Globalize.findClosestCulture = function()

in globalize/globalize.ts [1327:1407]

• 78 lines of code
• 21 McCabe index (conditional complexity)

Globalize.findClosestCulture = function (name) {
    var match;
    if (!name) {
        return this.cultures[this.cultureSelector] || this.cultures["default"];
    }
    if (typeof name === "string") {
        name = name.split(",");
    }
    if (isArray(name)) {
        var lang,
            cultures = this.cultures,
            list = name,
            i, l = list.length,
            prioritized = [];
        for (i = 0; i < l; i++) {
            name = trim(list[i]);
            var pri, parts = name.split(";");
            lang = trim(parts[0]);
            if (parts.length === 1) {
                pri = 1;
            }
            else {
                name = trim(parts[1]);
                if (name.indexOf("q=") === 0) {
                    name = name.substr(2);
                    pri = parseFloat(name);
                    pri = isNaN(pri) ? 0 : pri;
                }
                else {
                    pri = 1;
                }
            }
            prioritized.push({ lang: lang, pri: pri });
        }
        prioritized.sort(function (a, b) {
            return a.pri < b.pri ? 1 : -1;
        });

        // exact match
        for (i = 0; i < l; i++) {
            lang = prioritized[i].lang;
            match = cultures[lang];
            if (match) {
                return match;
            }
        }

        // neutral language match
        for (i = 0; i < l; i++) {
            lang = prioritized[i].lang;
            do {
                var index = lang.lastIndexOf("-");
                if (index === -1) {
                    break;
                }
                // strip off the last part. e.g. en-US => en
                lang = lang.substr(0, index);
                match = cultures[lang];
                if (match) {
                    return match;
                }
            }
            while (1);
        }

        // last resort: match first culture using that language
        for (i = 0; i < l; i++) {
            lang = prioritized[i].lang;
            for (var cultureKey in cultures) {
                var culture = cultures[cultureKey];
                if (culture.language == lang) {
                    return culture;
                }
            }
        }
    }
    else if (typeof name === "object") {
        return name;
    }
    return match || null;
};