package org.apache.maven.profiles.activation;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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 java.util.Properties;
  import org.apache.maven.model.Activation;
  import org.apache.maven.model.ActivationProperty;
  import org.apache.maven.model.Profile;
  import org.codehaus.plexus.context.Context;
  import org.codehaus.plexus.context.ContextException;
  import org.codehaus.plexus.personality.plexus.lifecycle.phase.Contextualizable;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * SystemPropertyProfileActivator
   */
  @Deprecated
  public class SystemPropertyProfileActivator
      extends DetectedProfileActivator implements Contextualizable
  {
      private Properties properties;
  
      public void contextualize( Context context )
          throws ContextException
      {
          properties = (Properties) context.get( "SystemProperties" );
      }
  
      protected boolean canDetectActivation( Profile profile )
      {
          return profile.getActivation() != null && profile.getActivation().getProperty() != null;
      }
  
      public boolean isActive( Profile profile )
          throws ProfileActivationException
      {
          Activation activation = profile.getActivation();
  
          ActivationProperty property = activation.getProperty();
  
          if ( property != null )
          {
              String name = property.getName();
              boolean reverseName = false;
  
              if ( name == null )
              {
                  throw new ProfileActivationException( "The property name is required to activate the profile '"
                      + profile.getId() + "'" );
              }
  
              if ( name.startsWith( "!" ) )
              {
                  reverseName = true;
                  name = name.substring( 1 );
              }
  
              String sysValue = properties.getProperty( name );
  
              String propValue = property.getValue();
              if ( StringUtils.isNotEmpty( propValue ) )
              {
                  boolean reverseValue = false;
                  if ( propValue.startsWith( "!" ) )
                  {
                      reverseValue = true;
                      propValue = propValue.substring( 1 );
                  }
  
                  // we have a value, so it has to match the system value...
                  boolean result = propValue.equals( sysValue );
  
                  if ( reverseValue )
                  {
                      return !result;
                  }
                  else
                  {
                      return result;
                  }
              }
              else
             {
                 boolean result = StringUtils.isNotEmpty( sysValue );
 
                 if ( reverseName )
                 {
                     return !result;
                 }
                 else
                 {
                     return result;
                 }
             }
         }
 
         return false;
     }
 
 }