Library provides <cctype>-based character class functions.
Functions can be used independently on the rest of the library by including just charclasses.h.
Note that all these functions are declared in a namespace idni::charclasses.
Functions are templated with a C template which can be either char or char32_t.
char templated functions wrap <cctype> functions of the same name from a global namespace.
For char32_t library provides simplified implementations so far so they can be used. But be aware that it is not a proper Unicode classification.
Though it is possible to implement proper classification with custom character class functions.
<cctype>-based character class functions:
template <typename C> bool isalnum(C c);
template <typename C> bool isalpha(C c);
template <typename C> bool isblank(C c);
template <typename C> bool iscntrl(C c);
template <typename C> bool isdigit(C c);
template <typename C> bool isgraph(C c);
template <typename C> bool islower(C c);
template <typename C> bool isprint(C c);
template <typename C> bool ispunct(C c);
template <typename C> bool isspace(C c);
template <typename C> bool isupper(C c);
template <typename C> bool isxdigit(C c);
Additionally there is also iseof() function:
template <typename C> bool iseof(C c);
// returns c == std::char_traits<C>::eof();