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dependency analysis tool based on bytecode inspection
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/*
 * Copyright (c) 2003-2008, Franz-Josef Elmer, All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 * - Redistributions of source code must retain the above copyright notice, 
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, 
 *   this list of conditions and the following disclaimer in the documentation 
 *   and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */
package classycle.dependency;

/**
 * @author  Franz-Josef Elmer
 */
public class DefaultResultRenderer extends ResultRenderer
{
  private static final String SHOW = DependencyDefinitionParser.SHOW_KEY_WORD + ' ';
  private static final PreferenceFactory FACTORY = new DefaultPreferenceFactory();

  private boolean _allResults;
  
  public PreferenceFactory getPreferenceFactory()
  {
    return FACTORY;
  }

  public void considerPreference(Preference preference)
  {
    if (preference == DefaultPreferenceFactory.ONLY_SHORTEST_PATHS)
    {
      _shortestPaths = true;
    } else if (preference == DefaultPreferenceFactory.ALL_PATHS)
    {
      _shortestPaths = false;
    } else if (preference == DefaultPreferenceFactory.ALL_RESULTS)
    {
      _allResults = true;
    } else if (preference == DefaultPreferenceFactory.ONLY_FAILURES)
    {
      _allResults = false;
    }
  }

  public Result getDescriptionOfCurrentPreferences()
  {
    StringBuffer buffer = new StringBuffer(SHOW);
    buffer.append(_shortestPaths 
                      ? DefaultPreferenceFactory.ONLY_SHORTEST_PATHS.getKey() 
                      : DefaultPreferenceFactory.ALL_PATHS.getKey())
          .append(' ')
          .append(_allResults ? DefaultPreferenceFactory.ALL_RESULTS.getKey()
                              : DefaultPreferenceFactory.ONLY_FAILURES.getKey())
          .append('\n');
    
    return new TextResult(new String(buffer));
  }

  public String render(Result result)
  {
    StringBuffer buffer = new StringBuffer();
    render(buffer, result);
    return new String(buffer);
  }
  
  private void render(StringBuffer buffer, Result result)
  {
    if (result instanceof ResultContainer) 
    {
      ResultContainer results = (ResultContainer) result;
      for (int i = 0, n = results.getNumberOfResults(); i < n; i++)
      {
        render(buffer, results.getResult(i));
      }
    } else if (_allResults || result.isOk() == false)
    {
      buffer.append(result.toString());
    }
  }

}