From f97c06d4418cc06115b1ba17d8a95a2eee745a8b Mon Sep 17 00:00:00 2001
From: Tomasz Sowa <t.sowa@ttmath.org>
Date: Sat, 22 Oct 2022 16:26:14 +0200
Subject: [PATCH] add a check_time_zone parameter when parsing a date

---
 src/date/date.h | 78 +++++++++++++++++++++++++++++--------------------
 1 file changed, 46 insertions(+), 32 deletions(-)

diff --git a/src/date/date.h b/src/date/date.h
index 6400ea6..34b94ef 100644
--- a/src/date/date.h
+++ b/src/date/date.h
@@ -5,7 +5,7 @@
  */
 
 /* 
- * Copyright (c) 2012-2021, Tomasz Sowa
+ * Copyright (c) 2012-2022, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -494,11 +494,13 @@ public:
 		(by using IsCorrectDate())
 	*/
 	template<class CStringType>
-	bool Parse(const CStringType * str, const CStringType ** str_after = 0);
+	bool Parse(const CStringType * str, const CStringType ** str_after, bool check_time_zone = true);
+
+	template<class CStringType>
+	bool Parse(const CStringType * str, bool check_time_zone = true);
 
 	template<class StringType>
-	bool Parse(const StringType & str);
-
+	bool Parse(const StringType & str, bool check_time_zone = true);
 
 
 private:
@@ -897,53 +899,65 @@ bool Date::ParseMonthDayTime(const StringType & str)
 
 
 template<class CStringType>
-bool Date::Parse(const CStringType * str, const CStringType ** str_after)
+bool Date::Parse(const CStringType * str, const CStringType ** str_after, bool check_time_zone)
 {
-const CStringType * after;
-bool result = false;
+	const CStringType * after;
+	bool result = false;
 
-	if( ParseYearMonthDay(str, &after) )
-	{
-		SkipWhite(after);
-
-		if( *after == 'T' )
-		{
-			// ISO 8601 format
-			// https://en.wikipedia.org/wiki/ISO_8601
-			// at the moment skip the 'T' character only
-			after += 1;
-		}
-
-		if( ParseHourMinSec(after, &after) )
+		if( ParseYearMonthDay(str, &after) )
 		{
 			SkipWhite(after);
-			result = true;
 
-			if( *after == 'Z' )
+			if( check_time_zone && *after == 'T' )
 			{
+				// ISO 8601 format
+				// https://en.wikipedia.org/wiki/ISO_8601
+				// at the moment skip the 'T' character only
 				after += 1;
 			}
-			else
+
+			if( ParseHourMinSec(after, &after) )
 			{
-				// we dont have to check errors here
-				ParseZoneOffset(after, &after);
+				SkipWhite(after);
+				result = true;
+
+				if( check_time_zone )
+				{
+					if( *after == 'Z' )
+					{
+						after += 1;
+					}
+					else
+					{
+						// we dont have to check errors here
+						ParseZoneOffset(after, &after);
+					}
+				}
 			}
 		}
-	}
 
-	SetAfter(after, str_after);
+		SetAfter(after, str_after);
 
-	if( result )
-		result = IsCorrectDate();
+		if( result )
+			result = IsCorrectDate();
 
-return result;
+	return result;
+}
+
+
+template<class CStringType>
+bool Date::Parse(const CStringType * str, bool check_time_zone)
+{
+	const CStringType * str_after = nullptr;
+	return Parse(str, &str_after, check_time_zone);
 }
 
 
 template<class StringType>
-bool Date::Parse(const StringType & str)
+bool Date::Parse(const StringType & str, bool check_time_zone)
 {
-	return Parse(str.c_str());
+	const typename StringType::value_type * after_string = nullptr;
+	return Parse(str.c_str(), &after_string, check_time_zone);
 }