1 files changed, 109 insertions, 0 deletions
diff --git a/src/core/file_sys/meta_file_system.h b/src/core/file_sys/meta_file_system.h
new file mode 100644
index 00000000..0de23d49
--- /dev/null
+++ b/src/core/file_sys/meta_file_system.h
@@ -0,0 +1,109 @@
+// Copyright (c) 2012- PPSSPP Project.
+
+// 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, version 2.0 or later versions.
+
+// 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 2.0 for more details.
+
+// A copy of the GPL 2.0 should have been included with the program.
+// If not, see http://www.gnu.org/licenses/
+
+// Official git repository and contact information can be found at
+// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
+
+#pragma once
+
+#include "std_mutex.h"
+#include "file_sys.h"
+
+class MetaFileSystem : public IHandleAllocator, public IFileSystem
+{
+private:
+	u32 current;
+	struct MountPoint
+	{
+		std::string prefix;
+		IFileSystem *system;
+
+		bool operator == (const MountPoint &other) const
+		{
+			return prefix == other.prefix && system == other.system;
+		}
+	};
+	std::vector<MountPoint> fileSystems;
+
+	typedef std::map<int, std::string> currentDir_t;
+	currentDir_t currentDir;
+
+	std::string startingDirectory;
+	int lastOpenError;
+	std::recursive_mutex lock;
+
+public:
+	MetaFileSystem()
+	{
+		current = 6;  // what?
+	}
+
+	void Mount(std::string prefix, IFileSystem *system);
+	void Unmount(std::string prefix, IFileSystem *system);
+
+	void ThreadEnded(int threadID);
+
+	void Shutdown();
+
+	u32 GetNewHandle() {return current++;}
+	void FreeHandle(u32 handle) {}
+
+	virtual void DoState(PointerWrap &p);
+
+	IFileSystem *GetHandleOwner(u32 handle);
+	bool MapFilePath(const std::string &inpath, std::string &outpath, MountPoint **system);
+
+	inline bool MapFilePath(const std::string &_inpath, std::string &outpath, IFileSystem **system)
+	{
+		MountPoint *mountPoint;
+		if (MapFilePath(_inpath, outpath, &mountPoint))
+		{
+			*system = mountPoint->system;
+			return true;
+		}
+
+		return false;
+	}
+
+	// Only possible if a file system is a DirectoryFileSystem or similar.
+	bool GetHostPath(const std::string &inpath, std::string &outpath);
+	
+	std::vector<FileInfo> GetDirListing(std::string path);
+	u32      OpenFile(std::string filename, FileAccess access, const char *devicename = NULL);
+	u32      OpenWithError(int &error, std::string filename, FileAccess access, const char *devicename = NULL);
+	void     CloseFile(u32 handle);
+	size_t   ReadFile(u32 handle, u8 *pointer, s64 size);
+	size_t   WriteFile(u32 handle, const u8 *pointer, s64 size);
+	size_t   SeekFile(u32 handle, s32 position, FileMove type);
+	FileInfo GetFileInfo(std::string filename);
+	bool     OwnsHandle(u32 handle) {return false;}
+	inline size_t GetSeekPos(u32 handle)
+	{
+		return SeekFile(handle, 0, FILEMOVE_CURRENT);
+	}
+
+	virtual int ChDir(const std::string &dir);
+
+	virtual bool MkDir(const std::string &dirname);
+	virtual bool RmDir(const std::string &dirname);
+	virtual int  RenameFile(const std::string &from, const std::string &to);
+	virtual bool RemoveFile(const std::string &filename);
+
+	// TODO: void IoCtl(...)
+
+	void SetStartingDirectory(const std::string &dir) {
+		std::lock_guard<std::mutex> guard(lock);
+		startingDirectory = dir;
+	}
+};