【Swift】ZIP Foundationが便利！初心者でも簡単に使えます

(Homeフォルダ) % cd (Xcodeでプロジェクトを作成したフォルダ)
(Xcodeでプロジェクトを作成したフォルダ)% pod init

  # Comment the next line if you don't want to use dynamic frameworks
  use_frameworks!

pod 'ZIPFoundation', '~> 0.9'

(Xcodeでプロジェクトを作成したフォルダ)% pod install

Analyzing dependencies
Downloading dependencies
Installing ZIPFoundation (0.9.12)
Generating Pods project
Integrating client project

[!] Please close any current Xcode sessions and use `ZipApp.xcworkspace` for this project from now on.
Pod installation complete! There is 1 dependency from the Podfile and 1 total pod installed.

import ZIPFoundation

        do {
            try FileManager.default.zipItem(at: sourceURL, to: destinationURL, compressionMethod: .deflate)
        } catch {
            print("Creation of ZIP archive failed with error:\(error)")
        }

import UIKit
import ZIPFoundation

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let dir = FileManager.default.urls(
            for: .documentDirectory,
            in: .userDomainMask
        ).first!
        
        let fileURL = dir.appendingPathComponent("sample.txt")
        let zipURL = dir.appendingPathComponent("sample.zip")
        
        var result = createFile(fileURL.path)
        print(result)
        
        if result != false {
            fileZip(fileURL, zipURL)
        }
        
        // Do any additional setup after loading the view.
    }

    func fileZip(_ sourceURL: URL, _ destinationURL: URL){
        do {
            try FileManager.default.zipItem(at: sourceURL, to: destinationURL, compressionMethod: .deflate)
        } catch {
            print("Creation of ZIP archive failed with error:\(error)")
        }
    }
    
    func createFile(_ filePath: String) -> Bool {
            let fileManager = FileManager.default
            let result = fileManager.createFile(atPath: filePath,
                                                contents: nil,
                                                attributes: nil)
            return result
    }
}