in progress GET object parser

parseGetArgs.js

// SCRIPT IN PROGRESS! BEWARE SUPER HACKY/UGLY CODE BELOW

// takes an associative array of args "a[b][c]" = d into a : { b : { c : d } }                                    

// use: var getArgs = parseGetArgs(url.parse(request.url, true).query); 

function parseGetArgs(args) {                                                             
    if (!args) return null;                                                               
                                                                                          
    var result = {};                                                                      
                                                                                          
    for (var arg in args) {                                                               
        var parts = arg.split(/[\[\]]/);                                                  
                                                                                          
        for (var i = 0, part, last = result, ii = parts.length; i < ii; i++) {            
            part = parts[i];                                                              
                                                                                          
            if (!part.length) continue;                                                   
                                                                                          
            if (i == ii - 2) {                                                            
                last[part] = args[arg];                                                   
                continue;                                                                 
            }                                                                             
                                                                                          
            if (!last[part]) // this is a new key                                         
                last[part] = (i == ii - 1) ? args[arg] : {};                              
                                                                                          
            last = last[part];                                                            
        }                                                                                 
    }                                                                                     
                                                                                          
    return result;                                                                        
}