/*

  * EL4J, the Extension Library for the J2EE, adds incremental enhancements to

  * the spring framework, http://el4j.sf.net

  * Copyright (C) 2006 by ELCA Informatique SA, Av. de la Harpe 22-24,

  * 1000 Lausanne, Switzerland, http://www.elca.ch

  *

  * EL4J is published under the GNU Lesser General Public License (LGPL)

  * Version 2.1. See http://www.gnu.org/licenses/

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

  * GNU Lesser General Public License for more details.

  *

  * For alternative licensing, please contact info@elca.ch

  */

 package ch.elca.el4j.maven.plugins.eclipsecs;

 import java.io.File;

 import java.io.FileWriter;

 import java.io.IOException;

 import java.io.InputStreamReader;

 import java.io.Reader;

 import java.io.Writer;

 import org.apache.maven.plugin.AbstractMojo;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.apache.maven.plugin.MojoFailureException;

 import org.apache.maven.project.MavenProject;

 import org.apache.velocity.VelocityContext;

 import org.apache.velocity.app.Velocity;

 import org.codehaus.plexus.util.IOUtil;

 import org.springframework.util.StringUtils;

 /**

  * Mojo to create .checkstyle file.

  *

  * @svnLink $Revision: 3872 $;$Date: 2009-08-04 13:41:09 +0200 (Di, 04. Aug 2009) $;$Author: swismer $;$URL: https://el4j.svn.sourceforge.net/svnroot/el4j/branches/el4j_3_1/el4j/maven/plugins/maven-checkclipse-helper-plugin/src/main/java/ch/elca/el4j/maven/plugins/eclipsecs/EclipseCsConfigMojo.java $

  *

  * @author Stefan Wismer (SWI)

  * @author Martin Zeltner (MZE)

  *

  * @goal eclipse-cs-config

  * @requiresProject true

  */

 public class EclipseCsConfigMojo extends AbstractMojo {

         // Checkstyle: MemberName off

         /**

          * Path to checkstyle file.

          *

          * @parameter expression="${checkstyle.checkstyleFilePath}"

          * @required

          */

         protected File checkstyleFile;

         /**

          * Path to eclipse-cs config file.

          *

          * @parameter expression="${checkstyle.configFilePath}"

          *            default-value=".checkstyle"

          * @required

          */

         protected File configFilePath;

         /**

          * Flag to enable eclipse-cs.

          *

          * @parameter expression="${checkstyle.enableEclipseCs}"

          *            default-value="true"

          * @required

          */

         protected boolean enableEclipseCs;

         /**

          * The maven project.

          *

          * @parameter expression="${project}"

          * @required

          * @readonly

          */

         protected MavenProject project;

         // Checkstyle: MemberName on

         /**

          * {@inheritDoc}

          */

         public void execute() throws MojoExecutionException, MojoFailureException {

                 String projectPackaging = project.getPackaging();

                 if (!StringUtils.hasText(projectPackaging)

                         || projectPackaging.contains("pom")) {

                         getLog().info("No eclipse-cs config for pom project.");

                         return;

                 }

                 if (configFilePath.isDirectory()) {

                         throw new MojoExecutionException("Given file path "

                                 + configFilePath.getAbsolutePath()

                                 + " is a directory!");

                 }

                 getLog().info("Writing file " + configFilePath.getAbsolutePath());

                 VelocityContext context = new VelocityContext();

                 context.put("name", project.getName());

                 context.put("enabled", Boolean.toString(enableEclipseCs));

                 context.put("location", checkstyleFile.getPath());

                 try {

                         Writer out = new FileWriter(configFilePath);

                         Reader template = new InputStreamReader(getClass().getResourceAsStream("/etc/velocity/eclipse-cs.vm"));

                         Velocity.evaluate(context, out, "elcaservice", template);

                         IOUtil.close(template);

                         IOUtil.close(out);

                 } catch (IOException e) {

                         getLog().error(e);

                 }

         }

 }