<?php
/**
 * File utility library
 *
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package Mammut\IO
 */

/* $Id$ */
(defined('MAMMUT') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

/**
 * Extended file_exists.
 *
 * This function works exactly like native file_exists(), but takes the include path into
 * account
 *
 * @see file_exists()
 * @since 1.0.0
 * @param string $filename
 *        	to the file or directory.
 * @return boolean true if file or directory exists, false otherwise
 */
function include_exists($filename) {
	if(@file_exists($filename))
		return true;
	
	$incpath = explode(PATH_SEPARATOR, get_include_path());
	$allowedPath = ini_get('open_basedir');
	if(!empty($allowedPath))
		$allowedPath = explode(PATH_SEPARATOR, $allowedPath);
	if(!empty($allowedPath)) {
		// remove not allowed paths from include path
		foreach($incpath as $key=>$path) {
			if($path[0] == '.' || $path[0] != DIRECTORY_SEPARATOR)
				continue;
			$found = false;
			foreach($allowedPath as $basedir) {
				if(strpos($path, $basedir) === 0)
					$found = true;
			}
			if(!$found)
				unset($incpath[$key]);
		}
	}
	foreach($incpath as $path) {
		if(file_exists($path . DIRECTORY_SEPARATOR . $filename))
			return true;
	}
	return false;
}

/**
 * Runs a scriptfile and returns the output.
 * Only a specific set of variables is avaible in the script. THIS IS NOT FOR SECURITY,
 * only to prevent coding errors (global $var is still possible)
 *
 * @param string $filename
 *        	the script to run
 * @param array $localvars
 *        	a list of local variables
 */
function get_script_output($filename, array $localvars = array()) {
	if(count($localvars) > 0)
		extract($localvars);
	unset($localvars);
	ob_start();
	include ($filename);
	return ob_get_clean();
}

/**
 * Recrusively deletes a directory.
 *
 * @param string $path
 *        	the directory to delete
 */
function rmdir_deep($path) {
	if($handle = opendir($path)) {
		while(false !== ($file = readdir($handle))) {
			if(!in_array($file, array('.','..'))) {
				if(is_file($path . DIRECTORY_SEPARATOR . $file))
					@unlink($path . DIRECTORY_SEPARATOR . $file);
				if(is_dir($path . DIRECTORY_SEPARATOR . $file)) {
					rmdir_deep($path . DIRECTORY_SEPARATOR . $file);
					@rmdir($path . DIRECTORY_SEPARATOR . $file);
				}
			}
		}
	}
}