intial commit

source/mijin/virtual_filesystem/stacked.hpp

@@ -0,0 +1,52 @@
+
+#pragma once
+
+#if !defined(MIJIN_VIRTUAL_FILESYSTEM_STACKED_HPP_INCLUDED)
+#define MIJIN_VIRTUAL_FILESYSTEM_STACKED_HPP_INCLUDED 1
+
+#include <memory>
+#include <vector>
+#include "./filesystem.hpp"
+
+namespace mijin
+{
+
+//
+// public defines
+//
+
+//
+// public constants
+//
+
+//
+// public types
+//
+
+class StackedFileSystemAdapter : public FileSystemAdapter
+{
+private:
+    std::vector<std::unique_ptr<FileSystemAdapter>> adapters_;
+public:
+    std::vector<fs::path> getRoots() override;
+    fs::path getHomeFolder() override;
+    std::vector<FileInfo> listFiles(const fs::path& folder) override;
+    FileInfo getFileInfo(const fs::path& file) override;
+    StreamError open(const fs::path& path, FileOpenMode mode, std::unique_ptr<Stream>& outStream) override;
+
+    inline void addAdapter(std::unique_ptr<FileSystemAdapter>&& adapter) {
+        adapters_.push_back(std::move(adapter));
+    }
+    template<typename TAdapter, typename... TArgs>
+    inline void emplaceAdapter(TArgs&&... args) {
+        addAdapter(std::make_unique<TAdapter>(std::forward<TArgs>(args)...));
+    }
+};
+
+//
+// public functions
+//
+
+} // namespace mijin
+
+#endif // !defined(MIJIN_VIRTUAL_FILESYSTEM_STACKED_HPP_INCLUDED)