Return a new JSON object of the old string. - Node.js Object

Node.js examples for Object:Json

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Description

Return a new JSON object of the old string.

Demo Code

/**/*from ww w  . j a v  a  2s. c om*/
 * Return a new JSON object of the old string.
 * Turns:
 *     file.js?a=1&b.c=3.0&b.d=four&a_false_value=false&a_null_value=null
 * Into:
 *     {"a":1,"b":{"c":3,"d":"four"},"a_false_value":false,"a_null_value":null}
 * @version 1.1.0
 * @date July 16, 2010
 * @since 1.0.0, June 30, 2010
 * @package jquery-sparkle {@link http://www.balupton/projects/jquery-sparkle}
 * @author Benjamin "balupton" Lupton {@link http://www.balupton.com}
 * @copyright (c) 2009-2010 Benjamin Arthur Lupton {@link http://www.balupton.com}
 * @license GNU Affero General Public License version 3 {@link http://www.gnu.org/licenses/agpl-3.0.html}
 */
String.prototype.queryStringToJSON = String.prototype.queryStringToJSON || function ( )
{  // Turns a params string or url into an array of params
  // Prepare
  var params = String(this);
  // Remove url if need be
  params = params.substring(params.indexOf('?')+1);
  // params = params.substring(params.indexOf('#')+1);
  // Change + to %20, the %20 is fixed up later with the decode
  params = params.replace(/\+/g, '%20');
  // Do we have JSON string
  if ( params.substring(0,1) === '{' && params.substring(params.length-1) === '}' )
  {  // We have a JSON string
    return eval(decodeURIComponent(params));
  }
  // We have a params string
  params = params.split(/\&(amp\;)?/);
  var json = {};
  // We have params
  for ( var i = 0, n = params.length; i < n; ++i )
  {
    // Adjust
    var param = params[i] || null;
    if ( param === null ) { continue; }
    param = param.split('=');
    if ( param === null ) { continue; }
    // ^ We now have "var=blah" into ["var","blah"]

    // Get
    var key = param[0] || null;
    if ( key === null ) { continue; }
    if ( typeof param[1] === 'undefined' ) { continue; }
    var value = param[1];
    // ^ We now have the parts

    // Fix
    key = decodeURIComponent(key);
    value = decodeURIComponent(value);
    try {
        // value can be converted
        value = eval(value);
    } catch ( e ) {
        // value is a normal string
    }

    // Set
    // window.console.log({'key':key,'value':value}, split);
    var keys = key.split('.');
    if ( keys.length === 1 )
    {  // Simple
      json[key] = value;
    }
    else
    {  // Advanced (Recreating an object)
      var path = '',
        cmd = '';
      // Ensure Path Exists
      $.each(keys,function(ii,key){
        path += '["'+key.replace(/"/g,'\\"')+'"]';
        jsonCLOSUREGLOBAL = json; // we have made this a global as closure compiler struggles with evals
        cmd = 'if ( typeof jsonCLOSUREGLOBAL'+path+' === "undefined" ) jsonCLOSUREGLOBAL'+path+' = {}';
        eval(cmd);
        json = jsonCLOSUREGLOBAL;
        delete jsonCLOSUREGLOBAL;
      });
      // Apply Value
      jsonCLOSUREGLOBAL = json; // we have made this a global as closure compiler struggles with evals
      valueCLOSUREGLOBAL = value; // we have made this a global as closure compiler struggles with evals
      cmd = 'jsonCLOSUREGLOBAL'+path+' = valueCLOSUREGLOBAL';
      eval(cmd);
      json = jsonCLOSUREGLOBAL;
      delete jsonCLOSUREGLOBAL;
      delete valueCLOSUREGLOBAL;
    }
    // ^ We now have the parts added to your JSON object
  }
  return json;
};

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