mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-21 04:31:04 +08:00
5a82c74822
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <string.h>
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#include <stdint.h>
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#include <libc-pointer-arith.h>
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#undef strspn
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#ifndef STRSPN
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# define STRSPN strspn
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#endif
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/* Return the length of the maximum initial segment
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of S which contains only characters in ACCEPT. */
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size_t
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STRSPN (const char *str, const char *accept)
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{
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if (accept[0] == '\0')
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return 0;
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if (__glibc_unlikely (accept[1] == '\0'))
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{
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const char *a = str;
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for (; *str == *accept; str++);
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return str - a;
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}
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/* Use multiple small memsets to enable inlining on most targets. */
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unsigned char table[256];
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unsigned char *p = memset (table, 0, 64);
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memset (p + 64, 0, 64);
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memset (p + 128, 0, 64);
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memset (p + 192, 0, 64);
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unsigned char *s = (unsigned char*) accept;
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/* Different from strcspn it does not add the NULL on the table
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so can avoid check if str[i] is NULL, since table['\0'] will
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be 0 and thus stopping the loop check. */
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do
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p[*s++] = 1;
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while (*s);
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s = (unsigned char*) str;
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if (!p[s[0]]) return 0;
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if (!p[s[1]]) return 1;
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if (!p[s[2]]) return 2;
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if (!p[s[3]]) return 3;
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s = (unsigned char *) PTR_ALIGN_DOWN (s, 4);
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unsigned int c0, c1, c2, c3;
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do {
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s += 4;
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c0 = p[s[0]];
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c1 = p[s[1]];
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c2 = p[s[2]];
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c3 = p[s[3]];
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} while ((c0 & c1 & c2 & c3) != 0);
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size_t count = s - (unsigned char *) str;
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return (c0 & c1) == 0 ? count + c0 : count + c2 + 2;
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}
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libc_hidden_builtin_def (strspn)
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