ZP-150 #comment added streampad to stringstreamwrapper #time 5m

git-svn-id: https://z-push.org/svn/z-push/trunk@1386 b7dd7b3b-3a3c-0410-9da9-bee62a6cc5b5

src/include/stringstreamwrapper.php

@@ -48,6 +48,7 @@ class StringStreamWrapper {
     private $stringstream;
     private $position;
     private $stringlength;
+    private $streampad = 0; // pad stream with 0 string for stream converter (streamlength must be multiple of 4)
 
     /**
      * Opens the stream
@@ -73,6 +74,11 @@ class StringStreamWrapper {
         $this->stringstream = $contextOptions[self::PROTOCOL]['string'];
 
         $this->stringlength = strlen($this->stringstream);
+
+        // pad the stream to the multiple of 4
+        if ($this->stringlength % 4 != 0 )
+            $this->streampad = $this->stringlength + 4 - ($this->stringlength % 4);
+
         ZLog::Write(LOGLEVEL_DEBUG, sprintf("StringStreamWrapper::stream_open(): initialized stream length: %d", $this->stringlength));
 
         return true;
@@ -89,6 +95,8 @@ class StringStreamWrapper {
     public function stream_read($len) {
         $data = substr($this->stringstream, $this->position, $len);
         $this->position += strlen($data);
+        if ($this->position == $this->stringlength && $this->streampad != 0 )
+            $data = str_pad($data, $this->streampad, 0x0);
         return $data;
     }