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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use dom::attr::{Attr, AttrHelpers};
use dom::bindings::codegen::InheritTypes::{ElementCast, TextCast, CommentCast, NodeCast};
use dom::bindings::codegen::InheritTypes::{DocumentTypeCast, CharacterDataCast};
use dom::bindings::codegen::InheritTypes::ProcessingInstructionCast;
use dom::bindings::js::JSRef;
use dom::characterdata::CharacterData;
use dom::comment::Comment;
use dom::documenttype::DocumentType;
use dom::element::{Element, ElementHelpers};
use dom::node::{Node, NodeHelpers, NodeTypeId, NodeIterator};
use dom::processinginstruction::ProcessingInstruction;
use dom::text::Text;
use std::borrow::ToOwned;
#[allow(unrooted_must_root)]
pub fn serialize(iterator: &mut NodeIterator) -> String {
let mut html = String::new();
let mut open_elements: Vec<String> = vec!();
let depth = iterator.depth;
for node in *iterator {
while open_elements.len() > depth {
html.push_str("</");
html.push_str(open_elements.pop().unwrap().as_slice());
html.push_str(">");
}
match node.type_id() {
NodeTypeId::Element(..) => {
let elem: JSRef<Element> = ElementCast::to_ref(node).unwrap();
serialize_elem(elem, &mut open_elements, &mut html)
}
NodeTypeId::Comment => {
let comment: JSRef<Comment> = CommentCast::to_ref(node).unwrap();
serialize_comment(comment, &mut html)
}
NodeTypeId::Text => {
let text: JSRef<Text> = TextCast::to_ref(node).unwrap();
serialize_text(text, &mut html)
}
NodeTypeId::DocumentType => {
let doctype: JSRef<DocumentType> = DocumentTypeCast::to_ref(node).unwrap();
serialize_doctype(doctype, &mut html)
}
NodeTypeId::ProcessingInstruction => {
let processing_instruction: JSRef<ProcessingInstruction> =
ProcessingInstructionCast::to_ref(node).unwrap();
serialize_processing_instruction(processing_instruction, &mut html)
}
NodeTypeId::DocumentFragment => {}
NodeTypeId::Document => {
panic!("It shouldn't be possible to serialize a document node")
}
}
}
while open_elements.len() > 0 {
html.push_str("</");
html.push_str(open_elements.pop().unwrap().as_slice());
html.push_str(">");
}
html
}
fn serialize_comment(comment: JSRef<Comment>, html: &mut String) {
html.push_str("<!--");
html.push_str(comment.characterdata().data().as_slice());
html.push_str("-->");
}
fn serialize_text(text: JSRef<Text>, html: &mut String) {
let text_node: JSRef<Node> = NodeCast::from_ref(text);
match text_node.parent_node().map(|node| node.root()) {
Some(ref parent) if parent.r().is_element() => {
let elem: JSRef<Element> = ElementCast::to_ref(parent.r()).unwrap();
match elem.local_name().as_slice() {
"style" | "script" | "xmp" | "iframe" |
"noembed" | "noframes" | "plaintext" |
"noscript" if *elem.namespace() == ns!(HTML)
=> html.push_str(text.characterdata().data().as_slice()),
_ => escape(text.characterdata().data().as_slice(), false, html)
}
}
_ => escape(text.characterdata().data().as_slice(), false, html)
}
}
fn serialize_processing_instruction(processing_instruction: JSRef<ProcessingInstruction>,
html: &mut String) {
html.push_str("<?");
html.push_str(processing_instruction.target().as_slice());
html.push(' ');
html.push_str(processing_instruction.characterdata().data().as_slice());
html.push_str("?>");
}
fn serialize_doctype(doctype: JSRef<DocumentType>, html: &mut String) {
html.push_str("<!DOCTYPE");
html.push_str(doctype.name().as_slice());
html.push('>');
}
fn serialize_elem(elem: JSRef<Element>, open_elements: &mut Vec<String>, html: &mut String) {
html.push('<');
html.push_str(elem.local_name().as_slice());
for attr in elem.attrs().iter() {
let attr = attr.root();
serialize_attr(attr.r(), html);
};
html.push('>');
match elem.local_name().as_slice() {
"pre" | "listing" | "textarea" if *elem.namespace() == ns!(HTML) => {
let node: JSRef<Node> = NodeCast::from_ref(elem);
match node.first_child().map(|child| child.root()) {
Some(ref child) if child.r().is_text() => {
let text: JSRef<CharacterData> = CharacterDataCast::to_ref(child.r()).unwrap();
if text.data().len() > 0 && text.data().as_slice().char_at(0) == '\n' {
html.push('\x0A');
}
},
_ => {}
}
},
_ => {}
}
if !(elem.is_void()) {
open_elements.push(elem.local_name().as_slice().to_owned());
}
}
fn serialize_attr(attr: JSRef<Attr>, html: &mut String) {
html.push(' ');
if *attr.namespace() == ns!(XML) {
html.push_str("xml:");
html.push_str(attr.local_name().as_slice());
} else if *attr.namespace() == ns!(XMLNS) &&
*attr.local_name() == atom!("xmlns") {
html.push_str("xmlns");
} else if *attr.namespace() == ns!(XMLNS) {
html.push_str("xmlns:");
html.push_str(attr.local_name().as_slice());
} else if *attr.namespace() == ns!(XLink) {
html.push_str("xlink:");
html.push_str(attr.local_name().as_slice());
} else {
html.push_str(attr.name().as_slice());
};
html.push_str("=\"");
escape(attr.value().as_slice(), true, html);
html.push('"');
}
fn escape(string: &str, attr_mode: bool, html: &mut String) {
for c in string.chars() {
match c {
'&' => html.push_str("&"),
'\u{A0}' => html.push_str(" "),
'"' if attr_mode => html.push_str("""),
'<' if !attr_mode => html.push_str("<"),
'>' if !attr_mode => html.push_str(">"),
c => html.push(c),
}
}
}
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