// Copyright (C) 2017 The Bazel Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * Define a step "maybeDir" that executes its body under the directory passed as argument,
 * except if that argument is empty (in which case the body is executed directly).
 */
def call(String directory, Closure body) {
  if (directory.isEmpty()) {
    body()
  } else {
    dir(directory) {
      body()
    }
  }
}