Remove Runes dependency

- Closes #45

Cartfile.private

@@ -1 +0,0 @@
-github "thoughtbot/Runes" >= 3.0.0

Cartfile.resolved

@@ -1 +0,0 @@
-github "thoughtbot/Runes" "v3.1.0"

Carthage/Checkouts/Runes

@@ -1 +0,0 @@
-Subproject commit 17ff8dcc1331ed1f2cb949d6af194844a180021c

Gifu.xcodeproj/project.pbxproj

@@ -9,7 +9,6 @@
 /* Begin PBXBuildFile section */
 		0036ABB71BBD1D0B00C6CC3D /* mugen.gif in Resources */ = {isa = PBXBuildFile; fileRef = 0036ABB61BBD1D0B00C6CC3D /* mugen.gif */; };
 		0036ABB91BBD1D1400C6CC3D /* nailed.gif in Resources */ = {isa = PBXBuildFile; fileRef = 0036ABB81BBD1D1400C6CC3D /* nailed.gif */; };
-		004529921BD82209006493BF /* Runes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 004529911BD82209006493BF /* Runes.swift */; };
 		005656ED1A6F14D6008A0ED1 /* Animator.swift in Sources */ = {isa = PBXBuildFile; fileRef = 005656EC1A6F14D6008A0ED1 /* Animator.swift */; };
 		005656EF1A6F1C26008A0ED1 /* AnimatableImageView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 005656EE1A6F1C26008A0ED1 /* AnimatableImageView.swift */; };
 		007E08441BD95E6200883D0C /* ArrayExtension.swift in Sources */ = {isa = PBXBuildFile; fileRef = 007E08431BD95E6200883D0C /* ArrayExtension.swift */; };
@@ -19,7 +18,6 @@
 		00B8C75F1A364DCE00C188E7 /* ImageSourceHelpers.swift in Sources */ = {isa = PBXBuildFile; fileRef = 00B8C75C1A364DCE00C188E7 /* ImageSourceHelpers.swift */; };
 		00B8C7961A3650EE00C188E7 /* Gifu.h in Headers */ = {isa = PBXBuildFile; fileRef = 00B8C7951A3650EE00C188E7 /* Gifu.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		EAF49C7F1A3A4DE000B395DF /* UIImageExtension.swift in Sources */ = {isa = PBXBuildFile; fileRef = EAF49C7E1A3A4DE000B395DF /* UIImageExtension.swift */; };
-		EAF49C811A3A4FAA00B395DF /* FunctionalHelpers.swift in Sources */ = {isa = PBXBuildFile; fileRef = EAF49C801A3A4FAA00B395DF /* FunctionalHelpers.swift */; };
 		EAF49CB11A3B6EEB00B395DF /* AnimatedFrame.swift in Sources */ = {isa = PBXBuildFile; fileRef = EAF49CB01A3B6EEB00B395DF /* AnimatedFrame.swift */; };
 /* End PBXBuildFile section */
 
@@ -36,7 +34,6 @@
 /* Begin PBXFileReference section */
 		0036ABB61BBD1D0B00C6CC3D /* mugen.gif */ = {isa = PBXFileReference; lastKnownFileType = image.gif; name = mugen.gif; path = Demo/demo/Images.xcassets/mugen.dataset/mugen.gif; sourceTree = SOURCE_ROOT; };
 		0036ABB81BBD1D1400C6CC3D /* nailed.gif */ = {isa = PBXFileReference; lastKnownFileType = image.gif; name = nailed.gif; path = Demo/demo/Images.xcassets/nailed.dataset/nailed.gif; sourceTree = SOURCE_ROOT; };
-		004529911BD82209006493BF /* Runes.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = Runes.swift; path = Carthage/Checkouts/Runes/Source/Runes.swift; sourceTree = SOURCE_ROOT; };
 		005656EC1A6F14D6008A0ED1 /* Animator.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Animator.swift; sourceTree = "<group>"; };
 		005656EE1A6F1C26008A0ED1 /* AnimatableImageView.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AnimatableImageView.swift; sourceTree = "<group>"; };
 		007E08431BD95E6200883D0C /* ArrayExtension.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ArrayExtension.swift; sourceTree = "<group>"; };
@@ -49,7 +46,6 @@
 		00B8C75C1A364DCE00C188E7 /* ImageSourceHelpers.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ImageSourceHelpers.swift; sourceTree = "<group>"; };
 		00B8C7951A3650EE00C188E7 /* Gifu.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Gifu.h; sourceTree = "<group>"; };
 		EAF49C7E1A3A4DE000B395DF /* UIImageExtension.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = UIImageExtension.swift; sourceTree = "<group>"; };
-		EAF49C801A3A4FAA00B395DF /* FunctionalHelpers.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = FunctionalHelpers.swift; sourceTree = "<group>"; };
 		EAF49CB01A3B6EEB00B395DF /* AnimatedFrame.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = AnimatedFrame.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -94,8 +90,6 @@
 		007E08411BD95C0200883D0C /* Helpers */ = {
 			isa = PBXGroup;
 			children = (
-				004529911BD82209006493BF /* Runes.swift */,
-				EAF49C801A3A4FAA00B395DF /* FunctionalHelpers.swift */,
 				00B8C75C1A364DCE00C188E7 /* ImageSourceHelpers.swift */,
 			);
 			name = Helpers;
@@ -299,10 +293,8 @@
 				005656EF1A6F1C26008A0ED1 /* AnimatableImageView.swift in Sources */,
 				005656ED1A6F14D6008A0ED1 /* Animator.swift in Sources */,
 				009BD1441BBC93C800FC982B /* CGSizeExtension.swift in Sources */,
-				004529921BD82209006493BF /* Runes.swift in Sources */,
 				EAF49CB11A3B6EEB00B395DF /* AnimatedFrame.swift in Sources */,
 				00B8C75F1A364DCE00C188E7 /* ImageSourceHelpers.swift in Sources */,
-				EAF49C811A3A4FAA00B395DF /* FunctionalHelpers.swift in Sources */,
 				007E08441BD95E6200883D0C /* ArrayExtension.swift in Sources */,
 				EAF49C7F1A3A4DE000B395DF /* UIImageExtension.swift in Sources */,
 			);

Source/AnimatableImageView.swift

@@ -52,7 +52,8 @@ public class AnimatableImageView: UIImageView {
   /// - parameter imageName: The name of the GIF file. The method looks for the file in the app bundle.
   public func prepareForAnimation(imageNamed imageName: String) {
     let imagePath = NSBundle.mainBundle().bundleURL.URLByAppendingPathComponent(imageName)
-    prepareForAnimation <^> NSData(contentsOfURL: imagePath)
+    guard let data = NSData(contentsOfURL: imagePath) else { return }
+    prepareForAnimation(imageData: data)
   }
 
   /// Prepares the frames using raw GIF image data, without starting the animation.

Source/Animator.swift

@@ -55,7 +55,7 @@ class Animator {
     frameCount = Int(CGImageSourceGetCount(imageSource))
     let framesToProcess = min(frameCount, maxFrameCount)
     animatedFrames.reserveCapacity(framesToProcess)
-    animatedFrames = (0..<framesToProcess).reduce([]) { $0 + pure(prepareFrame($1)) }
+    animatedFrames = (0..<framesToProcess).reduce([]) { $0 + [prepareFrame($1)] }
     currentPreloadIndex = framesToProcess
   }
 

Source/FunctionalHelpers.swift

@@ -1,20 +0,0 @@
-func <^> <T, U>(@noescape f: T -> U, a: T?) -> U? {
-  return a.map(f)
-}
-func <*> <T, U>(f: (T -> U)?, a: T?) -> U? {
-  return a.apply(f)
-}
-
-func >>- <T, U>(a: T?, @noescape f: T -> U?) -> U? {
-  return a.flatMap(f)
-}
-
-extension Optional {
-  func apply<U>(f: (Wrapped -> U)?) -> U? {
-    return f.flatMap { self.map($0) }
-  }
-}
-
-func pure<T>(a: T) -> [T] {
-  return [a]
-}

Source/ImageSourceHelpers.swift

@@ -11,11 +11,12 @@ let defaultDuration: Double = 0
 func CGImageSourceGIFFrameDuration(imageSource: CGImageSource, index: Int) -> NSTimeInterval {
   if !imageSource.isAnimatedGIF { return 0.0 }
 
-  let duration = imageSource.GIFPropertiesAtIndex(index)
+  guard let properties = imageSource.GIFPropertiesAtIndex(index),
-    >>- durationFromGIFProperties
+    let duration = durationFromGIFProperties(properties),
-    >>- capDuration
+    let cappedDuration = capDuration(duration)
+    else { return defaultDuration }
 
-  return duration ?? defaultDuration
+  return cappedDuration
 }
 
 /// Ensures that a duration is never smaller than a threshold value.

Source/Info.plist

@@ -19,7 +19,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>87</string>
+	<string>91</string>
 	<key>NSPrincipalClass</key>
 	<string></string>
 </dict>