| /* GENERATED SOURCE. DO NOT MODIFY. */ |
| /* |
| * Copyright (C) 2014 The Libphonenumber Authors |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.i18n.phonenumbers.internal; |
| |
| import com.android.i18n.phonenumbers.Phonemetadata.PhoneNumberDesc; |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * Implementation of the matcher API using the regular expressions in the PhoneNumberDesc |
| * proto message to match numbers. |
| * @hide This class is not part of the Android public SDK API |
| */ |
| public final class RegexBasedMatcher implements MatcherApi { |
| public static MatcherApi create() { |
| return new RegexBasedMatcher(); |
| } |
| |
| private final RegexCache regexCache = new RegexCache(100); |
| |
| private RegexBasedMatcher() {} |
| |
| // @Override |
| public boolean matchNationalNumber(CharSequence number, PhoneNumberDesc numberDesc, |
| boolean allowPrefixMatch) { |
| String nationalNumberPattern = numberDesc.getNationalNumberPattern(); |
| // We don't want to consider it a prefix match when matching non-empty input against an empty |
| // pattern. |
| if (nationalNumberPattern.length() == 0) { |
| return false; |
| } |
| return match(number, regexCache.getPatternForRegex(nationalNumberPattern), allowPrefixMatch); |
| } |
| |
| private static boolean match(CharSequence number, Pattern pattern, boolean allowPrefixMatch) { |
| Matcher matcher = pattern.matcher(number); |
| if (!matcher.lookingAt()) { |
| return false; |
| } else { |
| return (matcher.matches()) ? true : allowPrefixMatch; |
| } |
| } |
| } |