1 // Copyright 2010 The Kyua Authors. 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/noncopyable.hpp" 32 #include "utils/process/systembuf.hpp" 33 34 35 namespace utils { 36 namespace process { 37 38 39 /// Private implementation fields for ifdstream. 40 struct 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 55 namespace 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. 63 process::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. 74 process::ifdstream::~ifdstream(void) 75 { 76 } 77