handle lines ending with only returns

Author: Samuel Sieb

components/serial/text_sensor/serial_text_sensor.cpp

@@ -15,17 +15,27 @@ void SerialTextSensor::loop() {
 }
 
 void SerialTextSensor::handle_char_(uint8_t c) {
-  if (c == '\r')
+  if (c == '\r') {
+    this->have_return_ = true;
+    this->publish_();
     return;
+  }
   if (c == '\n') {
-    std::string s(this->rx_message_.begin(), this->rx_message_.end());
-    this->publish_state(s);
-    this->rx_message_.clear();
+    if (!have_return_)
+      this->publish_();
+    this->have_return_ = false;
     return;
   }
+  this->have_return_ = false;
   this->rx_message_.push_back(c);
 }
 
+void SerialTextSensor::publish_() {
+  std::string s(this->rx_message_.begin(), this->rx_message_.end());
+  this->publish_state(s);
+  this->rx_message_.clear();
+}
+
 void SerialTextSensor::dump_config() { LOG_TEXT_SENSOR("", "Serial Sensor", this); }
 
 }  // namespace serial

components/serial/text_sensor/serial_text_sensor.h

@@ -15,7 +15,9 @@ class SerialTextSensor : public Component,  public text_sensor::TextSensor, publ
 
  protected:
   void handle_char_(uint8_t c);
+  void publish_();
   std::vector<uint8_t> rx_message_;
+  bool have_return_{false};
 };
 
 }  // namespace serial