mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 02:03:35 +08:00
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/* Copyright (C) 1995-2016 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <wchar.h>
|
|
#include <errno.h>
|
|
|
|
|
|
/* Parse WCS into tokens separated by characters in DELIM. If WCS is
|
|
NULL, the last string wcstok() was called with is used. */
|
|
wchar_t *
|
|
wcstok (wchar_t *wcs, const wchar_t *delim, wchar_t **save_ptr)
|
|
{
|
|
wchar_t *result;
|
|
|
|
if (wcs == NULL)
|
|
{
|
|
if (*save_ptr == NULL)
|
|
{
|
|
__set_errno (EINVAL);
|
|
return NULL;
|
|
}
|
|
else
|
|
wcs = *save_ptr;
|
|
}
|
|
|
|
/* Scan leading delimiters. */
|
|
wcs += wcsspn (wcs, delim);
|
|
if (*wcs == L'\0')
|
|
{
|
|
*save_ptr = NULL;
|
|
return NULL;
|
|
}
|
|
|
|
/* Find the end of the token. */
|
|
result = wcs;
|
|
wcs = wcspbrk (result, delim);
|
|
if (wcs == NULL)
|
|
/* This token finishes the string. */
|
|
*save_ptr = NULL;
|
|
else
|
|
{
|
|
/* Terminate the token and make *SAVE_PTR point past it. */
|
|
*wcs = L'\0';
|
|
*save_ptr = wcs + 1;
|
|
}
|
|
return result;
|
|
}
|