mirror of
https://github.com/kidfromjupiter/nearby.git
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Alexey Polyudov
4baa1ce96a
Signed-off-by: Alexey Polyudov <apolyudov@google.com> Change-Id: Ie19e006429b138b3768e97dae971a43fdc5ef8bf
98 lines
3.0 KiB
C++
98 lines
3.0 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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#ifndef PLATFORM_V2_BASE_BYTE_ARRAY_H_
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#define PLATFORM_V2_BASE_BYTE_ARRAY_H_
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#include <cstdint>
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#include <string>
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#include "absl/strings/string_view.h"
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namespace location {
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namespace nearby {
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class ByteArray {
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public:
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// Create an empty ByteArray
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ByteArray() = default;
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ByteArray(const ByteArray&) = default;
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ByteArray& operator=(const ByteArray&) = default;
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ByteArray(ByteArray&&) = default;
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ByteArray& operator=(ByteArray&&) = default;
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// Create ByteArray from string.
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explicit ByteArray(absl::string_view source) {
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SetData(source.data(), source.size());
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}
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// Create default-initialized ByteArray of a given size.
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explicit ByteArray(size_t size) { SetData(size); }
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// Create value-initialized ByteArray of a given size.
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ByteArray(const char* data, size_t size) { SetData(data, size); }
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// Assign a new value to this ByteArray, as a copy of data, with a given size.
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void SetData(const char* data, size_t size) {
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if (data == nullptr) {
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size = 0;
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}
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data_.assign(data, size);
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}
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// Assign a new value of a given size to this ByteArray
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// (as a repeated char value).
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void SetData(size_t size, char value = 0) { data_.assign(size, value); }
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// Returns true, if changes were performed to container, false otherwise.
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bool CopyAt(size_t offset, const ByteArray& from, size_t source_offset = 0) {
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if (offset >= size()) return false;
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if (source_offset >= from.size()) return false;
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memcpy(data() + offset, from.data() + source_offset,
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std::min(size() - offset, from.size() - source_offset));
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return true;
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}
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char* data() { return &data_[0]; }
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const char* data() const { return data_.data(); }
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size_t size() const { return data_.size(); }
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bool Empty() const { return data_.empty(); }
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friend bool operator==(const ByteArray& lhs, const ByteArray& rhs);
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friend bool operator!=(const ByteArray& lhs, const ByteArray& rhs);
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friend bool operator<(const ByteArray& lhs, const ByteArray& rhs);
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explicit operator std::string() const { return data_; }
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private:
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std::string data_;
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};
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inline bool operator==(const ByteArray& lhs, const ByteArray& rhs) {
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return lhs.data_ == rhs.data_;
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}
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inline bool operator!=(const ByteArray& lhs, const ByteArray& rhs) {
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return !(lhs == rhs);
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}
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inline bool operator<(const ByteArray& lhs, const ByteArray& rhs) {
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return lhs.data_ < rhs.data_;
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}
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} // namespace nearby
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} // namespace location
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#endif // PLATFORM_V2_BASE_BYTE_ARRAY_H_
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