posix/bug-regex6.c

   1 /* Test for regexec.
   2    Copyright (C) 2002-2020 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
   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    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <locale.h>
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <sys/types.h>
  24 #include <regex.h>
  25
  26
  27 int
  28 main (int argc, char *argv[])
  29 {
  30   regex_t re;
  31   regmatch_t mat[10];
  32   int i, j, ret = 0;
  33   const char *locales[] = { "C", "de_DE.UTF-8" };
  34   const char *string = "http://www.regex.com/pattern/matching.html#intro";
  35   regmatch_t expect[10] = {
  36     { 0, 48 }, { 0, 5 }, { 0, 4 }, { 5, 20 }, { 7, 20 }, { 20, 42 },
  37     { -1, -1 }, { -1, -1 }, { 42, 48 }, { 43, 48 } };
  38
  39   for (i = 0; i < sizeof (locales) / sizeof (locales[0]); ++i)
  40     {
  41       if (setlocale (LC_ALL, locales[i]) == NULL)
  42         {
  43           puts ("cannot set locale");
  44           ret = 1;
  45         }
  46       else if (regcomp (&re,
  47                         "^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\\?([^#]*))?(#(.*))?",
  48                         REG_EXTENDED) != REG_NOERROR)
  49         {
  50           puts ("cannot compile the regular expression");
  51           ret = 1;
  52         }
  53       else if (regexec (&re, string, 10, mat, 0) == REG_NOMATCH)
  54         {
  55           puts ("no match");
  56           ret = 1;
  57         }
  58       else
  59         {
  60           if (! memcmp (mat, expect, sizeof (mat)))
  61             printf ("matching ok for %s locale\n", locales[i]);
  62           else
  63             {
  64               printf ("matching failed for %s locale:\n", locales[i]);
  65               ret = 1;
  66               for (j = 0; j < 9; ++j)
  67                 if (mat[j].rm_so != -1)
  68                   printf ("%d: %.*s\n", j, mat[j].rm_eo - mat[j].rm_so,
  69                           string + mat[j].rm_so);
  70             }
  71         }
  72     }
  73
  74   return ret;
  75 }