external/bsd/kyua-cli/dist/utils/process/fdstream.cpp

   1 // Copyright 2010 Google Inc.
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  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.
  46     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.
  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.
  73 process::ifdstream::~ifdstream(void)
  74 {
  75 }