Alexander Shabalin
71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
/*
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* Copyright 2010-2017 JetBrains s.r.o.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <cassert>
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#include "Names.h"
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#include "Base64.h"
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#include "City.h"
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#include "Sha1.h"
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namespace {
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constexpr uint32_t PrintableBase64Size(uint32_t input_length) {
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return ((input_length + 2) / 3 * 4) + 1;
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}
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void PrintableBase64(const uint8_t* data, uint32_t data_length, char* base64) {
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int rv = EncodeBase64(data, data_length, base64, PrintableBase64Size(data_length));
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assert(rv == 0);
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}
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} // namespace
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extern "C" {
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// Make local hash out of arbitrary data.
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void MakeLocalHash(const void* data, uint32_t size, LocalHash* hash) {
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*hash = CityHash64(data, size);
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}
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// Make global hash out of arbitrary data.
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void MakeGlobalHash(const void* data, uint32_t size, GlobalHash* hash) {
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SHA1_CTX ctx;
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SHA1Init(&ctx);
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SHA1Update(&ctx, reinterpret_cast<const unsigned char *>(data), size);
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SHA1Final(&hash->bits[0], &ctx);
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}
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// Make printable C string out of local hash.
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void PrintableLocalHash(const LocalHash* hash, char* buffer, uint32_t size) {
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if (size < PrintableBase64Size(sizeof(*hash))) {
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assert(false);
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return;
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}
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PrintableBase64(reinterpret_cast<const uint8_t*>(&hash), sizeof(*hash), buffer);
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}
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// Make printable C string out of global hash.
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void PrintableGlobalHash(const GlobalHash* hash, char* buffer, uint32_t size) {
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if (size < PrintableBase64Size(sizeof(*hash))) {
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assert(false);
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return;
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}
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PrintableBase64(hash->bits, sizeof(*hash), buffer);
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}
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} // extern "C"
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