95 lines
2.3 KiB
JavaScript
95 lines
2.3 KiB
JavaScript
const numberingSystems = {
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arab: "[\u0660-\u0669]",
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arabext: "[\u06F0-\u06F9]",
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bali: "[\u1B50-\u1B59]",
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beng: "[\u09E6-\u09EF]",
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deva: "[\u0966-\u096F]",
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fullwide: "[\uFF10-\uFF19]",
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gujr: "[\u0AE6-\u0AEF]",
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hanidec: "[〇|一|二|三|四|五|六|七|八|九]",
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khmr: "[\u17E0-\u17E9]",
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knda: "[\u0CE6-\u0CEF]",
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laoo: "[\u0ED0-\u0ED9]",
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limb: "[\u1946-\u194F]",
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mlym: "[\u0D66-\u0D6F]",
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mong: "[\u1810-\u1819]",
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mymr: "[\u1040-\u1049]",
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orya: "[\u0B66-\u0B6F]",
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tamldec: "[\u0BE6-\u0BEF]",
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telu: "[\u0C66-\u0C6F]",
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thai: "[\u0E50-\u0E59]",
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tibt: "[\u0F20-\u0F29]",
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latn: "\\d",
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};
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const numberingSystemsUTF16 = {
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arab: [1632, 1641],
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arabext: [1776, 1785],
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bali: [6992, 7001],
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beng: [2534, 2543],
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deva: [2406, 2415],
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fullwide: [65296, 65303],
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gujr: [2790, 2799],
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khmr: [6112, 6121],
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knda: [3302, 3311],
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laoo: [3792, 3801],
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limb: [6470, 6479],
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mlym: [3430, 3439],
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mong: [6160, 6169],
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mymr: [4160, 4169],
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orya: [2918, 2927],
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tamldec: [3046, 3055],
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telu: [3174, 3183],
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thai: [3664, 3673],
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tibt: [3872, 3881],
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};
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const hanidecChars = numberingSystems.hanidec.replace(/[\[|\]]/g, "").split("");
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export function parseDigits(str) {
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let value = parseInt(str, 10);
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if (isNaN(value)) {
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value = "";
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for (let i = 0; i < str.length; i++) {
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const code = str.charCodeAt(i);
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if (str[i].search(numberingSystems.hanidec) !== -1) {
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value += hanidecChars.indexOf(str[i]);
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} else {
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for (const key in numberingSystemsUTF16) {
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const [min, max] = numberingSystemsUTF16[key];
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if (code >= min && code <= max) {
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value += code - min;
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}
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}
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}
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}
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return parseInt(value, 10);
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} else {
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return value;
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}
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}
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// cache of {numberingSystem: {append: regex}}
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const digitRegexCache = new Map();
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export function resetDigitRegexCache() {
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digitRegexCache.clear();
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}
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export function digitRegex({ numberingSystem }, append = "") {
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const ns = numberingSystem || "latn";
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let appendCache = digitRegexCache.get(ns);
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if (appendCache === undefined) {
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appendCache = new Map();
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digitRegexCache.set(ns, appendCache);
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}
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let regex = appendCache.get(append);
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if (regex === undefined) {
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regex = new RegExp(`${numberingSystems[ns]}${append}`);
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appendCache.set(append, regex);
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}
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return regex;
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}
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