~onboard/onboard/1.2

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#!/usr/bin/python3
# -*- coding: utf-8 -*-

# Copyright © 2012 marmuta <marmvta@gmail.com>
#
# This file is part of Onboard.
#
# Onboard 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 3 of the License, or
# (at your option) any later version.
#
# Onboard 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, see <http://www.gnu.org/licenses/>.


import os
import icu

t = icu.Transliterator.createInstance("NFD; [:Nonspacing Mark:] Remove; NFC",
                                      icu.UTransDirection.FORWARD)

print("#")
print("# Generated for Onboard by " + os.path.basename(__file__))
print("#")
print()
print("canonical_equivalents = {")

all_chars = 0xd7ff
table = {}
for i, c in enumerate(chr(i) for i in range(all_chars)): 
    tc = t.transliterate(c)
    if len(tc) == 1 and tc != c:
        equivalents = table.get(tc)
        if not equivalents:
            equivalents = []
            table[tc] = equivalents
        equivalents.append(c)

for key, value in sorted(list(table.items())):
    print(" "*4 + repr(key), ":", repr(value) + ",")

print("}")