#!/usr/bin/env python # see: http://www.amk.ca/python/code/ import sys, os, getopt try: from PIL import Image except ImportError: print >>sys.stderr, ("Unable to import PIL.Image; " "is the Python Imaging Library installed?") sys.exit(0) __version__ = '1.01' __doc__ = """%s [option] file1 file2 Options: --help Display this usage message --html Output HTML to stdout --resize x y Resize specified images to x,y --rotate x Rotate the image counter clockwise for x degrees --size Display the image sizes --thumbnail x y Make thumbnails of specified images, ignoring existing thumbnails that happen to be listed among the files. If a filename is of the form *_thumb.*, it's assumed to be a thumbnail. """ % sys.argv[0] def is_thumbnail (filename): "Returns true if the filename is for a thumbnail" root, ext = os.path.splitext(filename) return root.endswith('_thumb') def thumbnail_name (filename): """Return the thumbnail form of a filename, converting foo.jpg to foo_thumb.jpg. """ assert not is_thumbnail(filename) root, ext = os.path.splitext(filename) return root + '_thumb' + ext def output_html (args): for filename in args: if is_thumbnail(filename): continue thumbnail = thumbnail_name(filename) if not os.path.exists(thumbnail): print >>sys.stderr, ("%s: thumbnail %s doesn't exist" % (sys.argv[0], thumbnail) ) im = Image.open(thumbnail) width, height = im.size print ('

' '\n\nXXX\n' '


\n\n' % (filename, thumbnail, width, height) ) def make_thumbnails (args): x, y = int(args[0]), int(args[1]) args = args[2:] ; args.sort() for filename in args: if is_thumbnail(filename): continue thumbnail = thumbnail_name(filename) print >>sys.stderr, filename im = Image.open(filename) im.thumbnail((x,y)) im.save(thumbnail) def rotate_images (args): x = int(args[0]) args = args[1:] ; args.sort() for filename in args: im = Image.open(filename) im2 = im.rotate(x) im2.save(filename) print "rotated %s %i degrees" % (filename, x) def resize_images (args): x, y = int(args[0]), int(args[1]) args = args[2:] ; args.sort() for filename in args: im = Image.open(filename) w,h = im.size im2 = im.resize((x,y)) print >>sys.stderr, ('%s: was %i,%i; resizing to %i,%i' % (filename, w,h, x,y) ) im2.save(filename) def main (): opts, args = getopt.getopt(sys.argv[1:], 'h', ['help', 'html', 'resize', 'size', 'thumbnail', 'rotate']) # Remove the unused option arguments opts = [opt for opt,arg in opts] # Print usage message if requested if '-h' in opts or '--help' in opts: print >>sys.stderr, __doc__ sys.exit(0) # Ensure that exactly one option is supplied if len(opts) == 0: print >> sys.stderr, ("%s: must specify one of --size, --help" "\n --html, --resize, --thumbnail --rotate" % sys.argv[0] ) sys.exit(0) elif len(opts) > 1: print >> sys.stderr, ("%s: cannot specify multiple options" % sys.argv[0] ) sys.exit(0) # Perform each of the possible actions opt = opts[0] if opt == '--html': output_html(args) elif opt == '--resize': resize_images(args) elif opt == '--rotate': rotate_images(args) elif opt == '--size': for filename in args: image = Image.open(filename) x, y = image.size print filename, ':', x,y elif opt == '--thumbnail': make_thumbnails(args) else: print >>sys.stderr, ("%s: unknown option" % sys.argv[0]) if __name__ == '__main__': main()