Class: MACAddr
- Inherits:
-
Object
- Object
- MACAddr
- Defined in:
- lib/netutils/macaddr.rb
Constant Summary collapse
- NBBY =
8
- Length =
6
Instance Method Summary collapse
- #[](n, len) ⇒ Object
-
#initialize(s) ⇒ MACAddr
constructor
A new instance of MACAddr.
- #to_s(sep = '.', step = 2) ⇒ Object
Constructor Details
#initialize(s) ⇒ MACAddr
Returns a new instance of MACAddr.
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# File 'lib/netutils/macaddr.rb', line 5 def initialize(s) s = s.delete('-.:') raise if s =~ /[^0-9a-z]/i # XXX EINVAL v = s.hex raise if v > 0xffffffffffff # XXX ERANGE @addr = v end |
Instance Method Details
#[](n, len) ⇒ Object
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# File 'lib/netutils/macaddr.rb', line 13 def [](n, len) raise if len > Length raise if Length % len != 0 n *= len v = 0 off = 0 while off < len do v <<= NBBY v |= (@addr >> (NBBY * ((Length - 1) - n - off))) & 0xff off += 1 end return v end |
#to_s(sep = '.', step = 2) ⇒ Object
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# File 'lib/netutils/macaddr.rb', line 38 def to_s(sep = '.', step = 2) to_a(step).map { |v| sprintf('%0*x', step * 2, v) }.join(sep) end |