X-Git-Url: http://average.org/gitweb/?a=blobdiff_plain;f=loctrkd%2Fzx303proto.py;h=454214eb0c22d7f9e8713e7b367059f279886bb7;hb=16bea55924c0ab9d035f3e99573fc49c370de231;hp=efb02d249f6c118185ce2a66b23675c9acf85efd;hpb=dbdf9d63af31770ad57302e16b17a2fdc526773f;p=loctrkd.git

diff --git a/loctrkd/zx303proto.py b/loctrkd/zx303proto.py
index efb02d2..454214e 100755
--- a/loctrkd/zx303proto.py
+++ b/loctrkd/zx303proto.py
@@ -31,13 +31,17 @@ from typing import (
     Union,
 )
 
+from .protomodule import ProtoClass
+
 __all__ = (
     "Stream",
     "class_by_prefix",
+    "enframe",
+    "exposed_protos",
     "inline_response",
+    "proto_handled",
     "parse_message",
     "probe_buffer",
-    "proto_by_name",
     "proto_name",
     "DecodeError",
     "Respond",
@@ -81,7 +85,7 @@ __all__ = (
     "UNKNOWN_B3",
 )
 
-PROTO_PREFIX = "ZX"
+PROTO_PREFIX = "ZX:"
 
 ### Deframer ###
 
@@ -92,10 +96,6 @@ class Stream:
     def __init__(self) -> None:
         self.buffer = b""
 
-    @staticmethod
-    def enframe(buffer: bytes) -> bytes:
-        return b"xx" + buffer + b"\r\n"
-
     def recv(self, segment: bytes) -> List[Union[bytes, str]]:
         """
         Process next segment of the stream. Return successfully deframed
@@ -150,6 +150,10 @@ class Stream:
         return ret
 
 
+def enframe(buffer: bytes, imei: Optional[str] = None) -> bytes:
+    return b"xx" + buffer + b"\r\n"
+
+
 ### Parser/Constructor ###
 
 
@@ -245,63 +249,13 @@ def l3int(x: Union[str, List[int]]) -> List[int]:
     return lx
 
 
-class MetaPkt(type):
-    """
-    For each class corresponding to a message, automatically create
-    two nested classes `In` and `Out` that also inherit from their
-    "nest". Class attribute `IN_KWARGS` defined in the "nest" is
-    copied to the `In` nested class under the name `KWARGS`, and
-    likewise, `OUT_KWARGS` of the nest class is copied as `KWARGS`
-    to the nested class `Out`. In addition, method `encode` is
-    defined in both classes equal to `in_encode()` and `out_encode()`
-    respectively.
-    """
-
-    if TYPE_CHECKING:
-
-        def __getattr__(self, name: str) -> Any:
-            pass
-
-        def __setattr__(self, name: str, value: Any) -> None:
-            pass
-
-    def __new__(
-        cls: Type["MetaPkt"],
-        name: str,
-        bases: Tuple[type, ...],
-        attrs: Dict[str, Any],
-    ) -> "MetaPkt":
-        newcls = super().__new__(cls, name, bases, attrs)
-        newcls.In = super().__new__(
-            cls,
-            name + ".In",
-            (newcls,) + bases,
-            {
-                "KWARGS": newcls.IN_KWARGS,
-                "decode": newcls.in_decode,
-                "encode": newcls.in_encode,
-            },
-        )
-        newcls.Out = super().__new__(
-            cls,
-            name + ".Out",
-            (newcls,) + bases,
-            {
-                "KWARGS": newcls.OUT_KWARGS,
-                "decode": newcls.out_decode,
-                "encode": newcls.out_encode,
-            },
-        )
-        return newcls
-
-
 class Respond(Enum):
     NON = 0  # Incoming, no response needed
     INL = 1  # Birirectional, use `inline_response()`
     EXT = 2  # Birirectional, use external responder
 
 
-class GPS303Pkt(metaclass=MetaPkt):
+class GPS303Pkt(ProtoClass):
     RESPOND = Respond.NON  # Do not send anything back by default
     PROTO: int
     IN_KWARGS: Tuple[Tuple[str, Callable[[Any], Any], Any], ...] = ()
@@ -863,32 +817,30 @@ if True:  # just to indent the code, sorry!
 
 def class_by_prefix(
     prefix: str,
-) -> Union[Type[GPS303Pkt], List[Tuple[str, int]]]:
+) -> Union[Type[GPS303Pkt], List[str]]:
+    if prefix.startswith(PROTO_PREFIX):
+        pname = prefix[len(PROTO_PREFIX) :]
+    else:
+        raise KeyError(pname)
     lst = [
         (name, proto)
         for name, proto in PROTOS.items()
         if name.upper().startswith(prefix.upper())
     ]
     if len(lst) != 1:
-        return lst
+        return [name for name, _ in lst]
     _, proto = lst[0]
     return CLASSES[proto]
 
 
-def proto_name(obj: Union[MetaPkt, GPS303Pkt]) -> str:
-    return (
-        PROTO_PREFIX
-        + ":"
-        + (
-            obj.__class__.__name__
-            if isinstance(obj, GPS303Pkt)
-            else obj.__name__
-        )
-    ).ljust(16, "\0")[:16]
+def proto_handled(proto: str) -> bool:
+    return proto.startswith(PROTO_PREFIX)
 
 
-def proto_by_name(name: str) -> int:
-    return PROTOS.get(name, -1)
+def proto_name(obj: Union[Type[GPS303Pkt], GPS303Pkt]) -> str:
+    return PROTO_PREFIX + (
+        obj.__class__.__name__ if isinstance(obj, GPS303Pkt) else obj.__name__
+    )
 
 
 def proto_of_message(packet: bytes) -> str:
@@ -948,3 +900,11 @@ def parse_message(packet: bytes, is_incoming: bool = True) -> GPS303Pkt:
     retobj.PROTO = proto  # Override class attr with object attr
     retobj.cause = cause
     return retobj
+
+
+def exposed_protos() -> List[Tuple[str, bool]]:
+    return [
+        (proto_name(GPS_POSITIONING), True),
+        (proto_name(WIFI_POSITIONING), False),
+        (proto_name(STATUS), True),
+    ]