bash_prompt

# check http://misc.flogisoft.com/bash/tip_colors_and_formatting#colors1 for
# color numbers.

style_normal=$(tput sgr0)
style_name_at_host=$(tput setaf 240)
style_workspace_dir=$(tput bold; tput setaf 77)
style_other_dir=$(tput bold; tput setaf 260)
style_ruby=$(tput setaf 9)
style_node=$(tput setaf 2)
style_python=$(tput setaf 10)
style_ssh_flag="$(tput setab 118; tput setaf 0)  ssh $style_normal "

function print_pre_prompt {
    local color=''
    local dir="$PWD"
    local spacing_correction=-64 # correction for left & right

    if [[ "x$WORKSPACE" != "x" ]]; then
      if [[ $PWD == $WORKSPACE* ]] ; then
	color=$style_workspace_dir
	dir=${PWD/$WORKSPACE\//\(work\) }
      else
	color=$style_other_dir
	dir=${PWD/$HOME/\~}
      fi
    fi

    local ssh_flag=''
    if [ -n "$SSH_CLIENT" ] ; then
      ssh_flag="$style_ssh_flag"
      spacing_correction=$(($spacing_correction - 22))
    fi

    local python=''
    if [[ -z "$PROMPT_NO_PYTHON" ]]; then
      python="$(__pyenv_ps1 2> /dev/null)"
      if [[ "x$python" != "x" ]]; then
        python="(${style_python} ${python}${style_normal}) "
      fi
    fi

    local ruby=''
    if [[ -z "$PROMPT_NO_RUBY" ]]; then
      ruby="$(__rbenv_ps1 2> /dev/null)"
      if [[ "x$ruby" != "x" ]]; then
        ruby="(${style_ruby} ${ruby}${style_normal}) "
      fi
    fi

    local nvm=''
    if [[ -z "$PROMPT_NO_NVM" ]]; then
      nvm="$(__nvm_ps1 2> /dev/null)"
      if [[ "x$nvm" != "x" ]]; then
        nvm="(${style_node} ${nvm}${style_normal})"
      fi
    fi

    local left="${ssh_flag}${style_name_at_host}$USER@$HOSTNAME${style_normal} ${color}$dir${style_normal} $(__git_ps1 ' %s')"
    local right="${python}${ruby}${nvm}"

    if [[ "x$right" == "x" ]]; then
      spacing_correction=0
    fi

    printf "%s%$(($COLUMNS-${#left}-$spacing_correction))s\n" "$left" "$right"
}

GIT_PS1_SHOWDIRTYSTATE=1
GIT_PS1_SHOWSTASHSTATE=1
GIT_PS1_SHOWUNTRACKEDFILES=1
GIT_PS1_SHOWUPSTREAM=1

PROMPT_COMMAND=print_pre_prompt
PS1='$ '