/* This file is part of limb                           https://lila.oss/limb
 * Copyright (C) 2023 Olivier Brunel                          jjk@jjacky.com */
/* SPDX-License-Identifier: GPL-2.0-only */
#include <errno.h>
#include <limb/direntry.h>

int
sa_scandirat(stralloc *sa, int bfd, const char *name, sa_scande fn, void *ctx)
{
    size_t salen = sa->len;
    int ret = 0;
    DIR *dir = opendirat(bfd, name);
    if (!dir) return -1;

    direntry *de;
    while ((errno = 0, de = readdir(dir))) {
        if (ISDOTDOT(de)) continue;

        int r = fn(sa, de, dirfd(dir), ctx);
        if (r < 0) break;
        if (r) ++ret;
    }
    if (errno) {
        ret = -1;
        sa->len = salen;
    }

    dir_close(dir);
    return ret;
}