下面是一些解析文档的代码,为链接添加一个achor并打印新文档:
extern crate html5ever;
use html5ever::{ParseOpts, parse_document};
use html5ever::tree_builder::TreeBuilderOpts;
use html5ever::rcdom::RcDom;
use html5ever::rcdom::NodeEnum::Element;
use html5ever::serialize::{SerializeOpts, serialize};
use html5ever::tendril::TendrilSink;
fn main() {
let opts = ParseOpts {
tree_builder: TreeBuilderOpts {
drop_doctype: true,
..Default::default()
},
..Default::default()
};
let data = "<!DOCTYPE html><html><body><a href=\"foo\"></a></body></html>".to_string();
let dom = parse_document(RcDom::default(), opts)
.from_utf8()
.read_from(&mut data.as_bytes())
.unwrap();
let document = dom.document.borrow();
let html = document.children[0].borrow();
let body = html.children[1].borrow(); // Implicit head element at children[0].
{
let mut a = body.children[0].borrow_mut();
if let Element(_, _, ref mut attributes) = a.node {
attributes[0].value.push_tendril(&From::from("#anchor"));
}
}
let mut bytes = vec![];
serialize(&mut bytes, &dom.document, SerializeOpts::default()).unwrap();
let result = String::from_utf8(bytes).unwrap();
println!("{}", result);
}
这打印出以下内容:
<html><head></head><body><a href="foo#anchor"></a></body></html>
如您所见,我们可以通过children属性浏览子节点.
我们可以改变一个属性向量中存在的属性Element.