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opt
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hc_python
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lib64
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python3.8
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site-packages
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mysql
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connector
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Filename :
catch23.py
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# MySQL Connector/Python - MySQL driver written in Python. # Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. # MySQL Connector/Python is licensed under the terms of the GPLv2 # <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most # MySQL Connectors. There are special exceptions to the terms and # conditions of the GPLv2 as it is applied to this software, see the # FOSS License Exception # <http://www.mysql.com/about/legal/licensing/foss-exception.html>. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA """Python v2 to v3 migration module""" from decimal import Decimal import struct import sys from .custom_types import HexLiteral # pylint: disable=E0602,E1103 PY2 = sys.version_info[0] == 2 if PY2: NUMERIC_TYPES = (int, float, Decimal, HexLiteral, long) INT_TYPES = (int, long) UNICODE_TYPES = (unicode,) STRING_TYPES = (str, unicode) BYTE_TYPES = (bytearray,) else: NUMERIC_TYPES = (int, float, Decimal, HexLiteral) INT_TYPES = (int,) UNICODE_TYPES = (str,) STRING_TYPES = (str,) BYTE_TYPES = (bytearray, bytes) def init_bytearray(payload=b'', encoding='utf-8'): """Initializes a bytearray from the payload""" if isinstance(payload, bytearray): return payload if PY2: return bytearray(payload) if isinstance(payload, int): return bytearray(payload) elif not isinstance(payload, bytes): try: return bytearray(payload.encode(encoding=encoding)) except AttributeError: raise ValueError("payload must be a str or bytes") return bytearray(payload) def isstr(obj): """Returns whether a variable is a string""" if PY2: return isinstance(obj, basestring) else: return isinstance(obj, str) def isunicode(obj): """Returns whether a variable is a of unicode type""" if PY2: return isinstance(obj, unicode) else: return isinstance(obj, str) if PY2: def struct_unpack(fmt, buf): """Wrapper around struct.unpack handling buffer as bytes and strings""" if isinstance(buf, (bytearray, bytes)): return struct.unpack_from(fmt, buffer(buf)) return struct.unpack_from(fmt, buf) else: struct_unpack = struct.unpack # pylint: disable=C0103 def make_abc(base_class): """Decorator used to create a abstract base class We use this decorator to create abstract base classes instead of using the abc-module. The decorator makes it possible to do the same in both Python v2 and v3 code. """ def wrapper(class_): """Wrapper""" attrs = class_.__dict__.copy() for attr in '__dict__', '__weakref__': attrs.pop(attr, None) # ignore missing attributes bases = class_.__bases__ if PY2: attrs['__metaclass__'] = class_ else: bases = (class_,) + bases return base_class(class_.__name__, bases, attrs) return wrapper