mui-language-picker/dist/bcp47.js

Material UI language picker

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.bcp47Match = bcp47Match;
exports.bcp47Parse = bcp47Parse;
exports.bcp47Index = bcp47Index;
exports.bcp47Find = bcp47Find;
var langTags_1 = require("./langTags");
// https://tools.ietf.org/html/bcp47 page 4
var lgPat = /^([a-z]{2,3}(-[a-z]{3}){0,3})(-[A-Z][a-z]{3})?(-[A-Z]{2}|-[0-9]{3})?(-[0-9a-z]{5,8}|-[0-9][0-9a-zA-Z]{3})*(-([0-9A-WY-Za-wy-z]-[0-9A-Za-z]{2,8}|fonipa))*(-[xX]-[0-9a-zA-Z]{1,8})*$/;
function bcp47Match(code) {
    var result = lgPat.test(code);
    if (result)
        return result;
    return /en-GB-oed|i-ami|i-bnn|i-default|i-enochian|i-hak|i-klingon|i-lux|i-mingo|i-navajo|i-pwn|i-tao|i-tay|i-tsu|sgn-BE-FR|sgn-BE-NL|sgn-CH-DE/.test(code);
}
var multi = function (pat, input) {
    var result = Array();
    var index = 0;
    while (true) {
        var puItem = pat.exec(input.slice(index));
        if (!puItem)
            break;
        result.push(puItem[1]);
        index += puItem.index + puItem[1].length;
    }
    return result;
};
function bcp47Parse(code) {
    var match = lgPat.exec(code);
    // console.log(match);
    var language = match ? match[1] : null;
    var extlang = match && match[2] ? match[2].slice(1) : null;
    var script = match && match[3] ? match[3].slice(1) : null;
    var region = match && match[4] ? match[4].slice(1) : null;
    var variant = match && match[5] ? match[5].slice(1) : null;
    var extension = match && match[6] ? match[6].slice(1) : null;
    var privateUse = multi(/-[xX]-([0-9a-zA-Z]{1,8})/, code);
    var irregular = !match && bcp47Match(code) ? code : null;
    return {
        language: language,
        script: script,
        region: region,
        variant: variant,
        extension: extension,
        privateUse: privateUse,
        irregular: irregular,
        extlang: extlang,
    };
}
var tagLen = function (i) {
    var tag = langTags_1.langTags[i];
    return tag.full ? tag.full.length + tag.tag.length : tag.tag.length;
};
function bcp47Index(code) {
    var _a;
    if (!bcp47Match(code))
        return null;
    var exact = Array();
    langTags_1.langTags.forEach(function (lt, i) {
        if (lt.tag === code)
            exact.push(i);
    });
    if (exact.length === 1)
        return exact;
    var inAll = Array();
    langTags_1.langTags.forEach(function (lt, i) {
        if (lt.iso639_3 === code) {
            inAll.push(i);
        }
        else {
            if (lt.tags && lt.tags.filter(function (ltTag) { return ltTag === code; }).length > 0)
                inAll.push(i);
        }
    });
    if (inAll.length === 1)
        return inAll;
    if (inAll.length > 0)
        return inAll.sort(function (i, j) { return (langTags_1.langTags[i].name < langTags_1.langTags[j].name ? -1 : 1); });
    var part = Array();
    langTags_1.langTags.forEach(function (lt, i) {
        if (lt.full && lt.full === code.slice(0, lt.full.length)) {
            part.push(i);
        }
        else {
            if (lt.tag === code.slice(0, lt.tag.length))
                part.push(i);
        }
    });
    if (part.length === 0) {
        var parse = bcp47Parse(code);
        if (!parse.extlang)
            return part;
        var parts = (_a = parse.language) === null || _a === void 0 ? void 0 : _a.split('-');
        var isValid_1 = true;
        parts === null || parts === void 0 ? void 0 : parts.forEach(function (pt, j) {
            var codeFound = false;
            var ptLen = pt.length;
            langTags_1.langTags.forEach(function (lt, i) {
                if (j === 0 && lt.tag.slice(0, ptLen) === pt) {
                    codeFound = true;
                }
                else if (lt.tag === pt) {
                    codeFound = true;
                    if (!part.includes(i))
                        part.push(i);
                }
            });
            if (!codeFound)
                isValid_1 = false;
        });
        if (!isValid_1)
            return [];
        return part.sort(function (i, j) { return (tagLen(i) < tagLen(j) ? -1 : 1); });
    }
    var spart = part.sort(function (i, j) { return (tagLen(i) < tagLen(j) ? 1 : -1); });
    if (spart.length <= 1)
        return part;
    var long = tagLen(spart[0]);
    var longList = part
        .filter(function (ll) { return tagLen(ll) === long; })
        .sort(function (i, j) { return (langTags_1.langTags[i].name < langTags_1.langTags[j].name ? -1 : 1); });
    return longList;
}
function bcp47Find(code) {
    var _a;
    var result = (_a = bcp47Index(code)) === null || _a === void 0 ? void 0 : _a.map(function (i) { return langTags_1.langTags[i]; }).sort(function (i, j) { return (i.tag < j.tag ? -1 : 1); });
    if ((result === null || result === void 0 ? void 0 : result.length) === 0)
        return null;
    if ((result === null || result === void 0 ? void 0 : result.length) === 1)
        return result[0];
    return result;
}