bash_prompt

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

default_username='adam'

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)
    else
        MAGENTA=$(tput setaf 5)
        ORANGE=$(tput setaf 4)
        GREEN=$(tput setaf 2)
        PURPLE=$(tput setaf 1)
        WHITE=$(tput setaf 7)
    fi
    BOLD=$(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"
    BOLD=""
    RESET="\033[m"
fi

function git_info() {
    # check if we're in a git repo
    git rev-parse --is-inside-work-tree &>/dev/null || return

    # quickest check for what branch we're on
    branch=$(git symbolic-ref -q HEAD | sed -e 's|^refs/heads/||')

    # check if it's dirty (via github.com/sindresorhus/pure)
    dirty=$(git diff --quiet --ignore-submodules HEAD &>/dev/null; [ $? -eq 1 ]&& echo -e "*")

    echo $WHITE" on "$PURPLE$branch$dirty
}

# Only show username/host if not default
function usernamehost() {
    if [ $USER != $default_username ]; then echo "${MAGENTA}$USER ${WHITE}at ${ORANGE}$HOSTNAME ${WHITE}in "; fi
}

PS1="\[\e]2;$PWD\[\a\]\[\e]1;\]$(basename "$(dirname "$PWD")")/\W\[\a\]${BOLD}\$(usernamehost)\[$GREEN\]\w\$(git_info)\[$WHITE\]\n$  \[$RESET\]"