yuzu/src/core/file_sys/vfs_static.h
Morph 99ceb03a1c general: Convert source file copyright comments over to SPDX
This formats all copyright comments according to SPDX formatting guidelines.
Additionally, this resolves the remaining GPLv2 only licensed files by relicensing them to GPLv2.0-or-later.
2022-04-23 05:55:32 -04:00

80 lines
1.9 KiB
C++

// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <algorithm>
#include <memory>
#include <string_view>
#include "core/file_sys/vfs.h"
namespace FileSys {
class StaticVfsFile : public VfsFile {
public:
explicit StaticVfsFile(u8 value_, std::size_t size_ = 0, std::string name_ = "",
VirtualDir parent_ = nullptr)
: value{value_}, size{size_}, name{std::move(name_)}, parent{std::move(parent_)} {}
std::string GetName() const override {
return name;
}
std::size_t GetSize() const override {
return size;
}
bool Resize(std::size_t new_size) override {
size = new_size;
return true;
}
VirtualDir GetContainingDirectory() const override {
return parent;
}
bool IsWritable() const override {
return false;
}
bool IsReadable() const override {
return true;
}
std::size_t Read(u8* data, std::size_t length, std::size_t offset) const override {
const auto read = std::min(length, size - offset);
std::fill(data, data + read, value);
return read;
}
std::size_t Write(const u8* data, std::size_t length, std::size_t offset) override {
return 0;
}
std::optional<u8> ReadByte(std::size_t offset) const override {
if (offset >= size) {
return std::nullopt;
}
return value;
}
std::vector<u8> ReadBytes(std::size_t length, std::size_t offset) const override {
const auto read = std::min(length, size - offset);
return std::vector<u8>(read, value);
}
bool Rename(std::string_view new_name) override {
name = new_name;
return true;
}
private:
u8 value;
std::size_t size;
std::string name;
VirtualDir parent;
};
} // namespace FileSys