| /* |
| * 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.ignite.cli.config.ini; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * INI file parser. |
| */ |
| public class IniParser { |
| /** |
| * Section name for properties outside any section. |
| */ |
| public static final String NO_SECTION = "NO_SECTION"; |
| |
| private static final Pattern SECTION_PATTERN = Pattern.compile("\\s*\\[([^]]*)\\]\\s*"); |
| private static final Pattern KEY_VALUE_PATTER = Pattern.compile("\\s*([^=]*)=(.*)"); |
| private static final Pattern COMMENT_LINE = Pattern.compile("^[;|#].*"); |
| |
| |
| /** |
| * Parse incoming input string as {@link Map}. |
| * |
| * @param inputStream of INI file. |
| * @return Map representation of INI file. |
| * @throws IOException when parsing failed. |
| */ |
| public Map<String, IniSection> parse(InputStream inputStream) throws IOException { |
| if (inputStream == null) { |
| throw new FileNotFoundException("inputStream is null"); |
| } |
| |
| try (BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream))) { |
| return parseIniFile(bufferedReader); |
| } |
| } |
| |
| /** |
| * Parse incoming file as {@link Map}. |
| * |
| * @param file INI file. |
| * @return Map representation of INI file. |
| * @throws IOException when parsing failed. |
| */ |
| public Map<String, IniSection> parse(File file) throws IOException { |
| try (FileInputStream input = new FileInputStream(file)) { |
| return parse(input); |
| } |
| } |
| |
| private Map<String, IniSection> parseIniFile(BufferedReader bufferedReader) throws IOException { |
| Map<String, IniSection> map = new LinkedHashMap<>(); |
| IniSection currentSection = new IniSection(NO_SECTION); |
| map.put(NO_SECTION, currentSection); |
| String line; |
| while ((line = bufferedReader.readLine()) != null) { |
| |
| Matcher commentMatcher = COMMENT_LINE.matcher(line); |
| if (commentMatcher.matches()) { |
| continue; |
| } |
| |
| Matcher sectionMather = SECTION_PATTERN.matcher(line); |
| if (sectionMather.matches()) { |
| String sectionName = sectionMather.group(1).trim(); |
| currentSection = new IniSection(sectionName); |
| map.put(sectionName, currentSection); |
| continue; |
| } |
| |
| Matcher keyValueMatcher = KEY_VALUE_PATTER.matcher(line); |
| if (keyValueMatcher.matches()) { |
| String key = keyValueMatcher.group(1).trim(); |
| String value = keyValueMatcher.group(2).trim(); |
| currentSection.setProperty(key, value); |
| } |
| } |
| return map; |
| } |
| } |