C++

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. C++

#include <CkXml.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  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>

    //  First, build the above XML:

    CkXml xml;
    xml.put_Tag("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
    std::cout << xml.getXml() << "\r\n";

    //  Find the element where msg = "alert-from"
    //  This updates the xml object's reference to the found element (if successful).
    const char *notUsed = xml.chilkatPath("/A/event,msg,alert-from|$");
    if (xml.get_LastMethodSuccess() == false) {
        std::cout << "Not found." << "\r\n";
        return;
    }

    //  Get the value of the "time" attribute.
    std::cout << "time = " << xml.getAttrValue("time") << "\r\n";

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