| /* |
| * 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.scripting.groovy.internal; |
| |
| import java.io.IOException; |
| import java.io.Reader; |
| import java.io.Writer; |
| |
| import javax.script.Bindings; |
| import javax.script.ScriptContext; |
| import javax.script.ScriptException; |
| |
| import groovy.lang.Writable; |
| import groovy.text.Template; |
| import org.apache.sling.scripting.api.AbstractSlingScriptEngine; |
| |
| public class GStringScriptEngine extends AbstractSlingScriptEngine { |
| |
| private final GStringScriptEngineFactory scriptEngineFactory; |
| |
| GStringScriptEngine(final GStringScriptEngineFactory gStringScriptEngineFactory) { |
| super(gStringScriptEngineFactory); |
| this.scriptEngineFactory = gStringScriptEngineFactory; |
| } |
| |
| public Object eval(final Reader reader, final ScriptContext scriptContext) throws ScriptException { |
| final Template template; |
| try { |
| template = scriptEngineFactory.getTemplateEngine().createTemplate(reader); |
| } catch (IOException | ClassNotFoundException e) { |
| throw new ScriptException("Unable to compile GString template: " + e.getMessage()); |
| } |
| |
| final Bindings bindings = scriptContext.getBindings(ScriptContext.ENGINE_SCOPE); |
| final Writer writer = scriptContext.getWriter(); |
| final Writable result = template.make(bindings); |
| |
| try { |
| result.writeTo(writer); |
| } catch (IOException e) { |
| throw new ScriptException("Unable to write result of script execution: " + e.getMessage()); |
| } |
| |
| return null; |
| } |
| |
| } |