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RustyXML

Build Status

Documentation

RustyXML is a namespace aware XML parser written in Rust. Right now it provides a basic SAX-like API, and an ElementBuilder based on that.

The parser itself is derived from OFXMLParser as found in ObjFW https://webkeks.org/objfw/.

The current limitations are:

  • Incomplete error checking
  • Unstable API

The Minimal Supported Rust Version for this crate is Rust 1.40.0.

Examples

Parse a string into an Element struct:

use xml::Element;

let elem: Option<Element> = "<a href='//example.com'/>".parse();

Get events from parsing string data:

use xml::{Event, Parser};

// Create a new Parser
let mut p = Parser::new();

// Feed data to be parsed
p.feed_str("<a href");
p.feed_str("='//example.com'/>");

// Get events for the fed data
for event in p {
    match event.unwrap() {
        Event::ElementStart(tag) => println!("<{}>", tag.name),
        Event::ElementEnd(tag) => println!("</{}>", tag.name),
        _ => ()
    }
}

This should print:

<a>
</a>

Build Elements from Parser Events:

use xml::{Parser, ElementBuilder};

let mut p = xml::Parser::new();
let mut e = xml::ElementBuilder::new();

p.feed_str("<a href='//example.com'/>");
for elem in p.filter_map(|x| e.handle_event(x)) {
    match elem {
        Ok(e) => println!("{}", e),
        Err(e) => println!("{}", e),
    }
}

Build Elements by hand:

let mut reply = xml::Element::new("iq".into(), Some("jabber:client".into()),
                                  vec![("type".into(), None, "error".into()),
                                       ("id".into(), None, "42".into())]);
reply.tag(xml::Element::new("error".into(), Some("jabber:client".into()),
                            vec![("type".into(), None, "cancel".into())]))
     .tag_stay(xml::Element::new("forbidden".into(),
                                 Some("urn:ietf:params:xml:ns:xmpp-stanzas".into()),
                                 vec![]))
     .tag(xml::Element::new("text".into(),
                            Some("urn:ietf:params:xml:ns:xmpp-stanzas".into()),
                            vec![]))
     .text("Permission denied".into());

Result (some whitespace added for readability):

<iq xmlns='jabber:client' id='42' type='error'>
  <error type='cancel'>
    <forbidden xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'/>
    <text xmlns='urn:ietf:params:xml:ns:xmpp-stanzas'>Permission denied</text>
  </error>
</iq>

Attribute Order

By default the order of attributes is not tracked. Therefore during serialization and iteration their order will be random. This can be changed by enabling the ordered_attrs feature. With this feature enabled the order attributes were encountered while parsing, or added to an Element will be preserved.

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

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A XML parser written in Rust

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