Fix for UTF8 character counting in class names

scinfu · Feb 28, 2025 · 9da071d · 9da071d
1 parent 18ad8b8
commit 9da071d
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/Sources/Element.swift b/Sources/Element.swift
@@ -1158,7 +1158,7 @@ open class Element: Node {
         var inClass: Bool = false
         var start: Int = 0
         for i in 0..<len {
-            if (classAttr.charAt(i).isWhitespace) {
+            if (classAttr.utf8CharAt(i).isWhitespace) {
                 if (inClass) {
                     // white space ends a class name, compare it with the requested one, ignore case
                     if (i - start == wantLen && classAttr.regionMatches(ignoreCase: true, selfOffset: start,

diff --git a/Sources/String.swift b/Sources/String.swift
@@ -282,6 +282,10 @@ extension String {
         return self[i] as Character
     }
 
+    func utf8CharAt(_ i: Int) -> UTF8Char {
+      return self.utf8Array[i]
+    }
+
 	func substring(_ beginIndex: Int) -> String {
         return String.split(self, beginIndex, self.count-beginIndex)
     }