) {
		echo "<pre>";
		print_r($what);
		echo "</pre>";
	}
	
	
}