Move VirtualDiscFileSystem to its own file.

Core/FileSystems/VirtualDiscFileSystem.h

@@ -0,0 +1,79 @@
+// 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
+
+// TODO: Remove the Windows-specific code, FILE is fine there too.
+
+#include <map>
+
+#include "Core/FileSystems/FileSystem.h"
+#include "Core/FileSystems/DirectoryFileSystem.h"
+
+class VirtualDiscFileSystem: public IFileSystem
+{
+public:
+	VirtualDiscFileSystem(IHandleAllocator *_hAlloc, std::string _basePath);
+	~VirtualDiscFileSystem();
+
+	void DoState(PointerWrap &p);
+	u32      OpenFile(std::string filename, FileAccess access, const char *devicename=NULL);
+	size_t   SeekFile(u32 handle, s32 position, FileMove type);
+	size_t   ReadFile(u32 handle, u8 *pointer, s64 size);
+	void     CloseFile(u32 handle);
+	PSPFileInfo GetFileInfo(std::string filename);
+	bool     OwnsHandle(u32 handle);
+	bool GetHostPath(const std::string &inpath, std::string &outpath);
+	std::vector<PSPFileInfo> GetDirListing(std::string path);
+
+	// unsupported operations
+	size_t  WriteFile(u32 handle, const u8 *pointer, s64 size);
+	bool MkDir(const std::string &dirname);
+	bool RmDir(const std::string &dirname);
+	int  RenameFile(const std::string &from, const std::string &to);
+	bool RemoveFile(const std::string &filename);
+
+private:
+	int getFileListIndex(std::string& fileName);
+	int getFileListIndex(u32 accessBlock, u32 accessSize);
+	std::string GetLocalPath(std::string localpath);
+
+	typedef enum { VFILETYPE_NORMAL, VFILETYPE_LBN, VFILETYPE_ISO } VirtualFileType;
+
+	struct OpenFileEntry {
+		DirectoryFileHandle hFile;
+		VirtualFileType type;
+		u32 fileIndex;
+		u32 curOffset;
+		u32 startOffset;	// only used by lbn files
+		u32 size;			// only used by lbn files
+	};
+
+	typedef std::map<u32, OpenFileEntry> EntryMap;
+	EntryMap entries;
+	IHandleAllocator *hAlloc;
+	std::string basePath;
+
+	typedef struct {
+		std::string fileName;
+		u32 firstBlock;
+		u32 totalSize;
+	} FileListEntry;
+
+	std::vector<FileListEntry> fileList;
+	u32 currentBlockIndex;
+};