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
