mirror of
https://github.com/MeexReay/minceraftOS.git
synced 2025-06-25 19:12:59 +03:00
96 lines
3.0 KiB
C++
96 lines
3.0 KiB
C++
/*
|
|
* libnbt++ - A library for the Minecraft Named Binary Tag format.
|
|
* Copyright (C) 2013, 2015 ljfa-ag
|
|
*
|
|
* This file is part of libnbt++.
|
|
*
|
|
* libnbt++ is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* libnbt++ 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 Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with libnbt++. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef OZLIBSTREAM_H_INCLUDED
|
|
#define OZLIBSTREAM_H_INCLUDED
|
|
|
|
#include "io/zlib_streambuf.h"
|
|
#include <ostream>
|
|
#include <zlib.h>
|
|
|
|
namespace zlib
|
|
{
|
|
|
|
/**
|
|
* @brief Stream buffer used by zlib::ozlibstream
|
|
* @sa ozlibstream
|
|
*/
|
|
class NBT_EXPORT deflate_streambuf : public zlib_streambuf
|
|
{
|
|
public:
|
|
/**
|
|
* @param output the ostream to wrap
|
|
* @param bufsize the size of the internal buffers
|
|
* @param level the compression level, ranges from 0 to 9, or -1 for default
|
|
*
|
|
* Refer to the zlib documentation of deflateInit2 for details about the arguments.
|
|
*
|
|
* @throw zlib_error if zlib encounters a problem during initialization
|
|
*/
|
|
explicit deflate_streambuf(std::ostream& output, size_t bufsize = 32768, int level = Z_DEFAULT_COMPRESSION, int window_bits = 15, int mem_level = 8, int strategy = Z_DEFAULT_STRATEGY);
|
|
~deflate_streambuf() noexcept;
|
|
|
|
///@return the wrapped ostream
|
|
std::ostream& get_ostr() const { return os; }
|
|
|
|
///Finishes compression and writes all pending data to the output
|
|
void close();
|
|
private:
|
|
std::ostream& os;
|
|
|
|
void deflate_chunk(int flush = Z_NO_FLUSH);
|
|
|
|
int_type overflow(int_type ch) override;
|
|
int sync() override;
|
|
};
|
|
|
|
/**
|
|
* @brief An ostream adapter that compresses data using zlib
|
|
*
|
|
* This ostream wraps another ostream. Data written to an ozlibstream will be
|
|
* deflated (compressed) with zlib and written to the wrapped ostream.
|
|
*
|
|
* @sa deflate_streambuf
|
|
*/
|
|
class NBT_EXPORT ozlibstream : public std::ostream
|
|
{
|
|
public:
|
|
/**
|
|
* @param output the ostream to wrap
|
|
* @param level the compression level, ranges from 0 to 9, or -1 for default
|
|
* @param gzip if true, the output will be in gzip format rather than zlib
|
|
* @param bufsize the size of the internal buffers
|
|
*/
|
|
explicit ozlibstream(std::ostream& output, int level = Z_DEFAULT_COMPRESSION, bool gzip = false, size_t bufsize = 32768):
|
|
std::ostream(&buf), buf(output, bufsize, level, 15 + (gzip ? 16 : 0))
|
|
{}
|
|
|
|
///@return the wrapped ostream
|
|
std::ostream& get_ostr() const { return buf.get_ostr(); }
|
|
|
|
///Finishes compression and writes all pending data to the output
|
|
void close();
|
|
private:
|
|
deflate_streambuf buf;
|
|
};
|
|
|
|
}
|
|
|
|
#endif // OZLIBSTREAM_H_INCLUDED
|