ci: Automate releasing

With new make targets and GitHub Actions.

Author: macie

.github/workflows/publish.yml

@@ -0,0 +1,49 @@
+name: Publish
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Run checks
+        run: make
+
+      - run: make dist
+
+      - name: Save build artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: artifacts
+          path: dist/
+          retention-days: 14
+          if-no-files-found: error
+
+  release:
+    needs: build
+
+    name: Release
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions:
+      contents: write
+
+    steps:
+      - name: Extract build artifacts
+        uses: actions/download-artifact@v3
+        with:
+          name: artifacts
+
+      - name: Prepare release
+        uses: ncipollo/release-action@v1
+        with:
+          allowUpdates: true
+          generateReleaseNotes: true
+          artifacts: "*"

Makefile

@@ -6,7 +6,11 @@ TEST=./unittest
 
 # MAIN TARGETS
 
-all:
+all: test check
+
+clean:
+	@echo '# Delete distributed files: rm -rf ./dist' >&2
+	@rm -rf ./dist
 
 info:
 	@printf '# OS info: '
@@ -16,13 +20,39 @@ info:
 	@echo; $(TEST) -v
 
 check: $(LINT)
-	@printf '# Static analysis: $(LINT) unittest tests/*.sh' >&2
+	@printf '# Static analysis: $(LINT) unittest tests/*.sh\n' >&2
 	@$(LINT) unittest tests/*.sh
 
 test:
 	@echo '# Unit tests: $(TEST)' >&2
 	@$(TEST)
 
+dist: unittest
+	@echo '# Create release artifacts in ./dist' >&2
+	@mkdir -p ./dist
+	@cp unittest ./dist/unittest
+
+	@echo '# Create checksum' >&2
+	@cd ./dist; sha256sum unittest >./unittest.sha256sum
+
+release:
+	@echo '# Update local branch' >&2
+	@git pull --rebase
+	@echo '# Create new release tag' >&2
+	@PREV_VER_TAG=$$(git tag | grep "^v" | sed 's/^v//' | sort -t. -k 1,1n -k 2,2n -k 3,3n | tail -1); \
+		CURRENT_VER=$$(./unittest -v 2>&1 | cut -d' ' -f2); \
+		if [ "$$PREV_VER_TAG" = "$$CURRENT_VER" ]; then \
+			echo "ERROR: unittest is in the same version as previous release ($$PREV_VER_TAG). Aborting"; \
+			exit 1; \
+		fi; \
+		printf 'Choose new version number (calver) for release [%s]: ' "$${CURRENT_VER:=23.11}"; \
+		read -r VERSION; \
+		if [ -z "$$VERSION" ]; then \
+			VERSION="$$CURRENT_VER"; \
+		fi; \
+		git tag "v$$VERSION"; \
+		git push --tags
+
 # HELPERS
 
 $(LINT):

README.md

@@ -76,9 +76,12 @@ chmod +x unittest
 
 Use `make` (GNU or BSD):
 
-- `make` - check dependencies
-- `make test` - runs test
-- `make check` - static code analysis
+- `make` - run checks
+- `make test` - run test
+- `make check` - perform static code analysis
+- `make dist` - prepare for distributing
+- `make clean` - remove distributed artifacts
+- `make release` - tag latest commit as a new release
 - `make info` - print system info (useful for debugging).
 
 ## Alternatives