NekoCardReader/map_pipeline.py at main · zheznanohana/NekoCardReader · GitHub

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"""地图前处理流水线。只消费解析后的 Transaction，可安全放入 Qt 后台线程。"""
from __future__ import annotations

import cn_network
import station_data


def resolve_transactions(transactions, station_db, cancelled=None):
    cancelled = cancelled or (lambda: False)
    rows = list(transactions)
    jp = [t for t in rows if t.country == "日本" and t.in_station and t.out_station
          and t.in_station != t.out_station]

    # 同一批历史会反复出现相同站名/区间；单次任务内缓存解析结果。
    plain = {}
    if station_db:
        for t in jp:
            if cancelled():
                return []
            for name in (t.in_station, t.out_station):
                if name not in plain:
                    plain[name] = station_db.resolve(name)
    pre = [(plain.get(t.in_station), plain.get(t.out_station)) for t in jp]
    pre = [(a, b) for a, b in pre if a and b]
    anchor = None
    if pre:
        anchor = (sum(a[0] + b[0] for a, b in pre) / (2 * len(pre)),
                  sum(a[1] + b[1] for a, b in pre) / (2 * len(pre)))

    anchored = {}
    cn_routes = {}
    trips = []
    for t in rows:
        if cancelled():
            return []
        if not (t.in_station and t.out_station and t.in_station != t.out_station):
            continue
        if t.country == "中国":
            if t.in_lat is None or t.out_lat is None:
                continue
            route_key = (t.city, t.in_station, t.out_station)
            if route_key not in cn_routes:
                try:
                    cn_routes[route_key] = cn_network.get_router(t.city).route(
                        t.in_station, t.out_station)
                except Exception:
                    cn_routes[route_key] = None
            route = cn_routes[route_key]
            if not route or len(route) < 2 or any("�" in (name or "") for name, _la, _lo in route):
                continue
            path = [{"name": name, "lat": lat, "lon": lon} for name, lat, lon in route]
            trip = {"country": "中国", "in": route[0][0], "out": route[-1][0],
                    "ci": (route[0][1], route[0][2]), "co": (route[-1][1], route[-1][2]),
                    "path": path, "line": t.line, "city_code": t.city,
                    "lines_in": [], "lines_out": [],
                    "_place_key": "CN:" + (t.city or "0000")}
        else:
            if not station_db:
                continue
            for name in (t.in_station, t.out_station):
                if name not in anchored:
                    anchored[name] = station_db.resolve(name, anchor)
            a, b = anchored.get(t.in_station), anchored.get(t.out_station)
            if not (a and b):
                continue
            trip = {"country": "日本", "in": t.in_station, "out": t.out_station,
                    "ci": (a[0], a[1]), "co": (b[0], b[1]), "path": None, "line": t.line,
                    "lines_in": station_db.lines_of(a), "lines_out": station_db.lines_of(b),
                    "_place_key": "JP:" + station_data.region_of_pref(a[2])}
        trips.append(trip)
    return trips