Added JsonContainer::prettyPrintTo()

srcs/Internals/IndentedPrint.cpp

@@ -0,0 +1,45 @@
+#include "IndentedPrint.h"
+
+using namespace ArduinoJson::Generator;
+
+void IndentedPrint::indent()
+{
+    if (level < MAX_LEVEL)
+        level++;
+}
+
+void IndentedPrint::unindent()
+{
+    if (level > 0)
+        level--;
+}
+
+void IndentedPrint::setTabSize(uint8_t n)
+{
+    if (n < MAX_TAB_SIZE)
+        tabSize = n;
+}
+
+size_t IndentedPrint::write(uint8_t c)
+{
+    size_t n = 0;
+
+    if (isNewLine)
+        n += writeTabs();
+
+    n += sink.write(c);
+
+    isNewLine = c == '\n';
+
+    return n;
+}
+
+inline size_t IndentedPrint::writeTabs()
+{
+    size_t n = 0;
+
+    for (int i = 0; i < level*tabSize; i++)
+        n += sink.write(' ');
+
+    return n;
+}