/* 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;
}