Make all zip functions class functions for nicer syntax

Zip/QuickZip.swift

@@ -21,7 +21,7 @@ extension Zip {
      
      - returns: NSURL of the destination folder.
      */
-    public func quickUnzipFile(path: NSURL) throws -> NSURL {
+    public class func quickUnzipFile(path: NSURL) throws -> NSURL {
         return try quickUnzipFile(path, progress: nil)
     }
     
@@ -35,7 +35,8 @@ extension Zip {
      
      - returns: NSURL of the destination folder.
      */
-    public func quickUnzipFile(path: NSURL, progress: ((progress: Double) -> ())?) throws -> NSURL {
+    public class func quickUnzipFile(path: NSURL, progress: ((progress: Double) -> ())?) throws -> NSURL {
+        let fileManager = NSFileManager.defaultManager()
         guard let fileExtension = path.pathExtension, let fileName = path.lastPathComponent else {
             throw ZipError.UnzipFail
         }
@@ -58,7 +59,7 @@ extension Zip {
     
     - returns: NSURL of the destination folder.
     */
-    public func quickZipFiles(paths: [NSURL], fileName: String) throws -> NSURL {
+    public class func quickZipFiles(paths: [NSURL], fileName: String) throws -> NSURL {
         return try quickZipFiles(paths, fileName: fileName, progress: nil)
     }
 
@@ -73,7 +74,8 @@ extension Zip {
     
     - returns: NSURL of the destination folder.
     */
-    public func quickZipFiles(paths: [NSURL], fileName: String, progress: ((progress: Double) -> ())?) throws -> NSURL {
+    public class func quickZipFiles(paths: [NSURL], fileName: String, progress: ((progress: Double) -> ())?) throws -> NSURL {
+        let fileManager = NSFileManager.defaultManager()
         let documentsUrl = fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0] as NSURL
         let destinationUrl = documentsUrl.URLByAppendingPathComponent("\(fileName).zip")
         try self.zipFiles(paths, zipFilePath: destinationUrl, password: nil, progress: progress)

Zip/Zip.swift

@@ -31,9 +31,6 @@ public enum ZipError: ErrorType {
 /// Zip class
 public class Zip {
     
-    // File manager
-    let fileManager = NSFileManager.defaultManager()
-    
     // MARK: Lifecycle
     
     /**
@@ -58,8 +55,11 @@ public class Zip {
      - throws: Error if unzipping fails or if fail is not found. Can be printed with a description variable.
      */
 
-    public func unzipFile(zipFilePath: NSURL, destination: NSURL, overwrite: Bool, password: String?, progress: ((progress: Double) -> ())?) throws {
+    public class func unzipFile(zipFilePath: NSURL, destination: NSURL, overwrite: Bool, password: String?, progress: ((progress: Double) -> ())?) throws {
         
+        // File manager
+        let fileManager = NSFileManager.defaultManager()
+
         // Check whether a zip file exists at path.
         guard let path = zipFilePath.path, let destinationPath = destination.path else {
             throw ZipError.FileNotFound
@@ -185,7 +185,10 @@ public class Zip {
 
     - throws: Error if zipping fails.
     */
-    public func zipFiles(paths: [NSURL], zipFilePath: NSURL, password: String?, progress: ((progress: Double) -> ())?) throws {
+    public class func zipFiles(paths: [NSURL], zipFilePath: NSURL, password: String?, progress: ((progress: Double) -> ())?) throws {
+        
+        // File manager
+        let fileManager = NSFileManager.defaultManager()
         
         // Check whether a zip file exists at path.
         guard let destinationPath = zipFilePath.path else {

ZipTests/ZipTests.swift

@@ -22,7 +22,7 @@ class ZipTests: XCTestCase {
     func testQuickUnzip() {
         do {
             let filePath = NSBundle(forClass: ZipTests.self).URLForResource("bb8", withExtension: "zip")!
-            let destinationURL = try Zip().quickUnzipFile(filePath)
+            let destinationURL = try Zip.quickUnzipFile(filePath)
             let fileManager = NSFileManager.defaultManager()
             XCTAssertTrue(fileManager.fileExistsAtPath(destinationURL.path!))
         }
@@ -35,7 +35,7 @@ class ZipTests: XCTestCase {
         do {
             let filePathURL = NSBundle(forClass: ZipTests.self).resourcePath
             let filePath = NSURL(string:"\(filePathURL!)/bb9.zip")
-            let destinationURL = try Zip().quickUnzipFile(filePath!)
+            let destinationURL = try Zip.quickUnzipFile(filePath!)
             let fileManager = NSFileManager.defaultManager()
             XCTAssertFalse(fileManager.fileExistsAtPath(destinationURL.path!))
         }
@@ -47,7 +47,7 @@ class ZipTests: XCTestCase {
     func testQuickUnzipNonZipPath() {
         do {
             let filePath = NSBundle(forClass: ZipTests.self).URLForResource("3crBXeO", withExtension: "gif")!
-            let destinationURL = try Zip().quickUnzipFile(filePath)
+            let destinationURL = try Zip.quickUnzipFile(filePath)
             let fileManager = NSFileManager.defaultManager()
             XCTAssertFalse(fileManager.fileExistsAtPath(destinationURL.path!))
         }
@@ -59,7 +59,7 @@ class ZipTests: XCTestCase {
     func testQuickUnzipProgress() {
         do {
             let filePath = NSBundle(forClass: ZipTests.self).URLForResource("bb8", withExtension: "zip")!
-            try Zip().quickUnzipFile(filePath, progress: { (progress) -> () in
+            try Zip.quickUnzipFile(filePath, progress: { (progress) -> () in
                 XCTAssert(true)
             })
         }
@@ -71,7 +71,7 @@ class ZipTests: XCTestCase {
     func testQuickUnzipOnlineURL() {
         do {
             let filePath = NSURL(string: "http://www.google.com/google.zip")!
-            let destinationURL = try Zip().quickUnzipFile(filePath)
+            let destinationURL = try Zip.quickUnzipFile(filePath)
             let fileManager = NSFileManager.defaultManager()
             XCTAssertFalse(fileManager.fileExistsAtPath(destinationURL.path!))
         }
@@ -84,7 +84,7 @@ class ZipTests: XCTestCase {
         do {
             let filePath = NSBundle(forClass: ZipTests.self).URLForResource("bb8", withExtension: "zip")!
             let documentsFolder = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0] as NSURL
-            try Zip().unzipFile(filePath, destination: documentsFolder, overwrite: true, password: "password", progress: { (progress) -> () in
+            try Zip.unzipFile(filePath, destination: documentsFolder, overwrite: true, password: "password", progress: { (progress) -> () in
                 print(progress)
             })
             let fileManager = NSFileManager.defaultManager()
@@ -99,7 +99,7 @@ class ZipTests: XCTestCase {
         do {
             let imageURL1 = NSBundle(forClass: ZipTests.self).URLForResource("3crBXeO", withExtension: "gif")!
             let imageURL2 = NSBundle(forClass: ZipTests.self).URLForResource("kYkLkPf", withExtension: "gif")!
-            let destinationURL = try Zip().quickZipFiles([imageURL1, imageURL2], fileName: "archive")
+            let destinationURL = try Zip.quickZipFiles([imageURL1, imageURL2], fileName: "archive")
             let fileManager = NSFileManager.defaultManager()
             XCTAssertTrue(fileManager.fileExistsAtPath(destinationURL.path!))
         }
@@ -114,7 +114,7 @@ class ZipTests: XCTestCase {
             let imageURL2 = NSBundle(forClass: ZipTests.self).URLForResource("kYkLkPf", withExtension: "gif")!
             let documentsFolder = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0] as NSURL
             let zipFilePath = documentsFolder.URLByAppendingPathComponent("archive.zip")
-            try Zip().zipFiles([imageURL1, imageURL2], zipFilePath: zipFilePath, password: nil, progress: { (progress) -> () in
+            try Zip.zipFiles([imageURL1, imageURL2], zipFilePath: zipFilePath, password: nil, progress: { (progress) -> () in
                 print(progress)
             })
             let fileManager = NSFileManager.defaultManager()