#!/usr/bin/env python

"""
Print the dimension(s) of the image(s) passed on the command line.  Either can
be run on files or on local files.
"""

import os
import urllib
import ImageFile

def getsizes(uri):

    # kill the << warnings from PIL...
    import warnings
    warnings.filterwarnings("ignore", "x<<y")
    
    if uri.startswith("http://"):
        file = urllib.urlopen(uri)
    else:
        file = open(uri)
        
    p = ImageFile.Parser()
    while 1:
        data = file.read(1024)
        if not data:
            break
        p.feed(data)
        if p.image:
            return p.image.size
            break
    file.close()
    return None

if __name__ == '__main__':
    import sys
    for uri in sys.argv[1:]:
        size = getsizes(uri)
        if not size:
            size = 'Invalid or nonexistant URI'
        print "%s: %s" % (os.path.basename(uri), size)