Problem:
- Spine items stored raw href from manifest (e.g., 'cover.xhtml')
- Resources stored with full paths (e.g., 'OEBPS/cover.xhtml')
- Content lookup failed: resourceMap.get('cover.xhtml') returned undefined
- Result: Pagination failed with 0 pages, content not found
Root Cause:
- parseSpine() didn't resolve paths relative to OPF file location
- Spine hrefs are relative to OPF directory, not ZIP root
- Manifest items use relative paths like 'cover.xhtml'
- Actual files are at 'OEBPS/cover.xhtml' (relative to OEBPS/content.opf)
Solution:
- Use resolvePath() helper to resolve href relative to opfPath
- Store resolved full path in spine items: 'OEBPS/cover.xhtml'
- Match resource Map storage pattern (full paths)
- Extract cover image and add to EbookCIF.metadata
Changes:
- parseSpine(): Add opfPath parameter, resolve each spine href
- parseEPUB(): Pass opfPath to parseSpine()
- extractCover(): Load cover image from EPUB manifest
- Return EbookCIF.metadata.coverImage with Blob data
Impact:
- ✅ Spine content files now found correctly
- ✅ Pagination calculates actual pages (119 pages vs 0)
- ✅ Ebook content loads and displays
- ✅ Cover image extracted and available
Testing:
- EPUB with spine items in subdirectory (OEBPS/)
- Content lookup now succeeds
- Pagination generates correct page count
Files changed: 1
Lines changed: +14, -3
john-okeefe
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