| /* |
| * 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. |
| */ |
| package org.apache.sling.commons.testing.util; |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| |
| import org.mozilla.javascript.Context; |
| import org.mozilla.javascript.ScriptableObject; |
| |
| /** Simplistic Javascript engine using Rhino, meant |
| * for automated tests */ |
| public class JavascriptEngine { |
| /** Execute supplied code against supplied data, |
| * see JavascriptEngineTest for examples */ |
| public String execute(String code, String jsonData) throws IOException { |
| final String jsCode = "data=" + jsonData + ";\n" + code; |
| final Context rhinoContext = Context.enter(); |
| final ScriptableObject scope = rhinoContext.initStandardObjects(); |
| |
| // execute the script, out script variable maps to sw |
| final StringWriter sw = new StringWriter(); |
| final PrintWriter pw = new PrintWriter(sw, true); |
| ScriptableObject.putProperty(scope, "out", Context.javaToJS(pw, scope)); |
| final int lineNumber = 1; |
| final Object securityDomain = null; |
| try { |
| rhinoContext.evaluateString( |
| scope, |
| jsCode, |
| getClass().getSimpleName(), |
| lineNumber, |
| securityDomain); |
| } catch(Exception e) { |
| final IOException ioe = new IOException("While executing [" + code + "]:" + e); |
| ioe.initCause(e); |
| throw ioe; |
| } |
| |
| // check script output |
| pw.flush(); |
| return sw.toString().trim(); |
| } |
| } |