LibWeb: Use is_ascii_case_insensitive_match() where the spec says to

Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp

@@ -11,6 +11,7 @@
 #include <LibWeb/CSS/Parser/Parser.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/Element.h>
+#include <LibWeb/Infra/Strings.h>
 
 namespace Web::CSS {
 
@@ -88,7 +89,7 @@ WebIDL::ExceptionOr<void> PropertyOwningCSSStyleDeclaration::set_property(Proper
     }
 
     // 4. If priority is not the empty string and is not an ASCII case-insensitive match for the string "important", then return.
-    if (!priority.is_empty() && !priority.equals_ignoring_case("important"sv))
+    if (!priority.is_empty() && !Infra::is_ascii_case_insensitive_match(priority, "important"sv))
         return {};
 
     // 5. Let component value list be the result of parsing value for property property.

Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp

@@ -32,6 +32,7 @@
 #include <LibWeb/CSS/StyleValue.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/Dump.h>
+#include <LibWeb/Infra/Strings.h>
 
 static void log_parse_error(SourceLocation const& location = SourceLocation::current())
 {
@@ -1895,7 +1896,7 @@ Optional<Declaration> Parser::consume_a_declaration(TokenStream<T>& tokens)
         Optional<size_t> important_index;
         for (size_t i = declaration_values.size() - 1; i > 0; i--) {
             auto value = declaration_values[i];
-            if (value.is(Token::Type::Ident) && value.token().ident().equals_ignoring_case("important"sv)) {
+            if (value.is(Token::Type::Ident) && Infra::is_ascii_case_insensitive_match(value.token().ident(), "important"sv)) {
                 important_index = i;
                 break;
             }

Userland/Libraries/LibWeb/DOM/Document.cpp

@@ -63,6 +63,7 @@
 #include <LibWeb/HTML/Window.h>
 #include <LibWeb/HTML/WindowProxy.h>
 #include <LibWeb/HighResolutionTime/TimeOrigin.h>
+#include <LibWeb/Infra/Strings.h>
 #include <LibWeb/Layout/BlockFormattingContext.h>
 #include <LibWeb/Layout/InitialContainingBlock.h>
 #include <LibWeb/Layout/TreeBuilder.h>
@@ -1270,42 +1271,44 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Event>> Document::create_event(DeprecatedSt
 
     // 2. If interface is an ASCII case-insensitive match for any of the strings in the first column in the following table,
     //      then set constructor to the interface in the second column on the same row as the matching string:
-    auto interface_lowercase = interface.to_lowercase();
-    if (interface_lowercase == "beforeunloadevent") {
+    if (Infra::is_ascii_case_insensitive_match(interface, "beforeunloadevent"sv)) {
         event = TRY(Event::create(realm, "")); // FIXME: Create BeforeUnloadEvent
-    } else if (interface_lowercase == "compositionevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "compositionevent"sv)) {
         event = TRY(Event::create(realm, "")); // FIXME: Create CompositionEvent
-    } else if (interface_lowercase == "customevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "customevent"sv)) {
         event = TRY(CustomEvent::create(realm, ""));
-    } else if (interface_lowercase == "devicemotionevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "devicemotionevent"sv)) {
         event = TRY(Event::create(realm, "")); // FIXME: Create DeviceMotionEvent
-    } else if (interface_lowercase == "deviceorientationevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "deviceorientationevent"sv)) {
         event = TRY(Event::create(realm, "")); // FIXME: Create DeviceOrientationEvent
-    } else if (interface_lowercase == "dragevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "dragevent"sv)) {
         event = TRY(Event::create(realm, "")); // FIXME: Create DragEvent
-    } else if (interface_lowercase.is_one_of("event", "events")) {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "event"sv)
+        || Infra::is_ascii_case_insensitive_match(interface, "events"sv)) {
         event = TRY(Event::create(realm, ""));
-    } else if (interface_lowercase == "focusevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "focusevent"sv)) {
         event = UIEvents::FocusEvent::create(realm, "");
-    } else if (interface_lowercase == "hashchangeevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "hashchangeevent"sv)) {
         event = TRY(Event::create(realm, "")); // FIXME: Create HashChangeEvent
-    } else if (interface_lowercase == "htmlevents") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "htmlevents"sv)) {
         event = TRY(Event::create(realm, ""));
-    } else if (interface_lowercase == "keyboardevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "keyboardevent"sv)) {
         event = UIEvents::KeyboardEvent::create(realm, "");
-    } else if (interface_lowercase == "messageevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "messageevent"sv)) {
         event = TRY(HTML::MessageEvent::create(realm, ""));
-    } else if (interface_lowercase.is_one_of("mouseevent", "mouseevents")) {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "mouseevent"sv)
+        || Infra::is_ascii_case_insensitive_match(interface, "mouseevents"sv)) {
         event = TRY(UIEvents::MouseEvent::create(realm, ""));
-    } else if (interface_lowercase == "storageevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "storageevent"sv)) {
         event = TRY(Event::create(realm, "")); // FIXME: Create StorageEvent
-    } else if (interface_lowercase == "svgevents") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "svgevents"sv)) {
         event = TRY(Event::create(realm, ""));
-    } else if (interface_lowercase == "textevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "textevent"sv)) {
         event = TRY(Event::create(realm, "")); // FIXME: Create CompositionEvent
-    } else if (interface_lowercase == "touchevent") {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "touchevent"sv)) {
         event = TRY(Event::create(realm, "")); // FIXME: Create TouchEvent
-    } else if (interface_lowercase.is_one_of("uievent", "uievents")) {
+    } else if (Infra::is_ascii_case_insensitive_match(interface, "uievent"sv)
+        || Infra::is_ascii_case_insensitive_match(interface, "uievents"sv)) {
         event = UIEvents::UIEvent::create(realm, "");
     }
 

Userland/Libraries/LibWeb/DOM/Element.cpp

@@ -36,6 +36,7 @@
 #include <LibWeb/HTML/HTMLTextAreaElement.h>
 #include <LibWeb/HTML/Parser/HTMLParser.h>
 #include <LibWeb/Infra/CharacterTypes.h>
+#include <LibWeb/Infra/Strings.h>
 #include <LibWeb/Layout/BlockContainer.h>
 #include <LibWeb/Layout/InitialContainingBlock.h>
 #include <LibWeb/Layout/InlineNode.h>
@@ -1121,7 +1122,8 @@ WebIDL::ExceptionOr<void> Element::insert_adjacent_html(DeprecatedString positio
     // 1. Use the first matching item from this list:
     // - If position is an ASCII case-insensitive match for the string "beforebegin"
     // - If position is an ASCII case-insensitive match for the string "afterend"
-    if (position.equals_ignoring_case("beforebegin"sv) || position.equals_ignoring_case("afterend"sv)) {
+    if (Infra::is_ascii_case_insensitive_match(position, "beforebegin"sv)
+        || Infra::is_ascii_case_insensitive_match(position, "afterend"sv)) {
         // Let context be the context object's parent.
         context = this->parent();
 
@@ -1131,7 +1133,8 @@ WebIDL::ExceptionOr<void> Element::insert_adjacent_html(DeprecatedString positio
     }
     // - If position is an ASCII case-insensitive match for the string "afterbegin"
     // - If position is an ASCII case-insensitive match for the string "beforeend"
-    else if (position.equals_ignoring_case("afterbegin"sv) || position.equals_ignoring_case("beforeend"sv)) {
+    else if (Infra::is_ascii_case_insensitive_match(position, "afterbegin"sv)
+        || Infra::is_ascii_case_insensitive_match(position, "beforeend"sv)) {
         // Let context be the context object.
         context = this;
     }
@@ -1162,25 +1165,25 @@ WebIDL::ExceptionOr<void> Element::insert_adjacent_html(DeprecatedString positio
     // 4. Use the first matching item from this list:
 
     // - If position is an ASCII case-insensitive match for the string "beforebegin"
-    if (position.equals_ignoring_case("beforebegin"sv)) {
+    if (Infra::is_ascii_case_insensitive_match(position, "beforebegin"sv)) {
         // Insert fragment into the context object's parent before the context object.
         parent()->insert_before(fragment, this);
     }
 
     // - If position is an ASCII case-insensitive match for the string "afterbegin"
-    else if (position.equals_ignoring_case("afterbegin"sv)) {
+    else if (Infra::is_ascii_case_insensitive_match(position, "afterbegin"sv)) {
         // Insert fragment into the context object before its first child.
         insert_before(fragment, first_child());
     }
 
     // - If position is an ASCII case-insensitive match for the string "beforeend"
-    else if (position.equals_ignoring_case("beforeend"sv)) {
+    else if (Infra::is_ascii_case_insensitive_match(position, "beforeend"sv)) {
         // Append fragment to the context object.
         TRY(append_child(fragment));
     }
 
     // - If position is an ASCII case-insensitive match for the string "afterend"
-    else if (position.equals_ignoring_case("afterend"sv)) {
+    else if (Infra::is_ascii_case_insensitive_match(position, "afterend"sv)) {
         // Insert fragment into the context object's parent before the context object's next sibling.
         parent()->insert_before(fragment, next_sibling());
     }
@@ -1191,7 +1194,7 @@ WebIDL::ExceptionOr<void> Element::insert_adjacent_html(DeprecatedString positio
 WebIDL::ExceptionOr<JS::GCPtr<Node>> Element::insert_adjacent(DeprecatedString const& where, JS::NonnullGCPtr<Node> node)
 {
     // To insert adjacent, given an element element, string where, and a node node, run the steps associated with the first ASCII case-insensitive match for where:
-    if (where.equals_ignoring_case("beforebegin"sv)) {
+    if (Infra::is_ascii_case_insensitive_match(where, "beforebegin"sv)) {
         // -> "beforebegin"
         // If element’s parent is null, return null.
         if (!parent())
@@ -1201,19 +1204,19 @@ WebIDL::ExceptionOr<JS::GCPtr<Node>> Element::insert_adjacent(DeprecatedString c
         return JS::GCPtr<Node> { TRY(parent()->pre_insert(move(node), this)) };
     }
 
-    if (where.equals_ignoring_case("afterbegin"sv)) {
+    if (Infra::is_ascii_case_insensitive_match(where, "afterbegin"sv)) {
         // -> "afterbegin"
         // Return the result of pre-inserting node into element before element’s first child.
         return JS::GCPtr<Node> { TRY(pre_insert(move(node), first_child())) };
     }
 
-    if (where.equals_ignoring_case("beforeend"sv)) {
+    if (Infra::is_ascii_case_insensitive_match(where, "beforeend"sv)) {
         // -> "beforeend"
         // Return the result of pre-inserting node into element before null.
         return JS::GCPtr<Node> { TRY(pre_insert(move(node), nullptr)) };
     }
 
-    if (where.equals_ignoring_case("afterend"sv)) {
+    if (Infra::is_ascii_case_insensitive_match(where, "afterend"sv)) {
         // -> "afterend"
         // If element’s parent is null, return null.
         if (!parent())

Userland/Libraries/LibWeb/DOMParsing/XMLSerializer.cpp

@@ -15,6 +15,7 @@
 #include <LibWeb/DOM/Text.h>
 #include <LibWeb/DOMParsing/XMLSerializer.h>
 #include <LibWeb/HTML/HTMLTemplateElement.h>
+#include <LibWeb/Infra/Strings.h>
 #include <LibWeb/Namespace.h>
 #include <LibWeb/WebIDL/ExceptionOr.h>
 
@@ -859,7 +860,7 @@ static WebIDL::ExceptionOr<DeprecatedString> serialize_processing_instruction(DO
         if (processing_instruction.target().contains(':'))
             return WebIDL::InvalidStateError::create(processing_instruction.realm(), "Processing instruction target contains a colon");
 
-        if (processing_instruction.target().equals_ignoring_case("xml"sv))
+        if (Infra::is_ascii_case_insensitive_match(processing_instruction.target(), "xml"sv))
             return WebIDL::InvalidStateError::create(processing_instruction.realm(), "Processing instruction target is equal to 'xml'");
 
         // 2. If the require well-formed flag is set (its value is true), and node's data contains characters that are not matched by the XML Char production or contains

Userland/Libraries/LibWeb/Fetch/Infrastructure/NoSniffBlocking.cpp

@@ -8,6 +8,7 @@
 #include <LibWeb/Fetch/Infrastructure/HTTP/Requests.h>
 #include <LibWeb/Fetch/Infrastructure/HTTP/Responses.h>
 #include <LibWeb/Fetch/Infrastructure/NoSniffBlocking.h>
+#include <LibWeb/Infra/Strings.h>
 
 namespace Web::Fetch::Infrastructure {
 
@@ -22,7 +23,7 @@ ErrorOr<bool> determine_nosniff(HeaderList const& list)
         return false;
 
     // 3. If values[0] is an ASCII case-insensitive match for "nosniff", then return true.
-    if (!values->is_empty() && values->at(0).equals_ignoring_case("nosniff"sv))
+    if (!values->is_empty() && Infra::is_ascii_case_insensitive_match(values->at(0), "nosniff"sv))
         return true;
 
     // 4. Return false.

Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp

@@ -22,6 +22,7 @@
 #include <LibWeb/HTML/Window.h>
 #include <LibWeb/HTML/WindowProxy.h>
 #include <LibWeb/HighResolutionTime/TimeOrigin.h>
+#include <LibWeb/Infra/Strings.h>
 #include <LibWeb/Layout/BreakNode.h>
 #include <LibWeb/Layout/InitialContainingBlock.h>
 #include <LibWeb/Layout/TextNode.h>
@@ -627,13 +628,13 @@ BrowsingContext::ChosenBrowsingContext BrowsingContext::choose_a_browsing_contex
     auto sandboxing_flag_set = active_document()->active_sandboxing_flag_set();
 
     // 4. If name is the empty string or an ASCII case-insensitive match for "_self", then set chosen to current.
-    if (name.is_empty() || name.equals_ignoring_case("_self"sv)) {
+    if (name.is_empty() || Infra::is_ascii_case_insensitive_match(name, "_self"sv)) {
         chosen = this;
     }
 
     // 5. Otherwise, if name is an ASCII case-insensitive match for "_parent", set chosen to current's parent browsing
     //    context, if any, and current otherwise.
-    else if (name.equals_ignoring_case("_parent"sv)) {
+    else if (Infra::is_ascii_case_insensitive_match(name, "_parent"sv)) {
         if (auto parent = this->parent())
             chosen = parent;
         else
@@ -642,7 +643,7 @@ BrowsingContext::ChosenBrowsingContext BrowsingContext::choose_a_browsing_contex
 
     // 6. Otherwise, if name is an ASCII case-insensitive match for "_top", set chosen to current's top-level browsing
     //    context, if any, and current otherwise.
-    else if (name.equals_ignoring_case("_top"sv)) {
+    else if (Infra::is_ascii_case_insensitive_match(name, "_top"sv)) {
         chosen = &top_level_browsing_context();
     }
 
@@ -652,7 +653,7 @@ BrowsingContext::ChosenBrowsingContext BrowsingContext::choose_a_browsing_contex
     //           set chosen to that browsing context. If there are multiple matching browsing contexts, the user agent
     //           should set chosen to one in some arbitrary consistent manner, such as the most recently opened, most
     //           recently focused, or more closely related.
-    else if (!name.equals_ignoring_case("_blank"sv)) {
+    else if (!Infra::is_ascii_case_insensitive_match(name, "_blank"sv)) {
         dbgln("FIXME: Find matching browser context for name {}", name);
         chosen = this;
     } else {
@@ -715,7 +716,7 @@ BrowsingContext::ChosenBrowsingContext BrowsingContext::choose_a_browsing_contex
             // FIXME: Our BrowsingContexts do not have SandboxingFlagSets yet, only documents do
 
             // 6. If name is not an ASCII case-insensitive match for "_blank", then set chosen's name to name.
-            if (!name.equals_ignoring_case("_blank"sv))
+            if (!Infra::is_ascii_case_insensitive_match(name, "_blank"sv))
                 chosen->set_name(name);
         }
 

Userland/Libraries/LibWeb/HTML/HTMLHyperlinkElementUtils.cpp

@@ -8,6 +8,7 @@
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/HTML/HTMLHyperlinkElementUtils.h>
 #include <LibWeb/Infra/CharacterTypes.h>
+#include <LibWeb/Infra/Strings.h>
 #include <LibWeb/Loader/FrameLoader.h>
 
 namespace Web::HTML {
@@ -569,7 +570,7 @@ bool HTMLHyperlinkElementUtils::get_an_elements_noopener(StringView target) cons
 
     // 2. If element's link types do not include the opener keyword and
     //    target is an ASCII case-insensitive match for "_blank", then return true.
-    if (!link_types.contains_slow("opener"sv) && target.equals_ignoring_case("_blank"sv))
+    if (!link_types.contains_slow("opener"sv) && Infra::is_ascii_case_insensitive_match(target, "_blank"sv))
         return true;
 
     // 3. Return false.

Userland/Libraries/LibWeb/HTML/HTMLScriptElement.cpp

@@ -18,6 +18,7 @@
 #include <LibWeb/HTML/Scripting/ClassicScript.h>
 #include <LibWeb/HTML/Scripting/Fetching.h>
 #include <LibWeb/Infra/CharacterTypes.h>
+#include <LibWeb/Infra/Strings.h>
 #include <LibWeb/Loader/ResourceLoader.h>
 #include <LibWeb/MimeSniff/MimeType.h>
 
@@ -189,12 +190,12 @@ void HTMLScriptElement::prepare_script()
         m_script_type = ScriptType::Classic;
     }
     // 10. Otherwise, if the script block's type string is an ASCII case-insensitive match for the string "module",
-    else if (script_block_type.equals_ignoring_case("module"sv)) {
+    else if (Infra::is_ascii_case_insensitive_match(script_block_type, "module"sv)) {
         // then set el's type to "module".
         m_script_type = ScriptType::Module;
     }
     // 11. Otherwise, if the script block's type string is an ASCII case-insensitive match for the string "importmap",
-    else if (script_block_type.equals_ignoring_case("importmap"sv)) {
+    else if (Infra::is_ascii_case_insensitive_match(script_block_type, "importmap"sv)) {
         // then set el's type to "importmap".
         m_script_type = ScriptType::ImportMap;
     }
@@ -251,13 +252,14 @@ void HTMLScriptElement::prepare_script()
         event = event.trim(Infra::ASCII_WHITESPACE);
 
         // 4. If for is not an ASCII case-insensitive match for the string "window", then return.
-        if (!for_.equals_ignoring_case("window"sv)) {
+        if (!Infra::is_ascii_case_insensitive_match(for_, "window"sv)) {
             dbgln("HTMLScriptElement: Refusing to run classic script because the provided 'for' attribute is not equal to 'window'");
             return;
         }
 
         // 5. If event is not an ASCII case-insensitive match for either the string "onload" or the string "onload()", then return.
-        if (!event.equals_ignoring_case("onload"sv) && !event.equals_ignoring_case("onload()"sv)) {
+        if (!Infra::is_ascii_case_insensitive_match(event, "onload"sv)
+            && !Infra::is_ascii_case_insensitive_match(event, "onload()"sv)) {
             dbgln("HTMLScriptElement: Refusing to run classic script because the provided 'event' attribute is not equal to 'onload' or 'onload()'");
             return;
         }

Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp

@@ -8,6 +8,7 @@
 #include <LibWeb/CSS/Parser/Parser.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/HTML/HTMLStyleElement.h>
+#include <LibWeb/Infra/Strings.h>
 
 namespace Web::HTML {
 
@@ -131,7 +132,7 @@ void HTMLStyleElement::update_a_style_block()
 
     // 4. If element's type attribute is present and its value is neither the empty string nor an ASCII case-insensitive match for "text/css", then return.
     auto type_attribute = attribute(HTML::AttributeNames::type);
-    if (!type_attribute.is_null() && !type_attribute.is_empty() && !type_attribute.equals_ignoring_case("text/css"sv))
+    if (!type_attribute.is_null() && !type_attribute.is_empty() && !Infra::is_ascii_case_insensitive_match(type_attribute, "text/css"sv))
         return;
 
     // FIXME: 5. If the Should element's inline behavior be blocked by Content Security Policy? algorithm returns "Blocked" when executed upon the style element, "style", and the style element's child text content, then return. [CSP]