90 lines
2.8 KiB
Bash
Executable File
90 lines
2.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -u
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set -e
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ref_name=$1
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old_rev=$2
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new_rev=$3
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# Here you can use whatever formatter you like
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# and set up the error (or success) output as you wish
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format() {
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local my_work_tree=$1
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pushd $my_work_tree >/dev/null
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# briefly allow non-zero exit status
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set +e
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local my_diffs=$(2>&1 /usr/local/bin/prettier './**/*.{js,css,html,json,md}' --list-different | grep -v 'No matching files')
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set -e
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# Show a friendly error message to the git user downstream (if there are files to fix)
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if [ -n "$my_diffs" ]; then
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>&2 echo ""
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>&2 echo "Please run prettier on the following files (and double check your .prettierrc):"
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echo "$my_diffs" | while read my_word; do
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>&2 echo " $my_word"
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done
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>&2 echo ""
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>&2 echo "Example:"
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>&2 echo " npm install -g prettier"
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>&2 echo " prettier './**/*.{js,css,html,json,md}' --write"
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>&2 echo ""
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fi
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popd >/dev/null
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# This is the "return" value
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echo $my_diffs
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}
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# This is all pretty generic - just checking out files to lint/format and running said formatter
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case "${ref_name}" in
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refs/heads/*)
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# match empty commit 0000000000000000000000000000000000000000
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# all deletes should be successful (no files to check against)
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if [ "$(expr "${new_rev}" : '0*$')" -ne 0 ]; then
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exit 0
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fi
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# We don't want a race condition if multiple people push while a check is in progress
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# For this reason we first checkout all of the files in HEAD and the copy over the changed files.
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# We also need to remove any deleted files.
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#
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# ex: /tmp/git-work-tree.abc123xyz
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my_work_tree=$(mktemp -d -t git-work-tree.XXXXXXXX) 2>/dev/null
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if [ "$(expr "${old_rev}" : '0*$')" -ne 0 ]; then
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# Ignore "fatal: You are on a branch yet to be born"
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set +e
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fi
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git --work-tree="${my_work_tree}" --git-dir="." checkout "${ref_name}" -f >/dev/null
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my_changes=$(git --work-tree="${my_work_tree}" --git-dir="." diff --name-status HEAD $new_rev)
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if [ -n "$(echo "$my_changes" | grep -e "^A")" ]; then
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echo "$my_changes" | grep -e "^A" | cut -f 2 | \
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xargs git --work-tree="${my_work_tree}" --git-dir="." checkout $new_rev --
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fi
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if [ -n "$(echo "$my_changes" | grep -e "^M")" ]; then
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echo "$my_changes" | grep -e "^M" | cut -f 2 | \
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xargs git --work-tree="${my_work_tree}" --git-dir="." checkout $new_rev --
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fi
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if [ -n "$(echo "$my_changes" | grep -e "^D")" ]; then
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echo "$my_changes" | grep -e "^D" | cut -f 2 | \
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xargs git --work-tree="${my_work_tree}" --git-dir="." rm -rf -- >/dev/null
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fi
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# Now we run the formatter, do some cleanup, and error out if needed
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my_failure=$(format $my_work_tree)
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rm -rf "${my_work_tree}"
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if [ -n "$my_failure" ]; then
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exit 1
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fi
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;;
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refs/tags/*)
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# allowing tags to be made regardless of formatting (such as old versions)
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exit 0
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;;
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*)
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# allowing all other things (not sure what they are though, TBH)
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exit 0
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;;
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esac
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