rvm-exec

#!/usr/bin/env bash

export HOME="${HOME%%+(\/)}" # Remove trailing slashes if they exist on HOME

if [[ ${rvm_ignore_rvmrc:-0} -eq 0 ]]; then
  for rvmrc in /etc/rvmrc "$HOME/.rvmrc" ; do
    if [[ -f "$rvmrc" ]] ; then
      if \grep '^\s*rvm .*$' $rvmrc >/dev/null 2>&1 ; then
        printf "\nError: $rvmrc is for rvm settings only.\nrvm CLI may NOT be called from within $rvmrc. \nSkipping the loading of $rvmrc"
        return 1
      else
        source "$rvmrc"
      fi
    fi
  done
fi

if [[ -z "${rvm_path:-}" ]] ; then

  # Set the default sandboxed value.
  # TODO: Alter the variable names to make sense
  if [[ -z "${rvm_user_install:-""}" ]]; then

    if [[ $UID -eq 0 || -n "$rvm_prefix" && "$rvm_prefix" != "$HOME"/* ]]; then
      rvm_user_install=0
    else
      rvm_user_install=1
    fi

  fi

  if [[ -z "${rvm_prefix:-""}" ]] ; then

    if [[ "${rvm_user_install:-0}" = "0" ]] ; then

      rvm_prefix="/usr/local/"

    elif [[ -n "$HOME" ]] ; then

      rvm_prefix="$HOME/."

    else

      echo "No \$rvm_prefix was provided and "
      echo "$(id | \sed -e's/^[^(]*(//' -e 's/).*//') has no \$HOME defined."
      echo "Halting loading of RVM."
      rvm_load_rvm=0
    fi

  fi

  # Fix rvm_prefix changes.
  [[ "${rvm_prefix}" != *[/.] && -d "${rvm_prefix/rvm/scripts}" ]]

  rvm_prefix_needs_trailing_slash="$?"

  if [[ "$rvm_prefix" = "/usr/local" || "$rvm_prefix_needs_trailing_slash" = "0" ]]; then

    rvm_prefix="$rvm_prefix/"

  fi

  if [[ -z "${rvm_path:-""}" ]] ; then
    rvm_path="${rvm_prefix}rvm"
  fi

  export rvm_path="${rvm_path%%+(\/)}"

fi

true ${rvm_scripts_path:="$rvm_path/scripts"}

__rvm_shell_lookup_script() {
  local relative_scripts_dir
  relative_scripts_dir="$(dirname -- "$(dirname -- "$0")")/scripts"
  for directory in "$rvm_scripts_path" "$HOME/.rvm/scripts" "/usr/local/rvm/scripts" "$relative_scripts_dir"; do
    if [[ -d "$directory" && -s "$directory/rvm" ]]; then
      echo "$directory/rvm"
      return
    fi
  done
}

if [[ -n "$1" && ! -f "$1" && -n "$(echo "$1" | \grep -v '^-')" ]]; then
  rvm_shell_ruby_string="$1"
  shift
fi

rvm_shell_rvm_path="$(__rvm_shell_lookup_script)"
if [[ -n "$rvm_shell_rvm_path" ]]; then
  source "$rvm_shell_rvm_path"
  # Setup as expected.
  if [[ -n "$rvm_shell_ruby_string" ]]; then
      rvm "$rvm_shell_ruby_string"
      if [[ "$?" -gt 0 ]]; then
        echo "Error: RVM was unable to use '$rvm_shell_ruby_string'" 1>&2
        exit 1
      fi
  else
    rvm rvmrc load >/dev/null 2>&1
  fi
fi

exec "$@"