1 /*
2  * Copyright (C) 2014 The Libphonenumber Authors
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.google.i18n.phonenumbers.internal;
18 
19 import com.google.i18n.phonenumbers.Phonemetadata.PhoneNumberDesc;
20 import com.google.i18n.phonenumbers.RegexCache;
21 
22 import java.util.regex.Matcher;
23 
24 /**
25  * Implementation of the matcher API using the regular expressions in the PhoneNumberDesc
26  * proto message to match numbers.
27  */
28 public final class RegexBasedMatcher implements MatcherApi {
create()29   public static MatcherApi create() {
30     return new RegexBasedMatcher();
31   }
32 
33   private final RegexCache regexCache = new RegexCache(100);
34 
RegexBasedMatcher()35   private RegexBasedMatcher() {}
36 
37   // @Override
matchesNationalNumber(String nationalNumber, PhoneNumberDesc numberDesc, boolean allowPrefixMatch)38   public boolean matchesNationalNumber(String nationalNumber, PhoneNumberDesc numberDesc,
39       boolean allowPrefixMatch) {
40     Matcher nationalNumberPatternMatcher = regexCache.getPatternForRegex(
41         numberDesc.getNationalNumberPattern()).matcher(nationalNumber);
42     return nationalNumberPatternMatcher.matches()
43         || (allowPrefixMatch && nationalNumberPatternMatcher.lookingAt());
44   }
45 
46   // @Override
matchesPossibleNumber(String nationalNumber, PhoneNumberDesc numberDesc)47   public boolean matchesPossibleNumber(String nationalNumber, PhoneNumberDesc numberDesc) {
48     Matcher possibleNumberPatternMatcher = regexCache.getPatternForRegex(
49         numberDesc.getPossibleNumberPattern()).matcher(nationalNumber);
50     return possibleNumberPatternMatcher.matches();
51   }
52 }
53