ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/iostreams/seek.hpp b/include/ndnboost/iostreams/seek.hpp
new file mode 100644
index 0000000..6ff19b1
--- /dev/null
+++ b/include/ndnboost/iostreams/seek.hpp
@@ -0,0 +1,180 @@
+// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
+// (C) Copyright 2003-2007 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 NDNBOOST_IOSTREAMS_SEEK_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_SEEK_HPP_INCLUDED
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <ndnboost/config.hpp> // DEDUCED_TYPENAME, MSVC.
+#include <ndnboost/integer_traits.hpp>
+#include <ndnboost/iostreams/categories.hpp>
+#include <ndnboost/iostreams/detail/dispatch.hpp>
+#include <ndnboost/iostreams/detail/ios.hpp> // streamsize, seekdir, openmode.
+#include <ndnboost/iostreams/detail/streambuf.hpp>
+#include <ndnboost/iostreams/detail/wrap_unwrap.hpp>
+#include <ndnboost/iostreams/operations_fwd.hpp>
+#include <ndnboost/iostreams/positioning.hpp>
+#include <ndnboost/mpl/if.hpp>
+
+// Must come last.
+#include <ndnboost/iostreams/detail/config/disable_warnings.hpp>
+
+namespace ndnboost { namespace iostreams {
+
+namespace detail {
+
+template<typename T>
+struct seek_device_impl;
+
+template<typename T>
+struct seek_filter_impl;
+
+} // End namespace detail.
+
+template<typename T>
+inline std::streampos
+seek( T& t, stream_offset off, NDNBOOST_IOS::seekdir way,
+ NDNBOOST_IOS::openmode which = NDNBOOST_IOS::in | NDNBOOST_IOS::out )
+{
+ using namespace detail;
+ return seek_device_impl<T>::seek(detail::unwrap(t), off, way, which);
+}
+
+template<typename T, typename Device>
+inline std::streampos
+seek( T& t, Device& dev, stream_offset off, NDNBOOST_IOS::seekdir way,
+ NDNBOOST_IOS::openmode which = NDNBOOST_IOS::in | NDNBOOST_IOS::out )
+{
+ using namespace detail;
+ return seek_filter_impl<T>::seek(detail::unwrap(t), dev, off, way, which);
+}
+
+namespace detail {
+
+//------------------Definition of seek_device_impl----------------------------//
+
+template<typename T>
+struct seek_device_impl
+ : mpl::if_<
+ is_custom<T>,
+ operations<T>,
+ seek_device_impl<
+ NDNBOOST_DEDUCED_TYPENAME
+ dispatch<
+ T, iostream_tag, istream_tag, ostream_tag,
+ streambuf_tag, two_head, any_tag
+ >::type
+ >
+ >::type
+ { };
+
+struct seek_impl_basic_ios {
+ template<typename T>
+ static std::streampos seek( T& t, stream_offset off,
+ NDNBOOST_IOS::seekdir way,
+ NDNBOOST_IOS::openmode which )
+ {
+ if ( way == NDNBOOST_IOS::beg &&
+ ( off < integer_traits<std::streamoff>::const_min ||
+ off > integer_traits<std::streamoff>::const_max ) )
+ {
+ return t.rdbuf()->pubseekpos(offset_to_position(off));
+ } else {
+ return t.rdbuf()->pubseekoff(off, way, which);
+ }
+ }
+};
+
+template<>
+struct seek_device_impl<iostream_tag> : seek_impl_basic_ios { };
+
+template<>
+struct seek_device_impl<istream_tag> : seek_impl_basic_ios { };
+
+template<>
+struct seek_device_impl<ostream_tag> : seek_impl_basic_ios { };
+
+template<>
+struct seek_device_impl<streambuf_tag> {
+ template<typename T>
+ static std::streampos seek( T& t, stream_offset off,
+ NDNBOOST_IOS::seekdir way,
+ NDNBOOST_IOS::openmode which )
+ {
+ if ( way == NDNBOOST_IOS::beg &&
+ ( off < integer_traits<std::streamoff>::const_min ||
+ off > integer_traits<std::streamoff>::const_max ) )
+ {
+ return t.NDNBOOST_IOSTREAMS_PUBSEEKPOS(offset_to_position(off));
+ } else {
+ return t.NDNBOOST_IOSTREAMS_PUBSEEKOFF(off, way, which);
+ }
+ }
+};
+
+template<>
+struct seek_device_impl<two_head> {
+ template<typename T>
+ static std::streampos seek( T& t, stream_offset off,
+ NDNBOOST_IOS::seekdir way,
+ NDNBOOST_IOS::openmode which )
+ { return t.seek(off, way, which); }
+};
+
+template<>
+struct seek_device_impl<any_tag> {
+ template<typename T>
+ static std::streampos seek( T& t, stream_offset off,
+ NDNBOOST_IOS::seekdir way,
+ NDNBOOST_IOS::openmode )
+ { return t.seek(off, way); }
+};
+
+//------------------Definition of seek_filter_impl----------------------------//
+
+template<typename T>
+struct seek_filter_impl
+ : mpl::if_<
+ is_custom<T>,
+ operations<T>,
+ seek_filter_impl<
+ NDNBOOST_DEDUCED_TYPENAME
+ dispatch<T, two_head, any_tag>::type
+ >
+ >::type
+ { };
+
+template<>
+struct seek_filter_impl<two_head> {
+ template<typename T, typename Device>
+ static std::streampos seek( T& t, Device& d,
+ stream_offset off,
+ NDNBOOST_IOS::seekdir way,
+ NDNBOOST_IOS::openmode which )
+ { return t.seek(d, off, way, which); }
+};
+
+template<>
+struct seek_filter_impl<any_tag> {
+ template<typename T, typename Device>
+ static std::streampos seek( T& t, Device& d,
+ stream_offset off,
+ NDNBOOST_IOS::seekdir way,
+ NDNBOOST_IOS::openmode )
+ { return t.seek(d, off, way); }
+};
+
+} // End namespace detail.
+
+} } // End namespaces iostreams, boost.
+
+#include <ndnboost/iostreams/detail/config/enable_warnings.hpp>
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_SEEK_HPP_INCLUDED