PROMPT_COMMAND for SVN repo information (from mixed sources and additional tweaking)

bashrc_svn

# Include SVN info in prompt, if possible
PROMPT_COMMAND=svn_prompt_cmd

svn_prompt_cmd() {

# The various escape codes that we can use to color our prompt.
        RED="\e[0;31m"
      GREEN="\e[0;32m"
      BROWN="\e[0;33m"
       BLUE="\e[0;34m"
     PURPLE="\e[0;35m"
       CYAN="\e[0;36m"
 LIGHT_BLUE="\e[1;34m"
  LIGHT_RED="\e[1;31m"
LIGHT_GREEN="\e[1;32m"
      WHITE="\e[1;37m"
 LIGHT_GRAY="\e[0;37m"
     YELLOW="\e[1;33m"
 COLOR_NONE="\e[00m"

  if [[ -d ".svn" ]] ; then
    local info rev url ver stat rrev
    info=$(LC_MESSAGES=C svn info 2>/dev/null)
    rev=$(echo "${info}" | awk '/^Revision: [0-9]+/{print $2}')
    url=$(echo "${info}" | awk '/^URL: .*/{print $2}')

    case $(echo ${url} | egrep -o "/(trunk|branches|tags)\>" | tr -d "/") in
          trunk) ver=${CYAN}trunk
                 ;;
          tags)  ver=${YELLOW}tag:$(echo ${url} | grep -o "/tags.*" | awk -F/ '{print $3}')
                 ;;
          branches) ver=${GREEN}branch:$(echo ${url} | grep -o "/branches.*" | awk -F/ '{print $3}')
                 ;;
        esac

        stat=$(LC_MESSAGES=C svn status -u 2>/dev/null | tail -3)                                       # SVN remote update state
        rrev=$(echo "$stat" | grep "^Status against revision" | grep -o "[0-9]\+$")     # SVN remote revision head

        # Establish color of rev field based on local/remote freshness of the checkout:
        #        light red: there are changes in the remote repo against local checkout
        #   light blue: the local checkout is behind the remote repo
        #   purple dot: there are uncommitted changes in local checkout
        [ $(echo "$stat" | wc -l) -gt 1 ]         && rev="${LIGHT_RED}$rev" || \
                      [ "$rrev" != "$rev" ]       && rev="${LIGHT_BLUE}$rev"
        [ $(svn status 2>/dev/null | head -1 | wc -l) -gt 0 ] && rev="${rev}${PURPLE}*"

    echo -e "[${BROWN}svn:r${rev}${COLOR_NONE} @ ${ver}${COLOR_NONE}]"
  fi

}