#!/bin/bash
# Copyright 2016 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Run a command in a virtualenv environment.
#
# $ venv_command path/to/venv command [args...]
#
# Note: This is deprecated in favor of running the virtualenv python directly:
#
# $ path/to/venv/bin/python
set -eu

main() {
  if [[ $# -lt 2 ]]; then
    print_help >&2
    exit 1
  fi

  local venv_dir=$1
  shift 1

  activate_venv "$venv_dir"
  exec "$@"
}

print_help() {
  echo "Usage: $0 path/to/venv command [args...]

Run a command in a Python virtualenv environment."
}

activate_venv() {
  local venv_dir=$1
  set +u  # activate script relies on unset variables.
  # shellcheck source=/dev/null
  . "$venv_dir/bin/activate"
  set -u
}

main "$@"