d90857a08c
* lang/python/helpers.c (pygpgme_stash_callback_exception): New
function.
(pygpgme_raise_callback_exception): Likewise.
(pyPassphraseCb): Stash python errors.
* lang/python/helpers.h (pygpgme_raise_callback_exception): New
prototype.
* lang/python/pyme/core.py ({Context,Data}.__init__): Move common
initialization to superclass.
(Context.set_progress_cb): Hand in 'self'.
* lang/python/pyme/util.py (GpgmeWrapper.__init__): New function.
(GpgmeWrapper.__getattr__): Raise stashed exceptions.
* lang/python/tests/Makefile.am (py_tests): Add new test.
* lang/python/tests/t-callbacks.py: New file.
Signed-off-by: Justus Winter <justus@gnupg.org>
108 lines
3.7 KiB
Python
108 lines
3.7 KiB
Python
# $Id$
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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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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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from . import pygpgme
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from .errors import errorcheck
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def process_constants(starttext, dict):
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"""Called by the constant libraries to load up the appropriate constants
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from the C library."""
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index = len(starttext)
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for identifier in dir(pygpgme):
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if not identifier.startswith(starttext):
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continue
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name = identifier[index:]
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dict[name] = getattr(pygpgme, identifier)
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class GpgmeWrapper(object):
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"""Base class all Pyme wrappers for GPGME functionality. Not to be
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instantiated directly."""
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def __init__(self, wrapped):
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self._callback_excinfo = None
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self.wrapped = wrapped
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def __repr__(self):
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return '<instance of %s.%s with GPG object at %s>' % \
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(__name__, self.__class__.__name__,
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self.wrapped)
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def __str__(self):
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return repr(self)
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def __hash__(self):
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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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return False
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else:
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return repr(self.wrapped) == repr(other.wrapped)
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def _getctype(self):
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"""Must be implemented by child classes.
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Must return the name of the c type."""
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raise NotImplementedError()
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def _getnameprepend(self):
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"""Must be implemented by child classes.
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Must return the prefix of all c functions mapped to methods of
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this class."""
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raise NotImplementedError()
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def _errorcheck(self, name):
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"""Must be implemented by child classes.
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This function must return a trueish value for all c functions
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returning gpgme_error_t."""
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raise NotImplementedError()
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def __getattr__(self, key):
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"""On-the-fly function generation."""
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if key[0] == '_' or self._getnameprepend() == None:
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return None
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name = self._getnameprepend() + key
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func = getattr(pygpgme, name)
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if self._errorcheck(name):
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def _funcwrap(slf, *args, **kwargs):
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result = func(slf.wrapped, *args, **kwargs)
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if slf._callback_excinfo:
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pygpgme.pygpgme_raise_callback_exception(slf)
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return errorcheck(result, "Invocation of " + name)
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else:
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def _funcwrap(slf, *args, **kwargs):
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result = func(slf.wrapped, *args, **kwargs)
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if slf._callback_excinfo:
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pygpgme.pygpgme_raise_callback_exception(slf)
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return result
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_funcwrap.__doc__ = getattr(func, "__doc__")
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# Monkey-patch the class.
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setattr(self.__class__, key, _funcwrap)
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# Bind the method to 'self'.
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def wrapper(*args, **kwargs):
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return _funcwrap(self, *args, **kwargs)
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_funcwrap.__doc__ = getattr(func, "__doc__")
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return wrapper
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