Package DebTorrent :: Module bitfield :: Class Bitfield

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Class Bitfield

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A bitfield, a indicating the pieces a peer has.

Instance Methods

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__init__(self, length=None, bitstring=None, copyfrom=None)

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__setitem__(self, index, val)
Set one of the bitfield entries.

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boolean

__getitem__(self, index)
Get one of the bitfield entries.

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int

__len__(self)
Get the length of the bitfield.

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string

tostring(self)
Convert the bitfield to a string

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boolean

complete(self)
Check if the bitfield is all true.

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Instance Variables

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list of boolean array
the bitfield

int length
the length of the bitfield

int numfalse
the number of false entries in the bitfield

Method Details

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init(self, length=None, bitstring=None, copyfrom=None)
(Constructor)

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Parameters:

length (int) - the length of the bitfield to create (optional, if missing use length of copyfrom)
bitstring (string) - the bitfield string to initialize the bitfield from (optional, default is to initialize all to false)
copyfrom (Bitfield) - another bitfield to make a copy of (optional, default is to create a new empty one)

setitem(self, index, val)
(Index assignment operator)

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Set one of the bitfield entries.

Parameters:

index (int) - the index to set
val (boolean) - the value to set to

getitem(self, index)
(Indexing operator)

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Get one of the bitfield entries.

Parameters:

index (int) - the index to get

Returns: boolean

the value of the bitfield entry

len(self)
(Length operator)

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Get the length of the bitfield.

Returns: int: the length of the bitfield

tostring(self)

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Convert the bitfield to a string

Returns: string: the bitfield represented as a string

complete(self)

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Check if the bitfield is all true.

Returns: boolean: whether the bitfield is complete (all true)

Class Bitfield

__init__(self, length=None, bitstring=None, copyfrom=None) (Constructor)

__setitem__(self, index, val) (Index assignment operator)

__getitem__(self, index) (Indexing operator)

__len__(self) (Length operator)

tostring(self)

complete(self)

init(self, length=None, bitstring=None, copyfrom=None)
(Constructor)

setitem(self, index, val)
(Index assignment operator)

getitem(self, index)
(Indexing operator)

len(self)
(Length operator)