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/* Simple strcspn.
Copyright (C) 2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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 <string.h>
size_t strcspn (const char *str, const char *reject)
{
if (reject[0] == 0 || reject[1] == 0)
return __strchrnul (str, reject[0]) - str;
unsigned char table[256] = {0};
unsigned char *us;
for (us = (unsigned char*) reject; *us != 0; table[*us++] = 1);
table[*us] = 1;
for (us = (unsigned char*) str; table[*us] == 0; us++);
return us - (unsigned char *) str;
}
libc_hidden_builtin_def (strcspn)
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