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46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
//===--- MD5Stream.h - raw_ostream that compute MD5 ------------*- C++ -*-===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2022 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_MD5STREAM_H
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#define SWIFT_MD5STREAM_H
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#include "llvm/Support/MD5.h"
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#include "llvm/Support/raw_ostream.h"
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namespace swift {
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/// An output stream which calculates the MD5 hash of the streamed data.
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class MD5Stream : public llvm::raw_ostream {
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private:
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uint64_t Pos = 0;
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llvm::MD5 Hash;
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void write_impl(const char *Ptr, size_t Size) override {
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Hash.update(ArrayRef<uint8_t>(reinterpret_cast<const uint8_t *>(Ptr), Size));
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Pos += Size;
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}
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uint64_t current_pos() const override { return Pos; }
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public:
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void final(llvm::MD5::MD5Result &Result) {
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flush();
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Hash.final(Result);
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}
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};
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} // namespace swift
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#endif
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