# © 2016 and later: Unicode, Inc. and others.
# License & terms of use: http://www.unicode.org/copyright.html#License
#
# File: ru_ru_Latn_BGN.txt
# Generated from CLDR
#

# BGN/PCGN 1947 System
#
# The BGN/PCGN system for Russian was adopted by the BGN in 1944 and
# by the PCGN in 1947 for use in romanizing names written in the
# Russian Cyrillic alphabet.
#
# The Russian Alphabet as defined by the BGN (Page 93):
#     АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ
#     абвгдеёжзийклмнопрстуфхцчшщъыьэюя
#
# Originally prepared by Michael Everson everson@evertype.com
# Fixed by Frank Yung-Fong Tang ftang@google.com
#
# Test Data from http://en.wikipedia.org/wiki/BGN/PCGN_romanization_of_Russian
########################################################################
# MINIMAL FILTER: Russian-Latin
::[АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмнопрстуфхцчшщъыьэюя];
# BUG(ftang) remove the following line. Otherwise the rule for
# Й й Ё ё will break since the rule is written in NFC but
# the line decomposes the text.
# :: NFD (NFC) ;
########################################################################
# Define All Transformation Variables
########################################################################
$prime = ʹ ;
$doublePrime = ʺ ;
$wordBoundary = [^[:L:][:M:][:N:]] ;
$upperVowels = [АЕЁЭИОУЫЮЯ] ;
$lowerVowels = [аеёэиоуыюя] ;
$vowels = [$upperVowels $lowerVowels] ;
$upperConsonants = [[:Uppercase:]-$vowels] ;
$lowerConsonants = [[:Lowercase:]-$vowels] ;
$consonants = [$upperConsonants $lowerConsonants] ;
$upper = [:Uppercase:];
$lower = [:Lowercase:];
########################################################################
# Rules moved to front to avoid masking
########################################################################
$lowerVowels { ы → ·y ;
$upperVowels { [Ыы] → ·Y ;
[$consonants - [Йй]]{Э → ·E ;
[$consonants - [Йй]]{э → ·e ;
[$upperVowels [ЙЪЬ]] { Е } $upper → YE ; # CYRILLIC CAPITAL LETTER IE
[$upperVowels [ЙЪЬ]] { Е → Ye ; # CYRILLIC CAPITAL LETTER IE
[$upperVowels $lowerVowels [ЙйЪъЬь]] { е → ye ; # CYRILLIC SMALL LETTER IE
[$upperVowels [ЙЪЬ]] { Ё } $upper → YË ; # CYRILLIC CAPITAL LETTER IO
[$upperVowels [ЙЪЬ]] { Ё → Yë ; # CYRILLIC CAPITAL LETTER IO
[$upperVowels $lowerVowels [ЙйЪъЬь]] { ё → yë ; # CYRILLIC SMALL LETTER IO
# Since in the above rule we look use the context before the characters,
# we have to perform them in a separate pass before we change the vowels
# the ::Null forces a separate pass.
::Null;
########################################################################
# Start of Alphabetic Transformations
########################################################################
А → A ; # CYRILLIC CAPITAL LETTER A
а → a ; # CYRILLIC SMALL LETTER A
Б → B ; # CYRILLIC CAPITAL LETTER BE
б → b ; # CYRILLIC SMALL LETTER BE
В → V ; # CYRILLIC CAPITAL LETTER VE
в → v ; # CYRILLIC SMALL LETTER VE
Г → G ; # CYRILLIC CAPITAL LETTER GHE
г → g ; # CYRILLIC SMALL LETTER GHE
Д → D ; # CYRILLIC CAPITAL LETTER DE
д → d ; # CYRILLIC SMALL LETTER DE
########################################################################
# BGN Page 94 Rule 1:
# # The character e should be romanized ye
# initially, after the vowel # characters a, e, ё, и, о, у, ы, э, ю,
# and я, and after й, ъ, and ь.
# In all other instances, it should
# be romanized e.
########################################################################
# BUG(ftang)- the following two lines said BEFORE the vowels, instead of AFTER
# Е}[$upperVowels [ЙЪЬ]] → YE ; # CYRILLIC CAPITAL LETTER IE
# Е}[$lowerVowels [йъь]] → Ye ; # CYRILLIC CAPITAL LETTER IE
$wordBoundary{Е} $upper → YE ; # CYRILLIC CAPITAL LETTER IE
$wordBoundary{Е → Ye ; # CYRILLIC CAPITAL LETTER IE
Е → E ; # CYRILLIC CAPITAL LETTER IE
#
# BUG(ftang)- the following line said BEFORE the vowels, instead of AFTER
# е}[$upperVowels $lowerVowels [ЙйЪъЬь]] → ye ; # CYRILLIC SMALL LETTER IE
$wordBoundary{е → ye ; # CYRILLIC SMALL LETTER IE
е → e ; # CYRILLIC SMALL LETTER IE
########################################################################
# End of Rule 1
########################################################################
########################################################################
# BGN Page 94 Rule 2:
#
# The character ё is not considered a separate character of the
# Russian alphabet and the dieresis is generally not shown. When the
# dieresis is shown, the character should be romanized yë initially,
# after the vowel characters a, e, ё, и, о, у, ы, э, ю, and я, and
# after й, ъ, and ь, In all other instances, it should be romanized
# ё. When the dieresis is not shown, the character may still be
# romanized in the preceding manner or, alternatively, in accordance
# with note 1.
########################################################################
# BUG(ftang)- the following two lines said BEFORE the vowels, instead of AFTER
# Ё}[$upperVowels [ЙЪЬ]] → YË ; # CYRILLIC CAPITAL LETTER IO
# Ё}[$lowerVowels [йъь]] → Yë ; # CYRILLIC CAPITAL LETTER IO
$wordBoundary {Ё} $upper → YË ; # CYRILLIC CAPITAL LETTER IO
$wordBoundary {Ё} $lower → Yë ; # CYRILLIC CAPITAL LETTER IO
Ё → Ë ; # CYRILLIC CAPITAL LETTER IO
# BUG(ftang)- the following line said BEFORE the vowels, instead of AFTER
# ё}[$upperVowels $lowerVowels [ЙйЪъЬь]] → yë ; # CYRILLIC SMALL LETTER IO
$wordBoundary{ё → yë ; # CYRILLIC SMALL LETTER IO
ё → ë ; # CYRILLIC SMALL LETTER IO
########################################################################
# End of Rule 2
########################################################################
Ж} $lower → Zh ; # CYRILLIC CAPITAL LETTER ZHE
Ж → ZH ; # CYRILLIC CAPITAL LETTER ZHE
ж → zh ; # CYRILLIC SMALL LETTER ZHE
########################################################################
# BGN Page 94 Rule 3.4
# э after any consonant character except
# й becomes ·е
########################################################################
З → Z ; # CYRILLIC CAPITAL LETTER ZE
з → z ; # CYRILLIC SMALL LETTER ZE
# BUG(ftang) The following two lines said those consonant becomes ·е
# [$consonants - [Йй]]}Э → ·Е ;
# [$consonants - [Йй]]}э → ·е ;
########################################################################
# End of Rule 3.4
########################################################################
И → I ; # CYRILLIC CAPITAL LETTER I
и → i ; # CYRILLIC SMALL LETTER I
########################################################################
# BGN Page 94 Rule 3:
#
# Unusual Russian character sequences occurring primarily in
# non-Russian-language names may be romanized as shown below in order
# to provide differentiation from regularly-occurring digraphs and
# character sequences.
#
# BGN Page 94 Rule 3.1
# й before а, у, ы, or э becomes у·
########################################################################
Й}[АаУуЫыЭэ] → Y· ; # CYRILLIC CAPITAL LETTER I
й}[АаУуЫыЭэ] → y· ; # CYRILLIC SMALL LETTER I
Й → Y ; # CYRILLIC CAPITAL LETTER I
й → y ; # CYRILLIC SMALL LETTER I
########################################################################
# End Rule 3.1
########################################################################
К → K ; # CYRILLIC CAPITAL LETTER KA
к → k ; # CYRILLIC SMALL LETTER KA
Л → L ; # CYRILLIC CAPITAL LETTER EL
л → l ; # CYRILLIC SMALL LETTER EL
М → M ; # CYRILLIC CAPITAL LETTER EM
м → m ; # CYRILLIC SMALL LETTER EM
Н → N ; # CYRILLIC CAPITAL LETTER EN
н → n ; # CYRILLIC SMALL LETTER EN
О → O ; # CYRILLIC CAPITAL LETTER O
о → o ; # CYRILLIC SMALL LETTER O
П → P ; # CYRILLIC CAPITAL LETTER PE
п → p ; # CYRILLIC SMALL LETTER PE
Р → R ; # CYRILLIC CAPITAL LETTER ER
р → r ; # CYRILLIC SMALL LETTER ER
С → S ; # CYRILLIC CAPITAL LETTER ES
с → s ; # CYRILLIC SMALL LETTER ES
########################################################################
# BGN Page 94 Rule 3.5
# тс becomes t·s
########################################################################
ТС → T·S ; # CYRILLIC CAPITAL LETTER TE
Тс → T·s ; # CYRILLIC CAPITAL LETTER TE
тс → t·s ; # CYRILLIC SMALL LETTER TE
Т → T ; # CYRILLIC CAPITAL LETTER TE
т → t ; # CYRILLIC SMALL LETTER TE
########################################################################
# End Rule 3.5
########################################################################
У → U ; # CYRILLIC CAPITAL LETTER U
у → u ; # CYRILLIC SMALL LETTER U
Ф → F ; # CYRILLIC CAPITAL LETTER EF
ф → f ; # CYRILLIC SMALL LETTER EF
Х} $lower → Kh ; # CYRILLIC CAPITAL LETTER HA
Х → KH ; # CYRILLIC CAPITAL LETTER HA
х → kh ; # CYRILLIC SMALL LETTER HA
Ц} $lower → Ts ; # CYRILLIC CAPITAL LETTER TSE
Ц → TS ; # CYRILLIC CAPITAL LETTER TSE
ц → ts ; # CYRILLIC SMALL LETTER TSE
Ч} $lower → Ch ; # CYRILLIC CAPITAL LETTER CHE
Ч → CH ; # CYRILLIC CAPITAL LETTER CHE
ч → ch ; # CYRILLIC SMALL LETTER CHE
########################################################################
# BGN Page 94 Rule 3.6
# шч becomes sh·ch
########################################################################
ШЧ → SH·CH ; # CYRILLIC CAPITAL LETTER SHA
Шч → Sh·ch ; # CYRILLIC CAPITAL LETTER SHA
шч → sh·ch ; # CYRILLIC SMALL LETTER SHA
Ш} $lower → Sh ; # CYRILLIC CAPITAL LETTER SHA
Ш → SH ; # CYRILLIC CAPITAL LETTER SHA
ш → sh ; # CYRILLIC SMALL LETTER SHA
Щ} $lower → Shch ; # CYRILLIC CAPITAL LETTER SHCHA
Щ → SHCH ; # CYRILLIC CAPITAL LETTER SHCHA
щ → shch ; # CYRILLIC SMALL LETTER SHCHA
########################################################################
# End Rule 3.6
########################################################################
Ъ → $doublePrime ; # CYRILLIC CAPITAL LETTER HARD SIGN
ъ → $doublePrime ; # CYRILLIC SMALL LETTER HARD SIGN
########################################################################
# BGN Page 94 Rule 3.2
# ы before а, у, ы, or э becomes у·
#
# BGN Page 94 Rule 3.3
# ы after any vowel character becomes ·у
########################################################################
#
# BUG(ftang) the following line said the vowels will change
# $vowels}Ы → ·Y ; # CYRILLIC CAPITAL LETTER I
# $vowels}ы → ·y ; # CYRILLIC CAPITAL LETTER I
Ы}[АаУуЫыЭэ] → Y· ; # CYRILLIC CAPITAL LETTER YERU
ы}[ауыэ] → y· ; # CYRILLIC SMALL LETTER YERU
Ы → Y ; # CYRILLIC CAPITAL LETTER YERU
ы → y ; # CYRILLIC SMALL LETTER YERU
########################################################################
# End Rule 3.2 and 3.3
########################################################################
Ь → $prime ; # CYRILLIC CAPITAL LETTER SOFT SIGN
ь → $prime ; # CYRILLIC SMALL LETTER SOFT SIGN
Э → E ; # CYRILLIC CAPITAL LETTER E
э → e ; # CYRILLIC SMALL LETTER E
Ю} $lower → Yu ; # CYRILLIC CAPITAL LETTER YU
Ю → YU ; # CYRILLIC CAPITAL LETTER YU
ю → yu ; # CYRILLIC SMALL LETTER YU
Я} $lower → Ya ; # CYRILLIC CAPITAL LETTER YA
Я → YA ; # CYRILLIC CAPITAL LETTER YA
я → ya ; # CYRILLIC SMALL LETTER YA

