/*
* 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);
}
}