Adding zip and unzip functions

examples/Sample/Sample/Base.lproj/Main.storyboard

@@ -42,9 +42,21 @@
                                     <barButtonItem title="0 Selected" style="plain" id="dci-jS-Xlf">
                                         <color key="tintColor" red="0.1333333333" green="0.1333333333" blue="0.1333333333" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                     </barButtonItem>
+                                    <barButtonItem style="plain" systemItem="flexibleSpace" id="331-sz-9FL"/>
+                                    <barButtonItem title="Zip" id="1qo-CZ-Gah">
+                                        <connections>
+                                            <action selector="zipSelection:" destination="dpw-R4-j8a" id="ujU-jh-wca"/>
+                                        </connections>
+                                    </barButtonItem>
+                                    <barButtonItem width="42" style="plain" systemItem="fixedSpace" id="Sp9-gV-7ef"/>
+                                    <barButtonItem title="Unzip" id="AXE-aZ-PBA">
+                                        <connections>
+                                            <action selector="unzipSelection:" destination="dpw-R4-j8a" id="vuT-QM-DUX"/>
+                                        </connections>
+                                    </barButtonItem>
                                 </items>
                             </toolbar>
-                            <tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="44" sectionHeaderHeight="28" sectionFooterHeight="28" translatesAutoresizingMaskIntoConstraints="NO" id="vkM-Ih-ncL">
+                            <tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" allowsMultipleSelection="YES" rowHeight="44" sectionHeaderHeight="28" sectionFooterHeight="28" translatesAutoresizingMaskIntoConstraints="NO" id="vkM-Ih-ncL">
                                 <rect key="frame" x="0.0" y="64" width="600" height="492"/>
                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
                                 <connections>
@@ -68,6 +80,8 @@
                     <connections>
                         <outlet property="selectionCounter" destination="dci-jS-Xlf" id="uVp-Mf-mdx"/>
                         <outlet property="tableView" destination="vkM-Ih-ncL" id="Pw4-pv-J01"/>
+                        <outlet property="unzipButton" destination="AXE-aZ-PBA" id="fqk-D1-e4c"/>
+                        <outlet property="zipButton" destination="1qo-CZ-Gah" id="OSm-ha-Ig5"/>
                     </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="pqG-S7-8Xl" userLabel="First Responder" sceneMemberID="firstResponder"/>

examples/Sample/Sample/FileBrowser.swift

@@ -7,52 +7,68 @@
 //
 
 import UIKit
+import Zip
 
-class FileBrowser: UIViewController {
+class FileBrowser: UIViewController, UITableViewDataSource, UITableViewDelegate {
     
+    // IBOutlets
     @IBOutlet weak var tableView: UITableView!
-    
     @IBOutlet weak var selectionCounter: UIBarButtonItem!
+    @IBOutlet weak var zipButton: UIBarButtonItem!
+    @IBOutlet weak var unzipButton: UIBarButtonItem!
     
     let fileManager = NSFileManager.defaultManager()
     
-    
     var path: NSURL? {
         didSet {
-            if let filePath = path {
-                var tempFiles = [String]()
-                do  {
-                    self.title = filePath.lastPathComponent
-                    tempFiles = try self.fileManager.contentsOfDirectoryAtPath(filePath.path!)
-                } catch {
-                    if path == "/System" {
-                        tempFiles = ["Library"]
-                    }
-                    if path == "/Library" {
-                        tempFiles = ["Preferences"]
-                    }
-                    if path == "/var" {
-                        tempFiles = ["mobile"]
-                    }
-                    if path == "/usr" {
-                        tempFiles = ["lib", "libexec", "bin"]
-                    }
-
-                }
-                self.files = tempFiles.sort(){$0 < $1}
-            }
+            updateFiles()
         }
     }
 
+    
     var files = [String]()
     
+    var selectedFiles = [String]()
+    
+    //MARK: Lifecycle
+    
     override func viewDidLoad() {
         if self.path == nil {
             let documentsUrl = fileManager.URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0] as NSURL
             self.path = documentsUrl
         }
+        updateSelection()
+    }
+    
+    //MARK: File manager
+    
+    func updateFiles() {
+        if let filePath = path {
+            var tempFiles = [String]()
+            do  {
+                self.title = filePath.lastPathComponent
+                tempFiles = try self.fileManager.contentsOfDirectoryAtPath(filePath.path!)
+            } catch {
+                if path == "/System" {
+                    tempFiles = ["Library"]
+                }
+                if path == "/Library" {
+                    tempFiles = ["Preferences"]
+                }
+                if path == "/var" {
+                    tempFiles = ["mobile"]
+                }
+                if path == "/usr" {
+                    tempFiles = ["lib", "libexec", "bin"]
+                }
+            }
+            self.files = tempFiles.sort(){$0 < $1}
+            tableView.reloadData()
+        }
     }
     
+    //MARK: UITableView Data Source and Delegate
+    
     func numberOfSectionsInTableView(tableView: UITableView) -> Int {
         return 1
     }
@@ -70,7 +86,9 @@ class FileBrowser: UIViewController {
         guard let path = path else {
             return cell
         }
-        let newPath = path.URLByAppendingPathComponent(files[indexPath.row]).path!
+        cell.selectionStyle = .None
+        let filePath = files[indexPath.row]
+        let newPath = path.URLByAppendingPathComponent(filePath).path!
         var isDirectory: ObjCBool = false
         fileManager.fileExistsAtPath(newPath, isDirectory: &isDirectory)
         cell.textLabel?.text = files[indexPath.row]
@@ -80,12 +98,69 @@ class FileBrowser: UIViewController {
         else {
             cell.imageView?.image = UIImage(named: "File")
         }
+        cell.backgroundColor = (selectedFiles.contains(filePath)) ? UIColor(white: 0.9, alpha: 1.0):UIColor.whiteColor()
         return cell
     }
     
-    required init?(coder aDecoder: NSCoder) {
-        super.init(coder: aDecoder)
+    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
+        let filePath = files[indexPath.row]
+        if let index = selectedFiles.indexOf(filePath) where selectedFiles.contains(filePath) {
+            selectedFiles.removeAtIndex(index)
+        }
+        else {
+            selectedFiles.append(filePath)
+        }
+        updateSelection()
+    }
+    
+    func updateSelection() {
+        tableView.reloadData()
+        selectionCounter.title = "\(selectedFiles.count) Selected"
+
+        zipButton.enabled = (selectedFiles.count > 0)
+        if (selectedFiles.count == 1) {
+            let filePath = selectedFiles.first
+            let pathExtension = path!.URLByAppendingPathComponent(filePath!).pathExtension
+            if pathExtension == "zip" {
+                unzipButton.enabled = true
+            }
+            else {
+                unzipButton.enabled = false
+            }
+        }
+        else {
+            unzipButton.enabled = false
+        }
     }
     
+    //MARK: Actions
+    
+    @IBAction func unzipSelection(sender: AnyObject) {
+        let filePath = selectedFiles.first
+        let pathURL = path!.URLByAppendingPathComponent(filePath!)
+        do {
+            try Zip().quickUnzipFile(pathURL)
+            self.selectedFiles.removeAll()
+            updateSelection()
+            updateFiles()
+        } catch {
+            print("ERROR")
+        }
+    }
+    
+    @IBAction func zipSelection(sender: AnyObject) {
+        var urlPaths = [NSURL]()
+        for filePath in selectedFiles {
+            urlPaths.append(path!.URLByAppendingPathComponent(filePath))
+        }
+        do {
+            try Zip().quickZipFiles(urlPaths, fileName: "Archive")
+            self.selectedFiles.removeAll()
+            updateSelection()
+            updateFiles()
+        } catch {
+            print("ERROR")
+        }
+    }
 
 }