ci: check if locale are up to date

.github/workflows/project.yml

@@ -15,6 +15,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+
+      - name: Install dependencies
+        run: |
+          DEBIAN_FRONTEND=noninteractive sudo apt-get update
+          DEBIAN_FRONTEND=noninteractive sudo apt-get install -y gettext
+
       - uses: actions/setup-python@v4
         with:
           python-version: "3.x"

.pre-commit-config.yaml

@@ -104,3 +104,12 @@ repos:
         pass_filenames: false
         language: script
         files: ^legacy
+
+      - id: legacy-locale-update
+        name: legacy-locale-update
+        description: Update legacy locale
+        entry: make
+        args: [-C, legacy/locale, check-update]
+        pass_filenames: false
+        language: system
+        files: ^legacy

legacy/locale/Makefile

@@ -32,6 +32,15 @@ update:
 	find ./locale -name $(PO_FILE) -exec msgmerge $(MSGMERGE_ARGS) "{}" $(PO_FILE) \;
 	rm $(PO_FILE)
 
+update-foreach-commit:
+	git rebase main -x "$(MAKE) -C legacy/locale update"
+
+check-update: update
+	if git status --porcelain -- */LC_MESSAGES/$(PO_FILE) | grep -q '^ M'; then \
+		git --no-pager diff -- */LC_MESSAGES/$(PO_FILE); \
+		exit 1; \
+	fi
+
 %.mo: %.po
 	msgfmt $< -o $@