code: /* LanguageTool, a natural language style checker 
   * Copyright (C) 2013 Daniel Naber (http://www.danielnaber.de)
   * 
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
   * USA
   */
  package org.languagetool.tools;
  
  import morfologik.tools.DictDecompile;
  import morfologik.tools.FSADecompile;
  
  import java.io.BufferedWriter;
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.OutputStreamWriter;
  import java.io.Writer;
  import java.util.Arrays;
  import java.util.Scanner;
  import java.util.regex.Pattern;
  
  import org.apache.commons.cli.CommandLine;
  
  /**
   * Print the contents of a Morfologik binary dictionary to STDOUT.
   */
  final class DictionaryExporter extends DictionaryBuilder {
  
    protected DictionaryExporter(File infoFile) throws IOException {
      super(infoFile);
    }
    
    public static void main(String[] args) throws Exception {
      BuilderOptions builderOptions = new BuilderOptions();
      builderOptions.addOption(BuilderOptions.INPUT_OPTION, true, 
          "binary Morfologik dictionary file (.dict)", true);
      builderOptions.addOption(BuilderOptions.INFO_OPTION, true, 
          BuilderOptions.INFO_HELP, true);
      CommandLine cmdLine = builderOptions.parseArguments(args, DictionaryExporter.class);
      
      File binaryDictFile = new File(cmdLine.getOptionValue(BuilderOptions.INPUT_OPTION));
      File infoFile = new File(cmdLine.getOptionValue(BuilderOptions.INFO_OPTION));
      
      DictionaryExporter builder = new DictionaryExporter(infoFile);
      builder.setOutputFilename(cmdLine.getOptionValue(BuilderOptions.OUTPUT_OPTION));
  
      builder.build(binaryDictFile);
    }
    
    private void build(File binaryDictFile) throws RuntimeException, IOException {
      String inputPath = binaryDictFile.toString();
      File tmpOutputFile = File.createTempFile(
          DictionaryExporter.class.getSimpleName() + "_separator", ".txt");
      tmpOutputFile.deleteOnExit();
      
      if (inputPath.contains("hunspell") || inputPath.contains("spelling")) {
        String[] buildOptions = {
            "--exit", "false",
            "-i", binaryDictFile.toString(), 
            "-o", tmpOutputFile.toString()
        };
        System.out.println("Running Morfologik FSADecompile.main with these options: " + Arrays.toString(buildOptions));
        FSADecompile.main(buildOptions);      
      } else {
        String[] buildOptions = {"--exit", "false",
            "-i", binaryDictFile.toString(), 
            "-o", tmpOutputFile.toString()
        };
        System.out.println("Running Morfologik DictDecompile.main with these options: " + Arrays.toString(buildOptions));
        DictDecompile.main(buildOptions);
      }
      outputSeparatorToTab(tmpOutputFile);
      System.out.println("Done. The dictionary export has been written to " + getOutputFilename());
    }
    
    protected void outputSeparatorToTab(File inputFile) throws RuntimeException, IOException {
      File outputFile = new File(getOutputFilename());
      String separator = getOption("fsa.dict.separator");
      if (separator == null || separator.trim().isEmpty()) {
        throw new IOException(
            "A separator character (fsa.dict.separator) must be defined in the dictionary info file.");
      }
      boolean hasFrequency = isOptionTrue("fsa.dict.frequency-included");
      String encoding = getOption("fsa.dict.encoding");
      
      try (Scanner scanner = new Scanner(inputFile, encoding);
           Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outputFile), encoding))) {
        while (scanner.hasNextLine()) {
          String line = scanner.nextLine();
          String[] parts = line.split(Pattern.quote(separator));
          if (parts.length == 3) {
            if (hasFrequency) { // remove frequency data in the last byte
              parts[2] = parts[2].substring(0, parts[2].length() - 1);
            }
            out.write(parts[1] + "\t" + parts[0] + "\t" + parts[2] + "\n");
          } else if (parts.length == 2) {
  //          if (hasFrequency) {
  //            out.write(parts[1] + "\n");
  //          }
            out.write(parts[1] + "\t" + parts[0] + "\n");
          } else if (parts.length == 1) {
            out.write(parts[0] + "\n");
          } else {
            System.err
                .println("Invalid input, expected one, two or three columns separated with "
                    + separator + " in " + inputFile + ": " + line + " => ignoring");
          }
        }
      }
    }
  
  }
  