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June 7, 2021 13:45
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lein-check-staged-cljx-files.sh
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| #!/usr/bin/env bash | |
| set -eu -o pipefail | |
| echo "Running pre-commit hook, it may take a while..." | |
| # Pre-commit scripts are run from the root directory of the git | |
| # repository. In our case, Leiningen project root is actually in this | |
| # subdirectory inside the git repository root directory. | |
| LEIN_PROJECT_ROOT="app" | |
| staged_files=$(mktemp) | |
| temporary_dir=$(mktemp -d --tmpdir="${LEIN_PROJECT_ROOT}") | |
| cljx_files=$(mktemp) | |
| # Prepare clean up for normal or abnormal termination of the script | |
| # shellcheck disable=SC2064 | |
| trap "rm -rf ${staged_files} ${temporary_dir} ${cljx_files}" EXIT ERR | |
| # Get path of files staged in the index, relative to repository root | |
| # paths are separated by NUL (\0) character, to avoid problems | |
| # with spaces, tags, etc in the names | |
| git diff-index --cached --name-only -z HEAD > "${staged_files}" | |
| # Exit early (successfully) if there are no staged files. | |
| if [[ ! ( -s "${staged_files}" ) ]] | |
| then | |
| exit 0 | |
| fi | |
| # Checkout out a copy of them in a temporary directory, inside the | |
| # Leiningen project root directory. | |
| git checkout-index --prefix="${temporary_dir}"/ -z --stdin -- < "${staged_files}" | |
| # Filter the ones having a .clj/.cljs/.cljc extension | |
| # and print out the temporary filename prefixed with "../", as we'll | |
| # refer to them later from the "app/" subdirectory | |
| cljx_files_dir="../${temporary_dir}/" | |
| # shellcheck disable=SC2016 | |
| env cljx_files_dir="${cljx_files_dir}" awk < "${staged_files}" > "${cljx_files}" ' | |
| BEGIN { FS= "\t"; RS = "\0" } | |
| /\.clj[cs]*$/ {print ENVIRON["cljx_files_dir"] $1}' | |
| # Now run `lein cljfmt check` and `clj-kondo` check on those files, if there are any | |
| if [[ -s "${cljx_files}" ]] | |
| then | |
| # We need to run the tools from the root directory of the Leiningen project. | |
| ( | |
| cd "${LEIN_PROJECT_ROOT}"; | |
| echo "Running xargs lein update-in ':cljfmt' merge '{:ansi? false}' -- cljfmt check < ${cljx_files}"; | |
| xargs lein update-in ':cljfmt' merge '{:ansi? false}' -- cljfmt check < "${cljx_files}"; | |
| echo "Running clj-kondo --parallel --lint ${cljx_files_dir}"; | |
| clj-kondo --parallel --lint "${cljx_files_dir}" | |
| ) | |
| fi | |
| exit 0 |
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