# based on http://sebastiancelis.com/2009/nov/16/zsh-prompt-git-users/
unset __CURRENT_GIT_BRANCH
unset __CURRENT_GIT_BRANCH_STATUS
unset __CURRENT_GIT_BRANCH_IS_DIRTY

local git_dir head

git_dir="$(git rev-parse --git-dir 2>/dev/null)"

if [[ -n "$git_dir" ]] ; then
  head=$(cat "$git_dir/HEAD")
  if [[ $head =~ '^ref: ' ]]; then
    __CURRENT_GIT_BRANCH=$(expr "$head" : 'ref: refs/heads/\(.*\)')
  else
    __CURRENT_GIT_BRANCH="no-branch"
  fi
fi

#local st="$(git status 2>/dev/null)"
#if [[ -n "$st" ]]; then
#  local -a arr
#  arr=(${(f)st})
#
#  if [[ $arr[1] =~ 'Not currently on any branch.' ]]; then
#  __CURRENT_GIT_BRANCH='no-branch'
#  else
#  __CURRENT_GIT_BRANCH="${arr[1][(w)4]}";
#  fi
#
#  if [[ $arr[2] =~ 'Your branch is' ]]; then
#    if [[ $arr[2] =~ 'ahead' ]]; then
#    __CURRENT_GIT_BRANCH_STATUS='ahead'
#    elif [[ $arr[2] =~ 'diverged' ]]; then
#    __CURRENT_GIT_BRANCH_STATUS='diverged'
#    else
#    __CURRENT_GIT_BRANCH_STATUS='behind'
#    fi
#  fi
#
#  if [[ ! $st =~ 'nothing to commit' ]]; then
#    __CURRENT_GIT_BRANCH_IS_DIRTY='1'
#  fi
#fi