utils.gradle

// Copyright 2019 The Nomulus Authors. All Rights Reserved.
//
// 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.

rootProject.ext {

  // Executes an arbitrary shell command in bash and returns all output
  // to stdout as a string. This method allows pipes in shell command.
  execInBash = { shellCommand, bashWorkingDir ->
    return new ByteArrayOutputStream().withStream { os ->
      exec {
        workingDir bashWorkingDir
        commandLine 'bash', '-c', "${shellCommand}"
        standardOutput os
      }.assertNormalExitValue()
      return os
    }.toString().trim()
  }

  findOptionalProperty = { propertyName ->
    return java.util.Optional.ofNullable(project.findProperty(propertyName))
  }
}