[#58] pre-commit: Add pre-commit and related Makefile targets

Signed-off-by: Aleksey Savchuk <a.savchuk@yadro.com>

.pre-commit-config.yaml

@@ -0,0 +1,24 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.6.0
+    hooks:
+      - id: check-added-large-files
+      - id: check-case-conflict
+      - id: check-executables-have-shebangs
+      - id: check-shebang-scripts-are-executable
+      - id: check-merge-conflict
+      - id: check-json
+      - id: check-xml
+      - id: check-yaml
+      - id: trailing-whitespace
+        args: [--markdown-linebreak-ext=md]
+      - id: end-of-file-fixer
+        exclude: ".svg$"
+
+  - repo: local
+    hooks:
+      - id: make-fmt
+        name: Run make fmt
+        entry: make fmt
+        language: system
+        pass_filenames: false

Makefile

@@ -1,7 +1,10 @@
 #!/usr/bin/make -f
 SHELL=bash
 
-.PHONY: doc
+include help.mk
+
+.PHONY: doc fmt pre-commit unpre-commit pre-commit-run
+
 # Regenerate documentation for proto files:
 doc:
 	@for f in `find . -type f -name '*.proto' -exec dirname {} \; | sort -u `; do \
@@ -12,8 +15,21 @@ doc:
 			--doc_out=proto-docs/ $${f}/*.proto; \
 	done
 
+# Run clang-format
 fmt:
 	@for f in `ls **/*.proto`; do \
 		echo "⇒ Formatting $$f"; \
 		clang-format -i $$f; \
 	done
+
+# Activate pre-commit hooks
+pre-commit:
+	pre-commit install --hook-type pre-commit
+
+# Deactivate pre-commit hooks
+unpre-commit:
+	pre-commit uninstall --hook-type pre-commit
+
+# Run pre-commit hooks
+pre-commit-run:
+	@pre-commit run --all-files --hook-stage manual

help.mk

@@ -0,0 +1,11 @@
+.PHONY: help
+
+# Show this help prompt
+help:
+	@echo '  Usage:'
+	@echo ''
+	@echo '    make <target>'
+	@echo ''
+	@echo '  Targets:'
+	@echo ''
+	@awk '/^#/{ comment = substr($$0,3) } /^[a-zA-Z][a-zA-Z0-9_-]+:/{ print "   ", $$1, comment; comment = "" }' $(MAKEFILE_LIST) | column -t -s ':' | grep -v 'IGNORE' | sort | uniq