Allow bagging to destination #138
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bagit.py
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| if not os.path.isdir(dest_dir): | ||
| os.makedirs(dest_dir) | ||
| else: | ||
| raise RuntimeError(_("The following directory already exists:\n%s"), dest_dir) |
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Consider allowing an empty directory as a target, useful e.g. when creating that directory requires different permissions than the user running bagit has.
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Good point. Would checking for an empty directory like this be enough?
| raise RuntimeError(_("The following directory already exists:\n%s"), dest_dir) | |
| elif len(os.listdir(dest_dir)) > 0: | |
| raise RuntimeError(_("The following directory already exists and contains files:\n%s"), dest_dir) |
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That will work because os.listdir is documented as not including . or .. but I was wondering about performance if someone points it at a directory which a large number of files — the classic Unix answer being os.stat(dest_dir).st_nlink > 2 — but I don't think that'll really be an issue in this scenario.
bagit.py
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| else: | ||
| dest_dir = os.path.abspath(bag_dir) | ||
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| source_dir = os.path.abspath(bag_dir) |
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Consider using realpath instead to resolve symlinks (not related to this change, just a general observation)
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I use it on line 233 to address an issue with getcwd, but didn't want to break too far from existing practice without more consideration. I don't think it would be an issue. Are there any edge cases that would be good to test for?
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I couldn't think of any edge cases, but I did have to invoke realpath in the setup class for the tests.
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I've incorporated the suggested changes. After using this branch for a few months, I changed the copy mechanism to use a single copytree call. To do this, I had to create the temporary directory name from scratch since copytree will not copy to pre-existing directories. I couldn't think of a way to cover L245-248 with a test. |
Based on @runderwood #92, but reimplemented within the current codebase to address #32 and #136
Major difference, this places every source within its own bag rather than combining bag, e.g.
bagit.py --destination foo/ --directory bar/ baz/will create
which mirrors current behavior that bagit.py --directory bar/ baz/ creates