(Objective-C) Add Text Files to a ZIP Using AddString

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This example demonstrates how to use the AddString method to add multiple text files directly from string variables into a ZIP archive.

Each string is converted to bytes using the specified character encoding and stored as a separate file entry within the ZIP archive.

This method is useful for dynamically generating small text files such as configuration files, reports, JSON documents, XML, or log files entirely in memory.

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#import <CkoZip.h>
#import <NSString.h>

BOOL success = NO;

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

success = [zip NewZip: @"stringEntries.zip"];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

// Add a README text file.
NSString *readmeText = @"This ZIP archive was created using AddString.";

success = [zip AddString: @"docs/readme.txt" content: readmeText charset: @"utf-8"];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

// Add a JSON configuration file.
NSString *jsonText = @"{ \"server\": \"example.com\", \"port\": 443 }";

success = [zip AddString: @"config/settings.json" content: jsonText charset: @"utf-8"];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

// Add a small XML document.
NSString *xmlText = @"<root><status>OK</status></root>";

success = [zip AddString: @"xml/status.xml" content: xmlText charset: @"utf-8"];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

// Write the ZIP archive to disk and close it.
success = [zip WriteZipAndClose];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

NSLog(@"%@",@"ZIP archive created successfully.");