1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *  * Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 *  * Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in
12 *    the documentation and/or other materials provided with the
13 *    distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include "private/bionic_mbstate.h"
30
31#include <errno.h>
32
33__LIBC_HIDDEN__ size_t mbstate_bytes_so_far(const mbstate_t* ps) {
34  return
35    (ps->__seq[2] != 0) ? 3 :
36    (ps->__seq[1] != 0) ? 2 :
37    (ps->__seq[0] != 0) ? 1 : 0;
38}
39
40__LIBC_HIDDEN__ void mbstate_set_byte(mbstate_t* ps, int i, char byte) {
41  ps->__seq[i] = static_cast<uint8_t>(byte);
42}
43
44__LIBC_HIDDEN__ uint8_t mbstate_get_byte(const mbstate_t* ps, int n) {
45  return ps->__seq[n];
46}
47
48__LIBC_HIDDEN__ size_t reset_and_return_illegal(int _errno, mbstate_t* ps) {
49  errno = _errno;
50  *(reinterpret_cast<uint32_t*>(ps->__seq)) = 0;
51  return __MB_ERR_ILLEGAL_SEQUENCE;
52}
53
54__LIBC_HIDDEN__ size_t reset_and_return(int _return, mbstate_t* ps) {
55  *(reinterpret_cast<uint32_t*>(ps->__seq)) = 0;
56  return _return;
57}
58