.bash_prompt

#!/bin/bash
# @gf3’s Sexy Bash Prompt, inspired by “Extravagant Zsh Prompt”
# Shamelessly copied from https://github.com/gf3/dotfiles
# Screenshot: http://i.imgur.com/s0Blh.png

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 [[ $(tput colors) -ge 256 ]] 2>/dev/null; then
		RED=$(tput setaf 1)
		MAGENTA=$(tput setaf 9)
		ORANGE=$(tput setaf 172)
		GREEN=$(tput setaf 190)
		PURPLE=$(tput setaf 141)
		WHITE=$(tput setaf 0)
	else
		RED=$(tput setaf 1)
		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
	RED="\033[0;31m"
	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

export RED
export MAGENTA
export ORANGE
export GREEN
export PURPLE
export WHITE
export BOLD
export RESET

function parse_git_dirty() {
	[[ $(git status 2> /dev/null | tail -n1) != *"working directory clean"* ]] && echo "*"
}

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

function parse_svn_branch() {
	URL=`svn info 2>/dev/null | grep 'URL: '` || return
	if [[ "$URL" == *trunk* ]]; then
		echo trunk
	elif [[ "$URL" =~ .*/branches/([^/]+)/?.* ]]; then
		echo ${BASH_REMATCH[1]}
	fi
}

function parse_branch() {
	GIT=$(parse_git_branch)
	if [[ -n "$GIT" ]]; then
		echo $GIT
		return
	fi
	echo $(parse_svn_branch)
}

function is_versioned() {
	[[ -n $(git branch 2>/dev/null) ]] && echo 1
	[[ -n $(svn info 2>/dev/null) ]] && echo 1
}

NAME="\$([[ \$? != 0 ]] && echo '\[$RED\]' || echo '\[${BOLD}${MAGENTA}\]' )\u\[${BOLD}${WHITE}\]"
HOST="\[$ORANGE\]\h\[$WHITE\]"
DIR="\[$GREEN\]\w\[$WHITE\]"
VCS="\$([[ -n \$(is_versioned) ]] && echo ' on ')\[$PURPLE\]\$(parse_branch)\[$WHITE\]"

export PS1="$NAME@$HOST:$DIR$VCS\n\$ \[$RESET\]"
export PS2="\[$ORANGE\]→ \[$RESET\]"