truncate log MQTT contents when they are too long and remove all newline characters in logfile writes

code/components/jomjol_logfile/ClassLogFile.cpp

@@ -4,6 +4,7 @@
 #include <string.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <algorithm>
 
 #ifdef __cplusplus
 extern "C" {
@@ -206,6 +207,8 @@ void ClassLogFile::WriteToFile(esp_log_level_t level, std::string info, bool _ti
     strftime(buffer, 30, logfile.c_str(), timeinfo);
     std::string logpath = logroot + "/" + buffer; 
     
+    std::replace(info.begin(), info.end(), '\n', ' '); // Replace all newline characters
+
     WriteToDedicatedFile(logpath, level, info, _time);
     ESP_LOG_LEVEL(level, TAG, "%s", info.c_str());
 }

code/components/jomjol_mqtt/interface_mqtt.cpp

@@ -49,6 +49,11 @@ bool MQTTPublish(std::string _key, std::string _content, int retained_flag) {
         }
     }
 
+    if (_content.length() > 80) { // Truncate message if too long
+        _content.resize(80);
+        _content.append("..");
+    }
+
     zw = "MQTT - Published topic: " + _key + ", content: " + _content + " (msg_id=" + std::to_string(msg_id) + ")";
     LogFile.WriteToFile(ESP_LOG_DEBUG, zw);