| /* |
| * 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.nifi.minifi.bootstrap.util; |
| |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.util.AbstractMap; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.LinkedHashSet; |
| import java.util.Map; |
| import java.util.Properties; |
| import java.util.Set; |
| import java.util.stream.Collectors; |
| |
| public class OrderedProperties extends Properties { |
| private final Map<String, String> textBeforeMap = new HashMap<>(); |
| private final LinkedHashSet<Object> orderedKeys = new LinkedHashSet<>(); |
| |
| @Override |
| public synchronized Object put(Object key, Object value) { |
| orderedKeys.add(key); |
| return super.put(key, value); |
| } |
| |
| @Override |
| public synchronized Enumeration<Object> keys() { |
| return Collections.enumeration(orderedKeys.stream().filter(this::containsKey).collect(Collectors.toList())); |
| } |
| |
| @Override |
| public synchronized Set<Map.Entry<Object, Object>> entrySet() { |
| return orderedKeys.stream() |
| .map(k -> new AbstractMap.SimpleImmutableEntry<>(k, this.get(k))) |
| .collect(Collectors.toCollection(LinkedHashSet::new)); |
| } |
| |
| public synchronized Object setProperty(String key, String value, String textBefore) { |
| textBeforeMap.put(key, textBefore); |
| return setProperty(key, value); |
| } |
| |
| @Override |
| public synchronized void store(OutputStream out, String comments) throws IOException { |
| ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); |
| super.store(byteArrayOutputStream, comments); |
| |
| try(BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(new ByteArrayInputStream(byteArrayOutputStream.toByteArray()), "8859_1")); |
| BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(out, "8859_1"))) { |
| String line; |
| while ((line = bufferedReader.readLine()) != null) { |
| int equalsIndex = line.indexOf('='); |
| if (equalsIndex != -1) { |
| String textBefore = textBeforeMap.get(line.substring(0, equalsIndex)); |
| if (textBefore != null) { |
| bufferedWriter.write(textBefore); |
| bufferedWriter.newLine(); |
| } |
| } |
| bufferedWriter.write(line); |
| bufferedWriter.newLine(); |
| } |
| } |
| } |
| } |