Gitpath

gitpath.zsh

# TODO: should this have a --flag for dispatch to system/global/local? Currently only supports local.

function gitpath() {
  local git_dir output_path

  if [[ -z "$GIT_DIR" ]]; then
    read -r -d '' git_dir < <(git rev-parse --show-toplevel)
    git_dir="${git_dir}/.git"
  else
    git_dir="$GIT_DIR"
  fi

  if [[ -z "$git_dir" ]]; then
    # Rely on Git to print its own error message to stderr, and use its exit code
    return $?
  fi

  if [[ -n "$1" ]]; then
    case "$1" in
      attr|attrib|attribute|attributes)
        output_path="info/attributes" ;;
      config)
        # also .gitconfig and $XDG_CONFIG_HOME/git/config
        output_path="config" ;;
      desc|descr|description)
        # Used for 3rd party tools
        # https://git-scm.com/docs/gitweb#Documentation/gitweb.txt-descriptionorcodegitwebdescriptioncode
        output_path="description" ;;
      excl|exclude|ign|ignore)
        # also .gitignore and $XDG_CONFIG_HOME/git/ignore
      hook|hooks)
        output_path="hooks" ;;
        output_path="info/exclude" ;;
      info)
        output_path="info" ;;
      *)
        print -u2 -- "Unknown Git directory: $1"
        return 1
    esac
    output_path="${git_dir%/}/${output_path}"
  else
    output_path="${git_dir}"
  fi

  echo "$output_path"
}

gitpath "$@"