#!/usr/bin/env perl

use strict;
use warnings;

use Cwd;
use File::Find;

my $cwd = getcwd();
my @dirs = map "$cwd/$_", qw{a b c};

print "--- READING ---\n";
find(\&wanted_to_read, @dirs);

print "--- WRITING ---\n";
find(\&wanted_to_write, @dirs);

sub wanted_to_read {
    if (! -f $File::Find::name) {
        print "$File::Find::name is not a normal file.\n";
    }
    elsif (-z _) {
        print "$File::Find::name is zero-length.\n";
    }
    elsif (! -r _) {
        print "$File::Find::name is not readable.\n";
    }
    else {
        print "OK to READ: $File::Find::name\n";
    }

    return;
}

sub wanted_to_write {
    if (! -f $File::Find::name) {
        print "$File::Find::name is not a normal file.\n";
    }
    elsif (! -r _) {
        print "$File::Find::name is not readable.\n";
    }
    elsif (! -w _) {
        print "$File::Find::name is not writable.\n";
    }
    else {
        print "OK to WRITE: $File::Find::name\n";
    }

    return;
}