def get_description(self):
# Quick workaround to avoid calling FiscalPrinter.setup(), since that
# may send commands to the ECF, and we just need the description.
# TODO: Improve stoqdrivers so we can get this easyer
port = VirtualPort()
port.setTimeout = lambda x: True
port.setParity = lambda x: True
port.setWriteTimeout = lambda x: True
driver = BasePrinter(brand=self.brand, model=self.model, port=port)
return driver.get_model_name()
def get_description(self):
# Quick workaround to avoid calling FiscalPrinter.setup(), since that
# may send commands to the ECF, and we just need the description.
# TODO: Improve stoqdrivers so we can get this easyer
port = VirtualPort()
port.setTimeout = lambda x: True
port.setParity = lambda x: True
port.setWriteTimeout = lambda x: True
driver = BasePrinter(brand=self.brand, model=self.model, port=port)
return driver.get_model_name()
def get_interface(self):
""" Based on the column values instantiate the stoqdrivers interface
for the device itself.
"""
if self.device_name == '/dev/null':
interface = 'serial'
port = VirtualPort()
product_id = vendor_id = None
elif self.device_name.startswith('usb:'):
# USB device
interface, vendor_id, product_id = self.device_name.split(':')
vendor_id = int(vendor_id, 16)
product_id = int(product_id, 16)
port = None
else:
# Serial device
interface = 'serial'
port = self._get_serial_port()
product_id = vendor_id = None
if self.type == DeviceSettings.CHEQUE_PRINTER_DEVICE:
return ChequePrinter(brand=self.brand, model=self.model, port=port)
elif self.type == DeviceSettings.NON_FISCAL_PRINTER_DEVICE:
return NonFiscalPrinter(brand=self.brand, model=self.model,
port=port, interface=interface,
product_id=product_id, vendor_id=vendor_id)
elif self.type == DeviceSettings.SCALE_DEVICE:
return Scale(brand=self.brand, model=self.model,
device=self.device_name, port=port)
raise DatabaseInconsistency("The device type referred by this "
"record (%r) is invalid, given %r."
% (self, self.type))
def _create_port(self, baudrate):
if self._device_name == '/dev/null':
return VirtualPort()
port = SerialPort(device=self._device_name, baudrate=baudrate)
port.writeTimeout = 5
if platform.system() != 'Windows':
port.nonblocking()
return port
def get_fiscal_driver(self):
if self.brand == 'virtual':
port = VirtualPort()
else:
port = SerialPort(device=self.device_name, baudrate=self.baudrate)
return FiscalPrinter(brand=self.brand, model=self.model, port=port)
