From 62045c958b0d58d61e6d22deb88eed7b9ae28a4e Mon Sep 17 00:00:00 2001
From: Runxi Yu <me@runxiyu.org>
Date: Sat, 22 Mar 2025 01:17:06 +0800
Subject: Basic IRCv3 message parser

---
 source.go | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 source.go

(limited to 'source.go')

diff --git a/source.go b/source.go
new file mode 100644
index 0000000..8fc9848
--- /dev/null
+++ b/source.go
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: MIT
+// SPDX-FileCopyrightText: Copyright (c) 2025 Runxi Yu <https://runxiyu.org>
+
+package irc
+
+import "bytes"
+
+type Source interface {
+	AsSourceString() string
+}
+
+func parseSource(s []byte) Source {
+	nick, userhost, found := bytes.Cut(s, []byte{'!'})
+	if !found {
+		return Server{name: bytesToString(s)}
+	}
+
+	user, host, found := bytes.Cut(userhost, []byte{'@'})
+	if !found {
+		return Server{name: bytesToString(s)}
+	}
+
+	return Client{
+		Nick: bytesToString(nick),
+		User: bytesToString(user),
+		Host: bytesToString(host),
+	}
+}
+
+type Server struct {
+	name string
+}
+
+func (s Server) AsSourceString() string {
+	return s.name
+}
+
+type Client struct {
+	Nick string
+	User string
+	Host string
+}
+
+func (c Client) AsSourceString() string {
+	return c.Nick + "!" + c.User + "@" + c.Host
+}
-- 
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