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.io.IOException;

 import org.apache.maven.model.Activation;

 import org.apache.maven.model.ActivationFile;

 import org.apache.maven.model.Profile;

 import org.codehaus.plexus.interpolation.EnvarBasedValueSource;

 import org.codehaus.plexus.interpolation.InterpolationException;

 import org.codehaus.plexus.interpolation.MapBasedValueSource;

 import org.codehaus.plexus.interpolation.RegexBasedInterpolator;

 import org.codehaus.plexus.util.FileUtils;

 import org.codehaus.plexus.util.StringUtils;

 public class FileProfileActivator

     extends DetectedProfileActivator

 {

     protected boolean canDetectActivation( Profile profile )

     {

         return profile.getActivation() != null && profile.getActivation().getFile() != null;

     }

     public boolean isActive( Profile profile )

     {

         Activation activation = profile.getActivation();

         ActivationFile actFile = activation.getFile();

         if ( actFile != null )

         {

             // check if the file exists, if it does then the profile will be active

             String fileString = actFile.getExists();

             RegexBasedInterpolator interpolator = new RegexBasedInterpolator();

             try

             {

                 interpolator.addValueSource( new EnvarBasedValueSource() );

             }

             catch ( IOException e )

             {

                 // ignored

             }

             interpolator.addValueSource( new MapBasedValueSource( System.getProperties() ) );

             if ( StringUtils.isNotEmpty( fileString ) )

             {

                 try

                 {

                     fileString = interpolator.interpolate( fileString, "" );

                 }

                 catch ( InterpolationException e )

                 {

                     getLogger().debug( "Failed to interpolate path in file profile activator: " + fileString, e );

                 }

                 fileString = StringUtils.replace( fileString, "\\", "/" );

                 return FileUtils.fileExists( fileString );

             }

             // check if the file is missing, if it is then the profile will be active

             fileString = actFile.getMissing();

             if ( StringUtils.isNotEmpty( fileString ) )

             {

                 try

                 {

                     fileString = interpolator.interpolate( fileString, "" );

                 }

                 catch ( InterpolationException e )

                 {

                     getLogger().debug( "Failed to interpolate path in file profile activator: " + fileString, e );

                 }

                 fileString = StringUtils.replace( fileString, "\\", "/" );

                 return !FileUtils.fileExists( fileString );

             }

         }

         return false;

     }

 }