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

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// Copyright 2010 Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of Google Inc. nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "utils/process/fdstream.hpp"
#include "utils/process/systembuf.hpp"
namespace utils {
namespace process {
/// Private implementation fields for ifdstream.
struct ifdstream::impl {
/// The systembuf backing this file descriptor.
systembuf _systembuf;
/// Initializes private implementation data.
///
/// \param fd The file descriptor.
impl(const int fd) : _systembuf(fd) {}
};
} // namespace process
} // namespace utils
namespace process = utils::process;
/// Constructs a new ifdstream based on an open file descriptor.
///
/// This grabs ownership of the file descriptor.
///
/// \param fd The file descriptor to read from. Must be open and valid.
process::ifdstream::ifdstream(const int fd) :
std::istream(NULL),
_pimpl(new impl(fd))
{
rdbuf(&_pimpl->_systembuf);
}
/// Destroys an ifdstream object.
///
/// \post The file descriptor attached to this stream is closed.
process::ifdstream::~ifdstream(void)
{
}