#-index-name: Ukrainian
#-display-name: Ukrainian braille

#+locale: uk
#+type: literary

# -----------------
# TODO: Please add a reference to official documentation about
# the implemented braille code. Preferably submit the documents
# to https://github.com/liblouis/braille-specs.
# -----------------

#-copyright: Bert Frees
#-copyright: EAC "Lemur"
#-license: LGPLv2.1

#  Copyright (C) 2017 EAC "Lemur" <www.trosti.com.ua>
#  Copyright (C) 2018 Bert Frees <bertfrees@gmail.com>
#
#  This file is part of liblouis.
#
#  liblouis is free software: you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as
#  published by the Free Software Foundation, either version 2.1 of the
#  License, or (at your option) any later version.
#
#  liblouis 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
#  Lesser General Public License for more details.
#
#  You should have received a copy of the GNU Lesser General Public
#  License along with liblouis. If not, see
#  <http://www.gnu.org/licenses/>.

# Maintained by Sergiy Moskalets.

#-maintainer-name: Sergiy Moskalets
#-maintainer-url: www.trosti.com.ua

# -----------------

# Ukrainian braille is largely the same as Russian braille
include ru-litbrl.ctb

# The Ukrainian alphabet has 4 letters that are not in the Russian
# alphabet, namely Є, І, Ї and Ґ. Like in ru-chardefs.cti, the
# following definitions have dot 9 set to make them distinguishable
# from the Latin letters. Dot 7 indicates uppercase letters.
uplow \x0404\x0454 34579,3459      CYRILLIC LETTER IE   Єє
uplow \x0406\x0456 1345679,134569  CYRILLIC LETTER I    Іі
uplow \x0407\x0457 145679,14569    CYRILLIC LETTER II   Її
uplow \x0490\x0491 1245679,124569  CYRILLIC LETTER GE   Ґґ

# Extend classes defined in ru-litbrl.ctb
class uppercyrillic \x0404\x0406\x0407\x0490
class lowercyrillic \x0454\x0456\x0457\x0491
class cyrillic \x0404\x0406\x0407\x0490\x0454\x0456\x0457\x0491

# Remove dot 7 from uppercase letters
# Note that we can use the same name for the swapdd rule, but the pass4 rule needs to be repeated
swapdd uppertolower 34579,1345679,145679,1245679 3459,134569,14569,124569
noback pass4 %uppertolower %uppertolower

# The Russian alphabet also has 4 letters that are not in the
# Ukrainian alphabet, namely Ё, Ъ, Ы and Э. For convenience these
# definitions are not removed however. They're needed to work
# comfortable with both languages. These 4 Russian letters are defined
# in ru-chardefs.cti as follows:

# uplow \x0401\x0451 1679,169         CYRILLIC LETTER IO          Ё
# uplow \x042A\x044A 1235679,123569   CYRILLIC LETTER HARD SIGN   Ъ
# uplow \x042B\x044B 234679,23469     CYRILLIC LETTER YERU        Ы
# uplow \x042D\x044D 24679,2469       CYRILLIC LETTER E           Э

# Math
always \x00BD 3456-1-23  VULGAR FRACTION ONE HALF ½ (overrides rule in chardefs.cti)

# Unicode braille patterns
include braille-patterns.cti