ltgcgo/mint

"use strict";

// This implementation will actually ignore the Q value of each language.

let langMatch = function (target, mask) {
    let result,
    candidates = target.split(",");
    // Rid the Q value.
    candidates.forEach(function (e, i, a) {
        let semiColon = e.indexOf(";");
        if (semiColon > -1) {
            a[i] = e.slice(0, semiColon);
        };
    });
    if (mask.length > candidates.length) {
        let resultIdx = 127;
        candidates.forEach(function (e, i) {
            let langIdx = mask.indexOf(e);
            if (langIdx > -1 && langIdx < resultIdx) {
                result = e;
                resultIdx = langIdx;
            };
        });
        if (!result && mask.includes("*")) {
            result = candidates[0];
        };
    } else {
        mask.forEach(function (e, i) {
            if (e != "*") {
                let langIdx = target.indexOf(e);
                if (!result && langIdx > -1) {
                    result = e;
                };
            } else {
                if (!result) {
                    result = candidates[0];
                };
            };
        });
    };
    return result || "en";
};

export {
    langMatch
};