/*! * querystring * Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca> * MIT Licensed */ /** * Library version. */ exports.version = '0.4.2'; /** * Object#toString() ref for stringify(). */ var toString = Object.prototype.toString; /** * Cache non-integer test regexp. */ var isint = /^[0-9]+$/; function promote(parent, key) { if (parent[key].length == 0) return parent[key] = {}; var t = {}; for (var i in parent[key]) t[i] = parent[key][i]; parent[key] = t; return t;} function parse(parts, parent, key, val) { var part = parts.shift(); // end if (!part) { if (Array.isArray(parent[key])) { parent[key].push(val); } else if ('object' == typeof parent[key]) { parent[key] = val; } else if ('undefined' == typeof parent[key]) { parent[key] = val; } else { parent[key] = [parent[key], val]; } // array } else { var obj = parent[key] = parent[key] || []; if (']' == part) { if (Array.isArray(obj)) { if ('' != val) obj.push(val); } else if ('object' == typeof obj) { obj[Object.keys(obj).length] = val; } else { obj = parent[key] = [parent[key], val]; } // prop } else if (~part.indexOf(']')) { part = part.substr(0, part.length - 1); if (!isint.test(part) && Array.isArray(obj)) obj = promote(parent, key); parse(parts, obj, part, val); // key } else { if (!isint.test(part) && Array.isArray(obj)) obj = promote(parent, key); parse(parts, obj, part, val); } }} /** * Merge parent key/val pair. */ function merge(parent, key, val){ if (~key.indexOf(']')) { var parts = key.split('[') , len = parts.length , last = len - 1; parse(parts, parent, 'base', val); // optimize } else { if (!isint.test(key) && Array.isArray(parent.base)) { var t = {}; for (var k in parent.base) t[k] = parent.base[k]; parent.base = t; } set(parent.base, key, val); } return parent;} /** * Parse the given obj. */ function parseObject(obj){ var ret = { base: {} }; Object.keys(obj).forEach(function(name){ merge(ret, name, obj[name]); }); return ret.base;} /** * Parse the given str. */ function parseString(str){ return String(str) .split('&') .reduce(function(ret, pair){ try{ pair = decodeURIComponent(pair.replace(/\+/g, ' ')); } catch(e) { // ignore } var eql = pair.indexOf('=') , brace = lastBraceInKey(pair) , key = pair.substr(0, brace || eql) , val = pair.substr(brace || eql, pair.length) , val = val.substr(val.indexOf('=') + 1, val.length); // ?foo if ('' == key) key = pair, val = ''; return merge(ret, key, val); }, { base: {} }).base;} /** * Parse the given query `str` or `obj`, returning an object. * * @param {String} str | {Object} obj * @return {Object} * @api public */ exports.parse = function(str){ if (null == str || '' == str) return {}; return 'object' == typeof str ? parseObject(str) : parseString(str);}; /** * Turn the given `obj` into a query string * * @param {Object} obj * @return {String} * @api public */ var stringify = exports.stringify = function(obj, prefix) { if (Array.isArray(obj)) { return stringifyArray(obj, prefix); } else if ('[object Object]' == toString.call(obj)) { return stringifyObject(obj, prefix); } else if ('string' == typeof obj) { return stringifyString(obj, prefix); } else { return prefix + '=' + obj; }}; /** * Stringify the given `str`. * * @param {String} str * @param {String} prefix * @return {String} * @api private */ function stringifyString(str, prefix) { if (!prefix) throw new TypeError('stringify expects an object'); return prefix + '=' + encodeURIComponent(str);} /** * Stringify the given `arr`. * * @param {Array} arr * @param {String} prefix * @return {String} * @api private */ function stringifyArray(arr, prefix) { var ret = []; if (!prefix) throw new TypeError('stringify expects an object'); for (var i = 0; i < arr.length; i++) { ret.push(stringify(arr[i], prefix + '[]')); } return ret.join('&');} /** * Stringify the given `obj`. * * @param {Object} obj * @param {String} prefix * @return {String} * @api private */ function stringifyObject(obj, prefix) { var ret = [] , keys = Object.keys(obj) , key; for (var i = 0, len = keys.length; i < len; ++i) { key = keys[i]; ret.push(stringify(obj[key], prefix ? prefix + '[' + encodeURIComponent(key) + ']' : encodeURIComponent(key))); } return ret.join('&');} /** * Set `obj`'s `key` to `val` respecting * the weird and wonderful syntax of a qs, * where "foo=bar&foo=baz" becomes an array. * * @param {Object} obj * @param {String} key * @param {String} val * @api private */ function set(obj, key, val) { var v = obj[key]; if (undefined === v) { obj[key] = val; } else if (Array.isArray(v)) { v.push(val); } else { obj[key] = [v, val]; }} /** * Locate last brace in `str` within the key. * * @param {String} str * @return {Number} * @api private */ function lastBraceInKey(str) { var len = str.length , brace , c; for (var i = 0; i < len; ++i) { c = str[i]; if (']' == c) brace = false; if ('[' == c) brace = true; if ('=' == c && !brace) return i; }}
/*!
* querystring
* Copyright(c) 2010 TJ Holowaychuk <tj@vision-media.ca>
* MIT Licensed
*/
/**
* Library version.
*/
exports.version = '0.4.2';
/**
* Object#toString() ref for stringify().
*/
var toString = Object.prototype.toString;
/**
* Cache non-integer test regexp.
*/
var isint = /^[0-9]+$/;
function promote(parent, key) {
if (parent[key].length == 0) return parent[key] = {};
var t = {};
for (var i in parent[key]) t[i] = parent[key][i];
parent[key] = t;
return t;
}
function parse(parts, parent, key, val) {
var part = parts.shift();
// end
if (!part) {
if (Array.isArray(parent[key])) {
parent[key].push(val);
} else if ('object' == typeof parent[key]) {
parent[key] = val;
} else if ('undefined' == typeof parent[key]) {
parent[key] = val;
} else {
parent[key] = [parent[key], val];
}
// array
} else {
var obj = parent[key] = parent[key] || [];
if (']' == part) {
if (Array.isArray(obj)) {
if ('' != val) obj.push(val);
} else if ('object' == typeof obj) {
obj[Object.keys(obj).length] = val;
} else {
obj = parent[key] = [parent[key], val];
}
// prop
} else if (~part.indexOf(']')) {
part = part.substr(0, part.length - 1);
if (!isint.test(part) && Array.isArray(obj)) obj = promote(parent, key);
parse(parts, obj, part, val);
// key
} else {
if (!isint.test(part) && Array.isArray(obj)) obj = promote(parent, key);
parse(parts, obj, part, val);
}
}
}
/**
* Merge parent key/val pair.
*/
function merge(parent, key, val){
if (~key.indexOf(']')) {
var parts = key.split('[')
, len = parts.length
, last = len - 1;
parse(parts, parent, 'base', val);
// optimize
} else {
if (!isint.test(key) && Array.isArray(parent.base)) {
var t = {};
for (var k in parent.base) t[k] = parent.base[k];
parent.base = t;
}
set(parent.base, key, val);
}
return parent;
}
/**
* Parse the given obj.
*/
function parseObject(obj){
var ret = { base: {} };
Object.keys(obj).forEach(function(name){
merge(ret, name, obj[name]);
});
return ret.base;
}
/**
* Parse the given str.
*/
function parseString(str){
return String(str)
.split('&')
.reduce(function(ret, pair){
try{
pair = decodeURIComponent(pair.replace(/\+/g, ' '));
} catch(e) {
// ignore
}
var eql = pair.indexOf('=')
, brace = lastBraceInKey(pair)
, key = pair.substr(0, brace || eql)
, val = pair.substr(brace || eql, pair.length)
, val = val.substr(val.indexOf('=') + 1, val.length);
// ?foo
if ('' == key) key = pair, val = '';
return merge(ret, key, val);
}, { base: {} }).base;
}
/**
* Parse the given query `str` or `obj`, returning an object.
*
* @param {String} str | {Object} obj
* @return {Object}
* @api public
*/
exports.parse = function(str){
if (null == str || '' == str) return {};
return 'object' == typeof str
? parseObject(str)
: parseString(str);
};
/**
* Turn the given `obj` into a query string
*
* @param {Object} obj
* @return {String}
* @api public
*/
var stringify = exports.stringify = function(obj, prefix) {
if (Array.isArray(obj)) {
return stringifyArray(obj, prefix);
} else if ('[object Object]' == toString.call(obj)) {
return stringifyObject(obj, prefix);
} else if ('string' == typeof obj) {
return stringifyString(obj, prefix);
} else {
return prefix + '=' + obj;
}
};
/**
* Stringify the given `str`.
*
* @param {String} str
* @param {String} prefix
* @return {String}
* @api private
*/
function stringifyString(str, prefix) {
if (!prefix) throw new TypeError('stringify expects an object');
return prefix + '=' + encodeURIComponent(str);
}
/**
* Stringify the given `arr`.
*
* @param {Array} arr
* @param {String} prefix
* @return {String}
* @api private
*/
function stringifyArray(arr, prefix) {
var ret = [];
if (!prefix) throw new TypeError('stringify expects an object');
for (var i = 0; i < arr.length; i++) {
ret.push(stringify(arr[i], prefix + '[]'));
}
return ret.join('&');
}
/**
* Stringify the given `obj`.
*
* @param {Object} obj
* @param {String} prefix
* @return {String}
* @api private
*/
function stringifyObject(obj, prefix) {
var ret = []
, keys = Object.keys(obj)
, key;
for (var i = 0, len = keys.length; i < len; ++i) {
key = keys[i];
ret.push(stringify(obj[key], prefix
? prefix + '[' + encodeURIComponent(key) + ']'
: encodeURIComponent(key)));
}
return ret.join('&');
}
/**
* Set `obj`'s `key` to `val` respecting
* the weird and wonderful syntax of a qs,
* where "foo=bar&foo=baz" becomes an array.
*
* @param {Object} obj
* @param {String} key
* @param {String} val
* @api private
*/
function set(obj, key, val) {
var v = obj[key];
if (undefined === v) {
obj[key] = val;
} else if (Array.isArray(v)) {
v.push(val);
} else {
obj[key] = [v, val];
}
}
/**
* Locate last brace in `str` within the key.
*
* @param {String} str
* @return {Number}
* @api private
*/
function lastBraceInKey(str) {
var len = str.length
, brace
, c;
for (var i = 0; i < len; ++i) {
c = str[i];
if (']' == c) brace = false;
if ('[' == c) brace = true;
if ('=' == c && !brace) return i;
}
}