84 lines
2.4 KiB
Rust
84 lines
2.4 KiB
Rust
use html5ever::{LocalName, Namespace, Prefix};
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use indexmap::{map::Entry, IndexMap};
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/// Convenience wrapper around a indexmap that adds method for attributes in the null namespace.
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#[derive(Debug, PartialEq, Clone)]
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pub struct Attributes {
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/// A map of attributes whose name can have namespaces.
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pub map: IndexMap<ExpandedName, Attribute>,
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}
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/// <https://www.w3.org/TR/REC-xml-names/#dt-expname>
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#[derive(Debug, PartialEq, Eq, Hash, Clone, PartialOrd, Ord)]
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pub struct ExpandedName {
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/// Namespace URL
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pub ns: Namespace,
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/// "Local" part of the name
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pub local: LocalName,
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}
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impl ExpandedName {
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/// Trivial constructor
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pub fn new<N: Into<Namespace>, L: Into<LocalName>>(ns: N, local: L) -> Self {
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ExpandedName {
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ns: ns.into(),
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local: local.into(),
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}
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}
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}
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/// The non-identifying parts of an attribute
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#[derive(Debug, PartialEq, Clone)]
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pub struct Attribute {
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/// The namespace prefix, if any
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pub prefix: Option<Prefix>,
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/// The attribute value
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pub value: String,
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}
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impl Attributes {
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/// Like IndexMap::contains
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pub fn contains<A: Into<LocalName>>(&self, local_name: A) -> bool {
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self.map.contains_key(&ExpandedName::new(ns!(), local_name))
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}
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/// Like IndexMap::get
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pub fn get<A: Into<LocalName>>(&self, local_name: A) -> Option<&str> {
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self.map
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.get(&ExpandedName::new(ns!(), local_name))
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.map(|attr| &*attr.value)
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}
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/// Like IndexMap::get_mut
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pub fn get_mut<A: Into<LocalName>>(&mut self, local_name: A) -> Option<&mut String> {
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self.map
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.get_mut(&ExpandedName::new(ns!(), local_name))
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.map(|attr| &mut attr.value)
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}
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/// Like IndexMap::entry
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pub fn entry<A: Into<LocalName>>(&mut self, local_name: A) -> Entry<ExpandedName, Attribute> {
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self.map.entry(ExpandedName::new(ns!(), local_name))
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}
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/// Like IndexMap::insert
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pub fn insert<A: Into<LocalName>>(
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&mut self,
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local_name: A,
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value: String,
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) -> Option<Attribute> {
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self.map.insert(
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ExpandedName::new(ns!(), local_name),
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Attribute {
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prefix: None,
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value,
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},
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)
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}
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/// Like IndexMap::remove
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pub fn remove<A: Into<LocalName>>(&mut self, local_name: A) -> Option<Attribute> {
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self.map.remove(&ExpandedName::new(ns!(), local_name))
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}
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}
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