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LibWeb: Support for "content-language" http-equiv state

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Implemented support for setting the pragma-set default language in the
`<meta/>` tag with an `http-equiv` attribute `content-language`.
This commit is contained in:
Piotr
2024-11-05 09:12:11 +01:00
committed by Andreas Kling
parent 413cf6b329
commit 06154b87dd
13 changed files with 172 additions and 0 deletions
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32
Userland/Libraries/LibWeb/HTML/HTMLMetaElement.cpp
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@@ -5,6 +5,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/GenericLexer.h>
#include <LibWeb/Bindings/HTMLMetaElementPrototype.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/CSS/Parser/Parser.h>
@@ -121,6 +122,37 @@ void HTMLMetaElement::inserted()
// For meta elements with an http-equiv attribute in the X-UA-Compatible state, the content attribute must have a value that is an ASCII case-insensitive match for the string "IE=edge".
// User agents are required to ignore this pragma.
break;
case HttpEquivAttributeState::ContentLanguage: {
// https://html.spec.whatwg.org/multipage/semantics.html#attr-meta-http-equiv-content-language
// 1. If the meta element has no content attribute, then return.
if (!has_attribute(AttributeNames::content))
break;
// 2. If the element's content attribute contains a U+002C COMMA character (,) then return.
auto content = get_attribute_value(AttributeNames::content);
if (content.contains(","sv))
break;
// 3. Let input be the value of the element's content attribute.
// 4. Let position point at the first character of input.
GenericLexer lexer { content };
// 5. Skip ASCII whitespace within input given position.
lexer.ignore_while(Web::Infra::is_ascii_whitespace);
// 6. Collect a sequence of code points that are not ASCII whitespace from input given position.
// 7. Let candidate be the string that resulted from the previous step.
auto candidate = lexer.consume_until(Web::Infra::is_ascii_whitespace);
// 8. If candidate is the empty string, return.
if (candidate.is_empty())
break;
// 9. Set the pragma-set default language to candidate.
auto language = String::from_utf8_without_validation(candidate.bytes());
document().set_pragma_set_default_language(language);
break;
}
default:
dbgln("FIXME: Implement '{}' http-equiv state", get_attribute_value(AttributeNames::http_equiv));
break;