this repo has no description
harmonize code generators, fix warning
+67
-57
+3
-3
generate_airport_tz_list.py
+3
-3
generate_airport_tz_list.py
···
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3) Fallback for missing offsets (min 1, max max_bucket) using classification + traffic.
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4) Distribute codes evenly across DST buckets, cap each to max_bucket.
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"""
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year = datetime.utcnow().year
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year = datetime.now(timezone.utc).year
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airport_db = airportsdata.load("IATA")
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# Ensure unique HTML airport entries by IATA code
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seen_iatas: set[str] = set()
···
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parser.add_argument(
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"--max-bucket",
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type=int,
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-
default=3,
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help="Maximum number of airport codes to include per DST bucket (default: 3)",
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+
default=10,
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help="Maximum number of airport codes to include per DST bucket (default: 10)",
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)
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args = parser.parse_args(argv)
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+12
-3
generate_tz_list.py
+12
-3
generate_tz_list.py
···
1
1
# Requires Python 3.9+ for zoneinfo
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import zoneinfo
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from datetime import datetime, timedelta, timezone
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from functools import lru_cache
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# No unused imports found (time is used for .timestamp())
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# Helper to get offset and DST component safely
···
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return None
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# Function to find DST transitions within a year
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@lru_cache(maxsize=None)
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def find_dst_transitions_accurate(tz_name: str, year: int) -> tuple[int, int, int, int]:
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""" Finds precise DST transition UTC timestamps for a given year.
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Returns (std_offset_sec, dst_offset_sec, last_start_utc_ts, last_end_utc_ts)
···
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if city_name not in processed_zones[key_tuple]["names"]:
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processed_zones[key_tuple]["names"].append(city_name)
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-
# Convert dict values to a list and sort primarily by standard offset, then DST offset
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# Sort key uses the seconds offset stored in the dictionary value
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tz_data_list = sorted(processed_zones.values(), key=lambda x: (x["std_offset_s"], x["dst_offset_s"]))
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# Convert dict values to a list and sort by std offset, then DST offset, then by DST start/end to keep consistent ordering
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tz_data_list = sorted(
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processed_zones.values(),
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key=lambda x: (
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x["std_offset_s"],
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x["dst_offset_s"],
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x["start_utc"],
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x["end_utc"]
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)
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)
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print(f"Generated data for {len(tz_data_list)} unique offset/DST rule combinations.")
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# --- C Code Generation: Flatten name pool and tz_list entries ---
+3
-3
run.sh
+3
-3
run.sh
···
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# Function to run the timezone generation script
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generate_tz_list() {
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echo "Generating timezone list..."
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# python generate_tz_list.py
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uv run python generate_airport_tz_list.py --top 10 --max-bucket 10 --out src/c/airport_tz_list.c
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echo "Generating timezone lists..."
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uv run python generate_tz_list.py
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uv run python generate_airport_tz_list.py
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}
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# Function to build the project
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src/c/tz_list.c
+49
-48
src/c/tz_list.c
···
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"Cayenne",
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"ComodRivadavia",
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"Cordoba",
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+
"Coyhaique",
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"Fortaleza",
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"Jujuy",
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"La Rioja",
···
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"Sao Tome",
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"St Helena",
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"Timbuktu",
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-
"Casablanca",
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-
"El Aaiun",
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"Belfast",
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"Dublin",
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"Lisbon",
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"London",
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"Casablanca",
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"El Aaiun",
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"Troll",
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"Algiers",
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"Bangui",
···
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"Windhoek",
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"Jerusalem",
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"Tel Aviv",
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"Beirut",
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"Chisinau",
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"Tiraspol",
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"Athens",
···
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"Uzhgorod",
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"Vilnius",
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"Zaporozhye",
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-
"Cairo",
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"Gaza",
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"Hebron",
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-
"Beirut",
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"Cairo",
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"Addis Ababa",
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"Aden",
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"Amman",
···
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{ -4.00f, -3.00f, 1741489200LL, 1762048800LL, 134, 6 },
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{ -4.00f, -3.00f, 1757206800LL, 1743897600LL, 140, 1 },
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{ -3.50f, -2.50f, 1741489200LL, 1762048800LL, 141, 1 },
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-
{ -3.00f, -3.00f, 0LL, 0LL, 142, 29 },
499
-
{ -3.00f, -2.00f, 1741489200LL, 1762048800LL, 171, 1 },
500
-
{ -2.00f, -2.00f, 0LL, 0LL, 172, 1 },
501
-
{ -2.00f, -1.00f, 1743292800LL, 1761436800LL, 173, 3 },
502
-
{ -1.00f, -1.00f, 0LL, 0LL, 176, 1 },
503
-
{ -1.00f, 0.00f, 1743296400LL, 1761440400LL, 177, 1 },
504
-
{ 0.00f, 0.00f, 0LL, 0LL, 178, 17 },
505
-
{ 0.00f, 1.00f, 1743908400LL, 1740279600LL, 195, 2 },
506
-
{ 0.00f, 1.00f, 1743300000LL, 1761444000LL, 197, 4 },
507
-
{ 0.00f, 2.00f, 1743303600LL, 1761447600LL, 201, 1 },
508
-
{ 1.00f, 1.00f, 0LL, 0LL, 202, 13 },
509
-
{ 1.00f, 2.00f, 1743303600LL, 1761447600LL, 215, 33 },
510
-
{ 2.00f, 2.00f, 0LL, 0LL, 248, 16 },
511
-
{ 2.00f, 3.00f, 1743130800LL, 1761444000LL, 264, 2 },
512
-
{ 2.00f, 3.00f, 1743303600LL, 1761447600LL, 266, 2 },
513
-
{ 2.00f, 3.00f, 1743307200LL, 1761451200LL, 268, 14 },
514
-
{ 2.00f, 3.00f, 1745542800LL, 1761868800LL, 282, 1 },
515
-
{ 2.00f, 3.00f, 1744426800LL, 1761357600LL, 283, 2 },
516
-
{ 2.00f, 3.00f, 1743296400LL, 1761436800LL, 285, 1 },
517
-
{ 3.00f, 3.00f, 0LL, 0LL, 286, 26 },
518
-
{ 3.50f, 3.50f, 0LL, 0LL, 312, 1 },
519
-
{ 4.00f, 4.00f, 0LL, 0LL, 313, 12 },
520
-
{ 4.50f, 4.50f, 0LL, 0LL, 325, 1 },
521
-
{ 5.00f, 5.00f, 0LL, 0LL, 326, 18 },
522
-
{ 5.50f, 5.50f, 0LL, 0LL, 344, 3 },
523
-
{ 5.75f, 5.75f, 0LL, 0LL, 347, 2 },
524
-
{ 6.00f, 6.00f, 0LL, 0LL, 349, 9 },
525
-
{ 6.50f, 6.50f, 0LL, 0LL, 358, 3 },
526
-
{ 7.00f, 7.00f, 0LL, 0LL, 361, 15 },
527
-
{ 8.00f, 8.00f, 0LL, 0LL, 376, 21 },
528
-
{ 8.75f, 8.75f, 0LL, 0LL, 397, 1 },
529
-
{ 9.00f, 9.00f, 0LL, 0LL, 398, 9 },
530
-
{ 9.50f, 9.50f, 0LL, 0LL, 407, 1 },
531
-
{ 9.50f, 10.50f, 1759633200LL, 1743908400LL, 408, 3 },
532
-
{ 10.00f, 10.00f, 0LL, 0LL, 411, 10 },
533
-
{ 10.00f, 11.00f, 1759633200LL, 1743908400LL, 421, 6 },
534
-
{ 10.50f, 11.00f, 1759633200LL, 1743904800LL, 427, 2 },
535
-
{ 11.00f, 11.00f, 0LL, 0LL, 429, 10 },
536
-
{ 11.00f, 12.00f, 1759633200LL, 1743908400LL, 439, 1 },
537
-
{ 12.00f, 12.00f, 0LL, 0LL, 440, 10 },
538
-
{ 12.00f, 13.00f, 1759028400LL, 1743908400LL, 450, 2 },
539
-
{ 12.75f, 13.75f, 1759032000LL, 1743912000LL, 452, 1 },
540
-
{ 13.00f, 13.00f, 0LL, 0LL, 453, 4 },
541
-
{ 14.00f, 14.00f, 0LL, 0LL, 457, 1 },
499
+
{ -3.00f, -3.00f, 0LL, 0LL, 142, 30 },
500
+
{ -3.00f, -2.00f, 1741489200LL, 1762048800LL, 172, 1 },
501
+
{ -2.00f, -2.00f, 0LL, 0LL, 173, 1 },
502
+
{ -2.00f, -1.00f, 1743292800LL, 1761436800LL, 174, 3 },
503
+
{ -1.00f, -1.00f, 0LL, 0LL, 177, 1 },
504
+
{ -1.00f, 0.00f, 1743296400LL, 1761440400LL, 178, 1 },
505
+
{ 0.00f, 0.00f, 0LL, 0LL, 179, 17 },
506
+
{ 0.00f, 1.00f, 1743300000LL, 1761444000LL, 196, 4 },
507
+
{ 0.00f, 1.00f, 1743908400LL, 1740279600LL, 200, 2 },
508
+
{ 0.00f, 2.00f, 1743303600LL, 1761447600LL, 202, 1 },
509
+
{ 1.00f, 1.00f, 0LL, 0LL, 203, 13 },
510
+
{ 1.00f, 2.00f, 1743303600LL, 1761447600LL, 216, 33 },
511
+
{ 2.00f, 2.00f, 0LL, 0LL, 249, 16 },
512
+
{ 2.00f, 3.00f, 1743130800LL, 1761444000LL, 265, 2 },
513
+
{ 2.00f, 3.00f, 1743296400LL, 1761436800LL, 267, 1 },
514
+
{ 2.00f, 3.00f, 1743303600LL, 1761447600LL, 268, 2 },
515
+
{ 2.00f, 3.00f, 1743307200LL, 1761451200LL, 270, 14 },
516
+
{ 2.00f, 3.00f, 1744426800LL, 1761357600LL, 284, 2 },
517
+
{ 2.00f, 3.00f, 1745542800LL, 1761868800LL, 286, 1 },
518
+
{ 3.00f, 3.00f, 0LL, 0LL, 287, 26 },
519
+
{ 3.50f, 3.50f, 0LL, 0LL, 313, 1 },
520
+
{ 4.00f, 4.00f, 0LL, 0LL, 314, 12 },
521
+
{ 4.50f, 4.50f, 0LL, 0LL, 326, 1 },
522
+
{ 5.00f, 5.00f, 0LL, 0LL, 327, 18 },
523
+
{ 5.50f, 5.50f, 0LL, 0LL, 345, 3 },
524
+
{ 5.75f, 5.75f, 0LL, 0LL, 348, 2 },
525
+
{ 6.00f, 6.00f, 0LL, 0LL, 350, 9 },
526
+
{ 6.50f, 6.50f, 0LL, 0LL, 359, 3 },
527
+
{ 7.00f, 7.00f, 0LL, 0LL, 362, 15 },
528
+
{ 8.00f, 8.00f, 0LL, 0LL, 377, 21 },
529
+
{ 8.75f, 8.75f, 0LL, 0LL, 398, 1 },
530
+
{ 9.00f, 9.00f, 0LL, 0LL, 399, 9 },
531
+
{ 9.50f, 9.50f, 0LL, 0LL, 408, 1 },
532
+
{ 9.50f, 10.50f, 1759633200LL, 1743908400LL, 409, 3 },
533
+
{ 10.00f, 10.00f, 0LL, 0LL, 412, 10 },
534
+
{ 10.00f, 11.00f, 1759633200LL, 1743908400LL, 422, 6 },
535
+
{ 10.50f, 11.00f, 1759633200LL, 1743904800LL, 428, 2 },
536
+
{ 11.00f, 11.00f, 0LL, 0LL, 430, 10 },
537
+
{ 11.00f, 12.00f, 1759633200LL, 1743908400LL, 440, 1 },
538
+
{ 12.00f, 12.00f, 0LL, 0LL, 441, 10 },
539
+
{ 12.00f, 13.00f, 1759028400LL, 1743908400LL, 451, 2 },
540
+
{ 12.75f, 13.75f, 1759032000LL, 1743912000LL, 453, 1 },
541
+
{ 13.00f, 13.00f, 0LL, 0LL, 454, 4 },
542
+
{ 14.00f, 14.00f, 0LL, 0LL, 458, 1 },
542
543
};
543
544
544
545
#define TZ_LIST_COUNT (sizeof(tz_list)/sizeof(tz_list[0]))