Re add large sample (#3661)
* Revert "Revert "Mega gallery (#3647)" (#3659)"
This reverts commit ea62d31fde20ab109d51aa9d0104583c414b13a4.
* fix the dev/dartdoc.dart script
diff --git a/dev/tools/mega_gallery.dart b/dev/tools/mega_gallery.dart
new file mode 100644
index 0000000..7ce1faa
--- /dev/null
+++ b/dev/tools/mega_gallery.dart
@@ -0,0 +1,191 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/// Make `n` copies of material_gallery.
+
+import 'dart:io';
+
+import 'package:args/args.dart';
+import 'package:path/path.dart' as path;
+
+/// If no `copies` param is passed in, we scale the generated app up to 60k lines.
+const int kTargetLineCount = 60 * 1024;
+
+void main(List<String> args) {
+ // If we're run from the `tools` dir, set the cwd to the repo root.
+ if (path.basename(Directory.current.path) == 'tools')
+ Directory.current = Directory.current.parent.parent;
+
+ ArgParser argParser = new ArgParser();
+ // ../mega_gallery? dev/benchmarks/mega_gallery?
+ argParser.addOption('out', defaultsTo: _normalize('dev/benchmarks/mega_gallery'));
+ argParser.addOption('copies');
+ argParser.addFlag('delete', negatable: false);
+ argParser.addFlag('help', abbr: 'h', negatable: false);
+
+ ArgResults results = argParser.parse(args);
+
+ if (results['help']) {
+ print('Generate n copies of material_gallery.\n');
+ print('usage: dart mega_gallery.dart <options>');
+ print(argParser.usage);
+ exit(0);
+ }
+
+ Directory source = new Directory(_normalize('examples/material_gallery'));
+ Directory out = new Directory(_normalize(results['out']));
+
+ if (results['delete']) {
+ if (out.existsSync()) {
+ print('Deleting ${out.path}');
+ out.deleteSync(recursive: true);
+ }
+
+ exit(0);
+ }
+
+ int copies;
+ if (!results.wasParsed('copies')) {
+ SourceStats stats = getStatsFor(_dir(source, 'lib'));
+ copies = (kTargetLineCount / stats.lines).round();
+ } else {
+ copies = int.parse(results['copies']);
+ }
+
+ print('Stats:');
+ print(' packages/flutter : ${getStatsFor(new Directory("packages/flutter"))}');
+ print(' examples/material_gallery : ${getStatsFor(new Directory("examples/material_gallery"))}');
+ print('');
+
+ print('Making $copies copies of material_gallery:');
+
+ Directory lib = _dir(out, 'lib');
+ if (lib.existsSync())
+ lib.deleteSync(recursive: true);
+
+ // Copy everything that's not a symlink, dot directory, or build/.
+ _copy(source, out);
+
+ // Make n - 1 copies.
+ for (int i = 1; i < copies; i++)
+ _copyGallery(out, i);
+
+ // Create a new entry-point.
+ _createEntry(_file(out, 'lib/main.dart'), copies);
+
+ // Update the pubspec.
+ String pubspec = _file(out, 'pubspec.yaml').readAsStringSync();
+ pubspec = pubspec.replaceAll('../../packages/flutter', '../../../packages/flutter');
+ _file(out, 'pubspec.yaml').writeAsStringSync(pubspec);
+
+ _file(out, '.dartignore').writeAsStringSync('');
+
+ // Count source lines and number of files; tell how to run it.
+ print(' ${path.relative(results["out"])}: ${getStatsFor(out)}');
+}
+
+// TODO(devoncarew): Create an entry-point that builds a UI with all `n` copies.
+void _createEntry(File mainFile, int copies) {
+ StringBuffer imports = new StringBuffer();
+ StringBuffer importRefs = new StringBuffer();
+
+ for (int i = 1; i < copies; i++) {
+ imports.writeln("import 'gallery_$i/main.dart' as main_$i;");
+ importRefs.writeln(" main_$i.main;");
+ }
+
+ String contents = '''
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'package:flutter/widgets.dart';
+
+import 'gallery/app.dart';
+${imports.toString().trim()}
+
+void main() {
+ // Make sure the imports are not marked as unused.
+ ${importRefs.toString().trim()}
+
+ runApp(new GalleryApp());
+}
+''';
+
+ mainFile.writeAsStringSync(contents);
+}
+
+void _copyGallery(Directory galleryDir, int index) {
+ Directory lib = _dir(galleryDir, 'lib');
+ Directory dest = _dir(lib, 'gallery_$index');
+ dest.createSync();
+
+ // Copy demo/, gallery/, and main.dart.
+ _copy(_dir(lib, 'demo'), _dir(dest, 'demo'));
+ _copy(_dir(lib, 'gallery'), _dir(dest, 'gallery'));
+ _file(dest, 'main.dart').writeAsBytesSync(_file(lib, 'main.dart').readAsBytesSync());
+}
+
+void _copy(Directory source, Directory target) {
+ if (!target.existsSync())
+ target.createSync();
+
+ for (FileSystemEntity entity in source.listSync(followLinks: false)) {
+ String name = path.basename(entity.path);
+
+ if (entity is Directory) {
+ if (name == 'build' || name.startsWith('.'))
+ continue;
+ _copy(entity, new Directory(path.join(target.path, name)));
+ } else if (entity is File) {
+ if (name == '.packages' || name == 'pubspec.lock')
+ continue;
+ File dest = new File(path.join(target.path, name));
+ dest.writeAsBytesSync(entity.readAsBytesSync());
+ }
+ }
+}
+
+Directory _dir(Directory parent, String name) => new Directory(path.join(parent.path, name));
+File _file(Directory parent, String name) => new File(path.join(parent.path, name));
+String _normalize(String filePath) => path.normalize(path.absolute(filePath));
+
+class SourceStats {
+ int files = 0;
+ int lines = 0;
+
+ String toString() => '${_comma(files)} files, ${_comma(lines)} lines';
+}
+
+SourceStats getStatsFor(Directory dir, [SourceStats stats]) {
+ stats ??= new SourceStats();
+
+ for (FileSystemEntity entity in dir.listSync(recursive: false, followLinks: false)) {
+ String name = path.basename(entity.path);
+ if (entity is File && name.endsWith('.dart')) {
+ stats.files += 1;
+ stats.lines += _lineCount(entity);
+ } else if (entity is Directory && !name.startsWith('.')) {
+ getStatsFor(entity, stats);
+ }
+ }
+
+ return stats;
+}
+
+int _lineCount(File file) {
+ return file.readAsLinesSync().where((String line) {
+ line = line.trim();
+ if (line.isEmpty || line.startsWith('//'))
+ return false;
+ return true;
+ }).length;
+}
+
+String _comma(int count) {
+ String str = count.toString();
+ if (str.length > 3)
+ return str.substring(0, str.length - 3) + ',' + str.substring(str.length - 3);
+ return str;
+}