I am attempting to use
File::Find to recurse down a dated directory structure and yell when it finds a certain (the "latest") path/filename within that structure (at the 'year', 'month' or 'day' level).
Running this script with an argument of /path/content, for example, should recurse down a directory tree and print out:
2002/07/14/path/content
if it's able to locate path/content (with any file extension) within the 2002/07/14 directory.
The trick here is that I need the testing done such that the most recent dates are checked first (year 2002 tested before 2001, month 12 checked before 11). The File::Find::Unix man page would seem to indicate that all I need to do is specify a 'preprocess' function to do my sorting. My preprocess function is not getting called and I'm at a loss as to why. The script I'm using appears below (it's small).
use strict;
use File::Find;
use File::Spec;
my $search = File::Spec->canonpath("/".shift());
1 while $search =~ s!/[^/]+/\.\./?!/!;
$search =~ s!^/!!;
find({
wanted => \&wanted,
preprocess => \&preprocess, # this should do it
follow => 1,
}, ".");
sub wanted {
return unless -d;
print "testing $File::Find::name\n"; # see these fine
if (glob("$_/${search}.*")) {
print "$File::Find::name/$search\n";
exit;
}
}
sub preprocess {
print "pre-processing @_\n"; # never see this
return sort { $b <=> $a } grep { /^\d+$/ } @_;
}
Output:
[fastolfe@home test]$ ./resolve-name /path/content
testing .
testing ./2001
testing ./2001/05
testing ./2001/05/30
./2001/05/30/path/content
Unfortunately the one it found was actually the oldest, which might imply that it's following a standard ascending sort that one typically sees on Unix.