/*
* Copyright (c) 1998-2010 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 SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.java;
import com.caucho.server.util.CauchoSystem;
import com.caucho.util.CharBuffer;
import com.caucho.vfs.IOExceptionWrapper;
import com.caucho.vfs.Path;
import com.caucho.vfs.Vfs;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.logging.Logger;
/**
* Compiles Groovy source, returning the loaded class.
*/
public class GroovyCompiler extends AbstractJavaCompiler {
protected static final Logger log
= Logger.getLogger(GroovyCompiler.class.getName());
private final static String GROOVY_COMPILER =
"org.codehaus.groovy.tools.FileSystemCompiler";
private static Class _groovyCompilerClass;
private static Method _setOutputDir;
private static Method _setClasspath;
private static Method _compile;
String _userPrefix;
public GroovyCompiler(JavaCompiler compiler)
{
super(compiler);
}
/**
* Compile the configured file.
*
* @param path the path to the java source.
* @param lineMap mapping from the generated source to the original files.
*/
protected void compileInt(String []paths, LineMap lineMap)
throws IOException
{
Thread thread = Thread.currentThread();
ClassLoader loader = thread.getContextClassLoader();
if (_groovyCompilerClass == null) {
try {
_groovyCompilerClass = Class.forName(GROOVY_COMPILER);
_setClasspath =
_groovyCompilerClass.getMethod("setClasspath",
new Class[] { String.class });
_setOutputDir =
_groovyCompilerClass.getMethod("setOutputDir",
new Class[] { String.class });
_compile =
_groovyCompilerClass.getMethod("compile",
new Class[] { String[].class });
} catch (Exception e) {
throw new RuntimeException(e);
}
}
Object compiler;
try {
compiler = _groovyCompilerClass.newInstance();
} catch (Exception e) {
throw new RuntimeException(e);
}
try {
String sourceExt = _compiler.getSourceExtension();
String path = paths[0];
int tail = path.length() - sourceExt.length();
String className = path.substring(0, tail);
Path classFile = _compiler.getClassDir().lookup(className + ".class");
String cp = normalizeClassPath(_compiler.getClassPath(), false);
_setClasspath.invoke(compiler, new Object[] { cp });
String dest = normalizePath(_compiler.getClassDirName(), false);
_setOutputDir.invoke(compiler, new Object[] { dest });
ArrayList<String> argList = new ArrayList<String>();
for (int i = 0; i < paths.length; i++) {
Path javaPath = _compiler.getSourceDir().lookup(paths[i]);
argList.add(javaPath.getNativePath());
}
String []files = new String[argList.size()];
argList.toArray(files);
_compile.invoke(compiler, new Object[] {files});
} catch (Exception e) {
e.printStackTrace();
throw new IOExceptionWrapper(e);
}
}
/**
* Converts any relative classpath references to the full path.
*/
String normalizeClassPath(String classPath, boolean generateRelative)
{
char sep = CauchoSystem.getPathSeparatorChar();
int head = 0;
int tail = 0;
CharBuffer cb = CharBuffer.allocate();
while (head < classPath.length()) {
tail = classPath.indexOf(sep, head);
if (tail < 0)
tail = classPath.length();
if (tail > head) {
String segment = classPath.substring(head, tail);
if (cb.length() != 0)
cb.append(sep);
cb.append(normalizePath(segment, generateRelative));
}
head = tail + 1;
}
return cb.close();
}
/**
* Normalizes a path.
*/
String normalizePath(String segment, boolean generateRelative)
{
if (_userPrefix == null) {
Path userPath = Vfs.lookup(CauchoSystem.getUserDir());
char sep = CauchoSystem.getFileSeparatorChar();
_userPrefix = userPath.getNativePath();
if (_userPrefix.length() == 0 ||
_userPrefix.charAt(_userPrefix.length() - 1) != sep) {
_userPrefix = _userPrefix + sep;
}
}
Path path = Vfs.lookup(segment);
String nativePath = path.getNativePath();
if (! generateRelative)
return nativePath;
if (nativePath.startsWith(_userPrefix))
nativePath = nativePath.substring(_userPrefix.length());
if (nativePath.equals(""))
return ".";
else
return nativePath;
}
}