.gitrc

#!/bin/bash
# Configure colors for git prompt, if available.
if [ "$color_prompt" = yes ]; then
        c_reset='\[\e[0m\]'
        c_user='\[\e[1;33m\]'
        c_path='\[\e[1;34m\]'
	c_git_pending='\[\e[1;36m\]'
        c_git_clean='\[\e[0;36m\]'
        c_git_staged='\[\e[1;35m\]'
        c_git_dirty='\[\e[1;31m\]'
	prompt_use_colors=yes
else
        c_reset=
        c_user=
        c_path=
	c_git_pending=
        c_git_clean=
        c_git_staged=
        c_git_dirty=
	prompt_use_colors=no
fi

orig_user=$(id -u)
number_re='^[0-9]+$';

if [[ -z $prompt_host ]]; then
	prompt_host="\h"
fi

# Function to assemble the Git part of our prompt.
git_prompt ()
{
        if ! git rev-parse --git-dir > /dev/null 2>&1; then
                return 0
        fi
        git_branch=$(git rev-parse --abbrev-ref HEAD 2>/dev/null)

	if [ "$prompt_use_colors" = yes ]; then
		if git diff --quiet 2>/dev/null >&2; then
			staged=$(git status --porcelain 2>/dev/null| grep "^[MA]" | wc -l);
		        if ! [ $staged -eq 0 ]; then
		                git_color="$c_git_staged";
		        else
				if ! [ $SUDO_UID ]; then
					update_interval=$(git config --get prompt.updateinterval);
					if ! [ -z "$update_interval" ]; then
						if ! [[ $update_interval =~ $number_re ]]; then
							echo "[ ${c_git_dirty}Bad value <$update_interval> in prompt.updateinterval (want a positive integer)${c_reset} ]";
							return;
						elif [ $update_interval -le 0 ]; then
							echo "[ ${c_git_dirty}Bad value <$update_interval> in prompt.updateinterval (want a positive integer)${c_reset} ]";
							return;
						fi
						last_up=$(git config --local --get prompt.lastupdate);
						if [ -z "$last_up" ]; then
							last_up=0;
						fi
						if [ $(expr $(date +%s) - $last_up ) -gt $update_interval ]; then
							git remote update 2>/dev/null 1>&2;
							git config --local prompt.lastupdate $(date +%s);
						fi
					fi
				fi
				pending=$(expr $(git log --oneline @{u}.. 2>/dev/null | wc -l) + $(git log --oneline ..@{u} 2>/dev/null | wc -l));
				if ! [ $pending -eq 0 ]; then
					git_color="$c_git_pending";
				else
		                	git_color="$c_git_clean";
				fi
		        fi
		else
		        git_color="$c_git_dirty";
		fi
	fi

        echo " [$git_color$git_branch${c_reset}]"
}

gitrc_refresh_timeout() {
	timeout=$1
	re='^[0-9]+$'
	if [ -z "$timeout" ]
	then
		timeout="off"
	fi
	if [ "$timeout" = "off" ]
	then
		echo "Turn autoupdate off"
		git config --local --unset prompt.updateinterval
	elif [[ $timeout =~ $re ]]
	then
		echo "Set autoupdate to $timeout seconds"
		git config --local prompt.updateinterval $timeout
	else
		echo "Invalid parameter $timeout"
	fi
}

if [ $(whoami) = "root" ]; then
	prompt_symbol="#"
else
	prompt_symbol="$"
fi

if [ "$color_prompt" = yes ]; then
    PROMPT_COMMAND='PS1="${debian_chroot:+($debian_chroot)}${c_user}\u${c_reset}@${c_user}${prompt_host}${c_reset}:${c_path}\w${c_reset}$(git_prompt)${prompt_symbol} "'
else
    PROMPT_COMMAND='PS1="${debian_chroot:+($debian_chroot)}\u@${prompt_host}:\w$(git_prompt)${prompt_symbol} "'
fi