From f1c880e7d030fe23dfab8a05700ca3b38b27a07d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9E=AB=E8=B0=B7=E5=89=91=E4=BB=99?= <mapaler@163.com>
Date: Thu, 21 Oct 2021 19:40:25 +0800
Subject: [PATCH] =?UTF-8?q?=E5=8E=BB=E5=93=AA=E9=87=8C=E6=89=BENode?=
 =?UTF-8?q?=E7=9A=84=E5=86=85=E5=AE=B9=E5=91=A2?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 data/extlist.ts | 63 +++++++++++++++++++++++++++++++++++++++++++++++++
 data/index.ts   |  5 +++-
 data/run.bat    |  2 +-
 3 files changed, 68 insertions(+), 2 deletions(-)
 create mode 100644 data/extlist.ts

diff --git a/data/extlist.ts b/data/extlist.ts
new file mode 100644
index 00000000..18dcfd4b
--- /dev/null
+++ b/data/extlist.ts
@@ -0,0 +1,63 @@
+export interface Extlist {
+  numMons: number;
+  numCards: number;
+  checksum: number;
+  entries: ExtlistEntry[];
+}
+
+export interface ExtlistEntry {
+  isCards: boolean;
+  id: number;
+  width: number;
+  height: number;
+  numFrames: number;
+  frameRate: number;
+  checksum: number;
+  size: number;
+  lastUpdate: number;
+  compressedSize: number;
+  compressedChecksum: number;
+}
+
+export const Extlist = {
+  load(buf: Buffer): Extlist {
+    const numMons = buf.readUInt32LE(0);
+    const numCards = buf.readUInt32LE(4);
+    const sig = buf.readUInt32LE(8);
+    const checksum = buf.readUInt32LE(12);
+    if (sig !== 0x31545845) {  // EXT1
+      throw new Error('invalid extlist.bin signature');
+    }
+
+    const entries: ExtlistEntry[] = [];
+    const numEntries = numMons + numCards;
+    const compressedInfoOffset = 0x10 + numEntries * 24;
+    for (let i = 0; i < numEntries; i++) {
+      const flags = buf.readUInt16LE(0x10 + i * 24 + 0);
+      const isCards = (flags & 0x4000) !== 0;
+      const id = flags & ~0x4000;
+      if (id === 0) continue;
+
+      entries.push({
+        isCards,
+        id,
+        width: buf.readUInt16LE(0x10 + i * 24 + 6),
+        height: buf.readUInt16LE(0x10 + i * 24 + 8),
+        numFrames: buf.readUInt16LE(0x10 + i * 24 + 10),
+        frameRate: buf.readUInt16LE(0x10 + i * 24 + 12),
+        checksum: buf.readUInt16LE(0x10 + i * 24 + 14),
+        size: buf.readUInt32LE(0x10 + i * 24 + 16),
+        lastUpdate: buf.readUInt32LE(0x10 + i * 24 + 20),
+        compressedSize: buf.readUInt32LE(compressedInfoOffset + i * 8 + 0),
+        compressedChecksum: buf.readUInt32LE(compressedInfoOffset + i * 8 + 4),
+      });
+    }
+
+    return {
+      numMons,
+      numCards,
+      checksum,
+      entries,
+    };
+  },
+};
diff --git a/data/index.ts b/data/index.ts
index 6479ec74..1272b04b 100644
--- a/data/index.ts
+++ b/data/index.ts
@@ -1,4 +1,5 @@
 import { basename } from "https://deno.land/std/path/mod.ts";
+import { Extlist } from './extlist.ts';
 const regions = [
 	{path: 'pad', regionID: 'JA', baseJsonURL: 'https://dl.padsv.gungho.jp/base_adr.json'},
 	{path: 'padEN', regionID: 'NA', baseJsonURL: 'https://dl-na.padsv.gungho.jp/base-na-adr.json'},
@@ -27,4 +28,6 @@ for (const region of regions) {
 	const extdllistUrl = `${baseJsonData.efl}/extdllist.bin`;
 	console.log(`正在下载 ${extdllistUrl}`);
 	const extdllistResponse = await downloadFile(extdllistUrl, region.path);
-}
\ No newline at end of file
+	const extlist = Extlist.load(extlistResponse);
+	extlist.entries.forEach((item)=>{console.log(item)});
+} 
\ No newline at end of file
diff --git a/data/run.bat b/data/run.bat
index f9fac20a..174e8803 100644
--- a/data/run.bat
+++ b/data/run.bat
@@ -1,2 +1,2 @@
 @echo off
-deno run --allow-net --allow-read --allow-write --unstable index.js
\ No newline at end of file
+deno run --allow-net --allow-read --allow-write --unstable index.ts
\ No newline at end of file