Originální popis anglicky:
wcstok - split wide-character string into tokens
Návod, kniha: Linux Programmer's Manual
#include <wchar.h>
wchar_t *wcstok(wchar_t *wcs, const wchar_t *delim, wchar_t **ptr);
The
wcstok function is the wide-character equivalent of the
strtok
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, i.e.
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 L'\0' character, and it updates
*ptr so that
subsequent calls will continue searching after the end of recognized token.
The
wcstok function returns a pointer to the next token, or NULL if no
further token was found.
The original
wcs wide-character string is destructively modified during
the operation.
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, " \t\n", &state);
token != NULL;
token = wcstok(NULL, " \t\n", &state)) {
...
}
ISO/ANSI C, UNIX98
strtok(3),
wcschr(3)
