Manpage of WCSTOK
WCSTOKSection: Linux Programmer's Manual (3)
NAMEwcstok - split wide-character string into tokens
#include <wchar.h>wchar_t *wcstok(wchar_t *wcs, const wchar_t *delim, wchar_t **ptr);
DESCRIPTIONThe 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 wcsinto tokens, where a token is defined as a substring not containing any wide-characters from delim.
The search starts at wcs, if wcsis not NULL, or at *ptr, if wcsis 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 thewide-character which occurs in delimwith a null wide character (Laq\0aq), and it updates *ptrso that subsequent calls will continue searching after the end of recognized token.
RETURN VALUEThe wcstok() function returns a pointer to the token, or NULL if no further token was found.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7).
CONFORMING TOPOSIX.1-2001, POSIX.1-2008, C99.
NOTESThe original wcswide-character string is destructively modified during the operation.
EXAMPLEThe following code loops over the tokens contained in a wide-character string.
SEE ALSOstrtok(3), wcschr(3)
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