Git pre-commit hook for linting YAML files

pre-commit

#!/usr/bin/env bash

current_branch=$(git symbolic-ref -q HEAD | sed -e 's|^refs/heads/||')

if [[ $current_branch = 'master' ]]; then
	printf 'Direct commits to the master branch are not allowed.\n'
	exit 1
fi

if command -v yamllint > /dev/null; then
	while IFS= read -r -d '' file; do
		if [[ $file =~ \.(yaml|yml)$ ]]; then
			if ! yamllint <(git show ":${file}") > /dev/null; then
				printf 'YAML syntax check failed for file: %s\n' "$file"
				exit 1
			fi
		fi
	done < <(git diff --cached --name-only --diff-filter=ACM -z)
fi

yamllint.config

---

extends: default

rules:
  braces:
    max-spaces-inside: 1
  line-length: disable
  indentation:
    indent-sequences: consistent