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LibWeb: Serialize HTML attribute names as per spec

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Lorenz A 2025-09-13 22:55:08 +02:00 • committed by Jelle Raaijmakers
commit 47796e7967
Notes: github-actions[bot] 2025-09-15 08:09:19 +00:00
3 changed files with 606 additions and 10 deletions
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37
Libraries/LibWeb/HTML/Parser/HTMLParser.cpp
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@ -5205,22 +5205,39 @@ String HTMLParser::serialize_html_fragment(DOM::Node const& node, SerializableSh
builder.append(' ');
// An attribute's serialized name for the purposes of the previous paragraph must be determined as follows:
// NOTE: As far as I can tell, these steps are equivalent to just using the qualified name.
//
// -> If the attribute has no namespace:
// The attribute's serialized name is the attribute's local name.
if (!attribute.namespace_uri().has_value()) {
// The attribute's serialized name is the attribute's local name.
builder.append(attribute.local_name());
}
// -> If the attribute is in the XML namespace:
// The attribute's serialized name is the string "xml:" followed by the attribute's local name.
else if (attribute.namespace_uri() == Namespace::XML) {
// The attribute's serialized name is the string "xml:" followed by the attribute's local name.
builder.append("xml:"sv);
builder.append(attribute.local_name());
}
// -> If the attribute is in the XMLNS namespace and the attribute's local name is xmlns:
// The attribute's serialized name is the string "xmlns".
else if (attribute.namespace_uri() == Namespace::XMLNS && attribute.local_name() == "xmlns") {
// The attribute's serialized name is the string "xmlns".
builder.append("xmlns"sv);
}
// -> If the attribute is in the XMLNS namespace and the attribute's local name is not xmlns:
// The attribute's serialized name is the string "xmlns:" followed by the attribute's local name.
else if (attribute.namespace_uri() == Namespace::XMLNS) {
// The attribute's serialized name is the string "xmlns:" followed by the attribute's local name.
builder.append("xmlns:"sv);
builder.append(attribute.local_name());
}
// -> If the attribute is in the XLink namespace:
// The attribute's serialized name is the string "xlink:" followed by the attribute's local name.
else if (attribute.namespace_uri() == Namespace::XLink) {
// The attribute's serialized name is the string "xlink:" followed by the attribute's local name.
builder.append("xlink:"sv);
builder.append(attribute.local_name());
}
// -> If the attribute is in some other namespace:
// The attribute's serialized name is the attribute's qualified name.
builder.append(attribute.name());
else {
// The attribute's serialized name is the attribute's qualified name.
builder.append(attribute.name());
}
builder.append("=\""sv);
builder.append(escape_string(attribute.value().code_points(), AttributeMode::Yes));