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/*
* 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.contacts.common.util;
import android.content.Context;
import android.telephony.PhoneNumberUtils;
import android.text.TextUtils;
import android.util.Log;
import com.google.i18n.phonenumbers.NumberParseException;
import com.google.i18n.phonenumbers.PhoneNumberUtil;
import com.google.i18n.phonenumbers.Phonenumber.PhoneNumber;
import com.google.i18n.phonenumbers.ShortNumberInfo;
import java.util.Locale;
/**
* This class wraps several PhoneNumberUtil calls and TelephonyManager calls. Some of them are
* the same as the ones in the framework's code base. We can remove those once they are part of
* the public API.
*/
public class PhoneNumberHelper {
private static final String LOG_TAG = PhoneNumberHelper.class.getSimpleName();
/**
* Returns whether a number is an emergency number given the location.
* @param number Phone number
* @param context Application context
* @return True if the number is an emergency number in the location. False otherwise
*
* Differences introduced due to unbundling:
*
* ecclist property is set by the Android Radio Interface Library to contain a list of valid
* Emergency call codes (See {@link PhoneNumberUtils.isEmergencyNumber(String)}).
* Before if the ecclist property is not empty but does not contain the
* number, the number will be immediately considered as not an emergency number. However, after
* unbundling and formatting like this, if the number is not listed in the *non-empty* ecclist
* property, we still check it with libphonenumber to see whether they think this is an
* emergency number.
*
* TODO: Remove if PhoneNumberUtils.isLocalEmergencyNumber(String number, Context context)
* is made public.
*/
public static boolean isLocalEmergencyNumber(String number, Context context) {
if (number == null) {
return false;
}
final Locale locale = context.getResources().getConfiguration().locale;
String countryIso = TelephonyManagerUtils.getCurrentCountryIso(context, locale);
if (PhoneNumberUtils.isEmergencyNumber(number)) {
// If the number is listed in system properties, return true
return true;
}
// No ecclist system property, or the ecclist system property does not contain the
// number, so use our own list.
if (countryIso == null) {
return ("112".equals(number) || "911".equals(number));
} else {
ShortNumberInfo util = ShortNumberInfo.getInstance();
return util.isEmergencyNumber(number, countryIso);
}
}
/**
* Determines if the specified number is actually a URI (i.e. a SIP address) rather than a
* regular PSTN phone number, based on whether or not the number contains an "@" character.
*
* @param number Phone number
* @return true if number contains @
*
* TODO: Remove if PhoneNumberUtils.isUriNumber(String number) is made public.
*/
public static boolean isUriNumber(String number) {
// Note we allow either "@" or "%40" to indicate a URI, in case
// the passed-in string is URI-escaped. (Neither "@" nor "%40"
// will ever be found in a legal PSTN number.)
return number != null && (number.contains("@") || number.contains("%40"));
}
/**
* Formats the phone number only if the given number hasn't been formatted.
* <p>
* The number which has only dailable character is treated as not being
* formatted.
*
* @param phoneNumber the number to be formatted.
* @param phoneNumberE164 The E164 format number whose country code is used if the given
* phoneNumber doesn't have the country code.
* @param defaultCountryIso The ISO 3166-1 two letters country code whose convention will
* be used if the phoneNumberE164 is null or invalid, or if phoneNumber contains IDD.
* @return The formatted number if the given number has been formatted, otherwise, return the
* given number.
*
* TODO: Remove if PhoneNumberUtils.formatNumber(String phoneNumber, String phoneNumberE164,
* String defaultCountryIso) is made public.
*/
public static String formatNumber(
String phoneNumber, String phoneNumberE164, String defaultCountryIso) {
int len = phoneNumber.length();
for (int i = 0; i < len; i++) {
if (!PhoneNumberUtils.isDialable(phoneNumber.charAt(i))) {
return phoneNumber;
}
}
PhoneNumberUtil util = PhoneNumberUtil.getInstance();
// Get the country code from phoneNumberE164
if (phoneNumberE164 != null && phoneNumberE164.length() >= 2
&& phoneNumberE164.charAt(0) == '+') {
try {
// The number to be parsed is in E164 format, so the default region used doesn't
// matter.
PhoneNumber pn = util.parse(phoneNumberE164, "ZZ");
String regionCode = util.getRegionCodeForNumber(pn);
if (!TextUtils.isEmpty(regionCode) &&
// This makes sure phoneNumber doesn't contain an IDD
normalizeNumber(phoneNumber).indexOf(phoneNumberE164.substring(1)) <= 0) {
defaultCountryIso = regionCode;
}
} catch (NumberParseException e) {
Log.w(LOG_TAG, "The number could not be parsed in E164 format!");
}
}
String result = formatNumber(phoneNumber, defaultCountryIso);
return result == null ? phoneNumber : result;
}
/**
* Format a phone number.
* <p>
* If the given number doesn't have the country code, the phone will be
* formatted to the default country's convention.
*
* @param phoneNumber The number to be formatted.
* @param defaultCountryIso The ISO 3166-1 two letters country code whose convention will
* be used if the given number doesn't have the country code.
* @return The formatted number, or null if the given number is not valid.
*
* TODO: Remove if PhoneNumberUtils.formatNumber(String phoneNumber, String defaultCountryIso)
* is made public.
*/
public static String formatNumber(String phoneNumber, String defaultCountryIso) {
// Do not attempt to format numbers that start with a hash or star symbol.
if (phoneNumber.startsWith("#") || phoneNumber.startsWith("*")) {
return phoneNumber;
}
final PhoneNumberUtil util = PhoneNumberUtil.getInstance();
String result = null;
try {
PhoneNumber pn = util.parseAndKeepRawInput(phoneNumber, defaultCountryIso);
result = util.formatInOriginalFormat(pn, defaultCountryIso);
} catch (NumberParseException e) {
Log.w(LOG_TAG, "Number could not be parsed with the given country code!");
}
return result;
}
/**
* Normalize a phone number by removing the characters other than digits. If
* the given number has keypad letters, the letters will be converted to
* digits first.
*
* @param phoneNumber The number to be normalized.
* @return The normalized number.
*
* TODO: Remove if PhoneNumberUtils.normalizeNumber(String phoneNumber) is made public.
*/
public static String normalizeNumber(String phoneNumber) {
StringBuilder sb = new StringBuilder();
int len = phoneNumber.length();
for (int i = 0; i < len; i++) {
char c = phoneNumber.charAt(i);
// Character.digit() supports ASCII and Unicode digits (fullwidth, Arabic-Indic, etc.)
int digit = Character.digit(c, 10);
if (digit != -1) {
sb.append(digit);
} else if (i == 0 && c == '+') {
sb.append(c);
} else if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
return normalizeNumber(PhoneNumberUtils.convertKeypadLettersToDigits(phoneNumber));
}
}
return sb.toString();
}
/**
* @return the "username" part of the specified SIP address, i.e. the part before the "@"
* character (or "%40").
*
* @param number SIP address of the form "username@domainname" (or the URI-escaped equivalent
* "username%40domainname")
*
* TODO: Remove if PhoneNumberUtils.getUsernameFromUriNumber(String number) is made public.
*/
public static String getUsernameFromUriNumber(String number) {
// The delimiter between username and domain name can be
// either "@" or "%40" (the URI-escaped equivalent.)
int delimiterIndex = number.indexOf('@');
if (delimiterIndex < 0) {
delimiterIndex = number.indexOf("%40");
}
if (delimiterIndex < 0) {
Log.w(LOG_TAG,
"getUsernameFromUriNumber: no delimiter found in SIP addr '" + number + "'");
return number;
}
return number.substring(0, delimiterIndex);
}
}
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