added getFieldName()

src/lib/ebus/message.cpp

@@ -1043,7 +1043,7 @@ result_t ChainedMessage::storeLastData(const PartType partType, SymbolString& da
 
 void ChainedMessage::dumpColumn(ostream& output, size_t column, bool withConditions)
 {
-	if (column!=7) {
+	if (column!=COLUMN_ID) {
 		Message::dumpColumn(output, column, withConditions);
 		return;
 	}

src/lib/ebus/message.h

@@ -244,6 +244,13 @@ public:
 	 */
 	string getName() const { return m_name; }
 
+	/**
+	 * Get the specified field name.
+	 * @param fieldIndex the index of the field.
+	 * @return the field name, or the index as string if not unique or not available.
+	 */
+	virtual string getFieldName(signed char fieldIndex) const { return m_data->getName(fieldIndex); }
+
 	/**
 	 * Get whether this is a write message.
 	 * @return whether this is a write message.
@@ -510,7 +517,7 @@ public:
 	 * @param column the column index to write (see @p COLUMN_TYPE index constants).
 	 * @param withConditions whether to include the optional conditions prefix.
 	 */
-	virtual void dumpColumn(ostream& output, size_t column, bool withConditions);
+	virtual void dumpColumn(ostream& output, size_t column, bool withConditions=false);
 
 protected:
 
@@ -666,7 +673,7 @@ public:
 protected:
 
 	// @copydoc
-	virtual void dumpColumn(ostream& output, size_t column, bool withConditions);
+	virtual void dumpColumn(ostream& output, size_t column, bool withConditions=false);
 
 private: