vfs_static: Add StaticVfsFile
Always returns the template argument byte for all reads. Doesn't support writes.
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f68e324672
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@ -63,6 +63,7 @@ add_library(core STATIC
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file_sys/vfs_offset.h
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file_sys/vfs_offset.h
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file_sys/vfs_real.cpp
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file_sys/vfs_real.cpp
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file_sys/vfs_real.h
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file_sys/vfs_real.h
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file_sys/vfs_static.h
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file_sys/vfs_vector.cpp
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file_sys/vfs_vector.cpp
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file_sys/vfs_vector.h
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file_sys/vfs_vector.h
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file_sys/xts_archive.cpp
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file_sys/xts_archive.cpp
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@ -0,0 +1,77 @@
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// 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 <memory>
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#include <string_view>
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#include "core/file_sys/vfs.h"
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namespace FileSys {
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template <u8 value>
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class StaticVfsFile : public VfsFile {
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public:
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explicit StaticVfsFile(size_t size = 0, std::string name = "", VirtualDir parent = nullptr)
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: size(size), name(name), parent(parent) {}
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std::string GetName() const override {
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return name;
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}
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size_t GetSize() const override {
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return size;
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}
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bool Resize(size_t new_size) override {
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size = new_size;
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return true;
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}
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std::shared_ptr<VfsDirectory> GetContainingDirectory() const override {
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return parent;
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}
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bool IsWritable() const override {
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return false;
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}
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bool IsReadable() const override {
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return true;
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}
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size_t Read(u8* data, size_t length, size_t offset) const override {
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const auto read = std::min(length, size - offset);
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std::fill(data, data + read, value);
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return read;
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}
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size_t Write(const u8* data, size_t length, size_t offset) override {
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return 0;
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}
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boost::optional<u8> ReadByte(size_t offset) const override {
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if (offset < size)
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return value;
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return boost::none;
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}
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std::vector<u8> ReadBytes(size_t length, size_t offset) const override {
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const auto read = std::min(length, size - offset);
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return std::vector<u8>(read, value);
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}
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bool Rename(std::string_view new_name) override {
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name = new_name;
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return true;
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}
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private:
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size_t size;
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std::string name;
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VirtualDir parent;
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};
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} // namespace FileSys
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