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jingle_ibb: Switch to Into/TryFrom.

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This commit is contained in:
Emmanuel Gil Peyrot 2017-05-06 14:03:41 +01:00
parent bb12168c41
commit 8fbda37f6b
1 changed files with 37 additions and 33 deletions
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70
src/jingle_ibb.rs
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@ -4,6 +4,7 @@
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
use std::convert::TryFrom;
use std::str::FromStr;
use minidom::Element;
@ -30,55 +31,58 @@ fn required_attr<T: FromStr>(root: &Element, attr: &str, err: Error) -> Result<T
optional_attr(root, attr).ok_or(err)
}
pub fn parse_jingle_ibb(root: &Element) -> Result<Transport, Error> {
if root.is("transport", ns::JINGLE_IBB) {
for _ in root.children() {
return Err(Error::ParseError("Unknown child in JingleIBB element."));
impl<'a> TryFrom<&'a Element> for Transport {
type Error = Error;
fn try_from(elem: &'a Element) -> Result<Transport, Error> {
if elem.is("transport", ns::JINGLE_IBB) {
for _ in elem.children() {
return Err(Error::ParseError("Unknown child in JingleIBB element."));
}
let block_size = required_attr(elem, "block-size", Error::ParseError("Required attribute 'block-size' missing in JingleIBB element."))?;
let sid = required_attr(elem, "sid", Error::ParseError("Required attribute 'sid' missing in JingleIBB element."))?;
let stanza = elem.attr("stanza")
.unwrap_or("iq")
.parse()?;
Ok(Transport {
block_size: block_size,
sid: sid,
stanza: stanza
})
} else {
Err(Error::ParseError("This is not an JingleIBB element."))
}
let block_size = required_attr(root, "block-size", Error::ParseError("Required attribute 'block-size' missing in JingleIBB element."))?;
let sid = required_attr(root, "sid", Error::ParseError("Required attribute 'sid' missing in JingleIBB element."))?;
let stanza = root.attr("stanza")
.unwrap_or("iq")
.parse()?;
Ok(Transport {
block_size: block_size,
sid: sid,
stanza: stanza
})
} else {
Err(Error::ParseError("This is not an JingleIBB element."))
}
}
pub fn serialise(transport: &Transport) -> Element {
Element::builder("transport")
.ns(ns::JINGLE_IBB)
.attr("block-size", format!("{}", transport.block_size))
.attr("sid", transport.sid.clone())
.attr("stanza", transport.stanza.clone())
.build()
impl<'a> Into<Element> for &'a Transport {
fn into(self) -> Element {
Element::builder("transport")
.ns(ns::JINGLE_IBB)
.attr("block-size", format!("{}", self.block_size))
.attr("sid", self.sid.clone())
.attr("stanza", self.stanza.clone())
.build()
}
}
#[cfg(test)]
mod tests {
use minidom::Element;
use error::Error;
use ibb;
use jingle_ibb;
use super::*;
#[test]
fn test_simple() {
let elem: Element = "<transport xmlns='urn:xmpp:jingle:transports:ibb:1' block-size='3' sid='coucou'/>".parse().unwrap();
let transport = jingle_ibb::parse_jingle_ibb(&elem).unwrap();
let transport = Transport::try_from(&elem).unwrap();
assert_eq!(transport.block_size, 3);
assert_eq!(transport.sid, "coucou");
assert_eq!(transport.stanza, ibb::Stanza::Iq);
assert_eq!(transport.stanza, Stanza::Iq);
}
#[test]
fn test_invalid() {
let elem: Element = "<transport xmlns='urn:xmpp:jingle:transports:ibb:1'/>".parse().unwrap();
let error = jingle_ibb::parse_jingle_ibb(&elem).unwrap_err();
let error = Transport::try_from(&elem).unwrap_err();
let message = match error {
Error::ParseError(string) => string,
_ => panic!(),
@ -87,7 +91,7 @@ mod tests {
// TODO: maybe make a better error message here.
let elem: Element = "<transport xmlns='urn:xmpp:jingle:transports:ibb:1' block-size='-5'/>".parse().unwrap();
let error = jingle_ibb::parse_jingle_ibb(&elem).unwrap_err();
let error = Transport::try_from(&elem).unwrap_err();
let message = match error {
Error::ParseError(string) => string,
_ => panic!(),
@ -95,7 +99,7 @@ mod tests {
assert_eq!(message, "Required attribute 'block-size' missing in JingleIBB element.");
let elem: Element = "<transport xmlns='urn:xmpp:jingle:transports:ibb:1' block-size='128'/>".parse().unwrap();
let error = jingle_ibb::parse_jingle_ibb(&elem).unwrap_err();
let error = Transport::try_from(&elem).unwrap_err();
let message = match error {
Error::ParseError(string) => string,
_ => panic!(),
@ -106,7 +110,7 @@ mod tests {
#[test]
fn test_invalid_stanza() {
let elem: Element = "<transport xmlns='urn:xmpp:jingle:transports:ibb:1' block-size='128' sid='coucou' stanza='fdsq'/>".parse().unwrap();
let error = jingle_ibb::parse_jingle_ibb(&elem).unwrap_err();
let error = Transport::try_from(&elem).unwrap_err();
let message = match error {
Error::ParseError(string) => string,
_ => panic!(),