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import { UnicodeRange } from "./string.ts";
import "./number.ts";
declare global {
interface String {
/**
* @summary check if string is hiragana only
*
* @argument strict don't allow ascii whitespace and punctuation (default: false)
*
* return `true` if at least one hiragana character is in string, and no other
* unicode ranges are found. ascii whitespace and punctuation is still allowed,
* but not counted as hiragana. this behavior can be turned off by setting
* `strict` to true
*/
hiraganaOnly(strict?: boolean): boolean
/**
* @summary check if string is katakana only
*
* @argument strict don't allow ascii whitespace and punctuation (default: false)
*
* return `true` if at least one katakana character is in string, and no other
* unicode ranges are found. ascii whitespace and punctuation is still allowed,
* but not counted as katakana. this behavior can be turned off by setting
* `strict` to true
*/
katakanaOnly(strict?: boolean): boolean
/**
* @summary check if string is kanji only
*
* @argument strict don't allow ascii whitespace and punctuation (default: false)
*
* return `true` if at least one kanji character is in string, and no other
* unicode ranges are found. ascii whitespace and punctuation is still allowed,
* but not counted as kanji. this behavior can be turned off by setting
* `strict` to true
*/
kanjiOnly(strict?: boolean): boolean
/**
* @summary check if string is kana only
*
* @argument strict don't allow ascii whitespace and punctuation (default: false)
*
* return `true` if at least one kana character is in string, and no other
* unicode ranges are found. ascii whitespace and punctuation is still allowed,
* but not counted as kana. this behavior can be turned off by setting `strict`
* to true
*/
kanaOnly(strict?: boolean): boolean
/**
* @summary check if string is japanese only
*
* @argument strict don't allow ascii whitespace and punctuation (default: false)
*
* return `true` if at least one japanese character is in string, and no other
* unicode ranges are found. ascii whitespace and punctuation is still allowed,
* but not counted as japanese. this behavior can be turned off by setting
* `strict` to true
*/
japaneseOnly(strict?: boolean): boolean
/** @summary convert any half-width katakana to full-width */
widenKatakana(): string;
/** @summary convert any full-width katakana to hiragana */
katakanaToHiragana(): string;
/** @summary convert any kana (full and half-width) to full-width hiragana */
normalizeKana(): string;
}
}
enum StringOnlyReturnValue {
TallyAdd,
TallyIgnore,
TallyStop,
}
/** @summary check tally for allowed scripts (internal use only) */
function stringOnly(input: string, check: (key: string, val: number) => StringOnlyReturnValue): boolean {
var tally = input.rangeTally();
var ok = false;
for (var [key, val] of Object.entries(tally)) {
switch(check(key, val)) {
case StringOnlyReturnValue.TallyAdd: {
ok = true;
break;
}
case StringOnlyReturnValue.TallyIgnore: { break; }
case StringOnlyReturnValue.TallyStop: { return false; }
}
}
return ok;
}
String.prototype.hiraganaOnly = function(strict = false) {
return stringOnly(this as string, (key, val) => {
if (key == UnicodeRange.JapaneseFWHiragana)
return StringOnlyReturnValue.TallyAdd; // count hiragana characters
else if (!strict && key.startsWith("any-"))
return StringOnlyReturnValue.TallyIgnore; // allow any- (ascii whitespace and punctuation)
else if (val > 0)
return StringOnlyReturnValue.TallyStop; // don't allow any other ranges
return StringOnlyReturnValue.TallyIgnore;
});
}
String.prototype.katakanaOnly = function(strict = false) {
return stringOnly(this as string, (key, val) => {
if ([UnicodeRange.JapaneseHWKatakana, UnicodeRange.JapaneseFWKatakana].includes(key as UnicodeRange))
return StringOnlyReturnValue.TallyAdd; // count katakana characters
else if (!strict && key.startsWith("any-"))
return StringOnlyReturnValue.TallyIgnore; // allow any- (ascii whitespace and punctuation)
else if (val > 0)
return StringOnlyReturnValue.TallyStop; // don't allow any other ranges
return StringOnlyReturnValue.TallyIgnore;
});
}
String.prototype.kanjiOnly = function(strict = false) {
return stringOnly(this as string, (key, val) => {
if (key == UnicodeRange.JapaneseKanji)
return StringOnlyReturnValue.TallyAdd; // count kanji characters
else if (!strict && key.startsWith("any-"))
return StringOnlyReturnValue.TallyIgnore; // allow any- (ascii whitespace and punctuation)
else if (val > 0)
return StringOnlyReturnValue.TallyStop; // don't allow any other ranges
return StringOnlyReturnValue.TallyIgnore;
});
}
String.prototype.kanaOnly = function(strict = false) {
return stringOnly(this as string, (key, val) => {
if ([UnicodeRange.JapaneseHWKatakana, UnicodeRange.JapaneseFWKatakana, UnicodeRange.JapaneseFWHiragana].includes(key as UnicodeRange))
return StringOnlyReturnValue.TallyAdd; // count kana characters
else if (!strict && key.startsWith("any-"))
return StringOnlyReturnValue.TallyIgnore; // allow any- (ascii whitespace and punctuation)
else if (val > 0)
return StringOnlyReturnValue.TallyStop; // don't allow any other ranges
return StringOnlyReturnValue.TallyIgnore;
});
}
String.prototype.japaneseOnly = function(strict = false) {
return stringOnly(this as string, (key, val) => {
if (key.startsWith("jp-"))
return StringOnlyReturnValue.TallyAdd; // count japanese characters
else if (!strict && key.startsWith("any-"))
return StringOnlyReturnValue.TallyIgnore; // allow any- (ascii whitespace and punctuation)
else if (val > 0)
return StringOnlyReturnValue.TallyStop; // don't allow any other ranges
return StringOnlyReturnValue.TallyIgnore;
});
}
String.prototype.widenKatakana = function() {
const map: { [key: string]: string } = {
"ｧ": "ァ",
"ｱ": "ア",
"ｨ": "ィ",
"ｲ": "イ",
"ｩ": "ゥ",
"ｳ": "ウ",
"ｪ": "ェ",
"ｴ": "エ",
"ｫ": "ォ",
"ｵ": "オ",
"ｶﾞ": "ガ",
"ｶ": "カ",
"ｷﾞ": "ギ",
"ｷ": "キ",
"ｸﾞ": "グ",
"ｸ": "ク",
"ｹﾞ": "ゲ",
"ｹ": "ケ",
"ｺﾞ": "ゴ",
"ｺ": "コ",
"ｻﾞ": "ザ",
"ｻ": "サ",
"ｼﾞ": "ジ",
"ｼ": "シ",
"ｽﾞ": "ズ",
"ｽ": "ス",
"ｾﾞ": "ゼ",
"ｾ": "セ",
"ｿﾞ": "ゾ",
"ｿ": "ソ",
"ﾀﾞ": "ダ",
"ﾀ": "タ",
"ﾁﾞ": "ヂ",
"ﾁ": "チ",
"ﾂﾞ": "ヅ",
"ｯ": "ッ",
"ﾂ": "ツ",
"ﾃﾞ": "デ",
"ﾃ": "テ",
"ﾄﾞ": "ド",
"ﾄ": "ト",
"ﾅ": "ナ",
"ﾆ": "ニ",
"ﾇ": "ヌ",
"ﾈ": "ネ",
"ﾉ": "ノ",
"ﾊﾞ": "バ",
"ﾊﾟ": "パ",
"ﾊ": "ハ",
"ﾋﾞ": "ビ",
"ﾋﾟ": "ピ",
"ﾋ": "ヒ",
"ﾌﾞ": "ブ",
"ﾌﾟ": "プ",
"ﾌ": "フ",
"ﾍﾞ": "ベ",
"ﾍﾟ": "ペ",
"ﾍ": "ヘ",
"ﾎﾞ": "ボ",
"ﾎﾟ": "ポ",
"ﾎ": "ホ",
"ﾏ": "マ",
"ﾐ": "ミ",
"ﾑ": "ム",
"ﾒ": "メ",
"ﾓ": "モ",
"ｬ": "ャ",
"ﾔ": "ヤ",
"ｭ": "ュ",
"ﾕ": "ユ",
"ｮ": "ョ",
"ﾖ": "ヨ",
"ﾗ": "ラ",
"ﾘ": "リ",
"ﾙ": "ル",
"ﾚ": "レ",
"ﾛ": "ロ",
"ﾜ": "ワ",
"ｦ": "ヲ",
"ﾝ": "ン",
"ｳﾞ": "ヴ",
"ﾜﾞ": "ヷ",
"ｲﾞ": "イ゙",
"ｴﾞ": "エ゙",
"ｦﾞ": "ヺ",
"ｰ": "ー",
};
var out = "";
outer:
for (let i = 0; i < this.length; i++) {
for (var key in map) {
if (!this.substring(i).startsWith(key)) continue;
out += map[key];
i += key.length - 1;
continue outer;
}
out += this[i];
}
return out;
}
String.prototype.katakanaToHiragana = function() {
return this.map(char => {
var code = char.codePointAt(0)!;
if (0x30a1 <= code && code <= 0x30f6) return (code + (0x3041 - 0x30a1)).toChar();
return char;
})
}
String.prototype.normalizeKana = function() {
return this.widenKatakana().katakanaToHiragana();
}
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