[iOS NC] LSC: Separate third_party/nearby/internal/platform/implementation/ios to

- third_party/nearby/internal/platform/implementation/ios (for platform)
- third_party/nearby/connections/clients/ios (for connections)
- third_party/nearby/connections/samples/ios (for sample codes)

PiperOrigin-RevId: 440895852

internal/platform/implementation/ios/utils.h

@@ -0,0 +1,74 @@
+// Copyright 2020 Google LLC
+//
+// 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
+//
+//     https://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.
+
+#import <CoreBluetooth/CoreBluetooth.h>
+#import <Foundation/Foundation.h>
+
+#include <set>
+#include <string>
+
+#include "absl/container/flat_hash_map.h"
+#include "absl/strings/string_view.h"
+#include "internal/platform/byte_array.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+namespace location {
+namespace nearby {
+
+/// Converts an Obj-C BOOL to a C++ bool.
+bool CppBoolFromObjCBool(BOOL b);
+
+/// Converts NSNumber to a char.
+char CharFromNSNumber(NSNumber *n);
+
+/// Converts a C++ string to an Obj-C string.
+NSString *ObjCStringFromCppString(absl::string_view s);
+
+/// Converts an Obj-C string to a C++ string.
+std::string CppStringFromObjCString(NSString *s);
+
+/// Converts ByteArray to NSData.
+NSData *NSDataFromByteArray(ByteArray byteArray);
+
+/// Converts NSData to ByteArray.
+ByteArray ByteArrayFromNSData(NSData *data);
+
+/// Converts NSUUID to a C++ string (representing a UUID).
+std::string UUIDStringFromNSUUID(NSUUID *uuid);
+
+/// Converts a C++ string (representing a Bluetooth UUID) to CBUUID.
+CBUUID *CBUUIDFromBluetoothUUIDString(absl::string_view bluetoothUUID);
+
+/// Converts CBUUID to a C++ string (representing a Bluetooth UUID).
+std::string BluetoothUUIDStringFromCBUUID(CBUUID *bluetoothUUID);
+
+/// Converts a C++ set of strings (representing Bluetooth UUIDs) to an NSSet of CBUUID.
+NSSet<CBUUID *> *CBUUIDSetFromBluetoothUUIDStringSet(const std::set<std::string> &bluetoothUUIDSet);
+
+/// Converts an NSSet of CBUUID to a C++ set of strings (representing Bluetooth UUIDs).
+std::set<std::string> BluetoothUUIDStringSetFromCBUUIDSet(NSSet<CBUUID *> *bluetoothUUIDSet);
+
+/// Converts a C++ TxtRecord to an Obj-C TxtRecord.
+NSDictionary<NSString *, NSData *> *NSDictionaryFromCppTxtRecords(
+    const absl::flat_hash_map<std::string, std::string> &txt_records);
+
+/// Converts an Obj-C TxtRecord to a C++ TxtRecord.
+absl::flat_hash_map<std::string, std::string> AbslHashMapFromObjCTxtRecords(
+    NSDictionary<NSString *, NSData *> *txtRecords);
+
+}  // namespace nearby
+}  // namespace location
+
+NS_ASSUME_NONNULL_END