smartcard.sw.ErrorCheckingChain.ErrorCheckingChain

class documentation

class ErrorCheckingChain:

Constructor: ErrorCheckingChain(chain, strategy)

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The error checking chain is a list of response apdu status word (sw1, sw2) error check strategies. Each strategy in the chain is called until an error is detected. A smartcard.sw.SWExceptions exception is raised when an error is detected. No exception is raised if no error is detected.

Implementation derived from Bruce Eckel, Thinking in Python. The ErrorCheckingChain implements the Chain Of Responsibility design pattern.

Method __call__ Called to test data, sw1 and sw2 for error on the chain.
Method __init__ constructor. Appends a strategy to the ErrorCheckingChain chain.
Method addFilterException Add an exception filter to the error checking chain.
Method end Returns True if this is the end of the error checking strategy chain.
Method next Returns next error checking strategy.
Instance Variable chain Undocumented
Instance Variable excludes Undocumented
Instance Variable strategy Undocumented
def __call__(self, data, sw1, sw2):

Called to test data, sw1 and sw2 for error on the chain.

def __init__(self, chain, strategy):

constructor. Appends a strategy to the ErrorCheckingChain chain.

def addFilterException(self, exClass):

Add an exception filter to the error checking chain.

Parameters
exClassthe exception to exclude, e.g. smartcard.sw.SWExceptions.WarningProcessingException A filtered exception will not be raised when the sw1,sw2 conditions that would raise the exception are met.
def end(self):

Returns True if this is the end of the error checking strategy chain.

def next(self):

Returns next error checking strategy.

chain =

Undocumented

excludes: list =

Undocumented

strategy =

Undocumented