(self, str_send, fb=True)
| 16 | # -------------------------------------------------------------------- |
| 17 | # send PCL command to printer, optionally receive response |
| 18 | def cmd(self, str_send, fb=True): |
| 19 | str_recv = "" # response buffer |
| 20 | token = str(random.randrange(2**8, 2**15) * -1) # -256..-32767 |
| 21 | footer = c.ESC + "*s" + token + "X" # echo delimiter |
| 22 | # send command to printer device |
| 23 | try: |
| 24 | cmd_send = c.UEL + c.PCL_HEADER + str_send + footer + c.UEL |
| 25 | # write to logfile |
| 26 | log().write(self.logfile, c.ESC + str_send + os.linesep) |
| 27 | # sent to printer |
| 28 | self.send(cmd_send) |
| 29 | # use random token as delimiter for PCL responses |
| 30 | str_recv = self.recv("ECHO " + token + ".*$", fb) |
| 31 | # crop all PCL lines from received buffer |
| 32 | str_recv = re.sub(r"\x0d?\x0a?\x0c?PCL.*\x0a?", "", str_recv) |
| 33 | return str_recv |
| 34 | |
| 35 | # handle CTRL+C and exceptions |
| 36 | except (KeyboardInterrupt, Exception) as e: |
| 37 | self.reconnect(str(e)) |
| 38 | return "" |
| 39 | |
| 40 | # -------------------------------------------------------------------- |
| 41 | # remove functions not implemented in pcl |
no test coverage detected