Show git branch name and dirty state in terminal

.zshrc

parse_git_branch() {
    git_status="$(git status 2> /dev/null)"
    pattern="On branch ([^[:space:]]*)"
    if [[ ! ${git_status} =~ "(working (tree|directory) clean)" ]]; then
        state="*"
    fi
    if [[ ${git_status} =~ ${pattern} ]]; then
      branch=${match[1]}
      branch_cut=${branch:0:35}
      if (( ${#branch} > ${#branch_cut} )); then
          echo "(${branch_cut}...${state})"
      else
          echo "(${branch}${state})"
      fi
    fi
}
setopt PROMPT_SUBST
PROMPT='%{%F{blue}%}%9c%{%F{none}%}$(parse_git_branch)$ '