(Swift) Find a ZIP Entry by Exact Path Using EntryOf

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This example demonstrates how to use the EntryOf method to find a ZIP entry whose stored path exactly matches a specified path.

Unlike EntryMatching, which performs wildcard matching, EntryOf performs an exact path lookup.

This method is useful when:

• The exact ZIP path is already known
• Retrieving a specific file or directory entry
• Verifying whether a particular entry exists in the ZIP archive

Suppose the ZIP archive contains:

docs/
docs/readme.txt
docs/manual.pdf
images/logo.png
data/config/settings.json

ZIP archives may optionally contain explicit directory entries such as docs/. These directory entries can also be retrieved using EntryOf.

The example:

• Finds an exact file entry
• Finds an exact directory entry
• Demonstrates the difference between file and directory entries

Note: This example requires Chilkat v11.0.0 or greater.

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func chilkatTest() {
    var success: Bool = false

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    success = false

    // Open an existing ZIP archive.
    let zip = CkoZip()!

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

    let entry = CkoZipEntry()!

    // ------------------------------------------------------------
    // Find a specific file entry by its exact ZIP path.

    success = zip.entry(of: "docs/readme.txt", entry: entry)

    if success == true {
        print("Found file entry:")
        print("  FileName = \(entry.fileName!)")
        print("  IsDirectory = \(entry.isDirectory)")
        print("")
    }

    // ------------------------------------------------------------
    // Find a directory entry.
    // 
    // ZIP archives may optionally contain explicit directory entries.
    // In this example, "docs/" is a separate directory entry.

    success = zip.entry(of: "docs/", entry: entry)

    if success == true {
        print("Found directory entry:")
        print("  FileName = \(entry.fileName!)")
        print("  IsDirectory = \(entry.isDirectory)")
        print("")
    }

    // ------------------------------------------------------------
    // Attempt to find a non-existent entry.

    success = zip.entry(of: "images/missing.png", entry: entry)

    if success == false {
        print("The entry images/missing.png was not found.")
    }

    zip.close()

    print("Done.")

}