/*
* 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 SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.java;
import com.caucho.util.CharBuffer;
import com.caucho.vfs.ByteToChar;
import java.io.IOException;
import java.io.InputStream;
/**
* Reads jikes error messages and parses them into a usable format.
*/
class JikesErrorParser extends ErrorParser {
private ByteToChar token = ByteToChar.create();
private ByteToChar buf = ByteToChar.create();
private String filename = "filename";
/**
* Parse all the errors into an array.
*
* @return null if no errors found.
*/
String parseErrors(InputStream is, LineMap lineMap)
throws IOException
{
CharBuffer errors = new CharBuffer();
scanError(is, lineMap, errors);
return errors.toString();
}
/**
* Scans a single error.
*
* <p>Javac errors look like "filename:line: message"
*/
private void scanError(InputStream is, LineMap lineMap, CharBuffer errors)
throws IOException
{
int ch = is.read();
ByteToChar sourceLine = ByteToChar.create();
sourceLine.setEncoding(System.getProperty("file.encoding"));
filename = "filename";
buf.clear();
while (ch >= 0) {
int colOffset = 0;
for (; ch >= 0 && (ch == ' ' || ch == '\t'); ch = is.read())
colOffset++;
int line = 0;
for (; ch >= 0 && ch >= '0' && ch <= '9'; ch = is.read()) {
line = 10 * line + ch - '0';
colOffset++;
}
if (ch < 0)
return;
else if (colOffset == 0 && ! Character.isWhitespace((char) ch)) {
ch = scanUnknownLine(is, ch, errors);
}
else if (ch != '.') {
ch = skipToNewline(is, ch);
continue;
}
sourceLine.clear();
for (ch = is.read(); ch >= 0 && ch != '\n'; ch = is.read())
sourceLine.addByte(ch);
sourceLine.addChar('\n');
int column = 0;
for (ch = is.read(); ch >= 0 && ch != '\n'; ch = is.read()) {
if (ch == '^')
break;
else if (ch == ' ')
column++;
else if (ch == '\t')
column = ((column + 8) / 8) * 8;
}
for (int i = colOffset + 1; i < column; i++)
sourceLine.addChar(' ');
sourceLine.addChar('^');
sourceLine.addChar('\n');
ch = skipToNewline(is, ch);
if (ch != '*')
continue;
buf.clear();
for (; ch >= 0 && ch != ':' && ch != '\n'; ch = is.read()) {
}
if (ch != ':') {
ch = skipToNewline(is, ch);
continue;
}
for (ch = is.read();
ch >= 0 && (ch == ' ' || ch == ' ');
ch = is.read()) {
}
for (; ch >= 0 && ch != '\n'; ch = is.read())
buf.addByte(ch);
String message = buf.getConvertedString();
if (lineMap != null)
errors.append(lineMap.convertError(filename, line, 0, message));
else
errors.append(filename + ":" + line + ": " + message);
errors.append('\n');
errors.append(sourceLine.getConvertedString());
}
}
private int scanUnknownLine(InputStream is, int ch, CharBuffer errors)
throws IOException
{
token.clear();
token.addByte(ch);
for (ch = is.read();
ch > 0 && ! Character.isWhitespace((char) ch);
ch = is.read()) {
}
if (token.equals("Found")) {
return scanFilename(is, ch);
}
else if (token.equals("***")) {
for (; ch == ' ' || ch == '\t'; ch = is.read()) {
}
token.clear();
for (; ch > 0 && ch != '\n' && ch != ':'; ch = is.read()) {
token.addByte(ch);
}
if (token.equals("Warning"))
return skipToNewline(is, ch);
token.clear();
for (ch = is.read(); ch > 0 && ch != '\n'; ch = is.read())
token.addByte(ch);
token.addChar('\n');
errors.append(token.getConvertedString());
return is.read();
}
else
return skipToNewline(is, ch);
}
private int scanFilename(InputStream is, int ch)
throws IOException
{
for (; ch >= 0 && ch != '\n' && ch != '"'; ch = is.read()) {
}
if (ch != '"')
return skipToNewline(is, ch);
token.clear();
for (ch = is.read();
ch >= 0 && ch != '"' && ch != '\n';
ch = is.read()) {
token.addByte(ch);
}
if (ch != '"')
return skipToNewline(is, ch);
filename = token.getConvertedString();
return skipToNewline(is, ch);
}
private int skipToNewline(InputStream is, int ch)
throws IOException
{
for (; ch >= 0 && ch != '\n'; ch = is.read()) {
}
return is.read();
}
}