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android_frameworks_base/telephony/java/android/telephony/PhoneNumberUtils.java
Yorke Lee 99d1699516 PhoneNumberUtils API changes 
Unhide the following methods:
PhoneNumberFormattingTextWatcher(String countryCode)
formatNumber(String phoneNumber, String defaultCountryIso)
formatNumber(String phoneNumber, String phoneNumberE164, String defaultCountryISO)
formatNumberToE164(String phoneNumber, String defaultCountryIso)
(The previous 3 formatting methods use an instance of PhoneNumberUtil to do the formatting)
isLocalEmergencyNumber(String number, Context context)
isVoicemailNumber(String number)
replaceUnicodeDigits(String number)
normalizeNumber(String phoneNumber)

Deprecate the following methods. These formatting-related methods don't use
PhoneNumberUtil to perform the formatting, and so are considered broken:
formatNumber(String source)
formatNumber(String source, int defaultFormattingType)
getFormatTypeForLocale(Locale locale)
formatNumber(Editable text, int defaultFormattingType)
formatNanpNumber(Editable text)
formatJapaneseNumber(Editable text)

Change-Id: Ibf854092b7db05f7e3e9401cc909c9f1ed4997b0
2013-12-02 13:06:30 -08:00

2563 lines
92 KiB
Java
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/*
* Copyright (C) 2006 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 android.telephony;
import com.android.i18n.phonenumbers.NumberParseException;
import com.android.i18n.phonenumbers.PhoneNumberUtil;
import com.android.i18n.phonenumbers.PhoneNumberUtil.PhoneNumberFormat;
import com.android.i18n.phonenumbers.Phonenumber.PhoneNumber;
import com.android.i18n.phonenumbers.ShortNumberUtil;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.location.CountryDetector;
import android.net.Uri;
import android.os.SystemProperties;
import android.provider.Contacts;
import android.provider.ContactsContract;
import android.text.Editable;
import android.text.SpannableStringBuilder;
import android.text.TextUtils;
import android.telephony.Rlog;
import android.util.SparseIntArray;
import static com.android.internal.telephony.TelephonyProperties.PROPERTY_ICC_OPERATOR_ISO_COUNTRY;
import static com.android.internal.telephony.TelephonyProperties.PROPERTY_IDP_STRING;
import static com.android.internal.telephony.TelephonyProperties.PROPERTY_OPERATOR_ISO_COUNTRY;
import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Various utilities for dealing with phone number strings.
*/
public class PhoneNumberUtils
{
/*
* Special characters
*
* (See "What is a phone number?" doc)
* 'p' --- GSM pause character, same as comma
* 'n' --- GSM wild character
* 'w' --- GSM wait character
*/
public static final char PAUSE = ',';
public static final char WAIT = ';';
public static final char WILD = 'N';
/*
* Calling Line Identification Restriction (CLIR)
*/
private static final String CLIR_ON = "*31#";
private static final String CLIR_OFF = "#31#";
/*
* TOA = TON + NPI
* See TS 24.008 section 10.5.4.7 for details.
* These are the only really useful TOA values
*/
public static final int TOA_International = 0x91;
public static final int TOA_Unknown = 0x81;
static final String LOG_TAG = "PhoneNumberUtils";
private static final boolean DBG = false;
/*
* global-phone-number = ["+"] 1*( DIGIT / written-sep )
* written-sep = ("-"/".")
*/
private static final Pattern GLOBAL_PHONE_NUMBER_PATTERN =
Pattern.compile("[\\+]?[0-9.-]+");
/** True if c is ISO-LATIN characters 0-9 */
public static boolean
isISODigit (char c) {
return c >= '0' && c <= '9';
}
/** True if c is ISO-LATIN characters 0-9, *, # */
public final static boolean
is12Key(char c) {
return (c >= '0' && c <= '9') || c == '*' || c == '#';
}
/** True if c is ISO-LATIN characters 0-9, *, # , +, WILD */
public final static boolean
isDialable(char c) {
return (c >= '0' && c <= '9') || c == '*' || c == '#' || c == '+' || c == WILD;
}
/** True if c is ISO-LATIN characters 0-9, *, # , + (no WILD) */
public final static boolean
isReallyDialable(char c) {
return (c >= '0' && c <= '9') || c == '*' || c == '#' || c == '+';
}
/** True if c is ISO-LATIN characters 0-9, *, # , +, WILD, WAIT, PAUSE */
public final static boolean
isNonSeparator(char c) {
return (c >= '0' && c <= '9') || c == '*' || c == '#' || c == '+'
|| c == WILD || c == WAIT || c == PAUSE;
}
/** This any anything to the right of this char is part of the
* post-dial string (eg this is PAUSE or WAIT)
*/
public final static boolean
isStartsPostDial (char c) {
return c == PAUSE || c == WAIT;
}
private static boolean
isPause (char c){
return c == 'p'||c == 'P';
}
private static boolean
isToneWait (char c){
return c == 'w'||c == 'W';
}
/** Returns true if ch is not dialable or alpha char */
private static boolean isSeparator(char ch) {
return !isDialable(ch) && !(('a' <= ch && ch <= 'z') || ('A' <= ch && ch <= 'Z'));
}
/** Extracts the phone number from an Intent.
*
* @param intent the intent to get the number of
* @param context a context to use for database access
*
* @return the phone number that would be called by the intent, or
* <code>null</code> if the number cannot be found.
*/
public static String getNumberFromIntent(Intent intent, Context context) {
String number = null;
Uri uri = intent.getData();
if (uri == null) {
return null;
}
String scheme = uri.getScheme();
if (scheme.equals("tel") || scheme.equals("sip")) {
return uri.getSchemeSpecificPart();
}
// TODO: We don't check for SecurityException here (requires
// CALL_PRIVILEGED permission).
if (scheme.equals("voicemail")) {
return TelephonyManager.getDefault().getCompleteVoiceMailNumber();
}
if (context == null) {
return null;
}
String type = intent.resolveType(context);
String phoneColumn = null;
// Correctly read out the phone entry based on requested provider
final String authority = uri.getAuthority();
if (Contacts.AUTHORITY.equals(authority)) {
phoneColumn = Contacts.People.Phones.NUMBER;
} else if (ContactsContract.AUTHORITY.equals(authority)) {
phoneColumn = ContactsContract.CommonDataKinds.Phone.NUMBER;
}
final Cursor c = context.getContentResolver().query(uri, new String[] {
phoneColumn
}, null, null, null);
if (c != null) {
try {
if (c.moveToFirst()) {
number = c.getString(c.getColumnIndex(phoneColumn));
}
} finally {
c.close();
}
}
return number;
}
/** Extracts the network address portion and canonicalizes
* (filters out separators.)
* Network address portion is everything up to DTMF control digit
* separators (pause or wait), but without non-dialable characters.
*
* Please note that the GSM wild character is allowed in the result.
* This must be resolved before dialing.
*
* Returns null if phoneNumber == null
*/
public static String
extractNetworkPortion(String phoneNumber) {
if (phoneNumber == null) {
return null;
}
int len = phoneNumber.length();
StringBuilder ret = new StringBuilder(len);
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) {
ret.append(digit);
} else if (c == '+') {
// Allow '+' as first character or after CLIR MMI prefix
String prefix = ret.toString();
if (prefix.length() == 0 || prefix.equals(CLIR_ON) || prefix.equals(CLIR_OFF)) {
ret.append(c);
}
} else if (isDialable(c)) {
ret.append(c);
} else if (isStartsPostDial (c)) {
break;
}
}
return ret.toString();
}
/**
* Extracts the network address portion and canonicalize.
*
* This function is equivalent to extractNetworkPortion(), except
* for allowing the PLUS character to occur at arbitrary positions
* in the address portion, not just the first position.
*
* @hide
*/
public static String extractNetworkPortionAlt(String phoneNumber) {
if (phoneNumber == null) {
return null;
}
int len = phoneNumber.length();
StringBuilder ret = new StringBuilder(len);
boolean haveSeenPlus = false;
for (int i = 0; i < len; i++) {
char c = phoneNumber.charAt(i);
if (c == '+') {
if (haveSeenPlus) {
continue;
}
haveSeenPlus = true;
}
if (isDialable(c)) {
ret.append(c);
} else if (isStartsPostDial (c)) {
break;
}
}
return ret.toString();
}
/**
* Strips separators from a phone number string.
* @param phoneNumber phone number to strip.
* @return phone string stripped of separators.
*/
public static String stripSeparators(String phoneNumber) {
if (phoneNumber == null) {
return null;
}
int len = phoneNumber.length();
StringBuilder ret = new StringBuilder(len);
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) {
ret.append(digit);
} else if (isNonSeparator(c)) {
ret.append(c);
}
}
return ret.toString();
}
/**
* Translates keypad letters to actual digits (e.g. 1-800-GOOG-411 will
* become 1-800-4664-411), and then strips all separators (e.g. 1-800-4664-411 will become
* 18004664411).
*
* @see #convertKeypadLettersToDigits(String)
* @see #stripSeparators(String)
*
* @hide
*/
public static String convertAndStrip(String phoneNumber) {
return stripSeparators(convertKeypadLettersToDigits(phoneNumber));
}
/**
* Converts pause and tonewait pause characters
* to Android representation.
* RFC 3601 says pause is 'p' and tonewait is 'w'.
* @hide
*/
public static String convertPreDial(String phoneNumber) {
if (phoneNumber == null) {
return null;
}
int len = phoneNumber.length();
StringBuilder ret = new StringBuilder(len);
for (int i = 0; i < len; i++) {
char c = phoneNumber.charAt(i);
if (isPause(c)) {
c = PAUSE;
} else if (isToneWait(c)) {
c = WAIT;
}
ret.append(c);
}
return ret.toString();
}
/** or -1 if both are negative */
static private int
minPositive (int a, int b) {
if (a >= 0 && b >= 0) {
return (a < b) ? a : b;
} else if (a >= 0) { /* && b < 0 */
return a;
} else if (b >= 0) { /* && a < 0 */
return b;
} else { /* a < 0 && b < 0 */
return -1;
}
}
private static void log(String msg) {
Rlog.d(LOG_TAG, msg);
}
/** index of the last character of the network portion
* (eg anything after is a post-dial string)
*/
static private int
indexOfLastNetworkChar(String a) {
int pIndex, wIndex;
int origLength;
int trimIndex;
origLength = a.length();
pIndex = a.indexOf(PAUSE);
wIndex = a.indexOf(WAIT);
trimIndex = minPositive(pIndex, wIndex);
if (trimIndex < 0) {
return origLength - 1;
} else {
return trimIndex - 1;
}
}
/**
* Extracts the post-dial sequence of DTMF control digits, pauses, and
* waits. Strips separators. This string may be empty, but will not be null
* unless phoneNumber == null.
*
* Returns null if phoneNumber == null
*/
public static String
extractPostDialPortion(String phoneNumber) {
if (phoneNumber == null) return null;
int trimIndex;
StringBuilder ret = new StringBuilder();
trimIndex = indexOfLastNetworkChar (phoneNumber);
for (int i = trimIndex + 1, s = phoneNumber.length()
; i < s; i++
) {
char c = phoneNumber.charAt(i);
if (isNonSeparator(c)) {
ret.append(c);
}
}
return ret.toString();
}
/**
* Compare phone numbers a and b, return true if they're identical enough for caller ID purposes.
*/
public static boolean compare(String a, String b) {
// We've used loose comparation at least Eclair, which may change in the future.
return compare(a, b, false);
}
/**
* Compare phone numbers a and b, and return true if they're identical
* enough for caller ID purposes. Checks a resource to determine whether
* to use a strict or loose comparison algorithm.
*/
public static boolean compare(Context context, String a, String b) {
boolean useStrict = context.getResources().getBoolean(
com.android.internal.R.bool.config_use_strict_phone_number_comparation);
return compare(a, b, useStrict);
}
/**
* @hide only for testing.
*/
public static boolean compare(String a, String b, boolean useStrictComparation) {
return (useStrictComparation ? compareStrictly(a, b) : compareLoosely(a, b));
}
/**
* Compare phone numbers a and b, return true if they're identical
* enough for caller ID purposes.
*
* - Compares from right to left
* - requires MIN_MATCH (7) characters to match
* - handles common trunk prefixes and international prefixes
* (basically, everything except the Russian trunk prefix)
*
* Note that this method does not return false even when the two phone numbers
* are not exactly same; rather; we can call this method "similar()", not "equals()".
*
* @hide
*/
public static boolean
compareLoosely(String a, String b) {
int ia, ib;
int matched;
int numNonDialableCharsInA = 0;
int numNonDialableCharsInB = 0;
if (a == null || b == null) return a == b;
if (a.length() == 0 || b.length() == 0) {
return false;
}
ia = indexOfLastNetworkChar (a);
ib = indexOfLastNetworkChar (b);
matched = 0;
while (ia >= 0 && ib >=0) {
char ca, cb;
boolean skipCmp = false;
ca = a.charAt(ia);
if (!isDialable(ca)) {
ia--;
skipCmp = true;
numNonDialableCharsInA++;
}
cb = b.charAt(ib);
if (!isDialable(cb)) {
ib--;
skipCmp = true;
numNonDialableCharsInB++;
}
if (!skipCmp) {
if (cb != ca && ca != WILD && cb != WILD) {
break;
}
ia--; ib--; matched++;
}
}
if (matched < MIN_MATCH) {
int effectiveALen = a.length() - numNonDialableCharsInA;
int effectiveBLen = b.length() - numNonDialableCharsInB;
// if the number of dialable chars in a and b match, but the matched chars < MIN_MATCH,
// treat them as equal (i.e. 404-04 and 40404)
if (effectiveALen == effectiveBLen && effectiveALen == matched) {
return true;
}
return false;
}
// At least one string has matched completely;
if (matched >= MIN_MATCH && (ia < 0 || ib < 0)) {
return true;
}
/*
* Now, what remains must be one of the following for a
* match:
*
* - a '+' on one and a '00' or a '011' on the other
* - a '0' on one and a (+,00)<country code> on the other
* (for this, a '0' and a '00' prefix would have succeeded above)
*/
if (matchIntlPrefix(a, ia + 1)
&& matchIntlPrefix (b, ib +1)
) {
return true;
}
if (matchTrunkPrefix(a, ia + 1)
&& matchIntlPrefixAndCC(b, ib +1)
) {
return true;
}
if (matchTrunkPrefix(b, ib + 1)
&& matchIntlPrefixAndCC(a, ia +1)
) {
return true;
}
return false;
}
/**
* @hide
*/
public static boolean
compareStrictly(String a, String b) {
return compareStrictly(a, b, true);
}
/**
* @hide
*/
public static boolean
compareStrictly(String a, String b, boolean acceptInvalidCCCPrefix) {
if (a == null || b == null) {
return a == b;
} else if (a.length() == 0 && b.length() == 0) {
return false;
}
int forwardIndexA = 0;
int forwardIndexB = 0;
CountryCallingCodeAndNewIndex cccA =
tryGetCountryCallingCodeAndNewIndex(a, acceptInvalidCCCPrefix);
CountryCallingCodeAndNewIndex cccB =
tryGetCountryCallingCodeAndNewIndex(b, acceptInvalidCCCPrefix);
boolean bothHasCountryCallingCode = false;
boolean okToIgnorePrefix = true;
boolean trunkPrefixIsOmittedA = false;
boolean trunkPrefixIsOmittedB = false;
if (cccA != null && cccB != null) {
if (cccA.countryCallingCode != cccB.countryCallingCode) {
// Different Country Calling Code. Must be different phone number.
return false;
}
// When both have ccc, do not ignore trunk prefix. Without this,
// "+81123123" becomes same as "+810123123" (+81 == Japan)
okToIgnorePrefix = false;
bothHasCountryCallingCode = true;
forwardIndexA = cccA.newIndex;
forwardIndexB = cccB.newIndex;
} else if (cccA == null && cccB == null) {
// When both do not have ccc, do not ignore trunk prefix. Without this,
// "123123" becomes same as "0123123"
okToIgnorePrefix = false;
} else {
if (cccA != null) {
forwardIndexA = cccA.newIndex;
} else {
int tmp = tryGetTrunkPrefixOmittedIndex(b, 0);
if (tmp >= 0) {
forwardIndexA = tmp;
trunkPrefixIsOmittedA = true;
}
}
if (cccB != null) {
forwardIndexB = cccB.newIndex;
} else {
int tmp = tryGetTrunkPrefixOmittedIndex(b, 0);
if (tmp >= 0) {
forwardIndexB = tmp;
trunkPrefixIsOmittedB = true;
}
}
}
int backwardIndexA = a.length() - 1;
int backwardIndexB = b.length() - 1;
while (backwardIndexA >= forwardIndexA && backwardIndexB >= forwardIndexB) {
boolean skip_compare = false;
final char chA = a.charAt(backwardIndexA);
final char chB = b.charAt(backwardIndexB);
if (isSeparator(chA)) {
backwardIndexA--;
skip_compare = true;
}
if (isSeparator(chB)) {
backwardIndexB--;
skip_compare = true;
}
if (!skip_compare) {
if (chA != chB) {
return false;
}
backwardIndexA--;
backwardIndexB--;
}
}
if (okToIgnorePrefix) {
if ((trunkPrefixIsOmittedA && forwardIndexA <= backwardIndexA) ||
!checkPrefixIsIgnorable(a, forwardIndexA, backwardIndexA)) {
if (acceptInvalidCCCPrefix) {
// Maybe the code handling the special case for Thailand makes the
// result garbled, so disable the code and try again.
// e.g. "16610001234" must equal to "6610001234", but with
// Thailand-case handling code, they become equal to each other.
//
// Note: we select simplicity rather than adding some complicated
// logic here for performance(like "checking whether remaining
// numbers are just 66 or not"), assuming inputs are small
// enough.
return compare(a, b, false);
} else {
return false;
}
}
if ((trunkPrefixIsOmittedB && forwardIndexB <= backwardIndexB) ||
!checkPrefixIsIgnorable(b, forwardIndexA, backwardIndexB)) {
if (acceptInvalidCCCPrefix) {
return compare(a, b, false);
} else {
return false;
}
}
} else {
// In the US, 1-650-555-1234 must be equal to 650-555-1234,
// while 090-1234-1234 must not be equal to 90-1234-1234 in Japan.
// This request exists just in US (with 1 trunk (NDD) prefix).
// In addition, "011 11 7005554141" must not equal to "+17005554141",
// while "011 1 7005554141" must equal to "+17005554141"
//
// In this comparison, we ignore the prefix '1' just once, when
// - at least either does not have CCC, or
// - the remaining non-separator number is 1
boolean maybeNamp = !bothHasCountryCallingCode;
while (backwardIndexA >= forwardIndexA) {
final char chA = a.charAt(backwardIndexA);
if (isDialable(chA)) {
if (maybeNamp && tryGetISODigit(chA) == 1) {
maybeNamp = false;
} else {
return false;
}
}
backwardIndexA--;
}
while (backwardIndexB >= forwardIndexB) {
final char chB = b.charAt(backwardIndexB);
if (isDialable(chB)) {
if (maybeNamp && tryGetISODigit(chB) == 1) {
maybeNamp = false;
} else {
return false;
}
}
backwardIndexB--;
}
}
return true;
}
/**
* Returns the rightmost MIN_MATCH (5) characters in the network portion
* in *reversed* order
*
* This can be used to do a database lookup against the column
* that stores getStrippedReversed()
*
* Returns null if phoneNumber == null
*/
public static String
toCallerIDMinMatch(String phoneNumber) {
String np = extractNetworkPortionAlt(phoneNumber);
return internalGetStrippedReversed(np, MIN_MATCH);
}
/**
* Returns the network portion reversed.
* This string is intended to go into an index column for a
* database lookup.
*
* Returns null if phoneNumber == null
*/
public static String
getStrippedReversed(String phoneNumber) {
String np = extractNetworkPortionAlt(phoneNumber);
if (np == null) return null;
return internalGetStrippedReversed(np, np.length());
}
/**
* Returns the last numDigits of the reversed phone number
* Returns null if np == null
*/
private static String
internalGetStrippedReversed(String np, int numDigits) {
if (np == null) return null;
StringBuilder ret = new StringBuilder(numDigits);
int length = np.length();
for (int i = length - 1, s = length
; i >= 0 && (s - i) <= numDigits ; i--
) {
char c = np.charAt(i);
ret.append(c);
}
return ret.toString();
}
/**
* Basically: makes sure there's a + in front of a
* TOA_International number
*
* Returns null if s == null
*/
public static String
stringFromStringAndTOA(String s, int TOA) {
if (s == null) return null;
if (TOA == TOA_International && s.length() > 0 && s.charAt(0) != '+') {
return "+" + s;
}
return s;
}
/**
* Returns the TOA for the given dial string
* Basically, returns TOA_International if there's a + prefix
*/
public static int
toaFromString(String s) {
if (s != null && s.length() > 0 && s.charAt(0) == '+') {
return TOA_International;
}
return TOA_Unknown;
}
/**
* 3GPP TS 24.008 10.5.4.7
* Called Party BCD Number
*
* See Also TS 51.011 10.5.1 "dialing number/ssc string"
* and TS 11.11 "10.3.1 EF adn (Abbreviated dialing numbers)"
*
* @param bytes the data buffer
* @param offset should point to the TOA (aka. TON/NPI) octet after the length byte
* @param length is the number of bytes including TOA byte
* and must be at least 2
*
* @return partial string on invalid decode
*
* FIXME(mkf) support alphanumeric address type
* currently implemented in SMSMessage.getAddress()
*/
public static String
calledPartyBCDToString (byte[] bytes, int offset, int length) {
boolean prependPlus = false;
StringBuilder ret = new StringBuilder(1 + length * 2);
if (length < 2) {
return "";
}
//Only TON field should be taken in consideration
if ((bytes[offset] & 0xf0) == (TOA_International & 0xf0)) {
prependPlus = true;
}
internalCalledPartyBCDFragmentToString(
ret, bytes, offset + 1, length - 1);
if (prependPlus && ret.length() == 0) {
// If the only thing there is a prepended plus, return ""
return "";
}
if (prependPlus) {
// This is an "international number" and should have
// a plus prepended to the dialing number. But there
// can also be GSM MMI codes as defined in TS 22.030 6.5.2
// so we need to handle those also.
//
// http://web.telia.com/~u47904776/gsmkode.htm
// has a nice list of some of these GSM codes.
//
// Examples are:
// **21*+886988171479#
// **21*8311234567#
// *21#
// #21#
// *#21#
// *31#+11234567890
// #31#+18311234567
// #31#8311234567
// 18311234567
// +18311234567#
// +18311234567
// Odd ball cases that some phones handled
// where there is no dialing number so they
// append the "+"
// *21#+
// **21#+
String retString = ret.toString();
Pattern p = Pattern.compile("(^[#*])(.*)([#*])(.*)(#)$");
Matcher m = p.matcher(retString);
if (m.matches()) {
if ("".equals(m.group(2))) {
// Started with two [#*] ends with #
// So no dialing number and we'll just
// append a +, this handles **21#+
ret = new StringBuilder();
ret.append(m.group(1));
ret.append(m.group(3));
ret.append(m.group(4));
ret.append(m.group(5));
ret.append("+");
} else {
// Starts with [#*] and ends with #
// Assume group 4 is a dialing number
// such as *21*+1234554#
ret = new StringBuilder();
ret.append(m.group(1));
ret.append(m.group(2));
ret.append(m.group(3));
ret.append("+");
ret.append(m.group(4));
ret.append(m.group(5));
}
} else {
p = Pattern.compile("(^[#*])(.*)([#*])(.*)");
m = p.matcher(retString);
if (m.matches()) {
// Starts with [#*] and only one other [#*]
// Assume the data after last [#*] is dialing
// number (i.e. group 4) such as *31#+11234567890.
// This also includes the odd ball *21#+
ret = new StringBuilder();
ret.append(m.group(1));
ret.append(m.group(2));
ret.append(m.group(3));
ret.append("+");
ret.append(m.group(4));
} else {
// Does NOT start with [#*] just prepend '+'
ret = new StringBuilder();
ret.append('+');
ret.append(retString);
}
}
}
return ret.toString();
}
private static void
internalCalledPartyBCDFragmentToString(
StringBuilder sb, byte [] bytes, int offset, int length) {
for (int i = offset ; i < length + offset ; i++) {
byte b;
char c;
c = bcdToChar((byte)(bytes[i] & 0xf));
if (c == 0) {
return;
}
sb.append(c);
// FIXME(mkf) TS 23.040 9.1.2.3 says
// "if a mobile receives 1111 in a position prior to
// the last semi-octet then processing shall commence with
// the next semi-octet and the intervening
// semi-octet shall be ignored"
// How does this jive with 24.008 10.5.4.7
b = (byte)((bytes[i] >> 4) & 0xf);
if (b == 0xf && i + 1 == length + offset) {
//ignore final 0xf
break;
}
c = bcdToChar(b);
if (c == 0) {
return;
}
sb.append(c);
}
}
/**
* Like calledPartyBCDToString, but field does not start with a
* TOA byte. For example: SIM ADN extension fields
*/
public static String
calledPartyBCDFragmentToString(byte [] bytes, int offset, int length) {
StringBuilder ret = new StringBuilder(length * 2);
internalCalledPartyBCDFragmentToString(ret, bytes, offset, length);
return ret.toString();
}
/** returns 0 on invalid value */
private static char
bcdToChar(byte b) {
if (b < 0xa) {
return (char)('0' + b);
} else switch (b) {
case 0xa: return '*';
case 0xb: return '#';
case 0xc: return PAUSE;
case 0xd: return WILD;
default: return 0;
}
}
private static int
charToBCD(char c) {
if (c >= '0' && c <= '9') {
return c - '0';
} else if (c == '*') {
return 0xa;
} else if (c == '#') {
return 0xb;
} else if (c == PAUSE) {
return 0xc;
} else if (c == WILD) {
return 0xd;
} else {
throw new RuntimeException ("invalid char for BCD " + c);
}
}
/**
* Return true iff the network portion of <code>address</code> is,
* as far as we can tell on the device, suitable for use as an SMS
* destination address.
*/
public static boolean isWellFormedSmsAddress(String address) {
String networkPortion =
PhoneNumberUtils.extractNetworkPortion(address);
return (!(networkPortion.equals("+")
|| TextUtils.isEmpty(networkPortion)))
&& isDialable(networkPortion);
}
public static boolean isGlobalPhoneNumber(String phoneNumber) {
if (TextUtils.isEmpty(phoneNumber)) {
return false;
}
Matcher match = GLOBAL_PHONE_NUMBER_PATTERN.matcher(phoneNumber);
return match.matches();
}
private static boolean isDialable(String address) {
for (int i = 0, count = address.length(); i < count; i++) {
if (!isDialable(address.charAt(i))) {
return false;
}
}
return true;
}
private static boolean isNonSeparator(String address) {
for (int i = 0, count = address.length(); i < count; i++) {
if (!isNonSeparator(address.charAt(i))) {
return false;
}
}
return true;
}
/**
* Note: calls extractNetworkPortion(), so do not use for
* SIM EF[ADN] style records
*
* Returns null if network portion is empty.
*/
public static byte[]
networkPortionToCalledPartyBCD(String s) {
String networkPortion = extractNetworkPortion(s);
return numberToCalledPartyBCDHelper(networkPortion, false);
}
/**
* Same as {@link #networkPortionToCalledPartyBCD}, but includes a
* one-byte length prefix.
*/
public static byte[]
networkPortionToCalledPartyBCDWithLength(String s) {
String networkPortion = extractNetworkPortion(s);
return numberToCalledPartyBCDHelper(networkPortion, true);
}
/**
* Convert a dialing number to BCD byte array
*
* @param number dialing number string
* if the dialing number starts with '+', set to international TOA
* @return BCD byte array
*/
public static byte[]
numberToCalledPartyBCD(String number) {
return numberToCalledPartyBCDHelper(number, false);
}
/**
* If includeLength is true, prepend a one-byte length value to
* the return array.
*/
private static byte[]
numberToCalledPartyBCDHelper(String number, boolean includeLength) {
int numberLenReal = number.length();
int numberLenEffective = numberLenReal;
boolean hasPlus = number.indexOf('+') != -1;
if (hasPlus) numberLenEffective--;
if (numberLenEffective == 0) return null;
int resultLen = (numberLenEffective + 1) / 2; // Encoded numbers require only 4 bits each.
int extraBytes = 1; // Prepended TOA byte.
if (includeLength) extraBytes++; // Optional prepended length byte.
resultLen += extraBytes;
byte[] result = new byte[resultLen];
int digitCount = 0;
for (int i = 0; i < numberLenReal; i++) {
char c = number.charAt(i);
if (c == '+') continue;
int shift = ((digitCount & 0x01) == 1) ? 4 : 0;
result[extraBytes + (digitCount >> 1)] |= (byte)((charToBCD(c) & 0x0F) << shift);
digitCount++;
}
// 1-fill any trailing odd nibble/quartet.
if ((digitCount & 0x01) == 1) result[extraBytes + (digitCount >> 1)] |= 0xF0;
int offset = 0;
if (includeLength) result[offset++] = (byte)(resultLen - 1);
result[offset] = (byte)(hasPlus ? TOA_International : TOA_Unknown);
return result;
}
//================ Number formatting =========================
/** The current locale is unknown, look for a country code or don't format */
public static final int FORMAT_UNKNOWN = 0;
/** NANP formatting */
public static final int FORMAT_NANP = 1;
/** Japanese formatting */
public static final int FORMAT_JAPAN = 2;
/** List of country codes for countries that use the NANP */
private static final String[] NANP_COUNTRIES = new String[] {
"US", // United States
"CA", // Canada
"AS", // American Samoa
"AI", // Anguilla
"AG", // Antigua and Barbuda
"BS", // Bahamas
"BB", // Barbados
"BM", // Bermuda
"VG", // British Virgin Islands
"KY", // Cayman Islands
"DM", // Dominica
"DO", // Dominican Republic
"GD", // Grenada
"GU", // Guam
"JM", // Jamaica
"PR", // Puerto Rico
"MS", // Montserrat
"MP", // Northern Mariana Islands
"KN", // Saint Kitts and Nevis
"LC", // Saint Lucia
"VC", // Saint Vincent and the Grenadines
"TT", // Trinidad and Tobago
"TC", // Turks and Caicos Islands
"VI", // U.S. Virgin Islands
};
/**
* Breaks the given number down and formats it according to the rules
* for the country the number is from.
*
* @param source The phone number to format
* @return A locally acceptable formatting of the input, or the raw input if
* formatting rules aren't known for the number
*
* @deprecated Use {@link #formatNumber(String phoneNumber, String defaultCountryIso)} instead
*/
public static String formatNumber(String source) {
SpannableStringBuilder text = new SpannableStringBuilder(source);
formatNumber(text, getFormatTypeForLocale(Locale.getDefault()));
return text.toString();
}
/**
* Formats the given number with the given formatting type. Currently
* {@link #FORMAT_NANP} and {@link #FORMAT_JAPAN} are supported as a formating type.
*
* @param source the phone number to format
* @param defaultFormattingType The default formatting rules to apply if the number does
* not begin with +[country_code]
* @return The phone number formatted with the given formatting type.
*
* @hide
* @deprecated Use {@link #formatNumber(String phoneNumber, String defaultCountryIso)} instead
*/
public static String formatNumber(String source, int defaultFormattingType) {
SpannableStringBuilder text = new SpannableStringBuilder(source);
formatNumber(text, defaultFormattingType);
return text.toString();
}
/**
* Returns the phone number formatting type for the given locale.
*
* @param locale The locale of interest, usually {@link Locale#getDefault()}
* @return The formatting type for the given locale, or FORMAT_UNKNOWN if the formatting
* rules are not known for the given locale
*
* @deprecated Use {@link #formatNumber(String phoneNumber, String defaultCountryIso)} instead
*/
public static int getFormatTypeForLocale(Locale locale) {
String country = locale.getCountry();
return getFormatTypeFromCountryCode(country);
}
/**
* Formats a phone number in-place. Currently {@link #FORMAT_JAPAN} and {@link #FORMAT_NANP}
* is supported as a second argument.
*
* @param text The number to be formatted, will be modified with the formatting
* @param defaultFormattingType The default formatting rules to apply if the number does
* not begin with +[country_code]
*
* @deprecated Use {@link #formatNumber(String phoneNumber, String defaultCountryIso)} instead
*/
public static void formatNumber(Editable text, int defaultFormattingType) {
int formatType = defaultFormattingType;
if (text.length() > 2 && text.charAt(0) == '+') {
if (text.charAt(1) == '1') {
formatType = FORMAT_NANP;
} else if (text.length() >= 3 && text.charAt(1) == '8'
&& text.charAt(2) == '1') {
formatType = FORMAT_JAPAN;
} else {
formatType = FORMAT_UNKNOWN;
}
}
switch (formatType) {
case FORMAT_NANP:
formatNanpNumber(text);
return;
case FORMAT_JAPAN:
formatJapaneseNumber(text);
return;
case FORMAT_UNKNOWN:
removeDashes(text);
return;
}
}
private static final int NANP_STATE_DIGIT = 1;
private static final int NANP_STATE_PLUS = 2;
private static final int NANP_STATE_ONE = 3;
private static final int NANP_STATE_DASH = 4;
/**
* Formats a phone number in-place using the NANP formatting rules. Numbers will be formatted
* as:
*
* <p><code>
* xxxxx
* xxx-xxxx
* xxx-xxx-xxxx
* 1-xxx-xxx-xxxx
* +1-xxx-xxx-xxxx
* </code></p>
*
* @param text the number to be formatted, will be modified with the formatting
*
* @deprecated Use {@link #formatNumber(String phoneNumber, String defaultCountryIso)} instead
*/
public static void formatNanpNumber(Editable text) {
int length = text.length();
if (length > "+1-nnn-nnn-nnnn".length()) {
// The string is too long to be formatted
return;
} else if (length <= 5) {
// The string is either a shortcode or too short to be formatted
return;
}
CharSequence saved = text.subSequence(0, length);
// Strip the dashes first, as we're going to add them back
removeDashes(text);
length = text.length();
// When scanning the number we record where dashes need to be added,
// if they're non-0 at the end of the scan the dashes will be added in
// the proper places.
int dashPositions[] = new int[3];
int numDashes = 0;
int state = NANP_STATE_DIGIT;
int numDigits = 0;
for (int i = 0; i < length; i++) {
char c = text.charAt(i);
switch (c) {
case '1':
if (numDigits == 0 || state == NANP_STATE_PLUS) {
state = NANP_STATE_ONE;
break;
}
// fall through
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case '0':
if (state == NANP_STATE_PLUS) {
// Only NANP number supported for now
text.replace(0, length, saved);
return;
} else if (state == NANP_STATE_ONE) {
// Found either +1 or 1, follow it up with a dash
dashPositions[numDashes++] = i;
} else if (state != NANP_STATE_DASH && (numDigits == 3 || numDigits == 6)) {
// Found a digit that should be after a dash that isn't
dashPositions[numDashes++] = i;
}
state = NANP_STATE_DIGIT;
numDigits++;
break;
case '-':
state = NANP_STATE_DASH;
break;
case '+':
if (i == 0) {
// Plus is only allowed as the first character
state = NANP_STATE_PLUS;
break;
}
// Fall through
default:
// Unknown character, bail on formatting
text.replace(0, length, saved);
return;
}
}
if (numDigits == 7) {
// With 7 digits we want xxx-xxxx, not xxx-xxx-x
numDashes--;
}
// Actually put the dashes in place
for (int i = 0; i < numDashes; i++) {
int pos = dashPositions[i];
text.replace(pos + i, pos + i, "-");
}
// Remove trailing dashes
int len = text.length();
while (len > 0) {
if (text.charAt(len - 1) == '-') {
text.delete(len - 1, len);
len--;
} else {
break;
}
}
}
/**
* Formats a phone number in-place using the Japanese formatting rules.
* Numbers will be formatted as:
*
* <p><code>
* 03-xxxx-xxxx
* 090-xxxx-xxxx
* 0120-xxx-xxx
* +81-3-xxxx-xxxx
* +81-90-xxxx-xxxx
* </code></p>
*
* @param text the number to be formatted, will be modified with
* the formatting
*
* @deprecated Use {@link #formatNumber(String phoneNumber, String defaultCountryIso)} instead
*/
public static void formatJapaneseNumber(Editable text) {
JapanesePhoneNumberFormatter.format(text);
}
/**
* Removes all dashes from the number.
*
* @param text the number to clear from dashes
*/
private static void removeDashes(Editable text) {
int p = 0;
while (p < text.length()) {
if (text.charAt(p) == '-') {
text.delete(p, p + 1);
} else {
p++;
}
}
}
/**
* Format the given phoneNumber to the E.164 representation.
* <p>
* The given phone number must have an area code and could have a country
* code.
* <p>
* The defaultCountryIso is used to validate the given number and generate
* the E.164 phone number if the given number doesn't have a country code.
*
* @param phoneNumber
* the phone number to format
* @param defaultCountryIso
* the ISO 3166-1 two letters country code
* @return the E.164 representation, or null if the given phone number is
* not valid.
*/
public static String formatNumberToE164(String phoneNumber, String defaultCountryIso) {
PhoneNumberUtil util = PhoneNumberUtil.getInstance();
String result = null;
try {
PhoneNumber pn = util.parse(phoneNumber, defaultCountryIso);
if (util.isValidNumber(pn)) {
result = util.format(pn, PhoneNumberFormat.E164);
}
} catch (NumberParseException e) {
}
return 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.
*/
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;
}
PhoneNumberUtil util = PhoneNumberUtil.getInstance();
String result = null;
try {
PhoneNumber pn = util.parseAndKeepRawInput(phoneNumber, defaultCountryIso);
result = util.formatInOriginalFormat(pn, defaultCountryIso);
} catch (NumberParseException e) {
}
return result;
}
/**
* Format 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.
*/
public static String formatNumber(
String phoneNumber, String phoneNumberE164, String defaultCountryIso) {
int len = phoneNumber.length();
for (int i = 0; i < len; i++) {
if (!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) {
}
}
String result = formatNumber(phoneNumber, defaultCountryIso);
return result != null ? result : phoneNumber;
}
/**
* 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.
*/
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();
}
/**
* Replaces all unicode(e.g. Arabic, Persian) digits with their decimal digit equivalents.
*
* @param number the number to perform the replacement on.
* @return the replaced number.
*/
public static String replaceUnicodeDigits(String number) {
StringBuilder normalizedDigits = new StringBuilder(number.length());
for (char c : number.toCharArray()) {
int digit = Character.digit(c, 10);
if (digit != -1) {
normalizedDigits.append(digit);
} else {
normalizedDigits.append(c);
}
}
return normalizedDigits.toString();
}
// Three and four digit phone numbers for either special services,
// or 3-6 digit addresses from the network (eg carrier-originated SMS messages) should
// not match.
//
// This constant used to be 5, but SMS short codes has increased in length and
// can be easily 6 digits now days. Most countries have SMS short code length between
// 3 to 6 digits. The exceptions are
//
// Australia: Short codes are six or eight digits in length, starting with the prefix "19"
// followed by an additional four or six digits and two.
// Czech Republic: Codes are seven digits in length for MO and five (not billed) or
// eight (billed) for MT direction
//
// see http://en.wikipedia.org/wiki/Short_code#Regional_differences for reference
//
// However, in order to loose match 650-555-1212 and 555-1212, we need to set the min match
// to 7.
static final int MIN_MATCH = 7;
/**
* Checks a given number against the list of
* emergency numbers provided by the RIL and SIM card.
*
* @param number the number to look up.
* @return true if the number is in the list of emergency numbers
* listed in the RIL / SIM, otherwise return false.
*/
public static boolean isEmergencyNumber(String number) {
// Return true only if the specified number *exactly* matches
// one of the emergency numbers listed by the RIL / SIM.
return isEmergencyNumberInternal(number, true /* useExactMatch */);
}
/**
* Checks if given number might *potentially* result in
* a call to an emergency service on the current network.
*
* Specifically, this method will return true if the specified number
* is an emergency number according to the list managed by the RIL or
* SIM, *or* if the specified number simply starts with the same
* digits as any of the emergency numbers listed in the RIL / SIM.
*
* This method is intended for internal use by the phone app when
* deciding whether to allow ACTION_CALL intents from 3rd party apps
* (where we're required to *not* allow emergency calls to be placed.)
*
* @param number the number to look up.
* @return true if the number is in the list of emergency numbers
* listed in the RIL / SIM, *or* if the number starts with the
* same digits as any of those emergency numbers.
*
* @hide
*/
public static boolean isPotentialEmergencyNumber(String number) {
// Check against the emergency numbers listed by the RIL / SIM,
// and *don't* require an exact match.
return isEmergencyNumberInternal(number, false /* useExactMatch */);
}
/**
* Helper function for isEmergencyNumber(String) and
* isPotentialEmergencyNumber(String).
*
* @param number the number to look up.
*
* @param useExactMatch if true, consider a number to be an emergency
* number only if it *exactly* matches a number listed in
* the RIL / SIM. If false, a number is considered to be an
* emergency number if it simply starts with the same digits
* as any of the emergency numbers listed in the RIL / SIM.
* (Setting useExactMatch to false allows you to identify
* number that could *potentially* result in emergency calls
* since many networks will actually ignore trailing digits
* after a valid emergency number.)
*
* @return true if the number is in the list of emergency numbers
* listed in the RIL / sim, otherwise return false.
*/
private static boolean isEmergencyNumberInternal(String number, boolean useExactMatch) {
return isEmergencyNumberInternal(number, null, useExactMatch);
}
/**
* Checks if a given number is an emergency number for a specific country.
*
* @param number the number to look up.
* @param defaultCountryIso the specific country which the number should be checked against
* @return if the number is an emergency number for the specific country, then return true,
* otherwise false
*
* @hide
*/
public static boolean isEmergencyNumber(String number, String defaultCountryIso) {
return isEmergencyNumberInternal(number,
defaultCountryIso,
true /* useExactMatch */);
}
/**
* Checks if a given number might *potentially* result in a call to an
* emergency service, for a specific country.
*
* Specifically, this method will return true if the specified number
* is an emergency number in the specified country, *or* if the number
* simply starts with the same digits as any emergency number for that
* country.
*
* This method is intended for internal use by the phone app when
* deciding whether to allow ACTION_CALL intents from 3rd party apps
* (where we're required to *not* allow emergency calls to be placed.)
*
* @param number the number to look up.
* @param defaultCountryIso the specific country which the number should be checked against
* @return true if the number is an emergency number for the specific
* country, *or* if the number starts with the same digits as
* any of those emergency numbers.
*
* @hide
*/
public static boolean isPotentialEmergencyNumber(String number, String defaultCountryIso) {
return isEmergencyNumberInternal(number,
defaultCountryIso,
false /* useExactMatch */);
}
/**
* Helper function for isEmergencyNumber(String, String) and
* isPotentialEmergencyNumber(String, String).
*
* @param number the number to look up.
* @param defaultCountryIso the specific country which the number should be checked against
* @param useExactMatch if true, consider a number to be an emergency
* number only if it *exactly* matches a number listed in
* the RIL / SIM. If false, a number is considered to be an
* emergency number if it simply starts with the same digits
* as any of the emergency numbers listed in the RIL / SIM.
*
* @return true if the number is an emergency number for the specified country.
*/
private static boolean isEmergencyNumberInternal(String number,
String defaultCountryIso,
boolean useExactMatch) {
// If the number passed in is null, just return false:
if (number == null) return false;
// If the number passed in is a SIP address, return false, since the
// concept of "emergency numbers" is only meaningful for calls placed
// over the cell network.
// (Be sure to do this check *before* calling extractNetworkPortionAlt(),
// since the whole point of extractNetworkPortionAlt() is to filter out
// any non-dialable characters (which would turn 'abc911def@example.com'
// into '911', for example.))
if (isUriNumber(number)) {
return false;
}
// Strip the separators from the number before comparing it
// to the list.
number = extractNetworkPortionAlt(number);
// retrieve the list of emergency numbers
// check read-write ecclist property first
String numbers = SystemProperties.get("ril.ecclist");
if (TextUtils.isEmpty(numbers)) {
// then read-only ecclist property since old RIL only uses this
numbers = SystemProperties.get("ro.ril.ecclist");
}
if (!TextUtils.isEmpty(numbers)) {
// searches through the comma-separated list for a match,
// return true if one is found.
for (String emergencyNum : numbers.split(",")) {
// It is not possible to append additional digits to an emergency number to dial
// the number in Brazil - it won't connect.
if (useExactMatch || "BR".equalsIgnoreCase(defaultCountryIso)) {
if (number.equals(emergencyNum)) {
return true;
}
} else {
if (number.startsWith(emergencyNum)) {
return true;
}
}
}
// no matches found against the list!
return false;
}
Rlog.d(LOG_TAG, "System property doesn't provide any emergency numbers."
+ " Use embedded logic for determining ones.");
// No ecclist system property, so use our own list.
if (defaultCountryIso != null) {
ShortNumberUtil util = new ShortNumberUtil();
if (useExactMatch) {
return util.isEmergencyNumber(number, defaultCountryIso);
} else {
return util.connectsToEmergencyNumber(number, defaultCountryIso);
}
} else {
if (useExactMatch) {
return (number.equals("112") || number.equals("911"));
} else {
return (number.startsWith("112") || number.startsWith("911"));
}
}
}
/**
* Checks if a given number is an emergency number for the country that the user is in.
*
* @param number the number to look up.
* @param context the specific context which the number should be checked against
* @return true if the specified number is an emergency number for the country the user
* is currently in.
*/
public static boolean isLocalEmergencyNumber(String number, Context context) {
return isLocalEmergencyNumberInternal(number,
context,
true /* useExactMatch */);
}
/**
* Checks if a given number might *potentially* result in a call to an
* emergency service, for the country that the user is in. The current
* country is determined using the CountryDetector.
*
* Specifically, this method will return true if the specified number
* is an emergency number in the current country, *or* if the number
* simply starts with the same digits as any emergency number for the
* current country.
*
* This method is intended for internal use by the phone app when
* deciding whether to allow ACTION_CALL intents from 3rd party apps
* (where we're required to *not* allow emergency calls to be placed.)
*
* @param number the number to look up.
* @param context the specific context which the number should be checked against
* @return true if the specified number is an emergency number for a local country, based on the
* CountryDetector.
*
* @see android.location.CountryDetector
* @hide
*/
public static boolean isPotentialLocalEmergencyNumber(String number, Context context) {
return isLocalEmergencyNumberInternal(number,
context,
false /* useExactMatch */);
}
/**
* Helper function for isLocalEmergencyNumber() and
* isPotentialLocalEmergencyNumber().
*
* @param number the number to look up.
* @param context the specific context which the number should be checked against
* @param useExactMatch if true, consider a number to be an emergency
* number only if it *exactly* matches a number listed in
* the RIL / SIM. If false, a number is considered to be an
* emergency number if it simply starts with the same digits
* as any of the emergency numbers listed in the RIL / SIM.
*
* @return true if the specified number is an emergency number for a
* local country, based on the CountryDetector.
*
* @see android.location.CountryDetector
*/
private static boolean isLocalEmergencyNumberInternal(String number,
Context context,
boolean useExactMatch) {
String countryIso;
CountryDetector detector = (CountryDetector) context.getSystemService(
Context.COUNTRY_DETECTOR);
if (detector != null && detector.detectCountry() != null) {
countryIso = detector.detectCountry().getCountryIso();
} else {
Locale locale = context.getResources().getConfiguration().locale;
countryIso = locale.getCountry();
Rlog.w(LOG_TAG, "No CountryDetector; falling back to countryIso based on locale: "
+ countryIso);
}
return isEmergencyNumberInternal(number, countryIso, useExactMatch);
}
/**
* isVoiceMailNumber: checks a given number against the voicemail
* number provided by the RIL and SIM card. The caller must have
* the READ_PHONE_STATE credential.
*
* @param number the number to look up.
* @return true if the number is in the list of voicemail. False
* otherwise, including if the caller does not have the permission
* to read the VM number.
*/
public static boolean isVoiceMailNumber(String number) {
String vmNumber;
try {
vmNumber = TelephonyManager.getDefault().getVoiceMailNumber();
} catch (SecurityException ex) {
return false;
}
// Strip the separators from the number before comparing it
// to the list.
number = extractNetworkPortionAlt(number);
// compare tolerates null so we need to make sure that we
// don't return true when both are null.
return !TextUtils.isEmpty(number) && compare(number, vmNumber);
}
/**
* Translates any alphabetic letters (i.e. [A-Za-z]) in the
* specified phone number into the equivalent numeric digits,
* according to the phone keypad letter mapping described in
* ITU E.161 and ISO/IEC 9995-8.
*
* @return the input string, with alpha letters converted to numeric
* digits using the phone keypad letter mapping. For example,
* an input of "1-800-GOOG-411" will return "1-800-4664-411".
*/
public static String convertKeypadLettersToDigits(String input) {
if (input == null) {
return input;
}
int len = input.length();
if (len == 0) {
return input;
}
char[] out = input.toCharArray();
for (int i = 0; i < len; i++) {
char c = out[i];
// If this char isn't in KEYPAD_MAP at all, just leave it alone.
out[i] = (char) KEYPAD_MAP.get(c, c);
}
return new String(out);
}
/**
* The phone keypad letter mapping (see ITU E.161 or ISO/IEC 9995-8.)
* TODO: This should come from a resource.
*/
private static final SparseIntArray KEYPAD_MAP = new SparseIntArray();
static {
KEYPAD_MAP.put('a', '2'); KEYPAD_MAP.put('b', '2'); KEYPAD_MAP.put('c', '2');
KEYPAD_MAP.put('A', '2'); KEYPAD_MAP.put('B', '2'); KEYPAD_MAP.put('C', '2');
KEYPAD_MAP.put('d', '3'); KEYPAD_MAP.put('e', '3'); KEYPAD_MAP.put('f', '3');
KEYPAD_MAP.put('D', '3'); KEYPAD_MAP.put('E', '3'); KEYPAD_MAP.put('F', '3');
KEYPAD_MAP.put('g', '4'); KEYPAD_MAP.put('h', '4'); KEYPAD_MAP.put('i', '4');
KEYPAD_MAP.put('G', '4'); KEYPAD_MAP.put('H', '4'); KEYPAD_MAP.put('I', '4');
KEYPAD_MAP.put('j', '5'); KEYPAD_MAP.put('k', '5'); KEYPAD_MAP.put('l', '5');
KEYPAD_MAP.put('J', '5'); KEYPAD_MAP.put('K', '5'); KEYPAD_MAP.put('L', '5');
KEYPAD_MAP.put('m', '6'); KEYPAD_MAP.put('n', '6'); KEYPAD_MAP.put('o', '6');
KEYPAD_MAP.put('M', '6'); KEYPAD_MAP.put('N', '6'); KEYPAD_MAP.put('O', '6');
KEYPAD_MAP.put('p', '7'); KEYPAD_MAP.put('q', '7'); KEYPAD_MAP.put('r', '7'); KEYPAD_MAP.put('s', '7');
KEYPAD_MAP.put('P', '7'); KEYPAD_MAP.put('Q', '7'); KEYPAD_MAP.put('R', '7'); KEYPAD_MAP.put('S', '7');
KEYPAD_MAP.put('t', '8'); KEYPAD_MAP.put('u', '8'); KEYPAD_MAP.put('v', '8');
KEYPAD_MAP.put('T', '8'); KEYPAD_MAP.put('U', '8'); KEYPAD_MAP.put('V', '8');
KEYPAD_MAP.put('w', '9'); KEYPAD_MAP.put('x', '9'); KEYPAD_MAP.put('y', '9'); KEYPAD_MAP.put('z', '9');
KEYPAD_MAP.put('W', '9'); KEYPAD_MAP.put('X', '9'); KEYPAD_MAP.put('Y', '9'); KEYPAD_MAP.put('Z', '9');
}
//================ Plus Code formatting =========================
private static final char PLUS_SIGN_CHAR = '+';
private static final String PLUS_SIGN_STRING = "+";
private static final String NANP_IDP_STRING = "011";
private static final int NANP_LENGTH = 10;
/**
* This function checks if there is a plus sign (+) in the passed-in dialing number.
* If there is, it processes the plus sign based on the default telephone
* numbering plan of the system when the phone is activated and the current
* telephone numbering plan of the system that the phone is camped on.
* Currently, we only support the case that the default and current telephone
* numbering plans are North American Numbering Plan(NANP).
*
* The passed-in dialStr should only contain the valid format as described below,
* 1) the 1st character in the dialStr should be one of the really dialable
* characters listed below
* ISO-LATIN characters 0-9, *, # , +
* 2) the dialStr should already strip out the separator characters,
* every character in the dialStr should be one of the non separator characters
* listed below
* ISO-LATIN characters 0-9, *, # , +, WILD, WAIT, PAUSE
*
* Otherwise, this function returns the dial string passed in
*
* @param dialStr the original dial string
* @return the converted dial string if the current/default countries belong to NANP,
* and if there is the "+" in the original dial string. Otherwise, the original dial
* string returns.
*
* This API is for CDMA only
*
* @hide TODO: pending API Council approval
*/
public static String cdmaCheckAndProcessPlusCode(String dialStr) {
if (!TextUtils.isEmpty(dialStr)) {
if (isReallyDialable(dialStr.charAt(0)) &&
isNonSeparator(dialStr)) {
String currIso = SystemProperties.get(PROPERTY_OPERATOR_ISO_COUNTRY, "");
String defaultIso = SystemProperties.get(PROPERTY_ICC_OPERATOR_ISO_COUNTRY, "");
if (!TextUtils.isEmpty(currIso) && !TextUtils.isEmpty(defaultIso)) {
return cdmaCheckAndProcessPlusCodeByNumberFormat(dialStr,
getFormatTypeFromCountryCode(currIso),
getFormatTypeFromCountryCode(defaultIso));
}
}
}
return dialStr;
}
/**
* Process phone number for CDMA, converting plus code using the home network number format.
* This is used for outgoing SMS messages.
*
* @param dialStr the original dial string
* @return the converted dial string
* @hide for internal use
*/
public static String cdmaCheckAndProcessPlusCodeForSms(String dialStr) {
if (!TextUtils.isEmpty(dialStr)) {
if (isReallyDialable(dialStr.charAt(0)) && isNonSeparator(dialStr)) {
String defaultIso = SystemProperties.get(PROPERTY_ICC_OPERATOR_ISO_COUNTRY, "");
if (!TextUtils.isEmpty(defaultIso)) {
int format = getFormatTypeFromCountryCode(defaultIso);
return cdmaCheckAndProcessPlusCodeByNumberFormat(dialStr, format, format);
}
}
}
return dialStr;
}
/**
* This function should be called from checkAndProcessPlusCode only
* And it is used for test purpose also.
*
* It checks the dial string by looping through the network portion,
* post dial portion 1, post dial porting 2, etc. If there is any
* plus sign, then process the plus sign.
* Currently, this function supports the plus sign conversion within NANP only.
* Specifically, it handles the plus sign in the following ways:
* 1)+1NANP,remove +, e.g.
* +18475797000 is converted to 18475797000,
* 2)+NANP or +non-NANP Numbers,replace + with the current NANP IDP, e.g,
* +8475797000 is converted to 0118475797000,
* +11875767800 is converted to 01111875767800
* 3)+1NANP in post dial string(s), e.g.
* 8475797000;+18475231753 is converted to 8475797000;18475231753
*
*
* @param dialStr the original dial string
* @param currFormat the numbering system of the current country that the phone is camped on
* @param defaultFormat the numbering system of the country that the phone is activated on
* @return the converted dial string if the current/default countries belong to NANP,
* and if there is the "+" in the original dial string. Otherwise, the original dial
* string returns.
*
* @hide
*/
public static String
cdmaCheckAndProcessPlusCodeByNumberFormat(String dialStr,int currFormat,int defaultFormat) {
String retStr = dialStr;
// Checks if the plus sign character is in the passed-in dial string
if (dialStr != null &&
dialStr.lastIndexOf(PLUS_SIGN_STRING) != -1) {
// Format the string based on the rules for the country the number is from,
// and the current country the phone is camped on.
if ((currFormat == defaultFormat) && (currFormat == FORMAT_NANP)) {
// Handle case where default and current telephone numbering plans are NANP.
String postDialStr = null;
String tempDialStr = dialStr;
// Sets the retStr to null since the conversion will be performed below.
retStr = null;
if (DBG) log("checkAndProcessPlusCode,dialStr=" + dialStr);
// This routine is to process the plus sign in the dial string by loop through
// the network portion, post dial portion 1, post dial portion 2... etc. if
// applied
do {
String networkDialStr;
networkDialStr = extractNetworkPortion(tempDialStr);
// Handles the conversion within NANP
networkDialStr = processPlusCodeWithinNanp(networkDialStr);
// Concatenates the string that is converted from network portion
if (!TextUtils.isEmpty(networkDialStr)) {
if (retStr == null) {
retStr = networkDialStr;
} else {
retStr = retStr.concat(networkDialStr);
}
} else {
// This should never happen since we checked the if dialStr is null
// and if it contains the plus sign in the beginning of this function.
// The plus sign is part of the network portion.
Rlog.e("checkAndProcessPlusCode: null newDialStr", networkDialStr);
return dialStr;
}
postDialStr = extractPostDialPortion(tempDialStr);
if (!TextUtils.isEmpty(postDialStr)) {
int dialableIndex = findDialableIndexFromPostDialStr(postDialStr);
// dialableIndex should always be greater than 0
if (dialableIndex >= 1) {
retStr = appendPwCharBackToOrigDialStr(dialableIndex,
retStr,postDialStr);
// Skips the P/W character, extracts the dialable portion
tempDialStr = postDialStr.substring(dialableIndex);
} else {
// Non-dialable character such as P/W should not be at the end of
// the dial string after P/W processing in CdmaConnection.java
// Set the postDialStr to "" to break out of the loop
if (dialableIndex < 0) {
postDialStr = "";
}
Rlog.e("wrong postDialStr=", postDialStr);
}
}
if (DBG) log("checkAndProcessPlusCode,postDialStr=" + postDialStr);
} while (!TextUtils.isEmpty(postDialStr) && !TextUtils.isEmpty(tempDialStr));
} else {
// TODO: Support NANP international conversion and other telephone numbering plans.
// Currently the phone is never used in non-NANP system, so return the original
// dial string.
Rlog.e("checkAndProcessPlusCode:non-NANP not supported", dialStr);
}
}
return retStr;
}
// This function gets the default international dialing prefix
private static String getDefaultIdp( ) {
String ps = null;
SystemProperties.get(PROPERTY_IDP_STRING, ps);
if (TextUtils.isEmpty(ps)) {
ps = NANP_IDP_STRING;
}
return ps;
}
private static boolean isTwoToNine (char c) {
if (c >= '2' && c <= '9') {
return true;
} else {
return false;
}
}
private static int getFormatTypeFromCountryCode (String country) {
// Check for the NANP countries
int length = NANP_COUNTRIES.length;
for (int i = 0; i < length; i++) {
if (NANP_COUNTRIES[i].compareToIgnoreCase(country) == 0) {
return FORMAT_NANP;
}
}
if ("jp".compareToIgnoreCase(country) == 0) {
return FORMAT_JAPAN;
}
return FORMAT_UNKNOWN;
}
/**
* This function checks if the passed in string conforms to the NANP format
* i.e. NXX-NXX-XXXX, N is any digit 2-9 and X is any digit 0-9
*/
private static boolean isNanp (String dialStr) {
boolean retVal = false;
if (dialStr != null) {
if (dialStr.length() == NANP_LENGTH) {
if (isTwoToNine(dialStr.charAt(0)) &&
isTwoToNine(dialStr.charAt(3))) {
retVal = true;
for (int i=1; i<NANP_LENGTH; i++ ) {
char c=dialStr.charAt(i);
if (!PhoneNumberUtils.isISODigit(c)) {
retVal = false;
break;
}
}
}
}
} else {
Rlog.e("isNanp: null dialStr passed in", dialStr);
}
return retVal;
}
/**
* This function checks if the passed in string conforms to 1-NANP format
*/
private static boolean isOneNanp(String dialStr) {
boolean retVal = false;
if (dialStr != null) {
String newDialStr = dialStr.substring(1);
if ((dialStr.charAt(0) == '1') && isNanp(newDialStr)) {
retVal = true;
}
} else {
Rlog.e("isOneNanp: null dialStr passed in", dialStr);
}
return retVal;
}
/**
* 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.
*
* @hide
* @param number
* @return true if number contains @
*/
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"));
}
/**
* @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")
* @see isUriNumber
*
* @hide
*/
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) {
Rlog.w(LOG_TAG,
"getUsernameFromUriNumber: no delimiter found in SIP addr '" + number + "'");
delimiterIndex = number.length();
}
return number.substring(0, delimiterIndex);
}
/**
* This function handles the plus code conversion within NANP CDMA network
* If the number format is
* 1)+1NANP,remove +,
* 2)other than +1NANP, any + numbers,replace + with the current IDP
*/
private static String processPlusCodeWithinNanp(String networkDialStr) {
String retStr = networkDialStr;
if (DBG) log("processPlusCodeWithinNanp,networkDialStr=" + networkDialStr);
// If there is a plus sign at the beginning of the dial string,
// Convert the plus sign to the default IDP since it's an international number
if (networkDialStr != null &&
networkDialStr.charAt(0) == PLUS_SIGN_CHAR &&
networkDialStr.length() > 1) {
String newStr = networkDialStr.substring(1);
if (isOneNanp(newStr)) {
// Remove the leading plus sign
retStr = newStr;
} else {
String idpStr = getDefaultIdp();
// Replaces the plus sign with the default IDP
retStr = networkDialStr.replaceFirst("[+]", idpStr);
}
}
if (DBG) log("processPlusCodeWithinNanp,retStr=" + retStr);
return retStr;
}
// This function finds the index of the dialable character(s)
// in the post dial string
private static int findDialableIndexFromPostDialStr(String postDialStr) {
for (int index = 0;index < postDialStr.length();index++) {
char c = postDialStr.charAt(index);
if (isReallyDialable(c)) {
return index;
}
}
return -1;
}
// This function appends the non-dialable P/W character to the original
// dial string based on the dialable index passed in
private static String
appendPwCharBackToOrigDialStr(int dialableIndex,String origStr, String dialStr) {
String retStr;
// There is only 1 P/W character before the dialable characters
if (dialableIndex == 1) {
StringBuilder ret = new StringBuilder(origStr);
ret = ret.append(dialStr.charAt(0));
retStr = ret.toString();
} else {
// It means more than 1 P/W characters in the post dial string,
// appends to retStr
String nonDigitStr = dialStr.substring(0,dialableIndex);
retStr = origStr.concat(nonDigitStr);
}
return retStr;
}
//===== Beginning of utility methods used in compareLoosely() =====
/**
* Phone numbers are stored in "lookup" form in the database
* as reversed strings to allow for caller ID lookup
*
* This method takes a phone number and makes a valid SQL "LIKE"
* string that will match the lookup form
*
*/
/** all of a up to len must be an international prefix or
* separators/non-dialing digits
*/
private static boolean
matchIntlPrefix(String a, int len) {
/* '([^0-9*#+pwn]\+[^0-9*#+pwn] | [^0-9*#+pwn]0(0|11)[^0-9*#+pwn] )$' */
/* 0 1 2 3 45 */
int state = 0;
for (int i = 0 ; i < len ; i++) {
char c = a.charAt(i);
switch (state) {
case 0:
if (c == '+') state = 1;
else if (c == '0') state = 2;
else if (isNonSeparator(c)) return false;
break;
case 2:
if (c == '0') state = 3;
else if (c == '1') state = 4;
else if (isNonSeparator(c)) return false;
break;
case 4:
if (c == '1') state = 5;
else if (isNonSeparator(c)) return false;
break;
default:
if (isNonSeparator(c)) return false;
break;
}
}
return state == 1 || state == 3 || state == 5;
}
/** all of 'a' up to len must be a (+|00|011)country code)
* We're fast and loose with the country code. Any \d{1,3} matches */
private static boolean
matchIntlPrefixAndCC(String a, int len) {
/* [^0-9*#+pwn]*(\+|0(0|11)\d\d?\d? [^0-9*#+pwn] $ */
/* 0 1 2 3 45 6 7 8 */
int state = 0;
for (int i = 0 ; i < len ; i++ ) {
char c = a.charAt(i);
switch (state) {
case 0:
if (c == '+') state = 1;
else if (c == '0') state = 2;
else if (isNonSeparator(c)) return false;
break;
case 2:
if (c == '0') state = 3;
else if (c == '1') state = 4;
else if (isNonSeparator(c)) return false;
break;
case 4:
if (c == '1') state = 5;
else if (isNonSeparator(c)) return false;
break;
case 1:
case 3:
case 5:
if (isISODigit(c)) state = 6;
else if (isNonSeparator(c)) return false;
break;
case 6:
case 7:
if (isISODigit(c)) state++;
else if (isNonSeparator(c)) return false;
break;
default:
if (isNonSeparator(c)) return false;
}
}
return state == 6 || state == 7 || state == 8;
}
/** all of 'a' up to len must match non-US trunk prefix ('0') */
private static boolean
matchTrunkPrefix(String a, int len) {
boolean found;
found = false;
for (int i = 0 ; i < len ; i++) {
char c = a.charAt(i);
if (c == '0' && !found) {
found = true;
} else if (isNonSeparator(c)) {
return false;
}
}
return found;
}
//===== End of utility methods used only in compareLoosely() =====
//===== Beginning of utility methods used only in compareStrictly() ====
/*
* If true, the number is country calling code.
*/
private static final boolean COUNTRY_CALLING_CALL[] = {
true, true, false, false, false, false, false, true, false, false,
false, false, false, false, false, false, false, false, false, false,
true, false, false, false, false, false, false, true, true, false,
true, true, true, true, true, false, true, false, false, true,
true, false, false, true, true, true, true, true, true, true,
false, true, true, true, true, true, true, true, true, false,
true, true, true, true, true, true, true, false, false, false,
false, false, false, false, false, false, false, false, false, false,
false, true, true, true, true, false, true, false, false, true,
true, true, true, true, true, true, false, false, true, false,
};
private static final int CCC_LENGTH = COUNTRY_CALLING_CALL.length;
/**
* @return true when input is valid Country Calling Code.
*/
private static boolean isCountryCallingCode(int countryCallingCodeCandidate) {
return countryCallingCodeCandidate > 0 && countryCallingCodeCandidate < CCC_LENGTH &&
COUNTRY_CALLING_CALL[countryCallingCodeCandidate];
}
/**
* Returns integer corresponding to the input if input "ch" is
* ISO-LATIN characters 0-9.
* Returns -1 otherwise
*/
private static int tryGetISODigit(char ch) {
if ('0' <= ch && ch <= '9') {
return ch - '0';
} else {
return -1;
}
}
private static class CountryCallingCodeAndNewIndex {
public final int countryCallingCode;
public final int newIndex;
public CountryCallingCodeAndNewIndex(int countryCode, int newIndex) {
this.countryCallingCode = countryCode;
this.newIndex = newIndex;
}
}
/*
* Note that this function does not strictly care the country calling code with
* 3 length (like Morocco: +212), assuming it is enough to use the first two
* digit to compare two phone numbers.
*/
private static CountryCallingCodeAndNewIndex tryGetCountryCallingCodeAndNewIndex(
String str, boolean acceptThailandCase) {
// Rough regexp:
// ^[^0-9*#+]*((\+|0(0|11)\d\d?|166) [^0-9*#+] $
// 0 1 2 3 45 6 7 89
//
// In all the states, this function ignores separator characters.
// "166" is the special case for the call from Thailand to the US. Uguu!
int state = 0;
int ccc = 0;
final int length = str.length();
for (int i = 0 ; i < length ; i++ ) {
char ch = str.charAt(i);
switch (state) {
case 0:
if (ch == '+') state = 1;
else if (ch == '0') state = 2;
else if (ch == '1') {
if (acceptThailandCase) {
state = 8;
} else {
return null;
}
} else if (isDialable(ch)) {
return null;
}
break;
case 2:
if (ch == '0') state = 3;
else if (ch == '1') state = 4;
else if (isDialable(ch)) {
return null;
}
break;
case 4:
if (ch == '1') state = 5;
else if (isDialable(ch)) {
return null;
}
break;
case 1:
case 3:
case 5:
case 6:
case 7:
{
int ret = tryGetISODigit(ch);
if (ret > 0) {
ccc = ccc * 10 + ret;
if (ccc >= 100 || isCountryCallingCode(ccc)) {
return new CountryCallingCodeAndNewIndex(ccc, i + 1);
}
if (state == 1 || state == 3 || state == 5) {
state = 6;
} else {
state++;
}
} else if (isDialable(ch)) {
return null;
}
}
break;
case 8:
if (ch == '6') state = 9;
else if (isDialable(ch)) {
return null;
}
break;
case 9:
if (ch == '6') {
return new CountryCallingCodeAndNewIndex(66, i + 1);
} else {
return null;
}
default:
return null;
}
}
return null;
}
/**
* Currently this function simply ignore the first digit assuming it is
* trunk prefix. Actually trunk prefix is different in each country.
*
* e.g.
* "+79161234567" equals "89161234567" (Russian trunk digit is 8)
* "+33123456789" equals "0123456789" (French trunk digit is 0)
*
*/
private static int tryGetTrunkPrefixOmittedIndex(String str, int currentIndex) {
int length = str.length();
for (int i = currentIndex ; i < length ; i++) {
final char ch = str.charAt(i);
if (tryGetISODigit(ch) >= 0) {
return i + 1;
} else if (isDialable(ch)) {
return -1;
}
}
return -1;
}
/**
* Return true if the prefix of "str" is "ignorable". Here, "ignorable" means
* that "str" has only one digit and separator characters. The one digit is
* assumed to be trunk prefix.
*/
private static boolean checkPrefixIsIgnorable(final String str,
int forwardIndex, int backwardIndex) {
boolean trunk_prefix_was_read = false;
while (backwardIndex >= forwardIndex) {
if (tryGetISODigit(str.charAt(backwardIndex)) >= 0) {
if (trunk_prefix_was_read) {
// More than one digit appeared, meaning that "a" and "b"
// is different.
return false;
} else {
// Ignore just one digit, assuming it is trunk prefix.
trunk_prefix_was_read = true;
}
} else if (isDialable(str.charAt(backwardIndex))) {
// Trunk prefix is a digit, not "*", "#"...
return false;
}
backwardIndex--;
}
return true;
}
//==== End of utility methods used only in compareStrictly() =====
}
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