From b3f8b0c97df7c79175fbf2c2055fa55e2ec6942e Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Fri, 22 Jan 2021 11:34:04 +0100
Subject: [PATCH] Add support for RPL_ISUPPORT

---
 components/app.js |  9 +++++++++
 lib/irc.js        | 19 +++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/components/app.js b/components/app.js
index 26eba05..fbeaa97 100644
--- a/components/app.js
+++ b/components/app.js
@@ -450,6 +450,7 @@ export default class App extends Component {
 			networks.set(netID, {
 				id: netID,
 				status: Status.CONNECTING,
+				isupport: new Map(),
 			});
 			return { networks };
 		});
@@ -548,6 +549,14 @@ export default class App extends Component {
 			};
 			this.setBufferState({ network: netID, name: SERVER_BUFFER}, { serverInfo });
 			break;
+		case irc.RPL_ISUPPORT:
+			var tokens = msg.params.slice(1, -1);
+			this.setNetworkState(netID, (network) => {
+				var isupport = new Map(network.isupport);
+				irc.parseISUPPORT(tokens, isupport);
+				return { isupport };
+			});
+			break;
 		case irc.RPL_NOTOPIC:
 			var channel = msg.params[1];
 
diff --git a/lib/irc.js b/lib/irc.js
index 361b4ad..8e648d2 100644
--- a/lib/irc.js
+++ b/lib/irc.js
@@ -3,6 +3,7 @@ export const RPL_WELCOME = "001";
 export const RPL_YOURHOST = "002";
 export const RPL_CREATED = "003";
 export const RPL_MYINFO = "004";
+export const RPL_ISUPPORT = "005";
 export const RPL_ENDOFWHO = "315";
 export const RPL_NOTOPIC = "331";
 export const RPL_TOPIC = "332";
@@ -313,3 +314,21 @@ export function parseCTCP(msg) {
 	ctcp.command = ctcp.command.toUpperCase();
 	return ctcp;
 }
+
+export function parseISUPPORT(tokens, params) {
+	tokens.forEach((tok) => {
+		if (tok.startsWith("-")) {
+			var k = tok.slice(1);
+			params.delete(k.toUpperCase());
+			return;
+		}
+
+		var i = tok.indexOf("=");
+		var k = tok, v = "";
+		if (i >= 0) {
+			k = tok.slice(0, i);
+			v = tok.slice(i + 1);
+		}
+		params.set(k.toUpperCase(), v);
+	});
+}