def py_dc_callback(ctx, evt, data1, data2):
"""The global event handler.
CFFI only allows us to set one global event handler, so this one
looks up the correct event handler for the given context.
"""
try:
callback = _DC_CALLBACK_MAP.get(ctx, lambda *a: 0)
except AttributeError:
# we are in a deep in GC-free/interpreter shutdown land
# nothing much better to do here than:
return 0
# the following code relates to the deltachat/_build.py's helper
# function which provides us signature info of an event call
evt_name = get_dc_event_name(evt)
event_sig_types = capi.lib.dc_get_event_signature_types(evt)
if data1 and event_sig_types & 1:
data1 = ffi.string(ffi.cast('char*', data1)).decode("utf8")
if data2 and event_sig_types & 2:
data2 = ffi.string(ffi.cast('char*', data2)).decode("utf8")
try:
if isinstance(data2, bytes):
data2 = data2.decode("utf8")
except UnicodeDecodeError:
# XXX ignoring the decode error is not quite correct but for now
# i don't want to hunt down encoding problems in the c lib
pass
try:
ret = callback(ctx, evt_name, data1, data2)
if ret is None:
ret = 0
assert isinstance(ret, int), repr(ret)
if event_sig_types & 4:
return ffi.cast('uintptr_t', ret)
elif event_sig_types & 8:
return ffi.cast('int', ret)
except: # noqa
raise
ret = 0
return ret
def py_dc_callback(ctx, evt, data1, data2):
"""The global event handler.
CFFI only allows us to set one global event handler, so this one
looks up the correct event handler for the given context.
"""
try:
callback = _DC_CALLBACK_MAP.get(ctx, lambda *a: 0)
except AttributeError:
# we are in a deep in GC-free/interpreter shutdown land
# nothing much better to do here than:
return 0
# the following code relates to the deltachat/_build.py's helper
# function which provides us signature info of an event call
evt_name = get_dc_event_name(evt)
event_sig_types = capi.lib.dc_get_event_signature_types(evt)
if data1 and event_sig_types & 1:
data1 = ffi.string(ffi.cast('char*', data1)).decode("utf8")
if data2 and event_sig_types & 2:
try:
data2 = ffi.string(ffi.cast('char*', data2)).decode("utf8")
except UnicodeDecodeError:
# XXX ignoring this error is not quite correct but for now
# i don't want to hunt down encoding problems in the c lib
data2 = ffi.string(ffi.cast('char*', data2))
try:
ret = callback(ctx, evt_name, data1, data2)
if event_sig_types & 4:
return ffi.cast('uintptr_t', ret)
elif event_sig_types & 8:
return ffi.cast('int', ret)
except: # noqa
raise
ret = 0
return ret