prompt.sh

#!/bin/bash

# Adapted from: https://github.com/addyosmani/dotfiles

# @gf3’s Sexy Bash Prompt, inspired by “Extravagant Zsh Prompt”
# Shamelessly copied from https://github.com/gf3/dotfiles

if [[ $COLORTERM = gnome-* && $TERM = xterm ]] && infocmp gnome-256color >/dev/null 2>&1; then
  export TERM=gnome-256color
elif infocmp xterm-256color >/dev/null 2>&1; then
  export TERM=xterm-256color
fi

if tput setaf 1 &> /dev/null; then
  tput sgr0
  if [[ $(tput colors) -ge 256 ]] 2>/dev/null; then
    MAGENTA=$(tput setaf 9)
    ORANGE=$(tput setaf 172)
    GREEN=$(tput setaf 190)
    PURPLE=$(tput setaf 141)
    WHITE=$(tput setaf 256)
    GREY=$(tput setaf 8)
  else
    MAGENTA=$(tput setaf 5)
    ORANGE=$(tput setaf 4)
    GREEN=$(tput setaf 2)
    PURPLE=$(tput setaf 1)
    WHITE=$(tput setaf 7)
    GREY=$(tput setaf 8)
  fi
  BOLD=$(tput bold)
  RESET=$(tput sgr0)
else
  MAGENTA="\033[1;31m"
  ORANGE="\033[1;33m"
  GREEN="\033[1;32m"
  PURPLE="\033[1;35m"
  WHITE="\033[1;37m"
  GREY="\033[1;90m"
  BOLD=""
  RESET="\033[m"
fi

function parse_git_dirty() {
  [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit (working directory clean)" ]] && echo "*"
}

function parse_git_branch() {
  git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/\1$(parse_git_dirty)/"
}

# iTerm Tab and Title Customization and prompt customization
# http://sage.ucsc.edu/xtal/iterm_tab_customization.html

PS1="\[\e]2;$PWD\[\a\]\[\e]1;\]$(basename "$(dirname "$PWD")")/\W\[\a\]\[$GREY\](\$(date +%H:%M)) \[${BOLD}${MAGENTA}\]\u \[$WHITE\]at \[$ORANGE\]\h \[$WHITE\]in \[$GREEN\]\w\[$WHITE\]\$([[ -n \$(git branch 2> /dev/null) ]] && echo \" on \")\[$PURPLE\]\$(parse_git_branch)\[$WHITE\]\nλ \[$RESET\]"