Display current git branch in bash prompt

Display current git branch in bash prompt

# Display current git branch in bash prompt
c_red=`tput setaf 1`
c_green=`tput setaf 2`
c_blue=`tput setaf 4`
c_sgr0=`tput sgr0`

parse_git_branch ()
{
    if git rev-parse --git-dir >/dev/null 2>&1
    then
        gitver=$(git branch 2>/dev/null| sed -n '/^\*/s/^\* //p')
        if git diff --quiet 2>/dev/null >&2 
        then
            gitver="${c_green} [${gitver}]${c_sgr0}"
        else
            gitver="${c_red} ![${gitver}]${c_sgr0}"
        fi
    else
        return 0
    fi
    echo -en "${gitver}"
}

if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\t:\[\033[01;32m\]\h\[\033[00m\]:\[\033[01;34m\]\w\[\e[00m\]:$(parse_git_branch)\[\033[00m\]\n\$ '
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\t \w\[\e[00m\]\$ '
fi
unset color_prompt force_color_prompt