mirror of
https://github.com/xoseperez/espurna.git
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95 lines
1.9 KiB
Python
Executable File
95 lines
1.9 KiB
Python
Executable File
import argparse
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import mmap
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import os
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import pytz
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import re
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import sys
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def maybe_fix_value(value):
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return re.sub(r"<[^>]*>", "UNK", value)
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def maybe_skip_zone(zone):
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return zone.startswith("Etc/") or zone in ("GB-Eire", "W-SU")
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def utc_alias(zone):
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return zone in (
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"Universal",
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"UTC",
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"UCT",
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"Zulu",
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"GMT",
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"GMT+0",
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"GMT-0",
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"GMT0",
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"Greenwich",
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)
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def zones(root):
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out = []
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for zone in pytz.all_timezones_set:
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with open(os.path.join(root, zone), "rb") as f:
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magic = f.read(4)
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if magic != b"TZif":
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continue
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m = mmap.mmap(f.fileno(), 0, prot=mmap.PROT_READ)
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newline = m.rfind(b"\n", 0, len(m) - 1)
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if newline < 0:
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continue
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m.seek(newline + 1)
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tz = m.readline().strip()
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out.append([zone, tz.decode("ascii")])
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out.sort(key=lambda x: x[0])
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return out
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def table(zones):
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utcs = []
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rows = []
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for name, value in zones:
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if utc_alias(name):
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utcs.append(name)
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continue
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if maybe_skip_zone(name):
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continue
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rows.append(f"|{name}|{maybe_fix_value(value)}|")
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print("|Name|Value|")
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print("|---|---|")
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for name in utcs:
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print(f"|{name}|UTC0|")
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last = ""
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for row in rows:
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prefix, _, _ = row.partition("/")
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if last != prefix:
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last = prefix
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print("|||")
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print(row)
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print()
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print("---")
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print()
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print(f"Generated with *{pytz.OLSON_VERSION=} {pytz.VERSION=}*")
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument(
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"--root",
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help="Where do we get raw zoneinfo files from",
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default=os.path.join(os.path.dirname(pytz.__file__), "zoneinfo"),
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)
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args = parser.parse_args()
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table(zones(args.root))
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