Add a bitsery extension for serializing paths

src/common/bitsery/ext/boost-path.h

@@ -0,0 +1,65 @@
+// yabridge: a Wine VST bridge
+// Copyright (C) 2020  Robbert van der Helm
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#ifdef __WINE__
+#include "../wine-host/boost-fix.h"
+#endif
+#include <boost/filesystem.hpp>
+
+#include <bitsery/details/serialization_common.h>
+#include <bitsery/traits/core/traits.h>
+
+namespace bitsery {
+namespace ext {
+
+// TODO: There's probably a better way to do all of this
+
+/**
+ * An adapter for serializing and deserializing filesystem paths since they're
+ * not mutable.
+ */
+class BoostPath {
+   public:
+    template <typename Ser, typename Fnc>
+    void serialize(Ser& ser, const boost::filesystem::path& path, Fnc&&) const {
+        auto path_str = path.string();
+        ser.text1b(path_str, 4096);
+    }
+
+    template <typename Des, typename Fnc>
+    void deserialize(Des& des, boost::filesystem::path& path, Fnc&&) const {
+        boost::filesystem::path::string_type path_str{};
+        des.text1b(path_str, 4096);
+        path = path_str;
+    }
+};
+
+}  // namespace ext
+
+namespace traits {
+
+template <>
+struct ExtensionTraits<ext::BoostPath, boost::filesystem::path> {
+    using TValue = void;
+    static constexpr bool SupportValueOverload = false;
+    static constexpr bool SupportObjectOverload = true;
+    static constexpr bool SupportLambdaOverload = false;
+};
+
+}  // namespace traits
+}  // namespace bitsery