From 16e10a84ce3f34a754698526466b19b59b613500 Mon Sep 17 00:00:00 2001
From: Book Pauk <bookpauk@gmail.com>
Date: Tue, 16 Aug 2022 17:34:17 +0700
Subject: [PATCH] =?UTF-8?q?=D0=94=D0=BE=D0=B1=D0=B0=D0=B2=D0=BB=D0=B5?=
 =?UTF-8?q?=D0=BD=20=D0=BA=D0=BB=D0=B0=D1=81=D1=81=20=D0=B4=D0=BB=D1=8F=20?=
 =?UTF-8?q?=D1=87=D1=82=D0=B5=D0=BD=D0=B8=D1=8F=20zip-=D0=B0=D1=80=D1=85?=
 =?UTF-8?q?=D0=B8=D0=B2=D0=BE=D0=B2?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 server/core/ZipReader.js | 57 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 server/core/ZipReader.js

diff --git a/server/core/ZipReader.js b/server/core/ZipReader.js
new file mode 100644
index 0000000..4103cb3
--- /dev/null
+++ b/server/core/ZipReader.js
@@ -0,0 +1,57 @@
+const StreamZip = require('node-stream-zip');
+
+class ZipReader {
+    constructor() {
+        this.zip = null;
+    }
+
+    checkState() {
+        if (!this.zip)
+            throw new Error('Zip closed');
+    }
+
+    async open(zipFile) {
+        if (this.zip)
+            throw new Error('Zip file already open');
+
+         const zip = new StreamZip.async({file: zipFile});
+         
+         this.zipEntries = await zip.entries();
+
+         this.zip = zip;
+    }
+
+    get entries() {
+        this.checkState();
+
+        return this.zipEntries;
+    }
+
+    async extractToBuf(entryFilePath) {
+        this.checkState();
+
+        return await this.zip.entryData(entryFilePath);
+    }
+
+    async extractToFile(entryFilePath, outputFile) {
+        this.checkState();
+
+        await this.zip.extract(entryFilePath, outputFile);
+    }
+
+    async extractAllToDir(outputDir) {
+        this.checkState();
+
+        await this.zip.extract(null, outputDir);
+    }
+
+    close() {
+        if (this.zip) {
+            this.zip.close();
+            this.zip = null;
+            this.zipEntries = null;
+        }
+    }
+}
+
+module.exports = ZipReader;
\ No newline at end of file