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Yingdi Yu3168c302015-07-04 16:45:40 -07001/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
Davide Pesaventoa84f4642017-08-23 16:14:51 -04002/*
3 * Copyright (c) 2013-2017 Regents of the University of California.
Yingdi Yu3168c302015-07-04 16:45:40 -07004 *
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#ifndef NDN_CXX_SECURITY_TRANSFORM_STREAM_SOURCE_HPP
23#define NDN_CXX_SECURITY_TRANSFORM_STREAM_SOURCE_HPP
24
25#include "transform-base.hpp"
Yingdi Yu3168c302015-07-04 16:45:40 -070026
27namespace ndn {
28namespace security {
29namespace transform {
30
31/**
32 * @brief A source taking an std::istream as input
33 */
34class StreamSource : public Source
35{
36public:
37 /**
38 * @brief Construst a source using @p is as input.
39 *
40 * @param is The input stream
41 * @param bufLen The internal buffer size. The default size is 1024.
42 * @pre bufLen must be larger than 0.
43 */
44 explicit
45 StreamSource(std::istream& is, size_t bufLen = DEFAULT_BUFFER_LEN);
46
47private:
48 /**
49 * @brief Read bytes from the input stream until EOF is reached and write them into the next module.
50 */
Davide Pesavento57c07df2016-12-11 18:41:45 -050051 void
Yingdi Yu3168c302015-07-04 16:45:40 -070052 doPump() final;
53
54public:
55 static const std::size_t DEFAULT_BUFFER_LEN;
56
57private:
58 std::istream& m_is;
59 size_t m_bufferSize;
60};
61
62typedef StreamSource streamSource;
63
64} // namespace transform
65} // namespace security
66} // namespace ndn
67
68#endif // NDN_CXX_SECURITY_TRANSFORM_STREAM_SOURCE_HPP