From 42114e1df49ff65f09865b53395e01858ca4929e Mon Sep 17 00:00:00 2001 From: Zach Hilman Date: Thu, 9 Aug 2018 20:46:41 -0400 Subject: vfs: Add ConcatenatedVfsFile --- src/core/file_sys/vfs_concat.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 src/core/file_sys/vfs_concat.h (limited to 'src/core/file_sys/vfs_concat.h') diff --git a/src/core/file_sys/vfs_concat.h b/src/core/file_sys/vfs_concat.h new file mode 100644 index 000000000..d319c5786 --- /dev/null +++ b/src/core/file_sys/vfs_concat.h @@ -0,0 +1,41 @@ +// Copyright 2018 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include +#include +#include +#include "core/file_sys/vfs.h" + +namespace FileSys { + +// Wrapper function to allow for more efficient handling of files.size() == 0, 1 cases. +VirtualFile ConcatenateFiles(std::vector files, std::string_view name = ""); + +// Class that wraps multiple vfs files and concatenates them, making reads seamless. Currently +// read-only. +class ConcatenatedVfsFile : public VfsFile { + friend VirtualFile ConcatenateFiles(std::vector files, std::string_view name); + + ConcatenatedVfsFile(std::vector files, std::string_view name); + +public: + 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; + bool Rename(std::string_view name) override; + +private: + // Maps starting offset to file -- more efficient. + boost::container::flat_map files; + std::string name; +}; + +} // namespace FileSys -- cgit v1.2.3