(Swift) 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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func chilkatTest() {
    var success: Bool = false

    let zip = CkoZip()!

    // Create a new ZIP archive.
    success = zip.newZip("MyProject.zip")
    if success == false {
        print("\(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/
    // 
    var recurse: Bool = true
    success = zip.appendFiles("c:/MyProject/*", recurse: recurse)

    if success == false {
        print("\(zip.lastErrorText!)")
        return
    }

    // Write the ZIP archive and close it.
    success = zip.writeAndClose()
    if success == false {
        print("\(zip.lastErrorText!)")
        return
    }

    print("ZIP archive created successfully.")

}