code: /* LanguageTool, a natural language style checker
   * Copyright (C) 2014 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.dev.eval;
  
  import org.languagetool.JLanguageTool;
  import org.languagetool.Language;
  import org.languagetool.Languages;
  import org.languagetool.rules.Rule;
  import org.languagetool.rules.RuleMatch;
  
  import java.io.*;
  import java.util.List;
  
  /**
   * Simple command line tool to compare spell checker suggestions. Run it,
   * change the source code, run it again and diff the output to see what
   * has changed.
   * @since 2.7
   */
  public class SpellCheckEvaluation {
    
    private static final int MAX_SUGGESTIONS = 5;
  
    private void run(Language language, File file) throws IOException {
      JLanguageTool lt = getLanguageToolForSpellCheck(language);
      checkFile(file, lt);
    }
  
    private JLanguageTool getLanguageToolForSpellCheck(Language language) {
      JLanguageTool lt = new JLanguageTool(language);
      for (Rule rule : lt.getAllActiveRules()) {
        if (!rule.isDictionaryBasedSpellingRule()) {
          lt.disableRule(rule.getId());
        }
      }
      return lt;
    }
  
    private void checkFile(File file, JLanguageTool lt) throws IOException {
      try (
        FileInputStream fis = new FileInputStream(file);
        InputStreamReader reader = new InputStreamReader(fis, "utf-8");
        BufferedReader br = new BufferedReader(reader)
      ) {
        String line;
        while ((line = br.readLine()) != null) {
          List<RuleMatch> matches = lt.check(line);
          for (RuleMatch match : matches) {
            String covered = line.substring(match.getFromPos(), match.getToPos());
            List<String> suggestions = match.getSuggestedReplacements();
            List<String> limitedSuggestions = suggestions.subList(0, Math.min(MAX_SUGGESTIONS, suggestions.size()));
            System.out.println(covered + ": " + limitedSuggestions);
          }
        }
      }
    }
  
    public static void main(String[] args) throws IOException {
      if (args.length != 2) {
        System.out.println("Usage: " + SpellCheckEvaluation.class.getSimpleName() + " <langCode> <textFile>");
        System.exit(1);
      }
      SpellCheckEvaluation eval = new SpellCheckEvaluation();
      eval.run(Languages.getLanguageForShortCode(args[0]), new File(args[1]));
    }
  }
  