yuzu/src/core/file_sys/vfs_offset.cpp
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

98 lines
2.7 KiB
C++

// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <algorithm>
#include <utility>
#include "core/file_sys/vfs_offset.h"
namespace FileSys {
OffsetVfsFile::OffsetVfsFile(VirtualFile file_, std::size_t size_, std::size_t offset_,
std::string name_, VirtualDir parent_)
: file(file_), offset(offset_), size(size_), name(std::move(name_)),
parent(parent_ == nullptr ? file->GetContainingDirectory() : std::move(parent_)) {}
OffsetVfsFile::~OffsetVfsFile() = default;
std::string OffsetVfsFile::GetName() const {
return name.empty() ? file->GetName() : name;
}
std::size_t OffsetVfsFile::GetSize() const {
return size;
}
bool OffsetVfsFile::Resize(std::size_t new_size) {
if (offset + new_size < file->GetSize()) {
size = new_size;
} else {
auto res = file->Resize(offset + new_size);
if (!res)
return false;
size = new_size;
}
return true;
}
VirtualDir OffsetVfsFile::GetContainingDirectory() const {
return parent;
}
bool OffsetVfsFile::IsWritable() const {
return file->IsWritable();
}
bool OffsetVfsFile::IsReadable() const {
return file->IsReadable();
}
std::size_t OffsetVfsFile::Read(u8* data, std::size_t length, std::size_t r_offset) const {
return file->Read(data, TrimToFit(length, r_offset), offset + r_offset);
}
std::size_t OffsetVfsFile::Write(const u8* data, std::size_t length, std::size_t r_offset) {
return file->Write(data, TrimToFit(length, r_offset), offset + r_offset);
}
std::optional<u8> OffsetVfsFile::ReadByte(std::size_t r_offset) const {
if (r_offset >= size) {
return std::nullopt;
}
return file->ReadByte(offset + r_offset);
}
std::vector<u8> OffsetVfsFile::ReadBytes(std::size_t r_size, std::size_t r_offset) const {
return file->ReadBytes(TrimToFit(r_size, r_offset), offset + r_offset);
}
std::vector<u8> OffsetVfsFile::ReadAllBytes() const {
return file->ReadBytes(size, offset);
}
bool OffsetVfsFile::WriteByte(u8 data, std::size_t r_offset) {
if (r_offset < size)
return file->WriteByte(data, offset + r_offset);
return false;
}
std::size_t OffsetVfsFile::WriteBytes(const std::vector<u8>& data, std::size_t r_offset) {
return file->Write(data.data(), TrimToFit(data.size(), r_offset), offset + r_offset);
}
bool OffsetVfsFile::Rename(std::string_view new_name) {
return file->Rename(new_name);
}
std::size_t OffsetVfsFile::GetOffset() const {
return offset;
}
std::size_t OffsetVfsFile::TrimToFit(std::size_t r_size, std::size_t r_offset) const {
return std::clamp(r_size, std::size_t{0}, size - r_offset);
}
} // namespace FileSys