whereami

#!/bin/bash

while getopts "c" opt; do
  case "$opt" in
    c)
      color=1
      ;;
    ?)
      exit 1
  esac
done

if [[ $color ]]; then
  Reset="\e[0m"

  Bold="\e[1m"
  Dim="\e[2m"
  Underline="\e[4m"
  Reverse="\e[7m"

  Default="\e[39m"
  Black="\e[30m"
  Red="\e[31m"
  Green="\e[32m"
  Yellow="\e[33m"
  Blue="\e[34m"
  Magenta="\e[35m"
  Cyan="\e[36m"
  White="\e[37m"
fi

in_git="$(git rev-parse --is-inside-work-tree 2>/dev/null)"
git_exit="$?"
svn_info="$(svn info 2>/dev/null)"
svn_exit="$?"
if [[ $git_exit -eq 0 && $in_git == true ]]; then
  # In a git repo.
  if read rem_rev loc_rev < <(git rev-list --count --left-right @{upstream}...HEAD 2>/dev/null); then
    if [[ $rem_rev -gt 0 && $loc_rev -gt 0 ]]; then
      upstream="<>" # diverged from upstream
    elif [[ $rem_rev -gt 0 ]]; then
      upstream="<" # behind upstream
    elif [[ $loc_rev -gt 0 ]]; then
      upstream=">" # ahead of upstream
    else
      upstream="=" # equal with upstream
    fi
  else
    upstream="" # no upstream
  fi

  if git diff-index --quiet HEAD -- &>/dev/null; then
    clean=""
  else
    clean="*"
  fi

  wc_root="$(git rev-parse --show-toplevel 2>/dev/null)"
  echo -e "$Black$(dirname "$wc_root")/$Blue$Bold$(basename "$wc_root") [$(git rev-parse --abbrev-ref HEAD 2>/dev/null)$upstream$clean]$Reset $Cyan$Reverse/$(git rev-parse --show-prefix 2>/dev/null)$Reset"
elif [[ $svn_exit -eq 0 ]]; then
  # In a svn repo.

  # This strange sequence is necessary because svn resolves symlinks when reporting wc_root. So
  # we resolve symlinks in PWD, then remove the wc_root from it to get the path relative to
  # wc_root. Finally, we remove rel_cur_dir from PWD to get wc_root without symlinks resolved.
  wc_root="$(echo "$svn_info" | sed -n 's/Working Copy Root Path: \(.*\)/\1/p')"
  abs_cur_dir="$(readlink -e $PWD)"
  rel_cur_dir="${abs_cur_dir#$wc_root}"
  wc_root="${PWD%$rel_cur_dir}"
  [[ -z $rel_cur_dir ]] && rel_cur_dir=/ # Force the rel_cur_dir to be a slash in the root diretory.
  wc_rel_url="$(echo "$svn_info" | sed -n 's/Relative URL: \(.*\)/\1/p')"
  wc_rel_url="${wc_rel_url%$rel_cur_dir}"
  echo -e "$Black$(dirname "$wc_root")/$Magenta$Bold$(basename "$wc_root") [$wc_rel_url]$Reset $Cyan$Reverse$rel_cur_dir$Reset"
else
  echo -e "$Cyan$Reverse$PWD$Reset"
fi