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//! HTML documents.
use crate::document::Document;
use html5ever::{parse_document, tendril::TendrilSink};
use markup5ever_rcdom::RcDom;
use std::io;
/// Parses an HTML document.
pub fn parse(source: &str) -> Result<Document, io::Error> {
parse_bytes(source.as_bytes())
}
/// Parses an HTML document from bytes.
pub fn parse_bytes(mut source: &[u8]) -> Result<Document, io::Error> {
parse_document(RcDom::default(), Default::default())
.from_utf8()
.read_from(&mut source)
.map(|dom| Document::from_markup5ever(&dom.document))
}
#[cfg(test)]
mod tests {
use super::*;
use crate::document::{Element, Node};
use alloc::sync::Arc;
use pretty_assertions::assert_eq;
const XHTML_NAMESPACE: &str = "http://www.w3.org/1999/xhtml";
const SVG_NAMESPACE: &str = "http://www.w3.org/2000/svg";
fn element(
namespace: &str,
name: &str,
attributes: Vec<(&str, &str)>,
children: Vec<Arc<Node>>,
) -> Arc<Node> {
Arc::new(Node::Element(
Element::new(
name.into(),
attributes
.into_iter()
.map(|(name, value)| (name.into(), value.into()))
.collect(),
children,
)
.set_namespace(Some(namespace.into())),
))
}
fn text(value: &str) -> Arc<Node> {
Arc::new(Node::Text(value.into()))
}
#[test]
fn parse_empty_string() {
assert_eq!(
parse("").unwrap(),
Document::new(vec![element(
XHTML_NAMESPACE,
"html",
vec![],
vec![
element(XHTML_NAMESPACE, "head", vec![], vec![]),
element(XHTML_NAMESPACE, "body", vec![], vec![]),
],
)])
);
}
#[test]
fn parse_simple_html() {
assert_eq!(
parse("<html><body><p>Hello</p></body></html>").unwrap(),
Document::new(vec![element(
XHTML_NAMESPACE,
"html",
vec![],
vec![
element(XHTML_NAMESPACE, "head", vec![], vec![]),
element(
XHTML_NAMESPACE,
"body",
vec![],
vec![element(XHTML_NAMESPACE, "p", vec![], vec![text("Hello")])],
),
],
)])
);
}
#[test]
fn parse_with_attributes() {
assert_eq!(
parse("<html><body><p class=\"foo\">Hello</p></body></html>").unwrap(),
Document::new(vec![element(
XHTML_NAMESPACE,
"html",
vec![],
vec![
element(XHTML_NAMESPACE, "head", vec![], vec![]),
element(
XHTML_NAMESPACE,
"body",
vec![],
vec![element(
XHTML_NAMESPACE,
"p",
vec![("class", "foo")],
vec![text("Hello")],
)],
),
],
)])
);
}
#[test]
fn parse_svg_document() {
assert_eq!(
parse(concat!(
r#"<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">"#,
r#"<a href="/foo"><rect/></a>"#,
r#"<image xlink:href="/bar.png"/>"#,
"</svg>"
))
.unwrap(),
Document::new(vec![element(
XHTML_NAMESPACE,
"html",
vec![],
vec![
element(XHTML_NAMESPACE, "head", vec![], vec![]),
element(
XHTML_NAMESPACE,
"body",
vec![],
vec![element(
SVG_NAMESPACE,
"svg",
vec![],
vec![
element(
SVG_NAMESPACE,
"a",
vec![("href", "/foo")],
vec![element(SVG_NAMESPACE, "rect", vec![], vec![])],
),
element(
SVG_NAMESPACE,
"image",
vec![("xlink:href", "/bar.png")],
vec![],
),
],
)],
),
],
)])
);
}
#[test]
fn ignore_comments() {
assert_eq!(
parse("<html><body><!-- comment --><p>Hello</p></body></html>").unwrap(),
Document::new(vec![element(
XHTML_NAMESPACE,
"html",
vec![],
vec![
element(XHTML_NAMESPACE, "head", vec![], vec![]),
element(
XHTML_NAMESPACE,
"body",
vec![],
vec![element(XHTML_NAMESPACE, "p", vec![], vec![text("Hello")])],
),
],
)])
);
}
}