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Moved the period specification parser from the "accounting.report.period.period" module to the "accounting.report.period.parser" module.

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依瑪貓 2023-03-09 19:10:21 +08:00
parent c17430d211
commit 060a52f7a2
2 changed files with 89 additions and 68 deletions
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87
src/accounting/report/period/parser.py Normal file
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@ -0,0 +1,87 @@
# The Mia! Accounting Flask Project.
# Author: imacat@mail.imacat.idv.tw (imacat), 2023/3/4
# Copyright (c) 2023 imacat.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""The period specification parser.
"""
import calendar
import re
from datetime import date
DATE_SPEC_RE: str = r"(\d{4})(?:-(\d{2})(?:-(\d{2}))?)?"
"""The regular expression of a date specification."""
def parse_spec(text: str) -> tuple[date | None, date | None]:
"""Parses the period specification.
:param text: The period specification.
:return: The start and end day of the period. The start and end day
may be None.
:raise ValueError: When the date is invalid.
"""
if text == "-":
return None, None
m = re.match(f"^{DATE_SPEC_RE}$", text)
if m is not None:
return __get_start(m[1], m[2], m[3]), \
__get_end(m[1], m[2], m[3])
m = re.match(f"^{DATE_SPEC_RE}-$", text)
if m is not None:
return __get_start(m[1], m[2], m[3]), None
m = re.match(f"-{DATE_SPEC_RE}$", text)
if m is not None:
return None, __get_end(m[1], m[2], m[3])
m = re.match(f"^{DATE_SPEC_RE}-{DATE_SPEC_RE}$", text)
if m is not None:
return __get_start(m[1], m[2], m[3]), \
__get_end(m[4], m[5], m[6])
raise ValueError
def __get_start(year: str, month: str | None, day: str | None) -> date:
"""Returns the start of the period from the date representation.
:param year: The year.
:param month: The month, if any.
:param day: The day, if any.
:return: The start of the period.
:raise ValueError: When the date is invalid.
"""
if day is not None:
return date(int(year), int(month), int(day))
if month is not None:
return date(int(year), int(month), 1)
return date(int(year), 1, 1)
def __get_end(year: str, month: str | None, day: str | None) -> date:
"""Returns the end of the period from the date representation.
:param year: The year.
:param month: The month, if any.
:param day: The day, if any.
:return: The end of the period.
:raise ValueError: When the date is invalid.
"""
if day is not None:
return date(int(year), int(month), int(day))
if month is not None:
year_n: int = int(year)
month_n: int = int(month)
day_n: int = calendar.monthrange(year_n, month_n)[1]
return date(year_n, month_n, day_n)
return date(int(year), 12, 31)

70
src/accounting/report/period/period.py
View File

@ -21,12 +21,12 @@ This file is largely taken from the NanoParma ERP project, first written in
"""
import calendar
import re
import typing as t
from datetime import date, timedelta
from accounting.locale import gettext
from .description import PeriodDescription
from .parser import parse_spec
from .specification import PeriodSpecification
@ -123,7 +123,7 @@ class Period:
}
if spec in named_periods:
return named_periods[spec]()
start, end = _parse_period_spec(spec)
start, end = parse_spec(spec)
if start is not None and end is not None and start > end:
raise ValueError
return cls(start, end)
@ -302,72 +302,6 @@ class YearPeriod(Period):
super().__init__(start, end)
DATE_SPEC_RE: str = r"(\d{4})(?:-(\d{2})(?:-(\d{2}))?)?"
"""The regular expression of a date specification."""
def _parse_period_spec(text: str) -> tuple[date | None, date | None]:
"""Parses the period specification.
:param text: The period specification.
:return: The start and end day of the period. The start and end day
may be None.
:raise ValueError: When the date is invalid.
"""
if text == "-":
return None, None
m = re.match(f"^{DATE_SPEC_RE}$", text)
if m is not None:
return __get_start(m[1], m[2], m[3]), \
__get_end(m[1], m[2], m[3])
m = re.match(f"^{DATE_SPEC_RE}-$", text)
if m is not None:
return __get_start(m[1], m[2], m[3]), None
m = re.match(f"-{DATE_SPEC_RE}$", text)
if m is not None:
return None, __get_end(m[1], m[2], m[3])
m = re.match(f"^{DATE_SPEC_RE}-{DATE_SPEC_RE}$", text)
if m is not None:
return __get_start(m[1], m[2], m[3]), \
__get_end(m[4], m[5], m[6])
raise ValueError
def __get_start(year: str, month: str | None, day: str | None) -> date:
"""Returns the start of the period from the date representation.
:param year: The year.
:param month: The month, if any.
:param day: The day, if any.
:return: The start of the period.
:raise ValueError: When the date is invalid.
"""
if day is not None:
return date(int(year), int(month), int(day))
if month is not None:
return date(int(year), int(month), 1)
return date(int(year), 1, 1)
def __get_end(year: str, month: str | None, day: str | None) -> date:
"""Returns the end of the period from the date representation.
:param year: The year.
:param month: The month, if any.
:param day: The day, if any.
:return: The end of the period.
:raise ValueError: When the date is invalid.
"""
if day is not None:
return date(int(year), int(month), int(day))
if month is not None:
year_n: int = int(year)
month_n: int = int(month)
day_n: int = calendar.monthrange(year_n, month_n)[1]
return date(year_n, month_n, day_n)
return date(int(year), 12, 31)
def _month_end(day: date) -> date:
"""Returns the end day of month for a date.