| /* |
| * 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.maven.bundlesupport; |
| |
| import java.io.StringReader; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.json.Json; |
| import javax.json.JsonArray; |
| import javax.json.JsonArrayBuilder; |
| import javax.json.JsonObject; |
| import javax.json.JsonObjectBuilder; |
| import javax.json.JsonReader; |
| import javax.json.JsonReaderFactory; |
| |
| public final class JsonSupport { |
| |
| /** Mime type for json response. */ |
| public static final String JSON_MIME_TYPE = "application/json"; |
| |
| private static final JsonReaderFactory JSON_READER_FACTORY; |
| static { |
| // allow comments in JSON files |
| Map<String,Object> jsonFactoryConfig = new HashMap<>(); |
| jsonFactoryConfig.put("org.apache.johnzon.supports-comments", true); |
| JSON_READER_FACTORY = Json.createReaderFactory(jsonFactoryConfig); |
| } |
| |
| private JsonSupport() { |
| // static methods only |
| } |
| |
| /** |
| * Parse String to JSON object. |
| * @param jsonString JSON string |
| * @return JSON object |
| */ |
| public static JsonObject parseObject(String jsonString) { |
| try (StringReader reader = new StringReader(jsonString); |
| JsonReader jsonReader = JSON_READER_FACTORY.createReader(reader)) { |
| return jsonReader.readObject(); |
| } |
| } |
| |
| /** |
| * Parse String to JSON array. |
| * @param jsonString JSON string |
| * @return JSON array |
| */ |
| public static JsonArray parseArray(String jsonString) { |
| try (StringReader reader = new StringReader(jsonString); |
| JsonReader jsonReader = JSON_READER_FACTORY.createReader(reader)) { |
| return jsonReader.readArray(); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static void accumulate(Map<String,Object> obj, String name, String value) { |
| Object current = obj.get(name); |
| if (current == null) { |
| obj.put(name, value); |
| } |
| else if (current instanceof List) { |
| List<String> array = new ArrayList<>((List<String>)current); |
| array.add(value); |
| obj.put(name, array); |
| } |
| else { |
| List<String> array = new ArrayList<>(); |
| array.add((String)current); |
| array.add(value); |
| obj.put(name, array); |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| public static JsonObject toJson(Map<String,Object> map) { |
| JsonObjectBuilder builder = Json.createObjectBuilder(); |
| for (Map.Entry<String,Object> entry : map.entrySet()) { |
| if (entry.getValue() instanceof Map) { |
| builder.add(entry.getKey(), toJson((Map<String,Object>)entry.getValue())); |
| } |
| else if (entry.getValue() instanceof List) { |
| JsonArrayBuilder array = Json.createArrayBuilder(); |
| for (String value : (List<String>)entry.getValue()) { |
| array.add(value); |
| } |
| builder.add(entry.getKey(), array.build()); |
| } |
| else { |
| builder.add(entry.getKey(), (String)entry.getValue()); |
| } |
| } |
| return builder.build(); |
| } |
| |
| } |