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

# note: a global filter is more efficient, but MUST include all source chars
:: [[\u0000-\u007E 、。 \u3099-゜ ァ-ー ｡-ﾟー[:Hiragana:] [:Katakana:] [:nonspacing mark:]]-[\u309B \u309C]];
:: NFKC (NFC);
# Hiragana-Katakana
# This is largely a one-to-one mapping, but it has a
# few kinks:
# 1. The Katakana va/vi/ve/vo (30F7-30FA) have no
# Hiragana equivalents.  We use Hiragana wa/wi/we/wo
# (308F-3092) with a voicing mark (3099), which is
# semantically equivalent.  However, this is a non-
# roundtripping transformation.
# 2. The Katakana small ka/ke (30F5,30F6) have no
# Hiragana equiavlents.  We convert them to normal
# Hiragana ka/ke (304B,3051).  This is a one-way
# information-losing transformation and precludes
# round-tripping of 30F5 and 30F6.
# 3. The combining marks 3099-309C are in the Hiragana
# block, but they apply to Katakana as well, so we
# leave them untouched.
# 4. The Katakana prolonged sound mark 30FC doubles the
# preceding vowel.  This is a one-way information-
# losing transformation from Katakana to Hiragana.
# 5. The Katakana middle dot separates words in foreign
# expressions; we leave this unmodified.
# The above points preclude successful round-trip
# transformations of arbitrary input text.  However,
# they provide naturalistic results that should conform
# to user expectations.
# Combining equivalents va/vi/ve/vo
わ\u3099 ↔ ヷ;
ゐ\u3099 ↔ ヸ;
ゑ\u3099 ↔ ヹ;
を\u3099 ↔ ヺ;
# One-to-one mappings, main block
# 3041:3094 ↔ 30A1:30F4
# 309D,E ↔ 30FD,E
ぁ ↔ ァ;
あ ↔ ア;
ぃ ↔ ィ;
い ↔ イ;
ぅ ↔ ゥ;
う ↔ ウ;
ぇ ↔ ェ;
え ↔ エ;
ぉ ↔ ォ;
お ↔ オ;
か ↔ カ;
が ↔ ガ;
き ↔ キ;
ぎ ↔ ギ;
く ↔ ク;
ぐ ↔ グ;
け ↔ ケ;
げ ↔ ゲ;
こ ↔ コ;
ご ↔ ゴ;
さ ↔ サ;
ざ ↔ ザ;
し ↔ シ;
じ ↔ ジ;
す ↔ ス;
ず ↔ ズ;
せ ↔ セ;
ぜ ↔ ゼ;
そ ↔ ソ;
ぞ ↔ ゾ;
た ↔ タ;
だ ↔ ダ;
ち ↔ チ;
ぢ ↔ ヂ;
っ ↔ ッ;
つ ↔ ツ;
づ ↔ ヅ;
て ↔ テ;
で ↔ デ;
と ↔ ト;
ど ↔ ド;
な ↔ ナ;
に ↔ ニ;
ぬ ↔ ヌ;
ね ↔ ネ;
の ↔ ノ;
は ↔ ハ;
ば ↔ バ;
ぱ ↔ パ;
ひ ↔ ヒ;
び ↔ ビ;
ぴ ↔ ピ;
ふ ↔ フ;
ぶ ↔ ブ;
ぷ ↔ プ;
へ ↔ ヘ;
べ ↔ ベ;
ぺ ↔ ペ;
ほ ↔ ホ;
ぼ ↔ ボ;
ぽ ↔ ポ;
ま ↔ マ;
み ↔ ミ;
む ↔ ム;
め ↔ メ;
も ↔ モ;
ゃ ↔ ャ;
や ↔ ヤ;
ゅ ↔ ュ;
ゆ ↔ ユ;
ょ ↔ ョ;
よ ↔ ヨ;
ら ↔ ラ;
り ↔ リ;
る ↔ ル;
れ ↔ レ;
ろ ↔ ロ;
ゎ ↔ ヮ;
わ ↔ ワ;
ゐ ↔ ヰ;
ゑ ↔ ヱ;
を ↔ ヲ;
ん ↔ ン;
ゔ ↔ ヴ;
ゝ ↔ ヽ;
ゞ ↔ ヾ;
# One-way Katakana-Hiragana xform of small K ka/ke to
# normal H ka/ke.
か ← ヵ;
け ← ヶ;
# Katakana followed by a prolonged sound mark 30FC has
# its final vowel doubled.  This is a Katakana-Hiragana
# one-way information-losing transformation.  We
# include the small Katakana (e.g., small A 3041) and
# do not distinguish them from their large
# counterparts.  It doesn't make sense to double a
# small counterpart vowel as a small Hiragana vowel, so
# we don't do so.  In natural text this should never
# occur anyway.  If a 30FC is seen without a preceding
# vowel sound (e.g., after n 30F3) we do not change it.
### $long = ー;
# The following categories are Hiragana, not Katakana
# as might be expected, since by the time we get to the
# 30FC, the preceding character will have already been
# transformed to Hiragana.
# {The following mechanically generated from the
# Unicode 3.0 data:}
$xa = [ \
ぁ あ か が さ ざ \
た だ な は ば ぱ \
ま ゃ や ら ゎ わ \
];
$xi = [ \
ぃ い き ぎ し じ \
ち ぢ に ひ び ぴ \
み り ゐ \
];
$xu = [ \
ぅ う く ぐ す ず \
っ つ づ ぬ ふ ぶ \
ぷ む ゅ ゆ る ゔ \
];
$xe = [ \
ぇ え け げ せ ぜ \
て で ね へ べ ぺ \
め れ ゑ \
];
$xo = [ \
ぉ お こ ご そ ぞ \
と ど の ほ ぼ ぽ \
も ょ よ ろ を \
];
あ ← $xa {ー};
い ← $xi {ー};
う ← $xu {ー};
え ← $xe {ー};
お ← $xo {ー};
:: NFC (NFKC) ;
# note: a global filter is more efficient, but MUST include all source chars!!
:: ([[\u0000-\u007E 、。 \u3099-゜ ァ-ー ｡-ﾟー[:Hiragana:] [:Katakana:] [:nonspacing mark:]]-[\u309B \u309C]]);
# eof

