Implement IRCv3's draft/rename

Author: jesopo

modules/line_handler.py

@@ -11,7 +11,7 @@
 CAPABILITIES = {"multi-prefix", "chghost", "invite-notify", "account-tag",
     "account-notify", "extended-join", "away-notify", "userhost-in-names",
     "draft/message-tags-0.2", "server-time", "cap-notify",
-    "batch", "draft/labeled-response"}
+    "batch", "draft/labeled-response", "draft/rename"}
 
 class Module(ModuleManager.BaseModule):
     def _handle(self, server, line):
@@ -566,3 +566,15 @@ def kick(self, event):
         else:
             self.events.on("self.kick").call(channel=channel,
                 reason=reason, user=user, server=event["server"])
+
+    # a channel has been renamed
+    @utils.hook("raw.rename")
+    def rename(self, event):
+        old_name = event["args"][0]
+        new_name = event["args"][1]
+        channel = event["server"].get_channel(old_name)
+
+        event["server"].rename_channel(old_name, new_name)
+        self.events.on("received.rename").call(channel=channel,
+            old_name=old_name, new_name=new_name,
+            reason=event["arbitrary"] or events["args"][2]))

src/IRCServer.py

@@ -214,6 +214,11 @@ def remove_channel(self, channel: IRCChannel.Channel):
         for user in channel.users:
             user.part_channel(channel)
         del self.channels[channel.name]
+    def rename_channel(self, old_name, new_name):
+        channel = self.channels.pop(old_name.lower())
+        channel.name = new_name.lower()
+        self.channels[channel.name] = channel
+
     def parse_data(self, line: str):
         if not line:
             return