mirror of
https://github.com/moparisthebest/SickRage
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171 lines
5.8 KiB
Python
171 lines
5.8 KiB
Python
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# connectors/pyodbc.py
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# Copyright (C) 2005-2014 the SQLAlchemy authors and contributors <see AUTHORS file>
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#
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# This module is part of SQLAlchemy and is released under
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# the MIT License: http://www.opensource.org/licenses/mit-license.php
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from . import Connector
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from .. import util
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import sys
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import re
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class PyODBCConnector(Connector):
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driver = 'pyodbc'
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supports_sane_multi_rowcount = False
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if util.py2k:
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# PyODBC unicode is broken on UCS-4 builds
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supports_unicode = sys.maxunicode == 65535
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supports_unicode_statements = supports_unicode
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supports_native_decimal = True
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default_paramstyle = 'named'
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# for non-DSN connections, this should
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# hold the desired driver name
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pyodbc_driver_name = None
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# will be set to True after initialize()
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# if the freetds.so is detected
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freetds = False
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# will be set to the string version of
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# the FreeTDS driver if freetds is detected
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freetds_driver_version = None
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# will be set to True after initialize()
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# if the libessqlsrv.so is detected
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easysoft = False
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def __init__(self, supports_unicode_binds=None, **kw):
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super(PyODBCConnector, self).__init__(**kw)
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self._user_supports_unicode_binds = supports_unicode_binds
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@classmethod
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def dbapi(cls):
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return __import__('pyodbc')
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def create_connect_args(self, url):
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opts = url.translate_connect_args(username='user')
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opts.update(url.query)
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keys = opts
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query = url.query
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connect_args = {}
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for param in ('ansi', 'unicode_results', 'autocommit'):
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if param in keys:
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connect_args[param] = util.asbool(keys.pop(param))
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if 'odbc_connect' in keys:
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connectors = [util.unquote_plus(keys.pop('odbc_connect'))]
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else:
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dsn_connection = 'dsn' in keys or \
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('host' in keys and 'database' not in keys)
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if dsn_connection:
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connectors = ['dsn=%s' % (keys.pop('host', '') or \
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keys.pop('dsn', ''))]
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else:
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port = ''
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if 'port' in keys and not 'port' in query:
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port = ',%d' % int(keys.pop('port'))
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connectors = ["DRIVER={%s}" %
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keys.pop('driver', self.pyodbc_driver_name),
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'Server=%s%s' % (keys.pop('host', ''), port),
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'Database=%s' % keys.pop('database', '')]
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user = keys.pop("user", None)
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if user:
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connectors.append("UID=%s" % user)
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connectors.append("PWD=%s" % keys.pop('password', ''))
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else:
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connectors.append("Trusted_Connection=Yes")
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# if set to 'Yes', the ODBC layer will try to automagically
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# convert textual data from your database encoding to your
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# client encoding. This should obviously be set to 'No' if
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# you query a cp1253 encoded database from a latin1 client...
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if 'odbc_autotranslate' in keys:
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connectors.append("AutoTranslate=%s" %
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keys.pop("odbc_autotranslate"))
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connectors.extend(['%s=%s' % (k, v) for k, v in keys.items()])
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return [[";".join(connectors)], connect_args]
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def is_disconnect(self, e, connection, cursor):
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if isinstance(e, self.dbapi.ProgrammingError):
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return "The cursor's connection has been closed." in str(e) or \
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'Attempt to use a closed connection.' in str(e)
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elif isinstance(e, self.dbapi.Error):
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return '[08S01]' in str(e)
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else:
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return False
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def initialize(self, connection):
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# determine FreeTDS first. can't issue SQL easily
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# without getting unicode_statements/binds set up.
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pyodbc = self.dbapi
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dbapi_con = connection.connection
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_sql_driver_name = dbapi_con.getinfo(pyodbc.SQL_DRIVER_NAME)
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self.freetds = bool(re.match(r".*libtdsodbc.*\.so", _sql_driver_name
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))
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self.easysoft = bool(re.match(r".*libessqlsrv.*\.so", _sql_driver_name
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))
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if self.freetds:
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self.freetds_driver_version = dbapi_con.getinfo(
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pyodbc.SQL_DRIVER_VER)
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self.supports_unicode_statements = (
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not util.py2k or
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(not self.freetds and not self.easysoft)
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)
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if self._user_supports_unicode_binds is not None:
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self.supports_unicode_binds = self._user_supports_unicode_binds
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elif util.py2k:
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self.supports_unicode_binds = (
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not self.freetds or self.freetds_driver_version >= '0.91'
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) and not self.easysoft
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else:
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self.supports_unicode_binds = True
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# run other initialization which asks for user name, etc.
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super(PyODBCConnector, self).initialize(connection)
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def _dbapi_version(self):
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if not self.dbapi:
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return ()
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return self._parse_dbapi_version(self.dbapi.version)
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def _parse_dbapi_version(self, vers):
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m = re.match(
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r'(?:py.*-)?([\d\.]+)(?:-(\w+))?',
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vers
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)
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if not m:
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return ()
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vers = tuple([int(x) for x in m.group(1).split(".")])
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if m.group(2):
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vers += (m.group(2),)
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return vers
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def _get_server_version_info(self, connection):
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dbapi_con = connection.connection
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version = []
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r = re.compile('[.\-]')
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for n in r.split(dbapi_con.getinfo(self.dbapi.SQL_DBMS_VER)):
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try:
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version.append(int(n))
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except ValueError:
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version.append(n)
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return tuple(version)
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