77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
// @HEADER
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// ***********************************************************************
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//
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// Teuchos: Common Tools Package
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// Copyright (2006) Sandia Corporation
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//
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// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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// license for use of this work by or on behalf of the U.S. Government.
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
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//
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// ***********************************************************************
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// @HEADER
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#ifndef TEUCHOS_FILESTREAM_H
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#define TEUCHOS_FILESTREAM_H
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//! \file Teuchos_FILEstream.hpp
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#include <streambuf>
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namespace Teuchos
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{
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//! Teuchos::FILEstream: Combined C FILE and C++ stream
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/*! Teuchos::FILEstream is a class that defines an object that is
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simultaneously a C FILE object and a C++ stream object. The
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utility of this class is in connecting existing C++ code that
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uses streams and C code that uses FILEs. An important example
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of this situation is the python wrappers for Trilinos packages.
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Trilinos is of course written primarily in C++, but the python
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wrappers must interface to the python C API. Wrappers for
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Trilinos methods or operators that expect a stream can be given
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a Teuchos::FILEstream, which then behaves as a FILE within the
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python C API. This is a low-level object that should not be
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needed at the user level.
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*/
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class FILEstream : public std::streambuf {
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public:
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//! Constructor
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/*! The only constructor for Teuchos:FILEstream, and it requires a
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pointer to a C FILE struct.
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*/
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FILEstream(std::FILE* file): self_file(file) {}
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protected:
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std::streambuf::int_type overflow(std::streambuf::int_type c) {
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return std::fputc(c, self_file) == EOF?
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std::streambuf::traits_type::eof(): c;
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}
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FILE* self_file;
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};
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}
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#endif
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