142 lines
4.3 KiB
Dart
142 lines
4.3 KiB
Dart
import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:quickgui/src/model/operating_system.dart';
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import 'package:quickgui/src/model/option.dart';
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import 'package:quickgui/src/model/version.dart';
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import 'package:quickgui/src/widgets/downloader/cancel_dismiss_button.dart';
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import 'package:quickgui/src/widgets/downloader/download_label.dart';
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import 'package:quickgui/src/widgets/downloader/download_progress_bar.dart';
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import 'package:quickgui/src/i18n/i18n_ext.dart';
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class Downloader extends StatefulWidget {
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const Downloader({
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Key? key,
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required this.operatingSystem,
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required this.version,
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this.option,
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}) : super(key: key);
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final OperatingSystem operatingSystem;
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final Version version;
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final Option? option;
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@override
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_DownloaderState createState() => _DownloaderState();
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}
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class _DownloaderState extends State<Downloader> {
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final wgetPattern = RegExp("( [0-9.]+%)");
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final macRecoveryPattern = RegExp("([0-9]+\\.[0-9])");
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late final Stream<double> _progressStream;
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bool _downloadFinished = false;
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var controller = StreamController<double>();
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Process? _process;
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@override
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void initState() {
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_progressStream = progressStream();
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super.initState();
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}
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void parseWgetProgress(String line) {
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var matches = wgetPattern.allMatches(line).toList();
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if (matches.isNotEmpty) {
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var percent = matches[0].group(1);
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if (percent != null) {
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var value = double.parse(percent.replaceAll('%', '')) / 100.0;
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controller.add(value);
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}
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}
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}
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void parseMacRecoveryProgress(String line) {
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var matches = macRecoveryPattern.allMatches(line).toList();
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if (matches.isNotEmpty) {
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var size = matches[0].group(1);
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if (size != null) {
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var value = double.parse(size);
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controller.add(value);
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}
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}
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}
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Stream<double> progressStream() {
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var options = [widget.operatingSystem.code, widget.version.version];
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if (widget.option != null) {
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options.add(widget.option!.option);
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}
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Process.start('quickget', options).then((process) {
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if (widget.option!.downloader == 'wget') {
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process.stderr.transform(utf8.decoder).forEach(parseWgetProgress);
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} else if (widget.option!.downloader == 'zsync') {
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controller.add(-1);
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} else if (widget.option!.downloader == 'macrecovery') {
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process.stdout.transform(utf8.decoder).forEach(parseMacRecoveryProgress);
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}
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process.exitCode.then((value) {
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controller.close();
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setState(() {
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_downloadFinished = true;
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});
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});
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setState(() {
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_process = process;
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});
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});
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return controller.stream;
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text(
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'Downloading ${widget.operatingSystem.name} ${widget.version.version}' + (widget.option!.option.isNotEmpty ? ' (${widget.option!.option})' : ''),
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),
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automaticallyImplyLeading: false,
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),
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body: Column(
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children: [
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Expanded(
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child: StreamBuilder(
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stream: _progressStream,
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builder: (context, AsyncSnapshot<double> snapshot) {
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var data = !snapshot.hasData || widget.option!.downloader != 'wget' ? null : snapshot.data;
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return Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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DownloadLabel(
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downloadFinished: _downloadFinished,
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data: snapshot.hasData ? snapshot.data : null,
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downloader: widget.option!.downloader,
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),
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DownloadProgressBar(
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downloadFinished: _downloadFinished,
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data: snapshot.hasData ? data : null,
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),
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Padding(
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padding: const EdgeInsets.only(top: 32),
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child: Text('${context.t('Target folder')} : ${Directory.current}'),
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),
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],
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);
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},
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),
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),
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CancelDismissButton(
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onCancel: () {
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_process?.kill();
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},
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downloadFinished: _downloadFinished,
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),
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],
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),
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);
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}
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}
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