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54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
// Copyright 2025 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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#ifndef THIRD_PARTY_NEARBY_CONNECTIONS_IMPLEMENTATION_MEDIUMS_ADVERTISEMENTS_DATA_ELEMENT_H_
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#define THIRD_PARTY_NEARBY_CONNECTIONS_IMPLEMENTATION_MEDIUMS_ADVERTISEMENTS_DATA_ELEMENT_H_
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#include <cstdint>
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#include <optional>
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#include <string>
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#include "internal/platform/stream_reader.h"
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#include "internal/platform/stream_writer.h"
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namespace nearby::connections::advertisements {
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class DataElement {
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public:
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constexpr static uint8_t kMaxLengthValue = 0x7f;
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constexpr static uint8_t kMaxTypeValue = 0xff;
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~DataElement() = default;
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static std::optional<DataElement> From(uint8_t type, std::string value);
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static std::optional<DataElement> FromStreamReader(StreamReader& reader);
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static std::optional<DataElement> FromData(const std::string& data);
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uint8_t type() const { return type_; }
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uint8_t length() const { return value_.size(); }
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std::string value() const { return value_; }
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std::optional<std::string> ToData() const;
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bool ToStreamWriter(StreamWriter& writer) const;
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private:
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// Each DE has a defined meaning and follows a common TLV structure.
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uint8_t type_{0};
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std::string value_;
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};
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} // namespace nearby::connections::advertisements
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#endif // THIRD_PARTY_NEARBY_CONNECTIONS_IMPLEMENTATION_MEDIUMS_ADVERTISEMENTS_DATA_ELEMENT_H_
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