rowbot/pre-commit

#!/usr/bin/env bash

has() {
  if (( $# )); then
    hash "$1" 2>/dev/null
  fi
}

is_a() {
  if (( $# > 1 )); then
    head -1 "$1" | grep -qE '^#!.*'"$2"'$'
  fi
}

find . -name .DS_Store -exec rm -f -- {} +

git status -zu | while read -rd '' xy filename; do
  if [[ $xy = "??" || $xy = D ]]; then
    continue
  fi

  if [[ $filename = *.sh ]] || is_a "$filename" bash; then
    if has shellcheck && ! shellcheck -s bash "$filename"; then
    	exit 1
    fi
  fi
done