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// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <iterator>
#include <string_view>
#include "common/common_funcs.h"
#include "common/common_types.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// FileSys namespace
namespace FileSys {
enum EntryType : u8 {
Directory = 0,
File = 1,
};
// Structure of a directory entry, from
// http://switchbrew.org/index.php?title=Filesystem_services#DirectoryEntry
struct Entry {
Entry(std::string_view view, EntryType entry_type, u64 entry_size)
: type{entry_type}, file_size{entry_size} {
const size_t copy_size = view.copy(filename, std::size(filename) - 1);
filename[copy_size] = '\0';
}
char filename[0x300];
INSERT_PADDING_BYTES(4);
EntryType type;
INSERT_PADDING_BYTES(3);
u64 file_size;
};
static_assert(sizeof(Entry) == 0x310, "Directory Entry struct isn't exactly 0x310 bytes long!");
static_assert(offsetof(Entry, type) == 0x304, "Wrong offset for type in Entry.");
static_assert(offsetof(Entry, file_size) == 0x308, "Wrong offset for file_size in Entry.");
class DirectoryBackend : NonCopyable {
public:
DirectoryBackend() {}
virtual ~DirectoryBackend() {}
/**
* List files contained in the directory
* @param count Number of entries to return at once in entries
* @param entries Buffer to read data into
* @return Number of entries listed
*/
virtual u64 Read(const u64 count, Entry* entries) = 0;
/// Returns the number of entries still left to read.
virtual u64 GetEntryCount() const = 0;
/**
* Close the directory
* @return true if the directory closed correctly
*/
virtual bool Close() const = 0;
};
} // namespace FileSys
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