/* Copyright (c) 2003, Rene Luria aka herel <rene@luria.ch>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright notice,
 *     * this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *     * notice, this list of conditions and the following disclaimer in the
 *     * documentation and/or other materials provided with the distribution.
 *     * Neither the name of the author nor the names of its
 *     * contributors may be used to endorse or promote products derived from
 *     * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE. */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <unistd.h>
#include <errno.h>

static int purge_split_dir (char *outdir)
{
	int ok = 0;
	struct stat buf;
	if (stat (outdir, &buf) == -1)
	{
		/* ptet ke le rep n'existe pas */
		if (errno == ENOENT)
		{
			if (mkdir (outdir, 00777))
				fprintf (stderr, "cannot mkdir\n");
			else
				ok = 1;
		}
		else
			fprintf (stderr, "cannot stat dir %s\n", outdir);
	}
	else
	{
		/* ptet que c'est pas un rep */
		if (! S_ISDIR (buf.st_mode))
			fprintf (stderr, "%s is not a rep\n", outdir);
		else
			ok = 1;
	}
	if (ok)
	{
		/* maintenant on le vide */
		DIR *pdir;
		struct dirent *ent;
		if ((pdir = opendir (outdir)) != NULL)
		{
			while ((ent = readdir (pdir)) != NULL)
			{
				char buffer[1024];
				if (strcmp (ent->d_name, ".") && strcmp (ent->d_name, ".."))
				{
					memset (buffer, 0, 1024);
					snprintf (buffer, 1023, "%s/%s", outdir, ent->d_name);
					if (unlink (buffer))
					{
						fprintf (stderr, "cannot remove file %s\n", ent->d_name);
						ok = 0;
						break;
					}
				}
			}
		}
		else
			fprintf (stderr, "cannot open dir %s\n", outdir);
	}
	return !ok;
}

int main (int argc, char **argv)
{
	if (argc != 2)
	{
		fprintf (stderr, "no rep specified\n");
		return EXIT_FAILURE;
	}
	if (purge_split_dir (argv[1]))
		return EXIT_FAILURE;
	printf ("ok\n");
	return EXIT_SUCCESS;
}