Add support for SwiftPM

Author: dreampiggy

.gitignore

@@ -34,3 +34,7 @@ Carthage/Build
 # `pod install` in .travis.yml
 #
 Example/Pods
+
+# SwiftPM
+.swiftpm
+.build

Package.resolved

@@ -0,0 +1,16 @@
+{
+  "object": {
+    "pins": [
+      {
+        "package": "SDWebImage",
+        "repositoryURL": "https://github.com/SDWebImage/SDWebImage.git",
+        "state": {
+          "branch": "master",
+          "revision": "09f06159a3284f6981d5495728e5c3cb3dfb82fa",
+          "version": null
+        }
+      }
+    ]
+  },
+  "version": 1
+}

Package.swift

@@ -0,0 +1,33 @@
+// 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: "SDWebImagePhotosPlugin",
+    platforms: [
+       .macOS(.v10_13), .iOS(.v8), .tvOS(.v10)
+    ],
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "SDWebImagePhotosPlugin",
+            targets: ["SDWebImagePhotosPlugin"]),
+    ],
+    dependencies: [
+        // Dependencies declare other packages that this package depends on.
+        // .package(url: /* package url */, from: "1.0.0"),
+        .package(url: "https://github.com/SDWebImage/SDWebImage.git", from: "5.1.0")
+    ],
+    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: "SDWebImagePhotosPlugin",
+            dependencies: ["SDWebImage"],
+            path: ".",
+            sources: ["SDWebImagePhotosPlugin/Classes"],
+            publicHeadersPath: "SDWebImagePhotosPlugin/Classes"
+        )
+    ]
+)

SDWebImagePhotosPlugin/Classes/PHImageRequestOptions+SDWebImagePhotosPlugin.m

@@ -8,7 +8,6 @@
 
 #import "PHImageRequestOptions+SDWebImagePhotosPlugin.h"
 #import "SDWebImagePhotosDefine.h"
-#import <SDWebImage/SDWebImage.h>
 #import <objc/runtime.h>
 
 @implementation PHImageRequestOptions (SDWebImagePhotosPlugin)

SDWebImagePhotosPlugin/Classes/SDWebImagePhotosDefine.h

@@ -6,7 +6,7 @@
  * file that was distributed with this source code.
  */
 
-#import <SDWebImage/SDWebImageDefine.h>
+@import SDWebImage;
 
 /**
  * The scheme when identifing the URL is Photos URL

SDWebImagePhotosPlugin/Classes/SDWebImagePhotosLoader.h

@@ -6,9 +6,8 @@
  * file that was distributed with this source code.
  */
 
-#import <SDWebImage/SDWebImage.h>
-#import <Photos/Photos.h>
-#import "SDWebImagePhotosDefine.h"
+@import SDWebImage;
+@import Photos;
 
 // The imgae loader to load image asset from Photos library. You need to register the loader into manager firstly. Use `@import SDWebImagePhotosPlugin` to import full framework instead of each header.
 // @note To control single image request options, use the context option in `SDWebImagePhotosDefine.h`.

SDWebImagePhotosPlugin/Classes/SDWebImagePhotosLoader.m

@@ -7,6 +7,7 @@
  */
 
 #import "SDWebImagePhotosLoader.h"
+#import "SDWebImagePhotosDefine.h"
 #import "NSURL+SDWebImagePhotosPlugin.h"
 #import "PHImageRequestOptions+SDWebImagePhotosPlugin.h"
 #import "SDWebImagePhotosError.h"