NAME    [Toc]    [Back]

     wcstok -- split wide-character string into tokens

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <wchar.h>

     wchar_t *
     wcstok(wchar_t * restrict str, const wchar_t * restrict sep,
	 wchar_t ** restrict last);

DESCRIPTION    [Toc]    [Back]

     The wcstok() function is used to isolate sequential tokens in a null-terminated
 wide character string, str.  These tokens are separated in the
     string by at least one of the characters in sep.  The first time that
     wcstok() is called, str should be specified; subsequent calls, wishing to
     obtain further tokens from the same string, should pass a null pointer
     instead.  The separator string, sep, must be supplied each time, and may
     change between calls.  The context pointer last must be provided on each
     call.

     The wcstok() function is the wide character counterpart of the strtok_r()
     function.

RETURN VALUES    [Toc]    [Back]

     The wcstok() function returns a pointer to the beginning of each subsequent
 token in the string, after replacing the token itself with a null
     wide character (L'\0').  When no more tokens remain, a null pointer is
     returned.

EXAMPLES    [Toc]    [Back]

     The following code fragment splits a wide character string on ASCII
     space, tab and newline characters and writes the tokens to standard output:


	   const wchar_t *seps = L" \t\n";
	   wchar_t *last, *tok, text[] = L" \none\ttwo\t\tthree  \n";

	   for (tok = wcstok(text, seps, &last); tok != NULL;
	       tok = wcstok(NULL, seps, &last))
		   wprintf(L"%ls\n", tok);

COMPATIBILITY    [Toc]    [Back]

     Some early implementations of wcstok() omit the context pointer argument,
     last, and maintain state across calls in a static variable like strtok()
     does.

SEE ALSO    [Toc]    [Back]

     strtok(3), wcschr(3), wcscspn(3), wcspbrk(3), wcsrchr(3), wcsspn(3)

STANDARDS    [Toc]    [Back]

     The wcstok() function conforms to ISO/IEC 9899:1999 (``ISO C99'').


FreeBSD 5.2.1			October 3, 2002 		 FreeBSD 5.2.1