Rust

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>

Rust

let xml = chilkat::Xml::new();

// The sample input XML is available at http://www.chilkatsoft.com/data/compress2.xml
if xml.load_xml_file("compress2.xml").is_err() {
    println!("{}", xml.last_error_text());
    return;
}

// Zip compress the root node's entire subtree:
let _ = xml.zip_tree().is_ok();

// Examine the new XML document:
println!("{}", xml.get_xml().unwrap_or_default());

// 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:
let _ = xml.unzip_tree().is_ok();
println!("{}", xml.get_xml().unwrap_or_default());