(Swift) Download a Zip from a URL and OpenBd. (No .zip file is created)

Demonstrates how to download a .zip from a URL, opens the Zip, and gets the contents of a file. No file is ever written.

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

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    var success: Bool = false

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

    let http = CkoHttp()!

    let bd = CkoBinData()!

    // This URL is valid and can be tested...
    success = http.quickGetBd("http://chilkatdownload.com/example_data/hamlet.zip", binData: bd)
    if http.lastMethodSuccess == false {
        print("\(http.lastErrorText!)")
        return
    }

    let zip = CkoZip()!

    // Open the zip from the bytes contained in bd.
    success = zip.openBd(bd)
    if success == false {
        print("\(zip.lastErrorText!)")
        return
    }

    // Get the entry for the file we want..
    let entry = CkoZipEntry()!
    success = zip.entry(of: "hamlet.xml", entry: entry)
    if success == false {
        print("\(zip.lastErrorText!)")
        return
    }

    // Convert all line endings to CRLF (if needed)
    var lineEndingBehavior: Int = 2
    var xmlStr: String? = entry.unzip(toString: lineEndingBehavior, srcCharset: "utf-8")
    if entry.lastMethodSuccess != true {
        print("\(entry.lastErrorText!)")
        return
    }

    // The XML in this case is about 274K, so let's just examine the last 20 lines...
    let sb = CkoStringBuilder()!
    sb.append(xmlStr)

    print("\(sb.lastNLines(20, bCrlf: true)!)")

}