bot-marvin/lib/JSONX.js

Highly scalable crawler with best features.

/**
	JSON implementation which supports RegExp storage.
	@author Tilak Patidar <tilakpatidar@gmail.com>
	@constructor
	@param {Object} json_obj

*/
var JSONX = function(json_obj) {

    var obj = json_obj;
    var that = this;

    /**
    	Returns Object representation
    	@public
    	@returns {Object}
    */
    this.get = function() {
        return obj;
    };

    /**
    	Sets object
    	@public
    */
    this.set = function(ob) {
        obj = ob;
    };

    /**
    	Returns regex safe json.
    	@public
    	@returns {String}

    */
    this.toString = function() {
        return that.stringify();
    };

    /**
    	Replaces regex with __REGEXP
    	@private
    	@param {Object} key
    	@param {Object} value
    */
    var replacer = function(key, value) {
        if (value instanceof RegExp)
            return ("__REGEXP " + value.toString());
        else
            return value;
    };

    /**
    	Returns regex safe json.
    	@public
    	@returns {String}

    */
    this.stringify = function() {
        return JSON.stringify(obj, replacer, 2);
    };



};

/**
	Parses a jsonx string to Object
	@static
	@param {String} js_str
*/
JSONX.parse = function(js_str) {

    var reviver = function(key, value) {
        if (value.toString().indexOf("__REGEXP ") == 0) {
            var m = value.split("__REGEXP ")[1].match(/\/(.*)\/(.*)?/);
            return new RegExp(m[1], m[2] || "");
        } else
            return value;
    };
    return JSON.parse(js_str, reviver);
};


module.exports = JSONX;