My prompt for bash

.bash_rc

DEFAULT_COLOR="[00m"
GRAY_COLOR="[37m"
PINK_COLOR="[35m"
GREEN_COLOR="[32m"
ORANGE_COLOR="[33m"
RED_COLOR="[31m"
if [ `id -u` == '0' ]; then
  USER_COLOR=$RED_COLOR
else
  USER_COLOR=$PINK_COLOR
fi

set_color() {
  echo -n $' \e'
  echo -n $1
}

ruby_version() {
  ruby -v | awk '{print $2}'
}

parse_ruby() {
  echo -n $' '
  echo -n `set_color $RED_COLOR`
  echo -n `ruby_version`
  echo -n `set_color $DEFAULT_COLOR`
}

export RAILS_ENV=development
parse_rails_env() {
  echo -n $' '
  echo -n `set_color $PINK_COLOR`
  echo -n ${RAILS_ENV:0:3}
  echo -n `set_color $DEFAULT_COLOR`
}

git_branch() {
  echo -n `git rev-parse --abbrev-ref HEAD`
}

git_remote() {
  echo -n `git config branch.$git_branch.remote`
}

parse_git_upstream_dirty() {
  git_remote=`git_remote $1`
  git_status=`git status 2> /dev/null | tail -n1`
  echo -n `set_color $RED_COLOR`
  if [[ $(git log $git_remote/$1..$1 2> /dev/null) ]]; then
    echo -n $'▵'
  elif [[ ! "$git_status" =~ "nothing to commit" ]]; then
    echo -n $'*'
  fi
  echo -n `set_color $DEFAULT_COLOR`
}

parse_git_branch() {
  if [ -d .git ]; then
    git_branch=`git_branch`
    echo -n $' '
    echo -n `set_color $ORANGE_COLOR`
    echo -n $git_branch
    echo -n `parse_git_upstream_dirty $git_branch`
    echo -n `set_color $DEFAULT_COLOR`
  fi
}

parse_virtualenv() {
  if [ x$VIRTUAL_ENV != x ]; then
    echo -n $' '
    if [[ $VIRTUAL_ENV == *.virtualenvs/* ]]; then
      ENV_NAME=`basename "${VIRTUAL_ENV}"`
    else
      folder=`dirname "${VIRTUAL_ENV}"`
      ENV_NAME=`basename "$folder"`
    fi
    echo -n `set_color $RED_COLOR`
    echo -n $ENV_NAME
    echo -n `set_color $DEFAULT_COLOR`
  fi
}

export BASEPROMPT='\n\e${USER_COLOR}\u\
\e${DEFAULT_COLOR} at \e${ORANGE_COLOR}\h \
\e${GREEN_COLOR}\w\
\e${DEFAULT_COLOR}\
`parse_ruby`\
`parse_git_branch`\
`parse_rails_env`\
`parse_virtualenv`'
export PS1="${BASEPROMPT}
[\t] $ "