mirror of
https://github.com/kidfromjupiter/nearby.git
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54 lines
1.5 KiB
C++
54 lines
1.5 KiB
C++
// Copyright 2020 Google LLC
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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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// https://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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#include "internal/crypto_cros/nearby_base.h"
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#include <cstddef>
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#include <limits>
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#include <string>
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#ifdef NEARBY_CHROMIUM
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#include "internal/platform/logging.h"
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#elif defined(NEARBY_SWIFTPM)
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#include "internal/platform/logging.h"
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#else
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#include "absl/log/check.h" // nogncheck
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#endif
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#include "absl/types/span.h"
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namespace nearbybase {
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char* WriteInto(std::string* str, size_t length_with_null) {
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DCHECK_GE(length_with_null, 1u);
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str->reserve(length_with_null);
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str->resize(length_with_null - 1);
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return &((*str)[0]);
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}
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std::string HexEncode(const void* bytes, size_t size) {
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static const char kHexChars[] = "0123456789ABCDEF";
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// Each input byte creates two output hex characters.
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std::string ret(size * 2, '\0');
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for (size_t i = 0; i < size; ++i) {
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char b = reinterpret_cast<const char*>(bytes)[i];
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ret[(i * 2)] = kHexChars[(b >> 4) & 0xf];
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ret[(i * 2) + 1] = kHexChars[b & 0xf];
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}
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return ret;
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}
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} // namespace nearbybase
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