1// Copyright 2010 Google Inc. 2// All rights reserved. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions are 6// met: 7// 8// * Redistributions of source code must retain the above copyright 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 19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 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 34namespace utils { 35namespace process { 36 37 38/// Private implementation fields for ifdstream. 39struct 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 54namespace 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. 62process::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. 73process::ifdstream::~ifdstream(void) 74{ 75} 76