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gdal2tiles --version crashes after printing version #2096

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daniel-j-h opened this issue Dec 11, 2019 · 1 comment
Open

gdal2tiles --version crashes after printing version #2096

daniel-j-h opened this issue Dec 11, 2019 · 1 comment
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good first issue

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@daniel-j-h
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@daniel-j-h daniel-j-h commented Dec 11, 2019

See below; version 2.4.2 from the ubuntugis ppa.

Expected output is just the version information, no crash.

$ gdal2tiles.py --version
GDAL 2.4.2, released 2019/06/28
Traceback (most recent call last):
  File "/usr/bin/gdal2tiles.py", line 2927, in <module>
    main()
  File "/usr/bin/gdal2tiles.py", line 2917, in main
    input_file, output_folder, options = process_args(argv[1:])
TypeError: 'NoneType' object has no attribute '__getitem__'

Coming from

gdal/gdal/swig/python/scripts/gdal2tiles.py

Line 2922 in d7a5cd4

input_file, output_folder, options = process_args(argv[1:])
@kannes
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@kannes kannes commented Dec 22, 2019

The cause is one line higher up, in

gdal/gdal/swig/python/scripts/gdal2tiles.py

Line 2921 in d7a5cd4

argv = gdal.GeneralCmdLineProcessor(sys.argv)
gdal.GeneralCmdLineProcessor returns None if you pass "--version". I have no idea what that function does and how it is supposed to work. There does not seem to be documentation for it.

Other bundled Python scripts https://github.com/OSGeo/gdal/search?q=GeneralCmdLineProcessor&unscoped_q=GeneralCmdLineProcessor check for None and abort, but they also do not use OptionParser. gdal2tiles.py is a totally foreign script, I would suggest simply dropping the version parameter to solve this. :}
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@daniel-j-h @rouault @kannes
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