chromium/components/zucchini/crc32.cc

// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "components/zucchini/crc32.h"

#include <array>

#include "base/check_op.h"

namespace zucchini {

namespace {

std::array<uint32_t, 256> MakeCrc32Table() { … }

}  // namespace

// Minimalistic CRC-32 implementation for Zucchini usage. Adapted from LZMA SDK
// (found at third_party/lzma_sdk/C/7zCrc.c), which is public domain.
uint32_t CalculateCrc32(const uint8_t* first, const uint8_t* last) { … }

}  // namespace zucchini