Move MoreStrings from services.telephony.common

Remove telephony libraries from build file.

Bug:
Change-Id: Ibf811cb52efea9f7ad44550e31d723249ad763f2

1 files changed, 43 insertions, 0 deletions

diff --git a/src/com/android/dialer/util/MoreStrings.java b/src/com/android/dialer/util/MoreStrings.java
new file mode 100644
index 000000000..68956f25c
--- /dev/null
+++ b/src/com/android/dialer/util/MoreStrings.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2013 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.util;
+
+/**
+ * Static utility methods for Strings.
+ */
+public class MoreStrings {
+
+    public static String toSafeString(String value) {
+        if (value == null) {
+            return null;
+        }
+
+        // Do exactly same thing as Uri#toSafeString() does, which will enable us to compare
+        // sanitized phone numbers.
+        final StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < value.length(); i++) {
+            final char c = value.charAt(i);
+            if (c == '-' || c == '@' || c == '.') {
+                builder.append(c);
+            } else {
+                builder.append('x');
+            }
+        }
+        return builder.toString();
+    }
+
+}