1 | // (C) Copyright Jonathan Turkanis 2003.
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2 | // Distributed under the Boost Software License, Version 1.0. (See accompanying
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3 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
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4 |
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5 | // See http://www.boost.org/libs/iostreams for documentation.
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6 |
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7 | #ifndef BOOST_IOSTREAMS_FILTERING_STREAMBUF_HPP_INCLUDED
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8 | #define BOOST_IOSTREAMS_FILTERING_STREAMBUF_HPP_INCLUDED
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9 |
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10 | #if defined(_MSC_VER) && (_MSC_VER >= 1020)
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11 | # pragma once
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12 | #endif
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13 |
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14 | #include <exception>
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15 | #include <memory> // allocator.
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16 | #include <boost/iostreams/chain.hpp>
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17 | #include <boost/iostreams/detail/access_control.hpp>
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18 | #include <boost/iostreams/detail/char_traits.hpp>
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19 | #include <boost/iostreams/detail/push.hpp>
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20 | #include <boost/iostreams/detail/streambuf.hpp> // pubsync.
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21 | #include <boost/iostreams/detail/streambuf/chainbuf.hpp>
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22 | #include <boost/mpl/if.hpp>
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23 |
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24 | namespace boost { namespace iostreams {
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25 |
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26 | //
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27 | // Macro: BOOST_IOSTREAMS_DEFINE_FILTERBUF(name_, chain_type_, default_char_)
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28 | // Description: Defines a template derived from std::basic_streambuf which uses
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29 | // a chain to perform i/o. The template has the following parameters:
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30 | // Ch - The character type.
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31 | // Tr - The character traits type.
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32 | // Alloc - The allocator type.
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33 | // Access - Indicates accessibility of the chain interface; must be either
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34 | // public_ or protected_; defaults to public_.
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35 | //
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36 | #define BOOST_IOSTREAMS_DEFINE_FILTER_STREAMBUF(name_, chain_type_, default_char_) \
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37 | template< typename Mode, typename Ch = default_char_, \
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38 | typename Tr = BOOST_IOSTREAMS_CHAR_TRAITS(Ch), \
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39 | typename Alloc = std::allocator<Ch>, typename Access = public_ > \
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40 | class name_ : public boost::iostreams::detail::chainbuf< \
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41 | chain_type_<Mode, Ch, Tr, Alloc>, Mode, Access \
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42 | > \
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43 | { \
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44 | public: \
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45 | typedef Ch char_type; \
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46 | BOOST_IOSTREAMS_STREAMBUF_TYPEDEFS(Tr) \
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47 | typedef Mode mode; \
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48 | typedef chain_type_<Mode, Ch, Tr, Alloc> chain_type; \
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49 | name_() { } \
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50 | BOOST_IOSTREAMS_DEFINE_PUSH_CONSTRUCTOR(name_, mode, Ch, push_impl) \
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51 | ~name_() { if (this->is_complete()) this->BOOST_IOSTREAMS_PUBSYNC(); } \
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52 | }; \
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53 | /**/
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54 | BOOST_IOSTREAMS_DEFINE_FILTER_STREAMBUF(filtering_streambuf, boost::iostreams::chain, char)
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55 | BOOST_IOSTREAMS_DEFINE_FILTER_STREAMBUF(filtering_wstreambuf, boost::iostreams::chain, wchar_t)
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56 |
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57 | typedef filtering_streambuf<input> filtering_istreambuf;
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58 | typedef filtering_streambuf<output> filtering_ostreambuf;
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59 | typedef filtering_wstreambuf<input> filtering_wistreambuf;
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60 | typedef filtering_wstreambuf<output> filtering_wostreambuf;
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61 |
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62 | } } // End namespaces iostreams, boost.
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63 |
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64 | #endif // #ifndef BOOST_IOSTREAMS_FILTERING_STREAMBUF_HPP_INCLUDED
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