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/******************************************************************************
* $Id$
*
* Project: libLAS - http://liblas.org - A BSD library for LAS format data.
* Purpose: Stream wrapper for FILE pointer.
* Author: Mateusz Loskot <mateusz@loskot.net>
*
******************************************************************************
* Copyright (c) 2010, Mateusz Loskot
*
* 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 the Martin Isenburg or Iowa Department
* of Natural Resources 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.
****************************************************************************/
#ifndef LIBLAS_DETAIL_FILE_PTR_STREAM_HPP_INCLUDED
#define LIBLAS_DETAIL_FILE_PTR_STREAM_HPP_INCLUDED
#include <cstdio>
#include <istream>
#include <ostream>
#include <streambuf>
namespace liblas { namespace detail {
class file_ptr_streambuf : public std::streambuf
{
public:
file_ptr_streambuf(FILE* fp) : std::streambuf() , fp(fp) {}
protected:
virtual int overflow(int c)
{
return EOF != c ? std::fputc(c, fp) : EOF;
}
virtual int underflow()
{
int const c = std::getc(fp);
if (c != EOF)
{
std::ungetc(c, fp);
}
return c;
}
virtual int uflow()
{
return std::getc(fp);
}
virtual int pbackfail(int c)
{
return EOF != c ? std::ungetc(c, fp) : EOF;
}
virtual int sync()
{
return std::fflush(fp);
}
private:
FILE* fp;
};
#pragma warning(push)
#pragma warning(disable: 4355)
class file_ptr_istream : private file_ptr_streambuf, public std::istream
{
public:
explicit file_ptr_istream(FILE* fp) : file_ptr_streambuf(fp), std::istream(this) {}
};
class file_ptr_ostream : private file_ptr_streambuf, public std::ostream
{
public:
explicit file_ptr_ostream(FILE* fp) : file_ptr_streambuf(fp), std::ostream(this) {}
};
#pragma warning(pop)
}} //namespace liblas::detail
#endif // LIBLAS_DETAIL_FILE_PTR_STREAM_HPP_INCLUDED
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