| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.sling.feature.analyser.task.impl; |
| |
| import java.io.StringReader; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.LinkedHashMap; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeSet; |
| |
| import javax.json.Json; |
| import javax.json.stream.JsonParser; |
| import javax.json.stream.JsonParser.Event; |
| |
| /** |
| * A "Sieve" data structure to check exported packages |
| */ |
| final class ApiRegions { |
| |
| private static final String NAME_KEY = "name"; |
| |
| private static final String EXPORTS_KEY = "exports"; |
| |
| static ApiRegions fromJson(String jsonRepresentation) { |
| ApiRegions apiRegions = new ApiRegions(); |
| |
| // pointers |
| Event event; |
| String region = null; |
| Collection<String> apis = null; |
| |
| JsonParser parser = Json.createParser(new StringReader(jsonRepresentation)); |
| while (parser.hasNext()) { |
| event = parser.next(); |
| if (Event.KEY_NAME == event) { |
| switch (parser.getString()) { |
| case NAME_KEY: |
| parser.next(); |
| region = parser.getString(); |
| break; |
| |
| case EXPORTS_KEY: |
| apis = new LinkedList<>(); |
| |
| // start array |
| parser.next(); |
| |
| while (parser.hasNext() && Event.VALUE_STRING == parser.next()) { |
| String api = parser.getString(); |
| // skip comments |
| if ('#' != api.charAt(0)) { |
| apis.add(api); |
| } |
| } |
| |
| break; |
| |
| default: |
| break; |
| } |
| } else if (Event.END_OBJECT == event) { |
| if (region != null && apis != null) { |
| apiRegions.add(region, apis); |
| } |
| |
| region = null; |
| apis = null; |
| } |
| } |
| |
| return apiRegions; |
| } |
| |
| // Use Linked Hash Map to keep the order of the regions as specified in the JSON |
| private final Map<String, Set<String>> apis = new LinkedHashMap<>(); |
| |
| ApiRegions() { |
| // it should not be directly instantiated outside this package |
| } |
| |
| void add(String region, Collection<String> exportedApis) { |
| apis.computeIfAbsent(region, k -> new TreeSet<>()).addAll(exportedApis); |
| } |
| |
| /** |
| * Return the regions in the order they were listed. |
| * @return The regions. |
| */ |
| List<String> getRegions() { |
| // As the regions are stored in a LinkedHashMap the order is preserved. |
| // So we can return the keys. |
| return new ArrayList<>(apis.keySet()); |
| } |
| |
| Set<String> getApis(String region) { |
| return apis.computeIfAbsent(region, k -> Collections.emptySet()); |
| } |
| |
| void remove(String packageName) { |
| apis.values().forEach(apis -> apis.remove(packageName)); |
| } |
| |
| boolean isEmpty() { |
| for (Set<String> packages : apis.values()) { |
| if (!packages.isEmpty()) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public String toString() { |
| return apis.toString().replace(',', '\n'); |
| } |
| } |