posix/bug-regex28.c

   1 /* Test RE_HAT_LISTS_NOT_NEWLINE and RE_DOT_NEWLINE.
   2    Copyright (C) 2007-2016 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Jakub Jelinek <jakub@redhat.com>, 2007.
   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, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <regex.h>
  21 #include <stdio.h>
  22 #include <string.h>
  23
  24 struct tests
  25 {
  26   const char *regex;
  27   const char *string;
  28   reg_syntax_t syntax;
  29   int retval;
  30 } tests[] = {
  31 #define EGREP RE_SYNTAX_EGREP
  32 #define EGREP_NL (RE_SYNTAX_EGREP | RE_DOT_NEWLINE) & ~RE_HAT_LISTS_NOT_NEWLINE
  33   { "a.b", "a\nb", EGREP, -1 },
  34   { "a.b", "a\nb", EGREP_NL, 0 },
  35   { "a[^x]b", "a\nb", EGREP, -1 },
  36   { "a[^x]b", "a\nb", EGREP_NL, 0 },
  37   /* While \S and \W are internally handled as [^[:space:]] and [^[:alnum:]_],
  38      RE_HAT_LISTS_NOT_NEWLINE did not make any difference, so ensure
  39      it doesn't change.  */
  40   { "a\\Sb", "a\nb", EGREP, -1 },
  41   { "a\\Sb", "a\nb", EGREP_NL, -1 },
  42   { "a\\Wb", "a\nb", EGREP, 0 },
  43   { "a\\Wb", "a\nb", EGREP_NL, 0 }
  44 };
  45
  46 int
  47 main (void)
  48 {
  49   struct re_pattern_buffer r;
  50   size_t i;
  51   int ret = 0;
  52
  53   for (i = 0; i < sizeof (tests) / sizeof (tests[i]); ++i)
  54     {
  55       re_set_syntax (tests[i].syntax);
  56       memset (&r, 0, sizeof (r));
  57       if (re_compile_pattern (tests[i].regex, strlen (tests[i].regex), &r))
  58         {
  59           printf ("re_compile_pattern %zd failed\n", i);
  60           ret = 1;
  61           continue;
  62         }
  63       size_t len = strlen (tests[i].string);
  64       int rv = re_search (&r, tests[i].string, len, 0, len, NULL);
  65       if (rv != tests[i].retval)
  66         {
  67           printf ("re_search %zd unexpected value %d != %d\n",
  68                   i, rv, tests[i].retval);
  69           ret = 1;
  70         }
  71       regfree (&r);
  72     }
  73   return ret;
  74 }