posix/bug-regex13.c

   1 /* Regular expression tests.
   2    Copyright (C) 2002-2024 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 <sys/types.h>
  20 #include <mcheck.h>
  21 #include <regex.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25
  26 static struct
  27 {
  28   int syntax;
  29   const char *pattern;
  30   const char *string;
  31   int start;
  32 } tests[] = {
  33   {RE_BACKSLASH_ESCAPE_IN_LISTS, "[0\\-9]", "1", -1}, /* It should not match.  */
  34   {RE_BACKSLASH_ESCAPE_IN_LISTS, "[0\\-9]", "-", 0}, /* It should match.  */
  35   {RE_SYNTAX_POSIX_BASIC, "s1\n.*\ns3", "s1\ns2\ns3", 0},
  36   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}c", "ac", 0},
  37   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}c", "abc", -1},
  38   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}c", "abbc", -1},
  39   /* Nested duplication.  */
  40   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{1}c", "ac", -1},
  41   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{1}c", "abc", 0},
  42   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{1}c", "abbc", -1},
  43   {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "ac", -1},
  44   {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "abbc", -1},
  45   {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "abbbbc", 0},
  46   {RE_SYNTAX_POSIX_EXTENDED, "ab{2}{2}c", "abbbbbc", -1},
  47   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}{1}c", "ac", 0},
  48   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}{1}c", "abc", -1},
  49   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}{1}c", "abbc", -1},
  50   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{0}c", "ac", 0},
  51   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{0}c", "abc", -1},
  52   {RE_SYNTAX_POSIX_EXTENDED, "ab{1}{0}c", "abbc", -1},
  53   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}*c", "ac", 0},
  54   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}*c", "abc", -1},
  55   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}*c", "abbc", -1},
  56   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}?c", "ac", 0},
  57   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}?c", "abc", -1},
  58   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}?c", "abbc", -1},
  59   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}+c", "ac", 0},
  60   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}+c", "abc", -1},
  61   {RE_SYNTAX_POSIX_EXTENDED, "ab{0}+c", "abbc", -1},
  62 };
  63
  64 int
  65 main (void)
  66 {
  67   struct re_pattern_buffer regbuf;
  68   const char *err;
  69   size_t i;
  70   int ret = 0;
  71
  72   mtrace ();
  73
  74   for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
  75     {
  76       int start;
  77       re_set_syntax (tests[i].syntax);
  78       memset (&regbuf, '\0', sizeof (regbuf));
  79       err = re_compile_pattern (tests[i].pattern, strlen (tests[i].pattern),
  80                                 &regbuf);
  81       if (err != NULL)
  82         {
  83           printf ("re_compile_pattern failed: %s\n", err);
  84           ret = 1;
  85           continue;
  86         }
  87
  88       start = re_search (&regbuf, tests[i].string, strlen (tests[i].string),
  89                          0, strlen (tests[i].string), NULL);
  90       if (start != tests[i].start)
  91         {
  92           printf ("re_search failed %d\n", start);
  93           ret = 1;
  94           regfree (&regbuf);
  95           continue;
  96         }
  97       regfree (&regbuf);
  98     }
  99
 100   return ret;
 101 }