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#!/usr/bin/python3
# vim:set et sts=4 sw=4:
# -*- coding: utf-8 -*-
#
# ibus-anthy - The Anthy engine for IBus
#
# Copyright (c) 2026 Takao Fujiwara <takao.fujiwara1@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from datetime import date
from os import path
import getopt
import locale
import re
import sys
_prgname = ""
class JapaneseEra(object):
VERSION = 1
ERA_FIRST = 2019
HIRAGANA_ERA = 'れいわ'
KANJI_ERA = '令和'
KANJI_ERA_PREV = '平成'
__S_YEAR = 0
__M_YEAR = ''
__narrow_to_wide_map = None
_check = False
_output_file = None
_parse_file = None
_parse_contents = None
def __init__(self):
if self._parse_file == None:
print("%s.parse_args() should be called before the instance "
"is generated." % str(self), file=sys.stderr)
sys.exit(1)
self.__narrow_to_wide_map = str.maketrans('0123456789',
'０１２３４５６７８９')
self.__S_YEAR = date.today().year
self.__M_YEAR = str(self.__S_YEAR).translate(self.__narrow_to_wide_map)
parse_file = open(self._parse_file)
self._parse_contents = parse_file.read()
parse_file.close()
@classmethod
def parse_args(cls)->None:
shortopt = 'cho:v'
longopt = ['check', 'help', 'output=', 'version']
try:
opts, args = getopt.gnu_getopt(sys.argv[1:], shortopt, longopt)
except getopt.GetoptError as err:
cls.print_help(sys.stderr, 1)
for o, a in opts:
if o in ('-h', '--help'):
cls.print_help(sys.stdout)
elif o in ('-c', '--check'):
cls._check = True
elif o in ('-o', '--output'):
cls._output_file = a
elif o in ('-v', '--version'):
print("%s Version %d" % (_prgname, cls.VERSION))
sys.exit(0)
else:
print('Unknown argument: %s' % o, file=sys.stderr)
cls.print_help(sys.stderr, 1)
if len(args) == 0:
cls.print_help(sys.stderr, 1)
cls._parse_file = args[0]
@staticmethod
def print_help(out, v=0)->None:
print("%s [OPTIONS...] ERA_FILE" % _prgname, file=out)
print("This replaces @HIRAGANA_TO_LATEST_ERA@ with latest Japanese Era "
"in ERA_FILE",
file=out)
print('OPTIONS', file=out)
print('-c, --check Check if the latest Japanese Era in ERA_FILE.',
file=out)
print('-h, --help Show this message.', file=out)
print('-v, --version Show version.', file=out)
sys.exit(v)
def run(self)->None:
if self._check:
self.check()
else:
self.update_file_with_keywords()
def check(self)->None:
if self._parse_contents == None:
assert()
pat = r'{}.*'.format(self.__M_YEAR)
res = re.findall(pat, self._parse_contents, re.MULTILINE)
if res:
print(res)
else:
print("This year {0} is not included in {1}".format(
self.__M_YEAR, self._parse_file), file=sys.stderr)
sys.exit(1)
def update_file_with_keywords(self)->None:
if self._parse_contents == None:
assert()
HIRAGANA_TO_LATEST_ERA = ''
YEAR_TO_LATEST_ERA = ''
s_n = 1
s_y = self.ERA_FIRST
while(s_y <= self.__S_YEAR):
m_n = str(s_n).translate(self.__narrow_to_wide_map)
m_y = str(s_y).translate(self.__narrow_to_wide_map)
HIRAGANA_TO_LATEST_ERA = \
"""{0}{1}{2} #T35*500 {3}{4}
{5}{6} #T35*500 {7}
""".format(HIRAGANA_TO_LATEST_ERA,
self.HIRAGANA_ERA, m_n,
self.KANJI_ERA, s_n,
self.HIRAGANA_ERA, m_n,
s_y)
YEAR_TO_LATEST_ERA = \
"""{0}{1} #T35*500 {2}{3}
""".format(YEAR_TO_LATEST_ERA,
m_y,
self.KANJI_ERA, s_n)
s_n = s_n + 1
s_y = s_y + 1
HIRAGANA_TO_LATEST_ERA = HIRAGANA_TO_LATEST_ERA.strip()
YEAR_TO_LATEST_ERA = YEAR_TO_LATEST_ERA.strip()
tmp = self._parse_contents.replace(
'@HIRAGANA_TO_REIWA@',
HIRAGANA_TO_LATEST_ERA).replace(
'@YEAR_TO_REIWA@',
YEAR_TO_LATEST_ERA)
s_y = self.ERA_FIRST
m_y = str(s_y).translate(self.__narrow_to_wide_map)
pat = r'({0} #T35\*500 {1}[0-9]+)\n({2} #T35\*500 {3}1)'.format(
m_y, self.KANJI_ERA_PREV, m_y, self.KANJI_ERA)
# The lest Era should be first.
res = re.sub(pat, r'\2\n\1', tmp)
if res:
if self._output_file:
f = open(self._output_file, mode='w')
f.write(res)
f.flush()
f.close()
else:
print(res)
else:
print('Failed to find %s in %s' % (pat, self._parse_file),
file=sys.stderr)
if self._output_file:
f = open(self._output_file, mode='w')
f.write(tmp)
f.flush()
f.close()
else:
print(tmp)
def main()->None:
try:
locale.setlocale(locale.LC_ALL, '')
except:
pass
global _prgname
_prgname = path.basename(sys.argv[0])
JapaneseEra.parse_args()
era = JapaneseEra()
era.run()
if __name__ == '__main__':
main()
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