class ReplaceOp in Drupal 8

Scaffold operation to copy or symlink from source to destination.

@internal

Hierarchy

• class \Drupal\Composer\Plugin\Scaffold\Operations\AbstractOperation implements OperationInterface
  • class \Drupal\Composer\Plugin\Scaffold\Operations\ReplaceOp

2 files declare their use of ReplaceOp

Fixtures.php in core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Fixtures.php

ReplaceOpTest.php in core/tests/Drupal/Tests/Composer/Plugin/Scaffold/Integration/ReplaceOpTest.php

File

composer/Plugin/Scaffold/Operations/ReplaceOp.php, line 15

Namespace

Drupal\Composer\Plugin\Scaffold\Operations

class ReplaceOp extends AbstractOperation {

  /**
   * Identifies Replace operations.
   */
  const ID = 'replace';

  /**
   * The relative path to the source file.
   *
   * @var \Drupal\Composer\Plugin\Scaffold\ScaffoldFilePath
   */
  protected $source;

  /**
   * Whether to overwrite existing files.
   *
   * @var bool
   */
  protected $overwrite;

  /**
   * Constructs a ReplaceOp.
   *
   * @param \Drupal\Composer\Plugin\Scaffold\ScaffoldFilePath $sourcePath
   *   The relative path to the source file.
   * @param bool $overwrite
   *   Whether to allow this scaffold file to overwrite files already at
   *   the destination. Defaults to TRUE.
   */
  public function __construct(ScaffoldFilePath $sourcePath, $overwrite = TRUE) {
    $this->source = $sourcePath;
    $this->overwrite = $overwrite;
  }

  /**
   * {@inheritdoc}
   */
  protected function generateContents() {
    return file_get_contents($this->source
      ->fullPath());
  }

  /**
   * {@inheritdoc}
   */
  public function process(ScaffoldFilePath $destination, IOInterface $io, ScaffoldOptions $options) {
    $fs = new Filesystem();
    $destination_path = $destination
      ->fullPath();

    // Do nothing if overwrite is 'false' and a file already exists at the
    // destination.
    if ($this->overwrite === FALSE && file_exists($destination_path)) {
      $interpolator = $destination
        ->getInterpolator();
      $io
        ->write($interpolator
        ->interpolate("  - Skip <info>[dest-rel-path]</info> because it already exists and overwrite is <comment>false</comment>."));
      return new ScaffoldResult($destination, FALSE);
    }

    // Get rid of the destination if it exists, and make sure that
    // the directory where it's going to be placed exists.
    $fs
      ->remove($destination_path);
    $fs
      ->ensureDirectoryExists(dirname($destination_path));
    if ($options
      ->symlink()) {
      return $this
        ->symlinkScaffold($destination, $io);
    }
    return $this
      ->copyScaffold($destination, $io);
  }

  /**
   * Copies the scaffold file.
   *
   * @param \Drupal\Composer\Plugin\Scaffold\ScaffoldFilePath $destination
   *   Scaffold file to process.
   * @param \Composer\IO\IOInterface $io
   *   IOInterface to writing to.
   *
   * @return \Drupal\Composer\Plugin\Scaffold\Operations\ScaffoldResult
   *   The scaffold result.
   */
  protected function copyScaffold(ScaffoldFilePath $destination, IOInterface $io) {
    $interpolator = $destination
      ->getInterpolator();
    $this->source
      ->addInterpolationData($interpolator);
    $success = file_put_contents($destination
      ->fullPath(), $this
      ->contents());
    if (!$success) {
      throw new \RuntimeException($interpolator
        ->interpolate("Could not copy source file <info>[src-rel-path]</info> to <info>[dest-rel-path]</info>!"));
    }
    $io
      ->write($interpolator
      ->interpolate("  - Copy <info>[dest-rel-path]</info> from <info>[src-rel-path]</info>"));
    return new ScaffoldResult($destination, $this->overwrite);
  }

  /**
   * Symlinks the scaffold file.
   *
   * @param \Drupal\Composer\Plugin\Scaffold\ScaffoldFilePath $destination
   *   Scaffold file to process.
   * @param \Composer\IO\IOInterface $io
   *   IOInterface to writing to.
   *
   * @return \Drupal\Composer\Plugin\Scaffold\Operations\ScaffoldResult
   *   The scaffold result.
   */
  protected function symlinkScaffold(ScaffoldFilePath $destination, IOInterface $io) {
    $interpolator = $destination
      ->getInterpolator();
    try {
      $fs = new Filesystem();
      $fs
        ->relativeSymlink($this->source
        ->fullPath(), $destination
        ->fullPath());
    } catch (\Exception $e) {
      throw new \RuntimeException($interpolator
        ->interpolate("Could not symlink source file <info>[src-rel-path]</info> to <info>[dest-rel-path]</info>!"), [], $e);
    }
    $io
      ->write($interpolator
      ->interpolate("  - Link <info>[dest-rel-path]</info> from <info>[src-rel-path]</info>"));
    return new ScaffoldResult($destination, $this->overwrite);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
AbstractOperation::$contents	protected	property	Cached contents of scaffold file to be written to disk.
AbstractOperation::contents	final public	function	Returns the exact data that will be written to the scaffold files. Overrides OperationInterface::contents
AbstractOperation::scaffoldAtNewLocation	public	function	Determines what to do if operation is used without a previous operation. Overrides OperationInterface::scaffoldAtNewLocation	1
AbstractOperation::scaffoldOverExistingTarget	public	function	Determines what to do if operation is used at same path as a previous op. Overrides OperationInterface::scaffoldOverExistingTarget	1
ReplaceOp::$overwrite	protected	property	Whether to overwrite existing files.
ReplaceOp::$source	protected	property	The relative path to the source file.
ReplaceOp::copyScaffold	protected	function	Copies the scaffold file.
ReplaceOp::generateContents	protected	function	Load the scaffold contents or otherwise generate what is needed. Overrides AbstractOperation::generateContents
ReplaceOp::ID		constant	Identifies Replace operations.
ReplaceOp::process	public	function	Process this scaffold operation. Overrides OperationInterface::process
ReplaceOp::symlinkScaffold	protected	function	Symlinks the scaffold file.
ReplaceOp::__construct	public	function	Constructs a ReplaceOp.