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f4c3d96eff
This change allows users pass compression level that was not listed in the enum. Also, I think using different values than zlib's compression levels was just confusing. Differential Revision: https://reviews.llvm.org/D50196 llvm-svn: 338939
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
//===-- llvm/Support/Compression.h ---Compression----------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains basic functions for compression/uncompression.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_COMPRESSION_H
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#define LLVM_SUPPORT_COMPRESSION_H
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#include "llvm/Support/DataTypes.h"
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namespace llvm {
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template <typename T> class SmallVectorImpl;
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class Error;
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class StringRef;
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namespace zlib {
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static constexpr int NoCompression = 0;
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static constexpr int BestSpeedCompression = 1;
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static constexpr int DefaultCompression = 6;
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static constexpr int BestSizeCompression = 9;
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bool isAvailable();
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Error compress(StringRef InputBuffer, SmallVectorImpl<char> &CompressedBuffer,
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int Level = DefaultCompression);
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Error uncompress(StringRef InputBuffer, char *UncompressedBuffer,
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size_t &UncompressedSize);
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Error uncompress(StringRef InputBuffer,
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SmallVectorImpl<char> &UncompressedBuffer,
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size_t UncompressedSize);
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uint32_t crc32(StringRef Buffer);
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} // End of namespace zlib
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} // End of namespace llvm
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#endif
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