refactor: excel parse

2026-04-16 10:01:11 +08:00
parent 680ecc320f
commit f62f95ec02
7941 changed files with 2899112 additions and 0 deletions
@@ -0,0 +1,71 @@
+# Copyright (c) 2011-2022, Manfred Moitzi
+# License: MIT License
+from __future__ import annotations
+from math import floor
+from datetime import datetime
+
+
+def frac(number: float) -> float:
+    return number - floor(number)
+
+
+class JulianDate:
+    def __init__(self, date: datetime):
+        self.date = date
+        self.result: float = self.julian_date() + self.fractional_day()
+
+    def fractional_day(self) -> float:
+        seconds = (
+            self.date.hour * 3600.0 + self.date.minute * 60.0 + self.date.second
+        )
+        return seconds / 86400.0
+
+    def julian_date(self) -> float:
+        y = self.date.year + (float(self.date.month) - 2.85) / 12.0
+        A = floor(367.0 * y) - 1.75 * floor(y) + self.date.day
+        B = floor(A) - 0.75 * floor(y / 100.0)
+        return floor(B) + 1721115.0
+
+
+class CalendarDate:
+    def __init__(self, juliandate: float):
+        self.jdate = juliandate
+        year, month, day = self.get_date()
+        hour, minute, second = frac2time(self.jdate)
+        self.result = datetime(year, month, day, hour, minute, second)
+
+    def get_date(self) -> tuple[int, int, int]:
+        Z = floor(self.jdate)
+
+        if Z < 2299161:
+            A = Z  # julian calendar
+        else:
+            g = floor((Z - 1867216.25) / 36524.25)  # gregorian calendar
+            A = Z + 1 + g - floor(g / 4.0)
+
+        B = A + 1524.
+        C = floor((B - 122.1) / 365.25)
+        D = floor(365.25 * C)
+        E = floor((B - D) / 30.6001)
+
+        day = B - D - floor(30.6001 * E)
+        month = E - 1 if E < 14 else E - 13
+        year = C - 4716 if month > 2 else C - 4715
+        return int(year), int(month), int(day)
+
+
+def frac2time(jdate) -> tuple[int, int, int]:
+    seconds = int(frac(jdate) * 86400.0)
+    hour = int(seconds / 3600)
+    seconds = seconds % 3600
+    minute = int(seconds / 60)
+    second = seconds % 60
+    return hour, minute, second
+
+
+def juliandate(date: datetime) -> float:
+    return JulianDate(date).result
+
+
+def calendardate(juliandate: float) -> datetime:
+    return CalendarDate(juliandate).result