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