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#!/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()
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