261 lines
11 KiB
Text
261 lines
11 KiB
Text
# serial 64
|
|
|
|
# Copyright (C) 1996-2001, 2003-2013 Free Software Foundation, Inc.
|
|
#
|
|
# This file is free software; the Free Software Foundation
|
|
# gives unlimited permission to copy and/or distribute it,
|
|
# with or without modifications, as long as this notice is preserved.
|
|
|
|
dnl Initially derived from code in GNU grep.
|
|
dnl Mostly written by Jim Meyering.
|
|
|
|
AC_PREREQ([2.50])
|
|
|
|
AC_DEFUN([gl_REGEX],
|
|
[
|
|
AC_ARG_WITH([included-regex],
|
|
[AS_HELP_STRING([--without-included-regex],
|
|
[don't compile regex; this is the default on systems
|
|
with recent-enough versions of the GNU C Library
|
|
(use with caution on other systems).])])
|
|
|
|
case $with_included_regex in #(
|
|
yes|no) ac_use_included_regex=$with_included_regex
|
|
;;
|
|
'')
|
|
# If the system regex support is good enough that it passes the
|
|
# following run test, then default to *not* using the included regex.c.
|
|
# If cross compiling, assume the test would fail and use the included
|
|
# regex.c.
|
|
AC_CHECK_DECLS_ONCE([alarm])
|
|
AC_CACHE_CHECK([for working re_compile_pattern],
|
|
[gl_cv_func_re_compile_pattern_working],
|
|
[AC_RUN_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[[#include <regex.h>
|
|
|
|
#include <locale.h>
|
|
#include <limits.h>
|
|
#include <string.h>
|
|
#if HAVE_DECL_ALARM
|
|
# include <unistd.h>
|
|
# include <signal.h>
|
|
#endif
|
|
]],
|
|
[[int result = 0;
|
|
static struct re_pattern_buffer regex;
|
|
unsigned char folded_chars[UCHAR_MAX + 1];
|
|
int i;
|
|
const char *s;
|
|
struct re_registers regs;
|
|
|
|
#if HAVE_DECL_ALARM
|
|
/* Some builds of glibc go into an infinite loop on this test. */
|
|
signal (SIGALRM, SIG_DFL);
|
|
alarm (2);
|
|
#endif
|
|
if (setlocale (LC_ALL, "en_US.UTF-8"))
|
|
{
|
|
{
|
|
/* http://sourceware.org/ml/libc-hacker/2006-09/msg00008.html
|
|
This test needs valgrind to catch the bug on Debian
|
|
GNU/Linux 3.1 x86, but it might catch the bug better
|
|
on other platforms and it shouldn't hurt to try the
|
|
test here. */
|
|
static char const pat[] = "insert into";
|
|
static char const data[] =
|
|
"\xFF\0\x12\xA2\xAA\xC4\xB1,K\x12\xC4\xB1*\xACK";
|
|
re_set_syntax (RE_SYNTAX_GREP | RE_HAT_LISTS_NOT_NEWLINE
|
|
| RE_ICASE);
|
|
memset (®ex, 0, sizeof regex);
|
|
s = re_compile_pattern (pat, sizeof pat - 1, ®ex);
|
|
if (s)
|
|
result |= 1;
|
|
else if (re_search (®ex, data, sizeof data - 1,
|
|
0, sizeof data - 1, ®s)
|
|
!= -1)
|
|
result |= 1;
|
|
}
|
|
|
|
{
|
|
/* This test is from glibc bug 15078.
|
|
The test case is from Andreas Schwab in
|
|
<http://www.sourceware.org/ml/libc-alpha/2013-01/msg00967.html>.
|
|
*/
|
|
static char const pat[] = "[^x]x";
|
|
static char const data[] =
|
|
"\xe1\x80\x80\xe1\x80\xbb\xe1\x80\xbd\xe1\x80\x94\xe1\x80"
|
|
"\xba\xe1\x80\xaf\xe1\x80\x95\xe1\x80\xbax";
|
|
re_set_syntax (0);
|
|
memset (®ex, 0, sizeof regex);
|
|
s = re_compile_pattern (pat, sizeof pat - 1, ®ex);
|
|
if (s)
|
|
result |= 1;
|
|
else if (re_search (®ex, data, sizeof data - 1,
|
|
0, sizeof data - 1, 0)
|
|
!= 21)
|
|
result |= 1;
|
|
}
|
|
|
|
if (! setlocale (LC_ALL, "C"))
|
|
return 1;
|
|
}
|
|
|
|
/* This test is from glibc bug 3957, reported by Andrew Mackey. */
|
|
re_set_syntax (RE_SYNTAX_EGREP | RE_HAT_LISTS_NOT_NEWLINE);
|
|
memset (®ex, 0, sizeof regex);
|
|
s = re_compile_pattern ("a[^x]b", 6, ®ex);
|
|
if (s)
|
|
result |= 2;
|
|
/* This should fail, but succeeds for glibc-2.5. */
|
|
else if (re_search (®ex, "a\nb", 3, 0, 3, ®s) != -1)
|
|
result |= 2;
|
|
|
|
/* This regular expression is from Spencer ere test number 75
|
|
in grep-2.3. */
|
|
re_set_syntax (RE_SYNTAX_POSIX_EGREP);
|
|
memset (®ex, 0, sizeof regex);
|
|
for (i = 0; i <= UCHAR_MAX; i++)
|
|
folded_chars[i] = i;
|
|
regex.translate = folded_chars;
|
|
s = re_compile_pattern ("a[[:@:>@:]]b\n", 11, ®ex);
|
|
/* This should fail with _Invalid character class name_ error. */
|
|
if (!s)
|
|
result |= 4;
|
|
|
|
/* Ensure that [b-a] is diagnosed as invalid, when
|
|
using RE_NO_EMPTY_RANGES. */
|
|
re_set_syntax (RE_SYNTAX_POSIX_EGREP | RE_NO_EMPTY_RANGES);
|
|
memset (®ex, 0, sizeof regex);
|
|
s = re_compile_pattern ("a[b-a]", 6, ®ex);
|
|
if (s == 0)
|
|
result |= 8;
|
|
|
|
/* This should succeed, but does not for glibc-2.1.3. */
|
|
memset (®ex, 0, sizeof regex);
|
|
s = re_compile_pattern ("{1", 2, ®ex);
|
|
if (s)
|
|
result |= 8;
|
|
|
|
/* The following example is derived from a problem report
|
|
against gawk from Jorge Stolfi <stolfi@ic.unicamp.br>. */
|
|
memset (®ex, 0, sizeof regex);
|
|
s = re_compile_pattern ("[an\371]*n", 7, ®ex);
|
|
if (s)
|
|
result |= 8;
|
|
/* This should match, but does not for glibc-2.2.1. */
|
|
else if (re_match (®ex, "an", 2, 0, ®s) != 2)
|
|
result |= 8;
|
|
|
|
memset (®ex, 0, sizeof regex);
|
|
s = re_compile_pattern ("x", 1, ®ex);
|
|
if (s)
|
|
result |= 8;
|
|
/* glibc-2.2.93 does not work with a negative RANGE argument. */
|
|
else if (re_search (®ex, "wxy", 3, 2, -2, ®s) != 1)
|
|
result |= 8;
|
|
|
|
/* The version of regex.c in older versions of gnulib
|
|
ignored RE_ICASE. Detect that problem too. */
|
|
re_set_syntax (RE_SYNTAX_EMACS | RE_ICASE);
|
|
memset (®ex, 0, sizeof regex);
|
|
s = re_compile_pattern ("x", 1, ®ex);
|
|
if (s)
|
|
result |= 16;
|
|
else if (re_search (®ex, "WXY", 3, 0, 3, ®s) < 0)
|
|
result |= 16;
|
|
|
|
/* Catch a bug reported by Vin Shelton in
|
|
http://lists.gnu.org/archive/html/bug-coreutils/2007-06/msg00089.html
|
|
*/
|
|
re_set_syntax (RE_SYNTAX_POSIX_BASIC
|
|
& ~RE_CONTEXT_INVALID_DUP
|
|
& ~RE_NO_EMPTY_RANGES);
|
|
memset (®ex, 0, sizeof regex);
|
|
s = re_compile_pattern ("[[:alnum:]_-]\\\\+$", 16, ®ex);
|
|
if (s)
|
|
result |= 32;
|
|
|
|
/* REG_STARTEND was added to glibc on 2004-01-15.
|
|
Reject older versions. */
|
|
if (! REG_STARTEND)
|
|
result |= 64;
|
|
|
|
#if 0
|
|
/* It would be nice to reject hosts whose regoff_t values are too
|
|
narrow (including glibc on hosts with 64-bit ptrdiff_t and
|
|
32-bit int), but we should wait until glibc implements this
|
|
feature. Otherwise, support for equivalence classes and
|
|
multibyte collation symbols would always be broken except
|
|
when compiling --without-included-regex. */
|
|
if (sizeof (regoff_t) < sizeof (ptrdiff_t)
|
|
|| sizeof (regoff_t) < sizeof (ssize_t))
|
|
result |= 64;
|
|
#endif
|
|
|
|
return result;
|
|
]])],
|
|
[gl_cv_func_re_compile_pattern_working=yes],
|
|
[gl_cv_func_re_compile_pattern_working=no],
|
|
dnl When crosscompiling, assume it is not working.
|
|
[gl_cv_func_re_compile_pattern_working=no])])
|
|
case $gl_cv_func_re_compile_pattern_working in #(
|
|
yes) ac_use_included_regex=no;; #(
|
|
no) ac_use_included_regex=yes;;
|
|
esac
|
|
;;
|
|
*) AC_MSG_ERROR([Invalid value for --with-included-regex: $with_included_regex])
|
|
;;
|
|
esac
|
|
|
|
if test $ac_use_included_regex = yes; then
|
|
AC_DEFINE([_REGEX_INCLUDE_LIMITS_H], [1],
|
|
[Define if you want <regex.h> to include <limits.h>, so that it
|
|
consistently overrides <limits.h>'s RE_DUP_MAX.])
|
|
AC_DEFINE([_REGEX_LARGE_OFFSETS], [1],
|
|
[Define if you want regoff_t to be at least as wide POSIX requires.])
|
|
AC_DEFINE([re_syntax_options], [rpl_re_syntax_options],
|
|
[Define to rpl_re_syntax_options if the replacement should be used.])
|
|
AC_DEFINE([re_set_syntax], [rpl_re_set_syntax],
|
|
[Define to rpl_re_set_syntax if the replacement should be used.])
|
|
AC_DEFINE([re_compile_pattern], [rpl_re_compile_pattern],
|
|
[Define to rpl_re_compile_pattern if the replacement should be used.])
|
|
AC_DEFINE([re_compile_fastmap], [rpl_re_compile_fastmap],
|
|
[Define to rpl_re_compile_fastmap if the replacement should be used.])
|
|
AC_DEFINE([re_search], [rpl_re_search],
|
|
[Define to rpl_re_search if the replacement should be used.])
|
|
AC_DEFINE([re_search_2], [rpl_re_search_2],
|
|
[Define to rpl_re_search_2 if the replacement should be used.])
|
|
AC_DEFINE([re_match], [rpl_re_match],
|
|
[Define to rpl_re_match if the replacement should be used.])
|
|
AC_DEFINE([re_match_2], [rpl_re_match_2],
|
|
[Define to rpl_re_match_2 if the replacement should be used.])
|
|
AC_DEFINE([re_set_registers], [rpl_re_set_registers],
|
|
[Define to rpl_re_set_registers if the replacement should be used.])
|
|
AC_DEFINE([re_comp], [rpl_re_comp],
|
|
[Define to rpl_re_comp if the replacement should be used.])
|
|
AC_DEFINE([re_exec], [rpl_re_exec],
|
|
[Define to rpl_re_exec if the replacement should be used.])
|
|
AC_DEFINE([regcomp], [rpl_regcomp],
|
|
[Define to rpl_regcomp if the replacement should be used.])
|
|
AC_DEFINE([regexec], [rpl_regexec],
|
|
[Define to rpl_regexec if the replacement should be used.])
|
|
AC_DEFINE([regerror], [rpl_regerror],
|
|
[Define to rpl_regerror if the replacement should be used.])
|
|
AC_DEFINE([regfree], [rpl_regfree],
|
|
[Define to rpl_regfree if the replacement should be used.])
|
|
fi
|
|
])
|
|
|
|
# Prerequisites of lib/regex.c and lib/regex_internal.c.
|
|
AC_DEFUN([gl_PREREQ_REGEX],
|
|
[
|
|
AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
|
|
AC_REQUIRE([AC_C_INLINE])
|
|
AC_REQUIRE([AC_C_RESTRICT])
|
|
AC_REQUIRE([AC_TYPE_MBSTATE_T])
|
|
AC_REQUIRE([gl_EEMALLOC])
|
|
AC_CHECK_HEADERS([libintl.h])
|
|
AC_CHECK_FUNCS_ONCE([isblank iswctype wcscoll])
|
|
AC_CHECK_DECLS([isblank], [], [], [[#include <ctype.h>]])
|
|
])
|