Make include/exclude paths processing faster

[h3adache]

Is there an existing issue for this?

• I have searched the existing issues

Description of the bug

adding include/exclude paths results in a huge slow down.

Steps To Reproduce

• run git-cliff in any repo with a large commit range (>= 100 commits)
• observe that performance should be good.
• add an include-path
• observe a large slowdown.

I observed a huge slowdown generating a changelog for a large commit range and was able to track down the slowness to this block https://github.com/orhun/git-cliff/blob/main/git-cliff-core/src/repo.rs#L63-L91. removing the --include-path option confirmed the cause.

Expected behavior

Don't be slow? :)

Screenshots / Logs

No response

Software information

Repeatable on osx m1 and linux. does not seem to be os specific.

Additional context

No response

[welcome]

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[orhun]

Thanks for the report! I'm guessing it is due to making a lot of git2 calls and matching the glob against the list of files that are changed for each commit. I'm thinking if rayon (parallelizing) might help with regards to making things faster.

[h3adache]

Right that's one way to do it. I wonder if the library that is used to get the git commits already has a way to handle include/exclude paths using git's own built in capability

• exclude

e.g.

git log --oneline -20 -- ':(top)config/**' ':(top)website/**' ':(exclude,top)website/blog/**'

[orhun]

It is probably a good idea to check out git2 to see if it is supported: https://github.com/search?q=repo%3Arust-lang%2Fgit2-rs%20exclude&type=code

[orhun]

I think this should be now solved after #772