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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::namespace;
use dom::attr::Attr;
use dom::node::NodeIterator;
use dom::node::{DoctypeNodeTypeId, DocumentFragmentNodeTypeId, CommentNodeTypeId, DocumentNodeTypeId, ElementNodeTypeId, TextNodeTypeId, AbstractNode};
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() + ">");
}
html.push_str(
match node.type_id() {
ElementNodeTypeId(..) => {
serialize_elem(node, &mut open_elements)
}
CommentNodeTypeId => {
serialize_comment(node)
}
TextNodeTypeId => {
serialize_text(node)
}
DoctypeNodeTypeId => {
serialize_doctype(node)
}
DocumentFragmentNodeTypeId => {
~""
}
DocumentNodeTypeId(_) => {
fail!("It shouldn't be possible to serialize a document node")
}
}
);
}
while open_elements.len() > 0 {
html.push_str(~"</" + open_elements.pop() + ">");
}
html
}
fn serialize_comment(node: AbstractNode) -> ~str {
node.with_imm_characterdata(|comment| {
~"<!--" + comment.data + "-->"
})
}
fn serialize_text(node: AbstractNode) -> ~str {
node.with_imm_characterdata(|text| {
match node.parent_node() {
Some(parent) if parent.is_element() => {
parent.with_imm_element(|elem| {
match elem.tag_name.as_slice() {
"style" | "script" | "xmp" | "iframe" |
"noembed" | "noframes" | "plaintext" |
"noscript" if elem.namespace == namespace::HTML => {
text.data.clone()
},
_ => escape(text.data, false)
}
})
},
_ => escape(text.data, false)
}
})
}
fn serialize_doctype(node: AbstractNode) -> ~str {
node.with_imm_doctype(|doctype| {
~"<!DOCTYPE" + doctype.name + ">"
})
}
fn serialize_elem(node: AbstractNode, open_elements: &mut ~[~str]) -> ~str {
node.with_imm_element(|elem| {
let mut rv = ~"<" + elem.tag_name;
for attr in elem.attrs.iter() {
rv.push_str(serialize_attr(attr));
};
rv.push_str(">");
match elem.tag_name.as_slice() {
"pre" | "listing" | "textarea" if
elem.namespace == namespace::HTML => {
match node.first_child() {
Some(child) if child.is_text() => {
child.with_imm_characterdata(|text| {
if text.data[0] == 0x0A as u8 {
rv.push_str("\x0A");
}
})
},
_ => {}
}
},
_ => {}
}
if !elem.is_void() {
open_elements.push(elem.tag_name.clone());
}
rv
})
}
fn serialize_attr(attr: &@mut Attr) -> ~str {
let attr_name = if attr.namespace == namespace::XML {
~"xml:" + attr.local_name.clone()
} else if attr.namespace == namespace::XMLNS &&
attr.local_name.as_slice() == "xmlns" {
~"xmlns"
} else if attr.namespace == namespace::XMLNS {
~"xmlns:" + attr.local_name.clone()
} else if attr.namespace == namespace::XLink {
~"xlink:" + attr.local_name.clone()
} else {
attr.name.clone()
};
~" " + attr_name + "=\"" + escape(attr.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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