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WCSTOK(3)                BSD Library Functions Manual                WCSTOK(3)

NAME
     wcstok -- split wide-character string into tokens

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <wchar.h>

     wchar_t *
     wcstok(wchar_t *restrict ws1, const wchar_t *restrict ws2, wchar_t **restrict ptr);

DESCRIPTION
     The wcstok() function is used to isolate sequential tokens in a null-terminated wide character string,
     ws1.  These tokens are separated in the string by at least one of the characters in ws2.  The first
     time that wcstok() is called, ws1 should be specified; subsequent calls, wishing to obtain further
     tokens from the same string, should pass a null pointer instead.  The separator string, ws2, must be
     supplied each time, and may change between calls.  The context pointer, ptr, must be provided on each
     call.

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

RETURN VALUES
     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
     The following code fragment splits a wide character string on ASCII space, tab, and newline characters,
     writing the resulting 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
     Some early implementations of wcstok() omit the context pointer argument, ptr, and maintain state
     across calls in a static variable like strtok() does.

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

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

BSD                             October 3, 2002                            BSD