buffer-source.cpp
Go to the documentation of this file.
1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2013-2017 Regents of the University of California.
4  *
5  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
6  *
7  * ndn-cxx library is free software: you can redistribute it and/or modify it under the
8  * terms of the GNU Lesser General Public License as published by the Free Software
9  * Foundation, either version 3 of the License, or (at your option) any later version.
10  *
11  * ndn-cxx library is distributed in the hope that it will be useful, but WITHOUT ANY
12  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
13  * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
14  *
15  * You should have received copies of the GNU General Public License and GNU Lesser
16  * General Public License along with ndn-cxx, e.g., in COPYING.md file. If not, see
17  * <http://www.gnu.org/licenses/>.
18  *
19  * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
20  */
21 
22 #include "buffer-source.hpp"
23 
24 namespace ndn {
25 namespace security {
26 namespace transform {
27 
28 BufferSource::BufferSource(const uint8_t* buf, size_t size)
29  : m_buf(buf)
30  , m_size(size)
31 {
32 }
33 
34 BufferSource::BufferSource(const std::string& string)
35  : m_buf(reinterpret_cast<const uint8_t*>(string.data()))
36  , m_size(string.size())
37 {
38 }
39 
41  : m_buf(buffer.data())
42  , m_size(buffer.size())
43 {
44 }
45 
46 void
47 BufferSource::doPump()
48 {
49  BOOST_ASSERT(m_next != nullptr);
50 
51  const uint8_t* buf = m_buf;
52  size_t size = m_size;
53 
54  while (0 < size) {
55  size_t nBytesWritten = m_next->write(buf, size);
56  buf += nBytesWritten;
57  size -= nBytesWritten;
58  }
59 
60  m_next->end();
61 }
62 
63 } // namespace transform
64 } // namespace security
65 } // namespace ndn
Copyright (c) 2013-2017 Regents of the University of California.
Definition: common.hpp:66
unique_ptr< Downstream > m_next
BufferSource(const uint8_t *buf, size_t size)
Take a buffer buf with size of size as input.
General-purpose automatically managed/resized buffer.
Definition: buffer.hpp:40