71 lines
3.0 KiB
C++
71 lines
3.0 KiB
C++
// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
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// (C) Copyright 2003-2007 Jonathan Turkanis
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
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// See http://www.boost.org/libs/iostreams for documentation.
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#ifndef BOOST_IOSTREAMS_FILTERING_STREAMBUF_HPP_INCLUDED
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#define BOOST_IOSTREAMS_FILTERING_STREAMBUF_HPP_INCLUDED
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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#include <exception>
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#include <memory> // allocator.
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#include <boost/iostreams/chain.hpp>
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#include <boost/iostreams/detail/access_control.hpp>
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#include <boost/iostreams/detail/char_traits.hpp>
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#include <boost/iostreams/detail/push.hpp>
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#include <boost/iostreams/detail/streambuf.hpp> // pubsync.
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#include <boost/iostreams/detail/streambuf/chainbuf.hpp>
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#include <boost/mpl/if.hpp>
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namespace boost { namespace iostreams {
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//
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// Macro: BOOST_IOSTREAMS_DEFINE_FILTERBUF(name_, chain_type_, default_char_)
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// Description: Defines a template derived from std::basic_streambuf which uses
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// a chain to perform i/o. The template has the following parameters:
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// Ch - The character type.
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// Tr - The character traits type.
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// Alloc - The allocator type.
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// Access - Indicates accessibility of the chain interface; must be either
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// public_ or protected_; defaults to public_.
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//
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#define BOOST_IOSTREAMS_DEFINE_FILTER_STREAMBUF(name_, chain_type_, default_char_) \
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template< typename Mode, \
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typename Ch = default_char_, \
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typename Tr = BOOST_IOSTREAMS_CHAR_TRAITS(Ch), \
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typename Alloc = std::allocator<Ch>, \
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typename Access = public_ > \
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class name_ : public boost::iostreams::detail::chainbuf< \
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chain_type_<Mode, Ch, Tr, Alloc>, Mode, Access \
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> \
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{ \
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public: \
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typedef Ch char_type; \
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struct category \
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: Mode, closable_tag, streambuf_tag \
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{ }; \
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BOOST_IOSTREAMS_STREAMBUF_TYPEDEFS(Tr) \
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typedef Mode mode; \
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typedef chain_type_<Mode, Ch, Tr, Alloc> chain_type; \
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name_() { } \
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BOOST_IOSTREAMS_DEFINE_PUSH_CONSTRUCTOR(name_, mode, Ch, push_impl) \
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~name_() { if (this->is_complete()) this->BOOST_IOSTREAMS_PUBSYNC(); } \
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}; \
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/**/
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BOOST_IOSTREAMS_DEFINE_FILTER_STREAMBUF(filtering_streambuf, boost::iostreams::chain, char)
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BOOST_IOSTREAMS_DEFINE_FILTER_STREAMBUF(filtering_wstreambuf, boost::iostreams::chain, wchar_t)
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typedef filtering_streambuf<input> filtering_istreambuf;
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typedef filtering_streambuf<output> filtering_ostreambuf;
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typedef filtering_wstreambuf<input> filtering_wistreambuf;
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typedef filtering_wstreambuf<output> filtering_wostreambuf;
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} } // End namespaces iostreams, boost.
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#endif // #ifndef BOOST_IOSTREAMS_FILTERING_STREAMBUF_HPP_INCLUDED
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