Method: FFI::Pointer#read_string

Defined in:
lib/ffi/pointer.rb

#read_string(len = nil) ⇒ String

Read pointer’s contents as a string, or the first len bytes of the equivalent string if len is not nil.

Parameters:

  • len (nil, Integer) (defaults to: nil) —

    length of string to return

Returns:

  • (String) 


57
58
59
60
61
62
63
64
 
# File 'lib/ffi/pointer.rb', line 57

def read_string(len=nil)
  if len
    return ''.b if len == 0
    get_bytes(0, len)
  else
    get_string(0)
  end
end