wcstok(3) BSD Library Functions Manual wcstok(3)
wcstok -- split wide-character string into tokens
Standard C Library (libc, -lc)
#include <wchar.h> wchar_t * wcstok(wchar_t *restrict ws1, const wchar_t *restrict ws2, wchar_t **restrict ptr);
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.
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.
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);
Some early implementations of wcstok() omit the context pointer argument, ptr, and maintain state across calls in a static variable like strtok() does.
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