package org.apache.maven.plugins.source;
   
   /*
    * 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.File;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  
  import org.apache.maven.archiver.MavenArchiveConfiguration;
  import org.apache.maven.archiver.MavenArchiver;
  import org.apache.maven.artifact.DependencyResolutionRequiredException;
  import org.apache.maven.execution.MavenSession;
  import org.apache.maven.model.Resource;
  import org.apache.maven.plugin.AbstractMojo;
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugins.annotations.Component;
  import org.apache.maven.plugins.annotations.Parameter;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.project.MavenProjectHelper;
  import org.codehaus.plexus.archiver.Archiver;
  import org.codehaus.plexus.archiver.ArchiverException;
  import org.codehaus.plexus.archiver.jar.JarArchiver;
  import org.codehaus.plexus.archiver.jar.ManifestException;
  import org.codehaus.plexus.util.FileUtils;
  
  /**
   * Base class for bundling sources into a jar archive.
   *
   * @since 2.0.3
   */
  public abstract class AbstractSourceJarMojo
      extends AbstractMojo
  {
      private static final String[] DEFAULT_INCLUDES = new String[] { "**/*" };
  
      private static final String[] DEFAULT_EXCLUDES = new String[] {};
  
      /**
       * List of files to include. Specified as fileset patterns which are relative to the input directory whose contents
       * is being packaged into the JAR.
       *
       * @since 2.1
       */
      @Parameter
      private String[] includes;
  
      /**
       * List of files to exclude. Specified as fileset patterns which are relative to the input directory whose contents
       * is being packaged into the JAR.
       *
       * @since 2.1
       */
      @Parameter
      private String[] excludes;
  
      /**
       * Exclude commonly excluded files such as SCM configuration. These are defined in the plexus
       * FileUtils.getDefaultExcludes()
       *
       * @since 2.1
       */
      @Parameter( property = "maven.source.useDefaultExcludes", defaultValue = "true" )
      private boolean useDefaultExcludes;
  
      /**
       * The Maven Project Object
       */
      @Parameter( defaultValue = "${project}", readonly = true, required = true )
      private MavenProject project;
  
      /**
       * The Jar archiver.
       */
      @Component( role = Archiver.class, hint = "jar" )
      private JarArchiver jarArchiver;
  
      /**
       * The archive configuration to use. See <a href="http://maven.apache.org/shared/maven-archiver/index.html">Maven
       * Archiver Reference</a>. <br/>
       * <b>Note: Since 3.0.0 the resulting archives contain a maven descriptor. If you need to suppress the generation of
      * the maven descriptor you can simply achieve this by using the
      * <a href="http://maven.apache.org/shared/maven-archiver/index.html#archive">archiver configuration</a>.</b>.
      * 
      * @since 2.1
      */
     @Parameter
     private MavenArchiveConfiguration archive = new MavenArchiveConfiguration();
 
     /**
      * Path to the default MANIFEST file to use. It will be used if <code>useDefaultManifestFile</code> is set to
      * <code>true</code>.
      *
      * @since 2.1
      */
     // CHECKSTYLE_OFF: LineLength
     @Parameter( defaultValue = "${project.build.outputDirectory}/META-INF/MANIFEST.MF", readonly = false, required = true )
     // CHECKSTYLE_ON: LineLength
     private File defaultManifestFile;
 
     /**
      * Set this to <code>true</code> to enable the use of the <code>defaultManifestFile</code>. <br/>
      *
      * @since 2.1
      */
     @Parameter( property = "maven.source.useDefaultManifestFile", defaultValue = "false" )
     private boolean useDefaultManifestFile;
 
     /**
      * Specifies whether or not to attach the artifact to the project
      */
     @Parameter( property = "maven.source.attach", defaultValue = "true" )
     private boolean attach;
 
     /**
      * Specifies whether or not to exclude resources from the sources-jar. This can be convenient if your project
      * includes large resources, such as images, and you don't want to include them in the sources-jar.
      *
      * @since 2.0.4
      */
     @Parameter( property = "maven.source.excludeResources", defaultValue = "false" )
     protected boolean excludeResources;
 
     /**
      * Specifies whether or not to include the POM file in the sources-jar.
      *
      * @since 2.1
      */
     @Parameter( property = "maven.source.includePom", defaultValue = "false" )
     protected boolean includePom;
 
     /**
      * Used for attaching the source jar to the project.
      */
     @Component
     private MavenProjectHelper projectHelper;
 
     /**
      * The directory where the generated archive file will be put.
      */
     @Parameter( defaultValue = "${project.build.directory}" )
     protected File outputDirectory;
 
     /**
      * The filename to be used for the generated archive file. For the source:jar goal, "-sources" is appended to this
      * filename. For the source:test-jar goal, "-test-sources" is appended.
      */
     @Parameter( defaultValue = "${project.build.finalName}" )
     protected String finalName;
 
     /**
      * Contains the full list of projects in the reactor.
      */
     @Parameter( defaultValue = "${reactorProjects}", readonly = true )
     protected List<MavenProject> reactorProjects;
 
     /**
      * Whether creating the archive should be forced. If set to true, the jar will always be created. If set to false,
      * the jar will only be created when the sources are newer than the jar.
      *
      * @since 2.1
      */
     @Parameter( property = "maven.source.forceCreation", defaultValue = "false" )
     private boolean forceCreation;
 
     /**
      * A flag used to disable the source procedure. This is primarily intended for usage from the command line to
      * occasionally adjust the build.
      *
      * @since 2.2
      */
     @Parameter( property = "maven.source.skip", defaultValue = "false" )
     private boolean skipSource;
 
     /**
      * The Maven session.
      */
     @Parameter( defaultValue = "${session}", readonly = true, required = true )
     private MavenSession session;
 
     // ----------------------------------------------------------------------
     // Public methods
     // ----------------------------------------------------------------------
 
     /**
      * {@inheritDoc}
      */
     public void execute()
         throws MojoExecutionException
     {
         if ( skipSource )
         {
             getLog().info( "Skipping source per configuration." );
             return;
         }
 
         packageSources( project );
     }
 
     // ----------------------------------------------------------------------
     // Protected methods
     // ----------------------------------------------------------------------
 
     /**
      * @return the wanted classifier, ie <code>sources</code> or <code>test-sources</code>
      */
     protected abstract String getClassifier();
 
     /**
      * @param p {@link MavenProject} not null
      * @return the compile or test sources
      * @throws MojoExecutionException in case of an error.
      */
     protected abstract List<String> getSources( MavenProject p )
         throws MojoExecutionException;
 
     /**
      * @param p {@link MavenProject} not null
      * @return the compile or test resources
      * @throws MojoExecutionException in case of an error.
      */
     protected abstract List<Resource> getResources( MavenProject p )
         throws MojoExecutionException;
 
     /**
      * @param p {@link MavenProject}
      * @throws MojoExecutionException in case of an error.
      */
     protected void packageSources( MavenProject p )
         throws MojoExecutionException
     {
         if ( !"pom".equals( p.getPackaging() ) )
         {
             packageSources( Arrays.asList( p ) );
         }
     }
 
     /**
      * @param theProjects {@link MavenProject}
      * @throws MojoExecutionException in case of an error.
      */
     protected void packageSources( List<MavenProject> theProjects )
         throws MojoExecutionException
     {
         if ( project.getArtifact().getClassifier() != null )
         {
             getLog().warn( "NOT adding sources to artifacts with classifier as Maven only supports one classifier "
                 + "per artifact. Current artifact [" + project.getArtifact().getId() + "] has a ["
                 + project.getArtifact().getClassifier() + "] classifier." );
 
             return;
         }
 
         MavenArchiver archiver = createArchiver();
 
         for ( MavenProject pItem : theProjects )
         {
             MavenProject subProject = getProject( pItem );
 
             if ( "pom".equals( subProject.getPackaging() ) )
             {
                 continue;
             }
 
             archiveProjectContent( subProject, archiver.getArchiver() );
         }
 
         if ( archiver.getArchiver().getResources().hasNext() || forceCreation )
         {
 
             if ( useDefaultManifestFile && defaultManifestFile.exists() && archive.getManifestFile() == null )
             {
                 getLog().info( "Adding existing MANIFEST to archive. Found under: " + defaultManifestFile.getPath() );
                 archive.setManifestFile( defaultManifestFile );
             }
 
             File outputFile = new File( outputDirectory, finalName + "-" + getClassifier() + getExtension() );
 
             try
             {
                 archiver.setOutputFile( outputFile );
                 archive.setForced( forceCreation );
 
                 archiver.createArchive( session, project, archive );
             }
             catch ( IOException e )
             {
                 throw new MojoExecutionException( "Error creating source archive: " + e.getMessage(), e );
             }
             catch ( ArchiverException e )
             {
                 throw new MojoExecutionException( "Error creating source archive: " + e.getMessage(), e );
             }
             catch ( DependencyResolutionRequiredException e )
             {
                 throw new MojoExecutionException( "Error creating source archive: " + e.getMessage(), e );
             }
             catch ( ManifestException e )
             {
                 throw new MojoExecutionException( "Error creating source archive: " + e.getMessage(), e );
             }
 
             if ( attach )
             {
                 projectHelper.attachArtifact( project, getType(), getClassifier(), outputFile );
             }
             else
             {
                 getLog().info( "NOT adding java-sources to attached artifacts list." );
             }
         }
         else
         {
             getLog().info( "No sources in project. Archive not created." );
         }
     }
 
     /**
      * @param p {@link MavenProject}
      * @param archiver {@link Archiver}
      * @throws MojoExecutionException in case of an error.
      */
     protected void archiveProjectContent( MavenProject p, Archiver archiver )
         throws MojoExecutionException
     {
         if ( includePom )
         {
             try
             {
                 archiver.addFile( p.getFile(), p.getFile().getName() );
             }
             catch ( ArchiverException e )
             {
                 throw new MojoExecutionException( "Error adding POM file to target jar file.", e );
             }
         }
 
         for ( String s : getSources( p ) )
         {
 
             File sourceDirectory = new File( s );
 
             if ( sourceDirectory.exists() )
             {
                 addDirectory( archiver, sourceDirectory, getCombinedIncludes( null ), getCombinedExcludes( null ) );
             }
         }
 
         // MAPI: this should be taken from the resources plugin
         for ( Resource resource : getResources( p ) )
         {
 
             File sourceDirectory = new File( resource.getDirectory() );
 
             if ( !sourceDirectory.exists() )
             {
                 continue;
             }
 
             List<String> resourceIncludes = resource.getIncludes();
 
             String[] combinedIncludes = getCombinedIncludes( resourceIncludes );
 
             List<String> resourceExcludes = resource.getExcludes();
 
             String[] combinedExcludes = getCombinedExcludes( resourceExcludes );
 
             String targetPath = resource.getTargetPath();
             if ( targetPath != null )
             {
                 if ( !targetPath.trim().endsWith( "/" ) )
                 {
                     targetPath += "/";
                 }
                 addDirectory( archiver, sourceDirectory, targetPath, combinedIncludes, combinedExcludes );
             }
             else
             {
                 addDirectory( archiver, sourceDirectory, combinedIncludes, combinedExcludes );
             }
         }
     }
 
     /**
      * @return {@link MavenArchiver}
      * @throws MojoExecutionException in case of an error.
      */
     protected MavenArchiver createArchiver()
         throws MojoExecutionException
     {
         MavenArchiver archiver = new MavenArchiver();
         archiver.setArchiver( jarArchiver );
 
         if ( project.getBuild() != null )
         {
             List<Resource> resources = project.getBuild().getResources();
 
             for ( Resource r : resources )
             {
 
                 if ( r.getDirectory().endsWith( "maven-shared-archive-resources" ) )
                 {
                     addDirectory( archiver.getArchiver(), new File( r.getDirectory() ), getCombinedIncludes( null ),
                                   getCombinedExcludes( null ) );
                 }
             }
         }
 
         return archiver;
     }
 
     /**
      * @param archiver {@link Archiver}
      * @param sourceDirectory {@link File}
      * @param pIncludes The list of includes.
      * @param pExcludes The list of excludes.
      * @throws MojoExecutionException in case of an error.
      */
     protected void addDirectory( Archiver archiver, File sourceDirectory, String[] pIncludes, String[] pExcludes )
         throws MojoExecutionException
     {
         try
         {
             // archiver.addFileSet( fileSet );
             archiver.addDirectory( sourceDirectory, pIncludes, pExcludes );
         }
         catch ( ArchiverException e )
         {
             throw new MojoExecutionException( "Error adding directory to source archive.", e );
         }
     }
 
     /**
      * @param archiver {@link Archiver}
      * @param sourceDirectory {@link File}
      * @param prefix The prefix.
      * @param pIncludes the includes.
      * @param pExcludes the excludes.
      * @throws MojoExecutionException in case of an error.
      */
     protected void addDirectory( Archiver archiver, File sourceDirectory, String prefix, String[] pIncludes,
                                  String[] pExcludes )
                                      throws MojoExecutionException
     {
         try
         {
             archiver.addDirectory( sourceDirectory, prefix, pIncludes, pExcludes );
         }
         catch ( ArchiverException e )
         {
             throw new MojoExecutionException( "Error adding directory to source archive.", e );
         }
     }
 
     /**
      * @return The extension {@code .jar}
      */
     protected String getExtension()
     {
         return ".jar";
     }
 
     /**
      * @param p {@link MavenProject}
      * @return The execution projet.
      */
     protected MavenProject getProject( MavenProject p )
     {
         if ( p.getExecutionProject() != null )
         {
             return p.getExecutionProject();
         }
 
         return p;
     }
 
     /**
      * @return The type {@code java-source}
      */
     protected String getType()
     {
         return "java-source";
     }
 
     /**
      * Combines the includes parameter and additional includes. Defaults to {@link #DEFAULT_INCLUDES} If the
      * additionalIncludes parameter is null, it is not added to the combined includes.
      *
      * @param additionalIncludes The includes specified in the pom resources section
      * @return The combined array of includes.
      */
     private String[] getCombinedIncludes( List<String> additionalIncludes )
     {
         List<String> combinedIncludes = new ArrayList<String>();
 
         if ( includes != null && includes.length > 0 )
         {
             combinedIncludes.addAll( Arrays.asList( includes ) );
         }
 
         if ( additionalIncludes != null && additionalIncludes.size() > 0 )
         {
             combinedIncludes.addAll( additionalIncludes );
         }
 
         // If there are no other includes, use the default.
         if ( combinedIncludes.size() == 0 )
         {
             combinedIncludes.addAll( Arrays.asList( DEFAULT_INCLUDES ) );
         }
 
         return combinedIncludes.toArray( new String[combinedIncludes.size()] );
     }
 
     /**
      * Combines the user parameter {@link #excludes}, the default excludes from plexus FileUtils, and the contents of
      * the parameter addionalExcludes.
      *
      * @param additionalExcludes Additional excludes to add to the array
      * @return The combined list of excludes.
      */
 
     private String[] getCombinedExcludes( List<String> additionalExcludes )
     {
         List<String> combinedExcludes = new ArrayList<String>();
 
         if ( useDefaultExcludes )
         {
             combinedExcludes.addAll( FileUtils.getDefaultExcludesAsList() );
         }
 
         if ( excludes != null && excludes.length > 0 )
         {
             combinedExcludes.addAll( Arrays.asList( excludes ) );
         }
 
         if ( additionalExcludes != null && additionalExcludes.size() > 0 )
         {
             combinedExcludes.addAll( additionalExcludes );
         }
 
         if ( combinedExcludes.size() == 0 )
         {
             combinedExcludes.addAll( Arrays.asList( DEFAULT_EXCLUDES ) );
         }
 
         return combinedExcludes.toArray( new String[combinedExcludes.size()] );
     }
 
     /**
      * @return The current project.
      */
     protected MavenProject getProject()
     {
         return project;
     }
 
     /**
      * @param project {@link MavenProject}
      */
     protected void setProject( MavenProject project )
     {
         this.project = project;
     }
 }