WCSTOK(3) Linux Programmer's Manual WCSTOK(3)
NAME
wcstok - split wide-character string into tokens
SYNOPSIS
#include <wchar.h>
wchar_t *wcstok(wchar_t *wcs, const wchar_t *delim, wchar_t **ptr);
DESCRIPTION
The wcstok() function is the wide-character equivalent of the strtok(3) function, with an added argument to make it multithread-safe. It
can be used to split a wide-character string wcs into tokens, where a token is defined as a substring not containing any wide-characters
from delim.
The search starts at wcs, if wcs is not NULL, or at *ptr, if wcs is NULL. First, any delimiter wide-characters are skipped, that is, the
pointer is advanced beyond any wide-characters which occur in delim. If the end of the wide-character string is now reached, wcstok()
returns NULL, to indicate that no tokens were found, and stores an appropriate value in *ptr, so that subsequent calls to wcstok() will
continue to return NULL. Otherwise, the wcstok() function recognizes the beginning of a token and returns a pointer to it, but before
doing that, it zero-terminates the token by replacing the next wide-character which occurs in delim with a null wide character (L'