7353cfc781
Given elements inserted into a vector are zeroed out, we can just copy MAX_LEN - 1 elements and the data will already be properly null terminated.
66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <cstddef>
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#include <iterator>
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#include <string_view>
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#include "common/common_funcs.h"
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#include "common/common_types.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// FileSys namespace
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namespace FileSys {
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enum EntryType : u8 {
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Directory = 0,
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File = 1,
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};
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// Structure of a directory entry, from
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// http://switchbrew.org/index.php?title=Filesystem_services#DirectoryEntry
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struct Entry {
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Entry(std::string_view view, EntryType entry_type, u64 entry_size)
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: type{entry_type}, file_size{entry_size} {
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const size_t copy_size = view.copy(filename, std::size(filename) - 1);
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filename[copy_size] = '\0';
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}
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char filename[0x300];
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INSERT_PADDING_BYTES(4);
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EntryType type;
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INSERT_PADDING_BYTES(3);
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u64 file_size;
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};
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static_assert(sizeof(Entry) == 0x310, "Directory Entry struct isn't exactly 0x310 bytes long!");
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static_assert(offsetof(Entry, type) == 0x304, "Wrong offset for type in Entry.");
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static_assert(offsetof(Entry, file_size) == 0x308, "Wrong offset for file_size in Entry.");
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class DirectoryBackend : NonCopyable {
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public:
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DirectoryBackend() {}
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virtual ~DirectoryBackend() {}
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/**
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* List files contained in the directory
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* @param count Number of entries to return at once in entries
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* @param entries Buffer to read data into
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* @return Number of entries listed
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*/
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virtual u64 Read(const u64 count, Entry* entries) = 0;
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/// Returns the number of entries still left to read.
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virtual u64 GetEntryCount() const = 0;
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/**
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* Close the directory
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* @return true if the directory closed correctly
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*/
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virtual bool Close() const = 0;
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};
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} // namespace FileSys
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