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# -*- ruby -*-
# frozen_string_literal: true
require 'ipaddr'
module PG
module TextEncoder
# This is a encoder class for conversion of Ruby IPAddr values to PostgreSQL inet type.
#
# As soon as this class is used, it requires the ruby standard library 'ipaddr'.
class Inet < SimpleEncoder
def encode(value)
case value
when IPAddr
default_prefix = (value.family == Socket::AF_INET ? 32 : 128)
s = value.to_s
if value.respond_to?(:prefix)
prefix = value.prefix
else
range = value.to_range
prefix = default_prefix - Math.log(((range.end.to_i - range.begin.to_i) + 1), 2).to_i
end
s << "/" << prefix.to_s if prefix != default_prefix
s
else
value
end
end
end
end
end # module PG
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