localedata/collate-test.c

   1 /* Test collation function using real data.
   2    Copyright (C) 1997-2016 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
   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 <ctype.h>
  21 #include <error.h>
  22 #include <locale.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27
  28 struct lines
  29 {
  30   char *key;
  31   char *line;
  32 };
  33
  34 static int xstrcoll (const void *, const void *);
  35
  36 int
  37 main (int argc, char *argv[])
  38 {
  39   int result = 0;
  40   size_t nstrings, nstrings_max;
  41   struct lines *strings;
  42   char *line = NULL;
  43   size_t len = 0;
  44   size_t n;
  45
  46   if (argc < 2)
  47     error (1, 0, "usage: %s <random seed>", argv[0]);
  48
  49   setlocale (LC_ALL, "");
  50
  51   nstrings_max = 100;
  52   nstrings = 0;
  53   strings = (struct lines *) malloc (nstrings_max * sizeof (struct lines));
  54   if (strings == NULL)
  55     {
  56       perror (argv[0]);
  57       exit (1);
  58     }
  59
  60   while (1)
  61     {
  62       int l;
  63       if (getline (&line, &len, stdin) < 0)
  64         break;
  65
  66       if (nstrings == nstrings_max)
  67         {
  68           strings = (struct lines *) realloc (strings,
  69                                               (nstrings_max *= 2)
  70                                                * sizeof (*strings));
  71           if (strings == NULL)
  72             {
  73               perror (argv[0]);
  74               exit (1);
  75             }
  76         }
  77       strings[nstrings].line = strdup (line);
  78       l = strcspn (line, ":(;");
  79       while (l > 0 && isspace (line[l - 1]))
  80         --l;
  81       strings[nstrings].key = strndup (line, l);
  82       ++nstrings;
  83     }
  84   free (line);
  85
  86   /* First shuffle.  */
  87   srandom (atoi (argv[1]));
  88   for (n = 0; n < 10 * nstrings; ++n)
  89     {
  90       int r1, r2, r;
  91       size_t idx1 = random () % nstrings;
  92       size_t idx2 = random () % nstrings;
  93       struct lines tmp = strings[idx1];
  94       strings[idx1] = strings[idx2];
  95       strings[idx2] = tmp;
  96
  97       /* While we are at it a first little test.  */
  98       r1 = strcoll (strings[idx1].key, strings[idx2].key);
  99       r2 = strcoll (strings[idx2].key, strings[idx1].key);
 100       r = r1 * r2;
 101
 102       if (r > 0 || (r == 0 && r1 != 0) || (r == 0 && r2 != 0))
 103         printf ("`%s' and `%s' collate wrong: %d vs. %d\n",
 104                 strings[idx1].key, strings[idx2].key, r1, r2);
 105     }
 106
 107   /* Now sort.  */
 108   qsort (strings, nstrings, sizeof (struct lines), xstrcoll);
 109
 110   /* Print the result.  */
 111   for (n = 0; n < nstrings; ++n)
 112     {
 113       fputs (strings[n].line, stdout);
 114       free (strings[n].line);
 115       free (strings[n].key);
 116     }
 117   free (strings);
 118
 119   return result;
 120 }
 121
 122
 123 static int
 124 xstrcoll (const void *ptr1, const void *ptr2)
 125 {
 126   const struct lines *l1 = (const struct lines *) ptr1;
 127   const struct lines *l2 = (const struct lines *) ptr2;
 128
 129   return strcoll (l1->key, l2->key);
 130 }