First release of open-appsec source code

external/cereal/archives/binary.hpp

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+/*! \file binary.hpp
+    \brief Binary input and output archives */
+/*
+  Copyright (c) 2014, Randolph Voorhies, Shane Grant
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+      * Redistributions of source code must retain the above copyright
+        notice, this list of conditions and the following disclaimer.
+      * Redistributions in binary form must reproduce the above copyright
+        notice, this list of conditions and the following disclaimer in the
+        documentation and/or other materials provided with the distribution.
+      * Neither the name of cereal nor the
+        names of its contributors may be used to endorse or promote products
+        derived from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+  DISCLAIMED. IN NO EVENT SHALL RANDOLPH VOORHIES OR SHANE GRANT BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#ifndef CEREAL_ARCHIVES_BINARY_HPP_
+#define CEREAL_ARCHIVES_BINARY_HPP_
+
+#include <cereal/cereal.hpp>
+#include <sstream>
+
+namespace cereal
+{
+  // ######################################################################
+  //! An output archive designed to save data in a compact binary representation
+  /*! This archive outputs data to a stream in an extremely compact binary
+      representation with as little extra metadata as possible.
+
+      This archive does nothing to ensure that the endianness of the saved
+      and loaded data is the same.  If you need to have portability over
+      architectures with different endianness, use PortableBinaryOutputArchive.
+
+      When using a binary archive and a file stream, you must use the
+      std::ios::binary format flag to avoid having your data altered
+      inadvertently.
+
+      \ingroup Archives */
+  class BinaryOutputArchive : public OutputArchive<BinaryOutputArchive, AllowEmptyClassElision>
+  {
+    public:
+      //! Construct, outputting to the provided stream
+      /*! @param stream The stream to output to.  Can be a stringstream, a file stream, or
+                        even cout! */
+      BinaryOutputArchive(std::ostream & stream) :
+        OutputArchive<BinaryOutputArchive, AllowEmptyClassElision>(this),
+        itsStream(stream)
+      { }
+
+      ~BinaryOutputArchive() CEREAL_NOEXCEPT = default;
+
+      //! Writes size bytes of data to the output stream
+      void saveBinary( const void * data, std::size_t size )
+      {
+        auto const writtenSize = static_cast<std::size_t>( itsStream.rdbuf()->sputn( reinterpret_cast<const char*>( data ), size ) );
+
+        if(writtenSize != size)
+          throw Exception("Failed to write " + std::to_string(size) + " bytes to output stream! Wrote " + std::to_string(writtenSize));
+      }
+
+    private:
+      std::ostream & itsStream;
+  };
+
+  // ######################################################################
+  //! An input archive designed to load data saved using BinaryOutputArchive
+  /*  This archive does nothing to ensure that the endianness of the saved
+      and loaded data is the same.  If you need to have portability over
+      architectures with different endianness, use PortableBinaryOutputArchive.
+
+      When using a binary archive and a file stream, you must use the
+      std::ios::binary format flag to avoid having your data altered
+      inadvertently.
+
+      \ingroup Archives */
+  class BinaryInputArchive : public InputArchive<BinaryInputArchive, AllowEmptyClassElision>
+  {
+    public:
+      //! Construct, loading from the provided stream
+      BinaryInputArchive(std::istream & stream) :
+        InputArchive<BinaryInputArchive, AllowEmptyClassElision>(this),
+        itsStream(stream)
+      { }
+
+      ~BinaryInputArchive() CEREAL_NOEXCEPT = default;
+
+      //! Reads size bytes of data from the input stream
+      void loadBinary( void * const data, std::size_t size )
+      {
+        auto const readSize = static_cast<std::size_t>( itsStream.rdbuf()->sgetn( reinterpret_cast<char*>( data ), size ) );
+
+        if(readSize != size)
+          throw Exception("Failed to read " + std::to_string(size) + " bytes from input stream! Read " + std::to_string(readSize));
+      }
+
+    private:
+      std::istream & itsStream;
+  };
+
+  // ######################################################################
+  // Common BinaryArchive serialization functions
+
+  //! Saving for POD types to binary
+  template<class T> inline
+  typename std::enable_if<std::is_arithmetic<T>::value, void>::type
+  CEREAL_SAVE_FUNCTION_NAME(BinaryOutputArchive & ar, T const & t)
+  {
+    ar.saveBinary(std::addressof(t), sizeof(t));
+  }
+
+  //! Loading for POD types from binary
+  template<class T> inline
+  typename std::enable_if<std::is_arithmetic<T>::value, void>::type
+  CEREAL_LOAD_FUNCTION_NAME(BinaryInputArchive & ar, T & t)
+  {
+    ar.loadBinary(std::addressof(t), sizeof(t));
+  }
+
+  //! Serializing NVP types to binary
+  template <class Archive, class T> inline
+  CEREAL_ARCHIVE_RESTRICT(BinaryInputArchive, BinaryOutputArchive)
+  CEREAL_SERIALIZE_FUNCTION_NAME( Archive & ar, NameValuePair<T> & t )
+  {
+    ar( t.value );
+  }
+
+  //! Serializing SizeTags to binary
+  template <class Archive, class T> inline
+  CEREAL_ARCHIVE_RESTRICT(BinaryInputArchive, BinaryOutputArchive)
+  CEREAL_SERIALIZE_FUNCTION_NAME( Archive & ar, SizeTag<T> & t )
+  {
+    ar( t.size );
+  }
+
+  //! Saving binary data
+  template <class T> inline
+  void CEREAL_SAVE_FUNCTION_NAME(BinaryOutputArchive & ar, BinaryData<T> const & bd)
+  {
+    ar.saveBinary( bd.data, static_cast<std::size_t>( bd.size ) );
+  }
+
+  //! Loading binary data
+  template <class T> inline
+  void CEREAL_LOAD_FUNCTION_NAME(BinaryInputArchive & ar, BinaryData<T> & bd)
+  {
+    ar.loadBinary(bd.data, static_cast<std::size_t>(bd.size));
+  }
+} // namespace cereal
+
+// register archives for polymorphic support
+CEREAL_REGISTER_ARCHIVE(cereal::BinaryOutputArchive)
+CEREAL_REGISTER_ARCHIVE(cereal::BinaryInputArchive)
+
+// tie input and output archives together
+CEREAL_SETUP_ARCHIVE_TRAITS(cereal::BinaryInputArchive, cereal::BinaryOutputArchive)
+
+#endif // CEREAL_ARCHIVES_BINARY_HPP_