package org.apache.maven.plugin.invoker;
/*
* 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 groovy.lang.Binding;
import groovy.lang.GroovyShell;
import java.io.File;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.tools.ant.AntClassLoader;
import org.codehaus.groovy.control.CompilerConfiguration;
/**
* Provides a facade to evaluate Groovy scripts.
*
* @author Benjamin Bentmann
* @version $Id: GroovyScriptInterpreter.java 737521 2009-01-25 15:22:26Z bentmann $
*/
class GroovyScriptInterpreter
implements ScriptInterpreter
{
/**
* {@inheritDoc}
*/
public Object evaluateScript( String script, List classPath, Map globalVariables, PrintStream scriptOutput )
throws ScriptEvaluationException
{
PrintStream origOut = System.out;
PrintStream origErr = System.err;
try
{
CompilerConfiguration config = new CompilerConfiguration( CompilerConfiguration.DEFAULT );
if ( scriptOutput != null )
{
System.setErr( scriptOutput );
System.setOut( scriptOutput );
config.setOutput( new PrintWriter( scriptOutput ) );
}
ClassLoader loader = null;
if ( classPath != null && !classPath.isEmpty() )
{
AntClassLoader childFirstLoader = new AntClassLoader( getClass().getClassLoader(), false );
for ( Iterator it = classPath.iterator(); it.hasNext(); )
{
String path = (String) it.next();
childFirstLoader.addPathComponent( new File( path ) );
}
loader = childFirstLoader;
}
Binding binding = new Binding( globalVariables );
GroovyShell interpreter = new GroovyShell( loader, binding, config );
try
{
return interpreter.evaluate( script );
}
catch ( ThreadDeath e )
{
throw e;
}
catch ( Throwable e )
{
throw new ScriptEvaluationException( e );
}
}
finally
{
System.setErr( origErr );
System.setOut( origOut );
}
}
}