function in_svn() {
  if $(svn info >/dev/null 2>&1); then
    return 0
  fi
  return 1
}

function get_svn_project_and_branch() {
  svn info 2> /dev/null | \
    awk -F/ \
    '/^URL:/ { \
      for (i=0; i<=NF; i++) { \
        if ($i == "branches" || $i == "tags" ) { \
          printf "%s:%s", $(i-1), $(i+1); \
          break;\
        }; \
        if ($i == "trunk") { printf "%s:trunk", $(i-1); break; } \
      } \
    }'
}

function svn_prompt() {
  if in_svn; then
    echo "($(get_svn_project_and_branch))"
  fi
}

export PS1="\$(svn_prompt)\n[\\u:\\W]$ "