parent
c6311000ae
commit
b4bebc87e6
@ -0,0 +1,5 @@
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{
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"cSpell.words": [
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"ansu"
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]
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}
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@ -0,0 +1,43 @@
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// Copyright 2019 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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import 'package:flutter/material.dart';
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class CodeStyle extends InheritedWidget {
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const CodeStyle({
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this.baseStyle,
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this.numberStyle,
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this.commentStyle,
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this.keywordStyle,
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this.stringStyle,
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this.punctuationStyle,
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this.classStyle,
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this.constantStyle,
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@required Widget child,
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}) : super(child: child);
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final TextStyle baseStyle;
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final TextStyle numberStyle;
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final TextStyle commentStyle;
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final TextStyle keywordStyle;
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final TextStyle stringStyle;
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final TextStyle punctuationStyle;
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final TextStyle classStyle;
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final TextStyle constantStyle;
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static CodeStyle of(BuildContext context) {
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return context.dependOnInheritedWidgetOfExactType<CodeStyle>();
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}
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@override
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bool updateShouldNotify(CodeStyle oldWidget) =>
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oldWidget.baseStyle != baseStyle ||
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oldWidget.numberStyle != numberStyle ||
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oldWidget.commentStyle != commentStyle ||
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oldWidget.keywordStyle != keywordStyle ||
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oldWidget.stringStyle != stringStyle ||
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oldWidget.punctuationStyle != punctuationStyle ||
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oldWidget.classStyle != classStyle ||
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oldWidget.constantStyle != constantStyle;
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}
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@ -0,0 +1,35 @@
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import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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import 'code_view.dart';
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class BasePage extends StatelessWidget {
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final String title;
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final Widget body;
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final List<Widget> actions;
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final CodeBuilder codeBuilder;
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const BasePage(
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{Key key,
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@required this.title,
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@required this.body,
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this.actions,
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this.codeBuilder})
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: super(key: key);
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text(title),
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actions: actions ??
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[
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IconButton(
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icon: Icon(Icons.code),
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onPressed: () => Get.to(CodeView(text: codeBuilder)),
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),
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],
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),
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body: body,
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);
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}
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}
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@ -0,0 +1,28 @@
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import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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import 'code_view.dart';
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class CodeTile extends StatelessWidget {
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final Widget title;
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final Widget subTitle;
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final CodeBuilder builder;
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const CodeTile({Key key, this.title, this.subTitle, this.builder})
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: super(key: key);
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@override
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Widget build(BuildContext context) {
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return ListTile(
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title: title,
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subtitle: subTitle,
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trailing: IconButton(
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icon: Icon(Icons.code),
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onPressed: () => Get.to(
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CodeView(
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text: builder,
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),
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),
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),
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);
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}
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}
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import 'package:flutter/material.dart';
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import '../codeviewer/code_style.dart';
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typedef CodeBuilder = TextSpan Function(BuildContext context);
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class CodeView extends StatefulWidget {
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final CodeBuilder text;
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final String title;
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CodeView({Key key, @required this.text, this.title = 'Code'})
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: super(key: key);
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@override
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_CodeViewState createState() => _CodeViewState();
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}
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class _CodeViewState extends State<CodeView> {
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TextStyle codeTheme = TextStyle(fontSize: 14);
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: Colors.black87,
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appBar: AppBar(title: Text(widget.title)),
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body: SingleChildScrollView(
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padding: EdgeInsets.symmetric(horizontal: 10, vertical: 10),
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child: CodeStyle(
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baseStyle: codeTheme.copyWith(color: Colors.white70),
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numberStyle: codeTheme.copyWith(color: const Color(0xFFBD93F9)),
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commentStyle: codeTheme.copyWith(color: const Color(0xFF808080)),
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keywordStyle: codeTheme.copyWith(color: const Color(0xFF1CDEC9)),
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stringStyle: codeTheme.copyWith(color: const Color(0xFFFFA65C)),
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punctuationStyle:
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codeTheme.copyWith(color: const Color(0xFF8BE9FD)),
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classStyle: codeTheme.copyWith(color: const Color(0xFFD65BAD)),
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constantStyle: codeTheme.copyWith(color: const Color(0xFFFF8383)),
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child:
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Builder(builder: (context) => Text.rich(widget.text(context))),
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)),
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);
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}
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}
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@ -0,0 +1,31 @@
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// Copyright 2019 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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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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import 'segment_generator.dart';
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void main(List<String> arguments) {
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final parser = ArgParser()
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..addOption(
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'target',
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help: 'The file path for the output target file.',
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defaultsTo: path.join(
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Directory.current.path, 'lib', 'codeviewer', 'code_segments.dart'),
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)
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..addFlag(
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'dry-run',
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help: 'Write the output to stdout.',
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);
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final argResults = parser.parse(arguments);
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writeSegments(
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sourceDirectoryPath: path.join(Directory.current.path, 'lib'),
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targetFilePath: argResults['target'] as String,
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isDryRun: argResults['dry-run'] as bool,
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);
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}
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@ -0,0 +1,412 @@
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// Copyright 2019 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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import 'package:string_scanner/string_scanner.dart';
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abstract class SyntaxPrehighlighter {
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List<CodeSpan> format(String src);
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}
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class DartSyntaxPrehighlighter extends SyntaxPrehighlighter {
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DartSyntaxPrehighlighter() {
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_spans = <_HighlightSpan>[];
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}
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static const List<String> _keywords = <String>[
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'abstract',
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'as',
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'assert',
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'async',
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'await',
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'break',
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'case',
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'catch',
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'class',
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'const',
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'continue',
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'default',
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'deferred',
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'do',
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'dynamic',
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'else',
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'enum',
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'export',
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'external',
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'extends',
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'factory',
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'false',
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'final',
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'finally',
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'for',
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'get',
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'if',
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'implements',
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'import',
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'in',
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'is',
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'library',
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'new',
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'null',
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'operator',
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'part',
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'rethrow',
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'return',
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'set',
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'static',
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'super',
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'switch',
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'sync',
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'this',
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'throw',
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'true',
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'try',
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'typedef',
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'var',
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'void',
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'while',
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'with',
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'yield',
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];
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static const List<String> _builtInTypes = <String>[
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'int',
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'double',
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'num',
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'bool',
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];
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String _src;
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StringScanner _scanner;
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List<_HighlightSpan> _spans;
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@override
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List<CodeSpan> format(String src) {
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_src = src;
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_scanner = StringScanner(_src);
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if (_generateSpans()) {
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// Successfully parsed the code
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final formattedText = <CodeSpan>[];
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var currentPosition = 0;
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for (final span in _spans) {
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if (currentPosition != span.start) {
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formattedText
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.add(CodeSpan(text: _src.substring(currentPosition, span.start)));
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}
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formattedText
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.add(CodeSpan(type: span.type, text: span.textForSpan(_src)));
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currentPosition = span.end;
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}
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if (currentPosition != _src.length) {
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formattedText
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.add(CodeSpan(text: _src.substring(currentPosition, _src.length)));
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}
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return formattedText;
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} else {
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// Parsing failed, return with only basic formatting
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return [CodeSpan(type: _HighlightType.base, text: src)];
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}
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}
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bool _generateSpans() {
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var lastLoopPosition = _scanner.position;
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while (!_scanner.isDone) {
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// Skip White space
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_scanner.scan(RegExp(r'\s+'));
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// Block comments
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if (_scanner.scan(RegExp(r'/\*(.|\n)*\*/'))) {
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_spans.add(_HighlightSpan(
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_HighlightType.comment,
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_scanner.lastMatch.start,
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_scanner.lastMatch.end,
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));
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continue;
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}
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// Line comments
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if (_scanner.scan('//')) {
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final startComment = _scanner.lastMatch.start;
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var eof = false;
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int endComment;
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if (_scanner.scan(RegExp(r'.*\n'))) {
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endComment = _scanner.lastMatch.end - 1;
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} else {
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eof = true;
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endComment = _src.length;
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}
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_spans.add(_HighlightSpan(
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_HighlightType.comment,
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startComment,
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endComment,
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));
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if (eof) {
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break;
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}
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continue;
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}
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// Raw r"String"
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if (_scanner.scan(RegExp(r'r".*"'))) {
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_spans.add(_HighlightSpan(
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_HighlightType.string,
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_scanner.lastMatch.start,
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_scanner.lastMatch.end,
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));
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continue;
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}
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// Raw r'String'
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if (_scanner.scan(RegExp(r"r'.*'"))) {
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_spans.add(_HighlightSpan(
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_HighlightType.string,
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_scanner.lastMatch.start,
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_scanner.lastMatch.end,
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));
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continue;
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}
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// Multiline """String"""
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if (_scanner.scan(RegExp(r'"""(?:[^"\\]|\\(.|\n))*"""'))) {
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_spans.add(_HighlightSpan(
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_HighlightType.string,
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_scanner.lastMatch.start,
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_scanner.lastMatch.end,
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));
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continue;
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}
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// Multiline '''String'''
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if (_scanner.scan(RegExp(r"'''(?:[^'\\]|\\(.|\n))*'''"))) {
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_spans.add(_HighlightSpan(
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_HighlightType.string,
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_scanner.lastMatch.start,
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_scanner.lastMatch.end,
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));
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continue;
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}
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// "String"
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if (_scanner.scan(RegExp(r'"(?:[^"\\]|\\.)*"'))) {
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_spans.add(_HighlightSpan(
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_HighlightType.string,
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_scanner.lastMatch.start,
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_scanner.lastMatch.end,
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));
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continue;
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}
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// 'String'
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if (_scanner.scan(RegExp(r"'(?:[^'\\]|\\.)*'"))) {
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_spans.add(_HighlightSpan(
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_HighlightType.string,
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_scanner.lastMatch.start,
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_scanner.lastMatch.end,
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));
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continue;
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}
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// Double
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if (_scanner.scan(RegExp(r'\d+\.\d+'))) {
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_spans.add(_HighlightSpan(
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_HighlightType.number,
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_scanner.lastMatch.start,
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_scanner.lastMatch.end,
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));
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continue;
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}
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// Integer
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if (_scanner.scan(RegExp(r'\d+'))) {
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_spans.add(_HighlightSpan(_HighlightType.number,
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_scanner.lastMatch.start, _scanner.lastMatch.end));
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continue;
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}
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// Punctuation
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if (_scanner.scan(RegExp(r'[\[\]{}().!=<>&\|\?\+\-\*/%\^~;:,]'))) {
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_spans.add(_HighlightSpan(
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_HighlightType.punctuation,
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_scanner.lastMatch.start,
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_scanner.lastMatch.end,
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));
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continue;
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}
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// Meta data
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if (_scanner.scan(RegExp(r'@\w+'))) {
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_spans.add(_HighlightSpan(
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_HighlightType.keyword,
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_scanner.lastMatch.start,
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_scanner.lastMatch.end,
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));
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continue;
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}
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// Words
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if (_scanner.scan(RegExp(r'\w+'))) {
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_HighlightType type;
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||||
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var word = _scanner.lastMatch[0];
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||||
if (word.startsWith('_')) {
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word = word.substring(1);
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||||
}
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||||
|
||||
if (_keywords.contains(word)) {
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type = _HighlightType.keyword;
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||||
} else if (_builtInTypes.contains(word)) {
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type = _HighlightType.keyword;
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||||
} else if (_firstLetterIsUpperCase(word)) {
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type = _HighlightType.klass;
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||||
} else if (word.length >= 2 &&
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word.startsWith('k') &&
|
||||
_firstLetterIsUpperCase(word.substring(1))) {
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||||
type = _HighlightType.constant;
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||||
}
|
||||
|
||||
if (type != null) {
|
||||
_spans.add(_HighlightSpan(
|
||||
type,
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||||
_scanner.lastMatch.start,
|
||||
_scanner.lastMatch.end,
|
||||
));
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||||
}
|
||||
}
|
||||
|
||||
// Check if this loop did anything
|
||||
if (lastLoopPosition == _scanner.position) {
|
||||
// Failed to parse this file, abort gracefully
|
||||
return false;
|
||||
}
|
||||
lastLoopPosition = _scanner.position;
|
||||
}
|
||||
|
||||
_simplify();
|
||||
return true;
|
||||
}
|
||||
|
||||
void _simplify() {
|
||||
for (var i = _spans.length - 2; i >= 0; i -= 1) {
|
||||
if (_spans[i].type == _spans[i + 1].type &&
|
||||
_spans[i].end == _spans[i + 1].start) {
|
||||
_spans[i] = _HighlightSpan(
|
||||
_spans[i].type,
|
||||
_spans[i].start,
|
||||
_spans[i + 1].end,
|
||||
);
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||||
_spans.removeAt(i + 1);
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||||
}
|
||||
}
|
||||
}
|
||||
|
||||
bool _firstLetterIsUpperCase(String str) {
|
||||
if (str.isNotEmpty) {
|
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final first = str.substring(0, 1);
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return first == first.toUpperCase();
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}
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return false;
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||||
}
|
||||
}
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|
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enum _HighlightType {
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number,
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||||
comment,
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||||
keyword,
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||||
string,
|
||||
punctuation,
|
||||
klass,
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||||
constant,
|
||||
base,
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||||
}
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||||
|
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class _HighlightSpan {
|
||||
_HighlightSpan(this.type, this.start, this.end);
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||||
final _HighlightType type;
|
||||
final int start;
|
||||
final int end;
|
||||
|
||||
String textForSpan(String src) {
|
||||
return src.substring(start, end);
|
||||
}
|
||||
}
|
||||
|
||||
class CodeSpan {
|
||||
CodeSpan({this.type = _HighlightType.base, this.text});
|
||||
|
||||
final _HighlightType type;
|
||||
final String text;
|
||||
|
||||
@override
|
||||
String toString() {
|
||||
return 'TextSpan('
|
||||
'style: codeStyle.${_styleNameOf(type)}, '
|
||||
"text: '${_escape(text)}'"
|
||||
')';
|
||||
}
|
||||
}
|
||||
|
||||
String _styleNameOf(_HighlightType type) {
|
||||
switch (type) {
|
||||
case _HighlightType.number:
|
||||
return 'numberStyle';
|
||||
case _HighlightType.comment:
|
||||
return 'commentStyle';
|
||||
case _HighlightType.keyword:
|
||||
return 'keywordStyle';
|
||||
case _HighlightType.string:
|
||||
return 'stringStyle';
|
||||
case _HighlightType.punctuation:
|
||||
return 'punctuationStyle';
|
||||
case _HighlightType.klass:
|
||||
return 'classStyle';
|
||||
case _HighlightType.constant:
|
||||
return 'constantStyle';
|
||||
case _HighlightType.base:
|
||||
return 'baseStyle';
|
||||
}
|
||||
return '';
|
||||
}
|
||||
|
||||
String _escape(String text) {
|
||||
final escapedText = StringBuffer();
|
||||
|
||||
for (final char in text.runes) {
|
||||
if (char < 0x20 ||
|
||||
char >= 0x7F ||
|
||||
char == 0x22 ||
|
||||
char == 0x24 ||
|
||||
char == 0x27 ||
|
||||
char == 0x5C) {
|
||||
if (char <= 0xffff) {
|
||||
escapedText.write('\\u${_encodeAndPad(char)}');
|
||||
} else {
|
||||
escapedText.write('\\u{${_encode(char)}}');
|
||||
}
|
||||
} else {
|
||||
escapedText.write(String.fromCharCode(char));
|
||||
}
|
||||
}
|
||||
|
||||
return escapedText.toString();
|
||||
}
|
||||
|
||||
String _encode(int charCode) {
|
||||
return charCode.toRadixString(16);
|
||||
}
|
||||
|
||||
String _encodeAndPad(int charCode) {
|
||||
final encoded = _encode(charCode);
|
||||
return '0' * (4 - encoded.length) + encoded;
|
||||
}
|
||||
@ -0,0 +1,266 @@
|
||||
// Copyright 2019 The Flutter team. 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:convert';
|
||||
import 'dart:io';
|
||||
import 'prehighlighter.dart';
|
||||
|
||||
const _globalPrologue =
|
||||
'''// This file is automatically generated by codeviewer_cli.
|
||||
// Do not edit this file.
|
||||
// Copyright 2019 The Flutter team. 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/material.dart';
|
||||
import 'package:example/codeviewer/code_style.dart';
|
||||
class CodeSegments {
|
||||
''';
|
||||
|
||||
const _globalEpilogue = '}\n';
|
||||
|
||||
final Pattern beginSubsegment = RegExp(r'//\s+BEGIN');
|
||||
final Pattern endSubsegment = RegExp(r'//\s+END');
|
||||
|
||||
enum _FileReadStatus {
|
||||
comments,
|
||||
imports,
|
||||
finished,
|
||||
}
|
||||
|
||||
/// Returns the new status of the scanner whose previous status was
|
||||
/// [oldStatus], after scanning the line [line].
|
||||
_FileReadStatus _updatedStatus(_FileReadStatus oldStatus, String line) {
|
||||
_FileReadStatus lineStatus;
|
||||
if (line.trim().startsWith('//')) {
|
||||
lineStatus = _FileReadStatus.comments;
|
||||
} else if (line.trim().startsWith('import')) {
|
||||
lineStatus = _FileReadStatus.imports;
|
||||
} else {
|
||||
lineStatus = _FileReadStatus.finished;
|
||||
}
|
||||
|
||||
_FileReadStatus newStatus;
|
||||
switch (oldStatus) {
|
||||
case _FileReadStatus.comments:
|
||||
newStatus =
|
||||
(line.trim().isEmpty || lineStatus == _FileReadStatus.comments)
|
||||
? _FileReadStatus.comments
|
||||
: lineStatus;
|
||||
break;
|
||||
case _FileReadStatus.imports:
|
||||
newStatus = (line.trim().isEmpty || lineStatus == _FileReadStatus.imports)
|
||||
? _FileReadStatus.imports
|
||||
: _FileReadStatus.finished;
|
||||
break;
|
||||
case _FileReadStatus.finished:
|
||||
newStatus = oldStatus;
|
||||
break;
|
||||
}
|
||||
return newStatus;
|
||||
}
|
||||
|
||||
Map<String, String> _createSegments(String sourceDirectoryPath) {
|
||||
final files = Directory(sourceDirectoryPath)
|
||||
.listSync(recursive: true)
|
||||
.whereType<File>()
|
||||
.toList();
|
||||
|
||||
var subsegments = <String, StringBuffer>{};
|
||||
var subsegmentPrologues = <String, String>{};
|
||||
|
||||
var appearedSubsegments = <String>{};
|
||||
|
||||
for (final file in files) {
|
||||
// Process file.
|
||||
|
||||
final content = file.readAsStringSync();
|
||||
final lines = const LineSplitter().convert(content);
|
||||
|
||||
var status = _FileReadStatus.comments;
|
||||
|
||||
final prologue = StringBuffer();
|
||||
|
||||
final activeSubsegments = <String>{};
|
||||
|
||||
for (final line in lines) {
|
||||
// Update status.
|
||||
|
||||
status = _updatedStatus(status, line);
|
||||
|
||||
if (status != _FileReadStatus.finished) {
|
||||
prologue.writeln(line);
|
||||
}
|
||||
|
||||
// Process run commands.
|
||||
|
||||
if (line.trim().startsWith(beginSubsegment)) {
|
||||
final argumentString = line.replaceFirst(beginSubsegment, '').trim();
|
||||
var arguments = argumentString.isEmpty
|
||||
? <String>[]
|
||||
: argumentString.split(RegExp(r'\s+'));
|
||||
|
||||
for (final argument in arguments) {
|
||||
if (activeSubsegments.contains(argument)) {
|
||||
throw PreformatterException(
|
||||
'BEGIN $argument is used twice in file ${file.path}');
|
||||
} else if (appearedSubsegments.contains(argument)) {
|
||||
throw PreformatterException('BEGIN $argument is used twice');
|
||||
} else {
|
||||
activeSubsegments.add(argument);
|
||||
appearedSubsegments.add(argument);
|
||||
subsegments[argument] = StringBuffer();
|
||||
subsegmentPrologues[argument] = prologue.toString();
|
||||
}
|
||||
}
|
||||
} else if (line.trim().startsWith(endSubsegment)) {
|
||||
final argumentString = line.replaceFirst(endSubsegment, '').trim();
|
||||
final arguments = argumentString.isEmpty
|
||||
? <String>[]
|
||||
: argumentString.split(RegExp(r'\s+'));
|
||||
|
||||
if (arguments.isEmpty && activeSubsegments.length == 1) {
|
||||
arguments.add(activeSubsegments.first);
|
||||
}
|
||||
|
||||
for (final argument in arguments) {
|
||||
if (activeSubsegments.contains(argument)) {
|
||||
activeSubsegments.remove(argument);
|
||||
} else {
|
||||
throw PreformatterException(
|
||||
'END $argument is used without a paired BEGIN in ${file.path}');
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// Simple line.
|
||||
|
||||
for (final name in activeSubsegments) {
|
||||
subsegments[name].writeln(line);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (activeSubsegments.isNotEmpty) {
|
||||
throw PreformatterException('File ${file.path} has unpaired BEGIN');
|
||||
}
|
||||
}
|
||||
|
||||
var segments = <String, List<TaggedString>>{};
|
||||
var segmentPrologues = <String, String>{};
|
||||
|
||||
// Sometimes a code segment is made up of subsegments. They are marked by
|
||||
// names with a "#" symbol in it, such as "bottomSheetDemoModal#1" and
|
||||
// "bottomSheetDemoModal#2".
|
||||
// The following code groups the subsegments by order into segments.
|
||||
subsegments.forEach((key, value) {
|
||||
String name;
|
||||
double order;
|
||||
|
||||
if (key.contains('#')) {
|
||||
var parts = key.split('#');
|
||||
name = parts[0];
|
||||
order = double.parse(parts[1]);
|
||||
} else {
|
||||
name = key;
|
||||
order = 0;
|
||||
}
|
||||
|
||||
if (!segments.containsKey(name)) {
|
||||
segments[name] = [];
|
||||
}
|
||||
segments[name].add(
|
||||
TaggedString(
|
||||
text: value.toString(),
|
||||
order: order,
|
||||
),
|
||||
);
|
||||
|
||||
segmentPrologues[name] = subsegmentPrologues[key];
|
||||
});
|
||||
|
||||
segments.forEach((key, value) {
|
||||
value.sort((ts1, ts2) => (ts1.order - ts2.order).sign.round());
|
||||
});
|
||||
|
||||
var answer = <String, String>{};
|
||||
|
||||
for (final name in segments.keys) {
|
||||
final buffer = StringBuffer();
|
||||
|
||||
buffer.write(segmentPrologues[name].trim());
|
||||
buffer.write('\n\n');
|
||||
|
||||
for (final ts in segments[name]) {
|
||||
buffer.write(ts.text.trim());
|
||||
buffer.write('\n\n');
|
||||
}
|
||||
|
||||
answer[name] = buffer.toString();
|
||||
}
|
||||
|
||||
return answer;
|
||||
}
|
||||
|
||||
/// A string [text] together with a number [order], for sorting purposes.
|
||||
/// Used to store different subsegments of a code segment.
|
||||
/// The [order] of each subsegment is tagged with the code in order to be
|
||||
/// sorted in the desired order.
|
||||
class TaggedString {
|
||||
TaggedString({this.text, this.order});
|
||||
|
||||
final String text;
|
||||
final double order;
|
||||
}
|
||||
|
||||
void _formatSegments(Map<String, String> segments, IOSink output) {
|
||||
output.write(_globalPrologue);
|
||||
|
||||
final sortedNames = segments.keys.toList()..sort();
|
||||
for (final name in sortedNames) {
|
||||
final code = segments[name];
|
||||
|
||||
output.writeln(' static TextSpan $name (BuildContext context) {');
|
||||
output.writeln(' final codeStyle = CodeStyle.of(context);');
|
||||
output.writeln(' return TextSpan(children: [');
|
||||
|
||||
final codeSpans = DartSyntaxPrehighlighter().format(code);
|
||||
|
||||
for (final span in codeSpans) {
|
||||
output.write(' ');
|
||||
output.write(span.toString());
|
||||
output.write(',\n');
|
||||
}
|
||||
|
||||
output.write(' ]); }\n');
|
||||
}
|
||||
|
||||
output.write(_globalEpilogue);
|
||||
|
||||
output.close();
|
||||
}
|
||||
|
||||
/// Collect code segments, highlight, and write to file.
|
||||
///
|
||||
/// [writeSegments] walks through the directory specified by
|
||||
/// [sourceDirectoryPath] and reads every file in it,
|
||||
/// collects code segments marked by "// BEGIN <segment_name>" and "// END",
|
||||
/// highlights them, and writes to the file specified by
|
||||
/// [targetFilePath]. If [isDryRun] is true, the output will
|
||||
/// be written to stdout.
|
||||
///
|
||||
/// The output file is a dart source file with a class "CodeSegments" and
|
||||
/// static methods of type TextSpan(BuildContext context).
|
||||
/// Each method generates a widget that displays a segment of code.
|
||||
///
|
||||
/// The target file is overwritten.
|
||||
void writeSegments(
|
||||
{String sourceDirectoryPath, String targetFilePath, bool isDryRun}) {
|
||||
final segments = _createSegments(sourceDirectoryPath);
|
||||
final output = isDryRun ? stdout : File(targetFilePath).openWrite();
|
||||
_formatSegments(segments, output);
|
||||
}
|
||||
|
||||
class PreformatterException implements Exception {
|
||||
PreformatterException(this.cause);
|
||||
String cause;
|
||||
}
|
||||
@ -0,0 +1,87 @@
|
||||
import 'dart:async';
|
||||
import 'dart:convert';
|
||||
import 'dart:io';
|
||||
|
||||
import 'package:grinder/grinder.dart';
|
||||
import 'package:path/path.dart' as path;
|
||||
|
||||
void main(List<String> args) => grind(args);
|
||||
|
||||
|
||||
@Task('Format dart files')
|
||||
Future<void> format({String path = '.'}) async {
|
||||
await _runProcess('flutter', ['format', path]);
|
||||
}
|
||||
|
||||
|
||||
@Task('Update code segments')
|
||||
Future<void> updateCodeSegments() async {
|
||||
final codeviewerPath =
|
||||
path.join(Directory.current.path, 'tool', 'codeviewer_cli', 'main.dart');
|
||||
|
||||
Dart.run(codeviewerPath);
|
||||
final codeSegmentsPath = path.join('lib', 'codeviewer', 'code_segments.dart');
|
||||
await format(path: codeSegmentsPath);
|
||||
}
|
||||
|
||||
@Task('Verify code segments')
|
||||
Future<void> verifyCodeSegments() async {
|
||||
final codeviewerPath =
|
||||
path.join(Directory.current.path, 'tool', 'codeviewer_cli', 'main.dart');
|
||||
|
||||
// We use stdin and stdout to write and format the code segments, to avoid
|
||||
// creating any files.
|
||||
final codeSegmentsUnformatted =
|
||||
Dart.run(codeviewerPath, arguments: ['--dry-run'], quiet: true);
|
||||
final codeSegmentsFormatted = await _startProcess(
|
||||
path.normalize(path.join(dartVM.path, '../dartfmt')),
|
||||
input: codeSegmentsUnformatted,
|
||||
);
|
||||
|
||||
// Read the original code segments file.
|
||||
final codeSegmentsPath = path.join(
|
||||
Directory.current.path, 'lib', 'codeviewer', 'code_segments.dart');
|
||||
final expectedCodeSegmentsOutput =
|
||||
await File(codeSegmentsPath).readAsString();
|
||||
|
||||
if (codeSegmentsFormatted.trim() != expectedCodeSegmentsOutput.trim()) {
|
||||
stderr.writeln(
|
||||
'The contents of $codeSegmentsPath are different from that produced by '
|
||||
'codeviewer_cli. Did you forget to run `flutter pub run grinder '
|
||||
'update-code-segments` after updating a demo?',
|
||||
);
|
||||
exit(1);
|
||||
}
|
||||
}
|
||||
|
||||
Future<void> _runProcess(String executable, List<String> arguments) async {
|
||||
final result = await Process.run(executable, arguments);
|
||||
stdout.write(result.stdout);
|
||||
stderr.write(result.stderr);
|
||||
}
|
||||
|
||||
// Function to make sure we capture all of the stdout.
|
||||
// Reference: https://github.com/dart-lang/sdk/issues/31666
|
||||
Future<String> _startProcess(String executable,
|
||||
{List<String> arguments = const [], String input}) async {
|
||||
final output = <int>[];
|
||||
final completer = Completer<int>();
|
||||
final process = await Process.start(executable, arguments);
|
||||
process.stdin.writeln(input);
|
||||
process.stdout.listen(
|
||||
(event) {
|
||||
output.addAll(event);
|
||||
},
|
||||
onDone: () async => completer.complete(await process.exitCode),
|
||||
);
|
||||
await process.stdin.close();
|
||||
|
||||
final exitCode = await completer.future;
|
||||
if (exitCode != 0) {
|
||||
stderr.write(
|
||||
'Running "$executable ${arguments.join(' ')}" failed with $exitCode.\n',
|
||||
);
|
||||
exit(exitCode);
|
||||
}
|
||||
return Future<String>.value(utf8.decoder.convert(output));
|
||||
}
|
||||
Loading…
Reference in new issue