NS-3 based Named Data Networking (NDN) simulator
ndnSIM: NDN, CCN, CCNx, content centric networks
API Documentation
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Groups Pages
udata.cc
1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
2 /*
3  * Copyright (c) 2011 University of California, Los Angeles
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation;
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17  *
18  * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
19  */
20 
21 #include "udata.h"
22 
23 NDN_NAMESPACE_BEGIN
24 
25 namespace wire {
26 namespace CcnbParser {
27 
28 Udata::Udata (Buffer::Iterator &start, uint32_t length)
29 {
30  // Ideally, the code should look like this. Unfortunately, we don't have normal compatible iterators
31  // Buffer::Iterator realStart = start;
32  // start.Next (length); // advancing forward
33  // m_udata.assign (realStart, start/*actually, it is the end*/);
34 
35  m_udata.reserve (length+1); //just in case we will need \0 at the end later
36  // this is actually the way Read method is implemented in network/src/buffer.cc
37  uint32_t i = 0;
38  for (; !start.IsEnd () && i < length; i++)
39  {
40  m_udata.push_back (start.ReadU8 ());
41  }
42 
43  if (i < length && start.IsEnd ())
44  throw CcnbDecodingException ();
45 }
46 
47 } // namespace CcnbParser
48 } // namespace wire
49 
50 NDN_NAMESPACE_END
Exception thrown if there is a parsing error.
Definition: common.h:50