Bash prompt for displaying git/svn revision info

addToYour.bash_profile

#################################################################
# Here's a bunch of stuff to do prompts that are sensitive to git and svn

WHT='\e[22;37m'
TEAL='\e[22;36m'
BLK='\e[22;30m'
RED='\e[22;31m'
GRN='\e[22;32m'
YEL='\e[22;33m'
BLU='\e[22;34m'
BRED='\e[1;31m'
BGRN='\e[1;32m'
BYEL='\e[1;33m'
BBLU='\e[1;34m'
BWHT='\e[1;37m'
BBLK='\e[1;30m'
BGBLK='\e[40m'
BGBLU='\e[44m'
BGYEL='\e[43m'
BGWHT='\e[47m'
BGRED='\e[41m'
KILLCOLOR='\e[0m'

TIME='\@'
USER='\u'
HOST='\h'
WORKINGDIR='\w'

CLR_FRAME=$BLK
CLR_DIR=$WHT
CLR_GIT=$BYEL
CLR_TIME=$BWHT
CLR_BG=$BGRED
CLR_VENV=$YEL

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

parse_svn_revision() {
    svn info 2>/dev/null | grep "Revision: "| cut -d ' ' -f 2
}

get_revision() {
    svn info >/dev/null 2>&1 && parse_svn_revision || parse_git_branch
}

get_venv() {
    if [ ! -z $VIRTUAL_ENV ]; then
        echo " ($(basename $VIRTUAL_ENV))"
    fi
}


# Only do a color prompt if we actually want color
case "$TERM" in
xterm-256color)
    PS1="$CLR_BG  $CLR_FRAME[$CLR_TIME$TIME$CLR_FRAME][$CLR_DIR$WORKINGDIR$CLR_VENV\$(get_venv)$CLR_FRAME][$CLR_GIT\$(get_revision)$CLR_FRAME]  $KILLCOLOR\n\$ "
    ;;
*)
    PS1="[ $TIME ][ $WORKINGDIR \$(get_venv) ][ \$(get_revision) ] \n\$ "
    ;;
esac

#################################################################

Copy that to your .bash_profile, and you'll get a prompt that looks like this:

  [09:44 AM][~/go/src/github.com/kentquirk/atool2/datastore][addmongo]
$

But with color highlighting. The first part is the time, the second part is your current directory (with an optional virtualenv name if you use python's virtualenv), and the last part is either the current branch name for a git repository, or the current branch number in an svn repository.

You can change colors by messing with the CLR_* variables.