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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-ter-
     minated 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 subse-
     quent 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 stan-
     dard 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

Mac OS X 10.8 - Generated Fri Aug 31 19:10:57 CDT 2012
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