/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.java;
import com.caucho.loader.DynamicClassLoader;
import com.caucho.loader.NonScanDynamicClassLoader;
import com.caucho.loader.EnvironmentClassLoader;
import com.caucho.util.CharBuffer;
import com.caucho.vfs.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Compiles Java source, returning the loaded class.
*/
public class InternalCompiler extends AbstractJavaCompiler {
private static final Logger log
= Logger.getLogger(InternalCompiler.class.getName());
private static boolean _hasCompiler; // already tested for compiler
private static DynamicClassLoader _internalLoader;
Process _process;
String _userPrefix;
boolean _isDead;
public InternalCompiler(JavaCompiler compiler)
{
super(compiler);
}
protected void compileInt(String []path, LineMap lineMap)
throws IOException, JavaCompileException
{
Path javaHome = null;
if (! _hasCompiler) {
JavaCompileException exn = null;
try {
ClassLoader loader = ClassLoader.getSystemClassLoader();
Class.forName("com.sun.tools.javac.Main", false, loader);
_hasCompiler = true;
} catch (Exception e) {
}
try {
DynamicClassLoader env;
env = new NonScanDynamicClassLoader(ClassLoader.getSystemClassLoader());
javaHome = Vfs.lookup(System.getProperty("java.home"));
Path jar = javaHome.lookup("./lib/tools.jar");
if (jar.canRead())
env.addJar(jar);
jar = javaHome.lookup("../lib/tools.jar");
if (jar.canRead())
env.addJar(jar);
Class.forName("com.sun.tools.javac.Main", false, env);
_hasCompiler = true;
} catch (ClassNotFoundException e) {
throw new JavaCompileException(L.l("Resin can't load com.sun.tools.javac.Main. Usually this means that the JDK tools.jar is missing from the classpath, possibly because of using a JRE instead of the JDK. You can either add tools.jar to the classpath or change the compiler to an external one with <java compiler='javac'/> or jikes.\n {0}\n JAVA_HOME={1}", String.valueOf(e), javaHome.getNativePath()), e);
}
}
executeInt(path, lineMap);
}
/**
* Compiles the names files.
*/
private void executeInt(String []path, LineMap lineMap)
throws JavaCompileException, IOException
{
MemoryStream tempStream = new MemoryStream();
WriteStream error = new WriteStream(tempStream);
try {
// String parent = javaPath.getParent().getNativePath();
ArrayList<String> argList = new ArrayList<String>();
argList.add("-d");
argList.add(_compiler.getClassDirName());
if (_compiler.getEncoding() != null) {
String encoding = Encoding.getJavaName(_compiler.getEncoding());
if (encoding != null && ! encoding.equals("ISO8859_1")) {
argList.add("-encoding");
argList.add(_compiler.getEncoding());
}
}
argList.add("-classpath");
argList.add(_compiler.getClassPath());
ArrayList<String> args = _compiler.getArgs();
if (args != null)
argList.addAll(args);
for (int i = 0; i < path.length; i++) {
Path javaPath = _compiler.getSourceDir().lookup(path[i]);
argList.add(javaPath.getNativePath());
}
if (log.isLoggable(Level.FINER)) {
CharBuffer msg = new CharBuffer();
msg.append("javac(int)");
for (int i = 0; i < argList.size(); i++) {
if (argList.get(i).equals("-classpath")
&& ! log.isLoggable(Level.FINEST)) {
i++;
continue;
}
msg.append(" ");
msg.append(argList.get(i));
}
log.finer(msg.toString());
}
String []argArray = argList.toArray(new String[argList.size()]);
int status = -1;
Thread thread = Thread.currentThread();
ClassLoader oldLoader = thread.getContextClassLoader();
DynamicClassLoader env;
env = new NonScanDynamicClassLoader(ClassLoader.getSystemClassLoader());
Path javaHome = Vfs.lookup(System.getProperty("java.home"));
Path jar = javaHome.lookup("./lib/tools.jar");
if (jar.canRead())
env.addJar(jar);
jar = javaHome.lookup("../lib/tools.jar");
if (jar.canRead())
env.addJar(jar);
// env = _internalLoader;
try {
thread.setContextClassLoader(env);
try {
Class cl = Class.forName("com.sun.tools.javac.Main", false, env);
Object compiler = cl.newInstance();
Method compile = null;
Object value = null;
try {
compile = cl.getMethod("compile", new Class[] { String[].class , PrintWriter.class });
value = compile.invoke(compiler, new Object[] { argArray, error.getPrintWriter() });
} catch (Throwable e) {
log.log(Level.FINER, e.toString(), e);
}
if (compile == null) {
compile = cl.getMethod("compile", new Class[] { String[].class });
value = compile.invoke(compiler, new Object[] { argArray });
}
if (value instanceof Integer)
status = ((Integer) value).intValue();
} catch (ClassNotFoundException e) {
throw new JavaCompileException(L.l("Can't find internal Java compiler. Either configure an external compiler with <javac> or use a JDK which contains a Java compiler."), e);
} catch (NoSuchMethodException e) {
throw new JavaCompileException(e);
} catch (InstantiationException e) {
throw new JavaCompileException(e);
} catch (IllegalAccessException e) {
throw new JavaCompileException(e);
} catch (InvocationTargetException e) {
throw new IOExceptionWrapper(e);
}
error.close();
tempStream.close();
} finally {
thread.setContextClassLoader(oldLoader);
}
ReadStream read = tempStream.openReadAndSaveBuffer();
JavacErrorParser parser = new JavacErrorParser(this, path[0], _compiler.getEncoding());
String errors = parser.parseErrors((InputStream) read, lineMap);
read.close();
if (errors != null)
errors = errors.trim();
if (log.isLoggable(Level.FINE)) {
read = tempStream.openReadAndSaveBuffer();
CharBuffer cb = new CharBuffer();
int ch;
while ((ch = read.read()) >= 0) {
cb.append((char) ch);
}
read.close();
log.fine(cb.toString());
}
else if (status == 0 && errors != null && ! errors.equals("")) {
final String msg = errors;
new com.caucho.loader.ClassLoaderContext(_compiler.getClassLoader()) {
public void run()
{
log.warning(msg);
}
};
}
if (status != 0)
throw new JavaCompileException(errors);
} finally {
tempStream.destroy();
}
}
}