Objective-C

Add a Common Root Directory to ZIP Entries Using PathPrefix

See more Zip Examples

This example demonstrates how to use the PathPrefix property to prepend a common directory path to all entries added to a ZIP archive.

The PathPrefix value is prepended to the stored ZIP paths for subsequently added entries.

This is useful when:

• Creating ZIP archives that extract beneath a single root directory
• Packaging applications or projects into a named top-level folder
• Avoiding extraction directly into the current directory
• Organizing ZIP contents beneath a common parent directory

Suppose the local filesystem contains:

c:/MyProject/src/main.cpp
c:/MyProject/src/util.cpp
c:/MyProject/docs/readme.txt

And suppose the following code is executed:

zip.PathPrefix = "MyProject/";

Then the ZIP archive will contain:

MyProject/src/main.cpp
MyProject/src/util.cpp
MyProject/docs/readme.txt

Without a PathPrefix, the ZIP archive would instead contain:

src/main.cpp
src/util.cpp
docs/readme.txt

The PathPrefix is applied only to entries added after the property is set.

Objective-C

#import <CkoZip.h>

BOOL success = NO;

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

//  Create a new ZIP archive.
success = [zip NewZip: @"MyProject.zip"];
if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

//  Prepend "MyProject/" to all subsequently added ZIP entries.
//  
//  This causes all files to extract beneath a top-level
//  directory named "MyProject".
zip.PathPrefix = @"MyProject/";

//  Recursively add project files.
//  
//  Because saveExtraPath = false, the stored ZIP paths
//  will normally begin with:
//  
//      src/
//      docs/
//  
//  But because PathPrefix = "MyProject/",
//  the final ZIP paths become:
//  
//      MyProject/src/
//      MyProject/docs/
//  
BOOL recurse = YES;
success = [zip AppendFiles: @"c:/MyProject/*" recurse: recurse];

if (success == NO) {
    NSLog(@"%@",zip.LastErrorText);
    return;
}

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

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