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''), and
       it updates *ptr so that subsequent calls will continue searching after the end of recognized token.

RETURN VALUE

       The wcstok() function returns a pointer to the next token, or NULL if no further token was found.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +----------+---------------+---------+
       |Interface | Attribute	  | Value   |
       +----------+---------------+---------+
       |wcstok()  | Thread safety | MT-Safe |
       +----------+---------------+---------+
CONFORMING TO

       POSIX.1-2001, POSIX.1-2008, C99.

NOTES

       The original wcs wide-character string is destructively modified during the operation.

EXAMPLE

       The following code loops over the tokens contained in a wide-character string.

       wchar_t *wcs = ...;
       wchar_t *token;
       wchar_t *state;
       for (token = wcstok(wcs, " 	
", &state);
	   token != NULL;
	   token = wcstok(NULL, " 	
", &state)) {
	   ...
       }

SEE ALSO

       strtok(3), wcschr(3)

COLOPHON

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       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

GNU
								    2015-08-08								 WCSTOK(3)