From bc22699baba4fd8f3799a66fee35a51052ae81ea Mon Sep 17 00:00:00 2001
From: John Factotum <50942278+johnfactotum@users.noreply.github.com>
Date: Fri, 4 Nov 2022 10:43:30 +0000
Subject: [PATCH] EPUB: add a method for getting Calibre bookmarks

See https://github.com/johnfactotum/foliate/issues/849
---
 epub.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/epub.js b/epub.js
index 4247cb9..1c7fed5 100644
--- a/epub.js
+++ b/epub.js
@@ -736,4 +736,12 @@ export class EPUB {
     isExternal(uri) {
         return isExternal(uri)
     }
+    async getCalibreBookmarks() {
+        const txt = await this.loadText('META-INF/calibre_bookmarks.txt')
+        const magic = 'encoding=json+base64:'
+        if (txt?.startsWith(magic)) {
+            const json = atob(txt.slice(magic.length))
+            return JSON.parse(json)
+        }
+    }
 }