//
// zerodir -- List all zero length files in current directory.
//
// - Excludes system, hidden, or read-only files.
//
// 05-Jul-2010 Tom Van Baak (tvb) www.LeapSecond.com/tools
//

#include <direct.h>
#include <io.h>
#include <stdio.h>
#include <stdlib.h>

void main (int argc, char *argv[])
{
    long fh, n;
    struct _finddata_t fd;
    char *pattern;

    // Get optional filename pattern.

    pattern = (argc > 1) ? argv[1] : "*";

    // Find all files matching pattern.

    if ((fh = _findfirst(pattern, &fd)) == -1) {
        fprintf(stderr, "no files matching \"%s\"\n", pattern);
        exit(1);
    }
    n = 0;
    do {
        if ( !(fd.attrib & _A_SUBDIR) && fd.size == 0) {
            if (fd.attrib & _A_SYSTEM) {
                printf("%s [system]\n", fd.name);

            } else if (fd.attrib & _A_HIDDEN) {
                printf("%s [hidden]\n", fd.name);

            } else if (fd.attrib & _A_RDONLY) {
                printf("%s [read-only]\n", fd.name);

            } else {
                printf("%s\n", fd.name);
                n += 1;
            }
        }
    } while (_findnext(fh, &fd) != -1);
    _findclose(fh);

    if (n == 0) {
        fprintf(stderr, "no zero length files found\n");
    }
}