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# Copyright (c) 2016 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "VK scripts" project.
# For details, see https://github.com/egor-tensin/vk-scripts.
# Distributed under the MIT License.
from enum import Enum
from . import backend
class Format(Enum):
CSV = 'csv'
LOG = 'log'
NULL = 'null'
def create_writer(self, fd):
if self is Format.CSV:
return backend.csv.Writer(fd)
elif self is Format.LOG:
return backend.log.Writer(fd)
elif self is Format.NULL:
return backend.null.Writer(fd)
else:
raise NotImplementedError('unsupported database format: ' + str(self))
def create_reader(self, fd):
if self is Format.CSV:
return backend.csv.Reader(fd)
elif self is Format.LOG:
raise NotImplementedError()
elif self is Format.NULL:
return backend.null.Reader(fd)
else:
raise NotImplementedError('unsupported database format: ' + str(self))
def __str__(self):
return self.value
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