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102 lines
3.9 KiB
Dart
102 lines
3.9 KiB
Dart
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'package:flutter_devicelab/framework/framework.dart';
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import 'package:flutter_devicelab/framework/utils.dart';
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import 'package:path/path.dart' as path;
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// the numbers below are odd, so that the totals don't seem round. :-)
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const double todoCost = 1009.0; // about two average SWE days, in dollars
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const double ignoreCost = 2003.0; // four average SWE days, in dollars
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const double pythonCost = 3001.0; // six average SWE days, in dollars
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final RegExp todoPattern = new RegExp(r'(?://|#) *TODO');
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final RegExp ignorePattern = new RegExp(r'// *ignore:');
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Stream<double> findCostsForFile(File file) {
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if (path.extension(file.path) == '.py')
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return new Stream<double>.fromIterable(<double>[pythonCost]);
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if (path.extension(file.path) != '.dart' &&
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path.extension(file.path) != '.yaml' &&
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path.extension(file.path) != '.sh')
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return null;
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StreamController<double> result = new StreamController<double>();
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file.openRead().transform(UTF8.decoder).transform(const LineSplitter()).listen((String line) {
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if (line.contains(todoPattern))
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result.add(todoCost);
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if (line.contains(ignorePattern))
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result.add(ignoreCost);
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}, onDone: () { result.close(); });
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return result.stream;
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}
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Stream<double> findCostsForDirectory(Directory directory, Set<String> gitFiles) {
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StreamController<double> result = new StreamController<double>();
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Set<StreamSubscription<dynamic>> subscriptions = new Set<StreamSubscription<dynamic>>();
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void checkDone(StreamSubscription<dynamic> subscription, String path) {
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subscriptions.remove(subscription);
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if (subscriptions.isEmpty)
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result.close();
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}
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StreamSubscription<FileSystemEntity> listSubscription;
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subscriptions.add(listSubscription = directory.list(followLinks: false).listen((FileSystemEntity entity) {
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String name = path.relative(entity.path, from: flutterDirectory.path);
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if (gitFiles.contains(name)) {
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if (entity is File) {
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StreamSubscription<double> subscription;
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subscription = findCostsForFile(entity)?.listen((double cost) {
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result.add(cost);
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}, onDone: () { checkDone(subscription, name); });
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if (subscription != null)
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subscriptions.add(subscription);
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} else if (entity is Directory) {
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StreamSubscription<double> subscription;
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subscription = findCostsForDirectory(entity, gitFiles)?.listen((double cost) {
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result.add(cost);
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}, onDone: () { checkDone(subscription, name); });
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if (subscription != null)
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subscriptions.add(subscription);
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}
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}
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}, onDone: () { checkDone(listSubscription, directory.path); }));
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return result.stream;
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}
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const String _kBenchmarkKey = 'technical_debt_in_dollars';
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Future<Null> main() async {
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await task(() async {
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Process git = await startProcess(
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'git',
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<String>['ls-files', '--full-name', flutterDirectory.path],
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workingDirectory: flutterDirectory.path,
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);
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Set<String> gitFiles = new Set<String>();
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await for (String entry in git.stdout.transform(UTF8.decoder).transform(const LineSplitter())) {
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String subentry = '';
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for (String component in path.split(entry)) {
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if (subentry.isNotEmpty)
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subentry += path.separator;
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subentry += component;
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gitFiles.add(subentry);
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}
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}
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int gitExitCode = await git.exitCode;
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if (gitExitCode != 0)
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throw new Exception('git exit with unexpected error code $gitExitCode');
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List<double> costs = await findCostsForDirectory(flutterDirectory, gitFiles).toList();
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double total = costs.fold(0.0, (double total, double cost) => total + cost);
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return new TaskResult.success(
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<String, dynamic>{_kBenchmarkKey: total},
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benchmarkScoreKeys: <String>[_kBenchmarkKey],
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);
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});
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}
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