| /* |
| * Copyright (c) 2006, 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.io.*; |
| import javax.annotation.processing.*; |
| import javax.lang.model.element.*; |
| import javax.lang.model.type.*; |
| import javax.lang.model.util.*; |
| import static javax.tools.Diagnostic.Kind.*; |
| |
| import java.util.Set; |
| |
| @SupportedAnnotationTypes({"*"}) |
| public class HelloWorldAP extends AbstractProcessor { |
| Messager msgr = null; |
| Filer filer = null; |
| boolean DONE=false; |
| |
| @Override |
| public void init(ProcessingEnvironment penv) { |
| processingEnv = penv; |
| msgr=penv.getMessager(); |
| filer=penv.getFiler(); |
| } |
| |
| public boolean process(Set<? extends TypeElement> tes, RoundEnvironment renv ) { |
| boolean ret = true; |
| if(!renv.processingOver() && !DONE) { |
| msgr.printMessage(NOTE, "running process to create HelloWorld."); |
| try { |
| Writer pw = filer.createSourceFile("HelloWorld").openWriter(); |
| pw.write("public class HelloWorld {\n"); |
| pw.write(" public static void main (String argv[]) {\n"); |
| pw.write(" System.out.println(\"Hello apt world.\");\n"); |
| pw.write(" }\n"); |
| pw.write("}\n"); |
| pw.flush(); |
| pw.close(); |
| |
| OutputStream os = filer.createClassFile("HelloWorldAP").openOutputStream(); |
| // the easiest way to create a class file is to copy another one |
| InputStream is = getClass().getResourceAsStream("HelloWorldAP.class"); |
| copy(is, os); |
| is.close(); |
| os.flush(); |
| os.close(); |
| DONE=true; |
| } |
| catch (IOException ioe) { |
| msgr.printMessage(ERROR, ioe.getMessage()); |
| ret = false; |
| } |
| catch (Exception e) { |
| msgr.printMessage(ERROR, e.getMessage()); |
| ret = false; |
| } |
| } |
| return ret; |
| } |
| |
| void copy(InputStream is, OutputStream os) throws IOException { |
| byte[] buf = new byte[8192]; |
| int n; |
| while ((n = is.read(buf, 0, buf.length)) > 0) |
| os.write(buf, 0, n); |
| } |
| } |