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LibWeb: Add ad-hoc method for serializing CDATASection nodes to string

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Previously, CDATASection nodes were being serialized as if they were
text, which meant they were missing their start and end delimiters.
Occurrences of the '&', '<' and '>' characters were also being replaced
with their entity names.
This commit is contained in:
Tim Ledbetter 2024-02-18 14:27:25 +00:00 • committed by Andreas Kling
parent 70b9cddc48
commit 1a249f9d85
1 changed files with 22 additions and 1 deletions
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23
Userland/Libraries/LibWeb/DOMParsing/XMLSerializer.cpp
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@ -161,6 +161,7 @@ static WebIDL::ExceptionOr<String> serialize_text(DOM::Text const& text, Require
static WebIDL::ExceptionOr<String> serialize_document_fragment(DOM::DocumentFragment const& document_fragment, Optional<FlyString>& namespace_, HashMap<FlyString, Vector<Optional<FlyString>>>& namespace_prefix_map, u64& prefix_index, RequireWellFormed require_well_formed);
static WebIDL::ExceptionOr<String> serialize_document_type(DOM::DocumentType const& document_type, RequireWellFormed require_well_formed);
static WebIDL::ExceptionOr<String> serialize_processing_instruction(DOM::ProcessingInstruction const& processing_instruction, RequireWellFormed require_well_formed);
static WebIDL::ExceptionOr<String> serialize_cdata_section(DOM::CDATASection const& cdata_section, RequireWellFormed require_well_formed);
// https://w3c.github.io/DOM-Parsing/#dfn-xml-serialization-algorithm
WebIDL::ExceptionOr<String> serialize_node_to_xml_string_impl(JS::NonnullGCPtr<DOM::Node const> root, Optional<FlyString>& namespace_, HashMap<FlyString, Vector<Optional<FlyString>>>& namespace_prefix_map, u64& prefix_index, RequireWellFormed require_well_formed)
@ -194,7 +195,7 @@ WebIDL::ExceptionOr<String> serialize_node_to_xml_string_impl(JS::NonnullGCPtr<D
return serialize_comment(static_cast<DOM::Comment const&>(*root), require_well_formed);
}
if (is<DOM::Text>(*root) || is<DOM::CDATASection>(*root)) {
if (is<DOM::Text>(*root)) {
// -> Text
// Run the algorithm for XML serializing a Text node node.
return serialize_text(static_cast<DOM::Text const&>(*root), require_well_formed);
@ -218,6 +219,12 @@ WebIDL::ExceptionOr<String> serialize_node_to_xml_string_impl(JS::NonnullGCPtr<D
return serialize_processing_instruction(static_cast<DOM::ProcessingInstruction const&>(*root), require_well_formed);
}
if (is<DOM::CDATASection>(*root)) {
// Note: Serialization of CDATASection nodes is not mentioned in the specification, but treating CDATASection nodes as
// text leads to incorrect serialization.
return serialize_cdata_section(static_cast<DOM::CDATASection const&>(*root), require_well_formed);
}
if (is<DOM::Attr>(*root)) {
// -> An Attr object
// Return an empty string.
@ -898,4 +905,18 @@ static WebIDL::ExceptionOr<String> serialize_processing_instruction(DOM::Process
return MUST(markup.to_string());
}
// FIXME: This is ad-hoc
static WebIDL::ExceptionOr<String> serialize_cdata_section(DOM::CDATASection const& cdata_section, RequireWellFormed require_well_formed)
{
if (require_well_formed == RequireWellFormed::Yes && cdata_section.data().contains("]]>"sv))
return WebIDL::InvalidStateError::create(cdata_section.realm(), "CDATA section data contains a CDATA section end delimiter"_fly_string);
StringBuilder markup;
markup.append("<![CDATA["sv);
markup.append(cdata_section.data());
markup.append("]]>"sv);
return MUST(markup.to_string());
}
}