From 29aff8d5ab46c8d0199aa4bfa7eeff5d4fa2d7ef Mon Sep 17 00:00:00 2001 From: Zach Hilman Date: Wed, 18 Jul 2018 21:07:11 -0400 Subject: Virtual Filesystem 2: Electric Boogaloo (#676) * Virtual Filesystem * Fix delete bug and documentate * Review fixes + other stuff * Fix puyo regression --- src/core/file_sys/vfs_offset.h | 46 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 src/core/file_sys/vfs_offset.h (limited to 'src/core/file_sys/vfs_offset.h') diff --git a/src/core/file_sys/vfs_offset.h b/src/core/file_sys/vfs_offset.h new file mode 100644 index 000000000..adc615b38 --- /dev/null +++ b/src/core/file_sys/vfs_offset.h @@ -0,0 +1,46 @@ +// Copyright 2018 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include "core/file_sys/vfs.h" + +namespace FileSys { + +// An implementation of VfsFile that wraps around another VfsFile at a certain offset. +// Similar to seeking to an offset. +// If the file is writable, operations that would write past the end of the offset file will expand +// the size of this wrapper. +struct OffsetVfsFile : public VfsFile { + OffsetVfsFile(std::shared_ptr file, size_t size, size_t offset = 0, + const std::string& new_name = ""); + + std::string GetName() const override; + size_t GetSize() const override; + bool Resize(size_t new_size) override; + std::shared_ptr GetContainingDirectory() const override; + bool IsWritable() const override; + bool IsReadable() const override; + size_t Read(u8* data, size_t length, size_t offset) const override; + size_t Write(const u8* data, size_t length, size_t offset) override; + boost::optional ReadByte(size_t offset) const override; + std::vector ReadBytes(size_t size, size_t offset) const override; + std::vector ReadAllBytes() const override; + bool WriteByte(u8 data, size_t offset) override; + size_t WriteBytes(std::vector data, size_t offset) override; + + bool Rename(const std::string& name) override; + + size_t GetOffset() const; + +private: + size_t TrimToFit(size_t r_size, size_t r_offset) const; + + std::shared_ptr file; + size_t offset; + size_t size; + std::string name; +}; + +} // namespace FileSys -- cgit v1.2.3