Module: IPLibrary::IP2integer

Defined in:
lib/ip_library/ip2integer.rb

Constant Summary collapse

IP_REGEXP = 
/^(?:(?:2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(?:2[0-4]\d|25[0-5]|[01]?\d\d?)$/
IP_PERFIX_REGEXP = 
/^(?:(?:2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}$/

Class Method Summary collapse

Class Method Details

.int2ip(intip) ⇒ Object

Converts an INTEGER to IP string



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# File 'lib/ip_library/ip2integer.rb', line 19

def int2ip(intip)
  ip_segments = [3, 2, 1, 0].map { |i| (intip & (255 << i*8)) >> i*8 }
  (ip_str= ip_segments.join('.')) =~ IP_REGEXP ? ip_str : ''
end

.ip2int(ip) ⇒ Object

Converts an IP string to integer



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# File 'lib/ip_library/ip2integer.rb', line 11

def ip2int(ip)
  return 0 unless ip =~ IP_REGEXP
  ip_segments = []
  ip.split('.').each_with_index { |ip_seg, i| ip_segments << (ip_seg.to_i << 8*(3 - i)) }
  ip_segments.inject(0) { |sum, ip_segment|  sum = sum|ip_segment }
end