Match attribute values in a case-insensitive manner.

src/Translator.php

@@ -197,6 +197,8 @@ protected function convertSingleSelector(string $css):string {
  $hasElement = true;
  }
 
+ $currentThreadItem['content'] = strtolower($currentThreadItem['content']);
+
  /** @var null|array<int, array<string, string>> $detail */
  $detail = $currentThreadItem["detail"] ?? null;
  $detailType = $detail[0] ?? null;

test/phpunit/TranslatorTest.php

@@ -173,6 +173,47 @@ public function testAttribute() {
  );
  }
 
+ public function testCaseSensitivity() {
+ $document = new DOMDocument("1.0", "UTF-8");
+ $document->loadHTML("<div data-FOO='bar'>baz</div>");
+
+ $xpath = new DOMXPath($document);
+
+
+ $attributeNameIsCaseInsensitive = new Translator(
+ "[data-FOO='bar']"
+ );
+ self::assertEquals(
+ 1,
+ $xpath->query($attributeNameIsCaseInsensitive)->length
+ );
+
+ $attributeNameCaseInsensitive = new Translator(
+ "[data-foo='bar']"
+ );
+ self::assertEquals(
+ 1,
+ $xpath->query($attributeNameCaseInsensitive)->length
+ );
+
+ $attributeValueCaseSensitive = new Translator(
+ "[data-foo='bar']"
+ );
+ self::assertEquals(
+ 1,
+ $xpath->query($attributeValueCaseSensitive)->length
+ );
+
+ $attributeValueCaseSensitive = new Translator(
+ "[data-foo='BAR']"
+ );
+ self::assertEquals(
+ 0,
+ $xpath->query($attributeValueCaseSensitive)->length
+ );
+
+ }
+
  public function testAttributeStarSelector() {
  $document = new DOMDocument("1.0", "UTF-8");
  $document->loadHTML(Helper::HTML_COMPLEX);