Bug: Valid JPEG2000 images being detected and processed as ND2

[rleigh]

See: ​https://www.openmicroscopy.org/qa2/qa/feedback/7906/ for four sample images
and ​http://lists.openmicroscopy.org.uk/pipermail/ome-users/2014-February/004210.html

Each of these images is (what appears to be) valid JPEG2000 data; I can certainly view them as such outside bioformats using Krita/Gwenview?.

With bioformats, this is being read with ND2Reader, which if I read readers.txt correctly should be a fallback if JPEG2000Reader fails to treat it as valid JPEG2000 data? If that's the case, it looks like these are files which JPEG2000Reader should be able to read, but currently can't handle. Unless the ND2Reader should be able to handle these as ND2 files as well, in which case it's a problem with ND2Reader.

[rleigh]

% showinf 7906/2591B.jp2
Checking file format [Nikon ND2]
Initializing reader
ND2Reader initializing ./7906/2591B.jp2
Calculating image offsets
Finding XML metadata
Parsing XML
Finished assembling XML string
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: -11198
        at java.lang.AbstractStringBuilder.substring(AbstractStringBuilder.java:872)
        at java.lang.StringBuffer.substring(StringBuffer.java:412)
        at loci.formats.in.NativeND2Reader.initFile(NativeND2Reader.java:1383)
        at loci.formats.FormatReader.setId(FormatReader.java:1360)
        at loci.formats.DelegateReader.setId(DelegateReader.java:267)
        at loci.formats.ImageReader.setId(ImageReader.java:781)
        at loci.formats.ReaderWrapper.setId(ReaderWrapper.java:576)
        at loci.formats.ReaderWrapper.setId(ReaderWrapper.java:576)
        at loci.formats.tools.ImageInfo.testRead(ImageInfo.java:993)
        at loci.formats.tools.ImageInfo.main(ImageInfo.java:1075)

This affects dev_4_4, dev_5_0, develop.

[mlinkert]

PR opened for inclusion in 5.0.3: ​https://github.com/openmicroscopy/bioformats/pull/1159