std::filesystem::path support

include/cereal/types/filesystem.hpp

@@ -0,0 +1,62 @@
+/*! \file filesystem.hpp
+    \brief Support for types found in \<filesystem\>
+    \ingroup STLSupport */
+/*
+  Copyright (c) 2023, Francois Michaut
+  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 the copyright holder 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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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_TYPES_FILESYSTEM_HPP_
+#define CEREAL_TYPES_FILESYSTEM_HPP_
+
+#include "cereal/cereal.hpp"
+#include "cereal/types/string.hpp"
+#include <filesystem>
+
+namespace cereal
+{
+  //! Serialization for std::filesystem::path types, if binary data is supported
+  template<class Archive> inline
+  typename std::enable_if<traits::is_output_serializable<BinaryData<std::filesystem::path::value_type>, Archive>::value, void>::type
+  CEREAL_SAVE_FUNCTION_NAME(Archive & ar, std::filesystem::path const & path)
+  {
+    // Save native path format
+    ar(path.native());
+  }
+
+  //! Serialization for std::filesystem::path types, if binary data is supported
+  template<class Archive> inline
+  typename std::enable_if<traits::is_input_serializable<BinaryData<std::filesystem::path::value_type>, Archive>::value, void>::type
+  CEREAL_LOAD_FUNCTION_NAME(Archive & ar, std::filesystem::path & path)
+  {
+    // load native path string
+    std::filesystem::path::string_type str;
+
+    ar(str);
+    path = std::move(str);
+  }
+
+} // namespace cereal
+
+#endif // CEREAL_TYPES_FILESYSTEM_HPP_