Added proper installer

escpos/exceptions.py

@@ -0,0 +1,80 @@
+""" ESC/POS Exceptions classes """
+
+import os
+
+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"