From 3b0b3a6b75dd5448b11139a2ac09f43f4a15587f Mon Sep 17 00:00:00 2001
From: JustinAJ <justin.aj@hotmail.com>
Date: Sat, 18 Oct 2014 07:16:35 -0400
Subject: [PATCH] Added calcChecksum() and calcChecksumi() to Readable_String.

---
 Jupiter/Readable_String.h     | 21 ++++++++++++++++++
 Jupiter/Readable_String_Imp.h | 41 +++++++++++++++++++++++++++++++++++
 2 files changed, 62 insertions(+)

diff --git a/Jupiter/Readable_String.h b/Jupiter/Readable_String.h
index 431ca7a..5459e50 100644
--- a/Jupiter/Readable_String.h
+++ b/Jupiter/Readable_String.h
@@ -219,6 +219,24 @@ namespace Jupiter
 		*/
 		double asDouble() const;
 
+		/**
+		* @brief Sums together all of the elements in the string.
+		*
+		* @param T Integral type to return
+		*
+		* @return Sum of all the elements in the string
+		*/
+		template<typename R = unsigned int> R calcChecksum() const;
+
+		/**
+		* @brief Sums together the uppercase version of all of the elements in the string.
+		*
+		* @param T Integral type to return
+		*
+		* @return Sum of all the elements in the string
+		*/
+		template<typename R = unsigned int> R calcChecksumi() const;
+
 		/**
 		* @brief Outputs the string to a FILE stream.
 		*
@@ -320,6 +338,9 @@ namespace Jupiter
 
 		/** Conversion operators */
 		explicit inline operator std::basic_string<T>() { return std::basic_string<T>(this->ptr(), this->size()); }
+
+	private:
+		template<typename R> R calcChecksumiHelper() const;
 	};
 
 	/** Generic Readable String Type */
diff --git a/Jupiter/Readable_String_Imp.h b/Jupiter/Readable_String_Imp.h
index 7ede4d3..ecb29db 100644
--- a/Jupiter/Readable_String_Imp.h
+++ b/Jupiter/Readable_String_Imp.h
@@ -992,6 +992,47 @@ template<typename T> double Jupiter::Readable_String<T>::asDouble() const
 	return 0;
 }
 
+// calcChecksum
+
+template<typename T> template<typename R> R Jupiter::Readable_String<T>::calcChecksum() const
+{
+	R sum = 0;
+	size_t index = this->size();
+	while (index != 0)
+		sum += this->get(--index);
+	return sum;
+}
+
+// calcChecksumi
+
+template<typename T> template<typename R> R Jupiter::Readable_String<T>::calcChecksumi() const
+{
+	return this->calcChecksumiHelper<R>();
+}
+
+template<> template<typename R> R inline Jupiter::Readable_String<char>::calcChecksumiHelper() const
+{
+	R sum = 0;
+	size_t index = this->size();
+	while (index != 0)
+		sum += toupper(this->get(--index));
+	return sum;
+}
+
+template<> template<typename R> R inline Jupiter::Readable_String<wchar_t>::calcChecksumiHelper() const
+{
+	R sum = 0;
+	size_t index = this->size();
+	while (index != 0)
+		sum += towupper(this->get(--index));
+	return sum;
+}
+
+template<typename T> template<typename R> R Jupiter::Readable_String<T>::calcChecksumiHelper() const
+{
+	return this->calcChecksum<R>();
+}
+
 // Stream output
 
 template<typename T> size_t Jupiter::Readable_String<T>::print(FILE *out) const