From a459959d5a970c305131bb5d26cd43cc7df59065 Mon Sep 17 00:00:00 2001
From: Hiroshiba Kazuyuki <kazuyuki_hiroshiba@dwango.co.jp>
Date: Wed, 22 Jan 2025 13:46:46 +0900
Subject: [PATCH] =?UTF-8?q?refactor:=20vvpp=E3=83=95=E3=82=A1=E3=82=A4?=
 =?UTF-8?q?=E3=83=AB=E3=81=AE=E5=88=86=E5=89=B2=E5=87=A6=E7=90=86=E3=81=AB?=
 =?UTF-8?q?=E9=96=A2=E3=81=99=E3=82=8B=E3=82=B3=E3=83=A1=E3=83=B3=E3=83=88?=
 =?UTF-8?q?=E3=82=92=E8=BF=BD=E5=8A=A0=E3=81=97=E3=80=81=E3=83=95=E3=82=A1?=
 =?UTF-8?q?=E3=82=A4=E3=83=AB=E3=83=95=E3=82=A9=E3=83=BC=E3=83=9E=E3=83=83?=
 =?UTF-8?q?=E3=83=88=E6=A4=9C=E5=87=BA=E3=81=AE=E3=83=9E=E3=82=B8=E3=83=83?=
 =?UTF-8?q?=E3=82=AF=E3=83=8A=E3=83=B3=E3=83=90=E3=83=BC=E3=81=AB=E3=83=AA?=
 =?UTF-8?q?=E3=83=B3=E3=82=AF=E3=82=92=E8=BF=BD=E5=8A=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/backend/electron/vvppFile.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/backend/electron/vvppFile.ts b/src/backend/electron/vvppFile.ts
index 464feed280..f97881550d 100644
--- a/src/backend/electron/vvppFile.ts
+++ b/src/backend/electron/vvppFile.ts
@@ -21,6 +21,7 @@ const log = createLogger("vvppFile");
 async function getArchiveFileParts(
   vvppLikeFilePath: string,
 ): Promise<string[]> {
+  // 名前.数値.vvpppの場合は分割されているとみなして連結する
   if (isSplitFile(vvppLikeFilePath)) {
     log.info("vvpp is split, finding other parts...");
     const filePaths = await findSplitFileParts(vvppLikeFilePath);
@@ -270,10 +271,10 @@ async function detectFileFormat(
 ): Promise<"zip" | "7z" | undefined> {
   const buffer = await readFileHeader(filePath);
 
+  // https://www.garykessler.net/library/file_sigs.html#:~:text=7-zip%20compressed%20file
   const SEVEN_ZIP_MAGIC_NUMBER = Buffer.from([
     0x37, 0x7a, 0xbc, 0xaf, 0x27, 0x1c,
   ]);
-
   const ZIP_MAGIC_NUMBER = Buffer.from([0x50, 0x4b, 0x03, 0x04]);
 
   if (isBufferEqual(buffer, SEVEN_ZIP_MAGIC_NUMBER, 6)) {