feat: import Chinese-localized Buzz source snapshot

Signed-off-by: cls_宁波本机 <908705107@qq.com>

mobile/lib/shared/syntax_highlight.dart

@@ -0,0 +1,107 @@
+import 'package:flutter/material.dart';
+import 'package:highlight/highlight.dart' show highlight, Node;
+
+const highlightLightTheme = <String, TextStyle>{
+  'keyword': TextStyle(color: Color(0xFFa626a4)),
+  'built_in': TextStyle(color: Color(0xFF0184bc)),
+  'type': TextStyle(color: Color(0xFF0184bc)),
+  'literal': TextStyle(color: Color(0xFF0184bc)),
+  'number': TextStyle(color: Color(0xFF986801)),
+  'string': TextStyle(color: Color(0xFF50a14f)),
+  'symbol': TextStyle(color: Color(0xFF50a14f)),
+  'comment': TextStyle(color: Color(0xFFa0a1a7), fontStyle: FontStyle.italic),
+  'doctag': TextStyle(color: Color(0xFFa0a1a7), fontStyle: FontStyle.italic),
+  'meta': TextStyle(color: Color(0xFF986801)),
+  'attr': TextStyle(color: Color(0xFF986801)),
+  'attribute': TextStyle(color: Color(0xFF986801)),
+  'title': TextStyle(color: Color(0xFF4078f2)),
+  'title.class_': TextStyle(color: Color(0xFFc18401)),
+  'title.function_': TextStyle(color: Color(0xFF4078f2)),
+  'name': TextStyle(color: Color(0xFFe45649)),
+  'tag': TextStyle(color: Color(0xFFe45649)),
+  'selector-tag': TextStyle(color: Color(0xFFe45649)),
+  'params': TextStyle(color: Color(0xFF383a42)),
+  'variable': TextStyle(color: Color(0xFFe45649)),
+  'subst': TextStyle(color: Color(0xFFe45649)),
+  'section': TextStyle(color: Color(0xFF4078f2)),
+  'bullet': TextStyle(color: Color(0xFF4078f2)),
+  'link': TextStyle(color: Color(0xFF4078f2)),
+  'addition': TextStyle(color: Color(0xFF50a14f)),
+  'deletion': TextStyle(color: Color(0xFFe45649)),
+};
+
+const highlightDarkTheme = <String, TextStyle>{
+  'keyword': TextStyle(color: Color(0xFFc678dd)),
+  'built_in': TextStyle(color: Color(0xFF56b6c2)),
+  'type': TextStyle(color: Color(0xFF56b6c2)),
+  'literal': TextStyle(color: Color(0xFF56b6c2)),
+  'number': TextStyle(color: Color(0xFFd19a66)),
+  'string': TextStyle(color: Color(0xFF98c379)),
+  'symbol': TextStyle(color: Color(0xFF98c379)),
+  'comment': TextStyle(color: Color(0xFF5c6370), fontStyle: FontStyle.italic),
+  'doctag': TextStyle(color: Color(0xFF5c6370), fontStyle: FontStyle.italic),
+  'meta': TextStyle(color: Color(0xFFd19a66)),
+  'attr': TextStyle(color: Color(0xFFd19a66)),
+  'attribute': TextStyle(color: Color(0xFFd19a66)),
+  'title': TextStyle(color: Color(0xFF61afef)),
+  'title.class_': TextStyle(color: Color(0xFFe5c07b)),
+  'title.function_': TextStyle(color: Color(0xFF61afef)),
+  'name': TextStyle(color: Color(0xFFe06c75)),
+  'tag': TextStyle(color: Color(0xFFe06c75)),
+  'selector-tag': TextStyle(color: Color(0xFFe06c75)),
+  'params': TextStyle(color: Color(0xFFabb2bf)),
+  'variable': TextStyle(color: Color(0xFFe06c75)),
+  'subst': TextStyle(color: Color(0xFFe06c75)),
+  'section': TextStyle(color: Color(0xFF61afef)),
+  'bullet': TextStyle(color: Color(0xFF61afef)),
+  'link': TextStyle(color: Color(0xFF61afef)),
+  'addition': TextStyle(color: Color(0xFF98c379)),
+  'deletion': TextStyle(color: Color(0xFFe06c75)),
+};
+
+List<InlineSpan> highlightCode(
+  String code,
+  String language,
+  Map<String, TextStyle> theme,
+  TextStyle baseStyle,
+) {
+  try {
+    if (language.isEmpty) return [TextSpan(text: code, style: baseStyle)];
+    final result = highlight.parse(code, language: language);
+    if (result.nodes == null) return [TextSpan(text: code, style: baseStyle)];
+    return buildSpans(result.nodes!, theme, baseStyle);
+  } catch (_) {
+    return [TextSpan(text: code, style: baseStyle)];
+  }
+}
+
+List<InlineSpan> buildSpans(
+  List<Node> nodes,
+  Map<String, TextStyle> theme,
+  TextStyle baseStyle, {
+  int maxDepth = 10,
+}) {
+  final spans = <InlineSpan>[];
+  for (final node in nodes) {
+    if (maxDepth <= 0) {
+      if (node.value != null) {
+        spans.add(TextSpan(text: node.value, style: baseStyle));
+      }
+      continue;
+    }
+    if (node.children != null && node.children!.isNotEmpty) {
+      final childStyle = node.className != null
+          ? baseStyle.merge(theme[node.className])
+          : baseStyle;
+      spans.addAll(
+        buildSpans(node.children!, theme, childStyle, maxDepth: maxDepth - 1),
+      );
+    } else if (node.value != null) {
+      final style = node.className != null
+          ? baseStyle.merge(theme[node.className])
+          : baseStyle;
+      spans.add(TextSpan(text: node.value, style: style));
+    }
+  }
+  return spans;
+}