(Objective-C) Add a Common Root Directory to ZIP Entries Using PathPrefix

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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.

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#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 = NO, 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.");