Feature/swift pm support

Package.swift

@@ -0,0 +1,34 @@
+// swift-tools-version:5.3
+import PackageDescription
+
+let package = Package(
+    name: "TrueTime",
+    products: [
+        .library(
+            name: "TrueTime",
+            targets: ["TrueTime"]),
+        .library(
+            name: "CTrueTime",
+            targets: ["CTrueTime"])
+    ],
+    dependencies: [
+        .package(url: "https://github.com/Quick/Nimble.git", .upToNextMajor(from: "8.0.1")),
+        .package(url: "https://github.com/Quick/Quick.git", .upToNextMajor(from: "2.1.0")),
+        .package(url: "https://github.com/typelift/SwiftCheck.git", .upToNextMajor(from: "0.12.0")),
+    ],
+    targets: [
+        .target(
+            name: "TrueTime",
+            dependencies: ["CTrueTime"]),
+        .testTarget(
+            name: "TrueTimeTests",
+            dependencies: [
+                "TrueTime", 
+                "Quick", 
+                "Nimble", 
+                "SwiftCheck"
+            ]
+        ),
+        .systemLibrary(name: "CTrueTime")
+    ]
+)

Sources/Endian.swift → Sources/TrueTime/Endian.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import CTrueTime
 
 protocol NetworkOrderConvertible {
     var byteSwapped: Self { get }

Sources/NTPClient.swift → Sources/TrueTime/NTPClient.swift

@@ -6,6 +6,9 @@
 //  Copyright © 2016 Instacart. All rights reserved.
 //
 
+import Foundation
+import CTrueTime
+
 struct NTPConfig {
     let timeout: TimeInterval
     let maxRetries: Int

Sources/NTPConnection.swift → Sources/TrueTime/NTPConnection.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import CTrueTime
 
 typealias NTPConnectionCallback = (NTPConnection, FrozenNetworkTimeResult) -> Void
 

Sources/NTPExtensions.swift → Sources/TrueTime/NTPExtensions.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import CTrueTime
 
 public extension timeval {
     static func uptime() -> timeval {

Sources/NTPResponse.swift → Sources/TrueTime/NTPResponse.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import CTrueTime
 
 struct NTPResponse {
     let packet: ntp_packet_t

Sources/ReferenceTime.swift → Sources/TrueTime/ReferenceTime.swift

@@ -6,6 +6,9 @@
 //  Copyright © 2016 Instacart. All rights reserved.
 //
 
+import Foundation
+import CTrueTime
+
 typealias FrozenTimeResult = Result<FrozenTime, NSError>
 typealias FrozenTimeCallback = (FrozenTimeResult) -> Void
 

Sources/TrueTime.swift → Sources/TrueTime/TrueTime.swift

@@ -8,6 +8,12 @@
 
 import Foundation
 
+let TrueTimeErrorDomain = "com.instacart.TrueTimeErrorDomain"
+
+public extension Notification.Name {
+    static let TrueTimeUpdated = Notification.Name.init("TrueTimeUpdatedNotification")
+}
+
 @objc public enum TrueTimeError: Int {
     case cannotFindHost
     case dnsLookupFailed

Tests/ArbitraryExtensions.swift → Tests/TrueTimeTests/ArbitraryExtensions.swift

@@ -7,6 +7,7 @@
 //
 
 @testable import TrueTime
+import CTrueTime
 import SwiftCheck
 
 extension timeval: Arbitrary {

Tests/NTPExtensionsSpec.swift → Tests/TrueTimeTests/NTPExtensionsSpec.swift

@@ -7,6 +7,7 @@
 //
 
 @testable import TrueTime
+import CTrueTime
 import Nimble
 import Quick
 import SwiftCheck

Tests/NTPIntegrationSpec.swift → Tests/TrueTimeTests/NTPIntegrationSpec.swift

@@ -7,6 +7,7 @@
 //
 
 @testable import TrueTime
+import Foundation
 import Nimble
 import Quick