lib/regex.c

   1 /* Extended regular expression matching and search library.
   2    Copyright (C) 2002-2003, 2005-2006, 2009-2012 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    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU Lesser General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    This program 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
  14    GNU Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public License along
  17    with this program; if not, write to the Free Software Foundation,
  18    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
  19
  20 #include <config.h>
  21
  22 /* Make sure noone compiles this code with a C++ compiler.  */
  23 #if defined __cplusplus && defined _LIBC
  24 # error "This is C code, use a C compiler"
  25 #endif
  26
  27 #ifdef _LIBC
  28 /* We have to keep the namespace clean.  */
  29 # define regfree(preg) __regfree (preg)
  30 # define regexec(pr, st, nm, pm, ef) __regexec (pr, st, nm, pm, ef)
  31 # define regcomp(preg, pattern, cflags) __regcomp (preg, pattern, cflags)
  32 # define regerror(errcode, preg, errbuf, errbuf_size) \
  33         __regerror(errcode, preg, errbuf, errbuf_size)
  34 # define re_set_registers(bu, re, nu, st, en) \
  35         __re_set_registers (bu, re, nu, st, en)
  36 # define re_match_2(bufp, string1, size1, string2, size2, pos, regs, stop) \
  37         __re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop)
  38 # define re_match(bufp, string, size, pos, regs) \
  39         __re_match (bufp, string, size, pos, regs)
  40 # define re_search(bufp, string, size, startpos, range, regs) \
  41         __re_search (bufp, string, size, startpos, range, regs)
  42 # define re_compile_pattern(pattern, length, bufp) \
  43         __re_compile_pattern (pattern, length, bufp)
  44 # define re_set_syntax(syntax) __re_set_syntax (syntax)
  45 # define re_search_2(bufp, st1, s1, st2, s2, startpos, range, regs, stop) \
  46         __re_search_2 (bufp, st1, s1, st2, s2, startpos, range, regs, stop)
  47 # define re_compile_fastmap(bufp) __re_compile_fastmap (bufp)
  48
  49 # include "../locale/localeinfo.h"
  50 #endif
  51
  52 /* On some systems, limits.h sets RE_DUP_MAX to a lower value than
  53    GNU regex allows.  Include it before <regex.h>, which correctly
  54    #undefs RE_DUP_MAX and sets it to the right value.  */
  55 #include <limits.h>
  56 #include <strings.h>
  57
  58 #include <regex.h>
  59 #include "regex_internal.h"
  60
  61 #include "regex_internal.c"
  62 #include "regcomp.c"
  63 #include "regexec.c"
  64
  65 /* Binary backward compatibility.  */
  66 #if _LIBC
  67 # include <shlib-compat.h>
  68 # if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3)
  69 link_warning (re_max_failures, "the 're_max_failures' variable is obsolete and will go away.")
  70 int re_max_failures = 2000;
  71 # endif
  72 #endif