source/data/translit/t_Hira_Kana.txt

 // -*- Coding: utf-8; -*-
//--------------------------------------------------------------------
// Copyright (c) 1999-2002, International Business Machines
// Corporation and others.  All Rights Reserved.
//--------------------------------------------------------------------
// THIS IS A MACHINE-GENERATED FILE
// Tool: dumpicurules.bat
// Source: ../../../impl/data/Transliterator_Hiragana_Katakana.txt
// Date: Sat Jul 27 10:31:07 2002
//--------------------------------------------------------------------

// Hiragana_Katakana

t_Hira_Kana {
  Rule {
//--------------------------------------------------------------------
//--------------------------------------------------------------------
//--------------------------------------------------------------------

// note: a global filter is more efficient, but MUST include all source chars
":: [\\u0000-\u007E \u3001\u3002 \u3099-\u309C \u30A1-\u30FC \uFF61-\uFF9Fー[:Hiragana:] [:Katakana:] [:nonspacing mark:]] ;"
":: NFKC ();"

// 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
"わ゙ <> ヷ;"
"ゐ゙ <> ヸ;"
"ゑ゙ <> ヹ;"
"を゙ <> 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};"

":: (NFKC) ;"

// note: a global filter is more efficient, but MUST include all source chars!!
":: ([\\u0000-\u007E \u3001\u3002 \u3099-\u309C \u30A1-\u30FC \uFF61-\uFF9Fー[:Hiragana:] [:Katakana:] [:nonspacing mark:]]);"

// eof
  }
}