flycast/core/archive/rzip.h

44 lines
1.2 KiB
C++

/*
Copyright 2020 flyinghead
This file is part of Flycast.
Flycast is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
Flycast is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Flycast. If not, see <https://www.gnu.org/licenses/>.
*/
// Implementation of the RZIP stream format as defined by libretro
// https://github.com/libretro/libretro-common/blob/master/include/streams/rzip_stream.h
#pragma once
#include "types.h"
class RZipFile
{
public:
~RZipFile() { Close(); }
bool Open(const std::string& path, bool write);
void Close();
size_t Size() const { return size; }
size_t Read(void *data, size_t length);
size_t Write(const void *data, size_t length);
private:
FILE *file = nullptr;
u64 size = 0;
u32 maxChunkSize = 0;
u8 *chunk = nullptr;
u32 chunkSize = 0;
u32 chunkIndex = 0;
};