Method: Rex::Struct2::SStruct#from_s

Defined in:
lib/rex/struct2/s_struct.rb

#from_s(obytes) ⇒ Object 



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# File 'lib/rex/struct2/s_struct.rb', line 72

def from_s(obytes)
  # make my own copy so I can chop it up
  bytes = obytes.dup
  length = 0

  # I don't think we should call update_restraint here, but
  # I could have mis thought or something

  # if we have a restraint (and if there is a val) truncate
  if restraint
    max = restraint.max
    bytes = bytes.slice(0, max) if max
  end

  elements.each { |e|
    used = e.from_s(bytes)
    return if !used
    bytes.slice!(0, used)
    length += used
  }

  # make sure we matched out min restraint, else return failure
  if restraint
    min = restraint.min
    return if min && length < min
  end

  # I guess this is me getting "set", so I should have a value
  # and I should update my restraints on set
  self.value = obytes.slice(0, length)

  self.leftover = bytes
  return(length)
end