81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
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/****************************************************************************
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* libs/libc/wchar/lib_wcstok.c
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*
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* Copyright © 2005-2014 Rich Felker, et al.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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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: wcstok
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*
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* Description:
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* Split wide string into tokens
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*
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* Input Parameters:
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* s - the source wide string to truncate
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* sep - the wide string containing the separator wide characters
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* p - the pointer of which using to store of the current tokenization
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* sequence
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*
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* Returned Value:
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* Return a pointer to the last token found in the wide string;
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* Return null pointer if there are no tokens left to retrieve
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*
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****************************************************************************/
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FAR wchar_t *wcstok(FAR wchar_t *s, FAR const wchar_t *sep, FAR wchar_t **p)
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{
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if (!s && !(s = *p))
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{
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return NULL;
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}
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s += wcsspn(s, sep);
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if (!*s)
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{
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return *p = NULL;
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}
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*p = s + wcscspn(s, sep);
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if (**p)
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{
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*(*p)++ = 0;
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}
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else
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{
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*p = NULL;
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}
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return s;
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}
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