| /* |
| * 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 freemarker.template.utility; |
| |
| import java.io.IOException; |
| import java.io.Writer; |
| import java.util.Map; |
| |
| import org.python.core.PyObject; |
| import org.python.util.PythonInterpreter; |
| |
| import freemarker.core.Environment; |
| import freemarker.template.TemplateTransformModel; |
| |
| /** |
| * A crude first pass at an embeddable Jython interpreter |
| */ |
| |
| public class JythonRuntime extends PythonInterpreter |
| implements TemplateTransformModel { |
| public Writer getWriter(final Writer out, |
| final Map args) { |
| final StringBuilder buf = new StringBuilder(); |
| final Environment env = Environment.getCurrentEnvironment(); |
| return new Writer() { |
| @Override |
| public void write(char cbuf[], int off, int len) { |
| buf.append(cbuf, off, len); |
| } |
| |
| @Override |
| public void flush() throws IOException { |
| interpretBuffer(); |
| out.flush(); |
| } |
| |
| @Override |
| public void close() { |
| interpretBuffer(); |
| } |
| |
| private void interpretBuffer() { |
| synchronized (JythonRuntime.this) { |
| PyObject prevOut = systemState.stdout; |
| try { |
| setOut(out); |
| set("env", env); |
| exec(buf.toString()); |
| buf.setLength(0); |
| } finally { |
| setOut(prevOut); |
| } |
| } |
| } |
| }; |
| } |
| } |