pskpatil · January 2, 2022 00:29 · Jan 5, 2016
diff --git a/rapidjson_gen_json.cpp b/rapidjson_gen_json.cpp
@@ -0,0 +1,121 @@
+#ifdef SHELL
+g++ -Wall -Werror -g -I../../cclib/rapidjson/include $0 && ./a.out
+exit 0
+#endif
+
+// Output is:
+// {"project":"rapidjson","stars":11}
+// {"Name":"XYZ","Rollnumer":2,"array":["hello","world"],"Marks":{"Math":"50","Science":"70","English":"50","Social Science":"70"}}
+// {"FromEmail":"[email protected]","FromName":"Sender's name","Subject":"My subject","Recipients":[{"Email":"[email protected]"}],"Text-part":"this is my text"}
+
+
+#include "rapidjson/document.h"
+#include "rapidjson/writer.h"
+#include "rapidjson/stringbuffer.h"
+#include <iostream>
+
+using namespace rapidjson;
+
+// https://github.com/miloyip/rapidjson#usage-at-a-glance
+void sample_basic() {
+	// 1. Parse a JSON string into DOM.
+    const char* json = "{\"project\":\"rapidjson\",\"stars\":10}";
+    Document d;
+    d.Parse(json);
+
+    // 2. Modify it by DOM.
+    Value& s = d["stars"];
+    s.SetInt(s.GetInt() + 1);
+
+    // 3. Stringify the DOM
+    StringBuffer buffer;
+    Writer<StringBuffer> writer(buffer);
+    d.Accept(writer);
+
+    // Output {"project":"rapidjson","stars":11}
+    std::cout << buffer.GetString() << std::endl;
+}
+
+void sample_other() {
+		// document is the root of a json message
+	rapidjson::Document document;
+
+	// define the document as an object rather than an array
+	document.SetObject();
+
+	// create a rapidjson array type with similar syntax to std::vector
+	rapidjson::Value array(rapidjson::kArrayType);
+
+	// must pass an allocator when the object may need to allocate memory
+	rapidjson::Document::AllocatorType& allocator = document.GetAllocator();
+
+	// chain methods as rapidjson provides a fluent interface when modifying its objects
+	array.PushBack("hello", allocator).PushBack("world", allocator);//"array":["hello","world"]
+
+	document.AddMember("Name", "XYZ", allocator);
+	document.AddMember("Rollnumer", 2, allocator);
+	document.AddMember("array", array, allocator);
+
+	// create a rapidjson object type
+	rapidjson::Value object(rapidjson::kObjectType);
+	object.AddMember("Math", "50", allocator);
+	object.AddMember("Science", "70", allocator);
+	object.AddMember("English", "50", allocator);
+	object.AddMember("Social Science", "70", allocator);
+	document.AddMember("Marks", object, allocator);
+	//	fromScratch["object"]["hello"] = "Yourname";
+
+	StringBuffer strbuf;
+	Writer<StringBuffer> writer(strbuf);
+	document.Accept(writer);
+
+	std::cout << strbuf.GetString() << std::endl;
+}
+
+void sample_sendapi() {
+	Document d;
+	Document::AllocatorType& alloc = d.GetAllocator();
+
+	std::string mytext = "this is my text";
+
+	d.SetObject();
+
+	d.AddMember("FromEmail", "[email protected]", alloc);
+	d.AddMember("FromName", "Sender's name", alloc);
+	d.AddMember("Subject", "My subject", alloc);
+
+
+	{
+		Value recipients(kArrayType);
+
+		{	
+			Value recipient(kObjectType);
+			recipient.AddMember("Email", "[email protected]", alloc);
+			recipients.PushBack(recipient, alloc);
+		}
+
+		d.AddMember("Recipients", recipients, alloc);
+	}
+
+	{
+		Value textPart;
+		textPart.SetString(mytext.c_str(), alloc);
+		d.AddMember("Text-part", textPart, alloc);
+	}
+
+	StringBuffer buffer;
+    Writer<StringBuffer> writer(buffer);
+    d.Accept(writer);
+
+	std::cout << buffer.GetString() << std::endl;
+}
+
+int main() {
+	sample_basic();
+
+	sample_other();
+
+	sample_sendapi();
+
+    return 0;
+}