DevOps-Bash-tools/git/precommit_run_changed_files.sh

#!/usr/bin/env bash
#  vim:ts=4:sts=4:sw=4:et
#
#  Author: Hari Sekhon
#  Date: 2024-08-16 22:08:31 +0200 (Fri, 16 Aug 2024)
#
#  https///github.com/HariSekhon/DevOps-Bash-tools
#
#  License: see accompanying Hari Sekhon LICENSE file
#
#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
#
#  https://www.linkedin.com/in/HariSekhon
#

set -euo pipefail
[ -n "${DEBUG:-}" ] && set -x
srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

# shellcheck disable=SC1090,SC1091
. "$srcdir/lib/git.sh"

# shellcheck disable=SC2034,SC2154
usage_description="
Runs pre-commit on all files changed on the current branch vs the default branch

Useful to reproduce pre-commit checks that are failing in pull requests to get your PRs to pass

WARNING: \$HOME/.mdlrc appears to be cumulative and will hide errors in git checkouts with local .mdlrc
         you will only realize this when your Pull Request checks fail on GitHub, so you may need to edit
         or delete your \$HOME/.mdlrc to stop it masking your local pre-commit testing

Requires git and pre-commit to be installed and must be run on the feature branch in the git repo checkout
"

# used by usage() in lib/utils.sh
# shellcheck disable=SC2034
usage_args="[<pre-commit args>]"

help_usage "$@"

#num_args 0 "$@"

git_root="$(git_root)"

echo "cd $git_root"
cd "$git_root"

default_branch="$(git symbolic-ref refs/remotes/origin/HEAD | sed 's|.*/||')"

changed_files=()
while IFS= read -r filename; do
    changed_files+=("$filename")
done < <(git diff --name-only "$default_branch"..)

opts=(--show-diff-on-failure --color=auto --files)

echo
echo "pre-commit run ${opts[*]} ${changed_files[*]} $*"
echo
pre-commit run "${opts[@]}" "${changed_files[@]}" "$@"