# Determine whether or not we should support color.
case "$TERM" in
    xterm-color|*-256color|rxvt-unicode) color_prompt=yes;;
esac

# Emit the current date and time.
__prompt_date() {
    echo "$(date '+%D %r')"
}

# Define a function that extracts the current git branch, if available.
__git_branch() {
    ref="$(git symbolic-ref HEAD 2>/dev/null | cut -d'/' -f3)"
    if [ ! -z $ref ]; then
        echo " $ref"
    else
        echo ""
    fi
}

# Assign the prompt.
if [ "$color_prompt" = yes ]; then
    PS1='\[\033[01;32m\]\u:\[\033[01;34m\]\w\[\033[00m\]\[\033[01;31m\]$(__git_branch)\[\033[00m\] $(__prompt_date)\n\$ '
else
    PS1='\u:\w$(__git_branch) $(__prompt_date)\n\$ '
fi

unset color_prompt