<?php
/* $Id$ */
namespace Mammut\IO;

(defined('MAMMUT') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

use Mammut\Exception\IllegalStateException;

/**
 * Temp file io class
 *
 * Temp files will be removed on end of script
 *
 * @since 1.1.0.0
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package Mammut\IO
 */
class TempFile extends File {
	const _VERSION_ = '0.5.0.0';

	/**
	 * Create a new temp file object
	 *
	 * @param string $path
	 *        	(optional) a created file that should be used as a "temp file"
	 */
	public function __construct($path = false, $prefix = 'TMP') {
		$this->path = $path ? $path : self::genTempfileName($prefix);
		if($this->isDir())
			throw new IllegalStateException('dir');
		$this->readonly = false;
		register_shutdown_function([$this,'kill']);
		if(!$this->exists())
			$this->create();
		$this->open();
	}
	
	public static function genTempfileName($prefix = '') {
		return tempnam(sys_get_temp_dir(), $prefix);
	}

	/**
	 * Kills the temp file
	 *
	 * @throws IllegalStateException if file is a directory
	 */
	public function kill() {
		if($this->isDir())
			throw new IllegalStateException('dir');
		if($this->isOpen())
			$this->close();
		$this->delete();
	}
}