move helper method to SymbolString

src/lib/ebus/message.cpp

@@ -935,20 +935,6 @@ void Message::dumpField(const string& fieldName, bool withConditions, OutputForm
   dumpAttribute(false, outputFormat, fieldName, output);
 }
 
-void addData(const SymbolString& data, ostringstream* output) {
-  if (data.size() == 0) {
-    return;
-  }
-  *output << ",\n    \"" << (data.isMaster() ? "master" : "slave") << "\": [";
-  for (size_t pos = 0; pos < data.size(); pos++) {
-    if (pos > 0) {
-      *output << ", ";
-    }
-    *output << dec << static_cast<unsigned>(data[pos]);
-  }
-  *output << "]";
-}
-
 void Message::decodeJson(bool leadingSeparator, bool appendDirectionCondition, bool withData, bool addRaw,
                          OutputFormat outputFormat, ostringstream* output) const {
   outputFormat |= OF_JSON;
@@ -1005,8 +991,8 @@ void Message::decodeJson(bool leadingSeparator, bool appendDirectionCondition, b
     appendAttributes(outputFormat, output);
     if (hasData) {
       if (addRaw) {
-        addData(m_lastMasterData, output);
-        addData(m_lastSlaveData, output);
+        m_lastMasterData.dumpJson(true, output);
+        m_lastSlaveData.dumpJson(true, output);
         *output << dec;
       }
       size_t pos = (size_t)output->tellp();

src/lib/ebus/symbol.cpp

@@ -28,6 +28,7 @@ namespace ebusd {
 using std::ostringstream;
 using std::nouppercase;
 using std::setw;
+using std::dec;
 using std::hex;
 using std::setfill;
 
@@ -157,6 +158,24 @@ const string SymbolString::getStr(size_t skipFirstSymbols) const {
   return sstr.str();
 }
 
+bool SymbolString::dumpJson(bool withSeparator, ostringstream* output) const {
+  if (size() == 0) {
+    return false;
+  }
+  if (withSeparator) {
+    *output << ",\n    ";
+  }
+  *output << "\"" << (isMaster() ? "master" : "slave") << "\": [";
+  for (size_t pos = 0; pos < size(); pos++) {
+    if (pos > 0) {
+      *output << ", ";
+    }
+    *output << dec << static_cast<unsigned>(m_data[pos]);
+  }
+  *output << "]";
+  return true;
+}
+
 symbol_t SymbolString::calcCrc() const {
   symbol_t crc = 0;
   for (size_t i = 0; i < m_data.size(); i++) {

src/lib/ebus/symbol.h

@@ -67,6 +67,7 @@ namespace ebusd {
 
 using std::string;
 using std::vector;
+using std::ostringstream;
 
 /** the base type for symbols sent to/from the eBUS. */
 typedef unsigned char symbol_t;
@@ -158,6 +159,14 @@ class SymbolString {
    */
   const string getStr(size_t skipFirstSymbols = 0) const;
 
+  /**
+   * Dump the data in JSON format to the output.
+   * @param withSeparator true to prepend the field separator.
+   * @param output the @a ostringstream to format the messages to.
+   * @return true if something was written to the output.
+   */
+  bool dumpJson(bool withSeparator, ostringstream* output) const;
+
   /**
    * Return a reference to the symbol at the specified index.
    * @param index the index of the symbol to return.