Add Mumble support (#1245)

vendor/layeh.com/gumble/gumbleutil/channel.go

@@ -0,0 +1,18 @@
+package gumbleutil
+
+import (
+	"layeh.com/gumble/gumble"
+)
+
+// ChannelPath returns a slice of channel names, starting from the root channel
+// to the given channel.
+func ChannelPath(channel *gumble.Channel) []string {
+	var pieces []string
+	for ; channel != nil; channel = channel.Parent {
+		pieces = append(pieces, channel.Name)
+	}
+	for i := 0; i < (len(pieces) / 2); i++ {
+		pieces[len(pieces)-1-i], pieces[i] = pieces[i], pieces[len(pieces)-1-i]
+	}
+	return pieces
+}