fdc0b608b5
According to https://pubs.opengroup.org/onlinepubs/9799919799/, the expected behavior for the wcstombs() function is that it should convert the wide-character codes stoping conversion either when a character sequence exceeds the limit of n total bytes or if a null byte is stored. In the first case, the null-terminated value should not be appended to the dst buffer. Currently, no null-terminator is appended to the dst buffer, even when it's expected to be appended, generating erroneous output.
53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/****************************************************************************
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* libs/libc/wchar/lib_wcsrtombs.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <wchar.h>
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: wcsrtombs
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*
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* Description:
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* Convert a wide-characterto a multibyte string string
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****************************************************************************/
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size_t wcsrtombs(FAR char *dst, FAR const wchar_t **src,
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size_t len, FAR mbstate_t *ps)
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{
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size_t ret;
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ret = wcsnrtombs(dst, src, SIZE_MAX, len, ps);
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if (dst != NULL && ret != (size_t)-1 && ret != len)
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{
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dst[ret] = '\0';
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}
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return ret;
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}
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