/usr/include/boost/iostreams/filtering_stream.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
// (C) Copyright 2004-2007 Jonathan Turkanis
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
// See http://www.boost.org/libs/iostreams for documentation.
#ifndef BOOST_IOSTREAMS_FILTER_STREAM_HPP_INCLUDED
#define BOOST_IOSTREAMS_FILTER_STREAM_HPP_INCLUDED
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
#include <memory> // allocator.
#include <boost/iostreams/detail/access_control.hpp>
#include <boost/iostreams/detail/char_traits.hpp>
#include <boost/iostreams/detail/iostream.hpp> // standard streams.
#include <boost/iostreams/detail/push.hpp>
#include <boost/iostreams/detail/select.hpp>
#include <boost/iostreams/detail/streambuf.hpp> // pubsync.
#include <boost/iostreams/filtering_streambuf.hpp>
#include <boost/mpl/and.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/static_assert.hpp>
#include <boost/type_traits/is_convertible.hpp>
// Must come last.
#include <boost/iostreams/detail/config/disable_warnings.hpp> // MSVC.
namespace boost { namespace iostreams {
//--------------Definition of filtered_istream--------------------------------//
namespace detail {
template<typename Mode, typename Ch, typename Tr>
struct filtering_stream_traits {
typedef typename
iostreams::select< // Disambiguation for Tru64
mpl::and_<
is_convertible<Mode, input>,
is_convertible<Mode, output>
>,
BOOST_IOSTREAMS_BASIC_IOSTREAM(Ch, Tr),
is_convertible<Mode, input>,
BOOST_IOSTREAMS_BASIC_ISTREAM(Ch, Tr),
else_,
BOOST_IOSTREAMS_BASIC_OSTREAM(Ch, Tr)
>::type stream_type;
typedef typename
iostreams::select< // Dismbiguation required for Tru64.
mpl::and_<
is_convertible<Mode, input>,
is_convertible<Mode, output>
>,
iostream_tag,
is_convertible<Mode, input>,
istream_tag,
else_,
ostream_tag
>::type stream_tag;
};
template<typename Chain, typename Access>
class filtering_stream_base
: public access_control<
boost::iostreams::detail::chain_client<Chain>,
Access
>,
public filtering_stream_traits<
typename Chain::mode,
typename Chain::char_type,
typename Chain::traits_type
>::stream_type
{
public:
typedef Chain chain_type;
typedef access_control<
boost::iostreams::detail::chain_client<Chain>,
Access
> client_type;
protected:
typedef typename
filtering_stream_traits<
typename Chain::mode,
typename Chain::char_type,
typename Chain::traits_type
>::stream_type stream_type;
filtering_stream_base() : stream_type(0) { this->set_chain(&chain_); }
private:
void notify() { this->rdbuf(chain_.empty() ? 0 : &chain_.front()); }
Chain chain_;
};
} // End namespace detail.
//
// Macro: BOOST_IOSTREAMS_DEFINE_FILTER_STREAM(name_, chain_type_, default_char_)
// Description: Defines a template derived from std::basic_streambuf which uses
// a chain to perform i/o. The template has the following parameters:
// Mode - the i/o mode.
// Ch - The character type.
// Tr - The character traits type.
// Alloc - The allocator type.
// Access - Indicates accessibility of the chain interface; must be either
// public_ or protected_; defaults to public_.
// Macro parameters:
// name_ - The name of the template to be defined.
// chain_type_ - The name of the chain template.
// default_char_ - The default value for the char template parameter.
//
#define BOOST_IOSTREAMS_DEFINE_FILTER_STREAM(name_, chain_type_, default_char_) \
template< typename Mode, \
typename Ch = default_char_, \
typename Tr = BOOST_IOSTREAMS_CHAR_TRAITS(Ch), \
typename Alloc = std::allocator<Ch>, \
typename Access = public_ > \
class name_ \
: public boost::iostreams::detail::filtering_stream_base< \
chain_type_<Mode, Ch, Tr, Alloc>, Access \
> \
{ \
public: \
typedef Ch char_type; \
struct category \
: Mode, \
closable_tag, \
detail::filtering_stream_traits<Mode, Ch, Tr>::stream_tag \
{ }; \
BOOST_IOSTREAMS_STREAMBUF_TYPEDEFS(Tr) \
typedef Mode mode; \
typedef chain_type_<Mode, Ch, Tr, Alloc> chain_type; \
name_() { } \
BOOST_IOSTREAMS_DEFINE_PUSH_CONSTRUCTOR(name_, mode, Ch, push_impl) \
~name_() { \
if (this->is_complete()) \
this->rdbuf()->BOOST_IOSTREAMS_PUBSYNC(); \
} \
private: \
typedef access_control< \
boost::iostreams::detail::chain_client< \
chain_type_<Mode, Ch, Tr, Alloc> \
>, \
Access \
> client_type; \
template<typename T> \
void push_impl(const T& t BOOST_IOSTREAMS_PUSH_PARAMS()) \
{ client_type::push(t BOOST_IOSTREAMS_PUSH_ARGS()); } \
}; \
/**/
BOOST_IOSTREAMS_DEFINE_FILTER_STREAM(filtering_stream, boost::iostreams::chain, char)
BOOST_IOSTREAMS_DEFINE_FILTER_STREAM(wfiltering_stream, boost::iostreams::chain, wchar_t)
typedef filtering_stream<input> filtering_istream;
typedef filtering_stream<output> filtering_ostream;
typedef wfiltering_stream<input> filtering_wistream;
typedef wfiltering_stream<output> filtering_wostream;
//----------------------------------------------------------------------------//
} } // End namespace iostreams, boost
#include <boost/iostreams/detail/config/enable_warnings.hpp> // MSVC
#endif // #ifndef BOOST_IOSTREAMS_FILTER_STREAM_HPP_INCLUDED
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