fix: unable to save when saving large content

Author: YuxinZhaozyx

README.md

@@ -81,6 +81,8 @@ The label of a draw.io image block can be configured in the plugin settings.
 
 ## Changelog
 
++ v0.5.3
+    + Fix: unable to save when saving large content
 + v0.5.2
     + Optimize: Excalidraw contents of SVG/PNG placeholder image are empty
 + v0.5.1

README_zh_CN.md

@@ -70,6 +70,8 @@
 
 ## 更新日志
 
++ v0.5.3
+    + 修复缺陷：内容过多时无法保存
 + v0.5.2
     + 优化：SVG/PNG占位图像编辑时都为空
 + v0.5.1

package.json

@@ -1,6 +1,6 @@
 {
   "name": "siyuan-embed-drawio",
-  "version": "0.5.2",
+  "version": "0.5.3",
   "type": "module",
   "description": "This is a plugin for siyuan",
   "author": "",

plugin.json

@@ -2,7 +2,7 @@
   "name": "siyuan-embed-drawio",
   "author": "Yuxin Zhao",
   "url": "https://github.com/YuxinZhaozyx/siyuan-embed-drawio",
-  "version": "0.5.2",
+  "version": "0.5.3",
   "minAppVersion": "3.0.0",
   "disabledInPublish": true,
   "backends": [

src/utils/index.ts

@@ -20,7 +20,12 @@ export function unescapeHTML(str: string): string {
 export function unicodeToBase64(str: string): string {
   const encoder = new TextEncoder();
   const bytes = encoder.encode(str);
-  return btoa(String.fromCharCode(...bytes));
+  let binary = '';
+  const len = bytes.length;
+  for (let i = 0; i < len; i++) {
+    binary += String.fromCharCode(bytes[i]);
+  }
+  return btoa(binary);
 }
 
 export function base64ToUnicode(base64: string): string {
@@ -43,7 +48,11 @@ export function base64ToBuffer(base64: string): ArrayBuffer {
 }
 
 export function bufferToBase64(buffer: ArrayBuffer): string {
-  const binary = String.fromCharCode(...new Uint8Array(buffer));
+  const bytes = new Uint8Array(buffer);
+  let binary = '';
+  for (let i = 0; i < bytes.length; i++) {
+    binary += String.fromCharCode(bytes[i]);
+  }
   return btoa(binary);
 }
 
@@ -99,7 +108,10 @@ export function base64ToArray(base64: string): Uint8Array {
 }
 
 export function arrayToBase64(array: Uint8Array): string {
-  const binary = String.fromCharCode(...array);
+  let binary = '';
+  for (let i = 0; i < array.length; i++) {
+    binary += String.fromCharCode(array[i]);
+  }
   return btoa(binary);
 }