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/*
* Copyright 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <algorithm>
#include <array>
#include <cstdint>
#include <initializer_list>
#include <optional>
#include <string>
#include "common/strings.h"
#include "packet/custom_field_fixed_size_interface.h"
#include "storage/serializable.h"
namespace bluetooth {
namespace common {
template <std::size_t LENGTH>
class ByteArray : public packet::CustomFieldFixedSizeInterface<ByteArray<LENGTH>>,
public storage::Serializable<ByteArray<LENGTH>> {
public:
static constexpr size_t kLength = LENGTH;
ByteArray() = default;
ByteArray(const uint8_t (&d)[kLength]) {
std::copy(d, d + kLength, data());
}
ByteArray(std::array<uint8_t, kLength> a) : bytes(std::move(a)) {}
std::array<uint8_t, kLength> bytes = {};
uint8_t* data() override {
return bytes.data();
}
const uint8_t* data() const override {
return bytes.data();
}
// operators
bool operator<(const ByteArray& rhs) const {
return bytes < rhs.bytes;
}
bool operator==(const ByteArray& rhs) const {
return bytes == rhs.bytes;
}
bool operator>(const ByteArray& rhs) const {
return (rhs < *this);
}
bool operator<=(const ByteArray& rhs) const {
return !(*this > rhs);
}
bool operator>=(const ByteArray& rhs) const {
return !(*this < rhs);
}
bool operator!=(const ByteArray& rhs) const {
return !(*this == rhs);
}
// storage::Serializable methods
std::string ToString() const override {
return common::ToHexString(bytes.begin(), bytes.end());
}
static std::optional<ByteArray<kLength>> FromString(const std::string& from) {
if (from.length() != (kLength * 2)) {
return std::nullopt;
}
auto vec = common::FromHexString(from);
if (!vec) {
return std::nullopt;
}
ByteArray<kLength> byte_array = {};
std::move(vec->data(), vec->data() + vec->size(), byte_array.data());
return byte_array;
}
std::string ToLegacyConfigString() const override {
return ToString();
}
static std::optional<ByteArray<kLength>> FromLegacyConfigString(const std::string& from) {
return FromString(from);
}
};
} // namespace common
} // namespace bluetooth
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