(Swift 2) CanonicalizeUrl

The CanonicalizeUrl method is a utility function that canonicalizes a URL into a standard form to avoid duplicates. For example, "http://www.chilkatsoft.com/" and "http://www.chilkatsoft.com/default.asp" are the same URL.

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

func chilkatTest() {
    let spider = CkoSpider()

    // Does a DNS lookup to find the default domain, which may or may not include the "www." depending on the DNS results.
    // Also domain names are converted to lowercase:
    print("\(spider.CanonicalizeUrl("http://www.ChilkatSoft.com/"))")

    // CanonicalizeUrl will drop the HTML fragment:
    print("\(spider.CanonicalizeUrl("http://www.chilkatsoft.com/purchase2.asp#buyZip"))")

    // If a username/password is in the URL, it gets dropped:
    print("\(spider.CanonicalizeUrl("http://username:password@www.chilkatsoft.com/purchase2.asp#buyZip"))")

    // Port 80 and 443 are dropped:
    print("\(spider.CanonicalizeUrl("http://www.chilkatsoft.com:80/purchase2.asp"))")
    print("\(spider.CanonicalizeUrl("https://www.paypal.com:443/"))")

    // Removes default pages:
    // default.asp, index.html, index.htm, default.html, index.htm, default.htm
    // index.php, index.asp, default.php, .cfm, .aspx, ,php3, .pl, .cgi, .txt, .shtml, .phtml
    print("\(spider.CanonicalizeUrl("http://www.chilkatsoft.com/index.asp"))")
    print("\(spider.CanonicalizeUrl("http://www.chilkatsoft.com/index.asp"))")
    print("\(spider.CanonicalizeUrl("http://www.chilkatsoft.com/index.php"))")
    print("\(spider.CanonicalizeUrl("http://www.chilkatsoft.com/index.pl"))")
    print("\(spider.CanonicalizeUrl("http://www.chilkatsoft.com/index.htm"))")

    // Output:
    // http://chilkatsoft.com/
    // http://chilkatsoft.com/purchase2.asp
    // http://chilkatsoft.com/purchase2.asp
    // http://chilkatsoft.com/purchase2.asp
    // https://www.paypal.com/
    // http://chilkatsoft.com/
    // http://chilkatsoft.com/
    // http://chilkatsoft.com/
    // http://chilkatsoft.com/
    // http://chilkatsoft.com

}