def _encode(self, ctxt, input_buf, output_buf, params, count):
try:
input_obj = databuffer.DataBuffer(handle = core.BNDuplicateDataBuffer(input_buf))
param_map = {}
for i in xrange(0, count):
data = databuffer.DataBuffer(handle = core.BNDuplicateDataBuffer(params[i].value))
param_map[params[i].name] = str(data)
result = self.perform_encode(str(input_obj), param_map)
if result is None:
return False
result = str(result)
core.BNSetDataBufferContents(output_buf, result, len(result))
return True
except:
log.log_error(traceback.format_exc())
return False
def __setitem__(self, i, value):
if isinstance(i, slice):
if i.step is not None:
raise IndexError("step not supported on assignment")
i = i.indices(len(self))
start = i[0]
stop = i[1]
if stop < start:
stop = start
if len(value) != (stop - start):
data = str(self)
data = data[0:start] + value + data[stop:]
core.BNSetDataBufferContents(self.handle, data, len(data))
else:
value = str(value)
buf = ctypes.create_string_buffer(value)
ctypes.memmove(
core.BNGetDataBufferContentsAt(self.handle, start), buf,
len(value))
elif i < 0:
if i >= -len(self):
if len(value) != 1:
raise ValueError("expected single byte for assignment")
value = str(value)
buf = ctypes.create_string_buffer(value)
ctypes.memmove(
core.BNGetDataBufferContentsAt(self.handle,
int(len(self) + i)), buf, 1)
else:
raise IndexError("index out of range")
elif i < len(self):
if len(value) != 1:
raise ValueError("expected single byte for assignment")
value = str(value)
buf = ctypes.create_string_buffer(value)
ctypes.memmove(core.BNGetDataBufferContentsAt(self.handle, int(i)),
buf, 1)
else:
raise IndexError("index out of range")