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openmw/components/bsa/memorystream.hpp

58 lines
1.7 KiB
C++

/*
OpenMW - The completely unofficial reimplementation of Morrowind
Copyright (C) 2008-2010 Nicolay Korslund
Email: < korslund@gmail.com >
WWW: http://openmw.sourceforge.net/
This file (memorystream.hpp) is part of the OpenMW package.
OpenMW is distributed as free software: you can redistribute it
and/or modify it under the terms of the GNU General Public License
version 3, as published by the Free Software Foundation.
This program 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
version 3 along with this program. If not, see
http://www.gnu.org/licenses/ .
Compressed BSA upgrade added by Azdul 2019
*/
#ifndef BSA_MEMORY_STREAM_H
#define BSA_MEMORY_STREAM_H
#include <components/files/memorystream.hpp>
#include <istream>
#include <vector>
namespace Bsa
{
/**
Class replaces Ogre memory streams without introducing any new external dependencies
beyond standard library.
Allows to pass memory buffer as Files::IStreamPtr.
Memory buffer is freed once the class instance is destroyed.
*/
class MemoryInputStream : private std::vector<char>, public Files::MemBuf, public std::istream
{
public:
explicit MemoryInputStream(size_t bufferSize)
: std::vector<char>(bufferSize)
, Files::MemBuf(this->data(), this->size())
, std::istream(static_cast<std::streambuf*>(this))
{
}
char* getRawData() { return this->data(); }
};
}
#endif