[feat] change file saving to msgpack

src/ts/storage/risuSave.ts

@@ -0,0 +1,31 @@
+import { decode, encode } from "@msgpack/msgpack";
+import { isEqual } from "lodash";
+import pako from "pako";
+
+
+export function encodeRisuSave(data:any){
+    const risuSaveHeader = new Uint8Array(Buffer.from("\u0000\u0000RISU",'utf-8'))
+    const encoded = encode(data)
+    const mergedArray = new Uint8Array(risuSaveHeader.length + encoded.length);
+    mergedArray.set(risuSaveHeader);
+    mergedArray.set(encoded, risuSaveHeader.length);
+    return mergedArray
+}
+
+export function decodeRisuSave(data:Uint8Array){
+    const risuSaveHeader = new Uint8Array(Buffer.from("\u0000\u0000RISU",'utf-8'))
+    const sub = data.subarray(0, risuSaveHeader.length)
+    if(isEqual(sub, risuSaveHeader)){
+        try {
+            const realData = data.subarray(risuSaveHeader.length)
+            const dec = decode(realData)
+            return dec
+        } catch (error) {
+            console.error(error)
+            throw error
+        }
+    }
+    else{
+        return JSON.parse(Buffer.from(pako.inflate(Buffer.from(data))).toString('utf-8'))
+    }
+}