/***************************************************************************
 * This file is a part of CADS/UVS fits2jpeg conversion software           *
 *   Copyright (C) 2012 by CADS/UV Software Team,                          *
 *                         Indian Institute of Astrophysics                *
 *                         Bangalore 560034                                *
 *                         cads_AT_iiap.res.in                             *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

/*Header Definitions*/
#include "fits2jpeg.h"

/*---------------------------------------------------------------------------*
 * MAKE_DIR: Wrapper to mkdir() with some basic error checks
 *---------------------------------------------------------------------------*/
int make_dir(char * folder, mode_t mode)
{
    struct stat st;
    int status = 0;

    if (stat(folder, &st) != 0)
    {
        /* Directory does not exist - make it */
        status = mkdir(folder, mode);
        if (status) return status;
    }
    else if (!S_ISDIR(st.st_mode))
        return status = -1;
    return status;
}

/*---------------------------------------------------------------------------*
 * MAKE_TREE: moves through a directory path and creates directories and
 *            subdirectories using make_dir(), top-down.
 *---------------------------------------------------------------------------*/
int make_tree(char * folder, mode_t mode)
{
    char *pp;
    char *sp;
    int  status = 0;
    char *fpath = strdup(folder);

    pp = fpath;

    while (status == 0 && (sp = strchr(pp, '/')) != 0)
    {
        if (sp != pp)
        {
            *sp = '\0';
            status = make_dir(fpath, mode);
            *sp = '/';
        }
        pp = sp + 1;
    }

    if (status == 0) status = make_dir(folder, mode);
    return status;
}

/*---------------------------------------------------------------------------*
 * STRDUP: This one is not a part of ANSI-strict, so we had to write one
 *---------------------------------------------------------------------------*/
char *strdup(const char *str)
{
    int n = strlen(str) + 1;
    char *dup = malloc(n);
    if(dup)
    {
        strcpy(dup, str);
    }
    return dup;
}