get the branch name in the PS1

gistfile1.txt

parse_git_branch ()
{
  if git rev-parse --git-dir >/dev/null 2>&1
  then
    gitver=$(git branch 2>/dev/null| sed -n '/^\*/s/^\* //p')
  else
    return 0
  fi
  echo -e ":$(branch_color)$gitver${c_plain}"
}

branch_color ()
{
  if git rev-parse --git-dir >/dev/null 2>&1
  then
    color=""
    if git diff --quiet 2>/dev/null >&2
    then
      color="${c_clean}"
    else
      color=${c_dirty}
    fi
  else
    return 0
  fi
  echo -ne $color
}


PS1='\[${c_wdir}\]\W\[${c_plain}\]$(parse_git_branch) $ '