Initial: Mesh-Skills, Configs, Scripts

2026-09-02 23:49:07 +02:00
commit 26c7980750
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+#!/usr/bin/env python3
+"""build_gtfs_db.py — GTFS-Datei in SQLite laden (einmalig).
+Aufruf: python3 build_gtfs_db.py <gtfs_zip> <out_db> [gtfs_dir]
+Legt Tabellen stops/trips/st an (Schema siehe gtfs-timetable-routing/references).
+"""
+import zipfile, sqlite3, os, sys, time
+
+def main():
+    gtfs_zip = sys.argv[1]
+    out_db = sys.argv[2]
+    work = sys.argv[3] if len(sys.argv) > 3 else "/tmp/gtfs_x"
+    os.makedirs(work, exist_ok=True)
+    # extrahieren
+    with zipfile.ZipFile(gtfs_zip) as z:
+        z.extractall(work)
+    t0 = time.time()
+    con = sqlite3.connect(out_db)
+    con.execute("PRAGMA journal_mode=MEMORY"); con.execute("PRAGMA temp_store=MEMORY")
+    con.executescript("""
+    CREATE TABLE stops(stop_id TEXT PRIMARY KEY, stop_name TEXT, stop_lat REAL, stop_lon REAL);
+    CREATE TABLE trips(trip_id TEXT PRIMARY KEY, route_id TEXT, service_id TEXT);
+    CREATE TABLE st(stop_id TEXT, trip_id TEXT, seq INT, arr TEXT, dep TEXT);
+    CREATE INDEX idx_st_stop ON st(stop_id);
+    CREATE INDEX idx_st_trip ON st(trip_id);
+    CREATE INDEX idx_st_seq ON st(trip_id, seq);
+    """)
+    # stops.txt: stop_name,parent_station,stop_id,stop_lat,stop_lon,...
+    n=0
+    with open(f"{work}/stops.txt", encoding="utf-8") as f:
+        f.readline()
+        for line in f:
+            p = line.strip().split(",")
+            if len(p) >= 5 and p[3] and p[4]:
+                sid = p[2] if p[2] else p[1]  # bevorzugt stop_id, fallback parent_station
+                con.execute("INSERT OR IGNORE INTO stops VALUES(?,?,?,?)", (sid, p[0], p[3], p[4]))
+                n += 1
+    print("stops:", n)
+    # trips.txt: route_id,service_id,trip_id
+    n=0
+    with open(f"{work}/trips.txt", encoding="utf-8") as f:
+        f.readline()
+        for line in f:
+            p = line.strip().split(",")
+            if len(p) >= 3 and p[0]:
+                con.execute("INSERT OR IGNORE INTO trips VALUES(?,?,?)", (p[2], p[0], p[1]))
+                n += 1
+    print("trips:", n)
+    # stop_times.txt: trip_id,arrival_time,departure_time,stop_id,stop_sequence,...
+    n=0; batch=[]
+    with open(f"{work}/stop_times.txt", encoding="utf-8") as f:
+        f.readline()
+        for line in f:
+            p = line.strip().split(",")
+            if len(p) >= 5 and p[0] and p[3]:
+                batch.append((p[3], p[0], int(p[4]) if p[4].isdigit() else 0, p[1], p[2]))
+                if len(batch) >= 50000:
+                    con.executemany("INSERT INTO st VALUES(?,?,?,?,?)", batch); n += len(batch); batch = []
+        if batch:
+            con.executemany("INSERT INTO st VALUES(?,?,?,?,?)", batch); n += len(batch)
+    con.commit(); con.close()
+    print("stop_times:", n, "| DB gebaut in %.1fs" % (time.time()-t0))
+
+if __name__ == "__main__":
+    main()