json.js

(function ($) {

  $.toJSON = function (o, replacer, space, recurse) {
    if (typeof(JSON) == 'object' && JSON.stringify) return JSON.stringify(o, replacer, space);

    if (!recurse && $.isFunction(replacer)) o = replacer("", o);

    if (typeof space == "number") space = "          ".substring(0, space);
    space = (typeof space == "string") ? space.substring(0, 10) : "";

    var type = typeof(o);

    if (o === null) return "null";

    if (type == "undefined" || type == "function") return undefined;

    if (type == "number" || type == "boolean") return o + "";

    if (type == "string") return $.quoteString(o);

    if (type == 'object') {
      if (typeof o.toJSON == "function") return $.toJSON(o.toJSON(), replacer, space, true);

      if (o.constructor === Date) {
        var month = o.getUTCMonth() + 1;
        if (month < 10) month = '0' + month;

        var day = o.getUTCDate();
        if (day < 10) day = '0' + day;

        var year = o.getUTCFullYear();

        var hours = o.getUTCHours();
        if (hours < 10) hours = '0' + hours;

        var minutes = o.getUTCMinutes();
        if (minutes < 10) minutes = '0' + minutes;

        var seconds = o.getUTCSeconds();
        if (seconds < 10) seconds = '0' + seconds;

        var milli = o.getUTCMilliseconds();
        if (milli < 100) milli = '0' + milli;
        if (milli < 10) milli = '0' + milli;

        return '"' + year + '-' + month + '-' + day + 'T' + hours + ':' + minutes + ':' + seconds + '.' + milli + 'Z"';
      }

      var process = ($.isFunction(replacer)) ?
      function (k, v) {
        return replacer(k, v);
      } : function (k, v) {
        return v;
      },
        nl = (space) ? "\n" : "",
        sp = (space) ? " " : "";

      if (o.constructor === Array) {
        var ret = [];
        for (var i = 0; i < o.length; i++)
        ret.push(($.toJSON(process(i, o[i]), replacer, space, true) || "null").replace(/^/gm, space));

        return "[" + nl + ret.join("," + nl) + nl + "]";
      }

      var pairs = [],
        proplist;
      if ($.isArray(replacer)) {
        proplist = $.map(replacer, function (v) {
          return (typeof v == "string" || typeof v == "number") ? v + "" : null;
        });
      }
      for (var k in o) {
        var name, val, type = typeof k;

        if (proplist && $.inArray(k + "", proplist) == -1) continue;

        if (type == "number") name = '"' + k + '"';
        else if (type == "string") name = $.quoteString(k);
        else continue; //skip non-string or number keys
        val = $.toJSON(process(k, o[k]), replacer, space, true);

        if (typeof val == "undefined") continue; //skip pairs where the value is a function.
        pairs.push((name + ":" + sp + val).replace(/^/gm, space));
      }

      return "{" + nl + pairs.join("," + nl) + nl + "}";
    }
  };


  $.evalJSON = function (src) {
    if (typeof(JSON) == 'object' && JSON.parse) return JSON.parse(src);
    return eval("(" + src + ")");
  };


  $.secureEvalJSON = function (src) {
    if (typeof(JSON) == 'object' && JSON.parse) return JSON.parse(src);

    var filtered = src;
    filtered = filtered.replace(/\\["\\\/bfnrtu]/g, '@');
    filtered = filtered.replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']');
    filtered = filtered.replace(/(?:^|:|,)(?:\s*\[)+/g, '');

    if (/^[\],:{}\s]*$/.test(filtered)) return eval("(" + src + ")");
    else throw new SyntaxError("Error parsing JSON, source is not valid.");
  };


  $.quoteString = function (string) {
    if (string.match(_escapeable)) {
      return '"' + string.replace(_escapeable, function (a) {
        var c = _meta[a];
        if (typeof c === 'string') return c;
        c = a.charCodeAt();
        return '\\u00' + Math.floor(c / 16).toString(16) + (c % 16).toString(16);
      }) + '"';
    }
    return '"' + string + '"';
  };

  var _escapeable = /["\\\x00-\x1f\x7f-\x9f]/g;

  var _meta = {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '"': '\\"',
    '\\': '\\\\'
  };

  return $;
})(jQuery);