try.dartlang.org version 5.

dart/site/try/extract_theme.dart

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:io';
+
+StringBuffer themes = new StringBuffer();
+
+void main() {
+  print('part of trydart.themes;\n');
+  new Options().arguments.forEach(extractTheme);
+  print('''
+/// List of known themes. The default is the first theme.
+const List<Theme> THEMES = const <Theme> [
+    const Theme(),
+$themes];''');
+}
+
+final DECORATION_PATTERN = new RegExp(r'^ *<([a-z][^ ]+)[ ]');
+
+String attr(String name, String line) {
+  var match = new RegExp('$name'r'="([^"]*)"').firstMatch(line);
+  if (match == null) return null;
+  return match[1];
+}
+
+void extractTheme(String filename) {
+  bool openedTheme = false;
+  for (String line in new File(filename).readAsLinesSync()) {
+    if (line.startsWith('<colorTheme')) {
+      openTheme(line, filename);
+      openedTheme = true;
+    } else if (line.startsWith('</colorTheme>')) {
+      if (!openedTheme) throw 'Theme not found in $filename';
+      closeTheme();
+      openedTheme = false;
+    } else if (DECORATION_PATTERN.hasMatch(line)) {
+      if (!openedTheme) throw 'Theme not found in $filename';
+      printDecoration(line);
+    }
+  }
+}
+
+openTheme(String line, String filename) {
+  var name = attr('name', line);
+  var author = attr('author', line);
+  if (name == null) name = 'Untitled';
+  if (name == 'Default') name = 'Dart Editor';
+  var declaration = name.replaceAll(new RegExp('[^a-zA-Z0-9_]'), '_');
+  themes.write('    const ${declaration}Theme(),\n');
+  print('/// $name theme extracted from');
+  print('/// $filename.');
+  if (author != null) {
+    print('/// Author: $author.');
+  }
+  print("""
+class ${declaration}Theme extends Theme {
+  const ${declaration}Theme();
+
+  String get name => '$name';
+""");
+}
+
+closeTheme() {
+  print('}\n');
+}
+
+printDecoration(String line) {
+  String name = DECORATION_PATTERN.firstMatch(line)[1];
+  if (name == 'class') name = 'className';
+  if (name == 'enum') name = 'enumName';
+  StringBuffer properties = new StringBuffer();
+  var color = attr('color', line);
+  if (color != null) {
+    properties.write("color: '$color'");
+  }
+  var bold = attr('bold', line) == 'true';
+  if (bold) {
+    if (!properties.isEmpty) properties.write(', ');
+    properties.write('bold: true');
+  }
+  print('  Decoration get $name => const Decoration($properties);');
+}