feat: add export via ccv3 charx and json

src/ts/process/processzip.ts

@@ -1,3 +1,5 @@
+import { AppendableBuffer, type LocalWriter, type VirtualWriter } from "../storage/globalApi";
+import * as fflate from "fflate";
 
 export async function processZip(dataArray: Uint8Array): Promise<string> {
     const jszip = await import("jszip");
@@ -12,4 +14,59 @@ export async function processZip(dataArray: Uint8Array): Promise<string> {
     } else {
         throw new Error("No image found in ZIP file");
     }
+}
+
+export class CharXWriter{
+    zip:fflate.Zip
+    writeEnd:boolean = false
+    apb = new AppendableBuffer()
+    constructor(private writer:LocalWriter|WritableStreamDefaultWriter<Uint8Array>|VirtualWriter){
+        const handlerAsync = async (err:Error, dat:Uint8Array, final:boolean) => {
+            if(dat){
+                this.apb.append(dat)
+            }
+            if(final){
+                this.writeEnd = true
+            }
+        }
+
+
+        this.zip = new fflate.Zip()
+        this.zip.ondata = handlerAsync
+    }
+    async init(){
+        //do nothing, just to make compatible with other writer
+    }
+
+    async write(key:string,data:Uint8Array|string){
+        console.log('write',key)
+        let dat:Uint8Array
+        if(typeof data === 'string'){
+            dat = new TextEncoder().encode(data)
+        }
+        else{
+            dat = data
+        }
+        this.writeEnd = false
+        const file = new fflate.ZipDeflate(key, {
+            level: 0
+        });
+        await this.zip.add(file)
+        await file.push(dat, true)
+        await this.writer.write(this.apb.buffer)
+        this.apb.buffer = new Uint8Array(0)
+        if(this.writeEnd){
+            await this.writer.close()
+        }
+        
+    }
+
+    async end(){
+        await this.zip.end()
+        await this.writer.write(this.apb.buffer)
+        this.apb.buffer = new Uint8Array(0)
+        if(this.writeEnd){
+            await this.writer.close()
+        }
+    }
 }