Added JsonContainer::prettyPrintTo()

srcs/Internals/PrettyJsonWriter.h

@@ -0,0 +1,54 @@
+#pragma once
+
+#include "JsonWriter.h"
+#include "IndentedPrint.h"
+
+using namespace ArduinoJson::Generator;
+
+class PrettyJsonWriter : public JsonWriter
+{
+public:
+    explicit PrettyJsonWriter(IndentedPrint& sink)
+        : JsonWriter(sink), _indenter(sink)
+    {
+    }
+
+    virtual void beginArray()
+    {
+        _length += _sink.write('[');
+        _indenter.indent();
+        _length += _indenter.println();
+    }
+
+    virtual void endArray()
+    {
+        _length += _indenter.println();
+        _indenter.unindent();
+        _length += _sink.write(']');
+    }
+
+    virtual void writeColon()
+    {
+        _length += _sink.print(": ");
+    }
+
+    virtual void writeComma()
+    {
+        _length += _sink.write(',');
+        _length += _indenter.println();
+    }
+
+    virtual void beginObject()
+    {
+        _length += _sink.write('{');
+    }
+
+    virtual void endObject()
+    {
+        _length += _sink.write('}');
+        _indenter.unindent();
+    }
+
+private:
+    IndentedPrint& _indenter;
+};