posix/bug-regex6.c

   1 /* Test for regexec.
   2    Copyright (C) 2002-2023 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 <locale.h>
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include <sys/types.h>
  23 #include <regex.h>
  24
  25
  26 int
  27 main (int argc, char *argv[])
  28 {
  29   regex_t re;
  30   regmatch_t mat[10];
  31   int i, j, ret = 0;
  32   const char *locales[] = { "C", "C.UTF-8", "de_DE.UTF-8" };
  33   const char *string = "http://www.regex.com/pattern/matching.html#intro";
  34   regmatch_t expect[10] = {
  35     { 0, 48 }, { 0, 5 }, { 0, 4 }, { 5, 20 }, { 7, 20 }, { 20, 42 },
  36     { -1, -1 }, { -1, -1 }, { 42, 48 }, { 43, 48 } };
  37
  38   for (i = 0; i < sizeof (locales) / sizeof (locales[0]); ++i)
  39     {
  40       if (setlocale (LC_ALL, locales[i]) == NULL)
  41         {
  42           puts ("cannot set locale");
  43           ret = 1;
  44         }
  45       else if (regcomp (&re,
  46                         "^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\\?([^#]*))?(#(.*))?",
  47                         REG_EXTENDED) != REG_NOERROR)
  48         {
  49           puts ("cannot compile the regular expression");
  50           ret = 1;
  51         }
  52       else if (regexec (&re, string, 10, mat, 0) == REG_NOMATCH)
  53         {
  54           puts ("no match");
  55           ret = 1;
  56         }
  57       else
  58         {
  59           if (! memcmp (mat, expect, sizeof (mat)))
  60             printf ("matching ok for %s locale\n", locales[i]);
  61           else
  62             {
  63               printf ("matching failed for %s locale:\n", locales[i]);
  64               ret = 1;
  65               for (j = 0; j < 9; ++j)
  66                 if (mat[j].rm_so != -1)
  67                   printf ("%d: %.*s\n", j, mat[j].rm_eo - mat[j].rm_so,
  68                           string + mat[j].rm_so);
  69             }
  70         }
  71     }
  72
  73   return ret;
  74 }