1/*	$NetBSD: bufferlist.c,v 1.1.1.1 2009/12/13 16:54:11 kardel Exp $	*/
2
3/*
4 * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 1999-2001  Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/* Id: bufferlist.c,v 1.17 2007/06/19 23:47:17 tbox Exp */
21
22/*! \file */
23
24#include <config.h>
25
26#include <stddef.h>
27
28#include <isc/buffer.h>
29#include <isc/bufferlist.h>
30#include <isc/util.h>
31
32unsigned int
33isc_bufferlist_usedcount(isc_bufferlist_t *bl) {
34	isc_buffer_t *buffer;
35	unsigned int length;
36
37	REQUIRE(bl != NULL);
38
39	length = 0;
40	buffer = ISC_LIST_HEAD(*bl);
41	while (buffer != NULL) {
42		REQUIRE(ISC_BUFFER_VALID(buffer));
43		length += isc_buffer_usedlength(buffer);
44		buffer = ISC_LIST_NEXT(buffer, link);
45	}
46
47	return (length);
48}
49
50unsigned int
51isc_bufferlist_availablecount(isc_bufferlist_t *bl) {
52	isc_buffer_t *buffer;
53	unsigned int length;
54
55	REQUIRE(bl != NULL);
56
57	length = 0;
58	buffer = ISC_LIST_HEAD(*bl);
59	while (buffer != NULL) {
60		REQUIRE(ISC_BUFFER_VALID(buffer));
61		length += isc_buffer_availablelength(buffer);
62		buffer = ISC_LIST_NEXT(buffer, link);
63	}
64
65	return (length);
66}
67