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49 lines
938 B
C++
49 lines
938 B
C++
// SPDX-License-Identifier: BSD-2-Clause
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// author: Max Kellermann <max.kellermann@gmail.com>
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#ifndef GZIP_OUTPUT_STREAM_HXX
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#define GZIP_OUTPUT_STREAM_HXX
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#include "io/OutputStream.hxx"
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#include <zlib.h>
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/**
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* A filter that compresses data written to it using zlib, forwarding
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* compressed data in the "gzip" format.
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*
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* Don't forget to call Flush() before destructing this object.
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*/
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class GzipOutputStream final : public OutputStream {
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OutputStream &next;
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z_stream z;
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public:
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/**
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* Construct the filter.
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*
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* Throws #ZlibError on error.
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*/
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explicit GzipOutputStream(OutputStream &_next);
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~GzipOutputStream() noexcept;
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/**
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* Throws on error.
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*/
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void SyncFlush();
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/**
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* Finish the file and write all data remaining in zlib's
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* output buffer.
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*
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* Throws on error.
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*/
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void Finish();
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/* virtual methods from class OutputStream */
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void Write(std::span<const std::byte> src) override;
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};
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#endif
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