Rust

Find Direct Child with Specific Tag

See more XML Examples

Demonstrates how to find a direct child having a specific tag.

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

<root>
    <fruit color="red">apple</fruit>
    <fruit color="green">pear</fruit>
    <veg color="orange">carrot</veg>
    <meat animal="cow">beef</meat>
    <xyz>
        <fruit color="blue">blueberry</fruit>
        <veg color="green">broccoli</veg>
    </xyz>
    <fruit color="purple">grape</fruit>
    <cheese color="yellow">cheddar</cheese>
</root>

Rust

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

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

// Find the direct child node having the tag "meat", and 
// return a new instance of the XML object referencing the
// child node, if found.
let child = xml.find_child("meat").unwrap();
if !xml.last_method_success() {
    println!("No direct child having the tag \"meat\" was found.");
} else {
    println!("Content = {}", child.content());

}

// The same can be accomplished without creating a new 
// XML object instance.  Instead, the FindChild2 method updates
// the caller's internal reference to the found child, if successful.
if xml.find_child2("meat").is_ok() {
    // Success!  The xml object now references the found child.
    println!("Content = {}", xml.content());
    // Restore the reference back to the parent.
    let _ = xml.get_parent2().is_ok();
} else {
    println!("No direct child having the tag \"meat\" was found.");
}