_bold=$(tput bold)
_normal=$(tput sgr0)
 
__prompt_command() {
  local vcs base_dir sub_dir ref last_command
  sub_dir() {
    local sub_dir
    sub_dir=$(stat -f "${PWD}")
    sub_dir=${sub_dir#$1}
    echo ${sub_dir#/}
  }
 
 
  # http://github.com/blog/297-dirty-git-state-in-your-prompt
  function parse_git_dirty {
    [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit (working directory clean)" ]] && echo "${_bold}*${_normal}"
  }
  function parse_git_branch {
    git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/\1$(parse_git_dirty)/"
  } 
  
  git_dir() {
    base_dir=$(git rev-parse --show-cdup 2>/dev/null) || return 1
    if [ -n "$base_dir" ]; then
      base_dir=`cd $base_dir; pwd`
    else
      base_dir=$PWD
    fi
    sub_dir=$(git rev-parse --show-prefix)
    sub_dir="/${sub_dir%/}"
    ref=$(parse_git_branch)
    vcs="git"
    alias pull="git pull"
    alias commit="git commit -v -a"
    alias push="commit ; git push"
    alias revert="git checkout"
  }
 
  svn_dir() {
    [ -d ".svn" ] || return 1
    base_dir="."
    while [ -d "$base_dir/../.svn" ]; do base_dir="$base_dir/.."; done
    base_dir=`cd $base_dir; pwd`
    sub_dir="/$(sub_dir "${base_dir}")"
    ref=`svnversion`
    vcs="svn"
    alias pull="svn up"
    alias commit="svn commit"
    alias push="svn ci"
    alias revert="svn revert"
  }
 
  bzr_dir() {
    base_dir=$(bzr root 2>/dev/null) || return 1
    if [ -n "$base_dir" ]; then
      base_dir=`cd $base_dir; pwd`
    else
      base_dir=$PWD
    fi
    sub_dir="/$(sub_dir "${base_dir}")"
    ref=$(bzr revno 2>/dev/null)
    vcs="bzr"
    alias pull="bzr pull"
    alias commit="bzr commit"
    alias push="bzr push"
    alias revert="bzr revert"
  }
  
 
  git_dir || svn_dir || bzr_dir
 
  if [ -n "$vcs" ]; then
    alias st="$vcs status"
    alias d="$vcs diff"
    alias up="pull"
    alias cdb="cd $base_dir"
    base_dir="$(basename "${base_dir}")"
    working_on="$base_dir:"
    __vcs_prefix="($vcs)"
    __vcs_ref="[$ref]"
    __vcs_sub_dir="${sub_dir}"
    __vcs_base_dir="${base_dir/$HOME/~}"
  else
    __vcs_prefix=''
    __vcs_base_dir="${PWD/$HOME/~}"
    __vcs_ref=''
    __vcs_sub_dir=''
    working_on=""
  fi
 
  last_command=$(history 1 | sed -e "s/^[ ]*[0-9]*[ ]*//g")
  __tab_title="$working_on[$last_command]"
  __pretty_pwd="${PWD/$HOME/~}"
}
 
PROMPT_COMMAND=__prompt_command
PS1='\[\e]2;\h::$__pretty_pwd\a\e]1;$__tab_title\a\]\u:$__vcs_prefix\[${_bold}\]${__vcs_base_dir}\[${_normal}\]${__vcs_ref}\[${_bold}\]${__vcs_sub_dir}\[${_normal}\]\$ '
 
# Show the currently running command in the terminal title:
# http://www.davidpashley.com/articles/xterm-titles-with-bash.html
if [ -z "$TM_SUPPORT_PATH"]; then
case $TERM in
  rxvt|*term|xterm-color)
    trap 'echo -e "\e]1;$working_on>$BASH_COMMAND<\007\c"' DEBUG
  ;;
esac
fi