Objective-C

Create Zip in a BinData Object

See more Zip Examples

Recursively appends files in a directory tree and writes a zip archive into a Chilkat BinData object. Objective-C

#import <CkoZip.h>
#import <CkoBinData.h>
#import <NSString.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];

//  Initialize the zip object.  Because we will never actually write a zip file to the filesystem,
//  the filepath passed to NewZip does not matter.
success = [zip NewZip: @"x.zip"];
if (success != YES) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

//  Append a directory tree.  The call to 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 WriteBd, WriteZip, or WriteZipAndClose 
//  is called, the referenced files are streamed and compressed
//  into the .zip output file (or BinData object).

BOOL recurse = YES;
success = [zip AppendFiles: @"c:/temp/a/*" recurse: recurse];
if (success != YES) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

//  Write the zip archive into the bdZip object.
CkoBinData *bdZip = [[CkoBinData alloc] init];
success = [zip WriteBd: bdZip];
if (success != YES) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

//  We could directly access the bytes of the zip archive, or perhaps
//  get the zip bytes in base64 format.
NSString *zipAsBase64 = [bdZip GetEncoded: @"base64"];
NSLog(@"%@",zipAsBase64);

//  Or the zip can be used by some other Chilkat method call that accepts
//  a BinData object as an argument.