mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-21 20:40:05 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/* Copyright (C) 1991-2021 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>
|
|
#include <stdint.h>
|
|
#include <libc-pointer-arith.h>
|
|
|
|
#undef strcspn
|
|
|
|
#ifndef STRCSPN
|
|
# define STRCSPN strcspn
|
|
#endif
|
|
|
|
/* Return the length of the maximum initial segment of S
|
|
which contains no characters from REJECT. */
|
|
size_t
|
|
STRCSPN (const char *str, const char *reject)
|
|
{
|
|
if (__glibc_unlikely (reject[0] == '\0')
|
|
|| __glibc_unlikely (reject[1] == '\0'))
|
|
return __strchrnul (str, reject [0]) - str;
|
|
|
|
/* Use multiple small memsets to enable inlining on most targets. */
|
|
unsigned char table[256];
|
|
unsigned char *p = memset (table, 0, 64);
|
|
memset (p + 64, 0, 64);
|
|
memset (p + 128, 0, 64);
|
|
memset (p + 192, 0, 64);
|
|
|
|
unsigned char *s = (unsigned char*) reject;
|
|
unsigned char tmp;
|
|
do
|
|
p[tmp = *s++] = 1;
|
|
while (tmp);
|
|
|
|
s = (unsigned char*) str;
|
|
if (p[s[0]]) return 0;
|
|
if (p[s[1]]) return 1;
|
|
if (p[s[2]]) return 2;
|
|
if (p[s[3]]) return 3;
|
|
|
|
s = (unsigned char *) PTR_ALIGN_DOWN (s, 4);
|
|
|
|
unsigned int c0, c1, c2, c3;
|
|
do
|
|
{
|
|
s += 4;
|
|
c0 = p[s[0]];
|
|
c1 = p[s[1]];
|
|
c2 = p[s[2]];
|
|
c3 = p[s[3]];
|
|
}
|
|
while ((c0 | c1 | c2 | c3) == 0);
|
|
|
|
size_t count = s - (unsigned char *) str;
|
|
return (c0 | c1) != 0 ? count - c0 + 1 : count - c2 + 3;
|
|
}
|
|
libc_hidden_builtin_def (strcspn)
|