regex.c revision 146040 
1/* Extended regular expression matching and search library.
2   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4   Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
5
6   The GNU C Library is free software; you can redistribute it and/or
7   modify it under the terms of the GNU Lesser General Public
8   License as published by the Free Software Foundation; either
9   version 2.1 of the License, or (at your option) any later version.
10
11   The GNU C Library is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14   Lesser General Public License for more details.
15
16   You should have received a copy of the GNU Lesser General Public
17   License along with the GNU C Library; if not, write to the Free
18   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19   02111-1307 USA.  */
20
21#ifdef HAVE_CONFIG_H
22#include "config.h"
23#endif
24
25#ifdef _AIX
26#pragma alloca
27#else
28# ifndef allocax           /* predefined by HP cc +Olibcalls */
29#  ifdef __GNUC__
30#   define alloca(size) __builtin_alloca (size)
31#  else
32#   if HAVE_ALLOCA_H
33#    include <alloca.h>
34#   else
35#    ifdef __hpux
36        void *alloca ();
37#    else
38#     if !defined __OS2__ && !defined WIN32
39        char *alloca ();
40#     else
41#      include <malloc.h>       /* OS/2 defines alloca in here */
42#     endif
43#    endif
44#   endif
45#  endif
46# endif
47#endif
48
49#ifdef _LIBC
50/* We have to keep the namespace clean.  */
51# define regfree(preg) __regfree (preg)
52# define regexec(pr, st, nm, pm, ef) __regexec (pr, st, nm, pm, ef)
53# define regcomp(preg, pattern, cflags) __regcomp (preg, pattern, cflags)
54# define regerror(errcode, preg, errbuf, errbuf_size) \
55	__regerror(errcode, preg, errbuf, errbuf_size)
56# define re_set_registers(bu, re, nu, st, en) \
57	__re_set_registers (bu, re, nu, st, en)
58# define re_match_2(bufp, string1, size1, string2, size2, pos, regs, stop) \
59	__re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop)
60# define re_match(bufp, string, size, pos, regs) \
61	__re_match (bufp, string, size, pos, regs)
62# define re_search(bufp, string, size, startpos, range, regs) \
63	__re_search (bufp, string, size, startpos, range, regs)
64# define re_compile_pattern(pattern, length, bufp) \
65	__re_compile_pattern (pattern, length, bufp)
66# define re_set_syntax(syntax) __re_set_syntax (syntax)
67# define re_search_2(bufp, st1, s1, st2, s2, startpos, range, regs, stop) \
68	__re_search_2 (bufp, st1, s1, st2, s2, startpos, range, regs, stop)
69# define re_compile_fastmap(bufp) __re_compile_fastmap (bufp)
70
71# include "../locale/localeinfo.h"
72#endif
73
74/* POSIX says that <sys/types.h> must be included (by the caller) before
75   <regex.h>.  */
76#include <sys/types.h>
77
78/* On some systems, limits.h sets RE_DUP_MAX to a lower value than
79   GNU regex allows.  Include it before <regex.h>, which correctly
80   #undefs RE_DUP_MAX and sets it to the right value.  */
81#include <limits.h>
82
83#include <regex.h>
84#include "regex_internal.h"
85
86#include "regex_internal.c"
87#include "regcomp.c"
88#include "regexec.c"
89
90/* Binary backward compatibility.  */
91#if _LIBC
92# include <shlib-compat.h>
93# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3)
94link_warning (re_max_failures, "the 're_max_failures' variable is obsolete and will go away.")
95int re_max_failures = 2000;
96# endif
97#endif
98