HTTP GET - Download and Parse HTML

Downloads an HTML page from the Singapore Exchange and parses a row of options prices from an HTML table.

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#include <CkHttp.h>
#include <CkHtmlToXml.h>
#include <CkXml.h>

void ChilkatSample(void)
    {
    CkHttp http;

    bool success;

    //  Any string unlocks the component for the 1st 30-days.
    success = http.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        printf("%s\n",http.lastErrorText());
        return;
    }

    //  Send the HTTP GET and return the content in a string.
    const char * html;
    html = http.quickGetStr("http://esite.sgx.com/live/dt/DTFuture.asp?JBFE");

    //  Use the Chilkat HTML-to-XML component to convert
    //  the HTML to parsable XML:
    CkHtmlToXml htmlToXml;

    //  Any string argument automatically begins the 30-day trial.

    success = htmlToXml.UnlockComponent("30-day trial");
    if (success != true) {
        printf("HtmlToXml component unlock failed\n");
        return;
    }

    //  Indicate the charset of the output XML we'll want.
    htmlToXml.put_XmlCharset("utf-8");

    //  Set the HTML:
    htmlToXml.put_Html(html);

    //  We won't need the scripts or images, so drop those tags...
    htmlToXml.DropTagType("img");
    htmlToXml.DropTagType("script");

    //  Get the XML:
    const char * xmlStr;
    xmlStr = htmlToXml.toXml();

    //  Load the XML into the Chilkat XML parser:
    CkXml xml;
    xml.LoadXml(xmlStr);

    //  success = xml.SaveXml("out.xml");

    CkXml *node = 0;

    //  Find a known point in the XML.  In this case we'll look for the text node
    //  containing this string: "Chg From Prev Settle"
    node = xml.SearchForContent(null,"text","Chg From Prev Settle");
    if (node == 0 ) {
        printf("Did not find Chg From Prev Settle\n");
        return;
    }

    //  Move up to the TD node:
    node->GetParent2();

    //  Move up to the TR node:
    node->GetParent2();

    //  Move to the next row (i.e. next TR)
    node->NextSibling2();

    node->FirstChild2();
    node->NextSibling2();

    printf("Expire Month/Year: %s\n",node->getChildContent("text"));
    node->NextSibling2();

    printf("Last: %s\n",node->getChildContent("text"));
    node->NextSibling2();

    printf("Change: %s\n",node->getChildContent("text"));
    node->NextSibling2();

    //  ...

    success = node->SaveXml("row.xml");

    delete node;

    }