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import uuid
from django.utils import lru_cache
class IntConverter:
regex = '[0-9]+'
def to_python(self, value):
return int(value)
def to_url(self, value):
return str(value)
class StringConverter:
regex = '[^/]+'
def to_python(self, value):
return value
def to_url(self, value):
return value
class UUIDConverter:
regex = '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'
def to_python(self, value):
return uuid.UUID(value)
def to_url(self, value):
return str(value)
class SlugConverter(StringConverter):
regex = '[-a-zA-Z0-9_]+'
class PathConverter(StringConverter):
regex = '.+'
DEFAULT_CONVERTERS = {
'int': IntConverter(),
'path': PathConverter(),
'slug': SlugConverter(),
'str': StringConverter(),
'uuid': UUIDConverter(),
}
REGISTERED_CONVERTERS = {}
def register_converter(converter, type_name):
REGISTERED_CONVERTERS[type_name] = converter()
get_converters.cache_clear()
@lru_cache.lru_cache(maxsize=None)
def get_converters():
converters = {}
converters.update(DEFAULT_CONVERTERS)
converters.update(REGISTERED_CONVERTERS)
return converters
def get_converter(raw_converter):
return get_converters()[raw_converter]