4.4BSD/usr/share/man/cat3/strtok.0

STRTOK(3)                   BSD Programmer's Manual                  STRTOK(3)

NNAAMMEE
     ssttrrttookk, ssttrrsseepp - string token operations

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<ssttrriinngg..hh>>

     _c_h_a_r _*
     ssttrrttookk(_c_h_a_r _*_s_t_r, _c_o_n_s_t _c_h_a_r _*_s_e_p);

DDEESSCCRRIIPPTTIIOONN
     TThhiiss iinntteerrffaaccee iiss oobbssoolleetteedd bbyy ssttrrsseepp((33))..

     The ssttrrttookk() function is used to isolate sequential tokens in a null-
     terminated string, _s_t_r. These tokens are separated in the string by at
     least one of the characters in _s_e_p. The first time that ssttrrttookk() is
     called, _s_t_r should be specified; subsequent calls, wishing to obtain fur-
     ther tokens from the same string, should pass a null pointer instead.
     The separator string, _s_e_p, must be supplied each time, and may change be-
     tween calls.

     The ssttrrttookk() function returns a pointer to the beginning of each subse-
     quent token in the string, after replacing the token itself with a NUL
     character.  When no more tokens remain, a null pointer is returned.

SSEEEE AALLSSOO
     index(3),  memchr(3),  rindex(3),  strchr(3),  strcspn(3),  strpbrk(3),
     strrchr(3),  strsep(3),  strspn(3),  strstr(3)

SSTTAANNDDAARRDDSS
     The ssttrrttookk() function conforms to ANSI C X3.159-1989 (``ANSI C '').

BBUUGGSS
     There is no way to get tokens from multiple strings simultaneously.

     The System V ssttrrttookk(), if handed a string containing only delimiter char-
     acters, will not alter the next starting point, so that a call to
     ssttrrttookk() with a different (or empty) delimiter string may return a non-
     NULL value.  Since this implementation always alters the next starting
     point, such a sequence of calls would always return NULL.

3rd Berkeley Distribution        June 4, 1993                                1