19.0 vanilla

odoo-bringout-oca-ocb-spreadsheet/spreadsheet/utils/formatting.py

@@ -0,0 +1,78 @@
+import re
+from datetime import datetime, timedelta
+
+import pytz
+
+strftime_to_spreadsheet_time_format_table = {
+    "%H": "hh",
+    "%I": "hh",
+    "%M": "mm",
+    "%S": "ss",
+}
+
+strftime_to_spreadsheet_dateformat_table = {
+    "%Y": "yyyy",
+    "%y": "yy",
+    "%m": "mm",
+    "%b": "mmm",
+    "%B": "mmmm",
+    "%d": "dd",
+    "%a": "ddd",
+    "%A": "dddd",
+}
+
+
+def strftime_format_to_spreadsheet_time_format(strf_format):
+    """Convert a strftime format to a spreadsheet time format.
+    """
+
+    twelve_hour_system = False
+    parts = []
+    for part in re.finditer(r"(%.)", strf_format):
+        symbol = part.group(1)
+        spreadsheet_symbol = strftime_to_spreadsheet_time_format_table.get(symbol)
+        if spreadsheet_symbol:
+            parts.append(spreadsheet_symbol)
+        if symbol == "%I" or symbol == "%p":
+            twelve_hour_system = True
+
+    separator = re.search(r"(:| )", strf_format)
+    separator = separator.group(1) if separator else ":"
+
+    return separator.join(parts) + (" a" if twelve_hour_system else "")
+
+
+def strftime_format_to_spreadsheet_date_format(strf_format):
+    """Convert a strftime format to a spreadsheet date format.
+    """
+    parts = []
+    for part in re.finditer(r"(%.)", strf_format):
+        symbol = part.group(1)
+        spreadsheet_symbol = strftime_to_spreadsheet_dateformat_table.get(symbol)
+        if spreadsheet_symbol:
+            parts.append(spreadsheet_symbol)
+
+    separator = re.search(r"(/|-| )", strf_format)
+    separator = separator.group(1) if separator else "/"
+
+    return separator.join(parts)
+
+
+INITIAL_1900_DAY = datetime(1899, 12, 30)
+SECONDS_PER_DAY = 24 * 60 * 60
+
+
+def datetime_to_spreadsheet_date_number(dt, tz_name):
+    context_tz = pytz.timezone(tz_name)
+    localized_datetime = dt.astimezone(context_tz)
+    offset = localized_datetime.utcoffset() / timedelta(seconds=1)
+    timestamp = dt.timestamp() + offset
+
+    delta = timestamp - INITIAL_1900_DAY.timestamp()
+    return delta / SECONDS_PER_DAY
+
+
+def date_to_spreadsheet_date_number(d):
+    dt = datetime.combine(d, datetime.min.time())
+    delta = dt.timestamp() - INITIAL_1900_DAY.timestamp()
+    return delta / SECONDS_PER_DAY