// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "common/swap.h"
#include "core/hle/result.h"
namespace FileSys {
class FileBackend;
class DirectoryBackend;
// Path string type
enum LowPathType : u32 {
Invalid = 0,
Empty = 1,
Binary = 2,
Char = 3,
Wchar = 4,
};
union Mode {
u32 hex;
BitField<0, 1, u32> read_flag;
BitField<1, 1, u32> write_flag;
BitField<2, 1, u32> create_flag;
};
class Path {
public:
Path() : type(Invalid) {}
Path(const char* path) : type(Char), string(path) {}
Path(std::vector<u8> binary_data) : type(Binary), binary(std::move(binary_data)) {}
Path(LowPathType type, u32 size, u32 pointer);
LowPathType GetType() const {
return type;
}
/**
* Gets the string representation of the path for debugging
* @return String representation of the path for debugging
*/
std::string DebugStr() const;
std::string AsString() const;
std::u16string AsU16Str() const;
std::vector<u8> AsBinary() const;
private:
LowPathType type;
std::vector<u8> binary;
std::string string;
std::u16string u16str;
};
/// Parameters of the archive, as specified in the Create or Format call.
struct ArchiveFormatInfo {
u32_le total_size; ///< The pre-defined size of the archive.
u32_le number_directories; ///< The pre-defined number of directories in the archive.
u32_le number_files; ///< The pre-defined number of files in the archive.
u8 duplicate_data; ///< Whether the archive should duplicate the data.
};
static_assert(std::is_pod<ArchiveFormatInfo>::value, "ArchiveFormatInfo is not POD");
class ArchiveBackend : NonCopyable {
public:
virtual ~ArchiveBackend() {}
/**
* Get a descriptive name for the archive (e.g. "RomFS", "SaveData", etc.)
*/
virtual std::string GetName() const = 0;
/**
* Open a file specified by its path, using the specified mode
* @param path Path relative to the archive
* @param mode Mode to open the file with
* @return Opened file, or error code
*/
virtual ResultVal<std::unique_ptr<FileBackend>> OpenFile(const Path& path,
const Mode mode) const = 0;
/**
* Delete a file specified by its path
* @param path Path relative to the archive
* @return Result of the operation
*/
virtual ResultCode DeleteFile(const Path& path) const = 0;
/**
* Rename a File specified by its path
* @param src_path Source path relative to the archive
* @param dest_path Destination path relative to the archive
* @return Whether rename succeeded
*/
virtual bool RenameFile(const Path& src_path, const Path& dest_path) const = 0;
/**
* Delete a directory specified by its path
* @param path Path relative to the archive
* @return Whether the directory could be deleted
*/
virtual bool DeleteDirectory(const Path& path) const = 0;
/**
* Create a file specified by its path
* @param path Path relative to the Archive
* @param size The size of the new file, filled with zeroes
* @return File creation result code
*/
virtual ResultCode CreateFile(const Path& path, u64 size) const = 0;
/**
* Create a directory specified by its path
* @param path Path relative to the archive
* @return Whether the directory could be created
*/
virtual bool CreateDirectory(const Path& path) const = 0;
/**
* Rename a Directory specified by its path
* @param src_path Source path relative to the archive
* @param dest_path Destination path relative to the archive
* @return Whether rename succeeded
*/
virtual bool RenameDirectory(const Path& src_path, const Path& dest_path) const = 0;
/**
* Open a directory specified by its path
* @param path Path relative to the archive
* @return Opened directory, or nullptr
*/
virtual std::unique_ptr<DirectoryBackend> OpenDirectory(const Path& path) const = 0;
/**
* Get the free space
* @return The number of free bytes in the archive
*/
virtual u64 GetFreeBytes() const = 0;
};
class ArchiveFactory : NonCopyable {
public:
virtual ~ArchiveFactory() {}
/**
* Get a descriptive name for the archive (e.g. "RomFS", "SaveData", etc.)
*/
virtual std::string GetName() const = 0;
/**
* Tries to open the archive of this type with the specified path
* @param path Path to the archive
* @return An ArchiveBackend corresponding operating specified archive path.
*/
virtual ResultVal<std::unique_ptr<ArchiveBackend>> Open(const Path& path) = 0;
/**
* Deletes the archive contents and then re-creates the base folder
* @param path Path to the archive
* @param format_info Format information for the new archive
* @return ResultCode of the operation, 0 on success
*/
virtual ResultCode Format(const Path& path, const FileSys::ArchiveFormatInfo& format_info) = 0;
/**
* Retrieves the format info about the archive with the specified path
* @param path Path to the archive
* @return Format information about the archive or error code
*/
virtual ResultVal<ArchiveFormatInfo> GetFormatInfo(const Path& path) const = 0;
};
} // namespace FileSys
