Method read

app/src/main/java/com/sun/mail/util/QDecoderStream.java:50–69

Read the next decoded byte from this input stream. The byte is returned as an int in the range 0 to 255 . If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is availa

()

     * @exception  IOException  if an I/O error occurs.
     */
    @Override
    public int read() throws IOException {
	int c = in.read();

	if (c == '_') // Return '_' as ' '
	    return ' ';
	else if (c == '=') {
	    // QP Encoded atom. Get the next two bytes ..
	    ba[0] = (byte)in.read();
	    ba[1] = (byte)in.read();
	    // .. and decode them
	    try {
		return ASCIIUtility.parseInt(ba, 0, 2, 16);
	    } catch (NumberFormatException nex) {
		throw new DecodingException(
			"QDecoder: Error in QP stream " + nex.getMessage());
	    }
	} else
	    return c;
    }
}