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/* Test collation function using real data.
Copyright (C) 1997-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <ctype.h>
#include <error.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct lines
{
char *key;
char *line;
};
static int xstrcoll (const void *, const void *);
static int
signum (int n)
{
return (0 < n) - (n < 0);
}
int
main (int argc, char *argv[])
{
int result = 0;
size_t nstrings, nstrings_max;
struct lines *strings;
char *line = NULL;
size_t len = 0;
size_t n;
if (argc < 2)
error (1, 0, "usage: %s <random seed>", argv[0]);
setlocale (LC_ALL, "");
nstrings_max = 100;
nstrings = 0;
strings = (struct lines *) malloc (nstrings_max * sizeof (struct lines));
if (strings == NULL)
{
perror (argv[0]);
exit (1);
}
while (1)
{
int l;
if (getline (&line, &len, stdin) < 0)
break;
if (nstrings == nstrings_max)
{
strings = (struct lines *) realloc (strings,
(nstrings_max *= 2)
* sizeof (*strings));
if (strings == NULL)
{
perror (argv[0]);
exit (1);
}
}
strings[nstrings].line = strdup (line);
l = strcspn (line, ":(;");
while (l > 0 && isspace (line[l - 1]))
--l;
strings[nstrings].key = strndup (line, l);
++nstrings;
}
free (line);
/* First shuffle. */
srandom (atoi (argv[1]));
for (n = 0; n < 10 * nstrings; ++n)
{
int r1, r2;
size_t idx1 = random () % nstrings;
size_t idx2 = random () % nstrings;
struct lines tmp = strings[idx1];
strings[idx1] = strings[idx2];
strings[idx2] = tmp;
/* While we are at it a first little test. */
r1 = strcoll (strings[idx1].key, strings[idx2].key);
r2 = strcoll (strings[idx2].key, strings[idx1].key);
if (signum (r1) != - signum (r2))
printf ("`%s' and `%s' collate wrong: %d vs. %d\n",
strings[idx1].key, strings[idx2].key, r1, r2);
}
/* Now sort. */
qsort (strings, nstrings, sizeof (struct lines), xstrcoll);
/* Print the result. */
for (n = 0; n < nstrings; ++n)
{
fputs (strings[n].line, stdout);
free (strings[n].line);
free (strings[n].key);
}
free (strings);
return result;
}
static int
xstrcoll (const void *ptr1, const void *ptr2)
{
const struct lines *l1 = (const struct lines *) ptr1;
const struct lines *l2 = (const struct lines *) ptr2;
return strcoll (l1->key, l2->key);
}
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