Added truncate() function to Reference_String.

Jupiter/Reference_String.h

@@ -61,6 +61,14 @@ namespace Jupiter
 		*/
 		const T *ptr() const;
 
+		/**
+		* @brief Truncates the string by a specified number of elements.
+		*
+		* @param n Number of elements to remove from the tail.
+		* @return New size of the String.
+		*/
+		virtual size_t truncate(size_t n);
+
 		/**
 		* @brief Sets the reference to point to an input string.
 		*

Jupiter/Reference_String_Imp.h

@@ -80,6 +80,16 @@ template<typename T> const T *Jupiter::Reference_String<T>::ptr() const
 	return Jupiter::Reference_String<T>::str;
 }
 
+// truncate
+
+template<typename T> size_t Jupiter::Reference_String<T>::truncate(size_t n)
+{
+	if (n >= Jupiter::Reference_String<T>::length) return (Jupiter::Reference_String<T>::length = 0);
+	return (Jupiter::Reference_String<T>::length -= n);
+}
+
+// set
+
 template<typename T> size_t Jupiter::Reference_String<T>::set(const Jupiter::Readable_String<T> &in)
 {
 	return this->set(in.ptr(), in.size());