Asked for on Discord (prepper use: books and documentation offline on the card).
- The Reader opens a .txt or .md file on the card as a 16 KB window at an
offset carried in the URL (sd:/x.txt?o=49152), cut back to a line (or a whole
UTF-8 character), with Next page / Previous page / Back to the start links and
the position in percent. A book of any size pages through; Back works as usual.
- Files opens HTML on the card in the Reader (its links work there, so a folder of
pages browses offline) and text or markdown too big for the 8 KB editor; small
text files keep the editor.
- scripts/sdpack.py (standard library only): an EPUB becomes /library/<name>/ with
one page per chapter (long chapters split under 30 KB, linked in order) and a
contents page; .txt/.md are copied as they are; /home.htm lists everything, so
the Reader, which opens sd:/home.htm, starts on the library. Tested with a
generated EPUB.
ZIM (Wikipedia) files are not read on the device: their clusters are zstd/xz
blobs of 1-2 MB and the files run to tens of GB on FAT32; converting on a
computer keeps the device side small.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
