Sam Rawlins
06f5db3480
Change-Id: I593497edfbb05f0b524de4d18dc87ef7d1efdd2d Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425583 Reviewed-by: Devon Carew <devoncarew@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com> Reviewed-by: Ben Konyi <bkonyi@google.com>
103 lines
2.7 KiB
Dart
103 lines
2.7 KiB
Dart
// Copyright (c) 2023, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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/// Generate a json file representing the files in the Dart SDK and their sizes.
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/// Print out instructions for opening Dart DevTools to visualize this info.
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library;
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import 'dart:convert';
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import 'dart:io';
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import 'package:path/path.dart' as p;
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final String dartSdkPath = p.dirname(p.dirname(Platform.resolvedExecutable));
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final List<FileStats> fileStats = [];
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void main(List<String> arguments) {
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final version =
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File(p.join(dartSdkPath, 'version')).readAsStringSync().trim();
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final sdkData = build(Directory(dartSdkPath), extra: {
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'comment-1': 'Dart SDK $version',
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'comment-2': '<size>',
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'type': 'web',
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});
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final sdkSize = fileStats.fold<int>(0, (previous, e) => previous + e.size);
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sdkData['comment-2'] = sizeMB(sdkSize);
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final outFile = File('sdk-size.json');
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outFile.writeAsStringSync(JsonEncoder.withIndent('').convert(sdkData));
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const width = 52;
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print('Large SDK files');
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print('-----------------');
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fileStats.sort();
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for (var stat in fileStats) {
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if (stat.size < 2 * 1042 * 1024) break;
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print('${stat.path.padRight(width)}: ${sizeMB(stat.size)}');
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}
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print('');
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print('SDK: $dartSdkPath');
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print('Version: $version');
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print('Size: ${sizeMB(sdkSize)}');
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print('');
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print('Wrote data to ${outFile.path}; to view the SDK size treemap, run:');
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print('');
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print(' dart devtools --app-size-base=${outFile.path}');
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print('');
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}
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String sizeMB(int size) => '${(size / (1024.0 * 1024)).toStringAsFixed(1)}MB';
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Map<String, Object?> build(FileSystemEntity entity,
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{Map<String, String> extra = const {}}) {
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const fsBlockSize = 4096.0;
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if (entity is File) {
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final size =
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((entity.lengthSync() / fsBlockSize).ceilToDouble() * fsBlockSize)
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.truncate();
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fileStats.add(FileStats(p.relative(entity.path, from: dartSdkPath), size));
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return {
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'n': entity.name,
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'value': size,
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};
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} else {
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entity as Directory;
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return {
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...extra,
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'n': '${entity.name}/',
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'children': [
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...entity.listSyncSorted().map(build),
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],
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};
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}
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}
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extension FileSystemEntityExtension on FileSystemEntity {
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String get name => p.basename(path);
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}
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extension DirectoryExtension on Directory {
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List<FileSystemEntity> listSyncSorted() {
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return listSync()..sort((a, b) => a.name.compareTo(b.name));
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}
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}
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class FileStats implements Comparable<FileStats> {
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final String path;
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final int size;
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FileStats(this.path, this.size);
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@override
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int compareTo(FileStats other) => other.size - size;
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}
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