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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 servo_util::namespace;
use dom::attr::Attr;
use dom::bindings::codegen::InheritTypes::{ElementCast, TextCast, CommentCast};
use dom::bindings::codegen::InheritTypes::{DocumentTypeCast, CharacterDataCast};
use dom::bindings::codegen::InheritTypes::ProcessingInstructionCast;
use dom::bindings::js::JS;
use dom::characterdata::CharacterData;
use dom::comment::Comment;
use dom::documenttype::DocumentType;
use dom::element::Element;
use dom::node::NodeIterator;
use dom::node::{DoctypeNodeTypeId, DocumentFragmentNodeTypeId, CommentNodeTypeId};
use dom::node::{DocumentNodeTypeId, ElementNodeTypeId, ProcessingInstructionNodeTypeId};
use dom::node::{TextNodeTypeId, NodeHelpers};
use dom::processinginstruction::ProcessingInstruction;
use dom::text::Text;
pub fn serialize(iterator: &mut NodeIterator) -> ~str {
let mut html = ~"";
let mut open_elements: ~[~str] = ~[];
for node in *iterator {
while open_elements.len() > iterator.depth {
html.push_str(~"</" + open_elements.pop().unwrap().as_slice() + ">");
}
html.push_str(
match node.type_id() {
ElementNodeTypeId(..) => {
let elem: JS<Element> = ElementCast::to(&node);
serialize_elem(&elem, &mut open_elements)
}
CommentNodeTypeId => {
let comment: JS<Comment> = CommentCast::to(&node);
serialize_comment(&comment)
}
TextNodeTypeId => {
let text: JS<Text> = TextCast::to(&node);
serialize_text(&text)
}
DoctypeNodeTypeId => {
let doctype: JS<DocumentType> = DocumentTypeCast::to(&node);
serialize_doctype(&doctype)
}
ProcessingInstructionNodeTypeId => {
let processing_instruction: JS<ProcessingInstruction> = ProcessingInstructionCast::to(&node);
serialize_processing_instruction(&processing_instruction)
}
DocumentFragmentNodeTypeId => {
~""
}
DocumentNodeTypeId => {
fail!("It shouldn't be possible to serialize a document node")
}
}
);
}
while open_elements.len() > 0 {
html.push_str(~"</" + open_elements.pop().unwrap().as_slice() + ">");
}
html
}
fn serialize_comment(comment: &JS<Comment>) -> ~str {
~"<!--" + comment.get().characterdata.data + "-->"
}
fn serialize_text(text: &JS<Text>) -> ~str {
match text.get().characterdata.node.parent_node {
Some(ref parent) if parent.is_element() => {
let elem: JS<Element> = ElementCast::to(parent);
match elem.get().tag_name.as_slice() {
"style" | "script" | "xmp" | "iframe" |
"noembed" | "noframes" | "plaintext" |
"noscript" if elem.get().namespace == namespace::HTML => {
text.get().characterdata.data.clone()
},
_ => escape(text.get().characterdata.data, false)
}
}
_ => escape(text.get().characterdata.data, false)
}
}
fn serialize_processing_instruction(processing_instruction: &JS<ProcessingInstruction>) -> ~str {
~"<?" + processing_instruction.get().target + " " + processing_instruction.get().characterdata.data + "?>"
}
fn serialize_doctype(doctype: &JS<DocumentType>) -> ~str {
~"<!DOCTYPE" + doctype.get().name + ">"
}
fn serialize_elem(elem: &JS<Element>, open_elements: &mut ~[~str]) -> ~str {
let mut rv = ~"<" + elem.get().tag_name;
for attr in elem.get().attrs.iter() {
rv.push_str(serialize_attr(attr));
};
rv.push_str(">");
match elem.get().tag_name.as_slice() {
"pre" | "listing" | "textarea" if elem.get().namespace == namespace::HTML => {
match elem.get().node.first_child {
Some(ref child) if child.is_text() => {
let text: JS<CharacterData> = CharacterDataCast::to(child);
if text.get().data.len() > 0 && text.get().data[0] == 0x0A as u8 {
rv.push_str("\x0A");
}
},
_ => {}
}
},
_ => {}
}
if !elem.get().is_void() {
open_elements.push(elem.get().tag_name.clone());
}
rv
}
fn serialize_attr(attr: &JS<Attr>) -> ~str {
let attr_name = if attr.get().namespace == namespace::XML {
~"xml:" + attr.get().local_name.clone()
} else if attr.get().namespace == namespace::XMLNS &&
attr.get().local_name.as_slice() == "xmlns" {
~"xmlns"
} else if attr.get().namespace == namespace::XMLNS {
~"xmlns:" + attr.get().local_name.clone()
} else if attr.get().namespace == namespace::XLink {
~"xlink:" + attr.get().local_name.clone()
} else {
attr.get().name.clone()
};
~" " + attr_name + "=\"" + escape(attr.get().value, true) + "\""
}
fn escape(string: &str, attr_mode: bool) -> ~str {
let replaced = string.replace("&", "&").replace("\xA0", " ");
match attr_mode {
true => {
replaced.replace("\"", """)
},
false => {
replaced.replace("<", "<").replace(">", ">")
}
}
}
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