Better stringbuilder comparison

app/src/main/java/acr/browser/lightning/app/AppComponent.java

@@ -1,7 +1,5 @@
 package acr.browser.lightning.app;
 
-import android.support.annotation.NonNull;
-
 import javax.inject.Singleton;
 
 import acr.browser.lightning.activity.BrowserActivity;
@@ -23,7 +21,6 @@ import acr.browser.lightning.fragment.LightningPreferenceFragment;
 import acr.browser.lightning.fragment.PrivacySettingsFragment;
 import acr.browser.lightning.fragment.TabsFragment;
 import acr.browser.lightning.search.SuggestionsAdapter;
-import acr.browser.lightning.utils.AdBlock;
 import acr.browser.lightning.utils.ProxyUtils;
 import acr.browser.lightning.view.LightningChromeClient;
 import acr.browser.lightning.view.LightningView;

app/src/main/java/acr/browser/lightning/utils/StringBuilderUtils.java

@@ -93,8 +93,19 @@ public class StringBuilderUtils {
      * the string builder is equal to the string.
      */
     public static boolean equals(@NonNull StringBuilder stringBuilder, @NonNull String equal) {
-        int index = stringBuilder.indexOf(equal);
-        return index >= 0 && stringBuilder.length() == equal.length();
+
+        int builderLength = stringBuilder.length();
+        if (builderLength != equal.length()) {
+            return false;
+        }
+
+        for (int n = 0; n < builderLength; n++) {
+            if (stringBuilder.charAt(n) != equal.charAt(n)) {
+                return false;
+            }
+        }
+
+        return true;
     }
 
     /**