mirror of
https://github.com/flutter/flutter
synced 2024-10-13 19:52:53 +00:00
103 lines
3.4 KiB
Dart
103 lines
3.4 KiB
Dart
// Copyright 2016 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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// Regenerates the material icons file.
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// See https://github.com/flutter/flutter/wiki/Updating-Material-Design-Fonts
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import 'dart:convert' show LineSplitter;
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import 'dart:io';
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import 'package:args/args.dart';
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import 'package:path/path.dart' as path;
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const String kOptionCodepointsPath = 'codepoints';
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const String kOptionIconsPath = 'icons';
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const String kOptionDryRun = 'dry-run';
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const String kDefaultCodepointsPath = 'bin/cache/artifacts/material_fonts/codepoints';
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const String kDefaultIconsPath = 'packages/flutter/lib/src/material/icons.dart';
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const String kBeginGeneratedMark = '// BEGIN GENERATED';
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const String kEndGeneratedMark = '// END GENERATED';
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const Map<String, String> kIdentifierRewrites = const <String, String>{
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'360': 'threesixty',
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'3d_rotation': 'threed_rotation',
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'4k': 'four_k',
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'class': 'class_',
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};
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void main(List<String> args) {
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// If we're run from the `tools` dir, set the cwd to the repo root.
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if (path.basename(Directory.current.path) == 'tools')
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Directory.current = Directory.current.parent.parent;
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ArgParser argParser = new ArgParser();
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argParser.addOption(kOptionCodepointsPath, defaultsTo: kDefaultCodepointsPath);
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argParser.addOption(kOptionIconsPath, defaultsTo: kDefaultIconsPath);
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argParser.addFlag(kOptionDryRun, defaultsTo: false);
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ArgResults argResults = argParser.parse(args);
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File iconFile = new File(path.absolute(argResults[kOptionIconsPath]));
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if (!iconFile.existsSync()) {
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stderr.writeln('Icons file not found: ${iconFile.path}');
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exit(1);
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}
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File codepointsFile = new File(path.absolute(argResults[kOptionCodepointsPath]));
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if (!codepointsFile.existsSync()) {
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stderr.writeln('Codepoints file not found: ${codepointsFile.path}');
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exit(1);
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}
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String iconData = iconFile.readAsStringSync();
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String codepointData = codepointsFile.readAsStringSync();
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String newIconData = regenerateIconsFile(iconData, codepointData);
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if (argResults[kOptionDryRun])
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stdout.writeln(newIconData);
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else
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iconFile.writeAsStringSync(newIconData);
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}
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String regenerateIconsFile(String iconData, String codepointData) {
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StringBuffer buf = new StringBuffer();
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bool generating = false;
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for (String line in LineSplitter.split(iconData)) {
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if (!generating)
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buf.writeln(line);
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if (line.contains(kBeginGeneratedMark)) {
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generating = true;
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String iconDeclarations = generateIconDeclarations(codepointData);
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buf.write(iconDeclarations);
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} else if (line.contains(kEndGeneratedMark)) {
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generating = false;
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buf.writeln(line);
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}
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}
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return buf.toString();
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}
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String generateIconDeclarations(String codepointData) {
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return LineSplitter.split(codepointData)
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.map((String l) => l.trim())
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.where((String l) => l.isNotEmpty)
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.map(getIconDeclaration)
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.join();
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}
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String getIconDeclaration(String line) {
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List<String> tokens = line.split(' ');
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if (tokens.length != 2)
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throw new FormatException('Unexpected codepoint data: $line');
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String name = tokens[0];
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String codepoint = tokens[1];
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String identifier = kIdentifierRewrites[name] ?? name;
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String description = name.replaceAll('_', ' ');
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return '''
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/// <p><i class="material-icons md-36">$name</i> — material icon named "$description".</p>
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static const IconData $identifier = const IconData(0x$codepoint);
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''';
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}
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