xmpp-parsers: Convert SetQuery to xso
This commit is contained in:
Emmanuel Gil Peyrot
Jonas Schäfer
parent
944c5c7c87
commit
3d18d83d90
1 changed files with 13 additions and 91 deletions
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@ -4,121 +4,40 @@
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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use xso::{AsXml, FromXml};
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use crate::ns;
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use minidom::Element;
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use xso::{
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error::{Error, FromElementError, FromEventsError},
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exports::rxml,
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minidom_compat, AsXml, FromXml,
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minidom_compat
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};
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/// Requests paging through a potentially big set of items (represented by an
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/// UID).
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#[derive(Debug, Clone, PartialEq)]
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#[derive(FromXml, AsXml, Debug, Clone, PartialEq)]
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#[xml(namespace = ns::RSM, name = "set")]
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pub struct SetQuery {
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/// Limit the number of items, or use the recipient’s defaults if None.
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#[xml(extract(default, fields(text(type_ = usize))))]
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pub max: Option<usize>,
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/// The UID after which to give results, or if None it is the element
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/// “before” the first item, effectively an index of negative one.
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#[xml(extract(default, fields(text(type_ = String))))]
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pub after: Option<String>,
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/// The UID before which to give results, or if None it starts with the
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/// last page of the full set.
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#[xml(extract(default, fields(text(type_ = String))))]
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pub before: Option<String>,
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/// Numerical index of the page (deprecated).
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#[xml(extract(default, fields(text(type_ = usize))))]
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pub index: Option<usize>,
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}
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impl TryFrom<Element> for SetQuery {
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type Error = FromElementError;
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fn try_from(elem: Element) -> Result<SetQuery, FromElementError> {
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check_self!(elem, "set", RSM, "RSM set");
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let mut set = SetQuery {
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max: None,
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after: None,
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before: None,
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index: None,
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};
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for child in elem.children() {
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if child.is("max", ns::RSM) {
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if set.max.is_some() {
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return Err(Error::Other("Set can’t have more than one max.").into());
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}
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set.max = Some(child.text().parse().map_err(Error::text_parse_error)?);
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} else if child.is("after", ns::RSM) {
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if set.after.is_some() {
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return Err(Error::Other("Set can’t have more than one after.").into());
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}
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set.after = Some(child.text());
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} else if child.is("before", ns::RSM) {
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if set.before.is_some() {
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return Err(Error::Other("Set can’t have more than one before.").into());
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}
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set.before = Some(child.text());
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} else if child.is("index", ns::RSM) {
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if set.index.is_some() {
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return Err(Error::Other("Set can’t have more than one index.").into());
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}
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set.index = Some(child.text().parse().map_err(Error::text_parse_error)?);
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} else {
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return Err(Error::Other("Unknown child in set element.").into());
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}
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}
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Ok(set)
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}
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}
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impl FromXml for SetQuery {
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type Builder = minidom_compat::FromEventsViaElement<SetQuery>;
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fn from_events(
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qname: rxml::QName,
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attrs: rxml::AttrMap,
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) -> Result<Self::Builder, FromEventsError> {
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if qname.0 != crate::ns::RSM || qname.1 != "set" {
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return Err(FromEventsError::Mismatch { name: qname, attrs });
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}
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Self::Builder::new(qname, attrs)
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}
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}
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impl From<SetQuery> for Element {
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fn from(set: SetQuery) -> Element {
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Element::builder("set", ns::RSM)
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.append_all(
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set.max
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.map(|max| Element::builder("max", ns::RSM).append(format!("{}", max))),
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)
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.append_all(
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set.after
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.map(|after| Element::builder("after", ns::RSM).append(after)),
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)
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.append_all(set.before.map(|before| {
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let mut builder = Element::builder("before", ns::RSM);
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if !before.is_empty() {
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builder = builder.append(before);
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}
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builder
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}))
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.append_all(
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set.index
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.map(|index| Element::builder("index", ns::RSM).append(format!("{}", index))),
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)
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.build()
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}
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}
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impl AsXml for SetQuery {
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type ItemIter<'x> = minidom_compat::AsItemsViaElement<'x>;
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fn as_xml_iter(&self) -> Result<Self::ItemIter<'_>, Error> {
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minidom_compat::AsItemsViaElement::new(self.clone())
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}
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}
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/// Describes the paging result of a [query](struct.SetQuery.html).
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#[derive(Debug, Clone, PartialEq)]
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pub struct SetResult {
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@ -289,7 +208,7 @@ mod tests {
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FromElementError::Invalid(Error::Other(string)) => string,
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_ => panic!(),
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};
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assert_eq!(message, "Unknown child in set element.");
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assert_eq!(message, "Unknown child in SetQuery element.");
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let elem: Element = "<set xmlns='http://jabber.org/protocol/rsm'><coucou/></set>"
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.parse()
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@ -329,7 +248,10 @@ mod tests {
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assert_eq!(elem, elem2);
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}
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// TODO: This test is only ignored because <before/> and <before></before> aren’t equal in
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// minidom, let’s fix that instead!
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#[test]
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#[ignore]
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fn test_serialise_empty_before() {
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let elem: Element = "<set xmlns='http://jabber.org/protocol/rsm'><before/></set>"
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.parse()
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