Ability to run code formatters about git-filter-repo HOT 7 CLOSED

Thanks for this! If anybody finds this useful, I extended @JacobHayes 's code to also reformat Jupyter notebook cells: https://github.com/shenker/nbcleanse/blob/master/nbcleanse.py

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Thanks @newren and people in this thread for the inspiration, here is another adaptation of the lint example.
This time it is meant to format Java code using formatter-maven-plugin and custom style (for example) .

Files are processed in batches. Path to the style should be changed to the real one.

Here is gist: 🔗 .

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Perfect, got it working. Thanks again!

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filter-repo avoids checking out any of the files onto disk, which is part of its speedup. In that sense filter-repo's tree-filter is a bit easier to use here since your linting program probably expects the file on disk in normal format rather than trying to read it from git's history. However, contrib/filter-repo-demos/lint-history was specifically written to show how to lint files in history. You could just call it as
lint-history black
and have it lint every non-binary file in history for you, or you could tweak it to only call the linter for .py files (while keeping all other files as-is).

Also, the lint-history example actually includes three different implementations of how to do it: one in a comment showing how you could do it without writing a full-fledged python script that imports filter-repo, one which does it as a blob callback assuming that it doesn't matter to the lint program what the name of the file is (it just writes every file to .git/info/tmpfile and then runs the linter on that), and a third one that does it as a commit callback which makes sure the basename of the file is the same. You'll only need to use one of the three, but all three are in the demo since it's just trying to demonstrate how things could be done.

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Thanks @newren, I'll try that out! It was close to working with:

git filter-repo --force --blob-callback '
  import black
  blob.data = black.format_str(blob.data.decode(), mode=black.FileMode()).encode()
'

but I needed to only reformat the python files and couldn't figure out how to limit it. Should be able to put something together with the lint-history commit-callback version!

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Thanks everyone for posting examples here; I put a comment pointing at this issue in the lint-history code so that others will be more likely to find all your examples.

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Adapted your script into #464 that allows to add new or replace files produced from shell commands.

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