1 /* 2 * Copyright (C) 2012 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.android.i18n.phonenumbers; 18 19 import com.android.i18n.phonenumbers.Phonemetadata.PhoneMetadata; 20 import com.android.i18n.phonenumbers.Phonemetadata.PhoneMetadataCollection; 21 22 import java.io.IOException; 23 import java.io.InputStream; 24 import java.io.ObjectInputStream; 25 import java.util.Collections; 26 import java.util.HashMap; 27 import java.util.Iterator; 28 import java.util.Map; 29 import java.util.Set; 30 import java.util.logging.Level; 31 import java.util.logging.Logger; 32 33 /** 34 * Class encapsulating loading of PhoneNumber Metadata information. Currently this is used only for 35 * additional data files such as PhoneNumberAlternateFormats, but in the future it is envisaged it 36 * would handle the main metadata file (PhoneNumberMetaData.xml) as well. 37 * 38 * @author Lara Rennie 39 */ 40 class MetadataManager { 41 private static final String ALTERNATE_FORMATS_FILE_PREFIX = 42 "/com/android/i18n/phonenumbers/data/PhoneNumberAlternateFormatsProto"; 43 44 private static final Logger LOGGER = Logger.getLogger(MetadataManager.class.getName()); 45 46 private static final Map<Integer, PhoneMetadata> callingCodeToAlternateFormatsMap = 47 Collections.synchronizedMap(new HashMap<Integer, PhoneMetadata>()); 48 49 // A set of which country calling codes there are alternate format data for. If the set has an 50 // entry for a code, then there should be data for that code linked into the resources. 51 private static final Set<Integer> countryCodeSet = 52 AlternateFormatsCountryCodeSet.getCountryCodeSet(); 53 54 private MetadataManager() { 55 } 56 57 private static void close(InputStream in) { 58 if (in != null) { 59 try { 60 in.close(); 61 } catch (IOException e) { 62 LOGGER.log(Level.WARNING, e.toString()); 63 } 64 } 65 } 66 67 private static void loadMetadataFromFile(int countryCallingCode) { 68 InputStream source = PhoneNumberMatcher.class.getResourceAsStream( 69 ALTERNATE_FORMATS_FILE_PREFIX + "_" + countryCallingCode); 70 ObjectInputStream in = null; 71 try { 72 in = new ObjectInputStream(source); 73 PhoneMetadataCollection alternateFormats = new PhoneMetadataCollection(); 74 alternateFormats.readExternal(in); 75 for (PhoneMetadata metadata : alternateFormats.getMetadataList()) { 76 callingCodeToAlternateFormatsMap.put(metadata.getCountryCode(), metadata); 77 } 78 } catch (IOException e) { 79 LOGGER.log(Level.WARNING, e.toString()); 80 } finally { 81 close(in); 82 } 83 } 84 85 static PhoneMetadata getAlternateFormatsForCountry(int countryCallingCode) { 86 if (!countryCodeSet.contains(countryCallingCode)) { 87 return null; 88 } 89 synchronized (callingCodeToAlternateFormatsMap) { 90 if (!callingCodeToAlternateFormatsMap.containsKey(countryCallingCode)) { 91 loadMetadataFromFile(countryCallingCode); 92 } 93 } 94 return callingCodeToAlternateFormatsMap.get(countryCallingCode); 95 } 96 } 97
