63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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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 <folly/logging/ObjectToString.h>
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#include <folly/Demangle.h>
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namespace {
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void appendHexdump(std::string& str, const uint8_t* data, size_t length) {
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static constexpr const char nibbleToChar[] = "0123456789abcdef";
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for (size_t index = 0; index < length; ++index) {
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str.push_back(' ');
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str.push_back(nibbleToChar[(data[index] >> 4) & 0xf]);
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str.push_back(nibbleToChar[data[index] & 0xf]);
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}
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}
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} // namespace
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namespace folly {
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namespace logging {
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namespace detail {
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void appendRawObjectInfo(
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std::string& result,
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const std::type_info* type,
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const uint8_t* data,
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size_t length) {
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if (type) {
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result.push_back('[');
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try {
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toAppend(folly::demangle(*type), &result);
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} catch (const std::exception&) {
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result.append("unknown_type");
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}
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result.append(" of size ");
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} else {
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result.append("[object of size ");
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}
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toAppend(length, &result);
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result.append(":");
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appendHexdump(result, data, length);
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result.push_back(']');
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}
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} // namespace detail
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} // namespace logging
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} // namespace folly
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