From 1f2147ef72dc8e818228beeec352059fbaa60f56 Mon Sep 17 00:00:00 2001
From: nyne <me@nyne.dev>
Date: Mon, 5 May 2025 12:51:36 +0800
Subject: [PATCH] Add support for gbk. Close #354

---
 assets/init.js                | 26 ++++++++++++++++++++++++++
 lib/foundation/js_engine.dart |  6 ++++++
 pubspec.lock                  |  8 ++++++++
 pubspec.yaml                  |  1 +
 4 files changed, 41 insertions(+)

diff --git a/assets/init.js b/assets/init.js
index 7a016e3..b061bbd 100644
--- a/assets/init.js
+++ b/assets/init.js
@@ -39,6 +39,32 @@ let Convert = {
         });
     },
 
+    /**
+     * @param str {string}
+     * @returns {ArrayBuffer}
+     */
+    encodeGbk: (str) => {
+        return sendMessage({
+            method: "convert",
+            type: "gbk",
+            value: str,
+            isEncode: true
+        });
+    },
+
+    /**
+     * @param value {ArrayBuffer}
+     * @returns {string}
+     */
+    decodeGbk: (value) => {
+        return sendMessage({
+            method: "convert",
+            type: "gbk",
+            value: value,
+            isEncode: false
+        });
+    },
+
     /**
      * @param {ArrayBuffer} value
      * @returns {string}
diff --git a/lib/foundation/js_engine.dart b/lib/foundation/js_engine.dart
index 40fde70..633cd92 100644
--- a/lib/foundation/js_engine.dart
+++ b/lib/foundation/js_engine.dart
@@ -3,6 +3,7 @@ import 'dart:io';
 import 'dart:math' as math;
 import 'package:crypto/crypto.dart';
 import 'package:dio/io.dart';
+import 'package:enough_convert/enough_convert.dart';
 import 'package:flutter/foundation.dart' show protected;
 import 'package:flutter/services.dart';
 import 'package:html/parser.dart' as html;
@@ -372,6 +373,11 @@ mixin class _JSEngineApi {
       switch (type) {
         case "utf8":
           return isEncode ? utf8.encode(value) : utf8.decode(value);
+        case "gbk":
+          final codec = const GbkCodec();
+          return isEncode
+              ? Uint8List.fromList(codec.encode(value))
+              : codec.decode(value);
         case "base64":
           return isEncode ? base64Encode(value) : base64Decode(value);
         case "md5":
diff --git a/pubspec.lock b/pubspec.lock
index 811ca1c..1d4a5da 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -178,6 +178,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.7.0"
+  enough_convert:
+    dependency: "direct main"
+    description:
+      name: enough_convert
+      sha256: c67d85ca21aaa0648f155907362430701db41f7ec8e6501a58ad9cd9d8569d01
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.6.0"
   fake_async:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index 708f5b7..9655157 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -85,6 +85,7 @@ dependencies:
   flutter_localizations:
     sdk: flutter
   yaml: ^3.1.3
+  enough_convert: ^1.6.0
 
 dev_dependencies:
   flutter_test: