empty.c

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/*!
   \file lib/manage/empty.c
 
   \brief Manage Library - Check if element is empty
 
   (C) 2001-2011 by the GRASS Development Team
 
   This program is free software under the GNU General Public License
   (>=v2). Read the file COPYING that comes with GRASS for details.
 
   \author Original author CERL
 */
 
/* look for at least one file in the element */
#include <sys/types.h>
#include <dirent.h>
 
#include <grass/gis.h>
 
/*!
   \brief Check if element is empty
 
   \param elem element name
 
   \return 1 empty
   \return 0 not empty
 */
int M__empty(char *elem)
{
    DIR *dirp;
    struct dirent *dp;
    char dir[GPATH_MAX];
    int any;
 
    G_file_name(dir, elem, "", G_mapset());
 
    any = 0;
    if ((dirp = opendir(dir)) != NULL) {
        while (!any && (dp = readdir(dirp)) != NULL) {
            if (dp->d_name[0] != '.')
                any = 1;
        }
        closedir(dirp);
    }
 
    return any == 0;
}