47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
//==- raw_sha1_ostream.h - raw_ostream that compute SHA1 --*- C++ -*-==//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the raw_sha1_ostream class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_SUPPORT_RAW_SHA1_OSTREAM_H
|
|
#define LLVM_SUPPORT_RAW_SHA1_OSTREAM_H
|
|
|
|
#include "llvm/ADT/ArrayRef.h"
|
|
#include "llvm/Support/SHA1.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// A raw_ostream that hash the content using the sha1 algorithm.
|
|
class raw_sha1_ostream : public raw_ostream {
|
|
SHA1 State;
|
|
|
|
/// See raw_ostream::write_impl.
|
|
void write_impl(const char *Ptr, size_t Size) override {
|
|
State.update(ArrayRef<uint8_t>((const uint8_t *)Ptr, Size));
|
|
}
|
|
|
|
public:
|
|
/// Return the current SHA1 hash for the content of the stream
|
|
StringRef sha1() {
|
|
flush();
|
|
return State.result();
|
|
}
|
|
|
|
/// Reset the internal state to start over from scratch.
|
|
void resetHash() { State.init(); }
|
|
|
|
uint64_t current_pos() const override { return 0; }
|
|
};
|
|
|
|
} // end llvm namespace
|
|
|
|
#endif
|