Function csv_leaf_num

tools/libxo/encoder/csv/enc_csv.c:492–549

* Return the index of a given leaf in the c_leaf[] array, where we * record leaf values. If the leaf is new and we haven't stopped recording * leafs, then make a new slot for it and record the name. */

 * leafs, then make a new slot for it and record the name.
 */
static int
csv_leaf_num (xo_handle_t *xop UNUSED, csv_private_t *csv,
	       const char *name, xo_xff_flags_t flags)
{
    ssize_t fnum;
    leaf_t *lp;
    xo_buffer_t *xbp = &csv->c_name_buf;

    for (fnum = 0; fnum < csv->c_leaf_depth; fnum++) {
	lp = &csv->c_leaf[fnum];

	const char *fname = xo_buf_data(xbp, lp->f_name);
	if (xo_streq(fname, name))
	    return fnum;
    }

    /* If we're done with adding new leafs, then bail */
    if (csv->c_flags & CF_LEAFS_DONE)
	return -1;

    /* This leaf does not exist yet, so we need to create it */
    /* Start by checking if there's enough room */
    if (csv->c_leaf_depth + 1 >= csv->c_leaf_max) {
	/* Out of room; realloc it */
	ssize_t new_max = csv->c_leaf_max * 2;
	if (new_max == 0)
	    new_max = C_LEAF_MAX;

	lp = xo_realloc(csv->c_leaf, new_max * sizeof(*lp));
	if (lp == NULL)
	    return -1;			/* No luck; bail */

	/* Zero out the new portion */
	bzero(&lp[csv->c_leaf_max], csv->c_leaf_max * sizeof(*lp));

	/* Update csv data */
	csv->c_leaf = lp;
	csv->c_leaf_max = new_max;
    }

    lp = &csv->c_leaf[csv->c_leaf_depth++];
#ifdef CSV_STACK_IS_NEEDED
    lp->f_depth = csv->c_stack_depth;
#endif /* CSV_STACK_IS_NEEDED */

    lp->f_name = xo_buf_offset(xbp);

    char *cp = xo_buf_cur(xbp);
    xo_buf_append(xbp, name, strlen(name) + 1);

    if (flags & XFF_KEY)
	lp->f_flags |= LF_KEY;

    csv_dbg(xop, csv, "csv: leaf: name: %zd [%s] [%s] %x\n",
	    fnum, name, cp, lp->f_flags);

    return fnum;
}