This module provides utilities for dealing with query strings. It provides the following methods:
-### querystring.stringify(obj, sep='&', eq='=', munge=true)
+### querystring.stringify(obj, sep='&', eq='=')
Serialize an object to a query string. Optionally override the default separator and assignment characters.
+
Example:
querystring.stringify({foo: 'bar'})
// returns
'foo:bar;baz:bob'
-By default, this function will perform PHP/Rails-style parameter munging for arrays and objects used as
-values within `obj`.
-Example:
-
- querystring.stringify({foo: ['bar', 'baz', 'boz']})
- // returns
- 'foo%5B%5D=bar&foo%5B%5D=baz&foo%5B%5D=boz'
-
- querystring.stringify({foo: {bar: 'baz'}})
- // returns
- 'foo%5Bbar%5D=baz'
-
-If you wish to disable the array munging (e.g. when generating parameters for a Java servlet), you
-can set the `munge` argument to `false`.
-Example:
-
- querystring.stringify({foo: ['bar', 'baz', 'boz']}, '&', '=', false)
- // returns
- 'foo=bar&foo=baz&foo=boz'
-
-Note that when `munge` is `false`, parameter names with object values will still be munged.
-
### querystring.parse(str, sep='&', eq='=')
Deserialize a query string to an object. Optionally override the default separator and assignment characters.
+Example:
+
querystring.parse('a=b&b=c')
// returns
{ 'a': 'b'
, 'b': 'c'
}
-This function can parse both munged and unmunged query strings (see `stringify` for details).
-
### querystring.escape
The escape function used by `querystring.stringify`, provided so that it could be overridden if necessary.
return encodeURIComponent(str);
};
+var stringifyPrimitive = function(v) {
+ switch (typeof v) {
+ case "string":
+ return v;
+
+ case "boolean":
+ return v ? "true" : "false";
+
+ case "number":
+ return isFinite(v) ? v : "";
+
+ default:
+ return "";
+ }
+};
-var stack = [];
/**
* <p>Converts an arbitrary value to a Query String representation.</p>
*
* @param obj {Variant} any arbitrary value to convert to query string
* @param sep {String} (optional) Character that should join param k=v pairs together. Default: "&"
* @param eq {String} (optional) Character that should join keys to their values. Default: "="
- * @param munge {Boolean} (optional) Indicate whether array/object params should be munged, PHP/Rails-style. Default: true
* @param name {String} (optional) Name of the current key, for handling children recursively.
* @static
*/
-QueryString.stringify = QueryString.encode = function (obj, sep, eq, munge, name) {
- munge = typeof munge == "undefined" || munge;
+QueryString.stringify = QueryString.encode = function (obj, sep, eq, name) {
sep = sep || "&";
eq = eq || "=";
- var type = Object.prototype.toString.call(obj);
- if (obj == null || type == "[object Function]" || type == "[object Number]" && !isFinite(obj)) {
- return name ? QueryString.escape(name) + eq : "";
- }
-
- switch (type) {
- case '[object Boolean]':
- obj = +obj; // fall through
- case '[object Number]':
- case '[object String]':
- return QueryString.escape(name) + eq + QueryString.escape(obj);
- case '[object Array]':
- name = name + (munge ? "[]" : "");
- return obj.map(function (item) {
- return QueryString.stringify(item, sep, eq, munge, name);
- }).join(sep);
- }
- // now we know it's an object.
-
- // Check for cyclical references in nested objects
- for (var i = stack.length - 1; i >= 0; --i) if (stack[i] === obj) {
- throw new Error("querystring.stringify. Cyclical reference");
- }
-
- stack.push(obj);
+ obj = (obj === null) ? undefined : obj;
- var begin = name ? name + "[" : "",
- end = name ? "]" : "",
- keys = Object.keys(obj),
- n,
- s = Object.keys(obj).map(function (key) {
- n = begin + key + end;
- return QueryString.stringify(obj[key], sep, eq, munge, n);
+ switch (typeof obj) {
+ case "object":
+ return Object.keys(obj).map(function(k) {
+ if (Array.isArray(obj[k])) {
+ return obj[k].map(function(v) {
+ return QueryString.escape(stringifyPrimitive(k)) +
+ eq +
+ QueryString.escape(stringifyPrimitive(v));
+ }).join(sep);
+ } else {
+ return QueryString.escape(stringifyPrimitive(k)) +
+ eq +
+ QueryString.escape(stringifyPrimitive(obj[k]));
+ }
}).join(sep);
- stack.pop();
-
- if (!s && name) {
- return name + "=";
+ default:
+ return (name) ?
+ QueryString.escape(stringifyPrimitive(name)) + eq +
+ QueryString.escape(stringifyPrimitive(obj)) :
+ "";
}
- return s;
};
-// matches .xxxxx or [xxxxx] or ['xxxxx'] or ["xxxxx"] with optional [] at the end
-var chunks = /(?:(?:^|\.)([^\[\(\.]+)(?=\[|\.|$|\()|\[([^"'][^\]]*?)\]|\["([^\]"]*?)"\]|\['([^\]']*?)'\])(\[\])?/g;
// Parse a key=val string.
QueryString.parse = QueryString.decode = function (qs, sep, eq) {
+ sep = sep || "&";
+ eq = eq || "=";
var obj = {};
- if (qs === undefined) { return {} }
- String(qs).split(sep || "&").map(function (keyValue) {
- var res = obj,
- next,
- kv = keyValue.split(eq || "="),
- key = QueryString.unescape(kv.shift(), true),
- value = QueryString.unescape(kv.join(eq || "="), true);
- key.replace(chunks, function (all, name, nameInBrackets, nameIn2Quotes, nameIn1Quotes, isArray, offset) {
- var end = offset + all.length == key.length;
- name = name || nameInBrackets || nameIn2Quotes || nameIn1Quotes;
- next = end ? value : {};
- if (Array.isArray(res[name])) {
- res[name].push(next);
- res = next;
- } else {
- if (name in res) {
- if (isArray || end) {
- res = (res[name] = [res[name], next])[1];
- } else {
- res = res[name];
- }
- } else {
- if (isArray) {
- res = (res[name] = [next])[0];
- } else {
- res = res[name] = next;
- }
- }
- }
- });
+
+ if (typeof qs !== 'string') {
+ return obj;
+ }
+
+ qs.split(sep).forEach(function(kvp) {
+ var x = kvp.split(eq);
+ var k = QueryString.unescape(x[0], true);
+ var v = QueryString.unescape(x.slice(1).join(eq), true);
+
+ if (!(k in obj)) {
+ obj[k] = v;
+ } else if (!Array.isArray(obj[k])) {
+ obj[k] = [obj[k], v];
+ } else {
+ obj[k].push(v);
+ }
});
+
return obj;
};
var qsTestCases = [
["foo=918854443121279438895193", "foo=918854443121279438895193", {"foo": "918854443121279438895193"}],
["foo=bar", "foo=bar", {"foo" : "bar"}],
- ["foo=bar&foo=quux", "foo%5B%5D=bar&foo%5B%5D=quux", {"foo" : ["bar", "quux"]}],
+ ["foo=bar&foo=quux", "foo=bar&foo=quux", {"foo" : ["bar", "quux"]}],
["foo=1&bar=2", "foo=1&bar=2", {"foo" : "1", "bar" : "2"}],
["my+weird+field=q1%212%22%27w%245%267%2Fz8%29%3F", "my%20weird%20field=q1!2%22'w%245%267%2Fz8)%3F", {"my weird field" : "q1!2\"'w$5&7/z8)?" }],
["foo%3Dbaz=bar", "foo%3Dbaz=bar", {"foo=baz" : "bar"}],
["foo=baz=bar", "foo=baz%3Dbar", {"foo" : "baz=bar"}],
- [ "str=foo&arr[]=1&arr[]=2&arr[]=3&obj[a]=bar&obj[b][]=4&obj[b][]=5&obj[b][]=6&obj[b][]=&obj[c][]=4&obj[c][]=5&obj[c][][somestr]=baz&obj[objobj][objobjstr]=blerg&somenull=&undef=", "str=foo&arr%5B%5D=1&arr%5B%5D=2&arr%5B%5D=3&obj%5Ba%5D=bar&obj%5Bb%5D%5B%5D=4&obj%5Bb%5D%5B%5D=5&obj%5Bb%5D%5B%5D=6&obj%5Bb%5D%5B%5D=&obj%5Bc%5D%5B%5D=4&obj%5Bc%5D%5B%5D=5&obj%5Bc%5D%5B%5D%5Bsomestr%5D=baz&obj%5Bobjobj%5D%5Bobjobjstr%5D=blerg&somenull=&undef=", {
+ [ "str=foo&arr=1&arr=2&arr=3&somenull=&undef=", "str=foo&arr=1&arr=2&arr=3&somenull=&undef=", {
"str":"foo",
"arr":["1","2","3"],
- "obj":{
- "a":"bar",
- "b":["4","5","6",""],
- "c":["4","5",{"somestr":"baz"}],
- "objobj":{"objobjstr":"blerg"}
- },
"somenull":"",
"undef":""
}],
- ["foo[bar][bla]=baz&foo[bar][bla]=blo", "foo%5Bbar%5D%5Bbla%5D%5B%5D=baz&foo%5Bbar%5D%5Bbla%5D%5B%5D=blo", {"foo":{"bar":{"bla":["baz","blo"]}}}],
- ["foo[bar][][bla]=baz&foo[bar][][bla]=blo", "foo%5Bbar%5D%5B%5D%5Bbla%5D=baz&foo%5Bbar%5D%5B%5D%5Bbla%5D=blo", {"foo":{"bar":[{"bla":"baz"},{"bla":"blo"}]}}],
- ["foo[bar][bla][]=baz&foo[bar][bla][]=blo", "foo%5Bbar%5D%5Bbla%5D%5B%5D=baz&foo%5Bbar%5D%5Bbla%5D%5B%5D=blo", {"foo":{"bar":{"bla":["baz","blo"]}}}],
-
- ["foo.bar.bla=baz&foo.bar.bla=blo", "foo%5Bbar%5D%5Bbla%5D%5B%5D=baz&foo%5Bbar%5D%5Bbla%5D%5B%5D=blo", {"foo":{"bar":{"bla":["baz","blo"]}}}],
- ["foo.bar[].bla=baz&foo[bar][][bla]=blo", "foo%5Bbar%5D%5B%5D%5Bbla%5D=baz&foo%5Bbar%5D%5B%5D%5Bbla%5D=blo", {"foo":{"bar":[{"bla":"baz"},{"bla":"blo"}]}}],
- ["foo[bar].bla[]=baz&foo.bar[bla][]=blo", "foo%5Bbar%5D%5Bbla%5D%5B%5D=baz&foo%5Bbar%5D%5Bbla%5D%5B%5D=blo", {"foo":{"bar":{"bla":["baz","blo"]}}}],
-
- ["foo['bar']['bla']=baz&foo[\"bar\"][\"bla\"]=blo", "foo%5Bbar%5D%5Bbla%5D%5B%5D=baz&foo%5Bbar%5D%5Bbla%5D%5B%5D=blo", {"foo":{"bar":{"bla":["baz","blo"]}}}],
- ["foo['bar'][]['bla']=baz&foo['bar'][][\"bla\"]=blo", "foo%5Bbar%5D%5B%5D%5Bbla%5D=baz&foo%5Bbar%5D%5B%5D%5Bbla%5D=blo", {"foo":{"bar":[{"bla":"baz"},{"bla":"blo"}]}}],
- ["foo[bar][\"bla\"][]=baz&foo[\"bar\"][bla][]=blo", "foo%5Bbar%5D%5Bbla%5D%5B%5D=baz&foo%5Bbar%5D%5Bbla%5D%5B%5D=blo", {"foo":{"bar":{"bla":["baz","blo"]}}}],
-
[" foo = bar ", "%20foo%20=%20bar%20", {" foo ":" bar "}],
["foo=%zx", "foo=%25zx", {"foo":"%zx"}],
["foo=%EF%BF%BD", "foo=%EF%BF%BD", {"foo" : "\ufffd" }]
// [ wonkyQS, canonicalQS, obj ]
var qsColonTestCases = [
["foo:bar", "foo:bar", {"foo":"bar"}],
- ["foo:bar;foo:quux", "foo%5B%5D:bar;foo%5B%5D:quux", {"foo" : ["bar", "quux"]}],
+ ["foo:bar;foo:quux", "foo:bar;foo:quux", {"foo" : ["bar", "quux"]}],
["foo:1&bar:2;baz:quux", "foo:1%26bar%3A2;baz:quux", {"foo":"1&bar:2", "baz":"quux"}],
["foo%3Abaz:bar", "foo%3Abaz:bar", {"foo:baz":"bar"}],
["foo:baz:bar", "foo:baz%3Abar", {"foo":"baz:bar"}]
[ {e:extendedFunction}, "e=", {"e":""} ],
[ {d:new Date()}, "d=", {"d":""} ],
[ {d:Date}, "d=", {"d":""} ],
- [ {f:new Boolean(false), t:new Boolean(true)}, "f=0&t=1", {"f":"0", "t":"1"} ],
- [ {f:false, t:true}, "f=0&t=1", {"f":"0", "t":"1"} ],
+ [ {f:new Boolean(false), t:new Boolean(true)}, "f=&t=", {"f":"", "t":""} ],
+ [ {f:false, t:true}, "f=false&t=true", {"f":"false", "t":"true"} ],
[ {n:null}, "n=", {"n":""} ],
[ {nan:NaN}, "nan=", {"nan":""} ],
[ {inf:Infinity}, "inf=", {"inf":""} ]
["gragh=1&gragh=3&goo=2", {"gragh": ["1", "3"], "goo": "2"}],
["frappucino=muffin&goat%5B%5D=scone&pond=moose",
{"frappucino": "muffin", "goat[]": "scone", "pond": "moose"}],
- ["obj%5Btrololol%5D=yes&obj%5Blololo%5D=no", {"obj": {"trololol": "yes", "lololo": "no"}}]
+ ["trololol=yes&lololo=no", {"trololol": "yes", "lololo": "no"}]
];
assert.strictEqual("918854443121279438895193", qs.parse("id=918854443121279438895193").id);
})();
// now test stringifying
-assert.throws(function () {
- var f = {};
- f.f = f;
- qs.stringify(f);
-});
// basic
qsTestCases.forEach(function (testCase) {
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