43 lines
984 B
Ruby
43 lines
984 B
Ruby
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# frozen_string_literal: true
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class PacketFlags
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attr_reader :bits, :hash
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def initialize(data)
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@hash = {}
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@bits = ''
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if data.instance_of?(Hash)
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@bits = parse_hash(data)
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@hash = data
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elsif data.instance_of?(String)
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@hash = parse_bits(data)
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@bits = data
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else
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raise 'Flags have to be hash or string'
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end
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end
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def parse_hash(hash)
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bits = ''
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bits += hash[:connection] ? '1' : '0'
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bits += hash[:compressed] ? '1' : '0'
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bits += hash[:resend] ? '1' : '0'
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bits += hash[:control] ? '1' : '0'
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bits
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end
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def parse_bits(four_bit_str)
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# takes a 4 character string
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# representing the middle of the first byte sent
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# in binary representation
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#
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# and creates a hash out of it
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hash = {}
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hash[:connection] = four_bit_str[0] == '1'
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hash[:compressed] = four_bit_str[1] == '1'
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hash[:resend] = four_bit_str[2] == '1'
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hash[:control] = four_bit_str[3] == '1'
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hash
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end
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end
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