Objective-C

Unzip Files in a Date Range

See more Zip Examples

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

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

Objective-C

#import <CkoZip.h>

BOOL success = NO;

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

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

success = [zip OpenZip: @"qa_data/zips/sample.zip"];
if (success != YES) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

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

//  Also, only unzip 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 unzipping.

int numUnzipped = [[zip Unzip: @"c:/temp/unzipDir"] intValue];
if (numUnzipped < 0) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

[zip CloseZip];