Add support for Swift Package Manager

Author: dreampiggy

.gitignore

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

.travis.yml

@@ -15,10 +15,9 @@ notifications:
 before_install:
   - env
   - locale
-  - gem install cocoapods --no-rdoc --no-ri --no-document --quiet
-  - gem install xcpretty --no-rdoc --no-ri --no-document --quiet
+  - gem install cocoapods --no-document --quiet
+  - gem install xcpretty --no-document --quiet
   - pod --version
-  - pod setup --silent > /dev/null
   - pod repo update --silent
   - xcpretty --version
   - xcodebuild -version

Package.resolved

@@ -0,0 +1,34 @@
+{
+  "object": {
+    "pins": [
+      {
+        "package": "libde265",
+        "repositoryURL": "https://github.com/SDWebImage/libde265-Xcode.git",
+        "state": {
+          "branch": null,
+          "revision": "39b0430c631669dba8e578a2ececae3a05dbb935",
+          "version": "1.0.4"
+        }
+      },
+      {
+        "package": "libheif",
+        "repositoryURL": "https://github.com/SDWebImage/libheif-Xcode.git",
+        "state": {
+          "branch": null,
+          "revision": "e78f3a9bf4f45f857032029a519adae46170978f",
+          "version": "1.6.1"
+        }
+      },
+      {
+        "package": "SDWebImage",
+        "repositoryURL": "https://github.com/SDWebImage/SDWebImage.git",
+        "state": {
+          "branch": null,
+          "revision": "247f74a5d191e9c6bd601d292c99cf9fe1658930",
+          "version": "5.4.1"
+        }
+      }
+    ]
+  },
+  "version": 1
+}

Package.swift

@@ -0,0 +1,35 @@
+// 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: "SDWebImageHEIFCoder",
+    platforms: [
+        .macOS(.v10_10), .iOS(.v8), .tvOS(.v9), .watchOS(.v2)
+    ],
+    products: [
+        // Products define the executables and libraries produced by a package, and make them visible to other packages.
+        .library(
+            name: "SDWebImageHEIFCoder",
+            targets: ["SDWebImageHEIFCoder"]),
+    ],
+    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"),
+        .package(url: "https://github.com/SDWebImage/libheif-Xcode.git", from: "1.6.1")
+    ],
+    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: "SDWebImageHEIFCoder",
+            dependencies: ["SDWebImage", "libheif"],
+            path: ".",
+            sources: ["SDWebImageHEIFCoder/Classes"],
+            publicHeadersPath: "SDWebImageHEIFCoder/Classes",
+            cSettings: [.define("HAVE_LIBDE265")]
+        )
+    ]
+)

README.md

@@ -4,6 +4,7 @@
 [![Version](https://img.shields.io/cocoapods/v/SDWebImageHEIFCoder.svg?style=flat)](https://cocoapods.org/pods/SDWebImageHEIFCoder)
 [![License](https://img.shields.io/cocoapods/l/SDWebImageHEIFCoder.svg?style=flat)](https://cocoapods.org/pods/SDWebImageHEIFCoder)
 [![Platform](https://img.shields.io/cocoapods/p/SDWebImageHEIFCoder.svg?style=flat)](https://cocoapods.org/pods/SDWebImageHEIFCoder)
+[![SwiftPM compatible](https://img.shields.io/badge/SwiftPM-compatible-brightgreen.svg?style=flat)](https://swift.org/package-manager/)
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/SDWebImage/SDWebImageHEIFCoder)
 
 ## 4.x compatibility
@@ -69,6 +70,20 @@ Carthage does not support like CocoaPods' subspec, since most of user use HEIF d
 github "SDWebImage/SDWebImageHEIFCoder"
 ```
 
+#### Swift Package Manager (Xcode 11+)
+
+SDWebImageHEIFCoder is available through [Swift Package Manager](https://swift.org/package-manager).
+
+The framework through SwiftPM only supports libde265 for HEIF decoding.
+
+```swift
+let package = Package(
+    dependencies: [
+        .package(url: "https://github.com/SDWebImage/SDWebImageHEIFCoder.git", from: "0.6")
+    ]
+)
+```
+
 ## Usage
 
 To use HEIF coder, you should firstly add the `SDImageHEIFCoder.sharedCoder` to the coders manager. You can also detect the target platform compatibility for HEIF and choose add coder.

SDWebImageHEIFCoder/Classes/SDImageHEIFCoder.h

@@ -5,7 +5,11 @@
 //  Created by lizhuoli on 2018/5/8.
 //
 
+#if __has_include(<SDWebImage/SDWebImage.h>)
 #import <SDWebImage/SDWebImage.h>
+#else
+@import SDWebImage;
+#endif
 
 @interface SDImageHEIFCoder : NSObject <SDImageCoder>