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feat: Lazy incremental EPUB section indexing (#2452)

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Co-authored-by: Uri Tauber <uritaube@gmail.com>
Co-authored-by: Julia Nguyen <julia@uxj.io>
This commit is contained in:
Justin Mitchell
2026-07-04 21:21:24 +03:00
committed by GitHub
co-authored by Uri Tauber Julia Nguyen
parent 79b4d63ee2
commit 685d4e88f9
14 changed files with 1055 additions and 262 deletions
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lib/KOReaderSync/ProgressMapper.cpp
+5 -4
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@@ -709,12 +709,13 @@ SavedProgressPosition ProgressMapper::toSavedProgress(const std::shared_ptr<Epub
float intra =
(pos.totalPages > 1) ? static_cast<float>(pos.pageNumber) / static_cast<float>(pos.totalPages - 1) : 0.0f;
result.percentage = epub->calculateProgress(pos.spineIndex, intra);
// Progress-based XPath correctly handles both <p> and <li> positions.
result.xpath = ChapterXPathResolver::findXPathForProgress(epub, pos.spineIndex, intra);
// Fall back to paragraph-index lookup when progress-based resolution fails.
if (result.xpath.empty() && pos.hasParagraphIndex && pos.paragraphIndex > 0) {
if (pos.hasParagraphIndex && pos.paragraphIndex > 0) {
result.xpath = ChapterXPathResolver::findXPathForParagraph(epub, pos.spineIndex, pos.paragraphIndex);
}
// Fall back to progress-based XPath, then synthetic progress mapping.
if (result.xpath.empty()) {
result.xpath = ChapterXPathResolver::findXPathForProgress(epub, pos.spineIndex, intra);
}
if (result.xpath.empty()) {
result.xpath = generateXPath(epub, pos.spineIndex, intra);
}