1 files changed, 99 insertions, 0 deletions
diff --git a/gd/common/byte_array.h b/gd/common/byte_array.h
new file mode 100644
index 000000000..6f2f52944
--- /dev/null
+++ b/gd/common/byte_array.h
@@ -0,0 +1,99 @@
+/*
+ * 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
+\ No newline at end of file