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[release] / src / liblimb / buffer.h / buffer_patrim_get.c 

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/* 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/buffer.h>
#include <limb/patrim.h>

int
buffer_patrim_get(buffer *b, u64 *id, u64 *u)
{
    struct iovec v[2];
    char buf[18];
    int r;

    do {
        buffer_rpeek(b, v);
        r = patrim_get(id, u, buf, siov_gather(buf, sizeof(buf), v, 2), 0);
    } while (r < 0 && (r = buffer_fill(b)) > 0);
    if (r <= 0) return (!r) ? (errno = EPIPE, 0) : 0;

    buffer_rseek(b, r);
    return 1;
}