Add ellipsis when debug message too long

code/espurna/debug.ino

@@ -20,16 +20,22 @@ void debugSend(const char * format, ...) {
 
     va_list args;
     va_start(args, format);
-    ets_vsnprintf(buffer, DEBUG_MESSAGE_MAX_LENGTH, format, args);
+    int len = ets_vsnprintf(buffer, DEBUG_MESSAGE_MAX_LENGTH, format, args);
     va_end(args);
 
     #ifdef DEBUG_PORT
         DEBUG_PORT.printf(buffer);
+        if (len > DEBUG_MESSAGE_MAX_LENGTH) {
+            DEBUG_PORT.printf(" (...)\n");
+        }
     #endif
 
     #ifdef DEBUG_UDP_IP
         udpDebug.beginPacket(DEBUG_UDP_IP, DEBUG_UDP_PORT);
         udpDebug.write(buffer);
+        if (len > DEBUG_MESSAGE_MAX_LENGTH) {
+            udpDebug.write(" (...)\n");
+        }
         udpDebug.endPacket();
     #endif
 
@@ -37,23 +43,29 @@ void debugSend(const char * format, ...) {
 
 void debugSend_P(PGM_P format, ...) {
 
-    char buffer[DEBUG_MESSAGE_MAX_LENGTH+1];
-
     char f[DEBUG_MESSAGE_MAX_LENGTH+1];
     memcpy_P(f, format, DEBUG_MESSAGE_MAX_LENGTH);
 
+    char buffer[DEBUG_MESSAGE_MAX_LENGTH+1];
+
     va_list args;
     va_start(args, format);
-    ets_vsnprintf(buffer, DEBUG_MESSAGE_MAX_LENGTH, f, args);
+    int len = ets_vsnprintf(buffer, DEBUG_MESSAGE_MAX_LENGTH, f, args);
     va_end(args);
 
     #ifdef DEBUG_PORT
         DEBUG_PORT.printf(buffer);
+        if (len > DEBUG_MESSAGE_MAX_LENGTH) {
+            DEBUG_PORT.printf(" (...)\n");
+        }
     #endif
 
     #ifdef DEBUG_UDP_IP
         udpDebug.beginPacket(DEBUG_UDP_IP, DEBUG_UDP_PORT);
         udpDebug.write(buffer);
+        if (len > DEBUG_MESSAGE_MAX_LENGTH) {
+            udpDebug.write(" (...)\n");
+        }
         udpDebug.endPacket();
     #endif