Refactor recv() since we needed to rewrite send().

client/line.go

@@ -0,0 +1,56 @@
+package client
+
+import (
+	"strings"
+	"time"
+)
+
+// We parse an incoming line into this struct. Line.Cmd is used as the trigger
+// name for incoming event handlers, see *Conn.recv() for details.
+//   Raw =~ ":nick!user@host cmd args[] :text"
+//   Src == "nick!user@host"
+//   Cmd == e.g. PRIVMSG, 332
+type Line struct {
+	Nick, Ident, Host, Src string
+	Cmd, Raw               string
+	Args                   []string
+	Time                   *time.Time
+}
+
+func parseLine(s string) *Line {
+	line := &Line{Raw: s}
+	if s[0] == ':' {
+		// remove a source and parse it
+		if idx := strings.Index(s, " "); idx != -1 {
+			line.Src, s = s[1:idx], s[idx+1:len(s)]
+		} else {
+			// pretty sure we shouldn't get here ...
+			line.Src = s[1:len(s)]
+			return line
+		}
+
+		// src can be the hostname of the irc server or a nick!user@host
+		line.Host = line.Src
+		nidx, uidx := strings.Index(line.Src, "!"), strings.Index(line.Src, "@")
+		if uidx != -1 && nidx != -1 {
+			line.Nick = line.Src[0:nidx]
+			line.Ident = line.Src[nidx+1 : uidx]
+			line.Host = line.Src[uidx+1 : len(line.Src)]
+		}
+	}
+
+	// now we're here, we've parsed a :nick!user@host or :server off
+	// s should contain "cmd args[] :text"
+	args := strings.Split(s, " :", 2)
+	if len(args) > 1 {
+		args = append(strings.Fields(args[0]), args[1])
+	} else {
+		args = strings.Fields(args[0])
+	}
+	line.Cmd = strings.ToUpper(args[0])
+	if len(args) > 1 {
+		line.Args = args[1:len(args)]
+	}
+	return line
+}
+