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- A failed, cancelled or finished place-names download is reported once as a toast (failures as an error toast that says what to do), and metadata.placeNamesStatus reports downloading / lastDownload / lastError. - The parsed GeoNames data is cached in the session and re-read only when the cities file's size or modification time changes. - End-to-end download test against a fake HTTP server on 127.0.0.1: a synthetic zip, a garbage zip, a truncated body and 404s. - Info panel: Fill Location gets its own row (it was clipped beside Show on Map in a narrow panel). Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
lightcraft-geocode (L1)
Offline reverse geocoding: a GPS position becomes Sublocation / City / State / Country.
- Data: the GeoNames dump (https://download.geonames.org/export/dump/), licensed CC-BY 4.0
(attribution: "GeoNames, geonames.org"). Nothing is bundled: the engine
(
metadata.downloadPlaceNames) downloadscities15000.zip,admin1CodesASCII.txtandcountryInfo.txton the user's request into the settings folder. This crate only parses and searches; it never touches the network. - Lookup: the nearest populated place within
MAX_KM(great-circle distance), searched in the 1° cells around the position, so one lookup looks at a few dozen places, not all of them. - unzip: just enough ZIP to read one file out of
cities15000.zip(stored or deflated). - Never panics on hostile input: bad lines are skipped, NaN / out-of-range positions find nothing, sizes and counts are capped.
Sources: GeoNames dump readme (file layout, prose); haversine distance (textbook); PKWARE APPNOTE (ZIP, prose spec); the cell index is own design.