94 lines
3.9 KiB
C
94 lines
3.9 KiB
C
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/****************************************************************************
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* libc/stdio/lib_asprintf.c
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*
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* Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <sys/types.h>
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#include <wchar.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#ifdef CONFIG_LIBC_WCHAR
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name:
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*
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* Description:
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* The 'wcsrtombs' function converts a string of wide characters
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* indirectly pointed to by 'src' to a corresponding multibyte character
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* string stored in the array pointed to by 'dst'. No more than 'len'
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* bytes are written to'dst'.
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*
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* If 'dst' is NULL, no characters are stored.
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*
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* If 'dst' is not NULL, the pointer pointed to by 'src' is updated to
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* point to the character after the one that conversion stopped at. If
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* conversion stops because a null character is encountered, *'src' is set
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* to NULL.
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*
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* The mbstate_t argument, 'ps', is used to keep track of the shift state.
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* If it is NULL, 'wcsrtombs' uses an internal, static mbstate_t object,
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* which is initialized to the initial conversion state at program startup.
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*
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* The 'wcsnrtombs' function behaves identically to 'wcsrtombs', except
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* that conversion stops after reading at most 'nwc' characters from the
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* buffer pointed to by 'src'.
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*
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* Returned Value:
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* The 'wcsrtombs' and 'wcsnrtombs' functions return the number of bytes
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* stored in the array pointed to by 'dst' (not including any terminating
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* null), if successful, otherwise it returns (size_t)-1.
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*
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* Portability:
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* 'wcsrtombs' is defined by C99 standard.
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* 'wcsnrtombs' is defined by the POSIX.1-2008 standard.
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****************************************************************************/
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size_t wcsnrtombs(FAR char *dst, FAR const wchar_t **src, size_t nwc,
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size_t len, mbstate_t *ps)
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{
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return len;
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}
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#endif /* CONFIG_LIBC_WCHAR */
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