brawer / osmdiffs / 43029240984

94%

Build Type

push

github

Committed by web-flow

Commit Message

feat(osm): Store each feature's country in the OSM index (#934)

OsmFeatureIndex now keeps the country of each feature's centroid, one
byte per feature: 0 for none, else 1 + the country's position in a
table of two-letter codes stored in the same file. Storing the table
keeps an index readable after the boundary data changes. The lookup
runs while the index is written, at about 0.16 µs per feature, or
about 30 seconds for the planet's 163 million features.

The feature storage format becomes "featstg1". An index in the older
format counts as missing, so it is built again, and an OSM planet
whose index is outdated gets downloaded again if it was deleted.

Two steps use the stored country instead of decoding geometry:
collect_wikidata_ids for its per-country brand totals, and the
deletion candidates, which now decode the geometry of a branded OSM
feature only if it turns out to be a candidate.

country-boundaries 1.2.0 knows exactly 255 two-letter codes, which
just fits; a test fails if a newer version has more.


Claude-Session: https://claude.ai/code/session_01Ttfb2LhDRExioXkdHbxLno

Co-authored-by: Claude <noreply@anthropic.com>

Coverage Stats

161 of 165 new or added lines in 7 files covered. (97.58%)

3 existing lines in 1 file now uncovered.

17848 of 18997 relevant lines covered (93.95%)

3520.2 hits per line