#[macro_use] extern crate html5ever;
use std::io;
use std::iter::repeat;
use std::default::Default;
use std::string::String;
use html5ever::parse_document;
use html5ever::rcdom::{NodeData, RcDom, Handle};
use html5ever::tendril::TendrilSink;
fn walk(indent: usize, handle: Handle) {
let node = handle;
print!("{}", repeat(" ").take(indent).collect::<String>());
match node.data {
NodeData::Document
=> println!("#Document"),
NodeData::Doctype { ref name, ref public_id, ref system_id }
=> println!("<!DOCTYPE {} \"{}\" \"{}\">", name, public_id, system_id),
NodeData::Text { ref contents }
=> println!("#text: {}", escape_default(&contents.borrow())),
NodeData::Comment { ref contents }
=> println!("<!-- {} -->", escape_default(contents)),
NodeData::Element { ref name, ref attrs, .. } => {
assert!(name.ns == ns!(html));
print!("<{}", name.local);
for attr in attrs.borrow().iter() {
assert!(attr.name.ns == ns!());
print!(" {}=\"{}\"", attr.name.local, attr.value);
}
println!(">");
}
NodeData::ProcessingInstruction { .. } => unreachable!()
}
for child in node.children.borrow().iter() {
walk(indent+4, child.clone());
}
}
pub fn escape_default(s: &str) -> String {
s.chars().flat_map(|c| c.escape_default()).collect()
}
fn main() {
let stdin = io::stdin();
let dom = parse_document(RcDom::default(), Default::default())
.from_utf8()
.read_from(&mut stdin.lock())
.unwrap();
walk(0, dom.document);
if !dom.errors.is_empty() {
println!("\nParse errors:");
for err in dom.errors.into_iter() {
println!(" {}", err);
}
}
}