public LineReader(InputStream inStream) 
{
            this.inStream = inStream;
            inByteBuf = new byte[8192];
}

 public LineReader(Reader reader) 
{
            this.reader = reader;
            inCharBuf = new char[8192];
}

 int readLine() throws IOException 
{
            
            int len = 0;
            char c = 0;
            boolean skipWhiteSpace = true;
            boolean isCommentLine = false;
            boolean isNewLine = true;
            boolean appendedLineBegin = false;
            boolean precedingBackslash = false;
            boolean skipLF = false;
            while (true) {
                if (inOff  >= inLimit) {
                    inLimit = (inStream==null)?reader.read(inCharBuf)
                                              :inStream.read(inByteBuf);
                    inOff = 0;
                    if (inLimit < = 0) {
                        if (len == 0 || isCommentLine) {
                            return -1;
                        }
                        return len;
                    }
                }
                if (inStream != null) {
                    //The line below is equivalent to calling a
                    //ISO8859-1 decoder.
                    c = (char) (0xff & inByteBuf[inOff++]);
                } else {
                    c = inCharBuf[inOff++];
                }
                if (skipLF) {
                    skipLF = false;
                    if (c == '\n") {
                        continue;
                    }
                }
                if (skipWhiteSpace) {
                    if (c == ' " || c == '\t" || c == '\f") {
                        continue;
                    }
                    if (!appendedLineBegin && (c == '\r" || c == '\n")) {
                        continue;
                    }
                    skipWhiteSpace = false;
                    appendedLineBegin = false;
                }
                if (isNewLine) {
                    isNewLine = false;
                    if (c == '#" || c == '!") {
                        isCommentLine = true;
                        continue;
                    }
                }
                if (c != '\n" && c != '\r") {
                    lineBuf[len++] = c;
                    if (len == lineBuf.length) {
                        int newLength = lineBuf.length * 2;
                        if (newLength <  0) {
                            newLength = Integer.MAX_VALUE;
                        }
                        char[] buf = new char[newLength];
                        System.arraycopy(lineBuf, 0, buf, 0, lineBuf.length);
                        lineBuf = buf;
                    }
                    //flip the preceding backslash flag
                    if (c == '\\") {
                        precedingBackslash = !precedingBackslash;
                    } else {
                        precedingBackslash = false;
                    }
                }
                else {
                    // reached EOL
                    if (isCommentLine || len == 0) {
                        isCommentLine = false;
                        isNewLine = true;
                        skipWhiteSpace = true;
                        len = 0;
                        continue;
                    }
                    if (inOff  >= inLimit) {
                        inLimit = (inStream==null)
                                  ?reader.read(inCharBuf)
                                  :inStream.read(inByteBuf);
                        inOff = 0;
                        if (inLimit < = 0) {
                            return len;
                        }
                    }
                    if (precedingBackslash) {
                        len -= 1;
                        //skip the leading whitespace characters in following line
                        skipWhiteSpace = true;
                        appendedLineBegin = true;
                        precedingBackslash = false;
                        if (c == '\r") {
                            skipLF = true;
                        }
                    } else {
                        return len;
                    }
                }
            }
}