mirror of https://github.com/morpheus65535/bazarr
248 lines
8.3 KiB
Python
248 lines
8.3 KiB
Python
# connectors/pyodbc.py
|
|
# Copyright (C) 2005-2023 the SQLAlchemy authors and contributors
|
|
# <see AUTHORS file>
|
|
#
|
|
# This module is part of SQLAlchemy and is released under
|
|
# the MIT License: https://www.opensource.org/licenses/mit-license.php
|
|
|
|
from __future__ import annotations
|
|
|
|
import re
|
|
from types import ModuleType
|
|
import typing
|
|
from typing import Any
|
|
from typing import Dict
|
|
from typing import List
|
|
from typing import Optional
|
|
from typing import Tuple
|
|
from typing import Union
|
|
from urllib.parse import unquote_plus
|
|
|
|
from . import Connector
|
|
from .. import ExecutionContext
|
|
from .. import pool
|
|
from .. import util
|
|
from ..engine import ConnectArgsType
|
|
from ..engine import Connection
|
|
from ..engine import interfaces
|
|
from ..engine import URL
|
|
from ..sql.type_api import TypeEngine
|
|
|
|
if typing.TYPE_CHECKING:
|
|
from ..engine.interfaces import IsolationLevel
|
|
|
|
|
|
class PyODBCConnector(Connector):
|
|
driver = "pyodbc"
|
|
|
|
# this is no longer False for pyodbc in general
|
|
supports_sane_rowcount_returning = True
|
|
supports_sane_multi_rowcount = False
|
|
|
|
supports_native_decimal = True
|
|
default_paramstyle = "named"
|
|
|
|
fast_executemany = False
|
|
|
|
# for non-DSN connections, this *may* be used to
|
|
# hold the desired driver name
|
|
pyodbc_driver_name: Optional[str] = None
|
|
|
|
dbapi: ModuleType
|
|
|
|
def __init__(self, use_setinputsizes: bool = False, **kw: Any):
|
|
super().__init__(**kw)
|
|
if use_setinputsizes:
|
|
self.bind_typing = interfaces.BindTyping.SETINPUTSIZES
|
|
|
|
@classmethod
|
|
def import_dbapi(cls) -> ModuleType:
|
|
return __import__("pyodbc")
|
|
|
|
def create_connect_args(self, url: URL) -> ConnectArgsType:
|
|
opts = url.translate_connect_args(username="user")
|
|
opts.update(url.query)
|
|
|
|
keys = opts
|
|
|
|
query = url.query
|
|
|
|
connect_args: Dict[str, Any] = {}
|
|
connectors: List[str]
|
|
|
|
for param in ("ansi", "unicode_results", "autocommit"):
|
|
if param in keys:
|
|
connect_args[param] = util.asbool(keys.pop(param))
|
|
|
|
if "odbc_connect" in keys:
|
|
connectors = [unquote_plus(keys.pop("odbc_connect"))]
|
|
else:
|
|
|
|
def check_quote(token: str) -> str:
|
|
if ";" in str(token) or str(token).startswith("{"):
|
|
token = "{%s}" % token.replace("}", "}}")
|
|
return token
|
|
|
|
keys = {k: check_quote(v) for k, v in keys.items()}
|
|
|
|
dsn_connection = "dsn" in keys or (
|
|
"host" in keys and "database" not in keys
|
|
)
|
|
if dsn_connection:
|
|
connectors = [
|
|
"dsn=%s" % (keys.pop("host", "") or keys.pop("dsn", ""))
|
|
]
|
|
else:
|
|
port = ""
|
|
if "port" in keys and "port" not in query:
|
|
port = ",%d" % int(keys.pop("port"))
|
|
|
|
connectors = []
|
|
driver = keys.pop("driver", self.pyodbc_driver_name)
|
|
if driver is None and keys:
|
|
# note if keys is empty, this is a totally blank URL
|
|
util.warn(
|
|
"No driver name specified; "
|
|
"this is expected by PyODBC when using "
|
|
"DSN-less connections"
|
|
)
|
|
else:
|
|
connectors.append("DRIVER={%s}" % driver)
|
|
|
|
connectors.extend(
|
|
[
|
|
"Server=%s%s" % (keys.pop("host", ""), port),
|
|
"Database=%s" % keys.pop("database", ""),
|
|
]
|
|
)
|
|
|
|
user = keys.pop("user", None)
|
|
if user:
|
|
connectors.append("UID=%s" % user)
|
|
pwd = keys.pop("password", "")
|
|
if pwd:
|
|
connectors.append("PWD=%s" % pwd)
|
|
else:
|
|
authentication = keys.pop("authentication", None)
|
|
if authentication:
|
|
connectors.append("Authentication=%s" % authentication)
|
|
else:
|
|
connectors.append("Trusted_Connection=Yes")
|
|
|
|
# if set to 'Yes', the ODBC layer will try to automagically
|
|
# convert textual data from your database encoding to your
|
|
# client encoding. This should obviously be set to 'No' if
|
|
# you query a cp1253 encoded database from a latin1 client...
|
|
if "odbc_autotranslate" in keys:
|
|
connectors.append(
|
|
"AutoTranslate=%s" % keys.pop("odbc_autotranslate")
|
|
)
|
|
|
|
connectors.extend(["%s=%s" % (k, v) for k, v in keys.items()])
|
|
|
|
return ((";".join(connectors),), connect_args)
|
|
|
|
def is_disconnect(
|
|
self,
|
|
e: Exception,
|
|
connection: Optional[
|
|
Union[pool.PoolProxiedConnection, interfaces.DBAPIConnection]
|
|
],
|
|
cursor: Optional[interfaces.DBAPICursor],
|
|
) -> bool:
|
|
if isinstance(e, self.dbapi.ProgrammingError):
|
|
return "The cursor's connection has been closed." in str(
|
|
e
|
|
) or "Attempt to use a closed connection." in str(e)
|
|
else:
|
|
return False
|
|
|
|
def _dbapi_version(self) -> interfaces.VersionInfoType:
|
|
if not self.dbapi:
|
|
return ()
|
|
return self._parse_dbapi_version(self.dbapi.version)
|
|
|
|
def _parse_dbapi_version(self, vers: str) -> interfaces.VersionInfoType:
|
|
m = re.match(r"(?:py.*-)?([\d\.]+)(?:-(\w+))?", vers)
|
|
if not m:
|
|
return ()
|
|
vers_tuple: interfaces.VersionInfoType = tuple(
|
|
[int(x) for x in m.group(1).split(".")]
|
|
)
|
|
if m.group(2):
|
|
vers_tuple += (m.group(2),)
|
|
return vers_tuple
|
|
|
|
def _get_server_version_info(
|
|
self, connection: Connection
|
|
) -> interfaces.VersionInfoType:
|
|
# NOTE: this function is not reliable, particularly when
|
|
# freetds is in use. Implement database-specific server version
|
|
# queries.
|
|
dbapi_con = connection.connection.dbapi_connection
|
|
version: Tuple[Union[int, str], ...] = ()
|
|
r = re.compile(r"[.\-]")
|
|
for n in r.split(dbapi_con.getinfo(self.dbapi.SQL_DBMS_VER)): # type: ignore[union-attr] # noqa: E501
|
|
try:
|
|
version += (int(n),)
|
|
except ValueError:
|
|
pass
|
|
return tuple(version)
|
|
|
|
def do_set_input_sizes(
|
|
self,
|
|
cursor: interfaces.DBAPICursor,
|
|
list_of_tuples: List[Tuple[str, Any, TypeEngine[Any]]],
|
|
context: ExecutionContext,
|
|
) -> None:
|
|
# the rules for these types seems a little strange, as you can pass
|
|
# non-tuples as well as tuples, however it seems to assume "0"
|
|
# for the subsequent values if you don't pass a tuple which fails
|
|
# for types such as pyodbc.SQL_WLONGVARCHAR, which is the datatype
|
|
# that ticket #5649 is targeting.
|
|
|
|
# NOTE: as of #6058, this won't be called if the use_setinputsizes
|
|
# parameter were not passed to the dialect, or if no types were
|
|
# specified in list_of_tuples
|
|
|
|
# as of #8177 for 2.0 we assume use_setinputsizes=True and only
|
|
# omit the setinputsizes calls for .executemany() with
|
|
# fast_executemany=True
|
|
|
|
if (
|
|
context.execute_style is interfaces.ExecuteStyle.EXECUTEMANY
|
|
and self.fast_executemany
|
|
):
|
|
return
|
|
|
|
cursor.setinputsizes(
|
|
[
|
|
(dbtype, None, None)
|
|
if not isinstance(dbtype, tuple)
|
|
else dbtype
|
|
for key, dbtype, sqltype in list_of_tuples
|
|
]
|
|
)
|
|
|
|
def get_isolation_level_values(
|
|
self, dbapi_connection: interfaces.DBAPIConnection
|
|
) -> List[IsolationLevel]:
|
|
return super().get_isolation_level_values(dbapi_connection) + [ # type: ignore # noqa: E501
|
|
"AUTOCOMMIT"
|
|
]
|
|
|
|
def set_isolation_level(
|
|
self,
|
|
dbapi_connection: interfaces.DBAPIConnection,
|
|
level: IsolationLevel,
|
|
) -> None:
|
|
# adjust for ConnectionFairy being present
|
|
# allows attribute set e.g. "connection.autocommit = True"
|
|
# to work properly
|
|
|
|
if level == "AUTOCOMMIT":
|
|
dbapi_connection.autocommit = True
|
|
else:
|
|
dbapi_connection.autocommit = False
|
|
super().set_isolation_level(dbapi_connection, level)
|