(Go) Find XML Element where Attribute = Value

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Finds an XML element at a particular location where an attribute has a specified value.

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    // We have the following XML and wish to find the value of the time attribute where msg = "alert-from".

    // <cdr id="4e5d3e7f41bf6201ad81000c29703270" e164="6207">
    //     <user>
    //         <grp name="wfln" mode="active"/>
    //     </user>
    //     <event msg="setup-to" time="287069" e164="5034"/>
    //     <event msg="alert-from" time="287069" e164="5034"/>
    //     <event msg="rel-to" time="287079" e164="5034"/>
    // </cdr>

    var success bool

    // First, build the above XML:

    xml := chilkat.NewXml()
    xml.SetTag("cdr")
    xml.AddAttribute("id","4e5d3e7f41bf6201ad81000c29703270")
    xml.AddAttribute("e164","6207")
    xml.UpdateAttrAt("user|grp",true,"name","wfln")
    xml.UpdateAttrAt("user|grp",true,"mode","active")
    xml.UpdateAttrAt("event",true,"msg","setup-to")
    xml.UpdateAttrAt("event",true,"time","287069")
    xml.UpdateAttrAt("event",true,"e164","5034")
    xml.UpdateAttrAt("event[1]",true,"msg","alert-from")
    xml.UpdateAttrAt("event[1]",true,"time","287069")
    xml.UpdateAttrAt("event[1]",true,"e164","5034")
    xml.UpdateAttrAt("event[2]",true,"msg","rel-to")
    xml.UpdateAttrAt("event[2]",true,"time","287079")
    xml.UpdateAttrAt("event[2]",true,"e164","5034")

    // Show that we have the above XML
    fmt.Println(*xml.GetXml())

    // Find the element where msg = "alert-from"
    // This updates the xml object's reference to the found element (if successful).
    notUsed := xml.ChilkatPath("/A/event,msg,alert-from|$")
    if xml.LastMethodSuccess() == false {
        fmt.Println("Not found.")
        xml.DisposeXml()
        return
    }

    // Get the value of the "time" attribute.
    fmt.Println("time = ", *xml.GetAttrValue("time"))

    // Restore the xml object's internal reference to the root of the XML document
    xml.GetRoot2()

    xml.DisposeXml()