Gittern\Transport\RawObject::getLength PHP Method

    public function getLength()
    {
        return strlen($this->data);
    }

 /**
  * @see http://git.rsbx.net/Documents/Git_Data_Formats.txt
  * @see http://www.opensource.apple.com/source/Git/Git-17/src/git-htmldocs/technical/pack-format.txt
  **/
 public function getRawObjectAtOffset($offset)
 {
     $this->reader->setOffset($offset);
     $header_part = $this->reader->readUInt8();
     $type = $header_part >> 4 & 0x7;
     $size = $header_part & 0xf;
     for ($size_shift_offset = 4; $header_part & 0x80; $size_shift_offset += 7) {
         $header_part = $this->reader->readUInt8();
         $size |= ($header_part & 0x7f) << $size_shift_offset;
     }
     if ($type == self::OBJ_REF_DELTA) {
         $sha = $this->reader->readHHex(20);
         $delta = gzuncompress($this->reader->read($size + 512), $size);
         $base_object = $this->getRawObjectForSha($sha);
         $type = $base_object->getType();
         if (strlen($delta) != $size) {
             throw new InvalidPackfileException(sprintf("Unexpected delta length, expected %d, was %d", $size, strlen($delta)));
         }
         $data = $this->patchDelta($delta, $base_object);
         $raw_object = new RawObject($type, $data);
     } else {
         if ($type == self::OBJ_OFS_DELTA) {
             $base_offset_part = $this->reader->readUInt8();
             $base_offset = $base_offset_part & 0x7f;
             while ($base_offset_part & 0x80) {
                 $base_offset_part = $this->reader->readUInt8();
                 $base_offset += 1;
                 $base_offset = $base_offset << 7;
                 $base_offset |= $base_offset_part & 0x7f;
             }
             $base_offset = $offset - $base_offset;
             $delta = gzuncompress($this->reader->read($size + 512), $size);
             if (strlen($delta) != $size) {
                 throw new InvalidPackfileException(sprintf("Unexpected delta length, expected %d, was %d", $size, strlen($delta)));
             }
             $base_object = $this->getRawObjectAtOffset($base_offset);
             $type = $base_object->getType();
             $data = $this->patchDelta($delta, $base_object);
             $raw_object = new RawObject($type, $data);
         } else {
             $data = gzuncompress($this->reader->read($size + 512), $size);
             $raw_object = new RawObject($type, $data);
             if ($raw_object->getLength() != $size) {
                 throw new InvalidPackfileException(sprintf("Unexpected RawObject length, expected %d, was %d", $size, $raw_object->getLength()));
             }
         }
     }
     return $raw_object;
 }