How can I generate a text list of image filenames and dimensions on OS X?

April 3, 2009 12:28 PM

How can I generate a text list of image filenames and dimensions on OS X?

I have about 150 images and I would like to generate a tidy little text list of these images' filenames and dimensions (in pixels.)

Ultimately this will be uses to populate an XML file for use with an image gallery, if that helps at all.

I'm just trying to avoid having to manually write out each individual width and height.

I'm running Leopard (10.5.6) and have access to Adobe CS4 software, but as far as I can tell this isn't possible with something like Bridge and Googling has failed me.

Any ideas?

posted by joshwebb to computers & internet (5 comments total)

You can do this by querying Spotlight's database with the mdls command, e.g.: mdls -name kMDItemPixelHeight -name kMDItemPixelWidth *.jpg

You'll still need to process that list to get it into exactly the form you want, but the information is there.
posted by hattifattener at 12:38 PM on April 3 [2 favorites]

Install ImageMagick, and from a terminal, do
identify *
in the folder containing the images.
posted by scruss at 12:42 PM on April 3

Mac OS X has the image command built in to the operating system. Type man image for more info.

You could combine image with a Perl script like the following example, to get the image filename, width and height into an XML file:

#!/usr/bin/perl -w

use warnings;
use strict;
use Getopt::Long;
use File::Basename;
use IO::File;
use XML::Writer;

my ($inputDir, $outputDir, $imageSuffix);
my $optResults = GetOptions("inputDir=s" => \$inputDir, "outputDir=s" => \$outputDir, "imageSuffix=s" => \$imageSuffix)

# gallery XML options (cf. http://www.airtightinteractive.com/simpleviewer/options.html)
my $maxImageWidth = 960;
my $maxImageHeight = 640;
my $textColor = "0xFFFFFF";
my $frameColor = "0xFFFFFF";
my $frameWidth = "10";
my $stagePadding = "40";
my $navPadding = "40";
my $thumbnailColumns = "3";
my $thumbnailRows = "5";
my $navPosition = "left";
my $vAlign = "center";
my $hAlign = "center";
my $title = "$cellLine";
my $enableRightClickOpen = "true";
my $backgroundImagePath = "";
my $imagePath = "";
my $thumbPath = "";

my $galleryXMLOutput = new IO::File("> $outputDir/gallery.xml");
my $galleryXML = new XML::Writer(OUTPUT => $galleryXMLOutput, NEWLINES => 1, DATA_INDENT => 1);
$galleryXML->xmlDecl('UTF-8');
$galleryXML->startTag('simpleviewergallery', maxImageWidth=>$maxImageWidth, maxImageHeight=>$maxImageHeight, textColor=>$textColor, frameColor=>$frameColor, frameWidth=>$frameWidth, stagePadding=>$stagePadding, navPadding=>$navPadding, thumbnailColumns=>$thumbnailColumns, thumbnailRows=>$thumbnailRows, navPosition=>$navPosition, vAlign=>$vAlign, hAlign=>$hAlign, title=>$title, enableRightClickOpen=>$enableRightClickOpen, backgroundImagePath=>$backgroundImagePath, imagePath=>$imagePath, thumbPath=>$thumbPath);

open (LS, "ls $inputDir/*.$imageSuffix |") or die $?;
while (<LS>) {
  chomp;
  $_ =~ s/\r//;
  my ($filename, undef, undef) = fileparse($_);
  my $width = `image width $_`;
  my $height = `image height $_`;
  $galleryXML->dataElement('filename' => $fileName);
  $galleryXML->dataElement('caption' => $_);
  $galleryXML->dataElement('width' => $width);
  $galleryXML->dataElement('height' => $height);
  $galleryXML->endTag('image');
}
close (LS);

$galleryXML->endTag('simpleviewergallery');
$galleryXML->end();
$galleryXMLOutput->close();

# some other system() cmds to copy images, thumbnails and SimpleViewer resources to $outputDir

exit 0;

You could run it like this:

makeGalleryXML.pl --inputDir=sourceImages --outputDir=myGallery --imageSuffix="png"

which puts a gallery.xml file in the folder myGallery, listing PNG files and their attributes in the folder sourceImages.
posted by Blazecock Pileon at 1:01 PM on April 3

Might want to add:

if (! -d $outputDir) { system ("mkdir -p $outputDir") == 0 or die $?; }

just before the line:

my $galleryXMLOutput = new IO::File("> $outputDir/gallery.xml");
posted by Blazecock Pileon at 1:03 PM on April 3

Actually, scrap image and just use the Spotlight database or Imagemagick.
posted by Blazecock Pileon at 1:11 PM on April 3