Update lottie-ios

submodules/lottie-ios/Sources/Public/macOS/BundleImageProvider.macOS.swift

@@ -0,0 +1,80 @@
+//
+//  LottieBundleImageProvider.swift
+//  lottie-swift
+//
+//  Created by Brandon Withrow on 1/25/19.
+//
+
+#if os(macOS)
+import AppKit
+
+/// Provides an image for a lottie animation from a provided Bundle.
+public class BundleImageProvider: AnimationImageProvider {
+
+  // MARK: Lifecycle
+
+  /// Initializes an image provider with a bundle and an optional subpath.
+  ///
+  /// Provides images for an animation from a bundle. Additionally the provider can
+  /// search a specific subpath for the images.
+  ///
+  /// - Parameter bundle: The bundle containing images for the provider.
+  /// - Parameter searchPath: The subpath is a path within the bundle to search for image assets.
+  ///
+  public init(bundle: Bundle, searchPath: String?) {
+    self.bundle = bundle
+    self.searchPath = searchPath
+  }
+
+  // MARK: Public
+
+  public func imageForAsset(asset: ImageAsset) -> CGImage? {
+
+    if
+      let data = Data(imageAsset: asset),
+      let image = NSImage(data: data)
+    {
+      return image.CGImage
+    }
+
+    let imagePath: String?
+    /// Try to find the image in the bundle.
+    if let searchPath = searchPath {
+      /// Search in the provided search path for the image
+      var directoryPath = URL(fileURLWithPath: searchPath)
+      directoryPath.appendPathComponent(asset.directory)
+
+      if let path = bundle.path(forResource: asset.name, ofType: nil, inDirectory: directoryPath.path) {
+        /// First search for the image in the asset provided sub directory.
+        imagePath = path
+      } else if let path = bundle.path(forResource: asset.name, ofType: nil, inDirectory: searchPath) {
+        /// Try finding the image in the search path.
+        imagePath = path
+      } else {
+        imagePath = bundle.path(forResource: asset.name, ofType: nil)
+      }
+    } else {
+      if let path = bundle.path(forResource: asset.name, ofType: nil, inDirectory: asset.directory) {
+        /// First search for the image in the asset provided sub directory.
+        imagePath = path
+      } else {
+        /// First search for the image in bundle.
+        imagePath = bundle.path(forResource: asset.name, ofType: nil)
+      }
+    }
+
+    guard let foundPath = imagePath, let image = NSImage(contentsOfFile: foundPath) else {
+      /// No image found.
+      LottieLogger.shared.assertionFailure("Could not find image \"\(asset.name)\" in bundle")
+      return nil
+    }
+    return image.CGImage
+  }
+
+  // MARK: Internal
+
+  let bundle: Bundle
+  let searchPath: String?
+}
+
+#endif