перенос пакета подсветки в проект

- код теперь выделяемый
- удалены неиспользуемые темы

Author: iska9der

lib/presentation/widget/html_view_widget.dart

@@ -5,6 +5,7 @@ import 'package:flutter/services.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_highlight/flutter_highlight.dart';
 import 'package:flutter_highlight/themes/darcula.dart';
+import 'package:flutter_highlight/themes/github_gist.dart';
 import 'package:flutter_svg/flutter_svg.dart';
 import 'package:flutter_widget_from_html_core/flutter_widget_from_html_core.dart';
 import 'package:fwfh_svg/fwfh_svg.dart';
@@ -362,7 +363,11 @@ abstract class CustomBuildOp {
     );
     final padding = const EdgeInsets.all(12);
 
-    final codeTheme = darculaTheme;
+    final codeTheme = switch (context.theme.brightness) {
+      Brightness.dark => darculaTheme,
+      Brightness.light => githubGistTheme,
+    };
+
     final bgColor =
         codeTheme['root']?.backgroundColor ??
         context.theme.colors.cardHighlight;

packages/flutter_highlight/.metadata

@@ -0,0 +1,10 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: 20e59316b8b8474554b38493b8ca888794b0234a
+  channel: stable
+
+project_type: package

packages/flutter_highlight/CHANGELOG.md

@@ -0,0 +1,112 @@
+# [0.7.0](https://github.com/git-touch/highlight/compare/v0.6.0...v.7.0) (2021-03-07)
+
+### Features
+
+- null safety ([696206a](https://github.com/git-touch/highlight/commit/696206ad53dac56d5653622617ba6fda7c857c1a))
+
+# [0.6.0](https://github.com/git-touch/highlight/compare/v0.5.0...v0.6.0) (2020-02-04)
+
+### Bug Fixes
+
+- pedantic lints ([37b4469](https://github.com/git-touch/highlight/commit/37b4469c90d775ab559b12da20596e2f2d87a6fb))
+
+# [0.5.0](https://github.com/git-touch/highlight/compare/v0.4.1...v0.5.0) (2019-11-14)
+
+### Bug Fixes
+
+- richtext ([036f5a9](https://github.com/git-touch/highlight/commit/036f5a98e395b10a8c3c7cd7821a4044cc96ff6c))
+
+### Features
+
+- add gn and solidity ([196c1c4](https://github.com/git-touch/highlight/commit/196c1c4a11da5619c3c90171cd501043daac30fd))
+
+## [0.4.1](https://github.com/git-touch/highlight/compare/v0.4.0...v0.4.1) (2019-11-12)
+
+### Bug Fixes
+
+- update path ([9cfeb1a](https://github.com/git-touch/highlight/commit/9cfeb1a77c83794e8726b3e03eb3620634f97970))
+
+### Features
+
+- add graphql and vue ([5f558bf](https://github.com/git-touch/highlight/commit/5f558bfd6511a1a84d2b9f0949bb0282a3139e07))
+- add highlight core module for more control ([c2bee79](https://github.com/git-touch/highlight/commit/c2bee79b1707c85e7a36f8dbc0dcfa3bdfdfca88))
+
+# [0.4.0](https://github.com/git-touch/highlight/compare/v0.3.0...v0.4.0) (2019-09-20)
+
+### Bug Fixes
+
+- use plaintext mode if no language match ([3c8bb95](https://github.com/git-touch/highlight/commit/3c8bb95f28e8248f2b156b6343ba7f2c4a6c8243))
+- **gallery:** correct language ([77855a0](https://github.com/git-touch/highlight/commit/77855a027ca206a615ef09c8314c21bc4163d219))
+- drop dart:io dependency for web ([3aa0155](https://github.com/git-touch/highlight/commit/3aa0155d2d04946682a95bd55b421a697171bab1))
+
+### Features
+
+- auto detection param ([de22fa4](https://github.com/git-touch/highlight/commit/de22fa41090283bc4d2ec56ca934cb29bd09f236))
+
+# [0.3.0](https://github.com/git-touch/highlight/compare/v0.2.0...v0.3.0) (2019-09-02)
+
+### Bug Fixes
+
+- background color with image ([0a2d780](https://github.com/git-touch/highlight/commit/0a2d7802a7bd449a853195977e09dbd92143b36a))
+- example map gen ([f3f6bdd](https://github.com/git-touch/highlight/commit/f3f6bddb23e3024bf3a6dc6883287e56bba250ac))
+- remove deprecated theme ([2e492b6](https://github.com/git-touch/highlight/commit/2e492b6eb18290482c58ce1f5d2ca9068f212e49))
+
+### Features
+
+- **gallery:** add source code link ([3bbc1c1](https://github.com/git-touch/highlight/commit/3bbc1c15d5b1398e05463cc36e6fb7827f514198))
+
+# [0.2.0](https://github.com/git-touch/highlight/compare/v0.1.0...v0.2.0) (2019-08-26)
+
+### Bug Fixes
+
+- drop dart:io dependency at platform web ([05963ef](https://github.com/git-touch/highlight/commit/05963ef3aaf6a6ced1f295765dce207750f0be65))
+- rename folder following pub ([510d607](https://github.com/git-touch/highlight/commit/510d6073abdc7cf05e73040ce85eb4dc1124f42c))
+
+### Features
+
+- add padding and textStyle props ([d4ed23d](https://github.com/git-touch/highlight/commit/d4ed23d01248e9e477087c9bc91b2a3ad3ab96c0))
+
+# [0.1.0](https://github.com/git-touch/highlight/compare/2ca2e95262741d908de1b2ae769770de1f80756c...v0.1.0) (2019-08-25)
+
+### Bug Fixes
+
+- alias register ([bfc594e](https://github.com/git-touch/highlight/commit/bfc594ea3dc8a6272fb9ad25f93596975b13e9c6))
+- catch int parse error ([41aac3d](https://github.com/git-touch/highlight/commit/41aac3d007d1598456d0becd99743b88da3e1b79))
+- className empty ([b16005e](https://github.com/git-touch/highlight/commit/b16005ea72022f929501b8e441e5128151a5df2c))
+- dropdown menu style ([9bcd55c](https://github.com/git-touch/highlight/commit/9bcd55ca1e7782e7166b2e90a772a334664baf33))
+- find same mode instances for reusing ([a0bffd5](https://github.com/git-touch/highlight/commit/a0bffd5254c793acf3bcd0b170d837c0e2b31cec))
+- flutter highlight traverse ([6ae2549](https://github.com/git-touch/highlight/commit/6ae2549a7f1c929069a96208aed74b07d08c17cd))
+- join regexp ([28a4e32](https://github.com/git-touch/highlight/commit/28a4e32c004f84e8c60ce2780d032356ac827e38))
+- keyword match reference language ([4ec6476](https://github.com/git-touch/highlight/commit/4ec647655f2b4321845c1f51cbcf18e2ed1fea24))
+- languages alias ([1a88ff6](https://github.com/git-touch/highlight/commit/1a88ff601c24c824503c4f77b24e159eb534ed89))
+- match sub language ([7b0e509](https://github.com/git-touch/highlight/commit/7b0e509046b2f9d6487373de518c0db274bd6307))
+- merge styles of same selector ([b678d03](https://github.com/git-touch/highlight/commit/b678d03fffa4666ab37909aaeabc290675777409))
+- normalize types ([74cd977](https://github.com/git-touch/highlight/commit/74cd9770c96ccce50d1e7d3082675dfff80a057b))
+- regexp with multiline flag ([e9f2a81](https://github.com/git-touch/highlight/commit/e9f2a81f50017b45f9f30e956642a51e3b0fedd4))
+- stack overflow, update test cases ([1117023](https://github.com/git-touch/highlight/commit/1117023db772bafd8de084f141b6c1b60a9dd3d9))
+- sub language field type ([24c8dc1](https://github.com/git-touch/highlight/commit/24c8dc11d89cc14f1583dbbf9f03f26516804af0))
+- terminators filter ([2bdfc37](https://github.com/git-touch/highlight/commit/2bdfc374b7c9bdbf2f41bef5c23e7b2a1c5552f8))
+- trim result before comparing ([f7d9680](https://github.com/git-touch/highlight/commit/f7d968010491b07b3297442fd6ae7a1fd9927e3c))
+- try to circular object ([9099402](https://github.com/git-touch/highlight/commit/909940208eb1207bb032414f74bcf4c15959fcc8))
+
+### Features
+
+- **gallery:** add ga ([8e5b8c0](https://github.com/git-touch/highlight/commit/8e5b8c0ac0027aa3e1439cacebdf6a3288804efe))
+- default style ([2d1e72f](https://github.com/git-touch/highlight/commit/2d1e72f2d4f88c34c4dc56302b4d101e70a6257c))
+- use default theme ([505aa11](https://github.com/git-touch/highlight/commit/505aa113051bb674dced4300600e1af5d1f146b1))
+- **gallery:** add language select ([acb429c](https://github.com/git-touch/highlight/commit/acb429c31f3c3b751b847e2b2a66541d10d829fa))
+- add container background color ([7edd5aa](https://github.com/git-touch/highlight/commit/7edd5aab0bdbebafd2172c8dc234f8feddf37258))
+- add generated style files ([4da9ce8](https://github.com/git-touch/highlight/commit/4da9ce867691ac95bc924d08dc09a74b76baec48))
+- add highlighter widget ([6f8b529](https://github.com/git-touch/highlight/commit/6f8b5299366015d9a7ae28d00f26342df31584db))
+- add refs to fix circular issue ([4470f4a](https://github.com/git-touch/highlight/commit/4470f4a0bf59b46d64b86bc07840b2062a458e0a))
+- add tools ([2ca2e95](https://github.com/git-touch/highlight/commit/2ca2e95262741d908de1b2ae769770de1f80756c))
+- change exposed api ([11b8c9c](https://github.com/git-touch/highlight/commit/11b8c9cd1e3d9bb1848d6e3fb9d15dc70d945840))
+- compile mode ([2811fbb](https://github.com/git-touch/highlight/commit/2811fbb1814995bc15c48710b6ed0bea2b198767))
+- copy flutter_highlight to gallery, with flutter_web replacement ([4ea17fc](https://github.com/git-touch/highlight/commit/4ea17fc3683ce7bfcff3f43068e8a4b3b69aa3f0))
+- core highlight ([3f8ca78](https://github.com/git-touch/highlight/commit/3f8ca78ea2cf6c58bde4ead2cbfdc9a1485e1bd4))
+- json generator ([c5f9e47](https://github.com/git-touch/highlight/commit/c5f9e47ed186cf720e198974d6f40cc9e829b69d))
+- output tree node instead of html string ([64376d7](https://github.com/git-touch/highlight/commit/64376d7e6df73b4492318292123efe18ab80cc4b))
+- register all languages by default ([33299d3](https://github.com/git-touch/highlight/commit/33299d3cb4d37569e061039a648e2e96eeb1e049))
+- select highlight theme at gallery ([063c06c](https://github.com/git-touch/highlight/commit/063c06ce74e7cf142a26cc45df744c9cf0b43938))
+- support sub languages ([a4c419b](https://github.com/git-touch/highlight/commit/a4c419b2689e4c0e15e630c6cb8007ee7ac8f35a))
+- use es modules ([63778cb](https://github.com/git-touch/highlight/commit/63778cbaa3881b0adbed49d9002193c14b7e30e6))

packages/flutter_highlight/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019 Rongjian Zhang
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

packages/flutter_highlight/README.md

@@ -0,0 +1,54 @@
+# flutter_highlight
+
+[![pub](https://img.shields.io/pub/v/flutter_highlight)](https://pub.dev/packages/flutter_highlight)
+
+Syntax highlighter for Flutter. https://git-touch.github.io/highlight/
+
+## Usage
+
+```dart
+import 'package:flutter/material.dart';
+import 'package:flutter_highlight/flutter_highlight.dart';
+import 'package:flutter_highlight/themes/github.dart';
+
+class MyWidget extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    var code = '''main() {
+  print("Hello, World!");
+}
+''';
+
+    return HighlightView(
+      // The original code to be highlighted
+      code,
+
+      // Specify language
+      // It is recommended to give it a value for performance
+      language: 'dart',
+
+      // Specify highlight theme
+      // All available themes are listed in `themes` folder
+      theme: githubTheme,
+
+      // Specify padding
+      padding: EdgeInsets.all(12),
+
+      // Specify text style
+      textStyle: TextStyle(
+        fontFamily: 'My awesome monospace font',
+        fontSize: 16,
+      ),
+    );
+  }
+}
+```
+
+## References
+
+- [All available languages](https://github.com/pd4d10/highlight/tree/master/highlight/lib/languages)
+- [All available themes](https://github.com/pd4d10/highlight/blob/master/flutter_highlight/lib/themes)
+
+## License
+
+MIT

packages/flutter_highlight/lib/flutter_highlight.dart

@@ -0,0 +1,110 @@
+// ignore_for_file: no_leading_underscores_for_local_identifiers
+
+import 'package:flutter/material.dart';
+import 'package:highlight/highlight.dart' show highlight, Node;
+
+/// Highlight Flutter Widget
+class HighlightView extends StatelessWidget {
+  /// The original code to be highlighted
+  final String source;
+
+  /// Highlight language
+  ///
+  /// It is recommended to give it a value for performance
+  ///
+  /// [All available languages](https://github.com/pd4d10/highlight/tree/master/highlight/lib/languages)
+  final String? language;
+
+  /// Highlight theme
+  ///
+  /// [All available themes](https://github.com/pd4d10/highlight/blob/master/flutter_highlight/lib/themes)
+  final Map<String, TextStyle> theme;
+
+  /// Padding
+  final EdgeInsetsGeometry padding;
+
+  /// Text styles
+  ///
+  /// Specify text styles such as font family and font size
+  final TextStyle? textStyle;
+
+  HighlightView(
+    String input, {
+    Key? key,
+    this.language,
+    this.theme = const {},
+    this.padding = EdgeInsets.zero,
+    this.textStyle,
+    int tabSize = 8, // https://github.com/flutter/flutter/issues/50087
+  })  : source = input.replaceAll('\t', ' ' * tabSize),
+        super(key: key);
+
+  List<TextSpan> _convert(List<Node> nodes) {
+    List<TextSpan> spans = [];
+    var currentSpans = spans;
+    List<List<TextSpan>> stack = [];
+
+    void _traverse(Node node) {
+      if (node.value != null) {
+        currentSpans.add(node.className == null
+            ? TextSpan(text: node.value)
+            : TextSpan(text: node.value, style: theme[node.className!]));
+      } else if (node.children != null) {
+        List<TextSpan> tmp = [];
+        currentSpans
+            .add(TextSpan(children: tmp, style: theme[node.className!]));
+        stack.add(currentSpans);
+        currentSpans = tmp;
+
+        for (var n in node.children!) {
+          _traverse(n);
+          if (n == node.children!.last) {
+            currentSpans = stack.isEmpty ? spans : stack.removeLast();
+          }
+        }
+      }
+    }
+
+    for (var node in nodes) {
+      _traverse(node);
+    }
+
+    return spans;
+  }
+
+  static const _rootKey = 'root';
+  static const _defaultFontColor = Color(0xff000000);
+  static const _defaultBackgroundColor = Color(0xffffffff);
+
+  // dart:io is not available at web platform currently
+  // See: https://github.com/flutter/flutter/issues/39998
+  // So we just use monospace here for now
+  static const _defaultFontFamily = 'monospace';
+
+  @override
+  Widget build(BuildContext context) {
+    var _textStyle = TextStyle(
+      fontFamily: _defaultFontFamily,
+      color: theme[_rootKey]?.color ?? _defaultFontColor,
+    );
+    if (textStyle != null) {
+      _textStyle = _textStyle.merge(textStyle);
+    }
+
+    return DecoratedBox(
+      decoration: BoxDecoration(
+        color: theme[_rootKey]?.backgroundColor ?? _defaultBackgroundColor,
+      ),
+      child: Padding(
+        padding: padding,
+        child: SelectableText.rich(
+          TextSpan(
+            style: _textStyle,
+            children:
+                _convert(highlight.parse(source, language: language).nodes!),
+          ),
+        ),
+      ),
+    );
+  }
+}