2fe3c0cef2
We can do this because we know that `x < y` cannot create a `TextCodec<T>` for any `T`. This is because `<` is guaranteed to return a boolean value, and we simply don't implement `TextCodec<T>` on bool.
77 lines
2.7 KiB
Rust
77 lines
2.7 KiB
Rust
// Copyright (c) 2024 xmpp-rs contributors.
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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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//! This module implements vCard avatar updates defined in
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//! [XEP-0153](https://xmpp.org/extensions/xep-0153.html).
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//!
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//! Specifically, as it appears in `<presence>` stanzas, as shown in [XEP-0153 example 3](https://xmpp.org/extensions/xep-0153.html#example-3).
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//!
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//! For [XEP-0054](https://xmpp.org/extensions/xep-0054.html) vCard support,
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//! see [`vcard`][crate::vcard] module.
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use xso::{text::FixedHex, AsXml, FromXml};
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use crate::ns;
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/// The presence payload for an avatar VCard update
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#[derive(FromXml, AsXml, Debug, PartialEq, Clone)]
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#[xml(namespace = ns::VCARD_UPDATE, name = "x")]
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pub struct VCardUpdate {
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/// The photo element. Is empty if "a client is not yet ready to advertise an image".
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#[xml(child(default))]
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pub photo: Option<Photo>,
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}
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/// The photo element containing the avatar metadata
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#[derive(FromXml, AsXml, PartialEq, Debug, Clone)]
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#[xml(namespace = ns::VCARD_UPDATE, name = "photo")]
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pub struct Photo {
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/// The SHA1 hash of the avatar. Empty when there is no photo.
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#[xml(text(codec = FixedHex<20>))]
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pub data: Option<[u8; 20]>,
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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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use minidom::Element;
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use std::str::FromStr;
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#[test]
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fn test_vcard_update() {
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// Test xml stolen from https://xmpp.org/extensions/xep-0153.html#example-3
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// Changes: I did set the last d to uppercase to try to trip up a potentially case-sensitive parser.
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let test_vcard = r"<x xmlns='vcard-temp:x:update'>
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<photo>01b87fcd030b72895ff8e88db57ec525450f000D</photo>
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</x>";
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let test_vcard = Element::from_str(&test_vcard).expect("Failed to parse XML");
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let test_vcard = VCardUpdate::try_from(test_vcard).expect("Failed to parse vCardUpdate");
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let photo = test_vcard.photo.expect("No photo found");
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assert_eq!(
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photo.data,
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Some([
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0x01, 0xb8, 0x7f, 0xcd, 0x03, 0x0b, 0x72, 0x89, 0x5f, 0xf8, 0xe8, 0x8d, 0xb5, 0x7e,
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0xc5, 0x25, 0x45, 0x0f, 0x00, 0x0d
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])
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);
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}
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#[test]
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fn test_vcard_update_empty() {
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// Test xml stolen from https://xmpp.org/extensions/xep-0153.html#example-7
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let test_vcard = r"<x xmlns='vcard-temp:x:update'><photo/></x>";
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let test_vcard = Element::from_str(&test_vcard).expect("Failed to parse XML");
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let test_vcard = VCardUpdate::try_from(test_vcard).expect("Failed to parse vCardUpdate");
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let photo = test_vcard.photo.expect("No photo found");
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assert_eq!(photo.data, None)
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}
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}
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