package org.codehaus.mojo.clirr;
   
   /*
    * Copyright 2006 The Codehaus
    *
    * 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.
   */
  
  import net.sf.clirr.core.ClassFilter;
  import org.apache.bcel.classfile.JavaClass;
  import org.codehaus.plexus.util.SelectorUtils;
  
  /**
   * Filter classes by pattern sets.
   *
   * @author <a href="mailto:brett@apache.org">Brett Porter</a>
   */
  public class ClirrClassFilter
      implements ClassFilter
  {
      private final String[] excludes;
  
      private final String[] includes;
  
      private boolean alwaysTrue;
  
      public ClirrClassFilter( String[] includes, String[] excludes )
      {
          if ( excludes == null || excludes.length == 0 )
          {
              this.excludes = null;
          }
          else
          {
              this.excludes = (String[]) excludes.clone();
          }
  
          if ( includes == null || includes.length == 0 )
          {
              this.includes = new String[]{"**"};
  
              if ( excludes == null )
              {
                  alwaysTrue = true;
              }
          }
          else
          {
              this.includes = (String[]) includes.clone();
          }
      }
  
      public boolean isSelected( JavaClass javaClass )
      {
          boolean result = false;
          if ( alwaysTrue )
          {
              result = true;
          }
          else
          {
              String path = javaClass.getClassName().replace( '.', '/' );
              for ( int i = 0; i < includes.length && !result; i++ )
              {
                  result = SelectorUtils.matchPath( includes[i], path );
              }
  
              if ( excludes != null )
              {
                  for ( int i = 0; i < excludes.length && result; i++ )
                  {
                      result = !SelectorUtils.matchPath( excludes[i], path );
                  }
              }
          }
  
          return result;
      }
  }