| /* |
| * Copyright (C) 2022 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.google.i18n.phonenumbers.metadata.source; |
| |
| import java.util.regex.Pattern; |
| |
| /** |
| * {@link PhoneMetadataFileNameProvider} implementation which appends key as a suffix to the |
| * predefined metadata file name base. |
| */ |
| public final class MultiFileModeFileNameProvider implements PhoneMetadataFileNameProvider { |
| |
| private final String phoneMetadataFileNamePrefix; |
| private static final Pattern ALPHANUMERIC = Pattern.compile("^[\\p{L}\\p{N}]+$"); |
| |
| public MultiFileModeFileNameProvider(String phoneMetadataFileNameBase) { |
| this.phoneMetadataFileNamePrefix = phoneMetadataFileNameBase + "_"; |
| } |
| |
| @Override |
| public String getFor(Object key) { |
| String keyAsString = key.toString(); |
| if (!ALPHANUMERIC.matcher(keyAsString).matches()) { |
| throw new IllegalArgumentException("Invalid key: " + keyAsString); |
| } |
| return phoneMetadataFileNamePrefix + key; |
| } |
| } |