core: Add WStr::eq_with_case

wstr/src/common.rs

@@ -289,6 +289,21 @@ impl WStr {
         super::ops::str_eq_ignore_case(self, other)
     }
 
+    #[inline]
+    /// Compares two strings with the specified case sensitivity.
+    /// Note that the case mapping is different than Rust's case mapping.
+    pub fn eq_with_case<'a>(
+        &self,
+        other: impl Into<Units<&'a [u8], &'a [u16]>>,
+        case_sensitive: bool,
+    ) -> bool {
+        if case_sensitive {
+            self == WStr::from_units(other.into())
+        } else {
+            self.eq_ignore_case(WStr::from_units(other.into()))
+        }
+    }
+
     #[inline]
     /// Compares two strings, ignoring case as done by the Flash Player.
     /// Note that the case mapping is different than Rust's case mapping.