mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/* Copyright (C) 1995-2020 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <wchar.h>
|
|
|
|
#ifdef WCSSPN
|
|
# define wcsspn WCSSPN
|
|
#endif
|
|
|
|
/* Return the length of the maximum initial segment
|
|
of WCS which contains only wide-characters in ACCEPT. */
|
|
size_t
|
|
wcsspn (const wchar_t *wcs, const wchar_t *accept)
|
|
{
|
|
const wchar_t *p;
|
|
const wchar_t *a;
|
|
size_t count = 0;
|
|
|
|
for (p = wcs; *p != L'\0'; ++p)
|
|
{
|
|
for (a = accept; *a != L'\0'; ++a)
|
|
if (*p == *a)
|
|
break;
|
|
if (*a == L'\0')
|
|
return count;
|
|
else
|
|
++count;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
libc_hidden_def (wcsspn)
|