forked from lavina/lavina
65 lines
2.6 KiB
Rust
65 lines
2.6 KiB
Rust
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use quick_xml::name::{ResolveResult, Namespace, LocalName, QName};
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use quick_xml::{Result, NsReader};
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use quick_xml::events::Event;
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use tokio::io::AsyncBufRead;
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pub static XMLNS: &'static str = "http://etherx.jabber.org/streams";
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#[derive(Debug, PartialEq, Eq)]
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pub struct ClientStreamStart {
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pub to: String,
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pub lang: String,
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pub version: String,
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}
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impl ClientStreamStart {
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pub async fn parse(reader: &mut NsReader<impl AsyncBufRead + Unpin>, buf: &mut Vec<u8>) -> Result<ClientStreamStart> {
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if let Event::Start(e) = reader.read_event_into_async(buf).await? {
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let (ns, local) = reader.resolve_element(e.name());
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if ns != ResolveResult::Bound(Namespace(XMLNS.as_bytes())) {
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return Err(panic!());
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}
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if local.into_inner() != b"stream" {
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return Err(panic!());
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}
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let mut to = None;
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let mut lang = None;
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let mut version = None;
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for attr in e.attributes() {
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let attr = attr?;
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let (ns, name) = reader.resolve_attribute(attr.key);
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match (ns, name.into_inner()) {
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(ResolveResult::Unbound, b"to") => {
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let value = attr.unescape_value()?;
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to = Some(value.to_string());
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},
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(ResolveResult::Bound(Namespace(b"http://www.w3.org/XML/1998/namespace")), b"lang") => {
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let value = attr.unescape_value()?;
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lang = Some(value.to_string());
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},
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(ResolveResult::Unbound, b"version") => {
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let value = attr.unescape_value()?;
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version = Some(value.to_string());
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},
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_ => {},
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}
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}
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Ok(ClientStreamStart { to: to.unwrap(), lang: lang.unwrap(), version: version.unwrap() })
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} else {
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Err(panic!())
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}
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}
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}
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#[cfg(test)]
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mod test {
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use super::*;
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#[tokio::test]
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async fn stream_start_correct() {
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let input = r###"<stream:stream xmlns:stream="http://etherx.jabber.org/streams" to="vlnv.dev" version="1.0" xmlns="jabber:client" xml:lang="en" xmlns:xml="http://www.w3.org/XML/1998/namespace">"###;
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let mut reader = NsReader::from_reader(input.as_bytes());
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let mut buf = vec![];
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let res = ClientStreamStart::parse(&mut reader, &mut buf).await.unwrap();
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assert_eq!(res, ClientStreamStart { to: "vlnv.dev".to_owned(), lang: "en".to_owned(), version: "1.0".to_owned()})
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}
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}
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