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83 lines
3.7 KiB
C++
83 lines
3.7 KiB
C++
/*
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* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/DOMParserPrototype.h>
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#include <LibWeb/Bindings/MainThreadVM.h>
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#include <LibWeb/HTML/DOMParser.h>
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#include <LibWeb/HTML/Parser/HTMLParser.h>
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#include <LibWeb/HTML/Scripting/Environments.h>
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#include <LibWeb/XML/XMLDocumentBuilder.h>
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namespace Web::HTML {
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WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMParser>> DOMParser::construct_impl(JS::Realm& realm)
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{
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return MUST_OR_THROW_OOM(realm.heap().allocate<DOMParser>(realm, realm));
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}
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DOMParser::DOMParser(JS::Realm& realm)
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: PlatformObject(realm)
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{
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}
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DOMParser::~DOMParser() = default;
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JS::ThrowCompletionOr<void> DOMParser::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMParserPrototype>(realm, "DOMParser"));
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return {};
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}
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// https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring
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JS::NonnullGCPtr<DOM::Document> DOMParser::parse_from_string(DeprecatedString const& string, Bindings::DOMParserSupportedType type)
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{
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// 1. Let document be a new Document, whose content type is type and url is this's relevant global object's associated Document's URL.
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auto document = DOM::Document::create(realm(), verify_cast<HTML::Window>(relevant_global_object(*this)).associated_document().url()).release_value_but_fixme_should_propagate_errors();
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document->set_content_type(Bindings::idl_enum_to_deprecated_string(type));
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// 2. Switch on type:
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if (type == Bindings::DOMParserSupportedType::Text_Html) {
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// -> "text/html"
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// 1. Set document's type to "html".
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document->set_document_type(DOM::Document::Type::HTML);
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// 2. Create an HTML parser parser, associated with document.
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// 3. Place string into the input stream for parser. The encoding confidence is irrelevant.
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// FIXME: We don't have the concept of encoding confidence yet.
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auto parser = HTMLParser::create(*document, string, "UTF-8");
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// 4. Start parser and let it run until it has consumed all the characters just inserted into the input stream.
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// FIXME: This is to match the default URL. Instead, pass in this's relevant global object's associated Document's URL.
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parser->run("about:blank"sv);
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} else {
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// -> Otherwise
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// 1. Create an XML parser parse, associated with document, and with XML scripting support disabled.
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XML::Parser parser(string, { .resolve_external_resource = resolve_xml_resource });
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XMLDocumentBuilder builder { *document, XMLScriptingSupport::Disabled };
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// 2. Parse string using parser.
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auto result = parser.parse_with_listener(builder);
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// 3. If the previous step resulted in an XML well-formedness or XML namespace well-formedness error, then:
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if (result.is_error() || builder.has_error()) {
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// NOTE: The XML parsing can produce nodes before it hits an error, just remove them.
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// 1. Assert: document has no child nodes.
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document->remove_all_children(true);
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// 2. Let root be the result of creating an element given document, "parsererror", and "http://www.mozilla.org/newlayout/xml/parsererror.xml".
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auto root = DOM::create_element(*document, "parsererror", "http://www.mozilla.org/newlayout/xml/parsererror.xml").release_value_but_fixme_should_propagate_errors();
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// FIXME: 3. Optionally, add attributes or children to root to describe the nature of the parsing error.
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// 4. Append root to document.
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MUST(document->append_child(*root));
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}
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}
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// 3. Return document.
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return document;
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}
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}
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