Added CharTools functionality

Src/CharTools.h

@@ -0,0 +1,41 @@
+#ifndef STRINGTOOLS_CHARTOOLS_H
+#define STRINGTOOLS_CHARTOOLS_H
+
+#include <string>
+
+/* Handy utensils to manipulate characters */
+
+class CharTools {
+public:
+    //! Checks whether or not `c` is a vowel. You can define custom vowel characters.
+    static bool IsVowel(const char c, const std::string& vowels = "euioay");
+
+    //! Returns whether or not `c` is a letter.
+    static bool IsLetter(const char c);
+
+    //! Returns whether or not `c` is a generic character (that contains JUST the sign)
+    static bool IsGeneric(const char c);
+
+    //! Checks whether or not `c` is an uppercase character.
+    static bool IsUpper(const char c);
+
+    //! Will return `c` as an uppercase character.
+    static char MakeUpper(char c);
+
+    //! Will return `c` as a lowercase character.
+    static char MakeLower(char c);
+
+    //! Will return an empty character with the same sign/capitalization as `c`.
+    static char GetSign(char c);
+
+    //! Will return `c` with the same capitalization as `sign`.
+    static char CopySign(char sign, char c);
+
+    //! Generic uppercase character.
+    static constexpr char UPPERCASE = 0;
+
+    //! Generic lowercase character.
+    static constexpr char LOWERCASE = (1<<5);
+};
+
+#endif //STRINGTOOLS_CHARTOOLS_H