1 files changed, 35 insertions, 0 deletions
diff --git a/java/com/android/dialer/enrichedcall/FuzzyPhoneNumberMatcher.java b/java/com/android/dialer/enrichedcall/FuzzyPhoneNumberMatcher.java
new file mode 100644
index 000000000..250c64313
--- /dev/null
+++ b/java/com/android/dialer/enrichedcall/FuzzyPhoneNumberMatcher.java
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.dialer.enrichedcall;
+
+import android.support.annotation.NonNull;
+import com.android.dialer.common.Assert;
+
+/** Utility for comparing phone numbers. */
+public class FuzzyPhoneNumberMatcher {
+
+  /** Returns {@code true} if the given numbers can be interpreted to be the same. */
+  public static boolean matches(@NonNull String a, @NonNull String b) {
+    String aNormalized = Assert.isNotNull(a).replaceAll("[^0-9]", "");
+    String bNormalized = Assert.isNotNull(b).replaceAll("[^0-9]", "");
+    if (aNormalized.length() < 7 || bNormalized.length() < 7) {
+      return false;
+    }
+    String aMatchable = aNormalized.substring(aNormalized.length() - 7);
+    String bMatchable = bNormalized.substring(bNormalized.length() - 7);
+    return aMatchable.equals(bMatchable);
+  }
+}