<?php
if (!defined("ROOT_PATH"))
{
	header("HTTP/1.1 403 Forbidden");
	exit;
}

class pjUtil extends pjToolkit
{
	static public function uuid()
	{
		return chr(rand(65,90)) . chr(rand(65,90)) . time();
	}
	
	static public function getReferer()
	{
		if (isset($_GET['_escaped_fragment_']))
		{
			if (isset($_SERVER['REDIRECT_URL']))
			{
				return $_SERVER['REDIRECT_URL'];
			}
		}
	
		if (isset($_SERVER['HTTP_REFERER']))
		{
			$pos = strpos($_SERVER['HTTP_REFERER'], "#");
			if ($pos !== FALSE)
			{
				return substr($_SERVER['HTTP_REFERER'], 0, $pos);
			}
			return $_SERVER['HTTP_REFERER'];
		}
	}
	
	static public function getClientIp()
	{
		if (isset($_SERVER['HTTP_CLIENT_IP']))
		{
			return $_SERVER['HTTP_CLIENT_IP'];
		} else if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
			return $_SERVER['HTTP_X_FORWARDED_FOR'];
		} else if(isset($_SERVER['HTTP_X_FORWARDED'])) {
			return $_SERVER['HTTP_X_FORWARDED'];
		} else if(isset($_SERVER['HTTP_FORWARDED_FOR'])) {
			return $_SERVER['HTTP_FORWARDED_FOR'];
		} else if(isset($_SERVER['HTTP_FORWARDED'])) {
			return $_SERVER['HTTP_FORWARDED'];
		} else if(isset($_SERVER['REMOTE_ADDR'])) {
			return $_SERVER['REMOTE_ADDR'];
		}
	
		return 'UNKNOWN';
	}
	
	static public function textToHtml($content)
	{
		$content = preg_replace('/\r\n|\n/', '<br />', $content);
		return '<html><head><title></title></head><body>'.$content.'</body></html>';
	}
	
	static public function html2txt($document)
	{
		$search = array('@<script[^>]*?>.*?</script>@si',
				'@<[\/\!]*?[^<>]*?>@si',
				'@<style[^>]*?>.*?</style>@siU',
				'@<![\s\S]*?--[ \t\n\r]*>@'
		);
		$text = preg_replace($search, '', $document);
		return $text;
	}
	
	static public function truncateDescription($string, $limit, $break=".", $pad="..."){
		if(strlen($string) <= $limit)
			return $string;
		if(false !== ($breakpoint = strpos($string, $break, $limit)))
		{
			if($breakpoint < strlen($string) - 1)
			{
				$string = substr($string, 0, $breakpoint) . $pad;
			}
		}
		return $string;
	}
}
?>