7b66de1166
Let’s continue reexporting jid and minidom, but not their inner pub items, users of this crate can go one level deeper if they need that. Only xso::error::Error is still useful to reexport, as this is part of the public API of all of our parsers.
119 lines
4.1 KiB
Rust
119 lines
4.1 KiB
Rust
// Copyright (c) 2019 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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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::date::DateTime;
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use crate::iq::{IqGetPayload, IqResultPayload};
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use crate::ns;
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use chrono::FixedOffset;
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use minidom::Element;
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use std::str::FromStr;
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use xso::error::{Error, FromElementError};
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/// An entity time query.
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#[derive(FromXml, AsXml, PartialEq, Debug, Clone)]
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#[xml(namespace = ns::TIME, name = "time")]
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pub struct TimeQuery;
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impl IqGetPayload for TimeQuery {}
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/// An entity time result, containing an unique DateTime.
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#[derive(Debug, Clone)]
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pub struct TimeResult(pub DateTime);
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impl IqResultPayload for TimeResult {}
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impl TryFrom<Element> for TimeResult {
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type Error = FromElementError;
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fn try_from(elem: Element) -> Result<TimeResult, FromElementError> {
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check_self!(elem, "time", TIME);
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check_no_attributes!(elem, "time");
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let mut tzo = None;
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let mut utc = None;
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for child in elem.children() {
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if child.is("tzo", ns::TIME) {
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if tzo.is_some() {
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return Err(Error::Other("More than one tzo element in time.").into());
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}
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check_no_children!(child, "tzo");
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check_no_attributes!(child, "tzo");
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// TODO: Add a FromStr implementation to FixedOffset to avoid this hack.
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let fake_date = format!("{}{}", "2019-04-22T11:38:00", child.text());
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let date_time = DateTime::from_str(&fake_date).map_err(Error::text_parse_error)?;
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tzo = Some(date_time.timezone());
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} else if child.is("utc", ns::TIME) {
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if utc.is_some() {
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return Err(Error::Other("More than one utc element in time.").into());
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}
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check_no_children!(child, "utc");
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check_no_attributes!(child, "utc");
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let date_time =
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DateTime::from_str(&child.text()).map_err(Error::text_parse_error)?;
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match FixedOffset::east_opt(0) {
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Some(tz) if date_time.timezone() == tz => (),
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_ => return Err(Error::Other("Non-UTC timezone for utc element.").into()),
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}
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utc = Some(date_time);
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} else {
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return Err(Error::Other("Unknown child in time element.").into());
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}
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}
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let tzo = tzo.ok_or(Error::Other("Missing tzo child in time element."))?;
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let utc = utc.ok_or(Error::Other("Missing utc child in time element."))?;
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let date = utc.with_timezone(tzo);
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Ok(TimeResult(date))
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}
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}
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impl From<TimeResult> for Element {
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fn from(time: TimeResult) -> Element {
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Element::builder("time", ns::TIME)
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.append(Element::builder("tzo", ns::TIME).append(format!("{}", time.0.timezone())))
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.append(
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Element::builder("utc", ns::TIME).append(
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time.0
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.with_timezone(FixedOffset::east_opt(0).unwrap())
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.format("%FT%TZ"),
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),
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)
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.build()
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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// DateTime’s size doesn’t depend on the architecture.
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#[test]
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fn test_size() {
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assert_size!(TimeQuery, 0);
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assert_size!(TimeResult, 16);
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}
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#[test]
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fn parse_response() {
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let elem: Element =
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"<time xmlns='urn:xmpp:time'><tzo>-06:00</tzo><utc>2006-12-19T17:58:35Z</utc></time>"
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.parse()
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.unwrap();
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let elem1 = elem.clone();
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let time = TimeResult::try_from(elem).unwrap();
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assert_eq!(time.0.timezone(), FixedOffset::west_opt(6 * 3600).unwrap());
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assert_eq!(
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time.0,
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DateTime::from_str("2006-12-19T12:58:35-05:00").unwrap()
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);
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let elem2 = Element::from(time);
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assert_eq!(elem1, elem2);
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}
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}
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