simple example of how to normalize and fix common errors in html

rcdom/examples/html_fixup.rs

@@ -0,0 +1,44 @@
+// illustrates how to generate valid xhtml from html fragment with common errors
+
+extern crate html5ever;
+extern crate markup5ever_rcdom as rcdom;
+
+use std::default::Default;
+
+use html5ever::driver::ParseOpts;
+use html5ever::tendril::{StrTendril, TendrilSink};
+use html5ever::{parse_fragment, serialize, QualName};
+use markup5ever::{local_name, namespace_url, ns};
+use rcdom::{RcDom, SerializableHandle};
+
+fn parse_and_serialize(input: StrTendril) -> StrTendril {
+    let dom = parse_fragment(
+        RcDom::default(),
+        ParseOpts::default(),
+        QualName::new(None, ns!(html), local_name!("body")),
+        vec![],
+    )
+    .one(input);
+    let inner: SerializableHandle = dom.document.children.borrow()[0].clone().into();
+
+    let mut result = vec![];
+    serialize(&mut result, &inner, Default::default()).unwrap();
+    StrTendril::try_from_byte_slice(&result).unwrap()
+}
+
+fn main() {
+    let sample_input = [
+        "<P>hello</P  >   ",
+        "http://example.com/page?query=1&foo=2",
+        "http://example.com/page?query=1&amp;foo=2",
+        "<p>foo",
+    ];
+
+    println!("\n-- normalize html and fix common errors --\n");
+    sample_input.iter().for_each(|input_ref| {
+        let input = *input_ref;
+        let result = parse_and_serialize(input.into());
+        println!("input:  {}", input);
+        println!("output: {}\n", result);
+    })
+}