1 // Copyright 2010 Google Inc.
2 // All rights reserved.
3 //
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5 // modification, are permitted provided that the following conditions are
6 // met:
7 //
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9 // notice, this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above copyright
11 // notice, this list of conditions and the following disclaimer in the
12 // documentation and/or other materials provided with the distribution.
13 // * Neither the name of Google Inc. nor the names of its contributors
14 // may be used to endorse or promote products derived from this software
15 // without specific prior written permission.
16 //
17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29 #include "utils/process/fdstream.hpp"
30
31 #include "utils/process/systembuf.hpp"
32
33
34 namespace utils {
35 namespace process {
36
37
38 /// Private implementation fields for ifdstream.
39 struct ifdstream::impl {
40 /// The systembuf backing this file descriptor.
41 systembuf _systembuf;
42
43 /// Initializes private implementation data.
44 ///
45 /// \param fd The file descriptor.
implutils::process::ifdstream::impl46 impl(const int fd) : _systembuf(fd) {}
47 };
48
49
50 } // namespace process
51 } // namespace utils
52
53
54 namespace process = utils::process;
55
56
57 /// Constructs a new ifdstream based on an open file descriptor.
58 ///
59 /// This grabs ownership of the file descriptor.
60 ///
61 /// \param fd The file descriptor to read from. Must be open and valid.
ifdstream(const int fd)62 process::ifdstream::ifdstream(const int fd) :
63 std::istream(NULL),
64 _pimpl(new impl(fd))
65 {
66 rdbuf(&_pimpl->_systembuf);
67 }
68
69
70 /// Destroys an ifdstream object.
71 ///
72 /// \post The file descriptor attached to this stream is closed.
~ifdstream(void)73 process::ifdstream::~ifdstream(void)
74 {
75 }
76