Iterable _allFiles()

in licenses/check_licenses.dart [93:128]

• 36 lines of code
• 22 McCabe index (conditional complexity)

Iterable<File> _allFiles(String workingDirectory, String extension, {required int minimumMatches}) sync* {
  assert(!extension.startsWith('.'), 'Extension argument should not start with a period.');
  final Set<FileSystemEntity> pending = <FileSystemEntity>{Directory(workingDirectory)};
  int matches = 0;
  while (pending.isNotEmpty) {
    final FileSystemEntity entity = pending.first;
    pending.remove(entity);
    if (path.extension(entity.path) == '.tmpl') continue;
    if (entity is File) {
      if (_isGeneratedPluginRegistrant(entity)) continue;
      if (path.basename(entity.path) == 'AppDelegate.h') continue;
      if (path.basename(entity.path) == 'flutter_export_environment.sh') continue;
      if (path.basename(entity.path) == 'gradlew.bat') continue;
      if (path.basename(entity.path) == 'Runner-Bridging-Header.h') continue;
      if (path.basename(entity.path).endsWith('g.dart')) continue;
      if (path.basename(entity.path).endsWith('mocks.mocks.dart')) continue;
      if (path.basename(entity.path).endsWith('pb.dart')) continue;
      if (path.basename(entity.path).endsWith('pbenum.dart')) continue;
      if (path.basename(entity.path).endsWith('pbjson.dart')) continue;
      if (path.basename(entity.path).endsWith('pbserver.dart')) continue;
      if (path.extension(entity.path) == '.$extension') {
        matches += 1;
        yield entity;
      }
    } else if (entity is Directory) {
      if (File(path.join(entity.path, '.dartignore')).existsSync()) continue;
      if (path.basename(entity.path) == '.git') continue;
      if (path.basename(entity.path) == '.gradle') continue;
      if (path.basename(entity.path) == '.dart_tool') continue;
      if (_isPartOfAppTemplate(entity)) continue;
      pending.addAll(entity.listSync());
    }
  }
  assert(matches >= minimumMatches,
      'Expected to find at least $minimumMatches files with extension ".$extension" in "$workingDirectory", but only found $matches.');
}