#include <stdlib.h>
#include <string.h>

int
bt_skip_func(const __uint32_t len_limit, const __uint8_t *cur,
	     int delta, __uint32_t len) {

  const __uint8_t *pb = cur - delta;
  const __uint8_t *orig_pb = pb;
  const __uint8_t *last_pb = pb + len_limit;

  pb += len;
  cur += len + 1;

  while (++pb != last_pb) {
    if (*pb != *cur)
      break;
    cur++;			/* 2nd iteration */
    if (++pb == last_pb)
      break;
    if (*pb != *cur)
      break;
    cur++;			/* 3rd iteration */
    if (++pb == last_pb)
      break;
    if (*pb != *cur)
      break;
    cur++;			/* 4th iteration */
    if (++pb == last_pb)
      break;
    if (*pb != *cur)
      break;
    cur++;			/* 4th iteration */
  }
  return pb - orig_pb;
}

int main (int argc, char *argv[]) {

  char *text_input = "ttttttttttttttttthis is some text that should be longer";
  int len_limit = strlen (text_input);
  int pos = 0;

  int cur_match = 0;
  int depth = 0;

  int result = bt_skip_func(len_limit, text_input + 3, 3, 1);
}