Syntax highlighting for Dart and Flutter

Last update: Jan 8, 2023

Overview

highlight.dart

Syntax highlighting for Dart and Flutter, which supports lots of languages and themes.

Package	Version	Description
highlight		Core syntax highlighting library written in Dart
flutter_highlight		Flutter syntax highlighting widget

References

License

MIT

Comments

List will be trimed in
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Hi,

I had a same Java code wrapped with <pre> tag, like this:

List<Integer> arr = new List<Integer>;

when I display it in flutter with highlight, it will be trimed to:

List arr = new List;

Is there a method to resovle it? Thanks!
opened by yeszao 2
Add method to get a `TextEditingController`

Only a widget can be accessed for now. Access to a TextEditingController based class that style it's text could be added. It would allow any TextField to highlight syntax.

opened by dutrieuc 1

Double quotes (") are not escaped

As far as I understand, double quotes (") should be escaped with " in the generated HTML. <, > and & are correctly escaped.

import 'package:highlight/highlight.dart' show highlight;

main() {
  var source = '''main() {
  print("Hello <> World!");
}
''';

  var result = highlight.parse(source, language: 'dart');
  var html = result.toHtml();
  print(html); // HTML string
}

Actual output is:

<span class="hljs-built_in">print</span>(<span class="hljs-string">"Hello &lt;&gt; World!"</span>);

Expected output is:

<span class="hljs-built_in">print</span>(<span class="hljs-string">&quot;Hello &lt;&gt; World!&quot;</span>);

opened by deen4861 0

Automate porting from JavaScript
I understand that this is a port from https://highlightjs.org

I guess the port was automated to some extent, because language files contain the comment:

// GENERATED CODE - DO NOT MODIFY BY HAND

This package now has quite a number of bugs that are not reproducible with the original Highlight.js, like

#36

#37

Also I can see no progress on older issues.

Can you please share the process of this porting so anyone can fast-forward the changes in Highlight.js? These then can be contributed here or implemented in a fork. This would solve most of the problems.

Or share any hints if the port was manual.

@pd4d10 @shreyas1599
opened by alexeyinkin 0

Multiline string literal breaks java highlighting

For this input:

class MyClass {
  private string str = "abc";
}

we get the correct result:

Make this string literal multiline:

class MyClass {
  private string str = """
  abc
  """;
}

and nothing is parsed:

Note that language is also null although java is explicitly passed.

This codepen shows that the original highlightjs can handle multiline string literals: https://codepen.io/alexey-inkin/pen/abYYVOj

Code

import 'package:highlight/highlight_core.dart';
import 'package:highlight/languages/java.dart';

void main() {
  highlight.registerLanguage('java', java);

  const text = '''
class MyClass {
  private string str = "abc";
}
''';
  final result = highlight.parse(text, language: 'java');
  print(result.nodes);

  const textMultiline = '''
class MyClass {
  private string str = """
  abc
  """;
}
''';
  final resultMultiline = highlight.parse(textMultiline, language: 'java');
  print(resultMultiline.nodes);
}

Output

[Instance of 'Node', Instance of 'Node', Instance of 'Node', Instance of 'Node', Instance of 'Node', Instance of 'Node', Instance of 'Node']
[Instance of 'Node']

opened by alexeyinkin 0

Number sign (#) breaks java highlighting

For this input:

class MyClass {
}

we get the correct result:

Add a number sign:

class MyClass {
}#

and nothing is parsed:

Note that language is also null although java is explicitly passed.

Code

import 'package:highlight/highlight_core.dart';
import 'package:highlight/languages/java.dart';

void main() {
  highlight.registerLanguage('java', java);

  const text = '''
class MyClass {
}
''';
  final result = highlight.parse(text, language: 'java');
  print(result.nodes);

  const textNumber = '''
class MyClass {
}#
''';
  final resultNumber = highlight.parse(textNumber, language: 'java');
  print(resultNumber.nodes);
}

Output

[Instance of 'Node', Instance of 'Node', Instance of 'Node']
[Instance of 'Node']

opened by alexeyinkin 0

Syntax highlighting for Dart and Flutter

Related tags

Overview

highlight.dart

References

License

Comments

List will be trimed in

Add method to get a `TextEditingController`

Double quotes (") are not escaped

Automate porting from JavaScript

Multiline string literal breaks java highlighting

Number sign (#) breaks java highlighting

Owner

GitTouch

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