glibc/stdlib/rpmatch.c
Ulrich Drepper 4aebaa6bd9 Update.
* argp/argp-help.c: Unify use of function aliases to make more compact
	PLT.
	* include/libintl.h: Likewise.
	* inet/rcmd.c: Likewise.
	* intl/dcigettext.c: Likewise.
	* libio/iofputws.c: Likewise.
	* libio/iofputws_u.c: Likewise.
	* libio/iogetwline.c: Likewise.
	* libio/swprintf.c: Likewise.
	* malloc/malloc.c: Likewise.
	* nss/digits_dots.c: Likewise.
	* posix/fnmatch.c: Likewise.
	* posix/spawn_faction_addclose.c: Likewise.
	* posix/spawn_faction_adddup2.c: Likewise.
	* posix/spawn_faction_addopen.c: Likewise.
	* posix/spawni.c: Likewise.
	* posix/wordexp.c: Likewise.
	* posix/spawni.c: Likewise.
	* resolv/res_hconf.c: Likewise.
	* resolv/res_init.c: Likewise.
	* shadow/lckpwdf.c: Likewise.
	* signal/sighold.c: Likewise.
	* signal/sigrelse.c: Likewise.
	* stdio-common/printf-parse.h: Likewise.
	* stdio-common/printf-prs.c: Likewise.
	* stdio-common/printf_fp.c: Likewise.
	* stdio-common/vfprintf.c: Likewise.
	* stdio-common/vfscanf.c: Likewise.
	* stdlib/rpmatch.c: Likewise.
	* sunrpc/create_xid.c: Likewise.
	* sunrpc/key_call.c: Likewise.
	* sysdeps/generic/setrlimit64.c: Likewise.
	* sysdeps/generic/utmp_file.c: Likewise.
	* sysdeps/generic/vlimit.c: Likewise.
	* sysdeps/posix/posix_fallocate.c: Likewise.
	* sysdeps/posix/posix_fallocate64.c: Likewise.
	* sysdeps/posix/sigpause.c: Likewise.
	* sysdeps/posix/sigset.c: Likewise.
	* sysdeps/unix/grantpt.c: Likewise.
	* sysdeps/unix/bsd/ualarm.c: Likewise.
	* sysdeps/unix/sysv/linux/dl-origin.c: Likewise.
	* sysdeps/unix/sysv/linux/getloadavg.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname.c: Likewise.
	* sysdeps/unix/sysv/linux/ulimit.c: Likewise.
	* time/strftime.c: Likewise.
	* wcsmbs/wcscoll.c: Likewise.
	* wcsmbs/wcsxfrm.c: Likewise.

	* sysdeps/powerpc/fpu_control.h (_FPU_GETCW): Allow gcc to generate
	postinc/predec instruction.
2000-08-21 04:18:25 +00:00

62 lines
2.0 KiB
C

/* Determine whether string value is affirmation or negative response
according to current locale's data.
This file is part of the GNU C Library.
Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <langinfo.h>
#include <stdlib.h>
#include <regex.h>
int
rpmatch (response)
const char *response;
{
/* Match against one of the response patterns, compiling the pattern
first if necessary. */
inline int try (const int tag, const int match, const int nomatch,
const char **lastp, regex_t *re)
{
const char *pattern = nl_langinfo (tag);
if (pattern != *lastp)
{
/* The pattern has changed. */
if (*lastp)
{
/* Free the old compiled pattern. */
__regfree (re);
*lastp = NULL;
}
/* Compile the pattern and cache it for future runs. */
if (__regcomp (re, pattern, REG_EXTENDED) != 0)
return -1;
*lastp = pattern;
}
/* Try the pattern. */
return __regexec (re, response, 0, NULL, 0) == 0 ? match : nomatch;
}
/* We cache the response patterns and compiled regexps here. */
static const char *yesexpr, *noexpr;
static regex_t yesre, nore;
return (try (YESEXPR, 1, 0, &yesexpr, &yesre) ?:
try (NOEXPR, 0, -1, &noexpr, &nore));
}