Primer commit del proyecto RSS

venv/lib/python3.12/site-packages/apscheduler/triggers/cron/fields.py

@@ -0,0 +1,149 @@
+"""Fields represent CronTrigger options which map to :class:`~datetime.datetime` fields."""
+
+__all__ = (
+    "MIN_VALUES",
+    "MAX_VALUES",
+    "DEFAULT_VALUES",
+    "BaseField",
+    "WeekField",
+    "DayOfMonthField",
+    "DayOfWeekField",
+)
+
+import re
+from calendar import monthrange
+
+from apscheduler.triggers.cron.expressions import (
+    AllExpression,
+    LastDayOfMonthExpression,
+    MonthRangeExpression,
+    RangeExpression,
+    WeekdayPositionExpression,
+    WeekdayRangeExpression,
+)
+
+MIN_VALUES = {
+    "year": 1970,
+    "month": 1,
+    "day": 1,
+    "week": 1,
+    "day_of_week": 0,
+    "hour": 0,
+    "minute": 0,
+    "second": 0,
+}
+MAX_VALUES = {
+    "year": 9999,
+    "month": 12,
+    "day": 31,
+    "week": 53,
+    "day_of_week": 6,
+    "hour": 23,
+    "minute": 59,
+    "second": 59,
+}
+DEFAULT_VALUES = {
+    "year": "*",
+    "month": 1,
+    "day": 1,
+    "week": "*",
+    "day_of_week": "*",
+    "hour": 0,
+    "minute": 0,
+    "second": 0,
+}
+SEPARATOR = re.compile(" *, *")
+
+
+class BaseField:
+    REAL = True
+    COMPILERS = [AllExpression, RangeExpression]
+
+    def __init__(self, name, exprs, is_default=False):
+        self.name = name
+        self.is_default = is_default
+        self.compile_expressions(exprs)
+
+    def get_min(self, dateval):
+        return MIN_VALUES[self.name]
+
+    def get_max(self, dateval):
+        return MAX_VALUES[self.name]
+
+    def get_value(self, dateval):
+        return getattr(dateval, self.name)
+
+    def get_next_value(self, dateval):
+        smallest = None
+        for expr in self.expressions:
+            value = expr.get_next_value(dateval, self)
+            if smallest is None or (value is not None and value < smallest):
+                smallest = value
+
+        return smallest
+
+    def compile_expressions(self, exprs):
+        self.expressions = []
+
+        # Split a comma-separated expression list, if any
+        for expr in SEPARATOR.split(str(exprs).strip()):
+            self.compile_expression(expr)
+
+    def compile_expression(self, expr):
+        for compiler in self.COMPILERS:
+            match = compiler.value_re.match(expr)
+            if match:
+                compiled_expr = compiler(**match.groupdict())
+
+                try:
+                    compiled_expr.validate_range(self.name)
+                except ValueError as e:
+                    raise ValueError(
+                        f"Error validating expression {expr!r}: {e}"
+                    ) from None
+
+                self.expressions.append(compiled_expr)
+                return
+
+        raise ValueError(f'Unrecognized expression "{expr}" for field "{self.name}"')
+
+    def __eq__(self, other):
+        return (
+            isinstance(self, self.__class__) and self.expressions == other.expressions
+        )
+
+    def __str__(self):
+        expr_strings = (str(e) for e in self.expressions)
+        return ",".join(expr_strings)
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}('{self.name}', '{self}')"
+
+
+class WeekField(BaseField):
+    REAL = False
+
+    def get_value(self, dateval):
+        return dateval.isocalendar()[1]
+
+
+class DayOfMonthField(BaseField):
+    COMPILERS = BaseField.COMPILERS + [
+        WeekdayPositionExpression,
+        LastDayOfMonthExpression,
+    ]
+
+    def get_max(self, dateval):
+        return monthrange(dateval.year, dateval.month)[1]
+
+
+class DayOfWeekField(BaseField):
+    REAL = False
+    COMPILERS = BaseField.COMPILERS + [WeekdayRangeExpression]
+
+    def get_value(self, dateval):
+        return dateval.weekday()
+
+
+class MonthField(BaseField):
+    COMPILERS = BaseField.COMPILERS + [MonthRangeExpression]