ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/iostreams/detail/streambuf/indirect_streambuf.hpp b/include/ndnboost/iostreams/detail/streambuf/indirect_streambuf.hpp
new file mode 100644
index 0000000..d657ddb
--- /dev/null
+++ b/include/ndnboost/iostreams/detail/streambuf/indirect_streambuf.hpp
@@ -0,0 +1,432 @@
+// (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.
+
+// This material is heavily indebted to the discussion and code samples in
+// A. Langer and K. Kreft, "Standard C++ IOStreams and Locales",
+// Addison-Wesley, 2000, pp. 228-43.
+
+// User "GMSB" provided an optimization for small seeks.
+
+#ifndef NDNBOOST_IOSTREAMS_DETAIL_INDIRECT_STREAMBUF_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_DETAIL_INDIRECT_STREAMBUF_HPP_INCLUDED
+
+#include <algorithm> // min, max.
+#include <cassert>
+#include <exception>
+#include <typeinfo>
+#include <ndnboost/config.hpp> // Member template friends.
+#include <ndnboost/detail/workaround.hpp>
+#include <ndnboost/iostreams/constants.hpp>
+#include <ndnboost/iostreams/detail/adapter/concept_adapter.hpp>
+#include <ndnboost/iostreams/detail/buffer.hpp>
+#include <ndnboost/iostreams/detail/config/wide_streams.hpp>
+#include <ndnboost/iostreams/detail/double_object.hpp>
+#include <ndnboost/iostreams/detail/execute.hpp>
+#include <ndnboost/iostreams/detail/functional.hpp>
+#include <ndnboost/iostreams/detail/ios.hpp>
+#include <ndnboost/iostreams/detail/optional.hpp>
+#include <ndnboost/iostreams/detail/push.hpp>
+#include <ndnboost/iostreams/detail/streambuf/linked_streambuf.hpp>
+#include <ndnboost/iostreams/operations.hpp>
+#include <ndnboost/iostreams/positioning.hpp>
+#include <ndnboost/iostreams/traits.hpp>
+#include <ndnboost/iostreams/operations.hpp>
+#include <ndnboost/mpl/if.hpp>
+#include <ndnboost/throw_exception.hpp>
+#include <ndnboost/type_traits/is_convertible.hpp>
+
+// Must come last.
+#include <ndnboost/iostreams/detail/config/disable_warnings.hpp> // MSVC, BCC 5.x
+
+namespace ndnboost { namespace iostreams { namespace detail {
+
+//
+// Description: The implementation of basic_streambuf used by chains.
+//
+template<typename T, typename Tr, typename Alloc, typename Mode>
+class indirect_streambuf
+ : public linked_streambuf<NDNBOOST_DEDUCED_TYPENAME char_type_of<T>::type, Tr>
+{
+public:
+ typedef typename char_type_of<T>::type char_type;
+ NDNBOOST_IOSTREAMS_STREAMBUF_TYPEDEFS(Tr)
+private:
+ typedef typename category_of<T>::type category;
+ typedef concept_adapter<T> wrapper;
+ typedef detail::basic_buffer<char_type, Alloc> buffer_type;
+ typedef indirect_streambuf<T, Tr, Alloc, Mode> my_type;
+ typedef detail::linked_streambuf<char_type, traits_type> base_type;
+ typedef linked_streambuf<char_type, Tr> streambuf_type;
+public:
+ indirect_streambuf();
+
+ void open(const T& t NDNBOOST_IOSTREAMS_PUSH_PARAMS());
+ bool is_open() const;
+ void close();
+ bool auto_close() const;
+ void set_auto_close(bool close);
+ bool strict_sync();
+
+ // Declared in linked_streambuf.
+ T* component() { return &*obj(); }
+protected:
+#if !NDNBOOST_WORKAROUND(__GNUC__, == 2)
+ NDNBOOST_IOSTREAMS_USING_PROTECTED_STREAMBUF_MEMBERS(base_type)
+#endif
+
+ //----------virtual functions---------------------------------------------//
+
+#ifndef NDNBOOST_IOSTREAMS_NO_LOCALE
+ void imbue(const std::locale& loc);
+#endif
+#ifdef NDNBOOST_IOSTREAMS_NO_STREAM_TEMPLATES
+ public:
+#endif
+ int_type underflow();
+ int_type pbackfail(int_type c);
+ int_type overflow(int_type c);
+ int sync();
+ pos_type seekoff( off_type off, NDNBOOST_IOS::seekdir way,
+ NDNBOOST_IOS::openmode which );
+ pos_type seekpos(pos_type sp, NDNBOOST_IOS::openmode which);
+
+ // Declared in linked_streambuf.
+ void set_next(streambuf_type* next);
+ void close_impl(NDNBOOST_IOS::openmode m);
+ const std::type_info& component_type() const { return typeid(T); }
+ void* component_impl() { return component(); }
+private:
+
+ //----------Accessor functions--------------------------------------------//
+
+ wrapper& obj() { return *storage_; }
+ streambuf_type* next() const { return next_; }
+ buffer_type& in() { return buffer_.first(); }
+ buffer_type& out() { return buffer_.second(); }
+ bool can_read() const { return is_convertible<Mode, input>::value; }
+ bool can_write() const { return is_convertible<Mode, output>::value; }
+ bool output_buffered() const { return (flags_ & f_output_buffered) != 0; }
+ bool shared_buffer() const { return is_convertible<Mode, seekable>::value; }
+ void set_flags(int f) { flags_ = f; }
+
+ //----------State changing functions--------------------------------------//
+
+ virtual void init_get_area();
+ virtual void init_put_area();
+
+ //----------Utility function----------------------------------------------//
+
+ pos_type seek_impl( stream_offset off, NDNBOOST_IOS::seekdir way,
+ NDNBOOST_IOS::openmode which );
+ void sync_impl();
+
+ enum flag_type {
+ f_open = 1,
+ f_output_buffered = f_open << 1,
+ f_auto_close = f_output_buffered << 1
+ };
+
+ optional<wrapper> storage_;
+ streambuf_type* next_;
+ double_object<
+ buffer_type,
+ is_convertible<
+ Mode,
+ two_sequence
+ >
+ > buffer_;
+ std::streamsize pback_size_;
+ int flags_;
+};
+
+//--------------Implementation of indirect_streambuf--------------------------//
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+indirect_streambuf<T, Tr, Alloc, Mode>::indirect_streambuf()
+ : next_(0), pback_size_(0), flags_(f_auto_close) { }
+
+//--------------Implementation of open, is_open and close---------------------//
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+void indirect_streambuf<T, Tr, Alloc, Mode>::open
+ (const T& t, std::streamsize buffer_size, std::streamsize pback_size)
+{
+ using namespace std;
+
+ // Normalize buffer sizes.
+ buffer_size =
+ (buffer_size != -1) ?
+ buffer_size :
+ iostreams::optimal_buffer_size(t);
+ pback_size =
+ (pback_size != -1) ?
+ pback_size :
+ default_pback_buffer_size;
+
+ // Construct input buffer.
+ if (can_read()) {
+ pback_size_ = (std::max)(std::streamsize(2), pback_size); // STLPort needs 2.
+ std::streamsize size =
+ pback_size_ +
+ ( buffer_size ? buffer_size: 1 );
+ in().resize(size);
+ if (!shared_buffer())
+ init_get_area();
+ }
+
+ // Construct output buffer.
+ if (can_write() && !shared_buffer()) {
+ if (buffer_size != 0)
+ out().resize(buffer_size);
+ init_put_area();
+ }
+
+ storage_.reset(wrapper(t));
+ flags_ |= f_open;
+ if (can_write() && buffer_size > 1)
+ flags_ |= f_output_buffered;
+ this->set_true_eof(false);
+ this->set_needs_close();
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+inline bool indirect_streambuf<T, Tr, Alloc, Mode>::is_open() const
+{ return (flags_ & f_open) != 0; }
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+void indirect_streambuf<T, Tr, Alloc, Mode>::close()
+{
+ using namespace std;
+ base_type* self = this;
+ detail::execute_all(
+ detail::call_member_close(*self, NDNBOOST_IOS::in),
+ detail::call_member_close(*self, NDNBOOST_IOS::out),
+ detail::call_reset(storage_),
+ detail::clear_flags(flags_)
+ );
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+bool indirect_streambuf<T, Tr, Alloc, Mode>::auto_close() const
+{ return (flags_ & f_auto_close) != 0; }
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+void indirect_streambuf<T, Tr, Alloc, Mode>::set_auto_close(bool close)
+{ flags_ = (flags_ & ~f_auto_close) | (close ? f_auto_close : 0); }
+
+//--------------Implementation virtual functions------------------------------//
+
+#ifndef NDNBOOST_IOSTREAMS_NO_LOCALE
+template<typename T, typename Tr, typename Alloc, typename Mode>
+void indirect_streambuf<T, Tr, Alloc, Mode>::imbue(const std::locale& loc)
+{
+ if (is_open()) {
+ obj().imbue(loc);
+ if (next_)
+ next_->pubimbue(loc);
+ }
+}
+#endif
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+typename indirect_streambuf<T, Tr, Alloc, Mode>::int_type
+indirect_streambuf<T, Tr, Alloc, Mode>::underflow()
+{
+ using namespace std;
+ if (!gptr()) init_get_area();
+ buffer_type& buf = in();
+ if (gptr() < egptr()) return traits_type::to_int_type(*gptr());
+
+ // Fill putback buffer.
+ std::streamsize keep =
+ (std::min)( static_cast<std::streamsize>(gptr() - eback()),
+ pback_size_ );
+ if (keep)
+ traits_type::move( buf.data() + (pback_size_ - keep),
+ gptr() - keep, keep );
+
+ // Set pointers to reasonable values in case read throws.
+ setg( buf.data() + pback_size_ - keep,
+ buf.data() + pback_size_,
+ buf.data() + pback_size_ );
+
+ // Read from source.
+ std::streamsize chars =
+ obj().read(buf.data() + pback_size_, buf.size() - pback_size_, next_);
+ if (chars == -1) {
+ this->set_true_eof(true);
+ chars = 0;
+ }
+ setg(eback(), gptr(), buf.data() + pback_size_ + chars);
+ return chars != 0 ?
+ traits_type::to_int_type(*gptr()) :
+ traits_type::eof();
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+typename indirect_streambuf<T, Tr, Alloc, Mode>::int_type
+indirect_streambuf<T, Tr, Alloc, Mode>::pbackfail(int_type c)
+{
+ if (gptr() != eback()) {
+ gbump(-1);
+ if (!traits_type::eq_int_type(c, traits_type::eof()))
+ *gptr() = traits_type::to_char_type(c);
+ return traits_type::not_eof(c);
+ } else {
+ ndnboost::throw_exception(bad_putback());
+ }
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+typename indirect_streambuf<T, Tr, Alloc, Mode>::int_type
+indirect_streambuf<T, Tr, Alloc, Mode>::overflow(int_type c)
+{
+ if ( (output_buffered() && pptr() == 0) ||
+ (shared_buffer() && gptr() != 0) )
+ {
+ init_put_area();
+ }
+ if (!traits_type::eq_int_type(c, traits_type::eof())) {
+ if (output_buffered()) {
+ if (pptr() == epptr()) {
+ sync_impl();
+ if (pptr() == epptr())
+ return traits_type::eof();
+ }
+ *pptr() = traits_type::to_char_type(c);
+ pbump(1);
+ } else {
+ char_type d = traits_type::to_char_type(c);
+ if (obj().write(&d, 1, next_) != 1)
+ return traits_type::eof();
+ }
+ }
+ return traits_type::not_eof(c);
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+int indirect_streambuf<T, Tr, Alloc, Mode>::sync()
+{
+ try { // sync() is no-throw.
+ sync_impl();
+ obj().flush(next_);
+ return 0;
+ } catch (...) { return -1; }
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+bool indirect_streambuf<T, Tr, Alloc, Mode>::strict_sync()
+{
+ try { // sync() is no-throw.
+ sync_impl();
+ return obj().flush(next_);
+ } catch (...) { return false; }
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+inline typename indirect_streambuf<T, Tr, Alloc, Mode>::pos_type
+indirect_streambuf<T, Tr, Alloc, Mode>::seekoff
+ (off_type off, NDNBOOST_IOS::seekdir way, NDNBOOST_IOS::openmode which)
+{ return seek_impl(off, way, which); }
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+inline typename indirect_streambuf<T, Tr, Alloc, Mode>::pos_type
+indirect_streambuf<T, Tr, Alloc, Mode>::seekpos
+ (pos_type sp, NDNBOOST_IOS::openmode which)
+{
+ return seek_impl(position_to_offset(sp), NDNBOOST_IOS::beg, which);
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+typename indirect_streambuf<T, Tr, Alloc, Mode>::pos_type
+indirect_streambuf<T, Tr, Alloc, Mode>::seek_impl
+ (stream_offset off, NDNBOOST_IOS::seekdir way, NDNBOOST_IOS::openmode which)
+{
+ if ( gptr() != 0 && way == NDNBOOST_IOS::cur && which == NDNBOOST_IOS::in &&
+ eback() - gptr() <= off && off <= egptr() - gptr() )
+ { // Small seek optimization
+ gbump(off);
+ return obj().seek(0, NDNBOOST_IOS::cur, NDNBOOST_IOS::in, next_) -
+ static_cast<off_type>(egptr() - gptr());
+ }
+ if (pptr() != 0)
+ this->NDNBOOST_IOSTREAMS_PUBSYNC(); // sync() confuses VisualAge 6.
+ if (way == NDNBOOST_IOS::cur && gptr())
+ off -= static_cast<off_type>(egptr() - gptr());
+ setg(0, 0, 0);
+ setp(0, 0);
+ return obj().seek(off, way, which, next_);
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+inline void indirect_streambuf<T, Tr, Alloc, Mode>::set_next
+ (streambuf_type* next)
+{ next_ = next; }
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+inline void indirect_streambuf<T, Tr, Alloc, Mode>::close_impl
+ (NDNBOOST_IOS::openmode which)
+{
+ if (which == NDNBOOST_IOS::in && is_convertible<Mode, input>::value) {
+ setg(0, 0, 0);
+ }
+ if (which == NDNBOOST_IOS::out && is_convertible<Mode, output>::value) {
+ sync();
+ setp(0, 0);
+ }
+ if ( !is_convertible<category, dual_use>::value ||
+ is_convertible<Mode, input>::value == (which == NDNBOOST_IOS::in) )
+ {
+ obj().close(which, next_);
+ }
+}
+
+//----------State changing functions------------------------------------------//
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+void indirect_streambuf<T, Tr, Alloc, Mode>::sync_impl()
+{
+ std::streamsize avail, amt;
+ if ((avail = static_cast<std::streamsize>(pptr() - pbase())) > 0) {
+ if ((amt = obj().write(pbase(), avail, next())) == avail)
+ setp(out().begin(), out().end());
+ else {
+ const char_type* ptr = pptr();
+ setp(out().begin() + amt, out().end());
+ pbump(ptr - pptr());
+ }
+ }
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+void indirect_streambuf<T, Tr, Alloc, Mode>::init_get_area()
+{
+ if (shared_buffer() && pptr() != 0) {
+ sync_impl();
+ setp(0, 0);
+ }
+ setg(in().begin(), in().begin(), in().begin());
+}
+
+template<typename T, typename Tr, typename Alloc, typename Mode>
+void indirect_streambuf<T, Tr, Alloc, Mode>::init_put_area()
+{
+ using namespace std;
+ if (shared_buffer() && gptr() != 0)
+ setg(0, 0, 0);
+ if (output_buffered())
+ setp(out().begin(), out().end());
+ else
+ setp(0, 0);
+}
+
+//----------------------------------------------------------------------------//
+
+} } } // End namespaces detail, iostreams, boost.
+
+#include <ndnboost/iostreams/detail/config/enable_warnings.hpp> // MSVC, BCC 5.x
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_DETAIL_INDIRECT_STREAMBUF_HPP_INCLUDED