package org.apache.maven.plugin.compiler;

 /*

  * 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 org.apache.maven.artifact.Artifact;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.apache.maven.plugins.annotations.LifecyclePhase;

 import org.apache.maven.plugins.annotations.Parameter;

 import org.apache.maven.plugins.annotations.ResolutionScope;

 import org.codehaus.plexus.compiler.util.scan.SimpleSourceInclusionScanner;

 import org.codehaus.plexus.compiler.util.scan.SourceInclusionScanner;

 import org.codehaus.plexus.compiler.util.scan.StaleSourceScanner;

 import java.io.File;

 import java.util.Collections;

 import java.util.HashSet;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

 /**

  * Compiles application sources

  *

  * @author <a href="mailto:jason@maven.org">Jason van Zyl </a>

  * @version $Id: CompilerMojo.java 1410034 2012-11-15 21:40:58Z olamy $

  * @since 2.0

  */

 @org.apache.maven.plugins.annotations.Mojo( name = "compile", defaultPhase = LifecyclePhase.COMPILE, threadSafe = true,

                                             requiresDependencyResolution = ResolutionScope.COMPILE )

 public class CompilerMojo

     extends AbstractCompilerMojo

 {

     /**

      * The source directories containing the sources to be compiled.

      */

     @Parameter( defaultValue = "${project.compileSourceRoots}", readonly = true, required = true )

     private List<String> compileSourceRoots;

     /**

      * Project classpath.

      */

     @Parameter( defaultValue = "${project.compileClasspathElements}", readonly = true, required = true )

     private List<String> classpathElements;

     /**

      * The directory for compiled classes.

      */

     @Parameter( defaultValue = "${project.build.outputDirectory}", required = true, readonly = true )

     private File outputDirectory;

     /**

      * Projects main artifact.

      *

      * @todo this is an export variable, really

      */

     @Parameter( defaultValue = "${project.artifact}", readonly = true, required = true )

     private Artifact projectArtifact;

     /**

      * A list of inclusion filters for the compiler.

      */

     @Parameter

     private Set<String> includes = new HashSet<String>();

     /**

      * A list of exclusion filters for the compiler.

      */

     @Parameter

     private Set<String> excludes = new HashSet<String>();

     /**

      * <p>

      * Specify where to place generated source files created by annotation processing.

      * Only applies to JDK 1.6+

      * </p>

      *

      * @since 2.2

      */

     @Parameter( defaultValue = "${project.build.directory}/generated-sources/annotations" )

     private File generatedSourcesDirectory;

     protected List<String> getCompileSourceRoots()

     {

         return compileSourceRoots;

     }

     protected List<String> getClasspathElements()

     {

         return classpathElements;

     }

     protected File getOutputDirectory()

     {

         return outputDirectory;

     }

     public void execute()

         throws MojoExecutionException, CompilationFailureException

     {

         super.execute();

         if ( outputDirectory.isDirectory() )

         {

             projectArtifact.setFile( outputDirectory );

         }

     }

     protected SourceInclusionScanner getSourceInclusionScanner( int staleMillis )

     {

         SourceInclusionScanner scanner = null;

         if ( includes.isEmpty() && excludes.isEmpty() )

         {

             scanner = new StaleSourceScanner( staleMillis );

         }

         else

         {

             if ( includes.isEmpty() )

             {

                 includes.add( "**/*.java" );

             }

             scanner = new StaleSourceScanner( staleMillis, includes, excludes );

         }

         return scanner;

     }

     protected SourceInclusionScanner getSourceInclusionScanner( String inputFileEnding )

     {

         SourceInclusionScanner scanner = null;

         // it's not defined if we get the ending with or without the dot '.'

         String defaultIncludePattern = "**/*" + ( inputFileEnding.startsWith( "." ) ? "" : "." ) + inputFileEnding;

         if ( includes.isEmpty() && excludes.isEmpty() )

         {

             includes = Collections.singleton( defaultIncludePattern );

             scanner = new SimpleSourceInclusionScanner( includes, Collections.<String>emptySet() );

         }

         else

         {

             if ( includes.isEmpty() )

             {

                 includes.add( defaultIncludePattern );

             }

             scanner = new SimpleSourceInclusionScanner( includes, excludes );

         }

         return scanner;

     }

     protected String getSource()

     {

         return source;

     }

     protected String getTarget()

     {

         return target;

     }

     protected String getCompilerArgument()

     {

         return compilerArgument;

     }

     protected Map<String, String> getCompilerArguments()

     {

         return compilerArguments;

     }

     protected File getGeneratedSourcesDirectory()

     {

         return generatedSourcesDirectory;

     }

 }