mirror of https://github.com/BOINC/boinc.git
36 lines
1.1 KiB
PHP
36 lines
1.1 KiB
PHP
<?php
|
|
/**
|
|
* The BString class represents BEncoded strings for the serverside Bittorrent system.
|
|
* A BEncoded string always starts with the length, then a ":" and then the actual data.
|
|
* Strings are native in PHP.
|
|
*/
|
|
|
|
$cvs_version_tracker[]="\$Id$"; //Generated automatically - do not edit
|
|
|
|
class BString {
|
|
private function __construct(){
|
|
}
|
|
|
|
/**
|
|
* Returns the ordinary string decoded from $str
|
|
* @throws an IllegalArgumentException in the case
|
|
* that the string is malformed (ie. has more/less chars than specified
|
|
* or does not correctly define a BEncoded string)
|
|
*/
|
|
public static function toString($str){
|
|
list($length, $data) = explode(":", $str);
|
|
if (!is_numeric($length)) throw new IllegalArgumentException("BEncoded string has non-numeric length specification.");
|
|
if ($length != strlen($data)) throw new IllegalArgumentException("BEncoded string length does not match actual length of string.");
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Returns a BEncoded string
|
|
*/
|
|
public static function toEncoded($str){
|
|
return strlen($str).":".$str;
|
|
}
|
|
}
|
|
|
|
|
|
?>
|