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// Copyright 2020 The Flutter team. 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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// Called by https://pub.dartlang.org/packages/peanut to generate example pages
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// for hosting.
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//
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// Requires at least v3.2.0 of `package:peanut`
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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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import 'common.dart';
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main(List<String> args) async {
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final buildDir = args[0];
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final fileMap =
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(jsonDecode(args[1]) as Map<String, dynamic>).cast<String, String>();
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if (fileMap.length < 2) {
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throw StateError('We are assuming there is more than one sample!');
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}
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// This is USUALLY the case – where we have more than one demo
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for (var exampleDir in fileMap.values) {
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for (var htmlFile in Directory(p.join(buildDir, exampleDir))
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.listSync()
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.whereType<File>()
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.where((f) => p.extension(f.path) == '.html')) {
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_updateHtml(htmlFile, buildDir, exampleDir);
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}
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}
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// Move each sample into a subdirectory, 'web'
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for (var exampleDir in fileMap.values) {
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var oldDirectory = Directory(p.join(buildDir, exampleDir));
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Directory(p.join(buildDir, 'web')).createSync();
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oldDirectory.renameSync(p.join(buildDir, 'web', exampleDir));
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}
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// Build the sample index and copy the files into this directory
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print('building the sample index...');
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await run('samples_index', 'pub', ['get']);
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await run('samples_index', 'pub', ['run', 'grinder', 'build-release']);
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// Copy the contents of the samples_index/public directory to the build
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// directory
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logWrapped(ansiMagenta, ' Copying samples_index/public to build directory');
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var contents = Directory(p.join('samples_index', 'public')).listSync();
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for (var entity in contents) {
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var newPath = p.join(buildDir, p.basename(entity.path));
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entity.renameSync(newPath);
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}
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}
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void _updateHtml(File htmlFile, String buildDir, String exampleDir) {
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final content = htmlFile.readAsStringSync();
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final filePath = p.relative(htmlFile.path, from: buildDir);
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if (!content.contains(_standardMeta)) {
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print('!!! missing standard meta! - $filePath');
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}
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final newContent = content
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.replaceFirst('<head>', '<head>\n$_analytics')
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.replaceFirst(_emptyTitle,
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'<title>${_prettyName(exampleDir)} - Flutter web sample</title>');
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if (newContent == content) {
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print('!!! Did not replace contents in $filePath');
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} else {
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print('Replaced contents in $filePath');
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htmlFile.writeAsStringSync(newContent, flush: true);
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}
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}
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final _underscoreOrSlash = RegExp('_|/');
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String _prettyName(String input) =>
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input.split(_underscoreOrSlash).where((e) => e.isNotEmpty).map((e) {
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return e.substring(0, 1).toUpperCase() + e.substring(1);
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}).join(' ');
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// flutter.github.io
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const _analyticsId = 'UA-67589403-8';
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const _analytics = '''
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<script async src="https://www.googletagmanager.com/gtag/js?id=$_analyticsId"></script>
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<script>
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window.dataLayer = window.dataLayer || [];
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function gtag(){dataLayer.push(arguments);}
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gtag('js', new Date());
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gtag('config', '$_analyticsId');
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</script>''';
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const _emptyTitle = '<title></title>';
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const _standardMeta = '''
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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$_emptyTitle''';
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