Added new helper functions

src/app/HttpConstants.h

@@ -6,8 +6,87 @@ class HttpConstants
   public:
     enum HttpRequestMethod {UNDEFINED, GET, HEAD, POST, PUT, DELETE, CONNECT, OPTIONS, TRACE, PATCH};
     enum HttpVersion {UNKNOWN, HTTP_0_9, HTTP_1_1, HTTP_1_0, HTTP_2_0};
-    enum HttpMIMEType{UNKNOWN_MIME, TEXT_PLAIN, TEXT_CSS, TEXT_HTML, TEXT_JAVASCRIPT, APPLICATION_JSON, APPLICATION_X_WWW_FORM_URLENCODED, IMAGE_PNG, IMAGE_JPEG, AUDIO_MPEG, APPLICATION_OCTET_STREAM};
+    enum HttpMIMEType {UNKNOWN_MIME, TEXT_PLAIN, TEXT_CSS, TEXT_HTML, TEXT_JAVASCRIPT, APPLICATION_JSON, APPLICATION_X_WWW_FORM_URLENCODED, IMAGE_PNG, IMAGE_JPEG, AUDIO_MPEG, APPLICATION_OCTET_STREAM};
     enum HTTP_CODE {UNDEFINED_CODE, _100, _101, _200, _400, _401, _403, _404, _405, _500, _501};
+	
+	static char *httpVersionToString(HttpVersion v, char *buffer)
+	{
+    if(buffer == NULL)return NULL;
+    
+		switch(v)
+		{
+			case HttpVersion::HTTP_0_9:
+        strcpy_P(buffer, PSTR("HTTP/0.9"));
+				break;
+			case HttpVersion::HTTP_1_1:
+        strcpy_P(buffer, PSTR("HTTP/1.1"));
+				break;
+			case HttpVersion::HTTP_1_0:
+        strcpy_P(buffer, PSTR("HTTP/1.0"));
+				break;
+			case HttpVersion::HTTP_2_0:
+        strcpy_P(buffer, PSTR("HTTP/2.0"));
+				break;
+			default:
+        strcpy_P(buffer, PSTR("HTTP/1.1"));
+				break;
+		}
+   
+		return buffer;
+	}
+	
+	static char *httpMIMETypeToString(HttpMIMEType m, char *buffer)
+	{
+    if(buffer == NULL)return NULL;
+
+    switch(m)
+    {
+      case HttpMIMEType::TEXT_PLAIN:
+        sprintf_P(buffer, PSTR("text/plain"));
+        break;
+      case HttpMIMEType::APPLICATION_JSON:
+        sprintf_P(buffer, PSTR("application/json"));
+        break;
+      case HttpMIMEType::APPLICATION_X_WWW_FORM_URLENCODED:
+        sprintf_P(buffer, PSTR("application/x-www-form-urlencoded"));
+        break;
+      default:
+        sprintf_P(buffer, PSTR("text/plain"));
+        break;
+    }
+    
+		return buffer;
+	}
+
+  static HTTP_CODE numberToHTTP_CODE(uint32_t code)
+  {
+    switch(code)
+    {
+      case 100:
+        return HTTP_CODE::_100;
+      case 101:
+        return HTTP_CODE::_101;
+      case 200:
+        return HTTP_CODE::_200;
+      case 400:
+        return HTTP_CODE::_400;
+      case 401:
+        return HTTP_CODE::_401;
+      case 403:
+        return HTTP_CODE::_403;
+      case 404:
+        return HTTP_CODE::_404;
+      case 405:
+        return HTTP_CODE::_405;
+      case 500:
+        return HTTP_CODE::_500;
+      case 501:
+        return HTTP_CODE::_501;
+      default :
+        return HTTP_CODE::UNDEFINED_CODE;
+    }
+  }
+  
   protected:
   private:
 };