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from django.conf import settings
from django.db import connection
from django.utils.translation import ugettext as _
from modoboa.lib.exceptions import InternalError
def db_table_exists(table):
"""Check if table exists."""
return table in connection.introspection.table_names()
def db_type(cname="default"):
"""Return the type of the *default* database
Supported values : 'postgres', 'mysql', 'sqlite'
:param str cname: connection name
:return: a string or None
"""
if cname not in settings.DATABASES:
raise InternalError(
_("Connection to database %s not configured" % cname))
for t in ["postgres", "mysql", "sqlite"]:
if settings.DATABASES[cname]["ENGINE"].find(t) != -1:
return t
return None