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use std::borrow::Cow;
use html5ever::{self, Attribute, QualName, ExpandedName};
use html5ever::tendril::StrTendril;
use html5ever::tree_builder::{TreeSink, NodeOrText, QuirksMode, ElementFlags};
use tree::NodeRef;
#[derive(Default)]
pub struct ParseOpts {
pub tokenizer: html5ever::tokenizer::TokenizerOpts,
pub tree_builder: html5ever::tree_builder::TreeBuilderOpts,
pub on_parse_error: Option<Box<FnMut(Cow<'static, str>)>>,
}
pub fn parse_html() -> html5ever::Parser<Sink> {
parse_html_with_options(ParseOpts::default())
}
pub fn parse_html_with_options(opts: ParseOpts) -> html5ever::Parser<Sink> {
let sink = Sink {
document_node: NodeRef::new_document(),
on_parse_error: opts.on_parse_error,
};
let html5opts = html5ever::ParseOpts {
tokenizer: opts.tokenizer,
tree_builder: opts.tree_builder,
};
html5ever::parse_document(sink, html5opts)
}
pub struct Sink {
document_node: NodeRef,
on_parse_error: Option<Box<FnMut(Cow<'static, str>)>>,
}
impl TreeSink for Sink {
type Output = NodeRef;
fn finish(self) -> NodeRef { self.document_node }
type Handle = NodeRef;
#[inline]
fn parse_error(&mut self, message: Cow<'static, str>) {
if let Some(ref mut handler) = self.on_parse_error {
handler(message)
}
}
#[inline]
fn get_document(&mut self) -> NodeRef {
self.document_node.clone()
}
#[inline]
fn set_quirks_mode(&mut self, mode: QuirksMode) {
self.document_node.as_document().unwrap()._quirks_mode.set(mode)
}
#[inline]
fn same_node(&self, x: &NodeRef, y: &NodeRef) -> bool {
x == y
}
#[inline]
fn elem_name<'a>(&self, target: &'a NodeRef) -> ExpandedName<'a> {
target.as_element().unwrap().name.expanded()
}
#[inline]
fn create_element(&mut self, name: QualName, attrs: Vec<Attribute>, _flags: ElementFlags)
-> NodeRef {
let attrs = attrs.into_iter().map(|Attribute { name, value }| (name, value.into()));
NodeRef::new_element(name, attrs)
}
#[inline]
fn create_comment(&mut self, text: StrTendril) -> NodeRef {
NodeRef::new_comment(text)
}
#[inline]
fn create_pi(&mut self, target: StrTendril, data: StrTendril) -> NodeRef {
NodeRef::new_processing_instruction(target, data)
}
#[inline]
fn has_parent_node(&self, node: &NodeRef) -> bool {
node.parent().is_some()
}
#[inline]
fn append(&mut self, parent: &NodeRef, child: NodeOrText<NodeRef>) {
match child {
NodeOrText::AppendNode(node) => parent.append(node),
NodeOrText::AppendText(text) => {
if let Some(last_child) = parent.last_child() {
if let Some(existing) = last_child.as_text() {
existing.borrow_mut().push_str(&text);
return
}
}
parent.append(NodeRef::new_text(text))
}
}
}
#[inline]
fn append_before_sibling(&mut self, sibling: &NodeRef, child: NodeOrText<NodeRef>) {
match child {
NodeOrText::AppendNode(node) => sibling.insert_before(node),
NodeOrText::AppendText(text) => {
if let Some(previous_sibling) = sibling.previous_sibling() {
if let Some(existing) = previous_sibling.as_text() {
existing.borrow_mut().push_str(&text);
return
}
}
sibling.insert_before(NodeRef::new_text(text))
}
}
}
#[inline]
fn append_doctype_to_document(&mut self, name: StrTendril, public_id: StrTendril,
system_id: StrTendril) {
self.document_node.append(NodeRef::new_doctype(name, public_id, system_id))
}
#[inline]
fn add_attrs_if_missing(&mut self, target: &NodeRef, attrs: Vec<Attribute>) {
let element = target.as_element().unwrap();
let mut attributes = element.attributes.borrow_mut();
for Attribute { name, value } in attrs {
attributes.map.entry(name).or_insert_with(|| value.into());
}
}
#[inline]
fn remove_from_parent(&mut self, target: &NodeRef) {
target.detach()
}
#[inline]
fn reparent_children(&mut self, node: &NodeRef, new_parent: &NodeRef) {
for child in node.children() {
new_parent.append(child)
}
}
#[inline]
fn mark_script_already_started(&mut self, _node: &NodeRef) {
}
#[inline]
fn get_template_contents(&mut self, target: &NodeRef) -> NodeRef {
target.as_element().unwrap().template_contents.clone().unwrap()
}
}