wchar_t
*
wcstok(
wchar_t * restrict str
, const wchar_t * restrict sep
, wchar_t ** restrict last
)
)
function
is used to isolate sequential tokens in a nul-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.
)
function
returns a pointer to the beginning of each subsequent token in the string,
after replacing the token itself with a nul wide character (L'\0').
When no more tokens remain, a null pointer is returned.
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);
)
function
conforms to
ISO/IEC 9899:1999 (``ISO C99'') .
Some early implementations of
wcstok()
omit the context pointer argument,
last
,
and maintain state across calls in a static variable like
strtok(3)
does.