DyanOSC.java

/**
 * ##library.name##
 * ##library.sentence##
 * ##library.url##
 *
 * Copyright James Britt / Neurogami 
 *
 * The MIT License (MIT)
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *  
 * 
 * @author      ##author##
 * @modified    ##date##
 * @version     ##library.prettyVersion## (##library.version##)
 */


package com.neurogami.dynaosc;

import processing.core.*; 

import javax.tools.JavaCompiler;
import javax.tools.JavaFileObject;
import javax.tools.ToolProvider;
import javax.tools.StandardJavaFileManager;
import javax.tools.JavaCompiler.CompilationTask;

import java.util.Arrays;

import java.io.File;
import java.io.PrintWriter;
import java.io.FileNotFoundException;
import java.io.UnsupportedEncodingException;

import java.net.URL;
import java.net.URLClassLoader;
import java.net.MalformedURLException;


public class DynaOSC {

  PApplet owner;
  OscarInterface oscar;
  String newCodeBaseName = "Oscar0";

  public final static String VERSION = "##library.prettyVersion##";

  /**
   * a Constructor, usually called in the setup() method in your sketch to
   * initialize and start the library.
   *
   * 
   * @example DynaOSC
   * @param ownerP
   */
  public DynaOSC(PApplet ownerP) {
    owner = ownerP;
    System.setProperty("java.home", "/home/users/james/ownCloud/repos/RuntimeCompiling/p5");
    oscar = new OSCar();
  }

  public void d(String s) {
    System.out.println("DEBUG: " + s );
  }

  public void genNewCode() {

    String s = "package com.neurogami.dynaosc;\n";
    s = s + "public class  " + newCodeBaseName +" implements OscarInterface  {\n";
    s = s + "public "+newCodeBaseName+"() { }\n";
    s = s + "public void sendSomeOSC() {\n";
    s = s + "System.out.println(\"sendSomeOSC(): DNYAOSC!\");\n";
    s = s + "}\n";
    s = s + "}\n";
    try {
      PrintWriter writer = new PrintWriter(newCodeBaseName + ".java", "UTF-8");
      writer.println(s);
      writer.close();
    } catch (FileNotFoundException fnfe ) {
      System.err.println("FileNotFoundException " + fnfe);
    } 
    catch (UnsupportedEncodingException uee ) {
      System.err.println("UnsupportedEncodingException " + uee );
    }

    JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
    if (compiler == null ) {
      System.err.println("***************** compiler is null! *****************");
    }

    // We are getting a NPE here:   
    StandardJavaFileManager sjfm = compiler.getStandardFileManager(null, null, null); 
    
    String[] options = new String[] { "-d", "classes", "-cp", "classes" };
    CompilationTask compilationTask = compiler.getTask(null, null, null,
        Arrays.asList(options),
        null,
        sjfm.getJavaFileObjects(newCodeBaseName + ".java")
        );
    compilationTask.call();
    File classesDir = new File("runtime");
    try {
      ClassLoader parentLoader = OSCar.class.getClassLoader();
      URLClassLoader loader1 = new URLClassLoader( new URL[] { classesDir.toURI().toURL() }, parentLoader);
      File f = new File("classes");
      URL[] cp = {f.toURI().toURL()};    
      URLClassLoader urlcl = new URLClassLoader(cp);
      try {
        Class clazz = urlcl.loadClass("com.neurogami.dynaosc." + newCodeBaseName);   
        oscar = (OscarInterface) clazz.newInstance();
      } catch (Exception ie) {
        System.err.println("Error calling cls1.newInstance() " + ie);
      };
    } catch(MalformedURLException mye) {};
  }

  public void  sendSomething() {
    oscar.sendSomeOSC();
  }


  public void hello() {
    System.out.println("Hello from DynaOSC.java!");
  }


  /**
   * return the version of the library.
   * 
   * @return String
   */
  public static String version() {
    return VERSION;
  }


}