From 54dfb40a05e2077f02568b310ebb65e7c8d09115 Mon Sep 17 00:00:00 2001
From: hyphen-o <otekapu@gmail.com>
Date: Wed, 2 Oct 2024 18:52:53 +0900
Subject: [PATCH] =?UTF-8?q?.git/index=E3=83=91=E3=82=B9=E3=81=AE=E4=BF=AE?=
 =?UTF-8?q?=E6=AD=A3?=
MIME-Version: 1.0
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---
 src/models/git-index.ts | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/models/git-index.ts b/src/models/git-index.ts
index 777a5db..5cd5efb 100644
--- a/src/models/git-index.ts
+++ b/src/models/git-index.ts
@@ -24,6 +24,7 @@ interface Entry {
 export class GitIndex {
   private entries: Array<Entry>;
   private readonly VERSION = 2;
+  private readonly SIGNATURE = 'DIRC'
 
   constructor(private readonly gitIndexPath: string) {
     this.entries = [];
@@ -61,7 +62,7 @@ export class GitIndex {
     this.entries.push(entry);
   };
 
-  public dumpIndex = async (): Promise<void> => {
+  public dumpIndex = async (): Promise<Array<string>> => {
     const headerBuffer = this.createHeaderBuffer();
     const entriesBuffer = this.createEntriesBuffer();
     const checkSumBuffer = this.createCheckSumBuffer(entriesBuffer);
@@ -72,7 +73,9 @@ export class GitIndex {
       Uint8Array.from(checkSumBuffer),
     ]);
 
-    await writeFile(GIT_INDEX, Uint8Array.from(indexBuffer));
+    await writeFile(this.gitIndexPath, Uint8Array.from(indexBuffer));
+
+    return this.entries.map(entry => entry.filePath)
   };
 
   private parseEntries = async (): Promise<void> => {
@@ -91,8 +94,8 @@ export class GitIndex {
   private createHeaderBuffer = (): Buffer => {
     const headerBuffer = Buffer.alloc(12);
     // https://www.w3schools.com/nodejs/met_buffer_write.asp
-    headerBuffer.write("DIRC", 0, 2);
-    headerBuffer.writeUInt32BE(2, 4);
+    headerBuffer.write(this.SIGNATURE, 0, 2);
+    headerBuffer.writeUInt32BE(this.VERSION, 4);
     headerBuffer.writeUInt32BE(this.entries.length, 8);
     return headerBuffer;
   };