client tags: better detection for Revolution IRC and HoloIRC

--HG--
branch : nmdc-ircfrontend

clientTag.go

@@ -10,14 +10,22 @@ type clientTag struct {
 }
 
 func parseVersion(ver string) clientTag {
-	// A bit long and unwieldy.
-	// Heuristic: keep the first word, and the the first word containing digits
-
+	// Try our best to turn the supplied text into a structured version
 	ret := clientTag{
 		AppName: APP_NAME,
 		Version: APP_VERSION,
 	}
 
+	// Special case: Some clients use a structured version AppName:Version:Metadata
+	// If we check for that, we can support clients with spaces in the name
+	if cParts := strings.Split(ver, ":"); len(cParts) == 3 {
+		ret.AppName = cParts[0]
+		ret.Version = cParts[1]
+
+	} else {
+
+		// Special cases all failed, time for heuristics
+		// Turn colons to spaces; keep the first word, and the the first word containing digits
 		ver = strings.Trim(strings.Replace(ver, ":", " ", -1), " ")
 
 		words := strings.Split(ver, " ")
@@ -29,11 +37,18 @@ func parseVersion(ver string) clientTag {
 				break
 			}
 		}
+	}
 
 	// Strip leading v from mIRC
 	if len(ret.Version) >= 2 && (ret.Version[0] == 'v' || ret.Version[0] == 'V') && strings.ContainsAny(string(ret.Version[1]), "0123456789") {
 		ret.Version = ret.Version[1:]
 	}
 
+	// Special case: "Relay" means "HoloIRC"
+	if ret.AppName == "Relay" && ret.Version == "1.0" && strings.Contains(ver, "Android") {
+		ret.AppName = "HoloIRC"
+		ret.Version = "4"
+	}
+
 	return ret
 }

clientTag_test.go

@@ -29,8 +29,13 @@ func TestParseVersion(t *testing.T) {
 		},
 
 		[3]string{
-			":Relay:1.0:Android",
-			"Relay", "1.0",
+			":Relay:1.0:Android", // HoloIRC before 4.1.0
+			"HoloIRC", "4",
+		},
+
+		[3]string{
+			"Relay:1.0:Android", // HoloIRC after 4.1.0
+			"HoloIRC", "4",
 		},
 
 		[3]string{
@@ -40,7 +45,7 @@ func TestParseVersion(t *testing.T) {
 
 		[3]string{
 			"Revolution IRC:0.3.2:Android",
-			"Revolution", "0.3.2",
+			"Revolution IRC", "0.3.2",
 		},
 	}
 

server.go

@@ -413,7 +413,8 @@ func (s *Server) handleRegisteredCommand(command string, args []string) {
 			return
 		}
 
-		message := strings.Join(args[1:], " ")[1:] // strip leading colon
+		// Strip leading colon (work around a bug in HoloIRC 4.1.0 and older)
+		message := strings.Join(args[1:], " ")[1:]
 
 		if strings.HasPrefix(message, "\x01VERSION ") {
 			// Not a real message - a reply to our internal request. Change the user's tag to match the actual client software