From 5e4f78f7bef3c796108e530ea2e9afd60aba0e2f Mon Sep 17 00:00:00 2001
From: jpirnay <jens@pirnay.com>
Date: Mon, 20 Apr 2026 12:28:00 +0200
Subject: [PATCH] Finetuning

---
 lib/Epub/Epub.cpp         |  9 +++++----
 lib/Epub/Epub.h           |  2 +-
 lib/Epub/Epub/Section.cpp | 10 ++++++----
 3 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/lib/Epub/Epub.cpp b/lib/Epub/Epub.cpp
index baf1b2e7..4ee69bae 100644
--- a/lib/Epub/Epub.cpp
+++ b/lib/Epub/Epub.cpp
@@ -45,7 +45,7 @@ bool Epub::findContentOpfFile(std::string* contentOpfFile) const {
   return true;
 }
 
-bool Epub::parseContentOpf(BookMetadataCache::BookMetadata& bookMetadata) {
+bool Epub::parseContentOpf(BookMetadataCache::BookMetadata& bookMetadata, bool useCache) {
   std::string contentOpfFilePath;
   if (!findContentOpfFile(&contentOpfFilePath)) {
     LOG_ERR("EBP", "Could not find content.opf in zip");
@@ -62,7 +62,8 @@ bool Epub::parseContentOpf(BookMetadataCache::BookMetadata& bookMetadata) {
     return false;
   }
 
-  ContentOpfParser opfParser(getCachePath(), getBasePath(), contentOpfSize, bookMetadataCache.get());
+  ContentOpfParser opfParser(getCachePath(), getBasePath(), contentOpfSize,
+                             useCache ? bookMetadataCache.get() : nullptr);
   if (!opfParser.setup()) {
     LOG_ERR("EBP", "Could not setup content.opf parser");
     return false;
@@ -352,7 +353,7 @@ bool Epub::load(const bool buildIfMissing, const bool skipLoadingCss) {
         LOG_DBG("EBP", "CSS rules cache missing or stale, attempting to parse CSS files");
         cssParser->deleteCache();
 
-        if (!parseContentOpf(bookMetadataCache->coreMetadata)) {
+        if (!parseContentOpf(bookMetadataCache->coreMetadata, false)) {
           LOG_ERR("EBP", "Could not parse content.opf from cached bookMetadata for CSS files");
           // continue anyway - book will work without CSS and we'll still load any inline style CSS
         }
@@ -389,7 +390,7 @@ bool Epub::load(const bool buildIfMissing, const bool skipLoadingCss) {
     LOG_ERR("EBP", "Could not begin writing content.opf pass");
     return false;
   }
-  if (!parseContentOpf(bookMetadata)) {
+  if (!parseContentOpf(bookMetadata, true)) {
     LOG_ERR("EBP", "Could not parse content.opf");
     return false;
   }
diff --git a/lib/Epub/Epub.h b/lib/Epub/Epub.h
index 77d52a04..201188f3 100644
--- a/lib/Epub/Epub.h
+++ b/lib/Epub/Epub.h
@@ -35,7 +35,7 @@ class Epub {
   bool syntheticTocFallbackEnabled = false;
 
   bool findContentOpfFile(std::string* contentOpfFile) const;
-  bool parseContentOpf(BookMetadataCache::BookMetadata& bookMetadata);
+  bool parseContentOpf(BookMetadataCache::BookMetadata& bookMetadata, bool useCache = true);
   bool parseTocNcxFile() const;
   bool parseTocNavFile() const;
   void parseCssFiles() const;
diff --git a/lib/Epub/Epub/Section.cpp b/lib/Epub/Epub/Section.cpp
index 788498db..06ff3420 100644
--- a/lib/Epub/Epub/Section.cpp
+++ b/lib/Epub/Epub/Section.cpp
@@ -584,17 +584,19 @@ std::optional<uint16_t> Section::getPageForParagraphIndex(const uint16_t pIndex)
     return std::nullopt;
   }
 
-  // Find the first page whose paragraph index >= pIndex.
-  uint16_t resultPage = count - 1;  // default to last page
+  // Find the page that contains the requested paragraph index.
+  // Each entry stores the first paragraph index for that page, so the page
+  // containing pIndex is the last page whose start paragraph is <= pIndex.
+  uint16_t resultPage = 0;
   for (uint16_t i = 0; i < count; i++) {
     uint32_t byteOffset;
     uint16_t pagePIdx;
     serialization::readPod(f, byteOffset);
     serialization::readPod(f, pagePIdx);
-    if (pagePIdx >= pIndex) {
-      resultPage = i;
+    if (pagePIdx > pIndex) {
       break;
     }
+    resultPage = i;
   }
 
   f.close();