BLESession: handle device UUIDs as list

In the debug for the issue #30, it turned out that the bluepy API
ScanEntry.getValueText() for adtypes may return multiple UUIDs
concatenated with comma. Current code assumes that the API returns
single UUID, then multiple UUIDs cause the "Error: Non-hexadecimal digit
found" for the comma.

To fix it, replace ScanEntry.getValueText() call with getValue(), and
handle the result as a list of UUIDs. Also rename the helper function
_get_dev_uuid() to _get_dev_uuids() accordingly.

Signed-off-by: Shin'ichiro Kawasaki <[email protected]>

pyscrlink/scratch_link.py

@@ -466,15 +466,14 @@ def close(self):
     def __del__(self):
         self.close()
 
-    def _get_dev_uuid(self, dev):
+    def _get_dev_uuids(self, dev):
         for adtype in self.SERVICE_CLASS_UUID_ADTYPES:
-            service_class_uuid = dev.getValueText(adtype)
-            if service_class_uuid:
-                a = self.SERVICE_CLASS_UUID_ADTYPES[adtype]
-                logger.debug(f"service class uuid for {a}/{adtype}: {service_class_uuid}")
-                uuid = UUID(service_class_uuid)
-                logger.debug(f"uuid: {uuid}")
-                return uuid
+            service_class_uuids = dev.getValue(adtype)
+            if service_class_uuids:
+                for u in service_class_uuids:
+                    a = self.SERVICE_CLASS_UUID_ADTYPES[adtype]
+                    logger.debug(f"service class uuid for {a}/{adtype}: {u}")
+                return service_class_uuids
         return None
 
     def matches(self, dev, filters):
@@ -488,14 +487,15 @@ def matches(self, dev, filters):
                     logger.debug(f"service to check: {s}")
                     given_uuid = s
                     logger.debug(f"given UUID: {given_uuid} hash={UUID(given_uuid).__hash__()}")
-                    dev_uuid = self._get_dev_uuid(dev)
-                    if not dev_uuid:
+                    dev_uuids = self._get_dev_uuids(dev)
+                    if not dev_uuids:
                         continue
-                    logger.debug(f"dev UUID: {dev_uuid} hash={dev_uuid.__hash__()}")
-                    logger.debug(given_uuid == dev_uuid)
-                    if given_uuid == dev_uuid:
-                        logger.debug("match...")
-                        return True
+                    for u in dev_uuids:
+                        logger.debug(f"dev UUID: {u} hash={u.__hash__()}")
+                        logger.debug(given_uuid == u)
+                        if given_uuid == u:
+                            logger.debug("match...")
+                            return True
             if 'namePrefix' in f:
                 # 0x08: Shortened Local Name
                 deviceName = dev.getValueText(0x08)