(Swift 3,4,5...) Handling Namespaces in XML Tags

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Demonstrates new features added in Chilkat v9.5.0.77 for helping with namespace prefixed tags.

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func chilkatTest() {
    // First create some XML using namespace prefixed tags.

    // Create this XML. 
    // Use this online tool to generate the code from sample XML: 
    // Generate Code to Create XML

    // <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
    //    xmlns:scm="http://www.springcm.com/atlas/webservices/v201308/scm/">
    //    <soapenv:Header/>
    //    <soapenv:Body>
    //       <scm:AccountGetCurrent>
    //          <scm:token>123</scm:token>
    //       </scm:AccountGetCurrent>
    //    </soapenv:Body>
    // </soapenv:Envelope>

    let xml = CkoXml()!
    xml.tag = "soapenv:Envelope"
    xml.addAttribute("xmlns:soapenv", value: "http://schemas.xmlsoap.org/soap/envelope/")
    xml.addAttribute("xmlns:scm", value: "http://www.springcm.com/atlas/webservices/v201308/scm/")
    xml.updateChildContent("soapenv:Header", value: "")
    xml.updateChildContent("soapenv:Body|scm:AccountGetCurrent|scm:token", value: "123")

    // Go to the "Body" tag, regardless of namespace prefix.
    var xmlBody: CkoXml? = xml.findChild("*:Body")
    if xml.lastMethodSuccess != true {
        print("Body child not found.")
        return
    }

    // Get the full tag w/ namespace prefix:
    // Output is "soapenv:Body"
    print("\(xmlBody!.tag!)")

    // Get the namespace prefix:
    // Output is "soapenv"
    print("\(xmlBody!.tagNsPrefix!)")

    // Get the unprefixed tag:
    // Output is "Body"
    print("\(xmlBody!.tagUnprefixed!)")

    // Check to see if the unprefixed tag equals "Body"
    var isBodyTag: Bool = xmlBody!.tagUnpEquals("Body")
    print("isBodyTag = \(isBodyTag)")

    // Check to see if the namespace prefix equals "soapenv";
    var isSoapenv: Bool = xmlBody!.tagNsEquals("soapenv")
    print("isSoapenv = \(isSoapenv)")

    // Change just the namespace prefix of the tag
    xmlBody.tagNsPrefix = "se"
    // The tag has changed from "soapenv:Body" to "se:Body"
    print("\(xmlBody!.tag!)")

    // Change the unprefixed part of the tag.
    xmlBody.tagUnprefixed = "Bodie"
    // The tag has changed from "se:Body" to "se:Bodie"
    print("\(xmlBody!.tag!)")

    xmlBody = nil

}