1// Copyright 2010 The Kyua Authors.
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28
29#include "utils/process/fdstream.hpp"
30
31#include "utils/noncopyable.hpp"
32#include "utils/process/systembuf.hpp"
33
34
35namespace utils {
36namespace process {
37
38
39/// Private implementation fields for ifdstream.
40struct ifdstream::impl : utils::noncopyable {
41    /// The systembuf backing this file descriptor.
42    systembuf _systembuf;
43
44    /// Initializes private implementation data.
45    ///
46    /// \param fd The file descriptor.
47    impl(const int fd) : _systembuf(fd) {}
48};
49
50
51}  // namespace process
52}  // namespace utils
53
54
55namespace process = utils::process;
56
57
58/// Constructs a new ifdstream based on an open file descriptor.
59///
60/// This grabs ownership of the file descriptor.
61///
62/// \param fd The file descriptor to read from.  Must be open and valid.
63process::ifdstream::ifdstream(const int fd) :
64    std::istream(NULL),
65    _pimpl(new impl(fd))
66{
67    rdbuf(&_pimpl->_systembuf);
68}
69
70
71/// Destroys an ifdstream object.
72///
73/// \post The file descriptor attached to this stream is closed.
74process::ifdstream::~ifdstream(void)
75{
76}
77