def define_and_print(c, string):
"""Defines a new variable with an unique name
for 'string', and prints it to the screen
"""
if not string or not string.strip('"'):
return
# First try finding an existing string variable with the same content
# that we wish, if it exists, don't waste memory creating yet another one
enc, _ = Variable.escape_string(string)
var = next((v for v in c.variables.values() if v.value == enc), None)
if not var:
# No luck, create a new variable TODO This will escape the string again!
var = Variable(c.get_uid(), 'string', string)
c.add_variable(var)
# Now we have an existing variable with the content we want to show
c.add_code([f'lea dx, {var.name}', f'int 21h'])
