judge: ignore stdout in fileIO mode

packages/hydrojudge/package.json

@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.17.2",
+    "version": "2.17.3",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",

packages/hydrojudge/src/judge/default.ts

@@ -6,6 +6,7 @@ import { getConfig } from '../config';
 import { CompileError, FormatError } from '../error';
 import { Logger } from '../log';
 import { del, run } from '../sandbox';
+import { CmdFile } from '../sandbox/interface';
 import signals from '../signals';
 import { parseFilename } from '../utils';
 import {
@@ -56,11 +57,9 @@ function judgeCase(c: Case, sid: string) {
         );
         const { code, time_usage_ms, memory_usage_kb } = res;
         let { status } = res;
-        let stdout = { fileId: res.fileIds['stdout'] };
+        let stdout: CmdFile = { fileId: res.fileIds[filename ? 'stdout' : `${filename}.out`] };
         const stderr = { fileId: res.fileIds['stderr'] };
-        if (res.fileIds[`${filename}.out`]) {
-            stdout = { fileId: res.fileIds[`${filename}.out`] };
-        }
+        if (!stdout.fileId) stdout = { content: '' };
         let message: any = '';
         let score = 0;
         if (status === STATUS.STATUS_ACCEPTED) {