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
mbstate_bytes_so_far(const mbstate_t * ps)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
mbstate_set_byte(mbstate_t * ps,int i,char byte)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
mbstate_get_byte(const mbstate_t * ps,int n)44 __LIBC_HIDDEN__ uint8_t mbstate_get_byte(const mbstate_t* ps, int n) {
45 return ps->__seq[n];
46 }
47
reset_and_return_illegal(int _errno,mbstate_t * ps)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
reset_and_return(int _return,mbstate_t * ps)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