Create Zip Excluding Files Matching Patterns

How to create a .zip archive excluding (skipping) files that match a set of wildcarded patterns.

Download: Chilkat Cocoa Objective-C Libraries

NSMutableString *strOutput = [NSMutableString stringWithCapacity:1000];

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

BOOL success;

//  Any string unlocks the component for the 1st 30-days.
success = [zip UnlockComponent: @"Anything for 30-day trial"];
if (success != YES) {
    [strOutput appendString: zip.LastErrorText];
    [strOutput appendString: @"\n"];
    self.mainTextField.stringValue = strOutput;
    return;
}

success = [zip NewZip: @"test.zip"];
if (success != YES) {
    [strOutput appendString: zip.LastErrorText];
    [strOutput appendString: @"\n"];
    self.mainTextField.stringValue = strOutput;
    return;
}

//  Create a string array object with our set of filename patterns
//  to be excluded:
CkoStringArray *sa = [[[CkoStringArray alloc] init] autorelease];
[sa Append: @"*.bak"];
[sa Append: @"*.tmp"];

//  Tell the zip object to use these exclusions:
[zip SetExclusions: sa];

//  Append a directory tree.  The AppendFiles does
//  not read the file contents or append them to the zip
//  object in memory.  It simply appends references
//  to the files so that when WriteZip (or WriteZipAndClose,
//  or WriteExe, etc.) is called, the files are compressed
//  and encrypted.
BOOL recurse;
recurse = YES;
[zip AppendFiles: @"/temp/a/*" recurse: recurse];

success = [zip WriteZipAndClose];
if (success != YES) {
    [strOutput appendString: zip.LastErrorText];
    [strOutput appendString: @"\n"];
    self.mainTextField.stringValue = strOutput;
    return;
}

[strOutput appendString: @"Zip Created!"];
[strOutput appendString: @"\n"];

self.mainTextField.stringValue = strOutput;