Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much
 
PerlMonks  

Re: How to Get the Last Subdirectories

by pemungkah (Priest)
on Mar 12, 2010 at 00:50 UTC ( #828175=note: print w/ replies, xml ) Need Help??


in reply to How to Get the Last Subdirectories

I started by setting up a sample set of test directories:

[mcmahon@joe-desk ~]$ ls -R ./example/ ./example/: file nonempty_files_only nonempty_has_dirs ./example/nonempty_files_only: file1 file2 ./example/nonempty_has_dirs: file1 one two ./example/nonempty_has_dirs/one: ./example/nonempty_has_dirs/two:
That's a directory containing files and other (nonempty) directories, one containing only files, and one containing a file and two empty directories.
sub dive { my($d) = shift; return if ! -d $d; my @contents = glob("$d/*"); return $d unless @contents; my @below = map { dive($_) } @contents; return @below ? @below # Stuff below qualifies, this doesn't : $d; # Nothing below qualifies, this does } $d = './example'; print join ", ", dive($d),"\n";
This prints
./example/nonempty_files_only, ./example/nonempty_has_dirs/one, ./exam +ple/nonempty_has_dirs/two
The tricky bit is postponing the decision about whether the current directory is good until you've seen if any subdirectories of it qualify.

Edit: Removed the majority of the comments as they were actually obscuring how short this is; renamed @queue as it was a leftover from a previous, longer, iterative version.


Comment on Re: How to Get the Last Subdirectories
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://828175]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (14)
As of 2015-07-02 10:27 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (33 votes), past polls