source: vendor/glibc/current/posix/regex.c

/* Extended regular expression matching and search library.
   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.

   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef _AIX
#pragma alloca
#else
# ifndef allocax           /* predefined by HP cc +Olibcalls */
#  ifdef __GNUC__
#   define alloca(size) __builtin_alloca (size)
#  else
#   if HAVE_ALLOCA_H
#    include <alloca.h>
#   else
#    ifdef __hpux
        void *alloca ();
#    else
#     if !defined __OS2__ && !defined WIN32
        char *alloca ();
#     else
#      include <malloc.h>       /* OS/2 defines alloca in here */
#     endif
#    endif
#   endif
#  endif
# endif
#endif

#ifdef _LIBC
/* We have to keep the namespace clean.  */
# define regfree(preg) __regfree (preg)
# define regexec(pr, st, nm, pm, ef) __regexec (pr, st, nm, pm, ef)
# define regcomp(preg, pattern, cflags) __regcomp (preg, pattern, cflags)
# define regerror(errcode, preg, errbuf, errbuf_size) \
        __regerror(errcode, preg, errbuf, errbuf_size)
# define re_set_registers(bu, re, nu, st, en) \
        __re_set_registers (bu, re, nu, st, en)
# define re_match_2(bufp, string1, size1, string2, size2, pos, regs, stop) \
        __re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop)
# define re_match(bufp, string, size, pos, regs) \
        __re_match (bufp, string, size, pos, regs)
# define re_search(bufp, string, size, startpos, range, regs) \
        __re_search (bufp, string, size, startpos, range, regs)
# define re_compile_pattern(pattern, length, bufp) \
        __re_compile_pattern (pattern, length, bufp)
# define re_set_syntax(syntax) __re_set_syntax (syntax)
# define re_search_2(bufp, st1, s1, st2, s2, startpos, range, regs, stop) \
        __re_search_2 (bufp, st1, s1, st2, s2, startpos, range, regs, stop)
# define re_compile_fastmap(bufp) __re_compile_fastmap (bufp)

# include "../locale/localeinfo.h"
#endif

/* POSIX says that <sys/types.h> must be included (by the caller) before
   <regex.h>.  */
#include <sys/types.h>

/* On some systems, limits.h sets RE_DUP_MAX to a lower value than
   GNU regex allows.  Include it before <regex.h>, which correctly
   #undefs RE_DUP_MAX and sets it to the right value.  */
#include <limits.h>

#include <regex.h>
#include "regex_internal.h"

#include "regex_internal.c"
#include "regcomp.c"
#include "regexec.c"

/* Binary backward compatibility.  */
#if _LIBC
# include <shlib-compat.h>
# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3)
link_warning (re_max_failures, "the 're_max_failures' variable is obsolete and will go away.")
int re_max_failures = 2000;
# endif
#endif