/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Axis" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.axis.utils.compiler;
import org.apache.axis.utils.AxisClassLoader;
import org.apache.log4j.Category;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.StringTokenizer;
/**
* This class wraps the Sun's Javac Compiler.
*
* @author <a href="mailto:dims@yahoo.com">Davanum Srinivas</a>
* @author <a href="mailto:stefano@apache.org">Stefano Mazzocchi</a>
* @version $Revision: 1.2.2.1 $ $Date: 2001/12/12 19:36:22 $
* @since 2.0
*/
public class Javac extends AbstractCompiler {
static Category category =
Category.getInstance(Javac.class.getName());
public final static String CLASSIC_CLASS = "sun.tools.javac.Main";
public final static String MODERN_CLASS = "com.sun.tools.javac.Main";
private boolean modern = false;
public Javac() {
// Use reflection to be able to build on all JDKs
AxisClassLoader cl = AxisClassLoader.getClassLoader();
try {
cl.loadClass(MODERN_CLASS);
modern = true;
} catch (ClassNotFoundException e) {
category.debug("Javac connector could not find modern compiler -- falling back to classic.");
try {
cl.loadClass(CLASSIC_CLASS);
modern = false;
} catch (Exception ex) {
category.error("No compiler found in your classpath. Make sure you added 'tools.jar'", ex);
throw new RuntimeException("No compiler found in your classpath. Make sure you added 'tools.jar'");
}
}
category.debug("Javac compiler class: " + (modern?MODERN_CLASS:CLASSIC_CLASS));
}
/**
* Compile a source file yielding a loadable class file.
*
* @param filename The object program base file name
* @param baseDirectory The directory containing the object program file
* @param encoding The encoding expected in the source file or
* <code>null</code> if it is the platform's default encoding
* @exception LanguageException If an error occurs during compilation
*/
public boolean compile() throws IOException {
ByteArrayOutputStream err = new ByteArrayOutputStream();
sun.tools.javac.Main compiler = new sun.tools.javac.Main(err, "javac");
boolean result = compiler.compile(toStringArray(fillArguments(new ArrayList())));
this.errors = new ByteArrayInputStream(err.toByteArray());
return result;
}
/**
* Parse the compiler error stream to produce a list of
* <code>CompilerError</code>s
*
* @param errors The error stream
* @return The list of compiler error messages
* @exception IOException If an error occurs during message collection
*/
protected List parseStream(BufferedReader input) throws IOException {
if (modern) {
return parseModernStream(input);
} else {
return parseClassicStream(input);
}
}
/**
* Parse the compiler error stream to produce a list of
* <code>CompilerError</code>s
*
* @param errors The error stream
* @return The list of compiler error messages
* @exception IOException If an error occurs during message collection
*/
protected List parseModernStream(BufferedReader input) throws IOException {
List errors = new ArrayList();
String line = null;
StringBuffer buffer = null;
while (true) {
// cleanup the buffer
buffer = new StringBuffer(); // this is quicker than clearing it
// most errors terminate with the '^' char
do {
if ((line = input.readLine()) == null)
{
if (buffer.length() > 0) {
// There's an error which doesn't end with a '^'
errors.add(new CompilerError("\n" + buffer.toString()));
}
return errors;
}
category.debug(line);
buffer.append(line);
buffer.append('\n');
} while (!line.endsWith("^"));
// add the error bean
errors.add(parseModernError(buffer.toString()));
}
}
/**
* Parse an individual compiler error message with modern style.
*
* @param error The error text
* @return A messaged <code>CompilerError</code>
*/
private CompilerError parseModernError(String error) {
StringTokenizer tokens = new StringTokenizer(error, ":");
try {
String file = tokens.nextToken();
if (file.length() == 1) file = new StringBuffer(file).append(":").append(tokens.nextToken()).toString();
int line = Integer.parseInt(tokens.nextToken());
String message = tokens.nextToken("\n").substring(1);
String context = tokens.nextToken("\n");
String pointer = tokens.nextToken("\n");
int startcolumn = pointer.indexOf("^");
int endcolumn = context.indexOf(" ", startcolumn);
if (endcolumn == -1) endcolumn = context.length();
return new CompilerError(file, false, line, startcolumn, line, endcolumn, message);
} catch(NoSuchElementException nse) {
return new CompilerError("no more tokens - could not parse error message: " + error);
} catch(Exception nse) {
return new CompilerError("could not parse error message: " + error);
}
}
/**
* Parse the compiler error stream to produce a list of
* <code>CompilerError</code>s
*
* @param errors The error stream
* @return The list of compiler error messages
* @exception IOException If an error occurs during message collection
*/
protected List parseClassicStream(BufferedReader input) throws IOException {
List errors = null;
String line = null;
StringBuffer buffer = null;
while (true) {
// cleanup the buffer
buffer = new StringBuffer(); // this is faster than clearing it
// each error has 3 lines
for (int i = 0; i < 3 ; i++) {
if ((line = input.readLine()) == null) return errors;
category.debug(line);
buffer.append(line);
buffer.append('\n');
}
// if error is found create the vector
if (errors == null) errors = new ArrayList();
// add the error bean
errors.add(parseClassicError(buffer.toString()));
}
}
/**
* Parse an individual compiler error message with classic style.
*
* @param error The error text
* @return A messaged <code>CompilerError</code>
*/
private CompilerError parseClassicError(String error) {
StringTokenizer tokens = new StringTokenizer(error, ":");
try {
String file = tokens.nextToken();
if (file.length() == 1) file = new StringBuffer(file).append(":").append(tokens.nextToken()).toString();
int line = Integer.parseInt(tokens.nextToken());
String last = tokens.nextToken();
// In case the message contains ':', it should be reassembled
while (tokens.hasMoreElements()) {
last += tokens.nextToken();
}
tokens = new StringTokenizer(last.trim(), "\n");
String message = tokens.nextToken();
String context = tokens.nextToken();
String pointer = tokens.nextToken();
int startcolumn = pointer.indexOf("^");
int endcolumn = context.indexOf(" ", startcolumn);
if (endcolumn == -1) endcolumn = context.length();
return new CompilerError(srcDir + File.separator + file, true, line, startcolumn, line, endcolumn, message);
} catch(NoSuchElementException nse) {
return new CompilerError("no more tokens - could not parse error message: " + error);
} catch(Exception nse) {
return new CompilerError("could not parse error message: " + error);
}
}
public String toString() {
return "Sun Javac Compiler";
}
}