Added version trackers and the BString class for BEncoded strings.

svn path=/trunk/boinc/; revision=12709

html/bt/inc/binteger.php

@@ -4,6 +4,9 @@
  * Bittorrent features.
  * An integer starts with "i", has the value and then ends with "e".
  */
+ 
+$cvs_version_tracker[]="\$Id: belement.inc 12611 2007-05-08 08:25:13Z jbk $";  //Generated automatically - do not edit
+ 
 class BInteger {
     private function __construct(){
     }

html/bt/inc/blist.php

@@ -4,6 +4,9 @@
  * It implements a BEncoded list - which always starts with l and ends with e.
  * In PHP lists are simply non-keyed (ie. standard keyed) arrays.
  */
+ 
+$cvs_version_tracker[]="\$Id: belement.inc 12611 2007-05-08 08:25:13Z jbk $";  //Generated automatically - do not edit
+ 
 class BList {
     private function __construct(){
     }

html/bt/inc/bstring.php

@@ -0,0 +1,36 @@
+<?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: belement.inc 12611 2007-05-08 08:25:13Z jbk $";  //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;
+    }    
+}
+
+
+?>