build/pypng/pnglsch
author Philipp Kewisch <mozilla@kewis.ch>
Tue, 15 Nov 2011 11:39:19 +0100
changeset 9684 64561e066845cf0b3613ef4a38a09e2704eb6598
parent 8729 923b924c9422bddc54a3d8c08b765da58dddeedd
permissions -rw-r--r--
Fix bug 406579 - Update story for timezone database. r=mschroeder,a=philipp

#!/usr/bin/env python
# $URL: http://pypng.googlecode.com/svn/trunk/code/pnglsch $
# $Rev: 107 $
# pnglsch
# PNG List Chunks

import png

def list(out, inp):
    r = png.Reader(file=inp)
    for t,v in r.chunks():
        add = ''
        if len(v) <= 28:
            add = ' ' + v.encode('hex')
        print >>out, "%s %10d%s" % (t, len(v), add)

def main(argv=None):
    import sys

    if argv is None:
        argv = sys.argv
    arg = argv[1:]

    if len(arg) > 0:
        f = open(arg[0], 'rb')
    else:
        f = sys.stdin
    return list(sys.stdout, f)

if __name__ == '__main__':
    main()