show git branch and status in prompt

bashrc

#git colors
txtgrn='\033[0;32m' # Green
txtred='\033[0;31m' # Red
txtcyn='\033[0;36m' # Cyan
txtblu='\033[0;34m' # Blue
bold=$(tput bold)
normal=$(tput sgr0)

check_git() {	
	local base_dir sub_dir branch

	if type -p __git_ps1; then
		branch=$(__git_ps1)
	fi
	if [ $branch ]; then
		
		#base_dir
		base_dir=$(git rev-parse --show-cdup 2>/dev/null) || return 1
		if [ -n "$base_dir" ]; then 
			base_dir=`cd $base_dir; pwd`
		else 
			base_dir=$PWD 
		fi
		
		#sub_dir
		sub_dir=$(git rev-parse --show-prefix)
		sub_dir="/${sub_dir%/}"
		
		#status, return status
		get_status(){
			local status status_text added deleted modified untracked
			status=$(git status --porcelain 2>/dev/null)
			status_text=""
		
			added=$(echo "$status" | grep '^A' -s | wc -l)
			deleted=$(echo "$status" | grep '^A' -s | wc -l)
			modified=$((`echo "$status" | grep '^M' -s | wc -l` - ${deleted} ))
			untracked=$(echo "$status" | grep '^??' -s | wc -l)
			
			if [ $added != 0 ]; then status_text="${status_text}${txtgrn}A:${added}${normal}"; fi;
			if [ $deleted != 0 ]; then status_text="${status_text}${txtred} D:${deleted}${normal}"; fi;
			if [ $modified != 0 ]; then status_text="${status_text}${txtcyn} M:${modified}${normal}"; fi;
			if [ $untracked != 0 ]; then status_text="${status_text}${txtblu} ?:${untracked}${normal}"; fi;
			if [ -n "$status_text" ]; then echo -e "(${status_text})"; fi
		}

		base_dir="$(basename "${base_dir}")"
		branch="[${branch/ /}]"
	
		echo -e "${bold}${base_dir}${normal}${branch}${bold}${sub_dir}${normal}>$(get_status)"
	
	else
		echo -e "${bold}`pwd`${normal}"	
	fi

}

export PS1='\[\033[01;32m\]\u@\h\[\033[00m\]:$(check_git)\n$ '