bionic_mbstate.h revision 7a7f9952c12b216fbf91fc4cdbb97045e8861115 
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#ifndef _BIONIC_MBSTATE_H
30#define _BIONIC_MBSTATE_H
31
32#include <wchar.h>
33
34__BEGIN_DECLS
35
36/*
37 * These return values are specified by POSIX for multibyte conversion
38 * functions.
39 */
40#define __MB_ERR_ILLEGAL_SEQUENCE static_cast<size_t>(-1)
41#define __MB_ERR_INCOMPLETE_SEQUENCE static_cast<size_t>(-2)
42
43#define __MB_IS_ERR(rv) (rv == __MB_ERR_ILLEGAL_SEQUENCE || \
44                         rv == __MB_ERR_INCOMPLETE_SEQUENCE)
45
46size_t mbstate_bytes_so_far(const mbstate_t* ps);
47void mbstate_set_byte(mbstate_t* ps, int i, char byte);
48uint8_t mbstate_get_byte(const mbstate_t* ps, int n);
49size_t reset_and_return_illegal(int _errno, mbstate_t* ps);
50size_t reset_and_return(int _return, mbstate_t* ps);
51
52__END_DECLS
53
54#endif // _BIONIC_MBSTATE_H
55