On kindle, kobo and pocketbook the data directory is the current
running directory but on Android the app is installed in system
defined location and users may have no access to that location.
The same circumstances should be true for the upcoming Koreader for
Ubuntu touch, so the data directory (in which tessdata, dictionaries,
global settings, persistant defaults and probably history data are
stored) could be stored in another place.
Guard against trying to get any kind of frontlight info on devices
without one.
So far the flIntensity prop has always been there, even on devices
without one, but better not assume that'll always be the case ;).
That, and be consistent with the other lipc_handle tests.
My batch of startup script tweaks should ensure PRODUCT is always
exported.
Leave the fallback in place, to avoid blowing up in weird corner-cases I
haven't thought about.
More closely matches native behavior on REAGL devices.
Closing those widgets should still trigger a partial refresh though,
because we usually get back to the reader, and text, so we want REAGL
;).
The VFAT file system of `/mnt/us` is case insensitive so that
require("json") from Spore which intends to load luajson module in
rock directory actually will load `frontend/JSON.lua`, the two JSON
parser libraries have slightly different APIs.
This patch remove the pure Lua JSON library in favor of `luajson` which
uses LPeg pattern marching backend for better performance.
We can input relative page number now in the reader goto dialog.
Goto "+4" will page forward 4 pages and goto "-4" will page
backward 4 pages.
This implements #1437.
The 'KOSync' plugin will synchronize furthest reading progress
across different koreader devices after users registering their
devices.
The synchronizing service is open-sourced as the project
[koreader/koreader-sync-server](https://github.com/koreader/koreader-sync-server).