localedata/xfrm-test.c

   1 /* Test collation function via transformation using real data.
   2    Copyright (C) 1997-2017 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 #include <stdbool.h>
  27
  28 /* Keep in sync with string/strxfrm_l.c.  */
  29 #define SMALL_STR_SIZE 4095
  30
  31 struct lines
  32 {
  33   char *xfrm;
  34   char *line;
  35 };
  36
  37 static int xstrcmp (const void *, const void *);
  38
  39 int
  40 main (int argc, char *argv[])
  41 {
  42   int result = 0;
  43   bool nocache = false;
  44   size_t nstrings, nstrings_max;
  45   struct lines *strings;
  46   char *line = NULL;
  47   size_t len = 0;
  48   size_t n;
  49
  50   if (argc < 2)
  51     error (1, 0, "usage: %s <random seed> [-nocache]", argv[0]);
  52
  53   if (argc == 3)
  54     {
  55       if (strcmp (argv[2], "-nocache") == 0)
  56         nocache = true;
  57       else
  58         {
  59           printf ("Unknown option %s!\n", argv[2]);
  60           exit (1);
  61         }
  62     }
  63
  64   setlocale (LC_ALL, "");
  65
  66   nstrings_max = 100;
  67   nstrings = 0;
  68   strings = (struct lines *) malloc (nstrings_max * sizeof (struct lines));
  69   if (strings == NULL)
  70     {
  71       perror (argv[0]);
  72       exit (1);
  73     }
  74
  75   while (1)
  76     {
  77       char saved, *word, *newp;
  78       size_t l, line_len, needed;
  79
  80       if (getline (&line, &len, stdin) < 0)
  81         break;
  82
  83       if (nstrings == nstrings_max)
  84         {
  85           strings = (struct lines *) realloc (strings,
  86                                               (nstrings_max *= 2)
  87                                                * sizeof (*strings));
  88           if (strings == NULL)
  89             {
  90               perror (argv[0]);
  91               exit (1);
  92             }
  93         }
  94       strings[nstrings].line = strdup (line);
  95       l = strcspn (line, ":(;");
  96       while (l > 0 && isspace (line[l - 1]))
  97         --l;
  98
  99       saved = line[l];
 100       line[l] = '\0';
 101
 102       if (nocache)
 103         {
 104           line_len = strlen (line);
 105           word = malloc (line_len + SMALL_STR_SIZE + 1);
 106           if (word == NULL)
 107             {
 108               printf ("malloc failed: %m\n");
 109               exit (1);
 110             }
 111           memset (word, ' ', SMALL_STR_SIZE);
 112           memcpy (word + SMALL_STR_SIZE, line, line_len);
 113           word[line_len + SMALL_STR_SIZE] = '\0';
 114         }
 115       else
 116         word = line;
 117
 118       needed = strxfrm (NULL, word, 0);
 119       newp = malloc (needed + 1);
 120       if (newp == NULL)
 121         {
 122           printf ("malloc failed: %m\n");
 123           exit (1);
 124         }
 125       strxfrm (newp, word, needed + 1);
 126       strings[nstrings].xfrm = newp;
 127
 128       if (nocache)
 129         free (word);
 130       line[l] = saved;
 131       ++nstrings;
 132     }
 133   free (line);
 134
 135   /* First shuffle.  */
 136   srandom (atoi (argv[1]));
 137   for (n = 0; n < 10 * nstrings; ++n)
 138     {
 139       int r1, r2, r;
 140       size_t idx1 = random () % nstrings;
 141       size_t idx2 = random () % nstrings;
 142       struct lines tmp = strings[idx1];
 143       strings[idx1] = strings[idx2];
 144       strings[idx2] = tmp;
 145
 146       /* While we are at it a first little test.  */
 147       r1 = strcmp (strings[idx1].xfrm, strings[idx2].xfrm);
 148       r2 = strcmp (strings[idx2].xfrm, strings[idx1].xfrm);
 149       r = -(r1 ^ r2);
 150       if (r)
 151         r /= abs (r1 ^ r2);
 152
 153       if (r < 0 || (r == 0 && (r1 != 0 || r2 != 0))
 154           || (r > 0 && (r1 ^ r2) >= 0))
 155         printf ("collate wrong: %d vs. %d\n", r1, r2);
 156     }
 157
 158   /* Now sort.  */
 159   qsort (strings, nstrings, sizeof (struct lines), xstrcmp);
 160
 161   /* Print the result.  */
 162   for (n = 0; n < nstrings; ++n)
 163     {
 164       fputs (strings[n].line, stdout);
 165       free (strings[n].line);
 166       free (strings[n].xfrm);
 167     }
 168   free (strings);
 169
 170   return result;
 171 }
 172
 173
 174 static int
 175 xstrcmp (const void *ptr1, const void *ptr2)
 176 {
 177   const struct lines *l1 = (const struct lines *) ptr1;
 178   const struct lines *l2 = (const struct lines *) ptr2;
 179
 180   return strcmp (l1->xfrm, l2->xfrm);
 181 }