Method: Redis::Connection::Memory#sscan

Defined in:

lib/redis/connection/memory.rb

#sscan(key, start_cursor, *args) ⇒ Object

# File 'lib/redis/connection/memory.rb', line 673

def sscan(key, start_cursor, *args)
  data_type_check(key, ::Set)
  return ["0", []] unless data[key]

  match = "*"
  count = 10

  if args.size.odd?
    raise_argument_error('sscan')
  end

  if idx = args.index("MATCH")
    match = args[idx + 1]
  end

  if idx = args.index("COUNT")
    count = args[idx + 1]
  end

  start_cursor = start_cursor.to_i

  cursor = start_cursor
  next_keys = []

  if start_cursor + count >= data[key].length
    next_keys = (data[key].to_a)[start_cursor..-1]
    cursor = 0
  else
    cursor = start_cursor + count
    next_keys = (data[key].to_a)[start_cursor..cursor-1]
  end

  filtered_next_keys = next_keys.select{ |k,v| File.fnmatch(match, k)}
  result = filtered_next_keys.flatten.map(&:to_s)

  return ["#{cursor}", result]
end