Support Swift 5 (#39)

.swift-version

@@ -1 +1 @@
-4.2.3
+5.0

.travis.yml

@@ -25,17 +25,17 @@ matrix:
       dist: xenial
       sudo: required
       services: docker
-      env: DOCKER_IMAGE=swift:4.2.3
+      env: DOCKER_IMAGE=swift:4.2.4 SWIFT_SNAPSHOT=4.2.4
     - os: linux
       dist: xenial
       sudo: required
       services: docker
-      env: DOCKER_IMAGE=swift:4.2.3 SWIFT_SNAPSHOT=$SWIFT_DEVELOPMENT_SNAPSHOT
+      env: DOCKER_IMAGE=swift:5.0-xenial
     - os: linux
       dist: xenial
       sudo: required
       services: docker
-      env: DOCKER_IMAGE=ubuntu:18.04
+      env: DOCKER_IMAGE=swift:5.0 SWIFT_SNAPSHOT=$SWIFT_DEVELOPMENT_SNAPSHOT
     - os: osx
       osx_image: xcode9.2
       sudo: required
@@ -47,8 +47,12 @@ matrix:
     - os: osx
       osx_image: xcode10.1
       sudo: required
+      env: SWIFT_SNAPSHOT=4.2.1
     - os: osx
-      osx_image: xcode10.1
+      osx_image: xcode10.2
+      sudo: required
+    - os: osx
+      osx_image: xcode10.2
       sudo: required
       env: SWIFT_SNAPSHOT=$SWIFT_DEVELOPMENT_SNAPSHOT
 

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version:4.0
+// swift-tools-version:5.0
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription

Package@swift-4.0.swift

@@ -0,0 +1,28 @@
+// swift-tools-version:4.0
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "KituraContracts",
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "KituraContracts",
+            targets: ["KituraContracts"]),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        .package(url:"https://github.com/IBM-Swift/LoggerAPI.git", from: "1.0.0"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
+        .target(
+            name: "KituraContracts",
+            dependencies: ["LoggerAPI"]),
+        .testTarget(
+            name: "KituraContractsTests",
+            dependencies: ["KituraContracts"]),
+    ]
+)

Package@swift-4.1.swift

@@ -0,0 +1,28 @@
+// swift-tools-version:4.0
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "KituraContracts",
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "KituraContracts",
+            targets: ["KituraContracts"]),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        .package(url:"https://github.com/IBM-Swift/LoggerAPI.git", from: "1.0.0"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
+        .target(
+            name: "KituraContracts",
+            dependencies: ["LoggerAPI"]),
+        .testTarget(
+            name: "KituraContractsTests",
+            dependencies: ["KituraContracts"]),
+    ]
+)

Package@swift-4.2.swift

@@ -0,0 +1,28 @@
+// swift-tools-version:4.2
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "KituraContracts",
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "KituraContracts",
+            targets: ["KituraContracts"]),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        .package(url:"https://github.com/IBM-Swift/LoggerAPI.git", from: "1.0.0"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
+        // Targets can depend on other targets in this package, and on products in packages which this package depends on.
+        .target(
+            name: "KituraContracts",
+            dependencies: ["LoggerAPI"]),
+        .testTarget(
+            name: "KituraContractsTests",
+            dependencies: ["KituraContracts"]),
+    ]
+)

Sources/KituraContracts/Contracts.swift

@@ -1021,10 +1021,18 @@ public struct Ordering: Codable {
 
   // Function to extract the String value from the Order enum case
   private func extractValue(_ value: String) throws -> String {
+#if swift(>=4.2)
+    guard var startIndex = value.firstIndex(of: "("),
+          let endIndex = value.firstIndex(of: ")") else {
+      throw QueryParamsError.invalidValue
+    }
+#else
     guard var startIndex = value.index(of: "("),
           let endIndex = value.index(of: ")") else {
       throw QueryParamsError.invalidValue
     }
+#endif
+
     startIndex = value.index(startIndex, offsetBy: 1)
     let extractedValue = value[startIndex..<endIndex]
     return String(extractedValue)