Module: Utils

Defined in:
lib/czmq-ffi/utils.rb

Class Method Summary collapse

Class Method Details

.extract_string(ffi_str_pointer) ⇒ Object 



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# File 'lib/czmq-ffi/utils.rb', line 4

def self.extract_string(ffi_str_pointer)
  # Make sure we don't try to extract a string from a NULL pointer.
  return nil if ffi_str_pointer.null? # || ffi_str_pointer.nil?

  # Read the string pointed by ffi_str_pointer.
  str = ffi_str_pointer.read_string

  # The read_string method (actually, the str_new C function nested
  # inside it) makes a deep copy, so we can safely free ffi_str_pointer.
  LibC.free(ffi_str_pointer)

  # Return the string we extracted from ffi_str_pointer.
  str
end