(MFC) Compress XML Tree

Demonstrates how to compress and restore the entire subtree rooted at an XML node.

The input XML, available at http://www.chilkatsoft.com/data/compress2.xml, is this:

<root>
    <lazydog>
        <fox>The quick brown fox jumps over the lazy dog</fox>
    </lazydog>
    <fox>The quick brown fox jumps over the lazy dog</fox>
    <child>
        <grandchild>The quick brown fox jumps over the lazy dog</grandchild>
    </child>
    <child>
        <grandchild>The quick brown fox jumps over the lazy dog</grandchild>
    </child>
</root>

Downloads:

MS Windows Visual C/C++ Libraries

Linux/CentOS C/C++ Libraries

MAC OS X C/C++ Libraries

Solaris C/C++ Libraries

C++ Builder Libraries

FreeBSD C++ Libraries

HP-UX C++ Libraries

BlackBerry QNX C++ Libraries

// Needs #include <CkXml.h>

    CkString strOut;

    CkXml xml;

    bool success;
    //  The sample input XML is available at http://www.chilkatsoft.com/data/compress2.xml
    success = xml.LoadXmlFile("compress2.xml");
    if (success != true) {
        strOut.append(xml.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Zip compress the root node's entire subtree:
    xml.ZipTree();

    //  Examine the new XML document:
    strOut.append(xml.GetXml());
    strOut.append("\r\n");

    //  This is the XML w/ the compressed subtree in Base64 encoded format:
    //  
<root><![CDATA[4+WyKcrPL7Hj5VIAApucxKrKlPx0KBcslJZfYReSkapQWJqZnK2QVJRfnqcAFFPIKs0tKFbIL0st
UigBSoN0KgC12uiDNECN00c1jyKzkjMyc1KQHZZelJiXAhElyUwkfTBnovDoYZGNPjTUAQ==
]]></root>


    //  Now uncompress and show that the original subtree was restored:
    xml.UnzipTree();
    strOut.append(xml.GetXml());
    strOut.append("\r\n");



    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());