platform_bionic/libc/bionic/mbstate.cpp
Dan Albert 7a7f9952c1 Adds functionality specified by uchar.h
mbrtoc32 and c32rtomb get their implementations from mbrtowc and wcrtomb. The
wc functions now simply call the c32 functions.

Bug: 14646575
Change-Id: I49d4b95fed0f9d790260c996c4d0f8bfd1686324
2014-06-04 08:39:24 -07:00

57 lines
2.1 KiB
C++

/*
* Copyright (C) 2014 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "private/bionic_mbstate.h"
#include <errno.h>
__LIBC_HIDDEN__ size_t mbstate_bytes_so_far(const mbstate_t* ps) {
return
(ps->__seq[2] != 0) ? 3 :
(ps->__seq[1] != 0) ? 2 :
(ps->__seq[0] != 0) ? 1 : 0;
}
__LIBC_HIDDEN__ void mbstate_set_byte(mbstate_t* ps, int i, char byte) {
ps->__seq[i] = static_cast<uint8_t>(byte);
}
__LIBC_HIDDEN__ uint8_t mbstate_get_byte(const mbstate_t* ps, int n) {
return ps->__seq[n];
}
__LIBC_HIDDEN__ size_t reset_and_return_illegal(int _errno, mbstate_t* ps) {
errno = _errno;
*(reinterpret_cast<uint32_t*>(ps->__seq)) = 0;
return __MB_ERR_ILLEGAL_SEQUENCE;
}
__LIBC_HIDDEN__ size_t reset_and_return(int _return, mbstate_t* ps) {
*(reinterpret_cast<uint32_t*>(ps->__seq)) = 0;
return _return;
}