mirror of
https://git.pumpin.online/funkpower/catena.git
synced 2026-11-14 08:05:40 +00:00
funkpower
b7d98e9d1a
A Kindle book's title, authors, publisher, description, ISBN, ASIN, subjects, date and language come from the EXTH block, with the full name, the Palm database name and the header's locale as fallbacks. The cover image (EXTH 201, or the thumbnail) is returned as Metadata::cover with its media type; it stays out of the JSON record. Every offset is bounds-checked: a damaged header gives an empty record with a note, a broken EXTH block keeps what came before the break, and an encrypted book is still read and noted as drm. Metadata gains description, which the EPUB reader now fills from dc:description as well. Fixtures are a story and cover written for the tests (CC0), converted with calibre to MOBI 6 and AZW3, plus no-EXTH, DRM-flagged and truncated copies.
29 lines
1.1 KiB
Markdown
29 lines
1.1 KiB
Markdown
# Fixtures
|
||
|
||
## MOBI and AZW3
|
||
|
||
`lantern.html` is a two-paragraph story written for these tests, and
|
||
`lantern-cover.jpg` a 120×180 cover drawn for them with Pillow. Both are
|
||
dedicated to the public domain (CC0 1.0), and so is everything made from them.
|
||
|
||
`lantern.mobi` (MOBI 6) and `lantern.azw3` (KF8) were made from them with
|
||
calibre 9.14:
|
||
|
||
```sh
|
||
common=(--title "A Lantern in the Orchard" --authors "Ada Quill & Tomás Reed"
|
||
--publisher "Orchard Press" --isbn 9780306406157 --tags "Fiction,Villages"
|
||
--language en --pubdate 2001-04-05 --comments "A short story written for testing."
|
||
--cover lantern-cover.jpg)
|
||
ebook-convert lantern.html lantern.mobi --mobi-file-type old "${common[@]}"
|
||
ebook-convert lantern.html lantern.azw3 "${common[@]}"
|
||
```
|
||
|
||
The other three are `lantern.mobi` with one thing broken. `r0` is the first
|
||
record's offset, the big-endian 32-bit number at byte 78 (136 here).
|
||
|
||
| File | Change |
|
||
|---|---|
|
||
| `lantern-no-exth.mobi` | The EXTH flag (`0x40`) cleared in the MOBI header's flags, at `r0 + 16 + 112` |
|
||
| `lantern-drm.mobi` | The PalmDOC encryption type, at `r0 + 12`, set to 2 |
|
||
| `lantern-truncated.mobi` | The first 1024 bytes only |
|