Irkinson/Ve-tro-01

class _StringDataGeneration(object):

def __init__(self):
    self._overall_pattern = re.compile(
        r'((?:[dcw]{1}(?!\*\d+))|(?:[dcw]{1}(?:\*\d+))|[\D\W\S])')
    self._expression_pattern = re.compile(r'[dcw]{1}(?:\*\d+)')

    self.SUPPORTED_CHARS = {
        'c': self._generate_chars,
        'd': self._generate_numbers,
        'w': self._generate_chars_and_numbers,
    }

def get_random_string_by_pattern(self, format):
    """Generate random string by pattern:
    Examples:
    | ${string} | Get Random String By Pattern | ddd*10d-c*2ccc-d*2-cc*2-w-w*5ww | """
    groups = self._overall_pattern.findall(format)
    return "".join(map(self._replace, groups))

def _replace(self, pattern):
    if self._expression_pattern.search(pattern):
        parsed_expression = pattern.split('*')
        return self.SUPPORTED_CHARS[parsed_expression[0]](int(parsed_expression[1]))
    elif pattern in self.SUPPORTED_CHARS.keys():
        return self.SUPPORTED_CHARS[pattern]()
    else:
        return pattern

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