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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.mms.service;
     18 
     19 import android.telephony.TelephonyManager;
     20 import android.text.TextUtils;
     21 import android.util.Log;
     22 import com.android.i18n.phonenumbers.NumberParseException;
     23 import com.android.i18n.phonenumbers.PhoneNumberUtil;
     24 import com.android.i18n.phonenumbers.Phonenumber;
     25 
     26 import java.util.Locale;
     27 
     28 /**
     29  * Utility to handle phone numbers.
     30  */
     31 public class PhoneUtils {
     32 
     33     /**
     34      * Get a canonical national format phone number. If parsing fails, just return the
     35      * original number.
     36      *
     37      * @param telephonyManager
     38      * @param subId The SIM ID associated with this number
     39      * @param phoneText The input phone number text
     40      * @return The formatted number or the original phone number if failed to parse
     41      */
     42     public static String getNationalNumber(TelephonyManager telephonyManager, int subId,
     43             String phoneText) {
     44         final String country = getSimOrDefaultLocaleCountry(telephonyManager, subId);
     45         final PhoneNumberUtil phoneNumberUtil = PhoneNumberUtil.getInstance();
     46         final Phonenumber.PhoneNumber parsed = getParsedNumber(phoneNumberUtil, phoneText, country);
     47         if (parsed == null) {
     48             return phoneText;
     49         }
     50         return phoneNumberUtil
     51                 .format(parsed, PhoneNumberUtil.PhoneNumberFormat.NATIONAL)
     52                 .replaceAll("\\D", "");
     53     }
     54 
     55     // Parse the input number into internal format
     56     private static Phonenumber.PhoneNumber getParsedNumber(PhoneNumberUtil phoneNumberUtil,
     57             String phoneText, String country) {
     58         try {
     59             final Phonenumber.PhoneNumber phoneNumber = phoneNumberUtil.parse(phoneText, country);
     60             if (phoneNumberUtil.isValidNumber(phoneNumber)) {
     61                 return phoneNumber;
     62             } else {
     63                 LogUtil.e("getParsedNumber: not a valid phone number"
     64                         + " for country " + country);
     65                 return null;
     66             }
     67         } catch (final NumberParseException e) {
     68             LogUtil.e("getParsedNumber: Not able to parse phone number", e);
     69             return null;
     70         }
     71     }
     72 
     73     // Get the country/region either from the SIM ID or from locale
     74     private static String getSimOrDefaultLocaleCountry(TelephonyManager telephonyManager,
     75             int subId) {
     76         String country = getSimCountry(telephonyManager, subId);
     77         if (TextUtils.isEmpty(country)) {
     78             country = Locale.getDefault().getCountry();
     79         }
     80 
     81         return country;
     82     }
     83 
     84     // Get country/region from SIM ID
     85     private static String getSimCountry(TelephonyManager telephonyManager, int subId) {
     86         final String country = telephonyManager.getSimCountryIso(subId);
     87         if (TextUtils.isEmpty(country)) {
     88             return null;
     89         }
     90         return country.toUpperCase();
     91     }
     92 }
     93