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""" ESC/POS Exceptions classes """
class Error(Exception):
""" Base class for ESC/POS errors """
def __init__(self, msg, status=None):
Exception.__init__(self)
self.msg = msg
self.resultcode = 1
if status is not None:
self.resultcode = status
def __str__(self):
return self.msg
# Result/Exit codes
# 0 = success
# 10 = No Barcode type defined
# 20 = Barcode size values are out of range
# 30 = Barcode text not supplied
# 40 = Image height is too large
# 50 = No string supplied to be printed
# 60 = Invalid pin to send Cash Drawer pulse
class BarcodeTypeError(Error):
def __init__(self, msg=""):
Error.__init__(self, msg)
self.msg = msg
self.resultcode = 10
def __str__(self):
return "No Barcode type is defined"
class BarcodeSizeError(Error):
def __init__(self, msg=""):
Error.__init__(self, msg)
self.msg = msg
self.resultcode = 20
def __str__(self):
return "Barcode size is out of range"
class BarcodeCodeError(Error):
def __init__(self, msg=""):
Error.__init__(self, msg)
self.msg = msg
self.resultcode = 30
def __str__(self):
return "Code was not supplied"
class ImageSizeError(Error):
def __init__(self, msg=""):
Error.__init__(self, msg)
self.msg = msg
self.resultcode = 40
def __str__(self):
return "Image height is longer than 255px and can't be printed"
class TextError(Error):
def __init__(self, msg=""):
Error.__init__(self, msg)
self.msg = msg
self.resultcode = 50
def __str__(self):
return "Text string must be supplied to the text() method"
class CashDrawerError(Error):
def __init__(self, msg=""):
Error.__init__(self, msg)
self.msg = msg
self.resultcode = 60
def __str__(self):
return "Valid pin must be set to send pulse"
class NoStatusError(Error):
def __init__(self, msg=""):
Error.__init__(self, msg)
self.msg = msg
self.resultcode = 70
def __str__(self):
return "Impossible to get status from the printer: " + str(self.msg)
class TicketNotPrinted(Error):
def __init__(self, msg=""):
Error.__init__(self, msg)
self.msg = msg
self.resultcode = 80
def __str__(self):
return "A part of the ticket was not been printed: " + str(self.msg)
class NoDeviceError(Error):
def __init__(self, msg=""):
Error.__init__(self, msg)
self.msg = msg
self.resultcode = 90
def __str__(self):
return str(self.msg)
class HandleDeviceError(Error):
def __init__(self, msg=""):
Error.__init__(self, msg)
self.msg = msg
self.resultcode = 100
def __str__(self):
return str(self.msg)
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