blob: c7796c72f46542854b86f1bd17fef973f42f0102 [file] [log] [blame]
// 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.
// Regenerates the material icons file.
// See
import 'dart:convert' show LineSplitter;
import 'dart:io';
import 'package:args/args.dart';
import 'package:path/path.dart' as path;
const String kOptionCodepointsPath = 'codepoints';
const String kOptionIconsPath = 'icons';
const String kOptionDryRun = 'dry-run';
const String kDefaultCodepointsPath = 'bin/cache/artifacts/material_fonts/codepoints';
const String kDefaultIconsPath = 'packages/flutter/lib/src/material/icons.dart';
const String kBeginGeneratedMark = '// BEGIN GENERATED';
const String kEndGeneratedMark = '// END GENERATED';
const Map<String, String> kIdentifierRewrites = const <String, String>{
'360': 'threesixty',
'3d_rotation': 'threed_rotation',
'4k': 'four_k',
'class': 'class_',
final Set<String> kMirroredIcons = new Set<String>.from(<String>[
// This list is obtained from:
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;
final ArgParser argParser = new ArgParser();
argParser.addOption(kOptionCodepointsPath, defaultsTo: kDefaultCodepointsPath);
argParser.addOption(kOptionIconsPath, defaultsTo: kDefaultIconsPath);
argParser.addFlag(kOptionDryRun, defaultsTo: false);
final ArgResults argResults = argParser.parse(args);
final File iconFile = new File(path.absolute(argResults[kOptionIconsPath]));
if (!iconFile.existsSync()) {
stderr.writeln('Icons file not found: ${iconFile.path}');
final File codepointsFile = new File(path.absolute(argResults[kOptionCodepointsPath]));
if (!codepointsFile.existsSync()) {
stderr.writeln('Codepoints file not found: ${codepointsFile.path}');
final String iconData = iconFile.readAsStringSync();
final String codepointData = codepointsFile.readAsStringSync();
final String newIconData = regenerateIconsFile(iconData, codepointData);
if (argResults[kOptionDryRun])
String regenerateIconsFile(String iconData, String codepointData) {
final StringBuffer buf = new StringBuffer();
bool generating = false;
for (String line in LineSplitter.split(iconData)) {
if (!generating)
if (line.contains(kBeginGeneratedMark)) {
generating = true;
final String iconDeclarations = generateIconDeclarations(codepointData);
} else if (line.contains(kEndGeneratedMark)) {
generating = false;
return buf.toString();
String generateIconDeclarations(String codepointData) {
return LineSplitter.split(codepointData)
.map((String l) => l.trim())
.where((String l) => l.isNotEmpty)
String getIconDeclaration(String line) {
final List<String> tokens = line.split(' ');
if (tokens.length != 2)
throw new FormatException('Unexpected codepoint data: $line');
final String name = tokens[0];
final String codepoint = tokens[1];
final String identifier = kIdentifierRewrites[name] ?? name;
final String description = name.replaceAll('_', ' ');
final String rtl = kMirroredIcons.contains(name) ? ', matchTextDirection: true' : '';
return '''
/// <p><i class="material-icons md-36">$name</i> &#x2014; material icon named "$description".</p>
static const IconData $identifier = const IconData(0x$codepoint, fontFamily: 'MaterialIcons'$rtl);