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/* Simple test for some fts functions.
Copyright (C) 2015-2021 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 <sys/types.h>
#include <sys/stat.h>
#include <fts.h>
#include <errno.h>
#include <error.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
static void prepare (void);
static int do_test (void);
#define PREPARE(argc, argv) prepare ()
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
static char *fts_test_dir;
static void
make_dir (const char *dirname)
{
char *name;
if (asprintf (&name, "%s/%s", fts_test_dir, dirname) < 0)
{
puts ("out of memory");
exit (1);
}
if (mkdir (name, 0700) < 0)
{
printf ("cannot create dir \"%s\": %m\n", name);
exit (1);
}
add_temp_file (name);
}
static void
make_file (const char *filename)
{
char *name;
if (asprintf (&name, "%s/%s", fts_test_dir, filename) < 0)
{
puts ("out of memory");
exit (1);
}
int fd = open (name, O_WRONLY | O_CREAT | O_EXCL, 0600);
if (fd < 0)
{
printf ("cannot create file \"%s\": %m\n", name);
exit (1);
}
close (fd);
add_temp_file (name);
}
static void
prepare (void)
{
char *dirbuf;
char dir_name[] = "/tst-fts.XXXXXX";
if (asprintf (&dirbuf, "%s%s", test_dir, dir_name) < 0)
{
puts ("out of memory");
exit (1);
}
if (mkdtemp (dirbuf) == NULL)
{
puts ("cannot create temporary directory");
exit (1);
}
add_temp_file (dirbuf);
fts_test_dir = dirbuf;
make_file ("12");
make_file ("345");
make_file ("6789");
make_dir ("aaa");
make_file ("aaa/1234");
make_file ("aaa/5678");
make_dir ("bbb");
make_file ("bbb/1234");
make_file ("bbb/5678");
make_file ("bbb/90ab");
}
/* Largest name wins, otherwise strcmp. */
static int
compare_ents (const FTSENT **ent1, const FTSENT **ent2)
{
short len1 = (*ent1)->fts_namelen;
short len2 = (*ent2)->fts_namelen;
if (len1 != len2)
return len1 - len2;
else
{
const char *name1 = (*ent1)->fts_name;
const char *name2 = (*ent2)->fts_name;
return strcmp (name1, name2);
}
}
/* Count the number of files seen as children. */
static int files = 0;
static void
children (FTS *fts)
{
FTSENT *child = fts_children (fts, 0);
if (child == NULL && errno != 0)
{
printf ("FAIL: fts_children: %m\n");
exit (1);
}
while (child != NULL)
{
short level = child->fts_level;
const char *name = child->fts_name;
if (child->fts_info == FTS_F || child->fts_info == FTS_NSOK)
{
files++;
printf ("%*s%s\n", 2 * level, "", name);
}
child = child->fts_link;
}
}
/* Count the number of dirs seen in the test. */
static int dirs = 0;
static int
do_test (void)
{
char *paths[2] = { fts_test_dir, NULL };
FTS *fts;
fts = fts_open (paths, FTS_LOGICAL, &compare_ents);
if (fts == NULL)
{
printf ("FAIL: fts_open: %m\n");
exit (1);
}
FTSENT *ent;
while ((ent = fts_read (fts)) != NULL)
{
const char *name = ent->fts_name;
short level = ent->fts_level;
switch (ent->fts_info)
{
case FTS_F:
/* Don't show anything, children will have on parent dir. */
break;
case FTS_D:
printf ("%*s%s =>\n", 2 * level, "", name);
children (fts);
break;
case FTS_DP:
dirs++;
printf ("%*s<= %s\n", 2 * level, "", name);
break;
case FTS_NS:
case FTS_ERR:
printf ("FAIL: fts_read ent: %s\n", strerror (ent->fts_errno));
exit (1);
break;
default:
printf ("FAIL: unexpected fts_read ent %s\n", name);
exit (1);
break;
}
}
/* fts_read returns NULL when done (and clears errno)
or when an error occured (with errno set). */
if (errno != 0)
{
printf ("FAIL: fts_read: %m\n");
exit (1);
}
if (fts_close (fts) != 0)
{
printf ("FAIL: fts_close: %m\n");
exit (1);
}
if (files != 8)
{
printf ("FAIL: Unexpected number of files: %d\n", files);
return 1;
}
if (dirs != 3)
{
printf ("FAIL: Unexpected number of dirs: %d\n", dirs);
return 1;
}
puts ("PASS");
return 0;
}
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