io-query.js
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define(["./_base/lang"], function(lang){
// module:
// dojo/io-query
var backstop = {};
return {
// summary:
// This module defines query string processing functions.
objectToQuery: function objectToQuery(/*Object*/ map){
// summary:
// takes a name/value mapping object and returns a string representing
// a URL-encoded version of that object.
// example:
// this object:
//
// | {
// | blah: "blah",
// | multi: [
// | "thud",
// | "thonk"
// | ]
// | };
//
// yields the following query string:
//
// | "blah=blah&multi=thud&multi=thonk"
// FIXME: need to implement encodeAscii!!
var enc = encodeURIComponent, pairs = [];
for(var name in map){
var value = map[name];
if(value != backstop[name]){
var assign = enc(name) + "=";
if(lang.isArray(value)){
for(var i = 0, l = value.length; i < l; ++i){
pairs.push(assign + enc(value[i]));
}
}else{
pairs.push(assign + enc(value));
}
}
}
return pairs.join("&"); // String
},
queryToObject: function queryToObject(/*String*/ str){
// summary:
// Create an object representing a de-serialized query section of a
// URL. Query keys with multiple values are returned in an array.
//
// example:
// This string:
//
// | "foo=bar&foo=baz&thinger=%20spaces%20=blah&zonk=blarg&"
//
// results in this object structure:
//
// | {
// | foo: [ "bar", "baz" ],
// | thinger: " spaces =blah",
// | zonk: "blarg"
// | }
//
// Note that spaces and other urlencoded entities are correctly
// handled.
// FIXME: should we grab the URL string if we're not passed one?
var dec = decodeURIComponent, qp = str.split("&"), ret = {}, name, val;
for(var i = 0, l = qp.length, item; i < l; ++i){
item = qp[i];
if(item.length){
var s = item.indexOf("=");
if(s < 0){
name = dec(item);
val = "";
}else{
name = dec(item.slice(0, s));
val = dec(item.slice(s + 1));
}
if(typeof ret[name] == "string"){ // inline'd type check
ret[name] = [ret[name]];
}
if(lang.isArray(ret[name])){
ret[name].push(val);
}else{
ret[name] = val;
}
}
}
return ret; // Object
}
};
});