AsYouTypeFormatter.java revision b03a14984ad9b0d8b88337ca714cb831233b99c3
11524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia/* 2ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia * Copyright (C) 2009 The Libphonenumber Authors 31524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * 41524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * Licensed under the Apache License, Version 2.0 (the "License"); 51524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * you may not use this file except in compliance with the License. 61524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * You may obtain a copy of the License at 71524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * 81524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * http://www.apache.org/licenses/LICENSE-2.0 91524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * 101524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * Unless required by applicable law or agreed to in writing, software 111524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * distributed under the License is distributed on an "AS IS" BASIS, 121524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * See the License for the specific language governing permissions and 141524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * limitations under the License. 151524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia */ 161524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 1793f6965c2c041ac707bf1b3bcf5a3f60e452f421Shaopeng Jiapackage com.android.i18n.phonenumbers; 181524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 1993f6965c2c041ac707bf1b3bcf5a3f60e452f421Shaopeng Jiaimport com.android.i18n.phonenumbers.Phonemetadata.NumberFormat; 2093f6965c2c041ac707bf1b3bcf5a3f60e452f421Shaopeng Jiaimport com.android.i18n.phonenumbers.Phonemetadata.PhoneMetadata; 211524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 221524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jiaimport java.util.ArrayList; 23df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jiaimport java.util.Iterator; 241524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jiaimport java.util.List; 251524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jiaimport java.util.regex.Matcher; 261524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jiaimport java.util.regex.Pattern; 271524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 281524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia/** 291524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * A formatter which formats phone numbers as they are entered. 301524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * 31372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * <p>An AsYouTypeFormatter can be created by invoking 32372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * {@link PhoneNumberUtil#getAsYouTypeFormatter}. After that, digits can be added by invoking 33372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * {@link #inputDigit} on the formatter instance, and the partially formatted phone number will be 34372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * returned each time a digit is added. {@link #clear} can be invoked before formatting a new 35372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * number. 361524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * 37372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * <p>See the unittests for more details on how the formatter is to be used. 381524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * 391524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * @author Shaopeng Jia 401524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia */ 411524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jiapublic class AsYouTypeFormatter { 42df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private String currentOutput = ""; 43372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private StringBuilder formattingTemplate = new StringBuilder(); 44df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // The pattern from numberFormat that is currently used to create formattingTemplate. 45df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private String currentFormattingPattern = ""; 46372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private StringBuilder accruedInput = new StringBuilder(); 47372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private StringBuilder accruedInputWithoutFormatting = new StringBuilder(); 48ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // This indicates whether AsYouTypeFormatter is currently doing the formatting. 497900ea273b8c33b3c6f70d7dd559127938d0fc3dShaopeng Jia private boolean ableToFormat = true; 50ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // Set to true when users enter their own formatting. AsYouTypeFormatter will do no formatting at 51ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // all when this is set to true. 52ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia private boolean inputHasFormatting = false; 53203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // This is set to true when we know the user is entering a full national significant number, since 54203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // we have either detected a national prefix or an international dialing prefix. When this is 55203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // true, we will no longer use local number formatting patterns. 56203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia private boolean isCompleteNumber = false; 57372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private boolean isExpectingCountryCallingCode = false; 581524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia private final PhoneNumberUtil phoneUtil = PhoneNumberUtil.getInstance(); 591524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia private String defaultCountry; 60372bff8dd464574d36737d47e495cad14346653cShaopeng Jia 61203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // Character used when appropriate to separate a prefix, such as a long NDD or a country calling 62203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // code, from the national number. 63203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia private static final char SEPARATOR_BEFORE_NATIONAL_NUMBER = ' '; 64372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private static final PhoneMetadata EMPTY_METADATA = 65372bff8dd464574d36737d47e495cad14346653cShaopeng Jia new PhoneMetadata().setInternationalPrefix("NA"); 66bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia private PhoneMetadata defaultMetadata; 67bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia private PhoneMetadata currentMetadata; 681524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 694b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia // A pattern that is used to match character classes in regular expressions. An example of a 704b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia // character class is [1-4]. 7152699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia private static final Pattern CHARACTER_CLASS_PATTERN = Pattern.compile("\\[([^\\[\\]])*\\]"); 724b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia // Any digit in a regular expression that actually denotes a digit. For example, in the regular 734b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia // expression 80[0-2]\d{6,10}, the first 2 digits (8 and 0) are standalone digits, but the rest 744b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia // are not. 754b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia // Two look-aheads are needed because the number following \\d could be a two-digit number, since 764b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia // the phone number can be as long as 15 digits. 774b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia private static final Pattern STANDALONE_DIGIT_PATTERN = Pattern.compile("\\d(?=[^,}][^,}])"); 784b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia 79372bff8dd464574d36737d47e495cad14346653cShaopeng Jia // A pattern that is used to determine if a numberFormat under availableFormats is eligible to be 80372bff8dd464574d36737d47e495cad14346653cShaopeng Jia // used by the AYTF. It is eligible when the format element under numberFormat contains groups of 81372bff8dd464574d36737d47e495cad14346653cShaopeng Jia // the dollar sign followed by a single digit, separated by valid phone number punctuation. This 82372bff8dd464574d36737d47e495cad14346653cShaopeng Jia // prevents invalid punctuation (such as the star sign in Israeli star numbers) getting into the 83372bff8dd464574d36737d47e495cad14346653cShaopeng Jia // output of the AYTF. 84372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private static final Pattern ELIGIBLE_FORMAT_PATTERN = 85372bff8dd464574d36737d47e495cad14346653cShaopeng Jia Pattern.compile("[" + PhoneNumberUtil.VALID_PUNCTUATION + "]*" + 86372bff8dd464574d36737d47e495cad14346653cShaopeng Jia "(\\$\\d" + "[" + PhoneNumberUtil.VALID_PUNCTUATION + "]*)+"); 87203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // A set of characters that, if found in a national prefix formatting rules, are an indicator to 88203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // us that we should separate the national prefix from the number when formatting. 89203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia private static final Pattern NATIONAL_PREFIX_SEPARATORS_PATTERN = Pattern.compile("[- ]"); 90372bff8dd464574d36737d47e495cad14346653cShaopeng Jia 91df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // This is the minimum length of national number accrued that is required to trigger the 92df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // formatter. The first element of the leadingDigitsPattern of each numberFormat contains a 93df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // regular expression that matches up to this number of digits. 94df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private static final int MIN_LEADING_DIGITS_LENGTH = 3; 95df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia 961524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // The digits that have not been entered yet will be represented by a \u2008, the punctuation 971524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // space. 98203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia private static final String DIGIT_PLACEHOLDER = "\u2008"; 99203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia private static final Pattern DIGIT_PATTERN = Pattern.compile(DIGIT_PLACEHOLDER); 1001524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia private int lastMatchPosition = 0; 1014b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia // The position of a digit upon which inputDigitAndRememberPosition is most recently invoked, as 1024b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia // found in the original sequence of characters the user entered. 1030b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia private int originalPosition = 0; 104df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // The position of a digit upon which inputDigitAndRememberPosition is most recently invoked, as 105df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // found in accruedInputWithoutFormatting. 106df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private int positionToRemember = 0; 107ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // This contains anything that has been entered so far preceding the national significant number, 108ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // and it is formatted (e.g. with space inserted). For example, this can contain IDD, country 109ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // code, and/or NDD, etc. 110372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private StringBuilder prefixBeforeNationalNumber = new StringBuilder(); 111203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia private boolean shouldAddSpaceAfterNationalPrefix = false; 112ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // This contains the national prefix that has been extracted. It contains only digits without 113ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // formatting. 114b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia private String extractedNationalPrefix = ""; 115372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private StringBuilder nationalNumber = new StringBuilder(); 116df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private List<NumberFormat> possibleFormats = new ArrayList<NumberFormat>(); 117df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia 118df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // A cache for frequently used country-specific regular expressions. 119df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private RegexCache regexCache = new RegexCache(64); 1201524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 1211524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia /** 12252699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia * Constructs an as-you-type formatter. Should be obtained from {@link 12352699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia * PhoneNumberUtil#getAsYouTypeFormatter}. 1241524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * 1251524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * @param regionCode the country/region where the phone number is being entered 1261524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia */ 1271524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia AsYouTypeFormatter(String regionCode) { 1281524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia defaultCountry = regionCode; 129bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia currentMetadata = getMetadataForRegion(defaultCountry); 130bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia defaultMetadata = currentMetadata; 1311524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 1321524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 133249f28fc9d984e6a7d5ff05ca78d8e7ce280eb54Shaopeng Jia // The metadata needed by this class is the same for all regions sharing the same country calling 134249f28fc9d984e6a7d5ff05ca78d8e7ce280eb54Shaopeng Jia // code. Therefore, we return the metadata for "main" region for this country calling code. 135372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private PhoneMetadata getMetadataForRegion(String regionCode) { 136249f28fc9d984e6a7d5ff05ca78d8e7ce280eb54Shaopeng Jia int countryCallingCode = phoneUtil.getCountryCodeForRegion(regionCode); 137249f28fc9d984e6a7d5ff05ca78d8e7ce280eb54Shaopeng Jia String mainCountry = phoneUtil.getRegionCodeForCountryCode(countryCallingCode); 138249f28fc9d984e6a7d5ff05ca78d8e7ce280eb54Shaopeng Jia PhoneMetadata metadata = phoneUtil.getMetadataForRegion(mainCountry); 139372bff8dd464574d36737d47e495cad14346653cShaopeng Jia if (metadata != null) { 140372bff8dd464574d36737d47e495cad14346653cShaopeng Jia return metadata; 14152699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia } 142372bff8dd464574d36737d47e495cad14346653cShaopeng Jia // Set to a default instance of the metadata. This allows us to function with an incorrect 143372bff8dd464574d36737d47e495cad14346653cShaopeng Jia // region code, even if formatting only works for numbers specified with "+". 144372bff8dd464574d36737d47e495cad14346653cShaopeng Jia return EMPTY_METADATA; 1451524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 1461524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 147df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // Returns true if a new template is created as opposed to reusing the existing template. 148df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private boolean maybeCreateNewTemplate() { 149df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // When there are multiple available formats, the formatter uses the first format where a 150df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // formatting template could be created. 151d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia Iterator<NumberFormat> it = possibleFormats.iterator(); 152d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia while (it.hasNext()) { 153d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia NumberFormat numberFormat = it.next(); 154df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia String pattern = numberFormat.getPattern(); 155df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (currentFormattingPattern.equals(pattern)) { 156df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return false; 157df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 158df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (createFormattingTemplate(numberFormat)) { 159df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia currentFormattingPattern = pattern; 160203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia shouldAddSpaceAfterNationalPrefix = 161203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia NATIONAL_PREFIX_SEPARATORS_PATTERN.matcher( 162203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia numberFormat.getNationalPrefixFormattingRule()).find(); 163ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // With a new formatting template, the matched position using the old template needs to be 164ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // reset. 165ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia lastMatchPosition = 0; 166df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return true; 167d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia } else { // Remove the current number format from possibleFormats. 168d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia it.remove(); 1691524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 1701524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 171df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia ableToFormat = false; 172df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return false; 1731524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 1741524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 175df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private void getAvailableFormats(String leadingThreeDigits) { 1767900ea273b8c33b3c6f70d7dd559127938d0fc3dShaopeng Jia List<NumberFormat> formatList = 177bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia (isCompleteNumber && currentMetadata.intlNumberFormatSize() > 0) 178bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia ? currentMetadata.intlNumberFormats() 179bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia : currentMetadata.numberFormats(); 180bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia boolean nationalPrefixIsUsedByCountry = currentMetadata.hasNationalPrefix(); 181372bff8dd464574d36737d47e495cad14346653cShaopeng Jia for (NumberFormat format : formatList) { 182203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia if (!nationalPrefixIsUsedByCountry || isCompleteNumber || 183203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia format.isNationalPrefixOptionalWhenFormatting() || 184203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia phoneUtil.formattingRuleHasFirstGroupOnly(format.getNationalPrefixFormattingRule())) { 185203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia if (isFormatEligible(format.getFormat())) { 186203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia possibleFormats.add(format); 187203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia } 188372bff8dd464574d36737d47e495cad14346653cShaopeng Jia } 189372bff8dd464574d36737d47e495cad14346653cShaopeng Jia } 190df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia narrowDownPossibleFormats(leadingThreeDigits); 191df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 192df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia 193372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private boolean isFormatEligible(String format) { 194372bff8dd464574d36737d47e495cad14346653cShaopeng Jia return ELIGIBLE_FORMAT_PATTERN.matcher(format).matches(); 195372bff8dd464574d36737d47e495cad14346653cShaopeng Jia } 196372bff8dd464574d36737d47e495cad14346653cShaopeng Jia 197df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private void narrowDownPossibleFormats(String leadingDigits) { 198372bff8dd464574d36737d47e495cad14346653cShaopeng Jia int indexOfLeadingDigitsPattern = leadingDigits.length() - MIN_LEADING_DIGITS_LENGTH; 199df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia Iterator<NumberFormat> it = possibleFormats.iterator(); 200df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia while (it.hasNext()) { 201df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia NumberFormat format = it.next(); 202372bff8dd464574d36737d47e495cad14346653cShaopeng Jia if (format.leadingDigitsPatternSize() > indexOfLeadingDigitsPattern) { 203df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia Pattern leadingDigitsPattern = 204df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia regexCache.getPatternForRegex( 205df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia format.getLeadingDigitsPattern(indexOfLeadingDigitsPattern)); 206df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia Matcher m = leadingDigitsPattern.matcher(leadingDigits); 207df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (!m.lookingAt()) { 208df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia it.remove(); 2091524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 210df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } // else the particular format has no more specific leadingDigitsPattern, and it should be 211df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // retained. 2121524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 2131524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 2141524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 2151524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia private boolean createFormattingTemplate(NumberFormat format) { 2161524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia String numberPattern = format.getPattern(); 2171524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 2180199c997f87434f2c5a7d1df4bb4b5f904312b9fShaopeng Jia // The formatter doesn't format numbers when numberPattern contains "|", e.g. 2190199c997f87434f2c5a7d1df4bb4b5f904312b9fShaopeng Jia // (20|3)\d{4}. In those cases we quickly return. 2200199c997f87434f2c5a7d1df4bb4b5f904312b9fShaopeng Jia if (numberPattern.indexOf('|') != -1) { 2211524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia return false; 2221524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 2231524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 2241524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // Replace anything in the form of [..] with \d 2250199c997f87434f2c5a7d1df4bb4b5f904312b9fShaopeng Jia numberPattern = CHARACTER_CLASS_PATTERN.matcher(numberPattern).replaceAll("\\\\d"); 2261524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 2271524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // Replace any standalone digit (not the one in d{}) with \d 2280199c997f87434f2c5a7d1df4bb4b5f904312b9fShaopeng Jia numberPattern = STANDALONE_DIGIT_PATTERN.matcher(numberPattern).replaceAll("\\\\d"); 229df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia formattingTemplate.setLength(0); 230372bff8dd464574d36737d47e495cad14346653cShaopeng Jia String tempTemplate = getFormattingTemplate(numberPattern, format.getFormat()); 231d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia if (tempTemplate.length() > 0) { 23252699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia formattingTemplate.append(tempTemplate); 23352699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia return true; 23452699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia } 23552699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia return false; 2361524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 2371524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 238372bff8dd464574d36737d47e495cad14346653cShaopeng Jia // Gets a formatting template which can be used to efficiently format a partial number where 2391524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // digits are added one by one. 2401524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia private String getFormattingTemplate(String numberPattern, String numberFormat) { 2411524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // Creates a phone number consisting only of the digit 9 that matches the 2421524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // numberPattern by applying the pattern to the longestPhoneNumber string. 2431524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia String longestPhoneNumber = "999999999999999"; 244df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia Matcher m = regexCache.getPatternForRegex(numberPattern).matcher(longestPhoneNumber); 2451524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia m.find(); // this will always succeed 2461524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia String aPhoneNumber = m.group(); 247d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia // No formatting template can be created if the number of digits entered so far is longer than 248d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia // the maximum the current formatting rule can accommodate. 249d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia if (aPhoneNumber.length() < nationalNumber.length()) { 250d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia return ""; 251d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia } 2521524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // Formats the number according to numberFormat 2531524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia String template = aPhoneNumber.replaceAll(numberPattern, numberFormat); 254203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // Replaces each digit with character DIGIT_PLACEHOLDER 255203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia template = template.replaceAll("9", DIGIT_PLACEHOLDER); 2561524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia return template; 2571524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 2581524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 2591524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia /** 260372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * Clears the internal state of the formatter, so it can be reused. 2611524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia */ 2621524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia public void clear() { 263df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia currentOutput = ""; 2640199c997f87434f2c5a7d1df4bb4b5f904312b9fShaopeng Jia accruedInput.setLength(0); 2650199c997f87434f2c5a7d1df4bb4b5f904312b9fShaopeng Jia accruedInputWithoutFormatting.setLength(0); 266df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia formattingTemplate.setLength(0); 2671524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia lastMatchPosition = 0; 268df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia currentFormattingPattern = ""; 2690199c997f87434f2c5a7d1df4bb4b5f904312b9fShaopeng Jia prefixBeforeNationalNumber.setLength(0); 270b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia extractedNationalPrefix = ""; 2710199c997f87434f2c5a7d1df4bb4b5f904312b9fShaopeng Jia nationalNumber.setLength(0); 2721524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia ableToFormat = true; 273ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia inputHasFormatting = false; 274df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia positionToRemember = 0; 2750b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia originalPosition = 0; 276203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia isCompleteNumber = false; 277372bff8dd464574d36737d47e495cad14346653cShaopeng Jia isExpectingCountryCallingCode = false; 278df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia possibleFormats.clear(); 279203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia shouldAddSpaceAfterNationalPrefix = false; 280bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia if (!currentMetadata.equals(defaultMetadata)) { 281bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia currentMetadata = getMetadataForRegion(defaultCountry); 2821524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 2831524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 2841524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 285df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia /** 286df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia * Formats a phone number on-the-fly as each digit is entered. 287df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia * 288df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia * @param nextChar the most recently entered digit of a phone number. Formatting characters are 289372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * allowed, but as soon as they are encountered this method formats the number as entered and 290372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * not "as you type" anymore. Full width digits and Arabic-indic digits are allowed, and will 291372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * be shown as they are. 292df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia * @return the partially formatted phone number. 293df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia */ 2944b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia public String inputDigit(char nextChar) { 295df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia currentOutput = inputDigitWithOptionToRememberPosition(nextChar, false); 296df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return currentOutput; 2974b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia } 2984b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia 2991524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia /** 300372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * Same as {@link #inputDigit}, but remembers the position where {@code nextChar} is inserted, so 301372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * that it can be retrieved later by using {@link #getRememberedPosition}. The remembered 302372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * position will be automatically adjusted if additional formatting characters are later 303372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * inserted/removed in front of {@code nextChar}. 3041524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia */ 3054b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia public String inputDigitAndRememberPosition(char nextChar) { 306df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia currentOutput = inputDigitWithOptionToRememberPosition(nextChar, true); 307df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return currentOutput; 3084b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia } 3094b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia 31052699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia @SuppressWarnings("fallthrough") 3114b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia private String inputDigitWithOptionToRememberPosition(char nextChar, boolean rememberPosition) { 3121524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia accruedInput.append(nextChar); 3134b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia if (rememberPosition) { 314df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia originalPosition = accruedInput.length(); 3154b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia } 316f7e0224b862054893f28d2736b3f6804d9935886Shaopeng Jia // We do formatting on-the-fly only when each character entered is either a digit, or a plus 31716b56da4e787a614d16bedcd02b5086d40efbbdbShaopeng Jia // sign (accepted at the start of the number only). 31816b56da4e787a614d16bedcd02b5086d40efbbdbShaopeng Jia if (!isDigitOrLeadingPlusSign(nextChar)) { 3191524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia ableToFormat = false; 320ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia inputHasFormatting = true; 321ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia } else { 322ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia nextChar = normalizeAndAccrueDigitsAndPlusSign(nextChar, rememberPosition); 3231524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 3241524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia if (!ableToFormat) { 325ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // When we are unable to format because of reasons other than that formatting chars have been 326ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // entered, it can be due to really long IDDs or NDDs. If that is the case, we might be able 327ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // to do formatting again after extracting them. 328ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia if (inputHasFormatting) { 329ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia return accruedInput.toString(); 330ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia } else if (attemptToExtractIdd()) { 331ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia if (attemptToExtractCountryCallingCode()) { 332ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia return attemptToChoosePatternWithPrefixExtracted(); 333ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia } 334ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia } else if (ableToExtractLongerNdd()) { 335ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // Add an additional space to separate long NDD and national significant number for 336203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // readability. We don't set shouldAddSpaceAfterNationalPrefix to true, since we don't want 337203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // this to change later when we choose formatting templates. 338203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia prefixBeforeNationalNumber.append(SEPARATOR_BEFORE_NATIONAL_NUMBER); 339ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia return attemptToChoosePatternWithPrefixExtracted(); 340ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia } 3411524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia return accruedInput.toString(); 3421524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 3431524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 344df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // We start to attempt to format only when at least MIN_LEADING_DIGITS_LENGTH digits (the plus 345df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // sign is counted as a digit as well for this purpose) have been entered. 3461524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia switch (accruedInputWithoutFormatting.length()) { 347372bff8dd464574d36737d47e495cad14346653cShaopeng Jia case 0: 3481524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia case 1: 3491524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia case 2: 350df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return accruedInput.toString(); 3511524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia case 3: 352df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (attemptToExtractIdd()) { 353372bff8dd464574d36737d47e495cad14346653cShaopeng Jia isExpectingCountryCallingCode = true; 354ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia } else { // No IDD or plus sign is found, might be entering in national format. 355b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia extractedNationalPrefix = removeNationalPrefixFromNationalNumber(); 356df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return attemptToChooseFormattingPattern(); 357df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 358ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia default: 359372bff8dd464574d36737d47e495cad14346653cShaopeng Jia if (isExpectingCountryCallingCode) { 360372bff8dd464574d36737d47e495cad14346653cShaopeng Jia if (attemptToExtractCountryCallingCode()) { 361372bff8dd464574d36737d47e495cad14346653cShaopeng Jia isExpectingCountryCallingCode = false; 362df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 363df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return prefixBeforeNationalNumber + nationalNumber.toString(); 364df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 365df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (possibleFormats.size() > 0) { // The formatting pattern is already chosen. 366df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia String tempNationalNumber = inputDigitHelper(nextChar); 367df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // See if the accrued digits can be formatted properly already. If not, use the results 368df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // from inputDigitHelper, which does formatting based on the formatting pattern chosen. 369df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia String formattedNumber = attemptToFormatAccruedDigits(); 370df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (formattedNumber.length() > 0) { 371df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return formattedNumber; 372df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 373df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia narrowDownPossibleFormats(nationalNumber.toString()); 374df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (maybeCreateNewTemplate()) { 375df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return inputAccruedNationalNumber(); 376df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 3770b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia return ableToFormat 378203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia ? appendNationalNumber(tempNationalNumber) 379f3c6df010e7bc8ead25ba577ae09474b70d08adcShaopeng Jia : accruedInput.toString(); 3801524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } else { 381df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return attemptToChooseFormattingPattern(); 3821524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 3831524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 3841524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 3851524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 386ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia private String attemptToChoosePatternWithPrefixExtracted() { 387ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia ableToFormat = true; 388ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia isExpectingCountryCallingCode = false; 389ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia possibleFormats.clear(); 390ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia return attemptToChooseFormattingPattern(); 391ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia } 392ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia 393b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia // @VisibleForTesting 394b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia String getExtractedNationalPrefix() { 395b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia return extractedNationalPrefix; 396b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia } 397b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia 398ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // Some national prefixes are a substring of others. If extracting the shorter NDD doesn't result 399ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // in a number we can format, we try to see if we can extract a longer version here. 400ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia private boolean ableToExtractLongerNdd() { 401b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia if (extractedNationalPrefix.length() > 0) { 402ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // Put the extracted NDD back to the national number before attempting to extract a new NDD. 403b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia nationalNumber.insert(0, extractedNationalPrefix); 404ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // Remove the previously extracted NDD from prefixBeforeNationalNumber. We cannot simply set 40577aadd284847681bd66af639636c2fa43e418c2bShaopeng Jia // it to empty string because people sometimes incorrectly enter national prefix after the 40677aadd284847681bd66af639636c2fa43e418c2bShaopeng Jia // country code, e.g. +44 (0)20-1234-5678. 407b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia int indexOfPreviousNdd = prefixBeforeNationalNumber.lastIndexOf(extractedNationalPrefix); 408ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia prefixBeforeNationalNumber.setLength(indexOfPreviousNdd); 409ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia } 410b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia return !extractedNationalPrefix.equals(removeNationalPrefixFromNationalNumber()); 411ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia } 412ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia 41316b56da4e787a614d16bedcd02b5086d40efbbdbShaopeng Jia private boolean isDigitOrLeadingPlusSign(char nextChar) { 41416b56da4e787a614d16bedcd02b5086d40efbbdbShaopeng Jia return Character.isDigit(nextChar) || 41516b56da4e787a614d16bedcd02b5086d40efbbdbShaopeng Jia (accruedInput.length() == 1 && 41616b56da4e787a614d16bedcd02b5086d40efbbdbShaopeng Jia PhoneNumberUtil.PLUS_CHARS_PATTERN.matcher(Character.toString(nextChar)).matches()); 41716b56da4e787a614d16bedcd02b5086d40efbbdbShaopeng Jia } 41816b56da4e787a614d16bedcd02b5086d40efbbdbShaopeng Jia 419203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia /** 420203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * Check to see if there is an exact pattern match for these digits. If so, we should use this 421203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * instead of any other formatting template whose leadingDigitsPattern also matches the input. 422203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia */ 423df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia String attemptToFormatAccruedDigits() { 424203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia for (NumberFormat numberFormat : possibleFormats) { 425203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia Matcher m = regexCache.getPatternForRegex(numberFormat.getPattern()).matcher(nationalNumber); 426df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (m.matches()) { 427203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia shouldAddSpaceAfterNationalPrefix = 428203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia NATIONAL_PREFIX_SEPARATORS_PATTERN.matcher( 429203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia numberFormat.getNationalPrefixFormattingRule()).find(); 430203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia String formattedNumber = m.replaceAll(numberFormat.getFormat()); 431203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia return appendNationalNumber(formattedNumber); 432df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 4330b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia } 434df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return ""; 4350b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia } 4360b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia 4370b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia /** 4380b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia * Returns the current position in the partially formatted phone number of the character which was 439372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * previously passed in as the parameter of {@link #inputDigitAndRememberPosition}. 4400b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia */ 4410b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia public int getRememberedPosition() { 442df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (!ableToFormat) { 443df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return originalPosition; 444df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 44552699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia int accruedInputIndex = 0, currentOutputIndex = 0; 446372bff8dd464574d36737d47e495cad14346653cShaopeng Jia while (accruedInputIndex < positionToRemember && currentOutputIndex < currentOutput.length()) { 447df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (accruedInputWithoutFormatting.charAt(accruedInputIndex) == 448df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia currentOutput.charAt(currentOutputIndex)) { 449df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia accruedInputIndex++; 450df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 451372bff8dd464574d36737d47e495cad14346653cShaopeng Jia currentOutputIndex++; 452df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 453df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return currentOutputIndex; 4540b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia } 4550b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia 456203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia /** 457203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * Combines the national number with any prefix (IDD/+ and country code or national prefix) that 458203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * was collected. A space will be inserted between them if the current formatting template 459203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * indicates this to be suitable. 460203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia */ 461203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia private String appendNationalNumber(String nationalNumber) { 462203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia int prefixBeforeNationalNumberLength = prefixBeforeNationalNumber.length(); 463203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia if (shouldAddSpaceAfterNationalPrefix && prefixBeforeNationalNumberLength > 0 && 464203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia prefixBeforeNationalNumber.charAt(prefixBeforeNationalNumberLength - 1) 465203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia != SEPARATOR_BEFORE_NATIONAL_NUMBER) { 466203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // We want to add a space after the national prefix if the national prefix formatting rule 467203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // indicates that this would normally be done, with the exception of the case where we already 468203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // appended a space because the NDD was surprisingly long. 469203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia return new String(prefixBeforeNationalNumber) + SEPARATOR_BEFORE_NATIONAL_NUMBER 470203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia + nationalNumber; 471203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia } else { 472203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia return prefixBeforeNationalNumber + nationalNumber; 473203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia } 474203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia } 475203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia 476203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia /** 477203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * Attempts to set the formatting template and returns a string which contains the formatted 478203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * version of the digits entered so far. 479203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia */ 480df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private String attemptToChooseFormattingPattern() { 481bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia // We start to attempt to format only when at least MIN_LEADING_DIGITS_LENGTH digits of national 482df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia // number (excluding national prefix) have been entered. 483df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (nationalNumber.length() >= MIN_LEADING_DIGITS_LENGTH) { 484df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia getAvailableFormats(nationalNumber.substring(0, MIN_LEADING_DIGITS_LENGTH)); 485bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia // See if the accrued digits can be formatted properly already. 486bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia String formattedNumber = attemptToFormatAccruedDigits(); 487bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia if (formattedNumber.length() > 0) { 488bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia return formattedNumber; 489bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia } 49096a7214cdabf08f53f5b1a560304601c9f65e0b9Shaopeng Jia return maybeCreateNewTemplate() ? inputAccruedNationalNumber() : accruedInput.toString(); 4911524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } else { 492203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia return appendNationalNumber(nationalNumber.toString()); 4931524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 4941524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 4951524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 496203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia /** 497203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * Invokes inputDigitHelper on each digit of the national number accrued, and returns a formatted 498203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * string in the end. 499203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia */ 500df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private String inputAccruedNationalNumber() { 5011524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia int lengthOfNationalNumber = nationalNumber.length(); 5021524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia if (lengthOfNationalNumber > 0) { 5034b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia String tempNationalNumber = ""; 5044b7846722d1a5acb0577b07e98324f744f5e7942Shaopeng Jia for (int i = 0; i < lengthOfNationalNumber; i++) { 505df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia tempNationalNumber = inputDigitHelper(nationalNumber.charAt(i)); 5061524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 507203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia return ableToFormat ? appendNationalNumber(tempNationalNumber) : accruedInput.toString(); 5081524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } else { 5091524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia return prefixBeforeNationalNumber.toString(); 5101524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 5111524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 5121524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 513203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia /** 514203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * Returns true if the current country is a NANPA country and the national number begins with 515203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia * the national prefix. 516203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia */ 517203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia private boolean isNanpaNumberWithNationalPrefix() { 518203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // For NANPA numbers beginning with 1[2-9], treat the 1 as the national prefix. The reason is 519203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // that national significant numbers in NANPA always start with [2-9] after the national prefix. 520203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // Numbers beginning with 1[01] can only be short/emergency numbers, which don't need the 521203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia // national prefix. 522bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia return (currentMetadata.getCountryCode() == 1) && (nationalNumber.charAt(0) == '1') && 523203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia (nationalNumber.charAt(1) != '0') && (nationalNumber.charAt(1) != '1'); 524203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia } 525203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia 526ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia // Returns the national prefix extracted, or an empty string if it is not present. 527ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia private String removeNationalPrefixFromNationalNumber() { 5281524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia int startOfNationalNumber = 0; 529203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia if (isNanpaNumberWithNationalPrefix()) { 53094c2440dc41689b7d9c169edf5089eeebf7527d7Shaopeng Jia startOfNationalNumber = 1; 531203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia prefixBeforeNationalNumber.append('1').append(SEPARATOR_BEFORE_NATIONAL_NUMBER); 532203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia isCompleteNumber = true; 533bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia } else if (currentMetadata.hasNationalPrefixForParsing()) { 534372bff8dd464574d36737d47e495cad14346653cShaopeng Jia Pattern nationalPrefixForParsing = 535bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia regexCache.getPatternForRegex(currentMetadata.getNationalPrefixForParsing()); 5361524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia Matcher m = nationalPrefixForParsing.matcher(nationalNumber); 537bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia // Since some national prefix patterns are entirely optional, check that a national prefix 538bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia // could actually be extracted. 539bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia if (m.lookingAt() && m.end() > 0) { 540f59ccfca9dd02c4e3cf3e06b5cf184a8d0e67626Shaopeng Jia // When the national prefix is detected, we use international formatting rules instead of 541f59ccfca9dd02c4e3cf3e06b5cf184a8d0e67626Shaopeng Jia // national ones, because national formatting rules could contain local formatting rules 542f59ccfca9dd02c4e3cf3e06b5cf184a8d0e67626Shaopeng Jia // for numbers entered without area code. 543203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia isCompleteNumber = true; 5441524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia startOfNationalNumber = m.end(); 5451524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia prefixBeforeNationalNumber.append(nationalNumber.substring(0, startOfNationalNumber)); 5461524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 5471524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 548ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia String nationalPrefix = nationalNumber.substring(0, startOfNationalNumber); 5491524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia nationalNumber.delete(0, startOfNationalNumber); 550ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia return nationalPrefix; 5511524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 5521524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 5531524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia /** 554df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia * Extracts IDD and plus sign to prefixBeforeNationalNumber when they are available, and places 555df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia * the remaining input into nationalNumber. 5561524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia * 557df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia * @return true when accruedInputWithoutFormatting begins with the plus sign or valid IDD for 558df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia * defaultCountry. 5591524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia */ 560df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private boolean attemptToExtractIdd() { 561372bff8dd464574d36737d47e495cad14346653cShaopeng Jia Pattern internationalPrefix = 562372bff8dd464574d36737d47e495cad14346653cShaopeng Jia regexCache.getPatternForRegex("\\" + PhoneNumberUtil.PLUS_SIGN + "|" + 563bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia currentMetadata.getInternationalPrefix()); 5641524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia Matcher iddMatcher = internationalPrefix.matcher(accruedInputWithoutFormatting); 5651524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia if (iddMatcher.lookingAt()) { 566203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia isCompleteNumber = true; 567372bff8dd464574d36737d47e495cad14346653cShaopeng Jia int startOfCountryCallingCode = iddMatcher.end(); 568df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia nationalNumber.setLength(0); 569372bff8dd464574d36737d47e495cad14346653cShaopeng Jia nationalNumber.append(accruedInputWithoutFormatting.substring(startOfCountryCallingCode)); 570ca1e43d6e1fac07c7fc29c66c7da1fa9d7cf50f2Shaopeng Jia prefixBeforeNationalNumber.setLength(0); 571df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia prefixBeforeNationalNumber.append( 572372bff8dd464574d36737d47e495cad14346653cShaopeng Jia accruedInputWithoutFormatting.substring(0, startOfCountryCallingCode)); 573df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (accruedInputWithoutFormatting.charAt(0) != PhoneNumberUtil.PLUS_SIGN) { 574203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia prefixBeforeNationalNumber.append(SEPARATOR_BEFORE_NATIONAL_NUMBER); 575df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 576df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return true; 577df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 578df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return false; 579df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 580df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia 581df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia /** 582372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * Extracts the country calling code from the beginning of nationalNumber to 583372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * prefixBeforeNationalNumber when they are available, and places the remaining input into 584372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * nationalNumber. 585df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia * 586372bff8dd464574d36737d47e495cad14346653cShaopeng Jia * @return true when a valid country calling code can be found. 587df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia */ 588372bff8dd464574d36737d47e495cad14346653cShaopeng Jia private boolean attemptToExtractCountryCallingCode() { 589f59ccfca9dd02c4e3cf3e06b5cf184a8d0e67626Shaopeng Jia if (nationalNumber.length() == 0) { 590f59ccfca9dd02c4e3cf3e06b5cf184a8d0e67626Shaopeng Jia return false; 591f59ccfca9dd02c4e3cf3e06b5cf184a8d0e67626Shaopeng Jia } 592372bff8dd464574d36737d47e495cad14346653cShaopeng Jia StringBuilder numberWithoutCountryCallingCode = new StringBuilder(); 593372bff8dd464574d36737d47e495cad14346653cShaopeng Jia int countryCode = phoneUtil.extractCountryCode(nationalNumber, numberWithoutCountryCallingCode); 594f59ccfca9dd02c4e3cf3e06b5cf184a8d0e67626Shaopeng Jia if (countryCode == 0) { 595f59ccfca9dd02c4e3cf3e06b5cf184a8d0e67626Shaopeng Jia return false; 596f59ccfca9dd02c4e3cf3e06b5cf184a8d0e67626Shaopeng Jia } 597372bff8dd464574d36737d47e495cad14346653cShaopeng Jia nationalNumber.setLength(0); 598372bff8dd464574d36737d47e495cad14346653cShaopeng Jia nationalNumber.append(numberWithoutCountryCallingCode); 599372bff8dd464574d36737d47e495cad14346653cShaopeng Jia String newRegionCode = phoneUtil.getRegionCodeForCountryCode(countryCode); 600528b0d12a556ff0c2d16f99d56fcdd62657f433cShaopeng Jia if (PhoneNumberUtil.REGION_CODE_FOR_NON_GEO_ENTITY.equals(newRegionCode)) { 601bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia currentMetadata = phoneUtil.getMetadataForNonGeographicalRegion(countryCode); 602528b0d12a556ff0c2d16f99d56fcdd62657f433cShaopeng Jia } else if (!newRegionCode.equals(defaultCountry)) { 603bb78ce92eae2d5de9aa06b27ed3b87bc496c79eeShaopeng Jia currentMetadata = getMetadataForRegion(newRegionCode); 604372bff8dd464574d36737d47e495cad14346653cShaopeng Jia } 605372bff8dd464574d36737d47e495cad14346653cShaopeng Jia String countryCodeString = Integer.toString(countryCode); 606203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia prefixBeforeNationalNumber.append(countryCodeString).append(SEPARATOR_BEFORE_NATIONAL_NUMBER); 607b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia // When we have successfully extracted the IDD, the previously extracted NDD should be cleared 608b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia // because it is no longer valid. 609b03a14984ad9b0d8b88337ca714cb831233b99c3Shaopeng Jia extractedNationalPrefix = ""; 6101524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia return true; 6111524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 6121524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 6131524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // Accrues digits and the plus sign to accruedInputWithoutFormatting for later use. If nextChar 6141524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // contains a digit in non-ASCII format (e.g. the full-width version of digits), it is first 6151524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia // normalized to the ASCII version. The return value is nextChar itself, or its normalized 616372bff8dd464574d36737d47e495cad14346653cShaopeng Jia // version, if nextChar is a digit in non-ASCII format. This method assumes its input is either a 617372bff8dd464574d36737d47e495cad14346653cShaopeng Jia // digit or the plus sign. 618df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private char normalizeAndAccrueDigitsAndPlusSign(char nextChar, boolean rememberPosition) { 619d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia char normalizedChar; 6201524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia if (nextChar == PhoneNumberUtil.PLUS_SIGN) { 621d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia normalizedChar = nextChar; 6221524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia accruedInputWithoutFormatting.append(nextChar); 623372bff8dd464574d36737d47e495cad14346653cShaopeng Jia } else { 624d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia int radix = 10; 625d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia normalizedChar = Character.forDigit(Character.digit(nextChar, radix), radix); 626d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia accruedInputWithoutFormatting.append(normalizedChar); 627d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia nationalNumber.append(normalizedChar); 6281524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 629df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia if (rememberPosition) { 630df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia positionToRemember = accruedInputWithoutFormatting.length(); 631df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia } 632d1db4c508088ac27cb0815a222cf2600f16ad5b9Shaopeng Jia return normalizedChar; 6331524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 6341524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia 635df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia private String inputDigitHelper(char nextChar) { 636203cf688f8d56e2c1f9828801b113110465f39a7Shaopeng Jia Matcher digitMatcher = DIGIT_PATTERN.matcher(formattingTemplate); 6371524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia if (digitMatcher.find(lastMatchPosition)) { 638df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia String tempTemplate = digitMatcher.replaceFirst(Character.toString(nextChar)); 639df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia formattingTemplate.replace(0, tempTemplate.length(), tempTemplate); 6401524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia lastMatchPosition = digitMatcher.start(); 641df19cbfb8a1e8720bae76bb763ab29622e057c42Shaopeng Jia return formattingTemplate.substring(0, lastMatchPosition + 1); 64252699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia } else { 64352699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia if (possibleFormats.size() == 1) { 64452699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia // More digits are entered than we could handle, and there are no other valid patterns to 64552699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia // try. 64652699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia ableToFormat = false; 64752699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia } // else, we just reset the formatting pattern. 64852699e08e855fb0957944b4e73358ad9e0007c0cShaopeng Jia currentFormattingPattern = ""; 6490b3c1fb05c01bc853ad927356eee743b62a8121bShaopeng Jia return accruedInput.toString(); 6501524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 6511524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia } 6521524ca8c53cd2c3adee0bb2e2b95a93fee976862Shaopeng Jia} 653