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1 | // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com) |
2 | // (C) Copyright 2003-2007 Jonathan Turkanis | |
3 | // Distributed under the Boost Software License, Version 1.0. (See accompanying | |
4 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.) | |
5 | ||
6 | // See http://www.boost.org/libs/iostreams for documentation. | |
7 | ||
8 | #ifndef BOOST_IOSTREAMS_FILTERING_STREAMBUF_HPP_INCLUDED | |
9 | #define BOOST_IOSTREAMS_FILTERING_STREAMBUF_HPP_INCLUDED | |
10 | ||
11 | #if defined(_MSC_VER) | |
12 | # pragma once | |
13 | #endif | |
14 | ||
15 | #include <exception> | |
16 | #include <memory> // allocator. | |
17 | #include <boost/iostreams/chain.hpp> | |
18 | #include <boost/iostreams/detail/access_control.hpp> | |
19 | #include <boost/iostreams/detail/char_traits.hpp> | |
20 | #include <boost/iostreams/detail/push.hpp> | |
21 | #include <boost/iostreams/detail/streambuf.hpp> // pubsync. | |
22 | #include <boost/iostreams/detail/streambuf/chainbuf.hpp> | |
23 | #include <boost/mpl/if.hpp> | |
24 | ||
25 | namespace boost { namespace iostreams { | |
26 | ||
27 | // | |
28 | // Macro: BOOST_IOSTREAMS_DEFINE_FILTERBUF(name_, chain_type_, default_char_) | |
29 | // Description: Defines a template derived from std::basic_streambuf which uses | |
30 | // a chain to perform i/o. The template has the following parameters: | |
31 | // Ch - The character type. | |
32 | // Tr - The character traits type. | |
33 | // Alloc - The allocator type. | |
34 | // Access - Indicates accessibility of the chain interface; must be either | |
35 | // public_ or protected_; defaults to public_. | |
36 | // | |
37 | #define BOOST_IOSTREAMS_DEFINE_FILTER_STREAMBUF(name_, chain_type_, default_char_) \ | |
38 | template< typename Mode, \ | |
39 | typename Ch = default_char_, \ | |
40 | typename Tr = BOOST_IOSTREAMS_CHAR_TRAITS(Ch), \ | |
41 | typename Alloc = std::allocator<Ch>, \ | |
42 | typename Access = public_ > \ | |
43 | class name_ : public boost::iostreams::detail::chainbuf< \ | |
44 | chain_type_<Mode, Ch, Tr, Alloc>, Mode, Access \ | |
45 | > \ | |
46 | { \ | |
47 | public: \ | |
48 | typedef Ch char_type; \ | |
49 | struct category \ | |
50 | : Mode, closable_tag, streambuf_tag \ | |
51 | { }; \ | |
52 | BOOST_IOSTREAMS_STREAMBUF_TYPEDEFS(Tr) \ | |
53 | typedef Mode mode; \ | |
54 | typedef chain_type_<Mode, Ch, Tr, Alloc> chain_type; \ | |
55 | name_() { } \ | |
56 | BOOST_IOSTREAMS_DEFINE_PUSH_CONSTRUCTOR(name_, mode, Ch, push_impl) \ | |
57 | ~name_() { if (this->is_complete()) this->BOOST_IOSTREAMS_PUBSYNC(); } \ | |
58 | }; \ | |
59 | /**/ | |
60 | BOOST_IOSTREAMS_DEFINE_FILTER_STREAMBUF(filtering_streambuf, boost::iostreams::chain, char) | |
61 | BOOST_IOSTREAMS_DEFINE_FILTER_STREAMBUF(filtering_wstreambuf, boost::iostreams::chain, wchar_t) | |
62 | ||
63 | typedef filtering_streambuf<input> filtering_istreambuf; | |
64 | typedef filtering_streambuf<output> filtering_ostreambuf; | |
65 | typedef filtering_wstreambuf<input> filtering_wistreambuf; | |
66 | typedef filtering_wstreambuf<output> filtering_wostreambuf; | |
67 | ||
68 | } } // End namespaces iostreams, boost. | |
69 | ||
70 | #endif // #ifndef BOOST_IOSTREAMS_FILTERING_STREAMBUF_HPP_INCLUDED |