From 2948cfdc27d9f1fd5afa8a0179aec29d985b4be3 Mon Sep 17 00:00:00 2001
From: Book Pauk <bookpauk@gmail.com>
Date: Tue, 16 Aug 2022 18:34:16 +0700
Subject: [PATCH] =?UTF-8?q?=D0=9D=D0=B0=D1=87=D0=B0=D0=BB=D0=BE=20=D1=80?=
 =?UTF-8?q?=D0=B0=D0=B1=D0=BE=D1=82=D1=8B=20=D0=BD=D0=B0=D0=B4=20InpxParse?=
 =?UTF-8?q?r?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 server/core/InpxParser.js | 83 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 server/core/InpxParser.js

diff --git a/server/core/InpxParser.js b/server/core/InpxParser.js
new file mode 100644
index 0000000..88c2f71
--- /dev/null
+++ b/server/core/InpxParser.js
@@ -0,0 +1,83 @@
+const path = require(path);
+const ZipReader = require('./ZipReader');
+
+const collectionInfo = 'collection.info';
+const structureInfo = 'structure.info';
+const versionInfo = 'version.info';
+
+const defaultStructure = 'AUTHOR;GENRE;TITLE;SERIES;SERNO;FILE;SIZE;LIBID;DEL;EXT;DATE;LANG;LIBRATE;KEYWORDS';
+
+class InpxParser {
+    constructor() {
+        this.info = {};
+    }
+
+    async safeExtractToString(zipReader, fileName) {
+        let result = '';
+
+        try {
+            result = await zipReader.extractToBuf(fileName).toString();
+        } catch (e) {
+            //quiet
+        }
+        return result.trim();
+    }
+
+    async parse(inpxFile, readFileCallback, parsedCallback) {
+        if (!readFileCallback)
+            readFileCallback = async() => {};
+
+        if (!parsedCallback)
+            parsedCallback = async() => {};
+
+
+        const zipReader = new ZipReader();
+        await zipReader.open(inpxFile);
+
+        try {
+            const info = this.info;
+
+            //info
+            await readFileCallback(collectionInfo);
+            info.collection = await this.safeExtractToString(zipReader, collectionInfo);
+            
+            await readFileCallback(structureInfo);
+            info.structure = await this.safeExtractToString(zipReader, structureInfo);
+            
+            await readFileCallback(versionInfo);
+            info.version = await this.safeExtractToString(zipReader, versionInfo);
+
+            //structure
+            let inpxStructure = info.structure;
+            if (!inpxStructure)
+                inpxStructure = defaultStructure;
+            inpxStructure = inpxStructure.toLowerCase();
+            const structure = inpxStructure.split(';');
+
+            //inp-файлы
+            let chunk = [];
+            const entries = Object.values(zipReader.entries);
+            for (const entry of entries) {
+                if (!entry.isDirectory && path.extname(entry.name) == '.inp') {
+
+                    await readFileCallback(entry.name);
+                    const buf = await zipReader.extractToBuf(entry.name);
+                    chunk.push(this.parseInp(buf, structure));
+                }
+            }
+        } finally {
+            zipReader.close();
+        }
+    }
+
+    parseInp(inpBuf, structure) {
+        const rows = inpBuf.toString().split('\n');
+        console.log(rows);
+    }
+
+    get info() {
+        return this.info;
+    }
+}
+
+module.exports = InpxParser;
\ No newline at end of file