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diff --git a/libnbtplusplus/include/io/izlibstream.h b/libnbtplusplus/include/io/izlibstream.h
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+/*
+ * SPDX-FileCopyrightText: 2013, 2015 ljfa-ag <ljfa-ag@web.de>
+ *
+ * SPDX-License-Identifier: LGPL-3.0-or-later
+ */
+
+/*
+ * 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 IZLIBSTREAM_H_INCLUDED
+#define IZLIBSTREAM_H_INCLUDED
+
+#include "io/zlib_streambuf.h"
+#include <istream>
+#include <zlib.h>
+
+namespace zlib
+{
+
+ /**
+ * @brief Stream buffer used by zlib::izlibstream
+ * @sa izlibstream
+ */
+ class NBT_EXPORT inflate_streambuf : public zlib_streambuf
+ {
+ public:
+ /**
+ * @param input the istream to wrap
+ * @param bufsize the size of the internal buffers
+ * @param window_bits the base two logarithm of the maximum window size
+ * that zlib will use. This parameter also determines which type of
+ * input to expect. The default argument will autodetect between zlib
+ * and gzip data. Refer to the zlib documentation of inflateInit2 for
+ * more details.
+ *
+ * @throw zlib_error if zlib encounters a problem during initialization
+ */
+ explicit inflate_streambuf(std::istream& input, size_t bufsize = 32768,
+ int window_bits = 32 + 15);
+ ~inflate_streambuf() noexcept;
+
+ ///@return the wrapped istream
+ std::istream& get_istr() const
+ {
+ return is;
+ }
+
+ private:
+ std::istream& is;
+ bool stream_end;
+
+ int_type underflow() override;
+ };
+
+ /**
+ * @brief An istream adapter that decompresses data using zlib
+ *
+ * This istream wraps another istream. The izlibstream will read compressed
+ * data from the wrapped istream and inflate (decompress) it with zlib.
+ *
+ * @note If you want to read more data from the wrapped istream after the
+ * end of the compressed data, then it must allow seeking. It is unavoidable
+ * for the izlibstream to consume more data after the compressed data. It
+ * will automatically attempt to seek the wrapped istream back to the point
+ * after the end of the compressed data.
+ * @sa inflate_streambuf
+ */
+ class NBT_EXPORT izlibstream : public std::istream
+ {
+ public:
+ /**
+ * @param input the istream to wrap
+ * @param bufsize the size of the internal buffers
+ */
+ explicit izlibstream(std::istream& input, size_t bufsize = 32768)
+ : std::istream(&buf), buf(input, bufsize)
+ {
+ }
+ ///@return the wrapped istream
+ std::istream& get_istr() const
+ {
+ return buf.get_istr();
+ }
+
+ private:
+ inflate_streambuf buf;
+ };
+
+} // namespace zlib
+
+#endif // IZLIBSTREAM_H_INCLUDED