(Objective-C) Create a Zip Entirely in Memory

Demonstrates how to create a .zip from in-memory byte data and strings, and to write the .zip to an in-memory image.

Chilkat Objective-C Library Downloads MAC OS X (Cocoa) Libs iOS Libs

#import <CkoCrypt2.h>
#import <CkoZip.h>
#import <CkoZipEntry.h>
#import <CkoFileAccess.h>

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

CkoCrypt2 *crypt = [[CkoCrypt2 alloc] init];
CkoZip *zip = [[CkoZip alloc] init];

BOOL success = [zip NewZip: @"test.zip"];
if (success != YES) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

// Add the bytes 0x00 0x01 0x02 0x03 ... 0x0F as a file in the .zip
NSData binFileData;
binFileData = [crypt Decode: @"000102030405060708090A0B0C0D0E0F" encoding: @"hex"];
CkoZipEntry *entry = [zip AppendData: @"binaryData.dat" data: binFileData];

// Add the string "Hello World!" to the .zip
entry = [zip AppendString2: @"helloWorld.txt" str: @"Hello World!" charset: @"utf-8"];

NSData zipFileInMemory;
zipFileInMemory = [zip WriteToMemory];

// We could save these files to a file, and it is a valid .zip
CkoFileAccess *fac = [[CkoFileAccess alloc] init];
success = [fac WriteEntireFile: @"test.zip" fileData: zipFileInMemory];
if (success != YES) {
    NSLog(@"%@",fac.LastErrorText);
    return;
}

NSLog(@"%@",@"Zip Created!");