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// Copyright 2014-2017 The html5ever Project Developers. See the
// COPYRIGHT file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#[macro_use]
extern crate html5ever;
use std::borrow::Cow;
use std::collections::HashMap;
use std::default::Default;
use std::io;
use html5ever::parse_document;
use html5ever::tendril::*;
use html5ever::tree_builder::{
AppendNode, AppendText, ElementFlags, NodeOrText, QuirksMode, TreeSink,
};
use html5ever::{Attribute, ExpandedName, QualName};
struct Sink {
next_id: usize,
names: HashMap<usize, QualName>,
}
impl Sink {
fn get_id(&mut self) -> usize {
let id = self.next_id;
self.next_id += 2;
id
}
}
impl TreeSink for Sink {
type Handle = usize;
type Output = Self;
fn finish(self) -> Self {
self
}
fn parse_error(&mut self, msg: Cow<'static, str>) {
println!("Parse error: {}", msg);
}
fn get_document(&mut self) -> usize {
0
}
fn get_template_contents(&mut self, target: &usize) -> usize {
if let Some(expanded_name!(html "template")) = self.names.get(target).map(|n| n.expanded())
{
target + 1
} else {
panic!("not a template element")
}
}
fn set_quirks_mode(&mut self, mode: QuirksMode) {
println!("Set quirks mode to {:?}", mode);
}
fn same_node(&self, x: &usize, y: &usize) -> bool {
x == y
}
fn elem_name(&self, target: &usize) -> ExpandedName {
self.names.get(target).expect("not an element").expanded()
}
fn create_element(&mut self, name: QualName, _: Vec<Attribute>, _: ElementFlags) -> usize {
let id = self.get_id();
println!("Created {:?} as {}", name, id);
self.names.insert(id, name);
id
}
fn create_comment(&mut self, text: StrTendril) -> usize {
let id = self.get_id();
println!("Created comment \"{}\" as {}", escape_default(&text), id);
id
}
#[allow(unused_variables)]
fn create_pi(&mut self, target: StrTendril, value: StrTendril) -> usize {
unimplemented!()
}
fn append(&mut self, parent: &usize, child: NodeOrText<usize>) {
match child {
AppendNode(n) => println!("Append node {} to {}", n, parent),
AppendText(t) => println!("Append text to {}: \"{}\"", parent, escape_default(&t)),
}
}
fn append_before_sibling(&mut self, sibling: &usize, new_node: NodeOrText<usize>) {
match new_node {
AppendNode(n) => println!("Append node {} before {}", n, sibling),
AppendText(t) => println!("Append text before {}: \"{}\"", sibling, escape_default(&t)),
}
}
fn append_based_on_parent_node(
&mut self,
element: &Self::Handle,
_prev_element: &Self::Handle,
child: NodeOrText<Self::Handle>,
) {
self.append_before_sibling(element, child);
}
fn append_doctype_to_document(
&mut self,
name: StrTendril,
public_id: StrTendril,
system_id: StrTendril,
) {
println!("Append doctype: {} {} {}", name, public_id, system_id);
}
fn add_attrs_if_missing(&mut self, target: &usize, attrs: Vec<Attribute>) {
assert!(self.names.contains_key(target), "not an element");
println!("Add missing attributes to {}:", target);
for attr in attrs.into_iter() {
println!(" {:?} = {}", attr.name, attr.value);
}
}
fn associate_with_form(
&mut self,
_target: &usize,
_form: &usize,
_nodes: (&usize, Option<&usize>),
) {
// No form owner support.
}
fn remove_from_parent(&mut self, target: &usize) {
println!("Remove {} from parent", target);
}
fn reparent_children(&mut self, node: &usize, new_parent: &usize) {
println!("Move children from {} to {}", node, new_parent);
}
fn mark_script_already_started(&mut self, node: &usize) {
println!("Mark script {} as already started", node);
}
fn set_current_line(&mut self, line_number: u64) {
println!("Set current line to {}", line_number);
}
fn pop(&mut self, elem: &usize) {
println!("Popped element {}", elem);
}
}
// FIXME: Copy of str::escape_default from std, which is currently unstable
pub fn escape_default(s: &str) -> String {
s.chars().flat_map(|c| c.escape_default()).collect()
}
fn main() {
let sink = Sink {
next_id: 1,
names: HashMap::new(),
};
let stdin = io::stdin();
parse_document(sink, Default::default())
.from_utf8()
.read_from(&mut stdin.lock())
.unwrap();
}
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