move commandparsing to utils.py, add error checking to default.cmd['load']

mods/default.py

@@ -1,9 +1,13 @@
 import utils
 
 def cmd(line, srv):
-    splitted = line.params[1].split(' ')
-    command = splitted[0][1:]
+    command, params = utils.cmdparse(line)
     if command == "load":
-        srv.load_mod(splitted[1])
+        try:
+            srv.load_mod(params[0])
+        except ModuleNotFoundError:
             utils.message(srv, line.params[0],
-            "loaded: " + splitted[1])
+                "failed to load `" + params[0] + "'")
+        else:
+            utils.message(srv, line.params[0],
+                "loaded: `" + params[0] + "'")

mods/utils.py

@@ -18,3 +18,12 @@ from irctokens import build
 
 def message(srv, channel, msg):
     srv.send(build("PRIVMSG", [channel, msg]))
+
+def cmdparse(line):
+    splitted = line.params[1].split(' ')
+    try: command = splitted[0][1:]
+    except IndexError: command = None
+    try: params = splitted[1:]
+    except IndexError: params = None
+    return (command, params)
+