code: /*******************************************************************************
   * Copyright 2014 uniVocity Software Pty Ltd
   *
   * 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.univocity.articles.csvcomparison.parser;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  public class ParsersRegistry {
  
      private static List<AbstractParser> parsers = null;
  
      public static List<AbstractParser> getParsers() {
          if(parsers == null) {
              parsers = getAllParsers();
          }
          return parsers;
      }
  
      private static List<AbstractParser> getAllParsers() {
          // Get Parsers for current VM version
          final List<AbstractParser> parsers = new ArrayList<AbstractParser>(Parsers.list());
  
          // Also include Java 8 only parsers?
          final String javaVersion = System.getProperty("java.version");
          System.out.println("Detected Java version: " + javaVersion);
  
          if(javaVersion != null && javaVersion.startsWith("1.8.")) {
              System.out.println("Also enabling Java 8 only parsers!");
              parsers.addAll(getJava8OnlyParsers());
          }
  
          return Collections.unmodifiableList(parsers);
      }
  
      private static List<AbstractParser> getJava8OnlyParsers() {
          try {
              final Class<?> java8Parsers = Class.forName("com.univocity.articles.csvcomparison.parser8.Parsers");
              return (List<AbstractParser>) java8Parsers.getMethod("list").invoke(null);
          } catch (final LinkageError e) {
              throw new RuntimeException("Cannot get Java 8 Only parsers", e);
          } catch (final Exception e) {
              throw new RuntimeException("Cannot get Java 8 Only parsers", e);
          }
      }
  }
  