(Objective-C) Zip Files in a Date Range

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Demonstrates how to use the Zip.MinDate and Zip.MaxDate properties to zip only those files with a last-modified date within a date range.

Note: This example requires Chilkat v10.0.0 or greater.

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

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

BOOL success;

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

NSString *zipPath = @"c:/temp/qa_output/out.zip";

// Initialize the zip object with the path of the .zip to be created.
[zip NewZip: zipPath];

// The MinDate and MaxDate properties use the timestamp date/time string format.
// Here are some examples:
// YYYY-MM-DD (e.g., 2024-07-31)
// YYYY-MM-DDTHH:MM:SS�HH:MM (e.g., 2024-07-31T12:34:56+02:00)
// 2024-07-31T12:34:56Z (the "Z" denotes Zulu time, or UTC)

// Only append files having a last-modified date greater than 1-Jan-2017
zip.MinDate = @"2017-01-01T00:00:00Z";

// Also, only append files having a last-modified date less than the end of 2020
zip.MaxDate = @"2020-12-31T23:59:59Z";

// You don't need to specify both MinDate and MaxDate.
// You can specify only one or the other if needed.

// The MinDate/MaxDate properties apply to all of the Chilkat methods for appending files.

// Recursively append to the zip object the paths of the files and directories in a directory tree.
// At this point we are not creating the .zip, nor are we reading the contents of the files.
// We are simply appending references to the files and directories in the local filesystem
// that will get processed when WriteZip is called.
BOOL recurse = YES;
success = [zip AppendFiles: @"c:/temp/files_to_zip" recurse: recurse];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

zip.FileName = zipPath;
success = [zip WriteZip];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

[zip CloseZip];

NSLog(@"%@",@"Success");