I'm new to PerlMonks and fairly new to PERL. Long story short, I'm trying to clean up and speed up code and am struggling with Find::File::Rule. I read other posts here and on StackOverflow that helped, but I can't get to that last little bit.

The story: I want to build a list of directories or files, but exclude some based on patterns.

It started with:

find ( {
    no_chdir => 0,
    wanted => sub {
        return unless -d;   # skip files; we're tagging folders
        return if $File::Find::name =~ /\/\./;
        return if $File::Find::name =~ /\./;
        return if $File::Find::name =~ /\.store$/i;
        return if $File::Find::name =~ /\/LOG(\/|$)/i;
        return if $File::Find::name =~ /\.go\./i;    
        return if $File::Find::name =~ /\/cache(\/|$)/i; 
        return if $File::Find::name =~ /\.store$/i;    
        return if $File::Find::name =~ /\/AVCHD(\/|$)/i; 
        push ( @fileList, $File::Find::name ); # get name with path
        }},
    $tagLocation );
[download]

Hideous, but it worked. So I cleaned it up to:

our @dirExclusions = qw( \.
    \/LOG(\/|$)
    \/cache(\/|$)
    \/AVCHD(\/|$)
    );
# call regex only once
our $dirExclusionsQR = join( '|', @dirExclusions );
# compile the expression
$dirExclusionsQR = qr{$dirExclusionsQR}i;

my @fileList3;
find ( {
    no_chdir => 0,
    wanted => sub {
        return unless -d;   # skip files; we're tagging folders
        return if $File::Find::name =~ $dirExclusionsQR;
        push ( @fileList3, $File::Find::name );         
        }},
    $tagLocation );
[download]

Much better, and I get the benefit from qr//. Life is good. Now I want to make it more readable and perhaps faster with "File::Find::Rule" and ->name()->prune. So:

our @dirExclusions = qw( \.
    \/LOG(\/|$)
    \/cache(\/|$)
    \/AVCHD(\/|$)
    );
our @dirExclusionsQR = map { qr/$_/i } @dirExclusions;

my $rule = File::Find::Rule->new;
$rule->or(
    $rule->new->directory->name( @dirExclusionsQR )->prune->discard,
    $rule->new->directory);

my @fileList2;
@fileList2 = $rule->in($tagLocation);
[download]

This version doesn't return anything. I'll spare you the variants of putting qr inside @dirExclusions, using q() instead of qw(), taking off the '\/' (on the assumption File::Find::Rule wasn't matching on the full path), and such.

Next attempt: use a string, as in @fileList3 above.

our @dirExclusions = qw( \.
    \/LOG(\/|$)
    \/cache(\/|$)
    \/AVCHD(\/|$)
    );
our $dirExclusionsQR = join( '|', @dirExclusions );
$dirExclusionsQR = qr{$dirExclusionsQR}i;

my $rule = File::Find::Rule->new;
$rule->or(
    $rule->new->directory->name( $dirExclusionsQR )->prune->discard,
    $rule->new->directory);

my @fileList2;
@fileList2 = $rule->in($tagLocation);
[download]

Null output. How about typing it in directly?

$rule->or(
    $rule->new->directory
        ->name( qr/(\.|\/LOG(\/|$)|\/cache(\/|$)|\/AVCHD(\/|$))/i )
        ->prune->discard,
    $rule->new->directory);
[download]

Doesn't work either.

Finally, out of desperation:

our @de = qw (*.* LOG cache AVCHD);

my $rule = File::Find::Rule->new;
$rule->or(
    $rule->new->directory->name( @de )->prune->discard,
    $rule->new->directory);

my @fileList2;
@fileList2 = $rule->in($tagLocation);
[download]

It does work, but I cannot use regex and I don't think the wildcards are compiled. And it doesn't solve my regex issue. What am I missing?

Thanks!

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