ZipArchive/ObjectiveCExample/ObjectiveCExample/ViewController.m

//
//  ViewController.m
//  ObjectiveCExample
//
//  Created by Sean Soper on 10/23/15.
//
//

#import "ViewController.h"
#import "SSZipArchive.h"

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UITextField *passwordField;
@property (weak, nonatomic) IBOutlet UIButton *zipButton;
@property (weak, nonatomic) IBOutlet UIButton *unzipButton;
@property (weak, nonatomic) IBOutlet UIButton *resetButton;
@property (weak, nonatomic) IBOutlet UILabel *file1;
@property (weak, nonatomic) IBOutlet UILabel *file2;
@property (weak, nonatomic) IBOutlet UILabel *file3;
@property (copy, nonatomic) NSString *zipPath;

@end

@implementation ViewController

#pragma mark - Life Cycle
- (void)viewDidLoad {
    [super viewDidLoad];
    
    _file1.text = @"";
    _file2.text = @"";
    _file3.text = @"";
}

#pragma mark - IBAction
- (IBAction)zipPressed:(id)sender {
    NSString *sampleDataPath = [[NSBundle mainBundle].bundleURL
                                URLByAppendingPathComponent:@"Sample Data"
                                isDirectory:YES].path;
    _zipPath = [self tempZipPath];
    NSString *password = _passwordField.text;
    BOOL success = [SSZipArchive createZipFileAtPath:_zipPath
                             withContentsOfDirectory:sampleDataPath
                                 keepParentDirectory:NO
                                    compressionLevel:-1
                                            password:password.length > 0 ? password : nil
                                                 AES:YES
                                     progressHandler:nil];
    if (success) {
        NSLog(@"Success zip");
        _unzipButton.enabled = YES;
        _zipButton.enabled = NO;
    } else {
        NSLog(@"No success zip");
    }
    _resetButton.enabled = YES;
}

- (IBAction)unzipPressed:(id)sender {
    if (!_zipPath) {
        return;
    }
    NSString *unzipPath = [self tempUnzipPath];
    if (!unzipPath) {
        return;
    }
    NSString *password = _passwordField.text;
    BOOL success = [SSZipArchive unzipFileAtPath:_zipPath
                                   toDestination:unzipPath
                              preserveAttributes:YES
                                       overwrite:YES
                                  nestedZipLevel:0
                                        password:password.length > 0 ? password : nil
                                           error:nil
                                        delegate:nil
                                 progressHandler:nil
                               completionHandler:nil];
    if (success) {
        NSLog(@"Success unzip");
    } else {
        NSLog(@"No success unzip");
        return;
    }
    NSError *error = nil;
    NSMutableArray<NSString *> *items = [[[NSFileManager defaultManager]
                                          contentsOfDirectoryAtPath:unzipPath
                                          error:&error] mutableCopy];
    if (error) {
        return;
    }
    [items enumerateObjectsUsingBlock:^(NSString * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
        switch (idx) {
            case 0: {
                self.file1.text = obj;
                break;
            }
            case 1: {
                self.file2.text = obj;
                break;
            }
            case 2: {
                self.file3.text = obj;
                break;
            }
            default: {
                NSLog(@"Went beyond index of assumed files");
                break;
            }
        }
    }];
    _unzipButton.enabled = NO;
}

- (IBAction)resetPressed:(id)sender {
    _file1.text = @"";
    _file2.text = @"";
    _file3.text = @"";
    _zipButton.enabled = YES;
    _unzipButton.enabled = NO;
    _resetButton.enabled = NO;
}

#pragma mark - Private
- (NSString *)tempZipPath {
    NSString *path = [NSString stringWithFormat:@"%@/\%@.zip",
                      NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0],
                      [NSUUID UUID].UUIDString];
    return path;
}

- (NSString *)tempUnzipPath {
    NSString *path = [NSString stringWithFormat:@"%@/\%@",
                      NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0],
                      [NSUUID UUID].UUIDString];
    NSURL *url = [NSURL fileURLWithPath:path];
    NSError *error = nil;
    [[NSFileManager defaultManager] createDirectoryAtURL:url
                             withIntermediateDirectories:YES
                                              attributes:nil
                                                   error:&error];
    if (error) {
        return nil;
    }
    return url.path;
}

@end