Jörg Thalheim
be78e65b11
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cache should work now and speeds up things
53 lines
1.3 KiB
Bash
Executable File
53 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Run treefmt on every commit and abort if some files have changed.
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#
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# To install, copy this file to .git/hooks/pre-commit and make sure it's
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# executable.
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#
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set -euo pipefail
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# Redirect stdout to stderr
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exec 1>&2
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# Get list of files that will be committed
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mapfile -t commit_files < <(git diff --name-only --cached)
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log() {
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echo "treefmt pre-commit: $*"
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}
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# If the commit has no files, skip everything as there is nothing to format
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if [[ -z ${commit_files+x} ]] || [[ ${#commit_files} = 0 ]]; then
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log "no files to format"
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exit 0
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fi
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# Will be called at the end
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restore_stash() {
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# Store exit status
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local ret=$?
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# Don't fail on error from now on
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set +e
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# Put bash the staged files
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git stash pop -q
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if [[ $ret -gt 0 ]]; then
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log "aborting commit, detected unformatted files"
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fi
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exit "$ret"
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}
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# Stash index and work dir, keeping only the to-be-committed changes in
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# the working directory.
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git stash push --quiet --keep-index --message "treefmt pre-commit"
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# Install the callback to restore the stash on script exit
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trap restore_stash EXIT
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# Run treefmt on the files in the index and record the result.
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nix fmt -- "${commit_files[@]}"
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# Check if there is a diff
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git diff --name-only --exit-code
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