Support Swift Package Manager. (#77)

* add SwiftPackageManager support.
* add resourcehelper's file reference to fix test error in SwiftPM

Author: orangeince

.gitignore

@@ -19,6 +19,7 @@ DerivedData
 *.hmap
 *.ipa
 *.xcuserstate
+.build/
 
 # CocoaPods
 #

Package.swift

@@ -0,0 +1,29 @@
+// swift-tools-version:5.0
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "SwiftCSV",
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "SwiftCSV",
+            targets: ["SwiftCSV"]),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        // .package(url: /* package url */, 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: "SwiftCSV",
+            path: "SwiftCSV"),
+        .testTarget(
+            name: "SwiftCSVTests",
+            dependencies: ["SwiftCSV"],
+            path: "SwiftCSVTests"),
+    ]
+)

SwiftCSV.xcodeproj/project.pbxproj

@@ -65,6 +65,9 @@
 		BEE5461E1CBBB15900C0666F /* Description.swift in Sources */ = {isa = PBXBuildFile; fileRef = BEE5461D1CBBB15900C0666F /* Description.swift */; };
 		E46085921CCB1E8F00385286 /* large.csv in Resources */ = {isa = PBXBuildFile; fileRef = E46085911CCB1E8F00385286 /* large.csv */; };
 		E46085941CCB1F5C00385286 /* PerformanceTest.swift in Sources */ = {isa = PBXBuildFile; fileRef = E46085931CCB1F5C00385286 /* PerformanceTest.swift */; };
+		F5C19F502283243C00920B06 /* ResourceHelper.swift in Sources */ = {isa = PBXBuildFile; fileRef = F5C19F4F2283243C00920B06 /* ResourceHelper.swift */; };
+		F5C19F512283C0C100920B06 /* ResourceHelper.swift in Sources */ = {isa = PBXBuildFile; fileRef = F5C19F4F2283243C00920B06 /* ResourceHelper.swift */; };
+		F5C19F522283C0C300920B06 /* ResourceHelper.swift in Sources */ = {isa = PBXBuildFile; fileRef = F5C19F4F2283243C00920B06 /* ResourceHelper.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -124,6 +127,7 @@
 		BEE5461D1CBBB15900C0666F /* Description.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Description.swift; sourceTree = "<group>"; };
 		E46085911CCB1E8F00385286 /* large.csv */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = large.csv; sourceTree = "<group>"; };
 		E46085931CCB1F5C00385286 /* PerformanceTest.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = PerformanceTest.swift; sourceTree = "<group>"; };
+		F5C19F4F2283243C00920B06 /* ResourceHelper.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ResourceHelper.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -243,6 +247,7 @@
 				BE06B67C1CB7267B009578CC /* empty_fields.csv */,
 				BE06B6811CB7287F009578CC /* quotes.csv */,
 				E46085911CCB1E8F00385286 /* large.csv */,
+				F5C19F4F2283243C00920B06 /* ResourceHelper.swift */,
 			);
 			name = Res;
 			sourceTree = "<group>";
@@ -558,6 +563,7 @@
 			files = (
 				E46085941CCB1F5C00385286 /* PerformanceTest.swift in Sources */,
 				3D1E59C71945FFAD001CF760 /* CSVTests.swift in Sources */,
+				F5C19F502283243C00920B06 /* ResourceHelper.swift in Sources */,
 				508975E11DBF3E51006F3DBE /* EnumeratedViewTests.swift in Sources */,
 				3D3749E3194D6DF7008F262A /* TSVTests.swift in Sources */,
 				BE06B6801CB726B5009578CC /* URLTests.swift in Sources */,
@@ -585,6 +591,7 @@
 			files = (
 				5FB74BE01CCB9312009DDBF1 /* CSVTests.swift in Sources */,
 				5FB74BE11CCB9312009DDBF1 /* QuotedTests.swift in Sources */,
+				F5C19F512283C0C100920B06 /* ResourceHelper.swift in Sources */,
 				508975E21DBF3E51006F3DBE /* EnumeratedViewTests.swift in Sources */,
 				5FB74BE21CCB9312009DDBF1 /* TSVTests.swift in Sources */,
 				5FB74BE31CCB9312009DDBF1 /* URLTests.swift in Sources */,
@@ -612,6 +619,7 @@
 			files = (
 				5FB74BE51CCB931F009DDBF1 /* CSVTests.swift in Sources */,
 				5FB74BE61CCB931F009DDBF1 /* QuotedTests.swift in Sources */,
+				F5C19F522283C0C300920B06 /* ResourceHelper.swift in Sources */,
 				508975E31DBF3E51006F3DBE /* EnumeratedViewTests.swift in Sources */,
 				5FB74BE71CCB931F009DDBF1 /* TSVTests.swift in Sources */,
 				5FB74BE81CCB931F009DDBF1 /* URLTests.swift in Sources */,

SwiftCSVTests/PerformanceTest.swift

@@ -13,7 +13,7 @@ class PerformanceTest: XCTestCase {
     var csv: CSV!
 
     override func setUp() {
-        let csvURL = Bundle(for: CSVTests.self).url(forResource: "large", withExtension: "csv")!
+        let csvURL = ResourceHelper.url(forResource: "large", withExtension: "csv")!
         csv = try! CSV(url: csvURL)
     }
 

SwiftCSVTests/ResourceHelper.swift

@@ -0,0 +1,16 @@
+import Foundation
+
+// Find url of resource.
+// This is a workaround for SwiftPM, becasue SwiftPM is not yet support for include resources with targets.(https://bugs.swift.org/browse/SR-2866)
+struct ResourceHelper {
+    static func url(forResource name: String, withExtension type: String) -> URL? {
+        let bundle = Bundle(for: CSVTests.self)
+        if let url = bundle.url(forResource: name, withExtension: type) {
+            return url
+        } else if let realBundle = Bundle(path: "\(bundle.bundlePath)/../../../../SwiftCSVTests") {
+            return realBundle.url(forResource: name, withExtension: type)
+        } else {
+            return nil
+        }
+    }
+}

SwiftCSVTests/URLTests.swift

@@ -13,7 +13,7 @@ class URLTests: XCTestCase {
     var csv: CSV!
 
     func testEmptyFields() {
-        let csvURL = Bundle(for: CSVTests.self).url(forResource: "empty_fields", withExtension: "csv")!
+        let csvURL = ResourceHelper.url(forResource: "empty_fields", withExtension: "csv")!
         csv = try! CSV(url: csvURL)
         let expected = [
             ["id": "1", "name": "John", "age": "23"],
@@ -29,7 +29,7 @@ class URLTests: XCTestCase {
     }
 
     func testQuotes() {
-        let csvURL = Bundle(for: CSVTests.self).url(forResource: "quotes", withExtension: "csv")!
+        let csvURL = ResourceHelper.url(forResource: "quotes", withExtension: "csv")!
         csv = try! CSV(url: csvURL)
         let expected = [
             ["id": "4", "name, first": "Alex", "name, last": "Smith"],