add value list support

contrib/etc/ebusd/mqtt-hassio.cfg

@@ -200,12 +200,13 @@ type_switch-number =
 type_switch-w-list =
     switch,, = onoff
     switch,,,yesno = yesno
+    select,, =
 
 # HA integration: the mapping list for rather binary sensor entities by field type, name, message, and unit.
 type_switch-list =
     binary_sensor,,measurement = onoff
     binary_sensor,,measurement,yesno = yesno
-    sensor,, =
+    sensor,,,list =
 
 # HA integration: currently unused mapping lists for non-numeric/non-binary entities.
 #type_switch-string =
@@ -278,6 +279,24 @@ type_part-binary_sensoryesno = ,
   "payload_on":"yes",
   "payload_off":"no"%state_class
 
+# optional format string for converting a fields value list into %field_values.
+# "$value" and "$text" are being replaced by the corresponding part.
+field_values-entry = "$text"
+# optional separator for concatenating of field value list items.
+field_values-separator = ,
+# optional prefix for surrounding field value list items.
+field_values-prefix = [
+# optional suffix for surrounding field value list items.
+field_values-suffix = ]
+
+# HA integration: %type_part variable for select %type_topic and sensor with list of known values
+type_part-select = ,
+  "command_topic":"%topic/set",
+  "options":%field_values
+type_part-sensorlist = ,
+  "device_class":"enum",
+  "options":%field_values
+
 # the field specific part (evaluated after the message specific part).
 # HA integration: set to the mapped %type_part from above
 field_payload = %type_part

contrib/etc/ebusd/mqtt-integration.cfg

@@ -149,6 +149,17 @@ type_map-datetime = string
 #type_part-number = ,
 
 
+# optional format string for converting a fields value list into %field_values.
+# "$value" and "$text" are being replaced by the corresponding part.
+#field_values-entry = $text
+# optional separator for concatenating of field value list items.
+#field_values-separator = ,
+# optional prefix for surrounding field value list items.
+#field_values-prefix =
+# optional suffix for surrounding field value list items.
+#field_values-suffix =
+
+
 # the field specific part (evaluated after the message specific part).
 #field_payload = %type_part
 

src/ebusd/mqtthandler.cpp

@@ -1111,6 +1111,34 @@ void MqttHandler::run() {
               }
               values.set("step", ostr.str());
             }
+            if (dataType->isNumeric() && field->isList() && !values["field_values-entry"].empty()) {
+              auto vl = (dynamic_cast<const ValueListDataField*>(field))->getList();
+              string entryFormat = values["field_values-entry"];
+              string::size_type pos = -1;
+              while ((pos = entryFormat.find('$', pos+1)) != std::string::npos) {
+                if (entryFormat.substr(pos+1, 4) == "text" || entryFormat.substr(pos+1, 5) == "value") {
+                  entryFormat.replace(pos, 1, "%");
+                }
+              }
+              entryFormat.replace(0, 0, "entry = ");
+              string result = values["field_values-prefix"];
+              bool first = true;
+              for (const auto& it : vl) {
+                StringReplacers entry;
+                entry.parseLine(entryFormat);
+                entry.set("value", it.first);
+                entry.set("text", it.second);
+                entry.reduce();
+                if (first) {
+                  first = false;
+                } else {
+                  result += values["field_values-separator"];
+                }
+                result += entry.get("entry", false, false);
+              }
+              result += values["field_values-suffix"];
+              values.set("field_values", result);
+            }
             if (!m_typeSwitches.empty()) {
               values.reduce(true);
               str = values.get("type_switch-by", false, false);

src/lib/ebus/data.h

@@ -551,6 +551,10 @@ class ValueListDataField : public SingleDataField {
   // @copydoc
   void dump(bool prependFieldSeparator, OutputFormat outputFormat, ostream* output) const override;
 
+  /**
+   * @return the value=text assignments.
+   */
+  const map<unsigned int, string>& getList() const { return m_values; }
 
  protected:
   // @copydoc