posix/bug-regex28.c

   1 /* Test RE_HAT_LISTS_NOT_NEWLINE and RE_DOT_NEWLINE.
   2    Copyright (C) 2007-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <regex.h>
  20 #include <stdio.h>
  21 #include <string.h>
  22
  23 #include <support/test-driver.h>
  24 #include <support/check.h>
  25
  26 struct tests
  27 {
  28   const char *regex;
  29   const char *string;
  30   reg_syntax_t syntax;
  31   int retval;
  32 };
  33 static const struct tests tests[] = {
  34 #define EGREP RE_SYNTAX_EGREP
  35 #define EGREP_NL (RE_SYNTAX_EGREP | RE_DOT_NEWLINE) & ~RE_HAT_LISTS_NOT_NEWLINE
  36   { "a.b", "a\nb", EGREP, 0 },
  37   { "a.b", "a\nb", EGREP_NL, 0 },
  38   { "a[^x]b", "a\nb", EGREP, 0 },
  39   { "a[^x]b", "a\nb", EGREP_NL, 0 },
  40   /* While \S and \W are internally handled as [^[:space:]] and [^[:alnum:]_],
  41      RE_HAT_LISTS_NOT_NEWLINE did not make any difference, so ensure
  42      it doesn't change.  */
  43   { "a\\Sb", "a\nb", EGREP, -1 },
  44   { "a\\Sb", "a\nb", EGREP_NL, -1 },
  45   { "a\\Wb", "a\nb", EGREP, 0 },
  46   { "a\\Wb", "a\nb", EGREP_NL, 0 }
  47 };
  48 static const size_t tests_size = sizeof (tests) / sizeof (tests[0]);
  49
  50 static int
  51 do_test (void)
  52 {
  53   struct re_pattern_buffer r;
  54
  55   for (size_t i = 0; i < tests_size; i++)
  56     {
  57       re_set_syntax (tests[i].syntax);
  58       memset (&r, 0, sizeof (r));
  59       const char *re = re_compile_pattern (tests[i].regex,
  60                                            strlen (tests[i].regex), &r);
  61       TEST_VERIFY (re == NULL);
  62       if (re != NULL)
  63         continue;
  64
  65       size_t len = strlen (tests[i].string);
  66       int rv = re_search (&r, tests[i].string, len, 0, len, NULL);
  67       TEST_VERIFY (rv == tests[i].retval);
  68       if (test_verbose > 0)
  69         printf ("info: i=%zu rv=%d expected=%d\n", i, rv, tests[i].retval);
  70
  71       regfree (&r);
  72     }
  73
  74   return 0;
  75 }
  76
  77 #include <support/test-driver.c>