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Re^2: Recursive image processing (with ImageMagic)

by wvick (Novice)
on Nov 23, 2012 at 17:43 UTC ( #1005306=note: print w/ replies, xml ) Need Help??


in reply to Re: Recursive image processing (with ImageMagic)
in thread Recursive image processing (with ImageMagic)

Thanks very much for the code. Please see my earlier reply about a reservation in my mind about using File:Find for "all files" processing, and the difficulties it causes for mkdir in the output. What do you think?


Comment on Re^2: Recursive image processing (with ImageMagic)
Re^3: Recursive image processing (with ImageMagic)
by zentara (Archbishop) on Nov 24, 2012 at 09:54 UTC
    It also makes the directory handling more complicated as I need to check or create (regardless) the output folder for and every file created. Unless, I suppose, File:Find returns files in blocks so I can check the last folder created and only mkdir when needed.

    Well if you think about it, you have to test each file and directory to find out if you are in the right one, then if each file in that subdir has a .png ending.

    I think to save cpu cycles, in your case, I would run File::Find with a directory test before the file test. $File::Find::prune = 1 will skip processing any files in that subdir. Something like:

    find sub { # first filter out your directories if (-d && $_ !~ / my_target_dirs_regex / ) { $File::Find::prune = 1; return; } # if you make it to here, you are in your target subdir # now do your ImageMagick processing and mkdir # it has to check each file for a .png ending if (-f && $_ =~ / (.*)\.png$ / ) { # do mkdir stuf # do ImageMagick stuff } # or you could just push the files into an array for later processing # push @goners, $File::Find::name; }, @ARGV;

    I'm not really a human, but I play one on earth.
    Old Perl Programmer Haiku ................... flash japh

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