def AEM_unpack(self, desc, codecs):
try:
return self._unpack(desc, codecs)
except MacOS.Error, e:
number, message = e[0], e.args[1:] and e[1] or None
if number == -1700: # coercion error
return False, EventHandlerError(number,
message,
object=desc,
coercion=AEType(self.AEM_code))
else:
return False, EventHandlerError(number, message, object=desc)
def AEM_unpack(self, desc, codecs):
if desc.type == kAE.typeType and desc.data == self._cMissingValue:
return True, codecs.unpack(desc)
else:
return False, EventHandlerError(-1704,
"Not a 'missing value' constant.",
desc)
def _unpackAppleEvent(event, includeAttributes, requiredArgDefs,
optionalArgDefs, codecs):
desiredResultType = None
if includeAttributes:
kargs = {_attributesArgName: _unpackEventAttributes(event)}
else:
kargs = {}
params = dict([
event.AEGetNthDesc(i + 1, kae.typeWildCard)
for i in range(event.AECountItems())
])
for code, argName, datatypes in requiredArgDefs:
try:
argValue = params.pop(code)
except KeyError:
raise EventHandlerError(-1721,
"Required parameter %r is missing." % code)
else:
kargs[argName] = _unpackValue(argValue, datatypes, codecs)
for code, argValue in params.items():
try:
argName, datatypes = optionalArgDefs[code]
except KeyError: # (note: SIG says that any unrecognised parameters should be ignored)
if code == kae.keyAERequestedType: # event contains a 'desired result type' parameter but callback doesn't handle this explicitly, so have callback wrapper attempt to perform coercion automatically when packing result
desiredResultType = argValue
else:
kargs[argName] = _unpackValue(argValue, datatypes, codecs)
return kargs, desiredResultType
def AEM_unpack(self, desc, codecs):
if desc.type == kAE.typeNull:
return True, None
else:
return False, EventHandlerError(-1704,
"Not a typeNull descriptor.", desc)
def _unpack(self, desc, codecs):
desc = desc.AECoerceDesc(kAE.typeEnumerated)
if desc.data not in self._codes:
return False, EventHandlerError(-1704, "Bad enumerator.", desc,
AEType(kAE.typeEnumerated))
return True, codecs.unpack(desc)
