From 1e5598cde1673ddf0a35527522bd7dea8482f44c Mon Sep 17 00:00:00 2001
From: Tomasz Sowa <t.sowa@ttmath.org>
Date: Tue, 6 Jul 2021 21:44:04 +0200
Subject: [PATCH] added to Date: SerializeMonthAsRoman(Stream & out, int month)
 - serialize month in Roman numerals added a param: 'bool roman_month' to some
 serialize methods

---
 src/date/date.h | 61 +++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 49 insertions(+), 12 deletions(-)

diff --git a/src/date/date.h b/src/date/date.h
index 59938c3..c9ba433 100644
--- a/src/date/date.h
+++ b/src/date/date.h
@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2012-2018, Tomasz Sowa
+ * Copyright (c) 2012-2021, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -251,12 +251,21 @@ public:
 	int WeekDay() const;
 
 
+	/*
+		this method outputs to the given stream the number of a month in Roman numerals
+		e.g: if month is equal to 3 then III will be put to 'out'
+		month should be in the range [1,12]
+	 */
+	template<class Stream>
+	static void SerializeMonthAsRoman(Stream & out, int month);
+
+
 	/*
 		this method outputs to the given stream: YYYY-MM-DD, eg. 1990-02-12
 		ISO 8601 format
 	*/
 	template<class Stream>
-	void SerializeYearMonthDay(Stream & out) const;
+	void SerializeYearMonthDay(Stream & out, bool roman_month = false) const;
 
 
 	/*
@@ -271,7 +280,7 @@ public:
 		this method outputs to the given stream: MM-DD, eg. 02-12 (02 month, 12 day)
 	*/
 	template<class Stream>
-	void SerializeMonthDay(Stream & out) const;
+	void SerializeMonthDay(Stream & out, bool roman_month = false) const;
 
 
 	/*
@@ -286,7 +295,7 @@ public:
 		ISO 8601 format
 	*/
 	template<class Stream>
-	void Serialize(Stream & out) const;
+	void Serialize(Stream & out, bool roman_month = false, bool with_seconds = true) const;
 
 
 	/*
@@ -547,13 +556,32 @@ void Date::SerializeInt(Stream & out, int val) const
 }
 
 
+template<class Stream>
+void Date::SerializeMonthAsRoman(Stream & out, int month)
+{
+	const char * month_roman[] = { "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX", "X", "XI", "XII" };
+
+	if( month >= 1 && month <= 12 )
+	{
+		const char * month_str = month_roman[month - 1];
+
+		for( ; *month_str ; ++month_str)
+			out << *month_str;
+	}
+}
+
 
 template<class Stream>
-void Date::SerializeYearMonthDay(Stream & out) const
+void Date::SerializeYearMonthDay(Stream & out, bool roman_month) const
 {
 	SerializeInt(out, year, 4);
 	out	<< '-';
-	SerializeInt(out, month);
+
+	if( roman_month )
+		SerializeMonthAsRoman(out, month);
+	else
+		SerializeInt(out, month);
+
 	out	<< '-';
 	SerializeInt(out, day);
 }
@@ -571,9 +599,13 @@ void Date::SerializeHourMinSec(Stream & out) const
 
 
 template<class Stream>
-void Date::SerializeMonthDay(Stream & out) const
+void Date::SerializeMonthDay(Stream & out, bool roman_month) const
 {
-	SerializeInt(out, month);
+	if( roman_month )
+		SerializeMonthAsRoman(out, month);
+	else
+		SerializeInt(out, month);
+
 	out	<< '-';
 	SerializeInt(out, day);
 }
@@ -589,17 +621,22 @@ void Date::SerializeHourMin(Stream & out) const
 
 
 template<class Stream>
-void Date::Serialize(Stream & out) const
+void Date::Serialize(Stream & out, bool roman_month, bool with_seconds) const
 {
-	SerializeYearMonthDay(out);
+	SerializeYearMonthDay(out, roman_month);
 	out << ' ';
-	SerializeHourMinSec(out);
+
+	if( with_seconds )
+		SerializeHourMinSec(out);
+	else
+		SerializeHourMin(out);
 }
 
+
 template<class Stream>
 void Date::SerializeISO(Stream & out) const
 {
-	SerializeYearMonthDay(out);
+	SerializeYearMonthDay(out, false);
 	out << 'T';
 	SerializeHourMinSec(out);
 	out << 'Z';