Refactor Engine.recv_line()

* Fix saving of engine id name and author.
* Check bestmove first before other engine replies.
* Remove unnecessary parsing of an initial word "warn". Engine or human sending messages should start with "info string [message]".
Example:
info string Warning position is illegal.

Tested to work on win7 OS and python v3.7.3.

ataxx/uai.py

@@ -21,42 +21,30 @@ def send_line(self, line):
     def recv_line(self, line):
         words = line.split(' ')
 
-        # FIXME:
-        if words[0] == "id" and words[1] == "name" and len(words) > 2:
-            self.name = words[3:]
-
-        if len(words) > 1 and words[0] == "warn":
-            print(line)
-
-        if len(words) == 1:
-            if words[0] == "uaiok":
-                with self.uaiok_received:
-                    self.uaiok_received.notify_all()
-            elif words[0] == "readyok":
-                with self.readyok_received:
-                    self.readyok_received.notify_all()
-
-        elif len(words) == 2:
-            if words[0] == "bestmove":
-                with self.bestmove_received:
-                    self.bestmove = words[1]
-                    self.bestmove_received.notify_all()
-
-        elif len(words) == 3:
-            if words[0] == "id" and words[1] == "name":
-                self.name = words[2]
-            elif words[0] == "id" and words[1] == "author":
-                self.author = words[2]
-
-        elif len(words) == 4:
-            if words[0] == "bestmove" and words[2] == "ponder":
-                with self.bestmove_received:
-                    self.bestmove = words[1]
-                    self.ponder = words[3]
-                    self.bestmove_received.notify_all()
-
-        else:
-            pass
+        if 'bestmove ' in line and 'ponder ' in line:
+            with self.bestmove_received:
+                self.bestmove = words[1]
+                self.ponder = words[3]
+                self.bestmove_received.notify_all()
+
+        elif 'bestmove ' in line:
+            with self.bestmove_received:
+                self.bestmove = words[1]
+                self.bestmove_received.notify_all()
+
+        elif 'readyok' in line:
+            with self.readyok_received:
+                self.readyok_received.notify_all()
+
+        elif 'id name ' in line:
+            self.name = ' '.join(words[2:])
+
+        elif 'id author ' in line:
+            self.author = ' '.join(words[2:])
+
+        elif 'uaiok' in line:
+            with self.uaiok_received:
+                self.uaiok_received.notify_all()
 
     def uai(self):
         with self.uaiok_received: