64 lines
1.7 KiB
Dart
64 lines
1.7 KiB
Dart
import 'package:xml/xml.dart' as xml;
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import 'package:youtube_explode_dart/src/retry.dart';
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import 'package:youtube_explode_dart/src/reverse_engineering/reverse_engineering.dart';
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class ClosedCaptionTrackResponse {
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final xml.XmlDocument _root;
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ClosedCaptionTrackResponse(this._root);
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Iterable<ClosedCaption> get closedCaptions =>
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_root.findElements('p').map((e) => ClosedCaption._(e));
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ClosedCaptionTrackResponse.parse(String raw) : _root = xml.parse(raw);
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static Future<ClosedCaptionTrackResponse> get(
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YoutubeHttpClient httpClient, String url) {
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var formatUrl = _setQueryParameters(url, {'format': '3'});
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return retry(() async {
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var raw = await httpClient.getString(formatUrl);
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return ClosedCaptionTrackResponse.parse(raw);
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});
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}
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static Uri _setQueryParameters(String url, Map<String, String> parameters) {
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var uri = Uri.parse(url);
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var query = Map<String, String>.from(uri.queryParameters);
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query.addAll(parameters);
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return uri.replace(queryParameters: query);
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}
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}
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class ClosedCaption {
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final xml.XmlElement _root;
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ClosedCaption._(this._root);
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String get text => _root.toXmlString();
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Duration get offset =>
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Duration(milliseconds: int.parse(_root.getAttribute('t') ?? 0));
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Duration get duration =>
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Duration(milliseconds: int.parse(_root.getAttribute('d') ?? 0));
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Duration get end => offset + duration;
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void getParts() {
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_root.findElements('s').map((e) => ClosedCaptionPart._(e));
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}
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}
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class ClosedCaptionPart {
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final xml.XmlElement _root;
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ClosedCaptionPart._(this._root);
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String get text => _root.toXmlString();
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Duration get offset =>
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Duration(milliseconds: int.parse(_root.getAttribute('t') ?? 0));
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}
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