C

Compress XML Tree

See more XML Examples

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>

C

#include <C_CkXml.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkXml xml;

    success = FALSE;

    xml = CkXml_Create();

    // The sample input XML is available at http://www.chilkatsoft.com/data/compress2.xml
    success = CkXml_LoadXmlFile(xml,"compress2.xml");
    if (success != TRUE) {
        printf("%s\n",CkXml_lastErrorText(xml));
        CkXml_Dispose(xml);
        return;
    }

    // Zip compress the root node's entire subtree:
    success = CkXml_ZipTree(xml);

    // Examine the new XML document:
    printf("%s\n",CkXml_getXml(xml));

    // 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:
    success = CkXml_UnzipTree(xml);
    printf("%s\n",CkXml_getXml(xml));


    CkXml_Dispose(xml);

    }