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Name	Size	Mode	Actions
adapter/	-	0755	rm
broken_overload_resolution/	-	0755	rm
config/	-	0755	rm
streambuf/	-	0755	rm
absolute_path.hpp	1598	0644	edit dl rm
access_control.hpp	2908	0644	edit dl rm
add_facet.hpp	1572	0644	edit dl rm
bool_trait_def.hpp	1964	0644	edit dl rm
buffer.hpp	7488	0644	edit dl rm
call_traits.hpp	981	0644	edit dl rm
char_traits.hpp	2542	0644	edit dl rm
codecvt_helper.hpp	7277	0644	edit dl rm
codecvt_holder.hpp	1970	0644	edit dl rm
counted_array.hpp	2350	0644	edit dl rm
current_directory.hpp	2312	0644	edit dl rm
default_arg.hpp	700	0644	edit dl rm
dispatch.hpp	1604	0644	edit dl rm
double_object.hpp	3920	0644	edit dl rm
enable_if_stream.hpp	1233	0644	edit dl rm
error.hpp	1534	0644	edit dl rm
execute.hpp	4526	0644	edit dl rm
file_handle.hpp	1033	0644	edit dl rm
forward.hpp	5219	0644	edit dl rm
fstream.hpp	1262	0644	edit dl rm
functional.hpp	5783	0644	edit dl rm
ios.hpp	2060	0644	edit dl rm
iostream.hpp	1288	0644	edit dl rm
is_dereferenceable.hpp	2424	0644	edit dl rm
is_iterator_range.hpp	1103	0644	edit dl rm
newline.hpp	869	0644	edit dl rm
optional.hpp	3289	0644	edit dl rm
param_type.hpp	873	0644	edit dl rm
path.hpp	5994	0644	edit dl rm
push.hpp	7416	0644	edit dl rm
push_params.hpp	767	0644	edit dl rm
resolve.hpp	8453	0644	edit dl rm
restrict_impl.hpp	16898	0644	edit dl rm
select.hpp	3095	0644	edit dl rm
select_by_size.hpp	5662	0644	edit dl rm
streambuf.hpp	1205	0644	edit dl rm
system_failure.hpp	2661	0644	edit dl rm
template_params.hpp	967	0644	edit dl rm
translate_int_type.hpp	2025	0644	edit dl rm
wrap_unwrap.hpp	3328	0644	edit dl rm

Edit: /usr/include/boost/iostreams/detail/restrict_impl.hpp (16898B)

/*
 * 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.

* File:        boost/iostreams/detail/restrict_impl.hpp
 * Date:        Sun Jan 06 12:57:30 MST 2008
 * Copyright:   2007-2008 CodeRage, LLC
 * Author:      Jonathan Turkanis
 * Contact:     turkanis at coderage dot com
 *
 * If included with the macro BOOST_IOSTREAMS_RESTRICT undefined, defines the 
 * class template boost::iostreams::restriction. If included with the macro
 * BOOST_IOSTREAMS_RESTRICT defined as an identifier, defines the overloaded
 * function template boost::iostreams::BOOST_IOSTREAMS_RESTRICT, and object 
 * generator for boost::iostreams::restriction.
 *
 * This design allows <boost/iostreams/restrict.hpp> and 
 * <boost/iostreams/slice.hpp> to share an implementation.
 */

#if !defined(BOOST_IOSTREAMS_RESTRICT_IMPL_HPP_INCLUDED) && \
    !defined(BOOST_IOSTREAMS_RESTRICT)
# define BOOST_IOSTREAMS_RESTRICT_IMPL_HPP_INCLUDED
                    
//------------------Implementation of restriction-----------------------------//

# include <algorithm>          // min.
# include <utility>            // pair.
# include <boost/cstdint.hpp>  // intmax_t.
# include <boost/config.hpp>   // DEDUCED_TYPENAME.
# include <boost/iostreams/categories.hpp>
# include <boost/iostreams/char_traits.hpp>
# include <boost/iostreams/detail/adapter/device_adapter.hpp>
# include <boost/iostreams/detail/adapter/filter_adapter.hpp>
# include <boost/iostreams/detail/call_traits.hpp>
# include <boost/iostreams/detail/enable_if_stream.hpp>
# include <boost/iostreams/detail/error.hpp>
# include <boost/iostreams/detail/ios.hpp>     // failure.
# include <boost/iostreams/detail/select.hpp>
# include <boost/iostreams/operations.hpp>
# include <boost/iostreams/skip.hpp>
# include <boost/iostreams/traits.hpp>         // mode_of, is_direct.
# include <boost/mpl/bool.hpp>
# include <boost/static_assert.hpp>
# include <boost/throw_exception.hpp>
# include <boost/type_traits/is_convertible.hpp>

# include <boost/iostreams/detail/config/disable_warnings.hpp>

namespace boost { namespace iostreams {

namespace detail {

//
// Template name: restricted_indirect_device.
// Description: Provides an restricted view of an indirect Device.
// Template parameters:
//      Device - An indirect model of Device that models either Source or
//          SeekableDevice.
//
template<typename Device>
class restricted_indirect_device : public device_adapter<Device> {
private:
    typedef typename detail::param_type<Device>::type  param_type;
public:
    typedef typename char_type_of<Device>::type  char_type;
    typedef typename mode_of<Device>::type       mode;
    BOOST_STATIC_ASSERT(!(is_convertible<mode, detail::two_sequence>::value));
    struct category
        : mode,
          device_tag,
          closable_tag,
          flushable_tag,
          localizable_tag,
          optimally_buffered_tag
        { };
    restricted_indirect_device( param_type dev, stream_offset off,
                                stream_offset len = -1 );
    std::streamsize read(char_type* s, std::streamsize n);
    std::streamsize write(const char_type* s, std::streamsize n);
    std::streampos seek(stream_offset off, BOOST_IOS::seekdir way);
private:
    stream_offset beg_, pos_, end_;
};

//
// Template name: restricted_direct_device.
// Description: Provides an restricted view of a Direct Device.
// Template parameters:
//      Device - A model of Direct and Device.
//
template<typename Device>
class restricted_direct_device : public device_adapter<Device> {
public:
    typedef typename char_type_of<Device>::type  char_type;
    typedef std::pair<char_type*, char_type*>    pair_type;
    typedef typename mode_of<Device>::type       mode;
    BOOST_STATIC_ASSERT(!(is_convertible<mode, detail::two_sequence>::value));
    struct category
        : mode_of<Device>::type,
          device_tag,
          direct_tag,
          closable_tag,
          localizable_tag
        { };
    restricted_direct_device( const Device& dev, stream_offset off,
                              stream_offset len = -1 );
    pair_type input_sequence();
    pair_type output_sequence();
private:
    pair_type sequence(mpl::true_);
    pair_type sequence(mpl::false_);
    char_type *beg_, *end_;
};

//
// Template name: restricted_filter.
// Description: Provides an restricted view of a Filter.
// Template parameters:
//      Filter - An indirect model of Filter.
//
template<typename Filter>
class restricted_filter : public filter_adapter<Filter> {
public:
    typedef typename char_type_of<Filter>::type char_type;
    typedef typename mode_of<Filter>::type      mode;
    BOOST_STATIC_ASSERT(!(is_convertible<mode, detail::two_sequence>::value));
    struct category
        : mode,
          filter_tag,
          multichar_tag,
          closable_tag,
          localizable_tag,
          optimally_buffered_tag
        { };
    restricted_filter( const Filter& flt, stream_offset off, 
                       stream_offset len = -1 );

template<typename Source>
    std::streamsize read(Source& src, char_type* s, std::streamsize n)
    {
        using namespace std;
        if (!open_)
            open(src, BOOST_IOS::in);
        std::streamsize amt =
            end_ != -1 ?
                (std::min) (n, static_cast<std::streamsize>(end_ - pos_)) :
                n;
        std::streamsize result = 
            iostreams::read(this->component(), src, s, amt);
        if (result != -1)
            pos_ += result;
        return result;
    }

template<typename Sink>
    std::streamsize write(Sink& snk, const char_type* s, std::streamsize n)
    {
        if (!open_)
            open(snk, BOOST_IOS::out);
        if (end_ != -1 && pos_ + n >= end_) {
            if(pos_ < end_)
                pos_ += iostreams::write(this->component(),
                    snk, s, end_ - pos_);
            boost::throw_exception(bad_write());
        }
        std::streamsize result = 
            iostreams::write(this->component(), snk, s, n);
        pos_ += result;
        return result;
    }

template<typename Device>
    std::streampos seek(Device& dev, stream_offset off, BOOST_IOS::seekdir way)
    {
        stream_offset next;
        if (way == BOOST_IOS::beg) {
            next = beg_ + off;
        } else if (way == BOOST_IOS::cur) {
            next = pos_ + off;
        } else if (end_ != -1) {
            next = end_ + off;
        } else {
            // Restriction is half-open; seek relative to the actual end.
            pos_ = this->component().seek(dev, off, BOOST_IOS::end);
            if (pos_ < beg_)
                boost::throw_exception(bad_seek());
            return offset_to_position(pos_ - beg_);
        }
        if (next < beg_ || (end_ != -1 && next >= end_))
            boost::throw_exception(bad_seek());
        pos_ = this->component().seek(dev, next, BOOST_IOS::cur);
        return offset_to_position(pos_ - beg_);
    }

template<typename Device>
    void close(Device& dev) 
    { 
        open_ = false;
        detail::close_all(this->component(), dev); 
    }

template<typename Device>
    void close(Device& dev, BOOST_IOS::openmode which) 
    { 
        open_ = false;
        iostreams::close(this->component(), dev, which); 
    }
private:
    template<typename Device>
    void open(Device& dev, BOOST_IOS::openmode which)
    {
        typedef typename is_convertible<mode, dual_use>::type is_dual_use;
        open_ = true;
        which = is_dual_use() ? which : (BOOST_IOS::in | BOOST_IOS::out);
        iostreams::skip(this->component(), dev, beg_, which);
    }

stream_offset  beg_, pos_, end_;
    bool           open_;
};

template<typename T>
struct restriction_traits
    : iostreams::select<  // Disambiguation for Tru64.
          is_filter<T>,  restricted_filter<T>,
          is_direct<T>,  restricted_direct_device<T>,
          else_,         restricted_indirect_device<T>
      >
    { };

} // End namespace detail.

template<typename T>
struct restriction : public detail::restriction_traits<T>::type {
    typedef typename detail::param_type<T>::type          param_type;
    typedef typename detail::restriction_traits<T>::type  base_type;
    restriction(param_type t, stream_offset off, stream_offset len = -1)
        : base_type(t, off, len)
        { }
};

namespace detail {

//--------------Implementation of restricted_indirect_device------------------//

template<typename Device>
restricted_indirect_device<Device>::restricted_indirect_device
    (param_type dev, stream_offset off, stream_offset len)
    : device_adapter<Device>(dev), beg_(off), pos_(off), 
      end_(len != -1 ? off + len : -1)
{
    if (len < -1 || off < 0)
        boost::throw_exception(BOOST_IOSTREAMS_FAILURE("bad offset"));
    iostreams::skip(this->component(), off);
}

template<typename Device>
inline std::streamsize restricted_indirect_device<Device>::read
    (char_type* s, std::streamsize n)
{
    using namespace std;
    std::streamsize amt =
        end_ != -1 ?
            (std::min) (n, static_cast<std::streamsize>(end_ - pos_)) :
            n;
    std::streamsize result = iostreams::read(this->component(), s, amt);
    if (result != -1)
        pos_ += result;
    return result;
}

template<typename Device>
inline std::streamsize restricted_indirect_device<Device>::write
    (const char_type* s, std::streamsize n)
{
    if (end_ != -1 && pos_ + n >= end_) {
        if(pos_ < end_)
            pos_ += iostreams::write(this->component(), s, end_ - pos_);
        boost::throw_exception(bad_write());
    }
    std::streamsize result = iostreams::write(this->component(), s, n);
    pos_ += result;
    return result;
}

template<typename Device>
std::streampos restricted_indirect_device<Device>::seek
    (stream_offset off, BOOST_IOS::seekdir way)
{
    stream_offset next;
    if (way == BOOST_IOS::beg) {
        next = beg_ + off;
    } else if (way == BOOST_IOS::cur) {
        next = pos_ + off;
    } else if (end_ != -1) {
        next = end_ + off;
    } else {
        // Restriction is half-open; seek relative to the actual end.
        pos_ = iostreams::seek(this->component(), off, BOOST_IOS::end);
        if (pos_ < beg_)
            boost::throw_exception(bad_seek());
        return offset_to_position(pos_ - beg_);
    }
    if (next < beg_ || (end_ != -1 && next > end_))
        boost::throw_exception(bad_seek());
    pos_ = iostreams::seek(this->component(), next - pos_, BOOST_IOS::cur);
    return offset_to_position(pos_ - beg_);
}

//--------------Implementation of restricted_direct_device--------------------//

template<typename Device>
restricted_direct_device<Device>::restricted_direct_device
    (const Device& dev, stream_offset off, stream_offset len)
    : device_adapter<Device>(dev), beg_(0), end_(0)
{
    std::pair<char_type*, char_type*> seq =
        sequence(is_convertible<category, input>());
    if ( off < 0 || len < -1 || 
         (len != -1 && off + len > seq.second - seq.first) )
    {
        boost::throw_exception(BOOST_IOSTREAMS_FAILURE("bad offset"));
    }
    beg_ = seq.first + off;
    end_ = len != -1 ? 
        seq.first + off + len :
        seq.second;
}

template<typename Device>
typename restricted_direct_device<Device>::pair_type
restricted_direct_device<Device>::input_sequence()
{
    BOOST_STATIC_ASSERT((is_convertible<category, input>::value));
    return std::make_pair(beg_, end_);
}

template<typename Device>
typename restricted_direct_device<Device>::pair_type
restricted_direct_device<Device>::output_sequence()
{
    BOOST_STATIC_ASSERT((is_convertible<category, output>::value));
    return std::make_pair(beg_, end_);
}

template<typename Device>
typename restricted_direct_device<Device>::pair_type
restricted_direct_device<Device>::sequence(mpl::true_)
{ return iostreams::input_sequence(this->component()); }

template<typename Device>
typename restricted_direct_device<Device>::pair_type
restricted_direct_device<Device>::sequence(mpl::false_)
{ return iostreams::output_sequence(this->component()); }

//--------------Implementation of restricted_filter---------------------------//

template<typename Filter>
restricted_filter<Filter>::restricted_filter
    (const Filter& flt, stream_offset off, stream_offset len)
    : filter_adapter<Filter>(flt), beg_(off),
      pos_(off), end_(len != -1 ? off + len : -1), open_(false)
{
    if (len < -1 || off < 0)
        boost::throw_exception(BOOST_IOSTREAMS_FAILURE("bad offset"));
}

} // End namespace detail.

} } // End namespaces iostreams, boost.

#elif defined(BOOST_IOSTREAMS_RESTRICT)

namespace boost { namespace iostreams {

//--------------Implementation of restrict/slice------------------------------//

// Note: The following workarounds are patterned after resolve.hpp. It has not
// yet been confirmed that they are necessary.

# ifndef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION //------------------------//
#  ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //------------------------------//

template<typename T>
restriction<T> 
BOOST_IOSTREAMS_RESTRICT( const T& t, stream_offset off, stream_offset len = -1
                          BOOST_IOSTREAMS_DISABLE_IF_STREAM(T) )
{ return restriction<T>(t, off, len); }

template<typename Ch, typename Tr>
restriction< std::basic_streambuf<Ch, Tr> >
BOOST_IOSTREAMS_RESTRICT( std::basic_streambuf<Ch, Tr>& sb, stream_offset off, 
                          stream_offset len = -1 )
{ return restriction< std::basic_streambuf<Ch, Tr> >(sb, off, len); }

template<typename Ch, typename Tr>
restriction< std::basic_istream<Ch, Tr> >
BOOST_IOSTREAMS_RESTRICT
    (std::basic_istream<Ch, Tr>& is, stream_offset off, stream_offset len = -1)
{ return restriction< std::basic_istream<Ch, Tr> >(is, off, len); }

template<typename Ch, typename Tr>
restriction< std::basic_ostream<Ch, Tr> >
BOOST_IOSTREAMS_RESTRICT
    (std::basic_ostream<Ch, Tr>& os, stream_offset off, stream_offset len = -1)
{ return restriction< std::basic_ostream<Ch, Tr> >(os, off, len); }

template<typename Ch, typename Tr>
restriction< std::basic_iostream<Ch, Tr> >
BOOST_IOSTREAMS_RESTRICT
    (std::basic_iostream<Ch, Tr>& io, stream_offset off, stream_offset len = -1)
{ return restriction< std::basic_iostream<Ch, Tr> >(io, off, len); }

#  else // # ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //--------------------//

restriction<std::streambuf> 
BOOST_IOSTREAMS_RESTRICT
    (std::streambuf& sb, stream_offset off, stream_offset len = -1)
{ return restriction<std::streambuf>(sb, off, len); }

restriction<std::istream> 
BOOST_IOSTREAMS_RESTRICT
    (std::istream<Ch, Tr>& is, stream_offset off, stream_offset len = -1)
{ return restriction<std::istream>(is, off, len); }

restriction<std::ostream> 
BOOST_IOSTREAMS_RESTRICT
    (std::ostream<Ch, Tr>& os, stream_offset off, stream_offset len = -1)
{ return restriction<std::ostream>(os, off, len); }

restriction<std::iostream> 
BOOST_IOSTREAMS_RESTRICT
    (std::iostream<Ch, Tr>& io, stream_offset off, stream_offset len = -1)
{ return restriction<std::iostream>(io, off, len); }

#  endif // # ifndef BOOST_IOSTREAMS_NO_STREAM_TEMPLATES //-------------------//
# else // #ifndef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION //---------------//

template<typename T>
restriction<T> 
BOOST_IOSTREAMS_RESTRICT
    (const T& t, stream_offset off, stream_offset len, mpl::true_)
{   // Bad overload resolution.
    return restriction<T>(const_cast<T&>(t, off, len));
}

template<typename T>
restriction<T> 
BOOST_IOSTREAMS_RESTRICT
    (const T& t, stream_offset off, stream_offset len, mpl::false_)
{ return restriction<T>(t, off, len); }

template<typename T>
restriction<T> 
BOOST_IOSTREAMS_RESTRICT( const T& t, stream_offset off, stream_offset len = -1
                          BOOST_IOSTREAMS_DISABLE_IF_STREAM(T) )
{ return BOOST_IOSTREAMS_RESTRICT(t, off, len, is_std_io<T>()); }

# if !BOOST_WORKAROUND(__BORLANDC__, < 0x600) && \
     !defined(__GNUC__) // ---------------------------------------------------//

template<typename T>
restriction<T>
BOOST_IOSTREAMS_RESTRICT(T& t, stream_offset off, stream_offset len = -1)
{ return restriction<T>(t, off, len); }

#  endif // Borland 5.x or GCC //-------------------------------//
# endif // #ifndef BOOST_IOSTREAMS_BROKEN_OVERLOAD_RESOLUTION //--------------//

} } // End namespaces iostreams, boost.

# include <boost/iostreams/detail/config/enable_warnings.hpp>

#endif // #if !defined(BOOST_IOSTREAMS_RESTRICT_IMPL_HPP_INCLUDED) ...

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