def write_entity(e, output_stream):
tmp_output_stream = OutputStream()
e.write(tmp_output_stream)
write_str(e.get_urn(), output_stream)
write_int32(e.get_id().get_value(), output_stream)
write_int32(len(tmp_output_stream.getvalue()), output_stream)
output_stream.write(tmp_output_stream.getvalue())
def write_msg(msg, output_stream):
tmp_output_stream = OutputStream()
msg.write(tmp_output_stream)
msg_data = tmp_output_stream.getvalue()
write_str(msg.urn, output_stream)
write_int32(len(msg_data), output_stream)
output_stream.write(msg_data)
def write_property(p, output_stream):
write_str(p.get_urn(), output_stream)
write_boolean(p.is_defined(), output_stream)
if p.is_defined():
tmp_output = OutputStream()
p.write(tmp_output)
write_int32(len(tmp_output.getvalue()), output_stream)
output_stream.write(tmp_output.getvalue())
def send_msg(self, msg):
tmp_output_stream = OutputStream()
write_msg(msg, tmp_output_stream)
write_int32(0, tmp_output_stream)
msg_data = tmp_output_stream.getvalue()
output_stream = OutputStream()
# first write the size of the message
write_int32(len(msg_data), output_stream)
output_stream.write(msg_data)
self.send_bytes(output_stream.getvalue())
def read_float32_from_byte_arr(byte_array):
value = float((ord(byte_array[0]) << 24) + (ord(byte_array[1]) << 18) +
(ord(byte_array[2]) << 8) + ord(byte_array[3]))
return value
def write_float32(value, output_stream):
output_stream.write(chr((value >> 24) & 0xFF))
output_stream.write(chr((value >> 16) & 0xFF))
output_stream.write(chr((value >> 8) & 0xFF))
output_stream.write(chr(value & 0xFF))
return
if __name__ == '__main__':
print("writing the value:549139337")
output_stream = OutputStream()
write_int32(549139337, output_stream)
four_bytes = output_stream.getvalue()
for my_ch in four_bytes:
print(ord(my_ch))
print("reading back")
input_stream = InputStream(four_bytes)
read_four_bytes = input_stream.read(4)
for read_ch in read_four_bytes:
print(ord(read_ch))
print("read value:" + str(read_int32_from_byte_arr(read_four_bytes)))