한글뷰어 기능수정 Ver.01

scratch_check_header.js

@@ -0,0 +1,14 @@
+const fs = require('fs');
+
+const fileData = fs.readFileSync('downloaded_test.hwpx');
+const hex = fileData.subarray(0, 16).toString('hex').toUpperCase();
+console.log('Hex signature of first 16 bytes:');
+console.log(hex.match(/.{1,2}/g).join(' '));
+
+if (hex.startsWith('D0CF11E0A1B11AE1')) {
+    console.log('File type: OLE Compound File (standard HWP binary)');
+} else if (hex.startsWith('504B0304')) {
+    console.log('File type: ZIP file (standard HWPX)');
+} else {
+    console.log('File type: Unknown');
+}