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Copy path_compat_pickle.py
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251 lines (233 loc) · 8.54 KB
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# This module is used to map the old Python 2 names to the new names used in
# Python 3 for the pickle module. This needed to make pickle streams
# generated with Python 2 loadable by Python 3.
# This is a copy of lib2to3.fixes.fix_imports.MAPPING. We cannot import
# lib2to3 and use the mapping defined there, because lib2to3 uses pickle.
# Thus, this could cause the module to be imported recursively.
IMPORT_MAPPING = {
'__builtin__' : 'builtins',
'copy_reg': 'copyreg',
'Queue': 'queue',
'SocketServer': 'socketserver',
'ConfigParser': 'configparser',
'repr': 'reprlib',
'tkFileDialog': 'tkinter.filedialog',
'tkSimpleDialog': 'tkinter.simpledialog',
'tkColorChooser': 'tkinter.colorchooser',
'tkCommonDialog': 'tkinter.commondialog',
'Dialog': 'tkinter.dialog',
'Tkdnd': 'tkinter.dnd',
'tkFont': 'tkinter.font',
'tkMessageBox': 'tkinter.messagebox',
'ScrolledText': 'tkinter.scrolledtext',
'Tkconstants': 'tkinter.constants',
'Tix': 'tkinter.tix',
'ttk': 'tkinter.ttk',
'Tkinter': 'tkinter',
'markupbase': '_markupbase',
'_winreg': 'winreg',
'thread': '_thread',
'dummy_thread': '_dummy_thread',
'dbhash': 'dbm.bsd',
'dumbdbm': 'dbm.dumb',
'dbm': 'dbm.ndbm',
'gdbm': 'dbm.gnu',
'xmlrpclib': 'xmlrpc.client',
'SimpleXMLRPCServer': 'xmlrpc.server',
'httplib': 'http.client',
'htmlentitydefs' : 'html.entities',
'HTMLParser' : 'html.parser',
'Cookie': 'http.cookies',
'cookielib': 'http.cookiejar',
'BaseHTTPServer': 'http.server',
'test.test_support': 'test.support',
'commands': 'subprocess',
'urlparse' : 'urllib.parse',
'robotparser' : 'urllib.robotparser',
'urllib2': 'urllib.request',
'anydbm': 'dbm',
'_abcoll' : 'collections.abc',
}
# This contains rename rules that are easy to handle. We ignore the more
# complex stuff (e.g. mapping the names in the urllib and types modules).
# These rules should be run before import names are fixed.
NAME_MAPPING = {
('__builtin__', 'xrange'): ('builtins', 'range'),
('__builtin__', 'reduce'): ('functools', 'reduce'),
('__builtin__', 'intern'): ('sys', 'intern'),
('__builtin__', 'unichr'): ('builtins', 'chr'),
('__builtin__', 'unicode'): ('builtins', 'str'),
('__builtin__', 'long'): ('builtins', 'int'),
('itertools', 'izip'): ('builtins', 'zip'),
('itertools', 'imap'): ('builtins', 'map'),
('itertools', 'ifilter'): ('builtins', 'filter'),
('itertools', 'ifilterfalse'): ('itertools', 'filterfalse'),
('itertools', 'izip_longest'): ('itertools', 'zip_longest'),
('UserDict', 'IterableUserDict'): ('collections', 'UserDict'),
('UserList', 'UserList'): ('collections', 'UserList'),
('UserString', 'UserString'): ('collections', 'UserString'),
('whichdb', 'whichdb'): ('dbm', 'whichdb'),
('_socket', 'fromfd'): ('socket', 'fromfd'),
('_multiprocessing', 'Connection'): ('multiprocessing.connection', 'Connection'),
('multiprocessing.process', 'Process'): ('multiprocessing.context', 'Process'),
('multiprocessing.forking', 'Popen'): ('multiprocessing.popen_fork', 'Popen'),
('urllib', 'ContentTooShortError'): ('urllib.error', 'ContentTooShortError'),
('urllib', 'getproxies'): ('urllib.request', 'getproxies'),
('urllib', 'pathname2url'): ('urllib.request', 'pathname2url'),
('urllib', 'quote_plus'): ('urllib.parse', 'quote_plus'),
('urllib', 'quote'): ('urllib.parse', 'quote'),
('urllib', 'unquote_plus'): ('urllib.parse', 'unquote_plus'),
('urllib', 'unquote'): ('urllib.parse', 'unquote'),
('urllib', 'url2pathname'): ('urllib.request', 'url2pathname'),
('urllib', 'urlcleanup'): ('urllib.request', 'urlcleanup'),
('urllib', 'urlencode'): ('urllib.parse', 'urlencode'),
('urllib', 'urlopen'): ('urllib.request', 'urlopen'),
('urllib', 'urlretrieve'): ('urllib.request', 'urlretrieve'),
('urllib2', 'HTTPError'): ('urllib.error', 'HTTPError'),
('urllib2', 'URLError'): ('urllib.error', 'URLError'),
}
PYTHON2_EXCEPTIONS = (
"ArithmeticError",
"AssertionError",
"AttributeError",
"BaseException",
"BufferError",
"BytesWarning",
"DeprecationWarning",
"EOFError",
"EnvironmentError",
"Exception",
"FloatingPointError",
"FutureWarning",
"GeneratorExit",
"IOError",
"ImportError",
"ImportWarning",
"IndentationError",
"IndexError",
"KeyError",
"KeyboardInterrupt",
"LookupError",
"MemoryError",
"NameError",
"NotImplementedError",
"OSError",
"OverflowError",
"PendingDeprecationWarning",
"ReferenceError",
"RuntimeError",
"RuntimeWarning",
# StandardError is gone in Python 3, so we map it to Exception
"StopIteration",
"SyntaxError",
"SyntaxWarning",
"SystemError",
"SystemExit",
"TabError",
"TypeError",
"UnboundLocalError",
"UnicodeDecodeError",
"UnicodeEncodeError",
"UnicodeError",
"UnicodeTranslateError",
"UnicodeWarning",
"UserWarning",
"ValueError",
"Warning",
"ZeroDivisionError",
)
try:
WindowsError
except NameError:
pass
else:
PYTHON2_EXCEPTIONS += ("WindowsError",)
for excname in PYTHON2_EXCEPTIONS:
NAME_MAPPING[("exceptions", excname)] = ("builtins", excname)
MULTIPROCESSING_EXCEPTIONS = (
'AuthenticationError',
'BufferTooShort',
'ProcessError',
'TimeoutError',
)
for excname in MULTIPROCESSING_EXCEPTIONS:
NAME_MAPPING[("multiprocessing", excname)] = ("multiprocessing.context", excname)
# Same, but for 3.x to 2.x
REVERSE_IMPORT_MAPPING = dict((v, k) for (k, v) in IMPORT_MAPPING.items())
assert len(REVERSE_IMPORT_MAPPING) == len(IMPORT_MAPPING)
REVERSE_NAME_MAPPING = dict((v, k) for (k, v) in NAME_MAPPING.items())
assert len(REVERSE_NAME_MAPPING) == len(NAME_MAPPING)
# Non-mutual mappings.
IMPORT_MAPPING.update({
'cPickle': 'pickle',
'_elementtree': 'xml.etree.ElementTree',
'FileDialog': 'tkinter.filedialog',
'SimpleDialog': 'tkinter.simpledialog',
'DocXMLRPCServer': 'xmlrpc.server',
'SimpleHTTPServer': 'http.server',
'CGIHTTPServer': 'http.server',
# For compatibility with broken pickles saved in old Python 3 versions
'UserDict': 'collections',
'UserList': 'collections',
'UserString': 'collections',
'whichdb': 'dbm',
'StringIO': 'io',
'cStringIO': 'io',
})
REVERSE_IMPORT_MAPPING.update({
'_bz2': 'bz2',
'_dbm': 'dbm',
'_functools': 'functools',
'_gdbm': 'gdbm',
'_pickle': 'pickle',
})
NAME_MAPPING.update({
('__builtin__', 'basestring'): ('builtins', 'str'),
('exceptions', 'StandardError'): ('builtins', 'Exception'),
('UserDict', 'UserDict'): ('collections', 'UserDict'),
('socket', '_socketobject'): ('socket', 'SocketType'),
})
REVERSE_NAME_MAPPING.update({
('_functools', 'reduce'): ('__builtin__', 'reduce'),
('tkinter.filedialog', 'FileDialog'): ('FileDialog', 'FileDialog'),
('tkinter.filedialog', 'LoadFileDialog'): ('FileDialog', 'LoadFileDialog'),
('tkinter.filedialog', 'SaveFileDialog'): ('FileDialog', 'SaveFileDialog'),
('tkinter.simpledialog', 'SimpleDialog'): ('SimpleDialog', 'SimpleDialog'),
('xmlrpc.server', 'ServerHTMLDoc'): ('DocXMLRPCServer', 'ServerHTMLDoc'),
('xmlrpc.server', 'XMLRPCDocGenerator'):
('DocXMLRPCServer', 'XMLRPCDocGenerator'),
('xmlrpc.server', 'DocXMLRPCRequestHandler'):
('DocXMLRPCServer', 'DocXMLRPCRequestHandler'),
('xmlrpc.server', 'DocXMLRPCServer'):
('DocXMLRPCServer', 'DocXMLRPCServer'),
('xmlrpc.server', 'DocCGIXMLRPCRequestHandler'):
('DocXMLRPCServer', 'DocCGIXMLRPCRequestHandler'),
('http.server', 'SimpleHTTPRequestHandler'):
('SimpleHTTPServer', 'SimpleHTTPRequestHandler'),
('http.server', 'CGIHTTPRequestHandler'):
('CGIHTTPServer', 'CGIHTTPRequestHandler'),
('_socket', 'socket'): ('socket', '_socketobject'),
})
PYTHON3_OSERROR_EXCEPTIONS = (
'BrokenPipeError',
'ChildProcessError',
'ConnectionAbortedError',
'ConnectionError',
'ConnectionRefusedError',
'ConnectionResetError',
'FileExistsError',
'FileNotFoundError',
'InterruptedError',
'IsADirectoryError',
'NotADirectoryError',
'PermissionError',
'ProcessLookupError',
'TimeoutError',
)
for excname in PYTHON3_OSERROR_EXCEPTIONS:
REVERSE_NAME_MAPPING[('builtins', excname)] = ('exceptions', 'OSError')
PYTHON3_IMPORTERROR_EXCEPTIONS = (
'ModuleNotFoundError',
)
for excname in PYTHON3_IMPORTERROR_EXCEPTIONS:
REVERSE_NAME_MAPPING[('builtins', excname)] = ('exceptions', 'ImportError')
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