| package org.apache.maven.shared.scriptinterpreter; |
| |
| /* |
| * 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 bsh.Capabilities; |
| import bsh.EvalError; |
| import bsh.Interpreter; |
| import bsh.TargetError; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * Provides a facade to evaluate BeanShell scripts. |
| * |
| * @author Benjamin Bentmann |
| */ |
| class BeanShellScriptInterpreter |
| implements ScriptInterpreter |
| { |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Object evaluateScript( String script, List<String> classPath, Map<String, ? extends Object> globalVariables, |
| PrintStream scriptOutput ) |
| throws ScriptEvaluationException |
| { |
| PrintStream origOut = System.out; |
| PrintStream origErr = System.err; |
| |
| try |
| { |
| Interpreter engine = new Interpreter(); |
| |
| if ( scriptOutput != null ) |
| { |
| System.setErr( scriptOutput ); |
| System.setOut( scriptOutput ); |
| engine.setErr( scriptOutput ); |
| engine.setOut( scriptOutput ); |
| } |
| |
| if ( !Capabilities.haveAccessibility() ) |
| { |
| try |
| { |
| Capabilities.setAccessibility( true ); |
| } |
| catch ( Exception e ) |
| { |
| if ( scriptOutput != null ) |
| { |
| e.printStackTrace( scriptOutput ); |
| } |
| } |
| } |
| |
| if ( classPath != null && !classPath.isEmpty() ) |
| { |
| for ( String path : classPath ) |
| { |
| try |
| { |
| engine.getClassManager().addClassPath( new File( path ).toURI().toURL() ); |
| } |
| catch ( IOException e ) |
| { |
| throw new RuntimeException( "bad class path: " + path, e ); |
| } |
| } |
| } |
| |
| if ( globalVariables != null ) |
| { |
| for ( Map.Entry<String, ?> entry : globalVariables.entrySet() ) |
| { |
| try |
| { |
| engine.set( entry.getKey(), entry.getValue() ); |
| } |
| catch ( EvalError e ) |
| { |
| throw new RuntimeException( e ); |
| } |
| } |
| } |
| |
| try |
| { |
| return engine.eval( script ); |
| } |
| catch ( TargetError e ) |
| { |
| throw new ScriptEvaluationException( e.getTarget() ); |
| } |
| catch ( ThreadDeath e ) |
| { |
| throw e; |
| } |
| catch ( Throwable e ) |
| { |
| throw new ScriptEvaluationException( e ); |
| } |
| } |
| finally |
| { |
| System.setErr( origErr ); |
| System.setOut( origOut ); |
| } |
| } |
| |
| } |