[issue16512] imghdr doesn't support jpegs with an ICC profile

[Kovid Goyal]

Kovid Goyal added the comment:

The attached patch is insufficient, for example, it fails on http://nationalpostnews.files.wordpress.com/2013/03/budget.jpeg?w=300&h=1571

Note that the linux file utility identifies a files as "JPEG Image data" if the first two bytes of the file are \xff\xd8.

A slightly stricter test that catches more jpeg files:

def test_jpeg(h, f):
    if (h[6:10] in (b'JFIF', b'Exif')) or (h[:2] == b'\xff\xd8' and b'JFIF' in h[:32]):
        return 'jpeg'

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nosy: +kovid

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16512>
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