Crate quick_xml

Quick XmlReader reader which performs very well.

Example

use quick_xml::{XmlReader, Event};
 
let xml = r#"<tag1 att1 = "test">
                <tag2><!--Test comment-->Test</tag2>
                <tag2>
                    Test 2
                </tag2>
            </tag1>"#;
let reader = XmlReader::from_str(xml).trim_text(true);
let mut count = 0;
let mut txt = Vec::new();
for r in reader {
    match r {
        Ok(Event::Start(ref e)) => {
            match e.name() {
                b"tag1" => println!("attributes values: {:?}", 
                                 e.attributes().map(|a| a.unwrap().1).collect::<Vec<_>>()),
                b"tag2" => count += 1,
                _ => (),
            }
        },
        Ok(Event::Text(e)) => txt.push(e.into_string()),
        Err(e) => panic!("{:?}", e),
        _ => (),
    }
}

Example of transforming XML

use quick_xml::{AsStr, Element, Event, XmlReader, XmlWriter};
use quick_xml::Event::*;
use std::io::Cursor;
use std::iter;
 
let xml = r#"<this_tag k1="v1" k2="v2"><child>text</child></this_tag>"#;
let reader = XmlReader::from_str(xml).trim_text(true);
let mut writer = XmlWriter::new(Cursor::new(Vec::new()));
for r in reader {
    match r {
        Ok(Event::Start(ref e)) if e.name() == b"this_tag" => {
            // collect existing attributes
            let mut attrs = e.attributes().map(|attr| attr.unwrap()).collect::<Vec<_>>();

            // copy existing attributes, adds a new my-key="some value" attribute
            let mut elem = Element::new("my_elem").with_attributes(attrs);
            elem.push_attribute(b"my-key", "some value");

            // writes the event to the writer
            assert!(writer.write(Start(elem)).is_ok());
        },
        Ok(Event::End(ref e)) if e.name() == b"this_tag" => {
            assert!(writer.write(End(Element::new("my_elem"))).is_ok());
        },
        Ok(e) => assert!(writer.write(e).is_ok()),
        Err(e) => panic!("{:?}", e),
    }
}

let result = writer.into_inner().into_inner();
let expected = r#"<my_elem k1="v1" k2="v2" my-key="some value"><child>text</child></my_elem>"#;
assert_eq!(result, expected.as_bytes());

Modules

attributes	Xml Attributes module
error	Error management module

Structs

Element	Wrapper around Vec representing the content of an event (aka node)
XmlReader	Xml reader
XmlWriter	Xml writer

Enums

Event

Event to interprete node as they are parsed

Traits

AsStr

A trait to support on-demand conversion from UTF-8