feat : cp949ToUTF8 for c

app/API/submission.ts

@@ -13,21 +13,35 @@ import {
   NotFoundError,
   RequestTooLongError,
 } from "~/util/errors";
+import { cp949ToUTF8 } from "~/util/file";
 
 export async function submit(
   token: string,
   problem_id: string,
   formdata: FormData
 ): Promise<SubmissionResponse> {
+  if (formdata.get("language") === "c") {
+    const fileList = formdata.getAll("codes") as File[];
+    if (fileList.length > 0) {
+      formdata.delete("codes");
+      const processedFiles = await Promise.all(
+        fileList.map(async (file) => {
+          return await cp949ToUTF8(file);
+        })
+      );
+      processedFiles.forEach((file) => formdata.append("codes", file));
+    }
+  }
   if (formdata.get("language") === "java") {
     const fileList = formdata.getAll("codes") as File[];
     const code = formdata.get("code") as string;
     if (fileList.length > 0) {
       formdata.delete("codes");
       const processedFiles = await Promise.all(
-        fileList.map(async (file) => await removePackageStatementFromFile(file))
+        fileList.map(async (file) => {
+          return await removePackageStatementFromFile(file);
+        })
       );
-
       processedFiles.forEach((file) => formdata.append("codes", file));
     } else if (code !== "") {
       formdata.delete("code");

app/util/file.ts

@@ -0,0 +1,25 @@
+import { Buffer } from "buffer";
+import iconv from "iconv-lite";
+import isUtf8 from "isutf8";
+
+export async function cp949ToUTF8(file: File): Promise<File> {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader();
+
+    reader.onload = async () => {
+      const result = reader.result as ArrayBuffer;
+      const buf = Buffer.from(result);
+      if (isUtf8(buf)) {
+        resolve(file);
+      }
+      const decoded = iconv.decode(buf, "cp949");
+      console.log(decoded);
+      resolve(new File([decoded], file.name, { type: file.type }));
+    };
+
+    reader.onerror = () => {
+      reject(reader.error);
+    };
+    reader.readAsArrayBuffer(file);
+  });
+}

package.json

@@ -17,10 +17,13 @@
     "@remix-run/node": "^2.9.2",
     "@remix-run/react": "^2.9.2",
     "@remix-run/serve": "^2.9.2",
+    "buffer": "^6.0.3",
     "cross-env": "^7.0.3",
     "exceljs": "^4.4.0",
     "file-saver": "^2.0.5",
+    "iconv-lite": "^0.6.3",
     "isbot": "^3.6.8",
+    "isutf8": "^4.0.0",
     "jszip": "^3.10.1",
     "prismjs": "^1.29.0",
     "react": "^18.2.0",