query: Add --calendar-year and --fiscal-year shortcuts.

conservancy_beancount/reports/query.py

@@ -419,6 +419,35 @@ class ReportFormat(enum.Enum):
     ODS = 'ods'
 
 
+class SetCYDates(argparse.Action):
+    def __call__(self,
+                 parser: argparse.ArgumentParser,
+                 namespace: argparse.Namespace,
+                 values: Union[Sequence[Any], str, None]=None,
+                 option_string: Optional[str]=None,
+    ) -> None:
+        value = cliutil.year_or_date_arg(str(values))
+        if isinstance(value, int):
+            value = datetime.date(value, 1, 1)
+        namespace.start_date = value
+        namespace.stop_date = cliutil.diff_year(value, 1)
+
+
+class SetFYDates(argparse.Action):
+    def __call__(self,
+                 parser: argparse.ArgumentParser,
+                 namespace: argparse.Namespace,
+                 values: Union[Sequence[Any], str, None]=None,
+                 option_string: Optional[str]=None,
+    ) -> None:
+        value = cliutil.year_or_date_arg(str(values))
+        namespace.start_date = value
+        if isinstance(value, int):
+            namespace.stop_date = value
+        else:
+            namespace.stop_date = value + datetime.timedelta(days=1)
+
+
 def parse_arguments(arglist: Optional[Sequence[str]]=None) -> argparse.Namespace:
     parser = argparse.ArgumentParser(prog=PROGNAME)
     cliutil.add_version_argument(parser)
@@ -438,6 +467,20 @@ full date, and %(prog)s will use the fiscal year for that date.
         type=cliutil.year_or_date_arg,
         help="""End loading entries at this fiscal year. You can specify a
 full date, and %(prog)s will use the fiscal year for that date.
+""")
+    parser.add_argument(
+        '--calendar-year', '--cy',
+        action=SetCYDates,
+        metavar='YEAR',
+        help="""Shortcut to set --begin and --end to load a single calendar year.
+You can specify a full date, or just a year to start from January 1.
+""")
+    parser.add_argument(
+        '--fiscal-year', '--fy',
+        action=SetFYDates,
+        metavar='YEAR',
+        help="""Shortcut to set --begin and --end to load a single fiscal year.
+You can specify a full date, and %(prog)s will use the fiscal year for that date.
 """)
     cliutil.add_rewrite_rules_argument(parser)
     format_arg = cliutil.EnumArgument(ReportFormat)