userland/libc/string/strtok.c


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#include <string.h>

char *strtok_s;

char *strtok(char *restrict s, const char *restrict sep) {
  if (s) {
    strtok_s = s;
    return strtok(NULL, sep);
  }
	if(!strtok_s)
		return NULL;
  char *e = strpbrk(strtok_s, sep);
  if (!e) {
	  char *r = strtok_s;
	  strtok_s = NULL;
    return r;
  }
  *e = '\0';
  e--;
  for (; *sep; sep++)
    e++;
  e++;
  char *r = strtok_s;
  strtok_s = e;
  return r;
}