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scripts/gen_arb.dart

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+import 'dart:convert';
+import 'dart:io';
+import 'package:yaml/yaml.dart';
+
+void main() {
+  // 输入文件和输出目录
+  var inputFile = File("./lib/l10n/arb/i18n.yaml");
+  var outDir = Directory("./lib/l10n/arb");
+
+  if (!inputFile.existsSync()) {
+    print('❌ i18n.yaml 文件不存在：$inputFile');
+    exit(1);
+  }
+
+  // 读取并解析 yaml
+  final yamlMap = loadYaml(inputFile.readAsStringSync());
+
+  Map<String, Map<String, dynamic>> arbMaps = {};
+
+  // 递归处理嵌套的 key
+  void processYaml(Map yaml, {String? prefix}) {
+    yaml.forEach((key, value) {
+      if (value is Map && value.values.any((v) => v is Map)) {
+        // 说明还有子层级，递归处理
+        processYaml(value, prefix: prefix == null ? key : "${prefix}_$key");
+      } else if (value is Map) {
+        // 叶子节点：包含 zh/en/description
+        final description = value['description'] ?? '';
+
+        value.forEach((lang, text) {
+          if (lang == 'description') return;
+
+          final arbKey = prefix == null ? key : "${prefix}_$key";
+
+          arbMaps.putIfAbsent(lang, () => {});
+          arbMaps[lang]![arbKey] = text;
+
+          if (description.toString().isNotEmpty) {
+            arbMaps[lang]!['@$arbKey'] = {'description': description};
+          }
+        });
+      }
+    });
+  }
+
+  processYaml(yamlMap);
+
+  // 创建 arb 文件
+  arbMaps.forEach((lang, json) {
+    final file = File("${outDir.path}/app_$lang.arb");
+    final encoder = JsonEncoder.withIndent('  ');
+    file.writeAsStringSync(encoder.convert(json));
+    print('✅ 生成 ${file.path}');
+  });
+
+  // 执行 flutter gen-l10n
+  final result = Process.runSync(
+    "flutter",
+    ["gen-l10n"],
+    runInShell: true, // 确保跨平台可用
+  );
+  if (result.exitCode == 0) {
+    print('✅ flutter gen-l10n 成功');
+  } else {
+    print('❌ flutter gen-l10n 失败：${result.stderr}');
+  }
+}