xmpp-rs/src/attribute.rs
Eijebong 0d0c4b76eb Fix the PartialEq implementation for Element
The order of attributes in an `Element` doesn't matter anymore.
`<elem a="b" c="d" />` and `<elem c="d" a="b" />` are now correctly
considered equal.

For that I had to derive `PartialOrd` and `Ord` for `Attribute`.
This allows us to sort cloned vectors of `Attribute` in the `PartialEq`
implementation and compare them instead of the struct `attributes`.

Fixes #3
2017-04-24 21:15:53 +02:00

45 lines
1.1 KiB
Rust

//! Provides an `Attribute` type which represents an attribute in an XML document.
use xml::escape::escape_str_attribute;
use std::fmt;
/// An attribute of a DOM element.
///
/// This is of the form: `name`="`value`"
///
/// This does not support prefixed/namespaced attributes yet.
#[derive(Clone, Debug, PartialEq, Eq, Ord, PartialOrd)]
pub struct Attribute {
/// The name of the attribute.
pub name: String,
/// The value of the attribute.
pub value: String,
}
impl fmt::Display for Attribute {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "{}=\"{}\"", self.name, escape_str_attribute(&self.value))
}
}
impl Attribute {
/// Construct a new attribute from the given `name` and `value`.
///
/// # Examples
///
/// ```
/// use minidom::Attribute;
///
/// let attr = Attribute::new("name", "value");
///
/// assert_eq!(attr.name, "name");
/// assert_eq!(attr.value, "value");
/// ```
pub fn new<N: Into<String>, V: Into<String>>(name: N, value: V) -> Attribute {
Attribute {
name: name.into(),
value: value.into(),
}
}
}