stringHumanizerExtensions.js

var Humanizer;
(function (Humanizer) {
    "use strict";
    function fromUnderscoreDashSeparatedWords(input) {
        return input.split(/[_-]/g, Number.MAX_VALUE).join(" ");
    }
    function fromPascalCase(input) {
        var pascalCaseRegex = /(?:([A-Z][a-z]+)(?=[A-Z]))|(?:([a-z]+)(?=[A-Z]))|(?:(\d+))|(?:([A-Z][a-z]+))|([A-Z]+)/g;
        var matches = input.match(pascalCaseRegex) || [];
        var matchesLength = matches.length;
        for (var i = 0; i < matchesLength; i++) {
            var word = matches[i] || "";
            matches[i] = (word.toUpperCase() === word) && (word.length > 1) ? word : word.toLowerCase();
        }
        var result = matches.join(" ");
        result = result.charAt(0).toUpperCase() + result.substr(1);
        return result.replace(" i ", " I ");
    }
    function humanize(input) {
        if (input === input.toUpperCase()) {
            return input;
        }
        if ((input.indexOf("_") !== -1) || (input.indexOf("-") !== -1)) {
            return fromUnderscoreDashSeparatedWords(input);
        }
        return fromPascalCase(input);
    }
    /**
     * Humanizes the input string
     * @param {Humanizer.LetterCasing} [casing] The desired casing for the output
     */
    String.prototype.humanize = function (casing) {
        /// <signature>
        ///     <summary>
        ///         Humanizes the input string; e.g. Underscored_input_String_is_turned_INTO_sentence -> 'Underscored input String is turned INTO sentence'
        ///     </summary>
        /// </signature>
        /// <signature>
        ///     <summary>
        ///         Humanized the input string based on the provided casing
        ///     </summary>
        ///     <param name="casing" type="Humanizer.LetterCasing">
        ///         The desired casing for the output
        ///     </param>
        /// </signature>
        if ((casing !== null) && (casing !== undefined)) {
            return humanize(this).applyCasing(casing);
        }
        else {
            return humanize(this);
        }
    };
})(Humanizer || (Humanizer = {}));
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