yawPyCrypto._StreamBase.InputStream

Package yawPyCrypto :: Module _StreamBase :: Class InputStream

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Class InputStream

object --+    
         |    
StreamBase --+
             |
            InputStream

Known Subclasses:: DecryptStream

Class that implements an input stream. It accepts input data, and tries to read packets from the data. This class should never be instantiated directly.

Method Summary
	`__init__(self)` Initialize the input stream.
a new object with type S, a subtype of T	`__new__(S, ...)`
	`_checkInst(self)` Check the current stream instance.
	`_feedInput(self, data)` Feed input to the stream.
	`_feedOutput(self, data)` Feed data to the output buffer.
	`_feedPacket(self, ptype, pdata)` Function called to feed a packet from the input stream.
	`_finishInput(self)` Finish the input stream by checking whether there is still data waiting or a continuation which is not finished.
	`_StreamBase__getData(self)` Retrieve the data from the output property as a string. (inherited from `StreamBase`)
	`_writeOutput(self, data)` Append data to the output. (inherited from `StreamBase`)

Method Details

init(self)
(Constructor)

Initialize the input stream. This creates the buffers which are needed to accomodate stream fragmentation.

new(S, ...)

Returns:: a new object with type S, a subtype of T

_checkInst(self)

Check the current stream instance.

_feedInput(self, data)

Feed input to the stream. This appends the input to the current stream buffer, and seeks for all packets that can be found therein. It calls the _feedPacket function, which recieves the packet, and the packet type, as read from the stream.

_feedOutput(self, data)

Feed data to the output buffer.

_feedPacket(self, ptype, pdata)

Function called to feed a packet from the input stream. This function by default raises a NotImplementedError to make you aware that it is purely virtual.

_finishInput(self)

Finish the input stream by checking whether there is still data waiting or a continuation which is not finished. In case there is, the stream is invalid.

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