Class Dnsruby::Bitmap
In: lib/dnsruby/bitmap.rb
Parent: Object

Instances of this class can be created that will hold on to bitmap data and be used to test bits and convert to other formats.

Where an array is used to represent bits, the first element (0) will be the high bit and the last element will be the low (1‘s column) bit.

Methods

==   from_binary_string   from_bit_array   from_number   from_place_value_array   from_set_bit_position_array   new   number=   to_binary_string   to_bit_array   to_place_value_array   to_set_bit_position_array  

Attributes

number  [R]  This is the internal representation of the bitmap value:

Public Class methods

from_binary_string(string)

Creates an instance from a binary string (e.g. "\x0C").

from_bit_array(array)

Creates an instance from a bit array (e.g. [1, 0, 0, 1])

from_number(number)

Creates an instance from a nonnegative number.

from_place_value_array(array)

Creates an instance from a value array (e.g. [8, 0, 0, 1])

from_set_bit_position_array(array)

Creates an instance from an array of positions for the bits that are set (e.g. [0, 3])

Public Instance methods

number=(new_number)

Set a new value to number, validating first that it is nonnegative.

to_binary_string(min_length = 0)

Returns the instance‘s value as a binary string (e.g. "\x0C")

to_bit_array()

Returns the instance‘s value as an array of bit column place values (e.g. [8, 0, 0, 1])

to_place_value_array()

Returns the instance‘s value as an array of bit column values (e.g. [8, 0, 0, 1])

to_set_bit_position_array()

Returns the instance‘s value as an array of positions for the bits that are set (e.g. [0, 3])

[Validate]