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LibCompress: Implement a Zlib compressor

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This commit is contained in:
Karol Kosek 2022-06-17 09:26:35 +02:00 • committed by Linus Groh
parent 42abe1df77
commit 0de0de3536
2 changed files with 105 additions and 0 deletions
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23
Userland/Libraries/LibCompress/Zlib.h
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@ -6,10 +6,13 @@
#pragma once
#include <AK/BitStream.h>
#include <AK/ByteBuffer.h>
#include <AK/Optional.h>
#include <AK/OwnPtr.h>
#include <AK/Span.h>
#include <AK/Types.h>
#include <LibCrypto/Checksum/Adler32.h>
namespace Compress {
@ -57,4 +60,24 @@ private:
ReadonlyBytes m_data_bytes;
};
class ZlibCompressor : public OutputStream {
public:
ZlibCompressor(OutputStream&, ZlibCompressionLevel = ZlibCompressionLevel::Default);
~ZlibCompressor();
size_t write(ReadonlyBytes) override;
bool write_or_error(ReadonlyBytes) override;
void finish();
static Optional<ByteBuffer> compress_all(ReadonlyBytes bytes, ZlibCompressionLevel = ZlibCompressionLevel::Default);
private:
void write_header(ZlibCompressionMethod, ZlibCompressionLevel);
bool m_finished { false };
OutputBitStream m_output_stream;
OwnPtr<OutputStream> m_compressor;
Crypto::Checksum::Adler32 m_adler32_checksum;
};
}