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
17package com.android.mms.service;
18
19import android.telephony.TelephonyManager;
20import android.text.TextUtils;
21import android.util.Log;
22import com.android.i18n.phonenumbers.NumberParseException;
23import com.android.i18n.phonenumbers.PhoneNumberUtil;
24import com.android.i18n.phonenumbers.Phonenumber;
25
26import java.util.Locale;
27
28/**
29 * Utility to handle phone numbers.
30 */
31public 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