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Diffstat (limited to 'utils/process/fdstream.cpp')
-rw-r--r-- | utils/process/fdstream.cpp | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/utils/process/fdstream.cpp b/utils/process/fdstream.cpp new file mode 100644 index 000000000000..ccd7a1f91b0c --- /dev/null +++ b/utils/process/fdstream.cpp @@ -0,0 +1,76 @@ +// Copyright 2010 The Kyua Authors. +// 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/noncopyable.hpp" +#include "utils/process/systembuf.hpp" + + +namespace utils { +namespace process { + + +/// Private implementation fields for ifdstream. +struct ifdstream::impl : utils::noncopyable { + /// 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) +{ +} |