Method: CTypes::Bitfield.unpack_one

Defined in:
lib/ctypes/bitfield.rb

.unpack_one(buf, endian: default_endian) ⇒ Bitfield

convert a String containing the binary represention of a c type into the equivalent ruby type

Parameters:

  • buf (::String) —

    bytes that make up the type

  • endian (Symbol) (defaults to: default_endian) —

    endian of data within buf

Returns:



131
132
133
134
135
136
137
138
139
140
141
 
# File 'lib/ctypes/bitfield.rb', line 131

def self.unpack_one(buf, endian: default_endian)
  value, rest = @type.unpack_one(buf, endian:)
  out = _new
  @bits.each do |(name, offset, mask, signed, var)|
    v = (value >> offset) & mask
    v |= (-1 << signed) | v if signed && v[signed - 1] == 1
    out.instance_variable_set(var, v)
  end

  [out, rest]
end