package org.apache.maven.plugins.scripting; | |
/* | |
* 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 javax.script.ScriptContext; | |
import javax.script.ScriptEngine; | |
import javax.script.ScriptEngineManager; | |
import javax.script.ScriptException; | |
import org.apache.maven.plugin.AbstractMojo; | |
import org.apache.maven.plugin.MojoExecutionException; | |
import org.apache.maven.plugin.MojoFailureException; | |
import org.apache.maven.plugins.annotations.Mojo; | |
import org.apache.maven.plugins.annotations.Parameter; | |
import org.apache.maven.project.MavenProject; | |
/** | |
* Evaluate the specified script | |
* | |
* @author Robert Scholte | |
* @since 3.0.0 | |
*/ | |
@Mojo( name = "eval" ) | |
public class EvalMojo | |
extends AbstractMojo | |
{ | |
@Parameter( required = true ) | |
private String engineName; // or map extension to engineName?? | |
/** | |
* When used, also specify the engineName | |
*/ | |
@Parameter | |
private String script; | |
// script variables | |
@Parameter( defaultValue = "${project}", readonly = true ) | |
private MavenProject project; | |
private ScriptEngineManager manager = new ScriptEngineManager(); | |
@Override | |
public void execute() | |
throws MojoExecutionException, MojoFailureException | |
{ | |
ScriptEngine engine = null; | |
if ( script != null ) | |
{ | |
engine = getScriptEngine( engineName ); | |
if ( engine == null ) | |
{ | |
throw new MojoFailureException( "Missing scriptEngine" ); | |
} | |
} | |
else | |
{ | |
// from file | |
} | |
try | |
{ | |
ScriptContext context = engine.getContext(); | |
context.setAttribute( "project", project, ScriptContext.GLOBAL_SCOPE ); | |
Object result = engine.eval( script ); | |
getLog().info( "Result:" ); | |
if ( result != null ) | |
{ | |
getLog().info( result.toString() ); | |
} | |
} | |
catch ( ScriptException e ) | |
{ | |
throw new MojoExecutionException( e.getMessage(), e ); | |
} | |
} | |
private ScriptEngine getScriptEngine( String name ) | |
{ | |
if ( name == null ) | |
{ | |
return null; | |
} | |
else | |
{ | |
return manager.getEngineByName( engineName ); | |
} | |
} | |
} |