#
# Displays the path to the Ruby application root directory.
#
# Authors:
#   Sorin Ionescu <sorin.ionescu@gmail.com>
#

local root_dir="$PWD"

while [[ "$root_dir" != '/' ]]; do
  if [[ -f "$root_dir/Gemfile" ]]; then
    print "$root_dir"
    break
  fi
  root_dir="$root_dir:h"
done

return 1