138 lines
4 KiB
C++
138 lines
4 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 "common/common.h"
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#include "common/chunk_file.h"
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enum FileAccess {
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FILEACCESS_NONE=0,
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FILEACCESS_READ=1,
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FILEACCESS_WRITE=2,
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FILEACCESS_APPEND=4,
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FILEACCESS_CREATE=8
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};
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enum FileMove {
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FILEMOVE_BEGIN=0,
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FILEMOVE_CURRENT=1,
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FILEMOVE_END=2
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};
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enum FileType {
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FILETYPE_NORMAL=1,
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FILETYPE_DIRECTORY=2
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};
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class IHandleAllocator {
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public:
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virtual ~IHandleAllocator() {}
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virtual u32 GetNewHandle() = 0;
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virtual void FreeHandle(u32 handle) = 0;
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};
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class SequentialHandleAllocator : public IHandleAllocator {
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public:
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SequentialHandleAllocator() : handle_(1) {}
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virtual u32 GetNewHandle() { return handle_++; }
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virtual void FreeHandle(u32 handle) {}
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private:
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int handle_;
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};
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struct FileInfo {
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FileInfo()
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: size(0), access(0), exists(false), type(FILETYPE_NORMAL), isOnSectorSystem(false), startSector(0), numSectors(0) {}
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void DoState(PointerWrap &p) {
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auto s = p.Section("FileInfo", 1);
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if (!s)
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return;
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p.Do(name);
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p.Do(size);
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p.Do(access);
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p.Do(exists);
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p.Do(type);
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p.Do(atime);
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p.Do(ctime);
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p.Do(mtime);
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p.Do(isOnSectorSystem);
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p.Do(startSector);
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p.Do(numSectors);
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p.Do(sectorSize);
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}
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std::string name;
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s64 size;
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u32 access; //unix 777
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bool exists;
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FileType type;
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tm atime;
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tm ctime;
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tm mtime;
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bool isOnSectorSystem;
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u32 startSector;
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u32 numSectors;
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u32 sectorSize;
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};
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class IFileSystem {
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public:
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virtual ~IFileSystem() {}
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virtual void DoState(PointerWrap &p) = 0;
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virtual std::vector<FileInfo> GetDirListing(std::string path) = 0;
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virtual u32 OpenFile(std::string filename, FileAccess access, const char *devicename=NULL) = 0;
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virtual void CloseFile(u32 handle) = 0;
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virtual size_t ReadFile(u32 handle, u8 *pointer, s64 size) = 0;
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virtual size_t WriteFile(u32 handle, const u8 *pointer, s64 size) = 0;
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virtual size_t SeekFile(u32 handle, s32 position, FileMove type) = 0;
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virtual FileInfo GetFileInfo(std::string filename) = 0;
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virtual bool OwnsHandle(u32 handle) = 0;
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virtual bool MkDir(const std::string &dirname) = 0;
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virtual bool RmDir(const std::string &dirname) = 0;
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virtual int RenameFile(const std::string &from, const std::string &to) = 0;
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virtual bool RemoveFile(const std::string &filename) = 0;
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virtual bool GetHostPath(const std::string &inpath, std::string &outpath) = 0;
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};
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class EmptyFileSystem : public IFileSystem {
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public:
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virtual void DoState(PointerWrap &p) {}
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std::vector<FileInfo> GetDirListing(std::string path) {std::vector<FileInfo> vec; return vec;}
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u32 OpenFile(std::string filename, FileAccess access, const char *devicename=NULL) {return 0;}
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void CloseFile(u32 handle) {}
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size_t ReadFile(u32 handle, u8 *pointer, s64 size) {return 0;}
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size_t WriteFile(u32 handle, const u8 *pointer, s64 size) {return 0;}
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size_t SeekFile(u32 handle, s32 position, FileMove type) {return 0;}
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FileInfo GetFileInfo(std::string filename) {FileInfo f; return f;}
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bool OwnsHandle(u32 handle) {return false;}
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virtual bool MkDir(const std::string &dirname) {return false;}
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virtual bool RmDir(const std::string &dirname) {return false;}
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virtual int RenameFile(const std::string &from, const std::string &to) {return -1;}
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virtual bool RemoveFile(const std::string &filename) {return false;}
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virtual bool GetHostPath(const std::string &inpath, std::string &outpath) {return false;}
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};
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