jaxon-php / jaxon-mono

jaxon-js/src/utils/string.js

/**
 * Class: jaxon.utils.string
 *
 * global: jaxon
 */

(function(self) {
    /**
     * Replace all occurances of the single quote character with a double quote character.
     *
     * @param {string=} haystack The source string to be scanned
     *
     * @returns {string|false} A new string with the modifications applied. False on error.
     */
    self.doubleQuotes = haystack => haystack === undefined ?
        false : haystack.replace(new RegExp("'", 'g'), '"');

    /**
     * Replace all occurances of the double quote character with a single quote character.
     *
     * @param {string=} haystack The source string to be scanned
     *
     * @returns {string|false} A new string with the modification applied
     */
    self.singleQuotes = haystack => haystack === undefined ?
        false : haystack.replace(new RegExp('"', 'g'), "'");

    /**
     * Detect, and if found, remove the prefix 'on' from the specified string.
     * This is used while working with event handlers.
     *
     * @param {string} sEventName The string to be modified
     *
     * @returns {string} The modified string
     */
    self.stripOnPrefix = (sEventName) => {
        sEventName = sEventName.toLowerCase();
        return sEventName.indexOf('on') === 0 ? sEventName.replace(/on/, '') : sEventName;
    };

    /**
     * Detect, and add if not found, the prefix 'on' from the specified string.
     * This is used while working with event handlers.
     *
     * @param {string} sEventName The string to be modified
     *
     * @returns {string} The modified string
     */
    self.addOnPrefix = (sEventName) => {
        sEventName = sEventName.toLowerCase();
        return sEventName.indexOf('on') !== 0 ? 'on' + sEventName : sEventName;
    };

    /**
     * String functions for Jaxon
     * See http://javascript.crockford.com/remedial.html for more explanation
     */
    if (!String.prototype.supplant) {
        /**
         * Substitute variables in the string
         *
         * @param {object} values The substitution values
         *
         * @returns {string}
         */
        String.prototype.supplant = function(values) {

You are extending the built-in type String. This may have unintended consequences on other objects using this built-in type. Consider subclassing instead.

            return this.replace(
                /\{([^{}]*)\}/g,
                (a, b) => {
                    const r = values[b];
                    const t = typeof r;
                    return t === 'string' || t === 'number' ? r : a;
                }
            );
        };
    }
})(jaxon.utils.string);