From 9b366ad1c4a7de269f1ce58d3ed7b216b2cc4492 Mon Sep 17 00:00:00 2001
From: John Factotum <50942278+johnfactotum@users.noreply.github.com>
Date: Thu, 3 Aug 2023 18:38:11 +0800
Subject: [PATCH] EPUB: throw on XML errors

---
 epub.js | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/epub.js b/epub.js
index 9cd442f..399f7b2 100644
--- a/epub.js
+++ b/epub.js
@@ -639,11 +639,14 @@ export class EPUB {
         this.getSize = getSize
         this.#encryption = new Encryption(deobfuscators(sha1))
     }
-    #parseXML(str) {
-        return str ? this.parser.parseFromString(str, MIME.XML) : null
-    }
     async #loadXML(uri) {
-        return this.#parseXML(await this.loadText(uri))
+        const str = await this.loadText(uri)
+        if (!str) return null
+        const doc = this.parser.parseFromString(str, MIME.XML)
+        if (doc.querySelector('parsererror'))
+            throw new Error(`XML parsing error: ${uri}
+${doc.querySelector('parsererror').innerText}`)
+        return doc
     }
     async init() {
         const $container = await this.#loadXML('META-INF/container.xml')