1: /* Test collation function via transformation using real data.
    2:    Copyright (C) 1997, 1998, 2000, 2003 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, write to the Free
   18:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   19:    02111-1307 USA.  */
   20: 
   21: #include <ctype.h>
   22: #include <error.h>
   23: #include <locale.h>
   24: #include <stdio.h>
   25: #include <stdlib.h>
   26: #include <string.h>
   27: 
   28: 
   29: struct lines
   30: {
   31:   char *xfrm;
   32:   char *line;
   33: };
   34: 
   35: static int xstrcmp (const void *, const void *);
   36: 
   37: int
   38: main (int argc, char *argv[])
   39: {
   40:   int result = 0;
   41:   size_t nstrings, nstrings_max;
   42:   struct lines *strings;
   43:   char *line = NULL;
   44:   size_t len = 0;
   45:   size_t n;
   46: 
   47:   if (argc < 2)
   48:     error (1, 0, "usage: %s <random seed>", argv[0]);
   49: 
   50:   setlocale (LC_ALL, "");
   51: 
   52:   nstrings_max = 100;
   53:   nstrings = 0;
   54:   strings = (struct lines *) malloc (nstrings_max * sizeof (struct lines));
   55:   if (strings == NULL)
   56:     {
   57:       perror (argv[0]);
   58:       exit (1);
   59:     }
   60: 
   61:   while (1)
   62:     {
   63:       char saved, *newp;
   64:       int needed;
   65:       int l;
   66:       if (getline (&line, &len, stdin) < 0)
   67:         break;
   68: 
   69:       if (nstrings == nstrings_max)
   70:         {
   71:           strings = (struct lines *) realloc (strings,
   72:                                               (nstrings_max *= 2)
   73:                                                * sizeof (*strings));
   74:           if (strings == NULL)
   75:             {
   76:               perror (argv[0]);
   77:               exit (1);
   78:             }
   79:         }
   80:       strings[nstrings].line = strdup (line);
   81:       l = strcspn (line, ":(;");
   82:       while (l > 0 && isspace (line[l - 1]))
   83:         --l;
   84: 
   85:       saved = line[l];
   86:       line[l] = '\0';
   87:       needed = strxfrm (NULL, line, 0);
   88:       newp = malloc (needed + 1);
   89:       strxfrm (newp, line, needed + 1);
   90:       strings[nstrings].xfrm = newp;
   91:       line[l] = saved;
   92:       ++nstrings;
   93:     }
   94:   free (line);
   95: 
   96:   /* First shuffle.  */
   97:   srandom (atoi (argv[1]));
   98:   for (n = 0; n < 10 * nstrings; ++n)
   99:     {
  100:       int r1, r2, r;
  101:       size_t idx1 = random () % nstrings;
  102:       size_t idx2 = random () % nstrings;
  103:       struct lines tmp = strings[idx1];
  104:       strings[idx1] = strings[idx2];
  105:       strings[idx2] = tmp;
  106: 
  107:       /* While we are at it a first little test.  */
  108:       r1 = strcmp (strings[idx1].xfrm, strings[idx2].xfrm);
  109:       r2 = strcmp (strings[idx2].xfrm, strings[idx1].xfrm);
  110:       r = -(r1 ^ r2);
  111:       if (r)
  112:         r /= abs (r1 ^ r2);
  113: 
  114:       if (r < 0 || (r == 0 && (r1 != 0 || r2 != 0))
  115:           || (r > 0 && (r1 ^ r2) >= 0))
  116:         printf ("collate wrong: %d vs. %d\n", r1, r2);
  117:     }
  118: 
  119:   /* Now sort.  */
  120:   qsort (strings, nstrings, sizeof (struct lines), xstrcmp);
  121: 
  122:   /* Print the result.  */
  123:   for (n = 0; n < nstrings; ++n)
  124:     {
  125:       fputs (strings[n].line, stdout);
  126:       free (strings[n].line);
  127:       free (strings[n].xfrm);
  128:     }
  129:   free (strings);
  130: 
  131:   return result;
  132: }
  133: 
  134: 
  135: static int
  136: xstrcmp (ptr1, ptr2)
  137:      const void *ptr1;
  138:      const void *ptr2;
  139: {
  140:   const struct lines *l1 = (const struct lines *) ptr1;
  141:   const struct lines *l2 = (const struct lines *) ptr2;
  142: 
  143:   return strcmp (l1->xfrm, l2->xfrm);
  144: }