copyRecursively method

Future<Null> copyRecursively(Directory target)

Copies all of the files in this directory to target.

This is similar to cp -R <from> <to>:

• Symlinks are supported.
• Existing files are over-written, if any.
• If target is within this, throws ArgumentError.
• If this and target are canonically the same, no operation occurs.

Returns a future that completes when complete.

Implementation

Future<Null> copyRecursively(Directory target) async {
  if (path_helper.canonicalize(path) ==
      path_helper.canonicalize(target.path)) {
    return;
  }
  if (path_helper.isWithin(path, target.path)) {
    throw ArgumentError('Cannot copy $path to ${target.path}');
  }
  await target.create(recursive: true);
  await for (final file in list(recursive: true)) {
    final copyTo = path_helper.join(
        target.path, path_helper.relative(file.path, from: path));
    if (file is Directory) {
      await Directory(copyTo).create(recursive: true);
    } else if (file is File) {
      await File(file.path).copy(copyTo);
    } else if (file is Link) {
      await Link(copyTo).create(await file.target(), recursive: true);
    }
  }
}