python bindings: core — PEP8 compliance
* Fixed most of the PEP8 errors in core.py * Those remaining may need more than little edits and are a bit strange (too clearly the result of a programmer who has spent far too much time dealing with Lisp so that for Python it looks ... strange).
This commit is contained in:
Ben McGinnes
parent
5a80e75500
commit
a5b24ae46c
@ -1,3 +1,19 @@
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# -*- coding: utf-8 -*-
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import re
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import os
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import warnings
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import weakref
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from . import gpgme
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from .errors import errorcheck, GPGMEError
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from . import constants
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from . import errors
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from . import util
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from __future__ import absolute_import, print_function, unicode_literals
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del absolute_import, print_function, unicode_literals
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# Copyright (C) 2016-2017 g10 Code GmbH
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# Copyright (C) 2004,2008 Igor Belyi <belyi@users.sourceforge.net>
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# Copyright (C) 2002 John Goerzen <jgoerzen@complete.org>
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@ -24,18 +40,6 @@ and the 'Data' class describing buffers of data.
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"""
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from __future__ import absolute_import, print_function, unicode_literals
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del absolute_import, print_function, unicode_literals
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import re
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import os
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import warnings
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import weakref
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from . import gpgme
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from .errors import errorcheck, GPGMEError
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from . import constants
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from . import errors
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from . import util
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class GpgmeWrapper(object):
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"""Base wrapper class
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@ -64,7 +68,7 @@ class GpgmeWrapper(object):
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return hash(repr(self.wrapped))
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def __eq__(self, other):
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if other == None:
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if other is None:
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return False
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else:
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return repr(self.wrapped) == repr(other.wrapped)
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@ -102,8 +106,10 @@ class GpgmeWrapper(object):
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"{}get_{}".format(self._cprefix, key))
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set_func = getattr(gpgme,
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"{}set_{}".format(self._cprefix, key))
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def get(slf):
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return bool(get_func(slf.wrapped))
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def set_(slf, value):
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set_func(slf.wrapped, bool(value))
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@ -116,9 +122,10 @@ class GpgmeWrapper(object):
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return get(self)
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_munge_docstring = re.compile(r'gpgme_([^(]*)\(([^,]*), (.*\) -> .*)')
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def __getattr__(self, key):
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"""On-the-fly generation of wrapper methods and properties"""
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if key[0] == '_' or self._cprefix == None:
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if key[0] == '_' or self._cprefix is None:
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return None
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if key in self._boolean_properties:
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@ -160,6 +167,7 @@ class GpgmeWrapper(object):
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else:
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super(GpgmeWrapper, self).__setattr__(key, value)
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class Context(GpgmeWrapper):
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"""Context for cryptographic operations
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@ -212,7 +220,7 @@ class Context(GpgmeWrapper):
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Helper function to retrieve the results of an operation, or
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None if SINK is given.
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"""
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if sink or data == None:
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if sink or data is None:
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return None
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data.seek(0, os.SEEK_SET)
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return data.read()
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@ -267,10 +275,11 @@ class Context(GpgmeWrapper):
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flags |= expect_sign * constants.ENCRYPT_EXPECT_SIGN
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flags |= (not compress) * constants.ENCRYPT_NO_COMPRESS
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if passphrase != None:
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if passphrase is not None:
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old_pinentry_mode = self.pinentry_mode
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old_passphrase_cb = getattr(self, '_passphrase_cb', None)
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self.pinentry_mode = constants.PINENTRY_MODE_LOOPBACK
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def passphrase_cb(hint, desc, prev_bad, hook=None):
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return passphrase
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self.set_passphrase_cb(passphrase_cb)
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@ -301,7 +310,7 @@ class Context(GpgmeWrapper):
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e.results = results
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raise e
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finally:
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if passphrase != None:
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if passphrase is not None:
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self.pinentry_mode = old_pinentry_mode
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if old_passphrase_cb:
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self.set_passphrase_cb(*old_passphrase_cb[1:])
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@ -344,10 +353,11 @@ class Context(GpgmeWrapper):
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"""
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plaintext = sink if sink else Data()
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if passphrase != None:
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if passphrase is not None:
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old_pinentry_mode = self.pinentry_mode
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old_passphrase_cb = getattr(self, '_passphrase_cb', None)
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self.pinentry_mode = constants.PINENTRY_MODE_LOOPBACK
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def passphrase_cb(hint, desc, prev_bad, hook=None):
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return passphrase
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self.set_passphrase_cb(passphrase_cb)
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@ -365,7 +375,7 @@ class Context(GpgmeWrapper):
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result, verify_result)
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raise e
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finally:
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if passphrase != None:
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if passphrase is not None:
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self.pinentry_mode = old_pinentry_mode
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if old_passphrase_cb:
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self.set_passphrase_cb(*old_passphrase_cb[1:])
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@ -382,7 +392,7 @@ class Context(GpgmeWrapper):
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for s in verify_result.signatures):
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raise errors.BadSignatures(verify_result, results=results)
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if verify and verify != True:
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if not verify: # was: if verify and verify != True:
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missing = list()
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for key in verify:
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ok = False
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@ -515,14 +525,14 @@ class Context(GpgmeWrapper):
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Imports the given data into the Context.
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Returns:
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-- an object describing the results of imported or updated
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-- an object describing the results of imported or updated
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keys
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Raises:
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TypeError -- Very rarely.
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GPGMEError -- as signaled by the underlying library:
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Import status errors, when they occur, will usually
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Import status errors, when they occur, will usually
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be of NODATA. NO_PUBKEY indicates something
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managed to run the function without any
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arguments, while an argument of None triggers
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@ -592,8 +602,8 @@ class Context(GpgmeWrapper):
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self.op_keylist_end()
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def create_key(self, userid, algorithm=None, expires_in=0, expires=True,
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sign=False, encrypt=False, certify=False, authenticate=False,
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passphrase=None, force=False):
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sign=False, encrypt=False, certify=False,
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authenticate=False, passphrase=None, force=False):
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"""Create a primary key
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Create a primary key for the user id USERID.
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@ -630,9 +640,10 @@ class Context(GpgmeWrapper):
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encrypt -- request the encryption capability (see above)
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certify -- request the certification capability (see above)
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authenticate -- request the authentication capability (see above)
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passphrase -- protect the key with a passphrase (default: no passphrase)
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force -- force key creation even if a key with the same userid exists
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(default: False)
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passphrase -- protect the key with a passphrase (default: no
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passphrase)
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force -- force key creation even if a key with the same userid
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exists (default: False)
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Returns:
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-- an object describing the result of the key creation
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@ -645,20 +656,21 @@ class Context(GpgmeWrapper):
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old_pinentry_mode = self.pinentry_mode
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old_passphrase_cb = getattr(self, '_passphrase_cb', None)
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self.pinentry_mode = constants.PINENTRY_MODE_LOOPBACK
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def passphrase_cb(hint, desc, prev_bad, hook=None):
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return passphrase
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self.set_passphrase_cb(passphrase_cb)
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try:
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self.op_createkey(userid, algorithm,
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0, # reserved
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0, # reserved
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expires_in,
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None, # extrakey
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None, # extrakey
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((constants.create.SIGN if sign else 0)
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| (constants.create.ENCR if encrypt else 0)
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| (constants.create.CERT if certify else 0)
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| (constants.create.AUTH if authenticate else 0)
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| (constants.create.NOPASSWD if passphrase == None else 0)
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| (constants.create.NOPASSWD if passphrase is None else 0)
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| (0 if expires else constants.create.NOEXPIRE)
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| (constants.create.FORCE if force else 0)))
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finally:
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@ -670,7 +682,8 @@ class Context(GpgmeWrapper):
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return self.op_genkey_result()
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def create_subkey(self, key, algorithm=None, expires_in=0, expires=True,
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sign=False, encrypt=False, authenticate=False, passphrase=None):
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sign=False, encrypt=False, authenticate=False,
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passphrase=None):
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"""Create a subkey
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Create a subkey for the given KEY. As subkeys are a concept
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@ -706,7 +719,8 @@ class Context(GpgmeWrapper):
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sign -- request the signing capability (see above)
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encrypt -- request the encryption capability (see above)
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authenticate -- request the authentication capability (see above)
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passphrase -- protect the subkey with a passphrase (default: no passphrase)
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passphrase -- protect the subkey with a passphrase (default: no
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passphrase)
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Returns:
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-- an object describing the result of the subkey creation
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@ -719,19 +733,20 @@ class Context(GpgmeWrapper):
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old_pinentry_mode = self.pinentry_mode
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old_passphrase_cb = getattr(self, '_passphrase_cb', None)
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self.pinentry_mode = constants.PINENTRY_MODE_LOOPBACK
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def passphrase_cb(hint, desc, prev_bad, hook=None):
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return passphrase
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self.set_passphrase_cb(passphrase_cb)
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try:
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self.op_createsubkey(key, algorithm,
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0, # reserved
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0, # reserved
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expires_in,
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((constants.create.SIGN if sign else 0)
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| (constants.create.ENCR if encrypt else 0)
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| (constants.create.AUTH if authenticate else 0)
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| (constants.create.NOPASSWD
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if passphrase == None else 0)
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if passphrase is None else 0)
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| (0 if expires else constants.create.NOEXPIRE)))
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finally:
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if util.is_a_string(passphrase):
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@ -792,8 +807,8 @@ class Context(GpgmeWrapper):
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"""
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flags = 0
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if uids == None or util.is_a_string(uids):
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pass#through unchanged
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if uids is None or util.is_a_string(uids):
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pass # through unchanged
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else:
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flags |= constants.keysign.LFSEP
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uids = "\n".join(uids)
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@ -883,10 +898,10 @@ class Context(GpgmeWrapper):
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GPGMEError -- as signaled by the underlying library
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"""
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if key == None:
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if key is None:
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raise ValueError("First argument cannot be None")
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if sink == None:
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if sink is None:
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sink = Data()
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if fnc_value:
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@ -904,6 +919,7 @@ class Context(GpgmeWrapper):
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def signers(self):
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"""Keys used for signing"""
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return [self.signers_enum(i) for i in range(self.signers_count())]
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@signers.setter
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def signers(self, signers):
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old = self.signers
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@ -919,6 +935,7 @@ class Context(GpgmeWrapper):
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def pinentry_mode(self):
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"""Pinentry mode"""
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return self.get_pinentry_mode()
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@pinentry_mode.setter
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def pinentry_mode(self, value):
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self.set_pinentry_mode(value)
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@ -927,6 +944,7 @@ class Context(GpgmeWrapper):
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def protocol(self):
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"""Protocol to use"""
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return self.get_protocol()
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@protocol.setter
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def protocol(self, value):
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errorcheck(gpgme.gpgme_engine_check_version(value))
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@ -936,6 +954,7 @@ class Context(GpgmeWrapper):
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def home_dir(self):
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"""Engine's home directory"""
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return self.engine_info.home_dir
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@home_dir.setter
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def home_dir(self, value):
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self.set_engine_info(self.protocol, home_dir=value)
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@ -948,25 +967,15 @@ class Context(GpgmeWrapper):
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# The list of functions is created using:
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#
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# $ grep '^gpgme_error_t ' obj/lang/python/python3.5-gpg/gpgme.h \
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# | grep -v _op_ | awk "/\(gpgme_ctx/ { printf (\"'%s',\\n\", \$2) } "
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return ((name.startswith('gpgme_op_')
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and not name.endswith('_result'))
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or name in {
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'gpgme_new',
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'gpgme_set_ctx_flag',
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'gpgme_set_protocol',
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'gpgme_set_sub_protocol',
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'gpgme_set_keylist_mode',
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'gpgme_set_pinentry_mode',
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'gpgme_set_locale',
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'gpgme_ctx_set_engine_info',
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'gpgme_signers_add',
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'gpgme_sig_notation_add',
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'gpgme_set_sender',
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'gpgme_cancel',
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'gpgme_cancel_async',
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'gpgme_get_key',
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})
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# | grep -v _op_ | awk "/\(gpgme_ctx/ { printf (\"'%s',\\n\", \$2) } "
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return ((name.startswith('gpgme_op_') and not
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name.endswith('_result')) or name in {'gpgme_new',
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'gpgme_set_ctx_flag', 'gpgme_set_protocol',
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'gpgme_set_sub_protocol', 'gpgme_set_keylist_mode',
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'gpgme_set_pinentry_mode', 'gpgme_set_locale',
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'gpgme_ctx_set_engine_info', 'gpgme_signers_add',
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'gpgme_sig_notation_add', 'gpgme_set_sender', 'gpgme_cancel',
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'gpgme_cancel_async', 'gpgme_get_key'})
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_boolean_properties = {'armor', 'textmode', 'offline'}
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@ -985,6 +994,7 @@ class Context(GpgmeWrapper):
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# Implement the context manager protocol.
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def __enter__(self):
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return self
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def __exit__(self, type, value, tb):
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self.__del__()
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@ -1079,10 +1089,10 @@ class Context(GpgmeWrapper):
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Please see the GPGME manual for more information.
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"""
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if func == None:
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if func is None:
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hookdata = None
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else:
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if hook == None:
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if hook is None:
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hookdata = (weakref.ref(self), func)
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else:
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hookdata = (weakref.ref(self), func, hook)
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@ -1104,10 +1114,10 @@ class Context(GpgmeWrapper):
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Please see the GPGME manual for more information.
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"""
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if func == None:
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if func is None:
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hookdata = None
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else:
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if hook == None:
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if hook is None:
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hookdata = (weakref.ref(self), func)
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else:
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hookdata = (weakref.ref(self), func, hook)
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@ -1128,10 +1138,10 @@ class Context(GpgmeWrapper):
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Please see the GPGME manual for more information.
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"""
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if func == None:
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if func is None:
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hookdata = None
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else:
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if hook == None:
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if hook is None:
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hookdata = (weakref.ref(self), func)
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else:
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hookdata = (weakref.ref(self), func, hook)
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@ -1229,7 +1239,8 @@ class Data(GpgmeWrapper):
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# This list is compiled using
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#
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# $ grep -v '^gpgme_error_t ' obj/lang/python/python3.5-gpg/gpgme.h \
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# | awk "/\(gpgme_data_t/ { printf (\"'%s',\\n\", \$2) } " | sed "s/'\\*/'/"
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# | awk "/\(gpgme_data_t/ { printf (\"'%s',\\n\", \$2) } " \
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# | sed "s/'\\*/'/"
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return name not in {
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'gpgme_data_read',
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'gpgme_data_write',
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@ -1286,13 +1297,13 @@ class Data(GpgmeWrapper):
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super(Data, self).__init__(None)
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self.data_cbs = None
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if cbs != None:
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if cbs is not None:
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self.new_from_cbs(*cbs)
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elif string != None:
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elif string is not None:
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self.new_from_mem(string, copy)
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elif file != None and offset != None and length != None:
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elif file is not None and offset is not None and length is not None:
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self.new_from_filepart(file, offset, length)
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elif file != None:
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elif file is not None:
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if util.is_a_string(file):
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self.new_from_file(file, copy)
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else:
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@ -1305,7 +1316,7 @@ class Data(GpgmeWrapper):
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# At interpreter shutdown, gpgme is set to NONE.
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return
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if self.wrapped != None and gpgme.gpgme_data_release:
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if self.wrapped is not None and gpgme.gpgme_data_release:
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gpgme.gpgme_data_release(self.wrapped)
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if self._callback_excinfo:
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gpgme.gpg_raise_callback_exception(self)
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@ -1315,6 +1326,7 @@ class Data(GpgmeWrapper):
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# Implement the context manager protocol.
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def __enter__(self):
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return self
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def __exit__(self, type, value, tb):
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self.__del__()
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@ -1329,7 +1341,8 @@ class Data(GpgmeWrapper):
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def new_from_mem(self, string, copy=True):
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tmp = gpgme.new_gpgme_data_t_p()
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errorcheck(gpgme.gpgme_data_new_from_mem(tmp,string,len(string),copy))
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errorcheck(gpgme.gpgme_data_new_from_mem(tmp, string, len(string),
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copy))
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self.wrapped = gpgme.gpgme_data_t_p_value(tmp)
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gpgme.delete_gpgme_data_t_p(tmp)
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@ -1347,7 +1360,7 @@ class Data(GpgmeWrapper):
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|
||||
def new_from_cbs(self, read_cb, write_cb, seek_cb, release_cb, hook=None):
|
||||
tmp = gpgme.new_gpgme_data_t_p()
|
||||
if hook != None:
|
||||
if hook is not None:
|
||||
hookdata = (weakref.ref(self),
|
||||
read_cb, write_cb, seek_cb, release_cb, hook)
|
||||
else:
|
||||
@ -1374,9 +1387,9 @@ class Data(GpgmeWrapper):
|
||||
filename = file
|
||||
else:
|
||||
fp = gpgme.fdopen(file.fileno(), file.mode)
|
||||
if fp == None:
|
||||
raise ValueError("Failed to open file from %s arg %s" % \
|
||||
(str(type(file)), str(file)))
|
||||
if fp is None:
|
||||
raise ValueError("Failed to open file from %s arg %s" %
|
||||
(str(type(file)), str(file)))
|
||||
|
||||
errorcheck(gpgme.gpgme_data_new_from_filepart(tmp, filename, fp,
|
||||
offset, length))
|
||||
@ -1412,7 +1425,7 @@ class Data(GpgmeWrapper):
|
||||
raise GPGMEError.fromSyserror()
|
||||
return written
|
||||
|
||||
def read(self, size = -1):
|
||||
def read(self, size=-1):
|
||||
"""Read at most size bytes, returned as bytes.
|
||||
|
||||
If the size argument is negative or omitted, read until EOF is reached.
|
||||
@ -1447,6 +1460,7 @@ class Data(GpgmeWrapper):
|
||||
chunks.append(result)
|
||||
return b''.join(chunks)
|
||||
|
||||
|
||||
def pubkey_algo_string(subkey):
|
||||
"""Return short algorithm string
|
||||
|
||||
@ -1459,6 +1473,7 @@ def pubkey_algo_string(subkey):
|
||||
"""
|
||||
return gpgme.gpgme_pubkey_algo_string(subkey)
|
||||
|
||||
|
||||
def pubkey_algo_name(algo):
|
||||
"""Return name of public key algorithm
|
||||
|
||||
@ -1471,6 +1486,7 @@ def pubkey_algo_name(algo):
|
||||
"""
|
||||
return gpgme.gpgme_pubkey_algo_name(algo)
|
||||
|
||||
|
||||
def hash_algo_name(algo):
|
||||
"""Return name of hash algorithm
|
||||
|
||||
@ -1483,6 +1499,7 @@ def hash_algo_name(algo):
|
||||
"""
|
||||
return gpgme.gpgme_hash_algo_name(algo)
|
||||
|
||||
|
||||
def get_protocol_name(proto):
|
||||
"""Get protocol description
|
||||
|
||||
@ -1494,6 +1511,7 @@ def get_protocol_name(proto):
|
||||
"""
|
||||
return gpgme.gpgme_get_protocol_name(proto)
|
||||
|
||||
|
||||
def addrspec_from_uid(uid):
|
||||
"""Return the address spec
|
||||
|
||||
@ -1505,6 +1523,7 @@ def addrspec_from_uid(uid):
|
||||
"""
|
||||
return gpgme.gpgme_addrspec_from_uid(uid)
|
||||
|
||||
|
||||
def check_version(version=None):
|
||||
return gpgme.gpgme_check_version(version)
|
||||
|
||||
@ -1514,13 +1533,15 @@ def check_version(version=None):
|
||||
# it unless she really wants to check for a certain version.
|
||||
check_version()
|
||||
|
||||
def engine_check_version (proto):
|
||||
|
||||
def engine_check_version(proto):
|
||||
try:
|
||||
errorcheck(gpgme.gpgme_engine_check_version(proto))
|
||||
return True
|
||||
except errors.GPGMEError:
|
||||
return False
|
||||
|
||||
|
||||
def get_engine_info():
|
||||
ptr = gpgme.new_gpgme_engine_info_t_p()
|
||||
try:
|
||||
@ -1531,6 +1552,7 @@ def get_engine_info():
|
||||
gpgme.delete_gpgme_engine_info_t_p(ptr)
|
||||
return info
|
||||
|
||||
|
||||
def set_engine_info(proto, file_name, home_dir=None):
|
||||
"""Changes the default configuration of the crypto engine implementing
|
||||
the protocol 'proto'. 'file_name' is the file name of
|
||||
@ -1539,10 +1561,12 @@ def set_engine_info(proto, file_name, home_dir=None):
|
||||
used if omitted)."""
|
||||
errorcheck(gpgme.gpgme_set_engine_info(proto, file_name, home_dir))
|
||||
|
||||
|
||||
def set_locale(category, value):
|
||||
"""Sets the default locale used by contexts"""
|
||||
errorcheck(gpgme.gpgme_set_locale(None, category, value))
|
||||
|
||||
|
||||
def wait(hang):
|
||||
"""Wait for asynchronous call on any Context to finish.
|
||||
Wait forever if hang is True.
|
||||
@ -1556,7 +1580,7 @@ def wait(hang):
|
||||
context = gpgme.gpgme_wait(None, ptr, hang)
|
||||
status = gpgme.gpgme_error_t_p_value(ptr)
|
||||
gpgme.delete_gpgme_error_t_p(ptr)
|
||||
if context == None:
|
||||
if context is None:
|
||||
errorcheck(status)
|
||||
else:
|
||||
context = Context(context)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user