mirror of
https://github.com/libretro/ppsspp.git
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127 lines
4.1 KiB
C++
127 lines
4.1 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include <string>
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#include <vector>
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#include "base/mutex.h"
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#include "Core/FileSystems/FileSystem.h"
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class MetaFileSystem : public IHandleAllocator, public IFileSystem {
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private:
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s32 current;
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struct MountPoint {
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std::string prefix;
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IFileSystem *system;
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bool operator == (const MountPoint &other) const {
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return prefix == other.prefix && system == other.system;
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}
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};
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std::vector<MountPoint> fileSystems;
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typedef std::map<int, std::string> currentDir_t;
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currentDir_t currentDir;
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std::string startingDirectory;
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int lastOpenError;
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recursive_mutex lock;
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public:
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MetaFileSystem() {
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current = 6; // what?
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}
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void Mount(std::string prefix, IFileSystem *system);
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void Unmount(std::string prefix, IFileSystem *system);
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void Remount(IFileSystem *oldSystem, IFileSystem *newSystem);
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IFileSystem *GetSystem(const std::string &prefix);
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IFileSystem *GetSystemFromFilename(const std::string &filename);
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void ThreadEnded(int threadID);
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void Shutdown();
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u32 GetNewHandle() override {
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u32 res = current++;
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if (current < 0) {
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current = 0;
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}
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return res;
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}
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void FreeHandle(u32 handle) override {}
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void DoState(PointerWrap &p) override;
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IFileSystem *GetHandleOwner(u32 handle);
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bool MapFilePath(const std::string &inpath, std::string &outpath, MountPoint **system);
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inline bool MapFilePath(const std::string &_inpath, std::string &outpath, IFileSystem **system) {
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MountPoint *mountPoint;
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if (MapFilePath(_inpath, outpath, &mountPoint)) {
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*system = mountPoint->system;
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return true;
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}
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return false;
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}
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std::string NormalizePrefix(std::string prefix) const;
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// Only possible if a file system is a DirectoryFileSystem or similar.
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bool GetHostPath(const std::string &inpath, std::string &outpath) override;
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std::vector<PSPFileInfo> GetDirListing(std::string path) override;
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u32 OpenFile(std::string filename, FileAccess access, const char *devicename = NULL) override;
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u32 OpenWithError(int &error, std::string filename, FileAccess access, const char *devicename = NULL);
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void CloseFile(u32 handle) override;
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size_t ReadFile(u32 handle, u8 *pointer, s64 size) override;
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size_t ReadFile(u32 handle, u8 *pointer, s64 size, int &usec) override;
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size_t WriteFile(u32 handle, const u8 *pointer, s64 size) override;
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size_t WriteFile(u32 handle, const u8 *pointer, s64 size, int &usec) override;
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size_t SeekFile(u32 handle, s32 position, FileMove type) override;
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PSPFileInfo GetFileInfo(std::string filename) override;
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bool OwnsHandle(u32 handle) override { return false; }
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inline size_t GetSeekPos(u32 handle)
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{
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return SeekFile(handle, 0, FILEMOVE_CURRENT);
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}
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virtual int ChDir(const std::string &dir);
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bool MkDir(const std::string &dirname) override;
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bool RmDir(const std::string &dirname) override;
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int RenameFile(const std::string &from, const std::string &to) override;
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bool RemoveFile(const std::string &filename) override;
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int Ioctl(u32 handle, u32 cmd, u32 indataPtr, u32 inlen, u32 outdataPtr, u32 outlen, int &usec) override;
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int DevType(u32 handle) override;
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int Flags() override { return 0; }
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u64 FreeSpace(const std::string &path) override;
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// Convenience helper - returns < 0 on failure.
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int ReadEntireFile(const std::string &filename, std::vector<u8> &data);
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void SetStartingDirectory(const std::string &dir) {
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lock_guard guard(lock);
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startingDirectory = dir;
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}
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};
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